JP3369943B2 - Remote tester for fire alarm system - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a remote fire alarm system for remotely testing a plurality of sensors connected in parallel between a pair of lines drawn from a repeater by connecting a cable to the repeater. Regarding the tester.

[0002]

2. Description of the Related Art Conventionally, in a fire alarm system installed in an apartment house, a fire detector is installed in each dwelling unit, and it is installed in a fire receiver and a control room in the dwelling unit by detecting a fire by the fire detector. A fire detection signal is sent to the receiver of the residential building to warn of an abnormality. In order to test the fire detectors in each dwelling unit, normally, a person enters each dwelling unit and operates them one by one using a fire detector test device such as a smoke tester or a heating tester. I'm confirming.

However, in such a test method, the test must be performed in each dwelling unit, and there are cases in which the dweller is out of the house or cannot enter the dwelling unit due to privacy issues. Therefore, in recent years, it has been considered to remotely test the fire detector from outside the dwelling unit without entering the dwelling unit. As such a system, Japanese Patent Laid-Open No. 8-30
No. 5977.

In this system, in addition to a two-wire type detector line in which fire detectors are connected in parallel from a repeater or a receiver, a test signal line for sequentially performing a test operation of the fire detectors is provided. And therefore requires a 3-wire sensor line. When conducting a test, connect a portable inspection device to the repeater or receiver and switch the pair of detector lines connected to the fire detector to the inspection device side. In this state, the test power is supplied from the inspection device to the test signal line, and the test power is applied to the fire detector connected first to activate the alarm.

If the fire detector is normal, an alarm is issued and the test power is supplied to the next fire detector via the test signal line. In this way, fire detectors are issued one test after another, and if all the fire detectors are normal, all the fire detectors operate normally due to the current flowing through the terminating resistor connected to the end of the test signal line. It is judged that the test result is normal, and the receiver is alarmed to inform that the test result is normal.

[0006]

However, such a conventional remote testable fire alarm system is a three-wire system in which a test signal line is added to a two-wire type sensor line, and accordingly, remote control is possible. The tester also had to be connected to the fire detector side with three wires, which made the wiring more complicated and costly than the conventional two-wire fire alarm system.

Therefore, there is a demand for a remote tester capable of sequentially testing fire detectors with the two-wire type fire alarm system. However, for a remote test compatible with this 2-wire fire alarm system, a unique address such as a detector number is set in the fire detector, and the detector operation is performed by sequentially specifying the detector address from the remote tester. It needs to be done. Therefore, the fire detector used in the fire alarm system requires a data registration operation for writing a unique address such as a detector number in advance. Therefore, it is conceivable that the remote tester has a function of writing data in the memory of the fire detector. However, if the remote tester is provided with a data writing function, it is possible to rewrite the data of the fire detector even during the remote test. Therefore, if the data of the fire detector is rewritten without being aware of it due to an operation error during the remote test, the test result will be abnormal, but it may take time and time to deal with the abnormality because the cause is unknown. was there.

The present invention has been made in view of the above conventional problems, and enables remote testing with a two-wire system, and at the same time ensures data rewriting during testing even if a data writing function is provided. It is an object of the present invention to provide a remote tester for a fire alarm system that is designed to prevent it.

[0009]

First, a fire alarm system in which a remote tester of the present invention is used stores at least unique sensor number data at a predetermined address of a non-volatile memory, and the sensor number data can be designated. Based on one or more fire detectors equipped with a remote test function that operates based on the test, a two-wire type detector line that connects multiple fire detectors, and a detector line that is normally connected to a residential unit receiver, A repeater having a switching circuit for switching the detector line from the residential unit receiver side to the remote tester side during the test of the fire detector.

The remote tester of the present invention intended for such a two-wire type fire alarm system has a repeater connecting connector for connecting the repeater with a cable by a cable at the time of a test, and a pair of repeater connecting connectors. It is connected in parallel to the connector terminals for connecting the sensor line, and a pair of sensor connection terminal parts and a sensor connection terminal part are connected to the device body to electrically connect the fire detector by itself when writing data. In the state where the writing control unit that writes data such as the detector number in the state where the fire detector is fitted and connected by itself and the cable connection to the repeater connector connector is detected and the writing operation by the writing control unit is prohibited A test control unit for performing a remote test of the fire detector is provided.

As described above, since the writing control section prohibits the writing operation to the fire detector provided in the fire alarm system by detecting the cable connection to the repeater connecting connector, the remote tester is connected to the fire detector. Even if the data writing function is provided, it is possible to surely prevent the malfunction of rewriting the data of the fire detector during the remote test, and it is possible to properly use the remote test function and the data writing function properly.

Further, the remote tester of the present invention is provided with a pair of sensor connection terminals on both sides of the upper surface of the tester body, and a relay connector is provided between them to detect a fire in the pair of sensor connection terminals. Only the fitting connection of the equipment or the cable connection to the repeater connection connector is possible. For this reason, when connecting the cable to the repeater connection connector, prevent the fire detector from connecting to the detector connection terminal part, and conversely when connecting the fire detector to the detector connection terminal part, connect the cable to the repeater connection connector part. The remote test and the data registration functions are clearly separated so that they can be used properly and the operability is improved.

The sensor connection terminal portion provided on the tester main body is
Place the fitting and the fitting spring in a crimped state toward the front opening, and place the fitting of the non-waterproof sensor or the lead wire terminal of the waterproof sensor between the fitting and the fitting spring. The structure is such that it is inserted from the opening and sandwiched and connected. Further, the remote tester of the present invention has a mode setting section, and the mode setting section detects the presence or absence of cable connection to the repeater connection connector, and when the cable connection is detected, the test control section is operated to notify the fire. Set the test mode to test the fire detector of the system, and if the cable connection is not detected, operate the data write control unit to fit the detector connection terminal and connect the fire detector alone. Set the data registration mode for writing data.

In this case, a mode indicator lamp for confirming the mode set by the mode setting section is provided to always clearly indicate the operation mode. The write control unit that operates by setting the data registration mode by the mode setting unit further includes
In addition to the data writing operation of the fire detector, the write data can be confirmed and the fire detector alone can be tested. In the remote tester of the present invention, the mode setting unit sets the first voltage application mode in which a voltage is applied to the sensor line side when a switch operation for starting a test or starting data registration is detected after the power switch is turned on. On the other hand, when the simultaneous operation of the power switch and other predetermined switch is detected,
A second voltage application mode is set in which a voltage is applied to the sensor line side when the power is turned on.

For example, in a fire detector having a large-capacity capacitor such as a photoelectric smoke detector, it takes time to normally start even if the power supply voltage is suddenly applied. In order to test such a sensor or write data, by setting the second voltage application mode, voltage is applied and the capacitor is charged before the operation of starting the data writing or the remote test to enable the operation. Established to prevent malfunction due to delay in capacitor charging.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is an explanatory view of an embodiment showing the appearance of a remote tester of the present invention. In FIG. 1, the remote tester 1 of the present invention is provided with a power switch 2 on the left side surface of the tester main body 1a, and when the power switch 2 is turned on, the power indicator lamp 3 provided on the front upper part is turned on. Remote tester 1
The power source uses a built-in battery. Tester body 1a
A mode selector switch 4 is provided in the center of the front of the
A selection switch 5 is provided on the upper part, and an execution switch 6 is further provided on the lower part.

A data registration display section 8 and a test mode display section 9 are provided corresponding to the mode changeover switch 4. The data registration display section 8 has a setting mode indicator 8a which lights up when a setting mode for writing data such as a detector number on the fire detector side is selected, and a confirmation mode indicator 8b which lights up in a confirmation mode after data registration. Is provided. Further, the data registration display section 8 is provided with a photoelectric operation mode indicator lamp 8c.

The photoelectric operation mode indicator lamp 8c has a special function when the power switch is turned on while the mode changeover switch 4 and the execution switch 6 are pressed when the fire detector for data registration and test is a photoelectric smoke detector. The operation mode of the photoelectric smoke detector is set by operation and the light is turned on. Since the test mode display section 9 displays the set operation mode,
Three mode indicator lights 9a, 9b, 9c are provided.

Specifically, a normal test mode indicator light 9a that lights up when the normal test mode is selected, a repeat test mode indicator light 9b that lights up when the repeat test mode is set, and a dwelling unit receiver provided in the fire alarm system. The GP3 test mode indicator lamp 9c that lights up in the GP3 test mode for testing the GP3 class receiver is provided. A 7-segment LED 7 for displaying two digits is provided on the left side of the selection switch 5 on the upper part of the tester body 1a. 7 segment LED7
The numbers and alphabets associated with the operation of the remote tester 1 are displayed on. Further, a test result indicating lamp 11 is provided corresponding to the execution switch 6 on the lower side of the main body 1a. The test result indicating lamp 11 uses, for example, a two-color LED. When the test result is normal, the green LED lights up, and when the test result is abnormal, the red LED lights up.

On the upper part of the tester main body 1a of the remote tester 1, a pair of sensor connection terminal portions 10 and a relay connection connector 12 are provided. The sensor connection terminal portions 10 are arranged so as to project upward from both sides of the upper surface 1b of the remote tester 1, and the relay connector 12 is provided in the center of the upper surface 1b between the sensor connection terminal portions 10 on both sides. Has been. FIG. 2 is a plan view of the remote tester 1 of FIG. Remote tester 1
A repeater connecting connector 12 is provided in the center of the upper surface 1b of the sensor, and the sensor connecting terminal portions 10 are located on both sides thereof.
As shown in the partial cross-section of FIG. 3, the sensor connection terminal portion 10 has a fitting metal fitting 10a and a fitting spring 10b pressed downward from the fitting metal fitting 10a, which are screwed together. It is assembled and fixed at a position bent downward by 10c.

An upper cover 10d is located above the fitting fittings 10a and fitting springs 10b on the opening side.
0a and the fitting spring 10b are opened to the front and to the side where fitting is possible, but the upper side is insulated to prevent contact with the outside. FIG. 4 shows a remote test performed by connecting the remote tester 1 of the present invention to a repeater of a fire alarm system. Since the remote tester 1 of the present invention is provided with the repeater connecting connector 12 on the upper surface 1b, one end of the connector cable 13 is connected to this repeater connecting connector 12, and the other end of the connector cable 13 is on the repeater 15 side. By connecting to the tester connector 14 provided in
Remote testing of fire detectors connected to the side can be performed.

FIG. 5 is an explanatory view of a case where a fire detector alone is fitted and connected to the remote tester 1 of the present invention to perform data registration. The fire detector 16 is provided with a pair of L-shaped bent fitting terminals 17 on the back side for fitting with the base provided on the ceiling, and the fitting terminals 17 are provided on both upper sides of the tester body 1. By pushing the pair of sensor connection terminals 10 provided through the opening in the front, as shown in the upper fire sensor 16 ′, the fitting terminal 17 has the sensor connection terminal portions 10 as shown by arrows. To be electrically connected and mechanically fixed.

FIG. 6 shows the connection state of the connector cable 13 to the repeater 15 of FIG. 4 and the fitting connection state of the fire detector 16 of FIG. 5 for comparison. FIG. 6 (A)
In the connection state of the connector cable 13, the connector cable 13 is connected to the relay connector 12 provided at the center of the upper surface 1b of the tester body 1a. Therefore, even if an attempt is made to fit and connect the fire detector 16 to the pair of sensor connection terminal portions 10 on both sides of the upper portion of the tester body 1a as shown in FIG. The connection hinders the fitting of the fire detector.

On the other hand, as shown in FIG. 6B, the fitting terminals 17 of the fire detector 16 are pushed into the pair of detector connection terminal portions 10 provided on both sides of the upper portion of the tester body 1a. When a fitting connection is made by being sandwiched between the fitting metal fitting 10a and the fitting spring 10b, the fire detector 16 blocks the portion of the relay connection connector 12 provided in the center of the upper surface 1b, and FIG. ), The connector cable 13 cannot be connected. As described above, the remote tester 1 of the present invention has a structure that allows only one of the connection of the connector cable 13 and the fitting connection of the fire detector 16 to the tester main body 1a.

FIG. 7 is an explanatory view when a waterproof fire detector is connected to the remote tester 1 of the present invention for data registration. The waterproof fire sensor 16A, which is the target of data registration in FIG. 7, is provided with a pair of fittings 17a on the base side. The fittings 17a are the non-waterproof ordinary fire detectors of FIG. Not used for electrical connections like 16,
It is used to mechanically fit and fix the sensor to the sensor base on the ceiling side.

The electrical connection of the waterproof fire detector 16A is performed by using a pair of lead wires 16a drawn out by a shield structure. The lead wire 16a is connected to a connection terminal 16b having a forked end, and the connection terminal 16b is connected to the sensor connection terminal portion 1 of the remote tester 1.
The waterproof fire sensor 16A is connected to the remote tester 1 by pushing it between the fitting metal fitting 10a of 0 and the fitting spring 10b as illustrated.

Here, as shown in FIG. 4, when the power switch 2 is turned on with the connector cable 13 connected to the repeater connector 12, the normal test mode indicator 9a of the test mode display section 9 lights up and the normal test is performed. The mode is initialized. The normal test mode that has been initialized is switched to the repeat test mode in which the repeat test mode indicator lamp 9b is turned on by pressing the mode changeover switch 4, and is switched to the GP3 test mode in which the GP3 test mode indicator lamp 9c is turned on by pressing the switch again. Press again to return to normal test mode. Even after the start-up by turning on the power, when the connector cable 13 is connected to the relay connector 12, the normal test mode is set.

Also, as shown in FIG. 5 or 7, when the non-waterproof type fire detector 16 or the waterproof type fire detector 16A is connected to the detector connection terminal portion 10 of the remote tester 1, the power switch 2 is turned on. Then, the setting mode indicator 8a of the data registration display section 8 lights up and the data registration mode is initialized. The initially set data registration mode is switched to the confirmation mode in which the confirmation mode indicator lamp 8b lights up by pressing the mode changeover switch 4, and returns to the data registration mode when pressed again. The data registration mode is set even when the power switch 2 is turned on without connecting the fire detector to the detector connection terminal portion 10.

Further, the mode change switch 4 and the execution switch 6 are set regardless of the connection state of the connector cable 13 of FIG. 4 or the connection state of the fire detectors of FIGS. 5 and 7.
When the power switch 2 is turned on while pressing, the photoelectric operation mode indicator lamp 8c is turned on, and the operation mode in which the fire sensor to be data registered and tested is the photoelectric smoke sensor is set.

FIG. 8 shows the remote tester 1 of the present invention shown in FIG.
The circuit block of is shown with the fire alarm system.
In FIG. 8, the remote tester 1 of the present invention is connected to the repeater 15 of the fire alarm system by the connector cable 13 as shown in FIG. 4 during the remote test. The connector cable 13 includes L line, C line, OK line, ST line and ST line.
It is composed of 5 lines, C line. A plurality of fire detectors 16-1 are connected to the repeater 15 via detector lines 38a and 38b.
16-n are connected, and a terminating resistor 39 is connected to the end. A dwelling unit receiver 18 known as a GP3 receiver is connected to the repeater 15, and an outdoor display 19 is connected to the dwelling unit receiver 18.

The remote tester 1 has a built-in battery 20 as a power source, and a power management circuit 21 is provided following the battery 20. A power switch 2 is provided in the power management circuit 21, and a power save signal E1 is given from the MPU 26. When the power switch 2 is turned on, the power management circuit 21 outputs a specified power supply voltage from the battery 20, for example, 12 volts.

After the power switch 2 is turned on, the MPU 26 outputs a power save output signal E1 when a state without an event in which a setting operation or a test operation is not performed continues for a certain time, and the power management circuit 21 receives the power output signal E1. Enter the power save state to stop the output. Once in the power save state, the power switch 2 can be turned off and then turned on again to restore the original power supply state.

The 12 volt output voltage from the power management circuit 21 is the power detection signal E2 resulting from the voltage division of the resistors R1 and R2.
Is given to the MPU 26 as
It is read by the D converter 36 to monitor the power source of a low battery or the like. Following the power management circuit 21, a DC / DC converter 22 with a power save function is provided. The DC / DC converter 22 boosts an input voltage of 12 volts to, for example, 23.5 volts and outputs the boosted voltage.

MP for the DC / DC converter 22
The start control signal E3 is given from U26, and the start control signal E3 is provided at the start of the registration operation or the test operation of the remote tester 1.
Power saving is canceled by outputting 3 and DC / DC
The converter 22 is activated to output the boosted voltage. Further, by stopping the activation control signal E3, the DC / DC converter 22 is switched to the power save mode in which the operation is stopped.

After the DC / DC converter 22, a voltage control circuit 23 and an output buffer circuit 24 are provided. The voltage control circuit 23 uses the fire detectors 16-1 to 16-
A signal for performing a data write operation or a read operation to a CMOS serial type EEPROM which is a nonvolatile memory provided on the n side is output as a combination of voltage pulses having different levels.

That is, the MPU 26 is an EEP on the fire detector side.
At the time of data writing operation to the ROM, a write operation code, a write address, and a serial bit string of write data are output in synchronization with the clock, and bit 0 of this serial bit string is output.
And bit 1 are divided and applied to the voltage control circuit 23 as a bit 0 signal E5 and a bit 1 signal E6.

When there is no input of the bit 0 signal E5 or the bit 1 signal E6 from the MPU 26, the voltage control circuit 23 outputs the output voltage of the output signal E7 between L and C to the repeater 15 via the output buffer circuit 24. As
For example, it outputs 11 volts. Bit 0 in this state
When the signal E5 is input, the voltage between L and C due to the output signal E7 is changed to, for example, 23 volts. Further, when the bit 1 signal E6 is input, the voltage between LC is changed to, for example, 18 volts. As a result, the serial bit string for the writing operation from the MPU 26 is converted into voltage pulses corresponding to the bits 0 and 1, and is transmitted to the fire detectors 16-1 to 16-n via the repeater 15.

On the other hand, the MPU 26 includes the fire detectors 16-1 to 16-1.
In the read operation for reading the data of the EEPROM on the 16-n side, the read operation code, the read address, and the bit string of bit 0 necessary for the shift clock necessary for the serial bit output of the read data are output in synchronization with the clock. . Also in this case, the voltage control circuit 2 is driven by the bit 0 signal E5.
3 changes the voltage between L and C to 23 V, converts the voltage between L and C to 18 V by the bit 1 signal E6, and the voltage pulse corresponding to the serial bit string for the read operation is transmitted through the relay 15. It transmits to the fire detectors 16-1 to 16-n.

The repeater 1 is provided via the output buffer circuit 24.
A current detection circuit 25 is provided for the L-C line for No. 5. The current detection circuit 25 detects the alarm current flowing in the test alarm of the fire detectors 16-1 to 16-n under the control of the remote tester 1, and outputs MP as the current detection signal E8.
It is supplied to U26, converted into digital data by the A / D converter 35, and taken in.

As described above, in the remote tester 1 of the present invention, the control of the fire detectors 16-1 to 16-n is performed in the voltage mode, and the fire detectors 16-1 to 16-1 corresponding thereto are controlled.
The response from 6-n is done in current mode. Here, the terminals 10L and 10C to which the L line and the C line are branched and connected from the output buffer circuit 24 of the remote tester 1 become the connection terminals provided in the pair of sensor connection terminal portions 10 in FIG.

A voltage divider circuit in which resistors R3 and R4 are connected in series is provided on the output side of the DC / DC converter 22, and a detection signal E4 is supplied to the MPU 26 as the divided voltage, and A
It is captured by the / D converter 34. This detection signal E
4 is the remote tester 1 with the connector cable 13 and the repeater 1
5, the detector line 38 of the fire detectors 16-1 to 16-n pulled out from the repeater 15 at the time of the test connected to
It is used to detect a short circuit between a and 38b.

Regulators 27 and 28 are provided on the MPU 26 side.
Is provided. The regulator 27 is the power management circuit 2
The power of 12V output from 1
A / D converters 34, 35, 3 used in U26
It produces 3 volts, which is the reference voltage for 6. The regulator 28 produces 5 V for operating the MPU 26 and peripheral circuits.

An oscillator 29 is externally connected to the MPU 26, and various timing clocks are generated based on the oscillation clock of the oscillator 29. This MPU
26, as shown on the lower side thereof, the mode changeover switch 4, the selection switch 5, and the execution switches 6 and 7 shown in FIG.
Segment LED 7, power supply indicator light 3, mode indicator lamps 8a to 8c for registration mode, test mode indicator lamps 9a to 9c,
Further, a test result indicating lamp 11 is provided. The test result indicating lamp 11 is composed of a green LED 11a and a red LED 11b. Further, a buzzer 30 for outputting a sound is connected to the MPU 26.

Further, the remote tester 1 is provided with an in-test signal output circuit 31 and a normal signal output circuit 32 for performing a remote test. The test-in-progress signal output circuit 31 operates by receiving 12-volt power supply with the power switch 2 turned on, and then operates the execution switch 6 to start the test when the execution switch 6 is turned on. In response to the start signal E9, the in-test signal E10 of 12 volts, for example, is output to the repeater 15 through the ST line.

The relay 44 is connected between the connection terminals of the ST line and the STC line of the repeater 15, and the relay 44 operates upon receiving the in-test signal E10 from the remote tester 1. A diode D1 for storing electric charge when the relay 44 is turned off is connected in parallel to the relay 44. Relay 44
Has a switching relay contact 44a and a relay contact 44b.

The switching relay contact 44a is the L line from the remote tester 1 to the repeater 15 and the detector line 38 on the side of the fire detectors 16-1 to 16-n drawn from the repeater 15.
It is provided between a and a and is switched to the a side to which the SL line from the dwelling unit receiver 18 is connected at the time of steady monitoring. On the other hand, when the relay 44 is activated by the in-test signal E10 in the connected state of the remote tester 1 as shown in FIG. 4, the L line from the remote tester 1 is switched to the connected side b.

As a result, the sensor lines 38a and 38b can be disconnected from the dwelling unit receiver 18 and switched to the remote tester 1 side during the remote test. Relay contact 4
4b is turned on by the operation of the relay 44 by the signal E10 during the test to notify the dwelling unit receiver 18 that the remote test has been switched, so that the switch will not be mistakenly judged to be the disconnection of the sensor lines 38a and 38b.

Further, the remote tester 1 is provided with a normal signal output circuit 32. The normal signal output circuit 32 operates by receiving a power supply voltage of 12 V from the power management circuit 21 when the power switch 2 is turned on, and the remote test of the fire detectors 16-1 to 16-n is completed by the MPU 26. Then, the control signal E output when it is determined that the test result is normal
Upon receipt of 11, the OK signal E12 is output to the repeater 15.

The OK signal E12 is the connector cable 13
To the repeater 15 by the OK line. The OK signal E12 from the OK line is input to the confirmation notification circuit 45. The confirmation transfer circuit 45 is composed of resistors R5, R6 and R7 and a transistor Q1. The OK signal E from the remote tester 1 is sent to the confirmation transfer circuit 45.
In response to 12, the transistor Q1 is turned on, the SL line and the SC line of the dwelling unit receiver 18 are short-circuited, and a pseudo-reporting current is flowed. It is confirmed that the test result is normal.
Tell.

The receiver 18 for a dwelling unit that has received the OK signal transfer by the operation of the confirmation transfer circuit 45 is an outdoor display unit 19.
A warning sound and a warning display signal by a voice synthesis signal are output to. In this fire alarm system, the repeater 15
Since the outdoor display 19 is installed outside the dwelling unit,
The output of the alarm sound from the outdoor display 19 and the blinking of the alarm indicator light based on the transfer of the OK signal to the receiver 18 for the dwelling unit allows the test results to be received by the receiver 18 for the dwelling unit without entering the dwelling unit.
You can check the operation including. Note that the dwelling unit receiver 18 itself, which has received the OK signal transfer, does not perform the alarm operation because it receives the signal during the test by turning on the relay contact 44b.

The MPU 26 provided in the remote tester 1 is provided with a test control section 40, a mode setting section 41, a writing control section 42 and a test result judging section 43. Here, prior to the test of the fire detectors 16-1 to 16-n by the remote tester 1, as shown in FIG. 5 or 7, the fire detector 16 alone is directly connected to the remote tester 1, Write control unit 42
The connection number data indicating the number of connected sensors and the sensor number of each sensor are registered in advance.

Here, the fire detector 16-1 connected to the head positions of the detector lines 38a and 38b is defined as the master fire detector of detector number 1, and the master fire detector 16-1 is connected to the detector line 38a. , 38b, the number-of-connections data indicating the number of connected sensors is registered in advance. At the start of the test, the test control unit 40 of the MPU 26 first reads out and recognizes the connection number data stored in the master fire detector 16-1, and then parallelizes the detector number data of the fire detectors 16-1 to 16-n. By reading out, the fire detector 16-1
The test operation is performed in the order of 16-n.

The test result judging section 4 provided in the MPU 26
3 is the alarm current of the detector line due to the test alarm when the remote test of the fire detectors 16-1 to 16-n is performed,
The test result of the fire detectors 16-1 to 16-n is normal or abnormal, which is detected based on the current detection signal E8 from the current detection circuit 25 and based on the connection number data read from the master fire detector 16-1. Deciding.

That is, if all the test results of the fire detectors 16-1 to 16-n are normal, the green LED 11a of the test result indicating lamp 11 is turned on to display that the test result is normal. On the other hand, fire detectors 16-1 to 16-n
If at least one of the test results is abnormal, the red LED 11b of the test result indicating lamp 11 is turned on to display that the test result is abnormal. Details of the control processing of the test control unit 40 and the test result determination unit 43 will be further clarified in the later description.

FIG. 9 shows an embodiment of the fire detectors 16-1 to 16-n provided in the fire alarm system of FIG. 8, taking the master fire detector 16-1 located at the head of the detector line as an example. . In FIG. 9, the master fire detector 16-1
Is composed of a terminal circuit section 46 and a sensor circuit section 47. The sensor circuit section 47 includes a sensor circuit 53, a reporting circuit 55,
A constant voltage circuit 52 and a test circuit 54 are provided.

The sensor circuit 53 is provided with a temperature detecting element such as a thermistor for detecting the temperature due to a fire, and when the temperature exceeds a predetermined temperature, the sensor circuit 53 outputs a fire detection signal to the alarm circuit 55. When the alarm circuit 55 receives the fire detection signal from the sensor circuit 53, it turns on a switching element such as a transistor, and a sensor line (power source / signal line) from the relay device 15 connected between the terminals LC. Short-circuiting between 38a and 38b to a low impedance allows a warning current to flow, and normally, a warning signal is output to the dwelling unit receiver 18 via the repeater 15.

The constant voltage circuit 52 supplies a constant voltage to the sensor circuit 53. The test circuit 54 operates when receiving the test signal E15, causes the sensor circuit 53 to operate in a pseudo manner, outputs a fire detection signal to the reporting circuit 55, and causes the fire detector 16-1 to issue a test report. . The interface circuit 48 and the EEPR are provided in the terminal circuit section 46 of the fire detector 16-1.
OM49 is provided. As the EEPROM 49, for example, a CMOS serial EEPROM known as S29130A manufactured by Seiko Instruments Inc. can be used. The EEPROM 49 writes or reads by taking the data input DI in synchronization with the rising edge of the shift clock SK after setting the chip select CS to the H level for all the instructions.

An instruction is input in the order of a start bit, an instruction designated by an operation code, an address, and data. In the master fire detector 16-1 of the present invention, the connection number data 50 is written in the address 37 of the EEPROM 49, and the detector number data 51 is written in the address 38. Master fire detector 16-1
For fire detectors 16-2 to 16-n other than EE
Only the sensor number data 51 is written in the address 38 of the PROM 49.

Taking the 16-bit data as an example, the sensor number data 51 is a bit in which 1 bit is assigned to each sensor in order from the upper bit corresponding to the sensor numbers 1 to 16 and the rest is 0. The data. That is, in the master fire detector 16-1 with the detector number 1, the detector number data 51 is "1000 ... 00", and the next fire sensor 16-2 with the detector number 2 is shown. Is "0100
···················
1 ”.

In the test operation by the remote tester 1 of the present invention shown in FIG. 8, first, the connection number data 50 stored in the address 37 is read. That is, EEPRO
A command from the data input DI to M49 is input in the order of a start bit, a read opcode, and an address, whereby a read operation of the connection number data 50 of the designated address 37 is started, and in synchronization with the shift clock SC. , 16-bit data is serially output as the data output DO in order from the upper bits.

Further, in the read operation for designating the address 38 which is performed after the read of the connection number data 50, in all the fire detectors 16-1 to 16-n, the data input DI from the data input DI to the respective EEPROM 49 is inputted. The instruction is start bit, read opcode, read address 3
8 is input in this order, and the read operation of the specified address 38 is started by this, and thereafter, 16-bit sensor number data 51 is serially output as the data output DO in order from the upper bit in synchronization with the shift clock. It

The plurality of fire detectors 16-1 to 16-n
The parallel reading of the sensor number data 51 in 1) causes the serial bit output DO to become bit 1 because the allocation position of bit 1 of each sensor number is different.
Bit 1 is given in the order of serial output synchronized with the shift clock, and this bit 1 is given to the test circuit 54 as the test control signal E15 to cause the test operation by the pseudo alarm operation of the sensor circuit 53 to be performed in order. Become.

FIG. 10 shows the master fire detector 16-1 of FIG.
9 is a timing chart of a connection number data read operation performed from the remote tester 1 of FIG. 8 at the start of the test operation. As shown in FIG. 10 (A), when the power switch 2 is turned on at time t1, the remote tester 1 is in operation. Then, when the execution switch 6 is turned on in the selected state of the normal test mode, the activation control signal E3 is output by falling from the H level to the L level at time t2, as shown in FIG. Therefore, the DC converter 22 cancels the power saving and starts the operation, and outputs the signal between the L and C lines to the repeater 15 via the voltage control circuit 23 and the output buffer circuit 24 as shown in FIG. The voltage is 11 volts. Further, as shown in FIG. 10B, when the execution switch 6 is turned on, the in-test signal E10 rises to 12 volts, and the relay 44 of the repeater 15 is activated.

Therefore, the relay contact 44a is changed from the a side to the b side.
To the remote tester 1 side by disconnecting the sensor lines 38a and 38b from the dwelling unit receiver 18 and switching to the remote tester 1 side. At the same time, the relay contact 44b is closed to notify the dwelling unit receiver 18 that the test is in progress. Subsequently, as shown in FIGS. 10D and 10E, since the MPU 26 reads the connection number data 50 stored in the address 37 of the EEPROM 49 of the master fire detector 16-1 of FIG. 9, bit 0 of the serial bit string is read. It outputs a bit 0 signal E5 corresponding to and a bit 1 signal E6 corresponding to bit 1. Bit 0 signal E
5 becomes effective at the L level, and at this time, the voltage control circuit 23
Changes the L-C output voltage to 23 volts as shown in FIG.

Further, the bit 1 signal E6 of FIG.
It becomes valid at the level, and at this time, the voltage control circuit 23 becomes L-
The output voltage between C is changed to 18 volts as shown in FIG. Therefore, as shown in FIG. 10F, the output voltage between L and C is bit 1 at 18 volts and bit 0 at 23 volts.
Represents a serial bit string of. The serial bit string sent by this voltage pulse, that is, the bit string for reading is
The head is a 2-bit dummy bit "00", the start bit is "1", the 2-bit read operation code is "10", and the connection number data 50 of FIG.
6-bit address “1001
01 ”. Next, in order to read the 16-bit connection number data 50 from the EEPROM 49 in synchronization with the shift clock, the data of all bit 0 is sent at the timing of the data bits D15 to D0.

Here, the connection number data is data bit D15.
The number of connected sensors is registered using the BCD code in 6 bits of D10. That is, in decimal 1, 2, 4, 8,
6-bit BCD code with weights of 16 and 32 "b0 b1
b2 b3 b4 b5 ”are the data bits“ D15
D14 D13 D12 D11 D10 "is supported, and any one of 1 to 32 can be designated as the number of connected sensors.

For example, in the case of FIG. 10, the number of connected sensors is 1.
Since there are six units, the BCD code is “D15 D14 D13 D12 D11 D10” = “000010”. As a result, bit 1 of the data bit D11 is read in synchronism with the shift clock of the data bit D11, is given to the test circuit 54 as the test control signal E15, and by the pseudo alarm operation of the sensor circuit 53, FIG.
The alarm current as shown in (D) is returned to the remote tester 1. Therefore, in the MPU 26 of the remote tester 1, the current detection signal E8 of the current detection circuit 25 is fetched at the timing of the shift clock to demodulate the BCD code "000010" and the connection number data is "16" in decimal. I can recognize that there is.

Master fire detector 16-1 as shown in FIG.
When the connection number data is acquired and recognized by the read control for the fire detectors 16-1 to 16-n by the read operation of the detector number data specifying the address 38 as shown in FIG.
The test operation of is performed sequentially. That is, the power save signal E3 of FIG. 11A is continuously at the L level,
(B) The bit 0 signal E5 and the bit 1 signal E6 of (C) are output corresponding to the serial bit string for the read operation of the address 38 of the EEPROM 49 which is the nonvolatile memory of the fire detectors 16-1 to 16-n. To be done.

Therefore, as shown in FIG. 11D, bit 0
Voltage control circuit 2 based on signal E5 and bit 1 signal E6
By controlling the output signal E7 of No. 3, the output voltage between L and C changes to 23 V for bit 0 and 18 V for bit 1 with 11 V as the standard level. This voltage pulse is the first 2
Bit dummy bit "00", start bit "1"
Is followed by a 2-bit read operation code "10",
Next is the 6-bit address "10011" of the read address 38.
Then, 16 voltage pulses of "0" for outputting the data bits D15 to D0 of 16-bit sensor number data are output from the EEPROM 49 after that.

Address 3 from such remote tester 1
In response to a read command designating eight, fire detectors 16-1 to 16-n including the master fire detector 16-1 shown in FIG. 9,
That is, in the 16 fire detectors 16-1 to 16-16, the detector number data 51 corresponding to the detector numbers "1" to "16" are stored in the address 38 of the EEPROM 49, and 16 bits are stored. Are sequentially output from the most significant bit D15.

Therefore, the serial bit output D0 of the master fire detector 16-1 having the detector number 1 becomes 1 at the output of the serial most significant bit D15, and the test operation of the fire detector is performed. As shown in FIG. 11E, the alarm current corresponding to the sensor number 1 is returned. Similarly, at the output timing of the serial bits D15 to D0, the serial bit output D0 to the fire detectors 16-2 to 16-16 becomes bit 1 and the test operation is performed.
If the test is normally issued, as shown in FIG. 11 (E), 16-pulse issuance currents of sensor numbers 1 to 16 are returned.

16 fire detectors 16-1 to 16-16
If a minute return current, that is, a test notification current can be received, the test is completed normally. Therefore, as shown in FIG. 11F, the remote tester 1 sends the OK signal E12 for 2 seconds, for example, to the repeater 1
Output to 5. Therefore, the transistor Q1 of the confirmation transfer circuit 45 of the repeater 15 of FIG.
The confirmation signal is transferred to 8, the voice alarm is output from the outdoor display device 19, and the alarm indicator lamp blinks. When such a series of test operations is completed, the execution switch 6 is pressed again to end the test and return to the normal monitoring state.

FIG. 12 shows the MPU 26 of the remote tester 1 shown in FIG.
4 is a flowchart of a mode setting process performed by the mode setting unit 41 provided in FIG. When the power switch 2 is turned on and the MPU 26 operates, first in step S1,
The mode switch 4 and the execution switch 6 shown in FIG.
Check if is on. Mode switch 4 and execution switch 6 when the power switch 2 is turned on
The ON operation of is the case where the fire detector targeted for data registration or testing is a photoelectric smoke detector, and if the power switch 2 is turned on while the mode changeover switch 4 and the execution switch 6 are pressed, In step S2, the operation mode of the photoelectric smoke detector is set.

The operation mode of this photoelectric smoke detector is shown in FIG.
Control signal E3 for the DC / DC converter 22 of
Is output at the same time when the power is turned on to release the power save, and the DC / DC converter 22 immediately outputs 2
A sensor that outputs a boosted voltage of 3.5 V, and that directly connects the fire detector alone between L and C, which is a detector line for the fire alarm system, from the voltage control circuit 23 through the output buffer circuit 24. Connection terminals 10L, 10
A voltage of 11 V is applied to C.

In the case of the photoelectric smoke detector, the reason why the voltage of 11 V is output to the detector at the same time when the power is turned on is that the photoelectric smoke detector usually has a built-in large capacity capacitor. It takes time for this capacitor to charge up to the specified power supply voltage after the power is turned on. Therefore, if a voltage of 11 V is applied between L and C at the start of the test when the execution switch 6 is turned on as in a normal fire detector, the voltage on the side of the detector becomes insufficient at the start of the test and at the time of writing data, It may cause malfunction.

In order to avoid such a malfunction due to a time delay at power-on, in the case of a fire detector including a large-capacity capacitor such as a photoelectric smoke detector, L Set the operation mode (second voltage application mode) that outputs a specified voltage between C and C (second voltage application mode), and complete the charging of the large-capacity capacitor on the sensor side before registering data or starting the test. ing.

Of course, in the case of a normal fire detector, since the mode changeover switch 4 and the execution switch 6 are not pushed, when the power switch 2 is turned on and the power is turned on, step S2 is skipped and the process proceeds to step S3. .
In step S3, it is checked whether the connector cable 13 is connected to the tester body as shown in FIG.

The connection detection of this connector cable is performed by the cable connection detection circuit 33 provided in the remote tester 1 of FIG. If the connector cable 13 is connected to the repeater connection connector 12, the connector terminals G and C of the connector cable 13 are short-circuited in advance by the crossover wire 37 as shown in the figure, so that the cable detection circuit 33 can be connected. The cable connection detection signal E13 is output to the MPU 26, and it is determined that the connector cable 13 is connected.

On the other hand, when the connector cable 13 is not connected, the connection between the connector terminals G and C is opened, the cable connection detection signal E13 from the cable connection detection circuit 33 is not obtained, and the MPU 26 connects the connector cable 13. Can recognize that there is no. When it is determined in step S3 that the connector cable 13 is connected, the process proceeds to step S4, and the normal test mode is initialized. When the normal test mode is initially set, the normal test mode indicator lamp 9a lights up, and the remote test for the fire detector of the fire alarm system can be performed.

In the next step S5, it is determined whether or not the mode changeover switch 4 is turned on. When the mode changeover switch 4 is pressed, the process proceeds to step S6, the repeat test mode is set, and the repeat test mode indicator lamp 9b is set. Lights up. In this state, if it is determined in step S7 that the mode switch 4 is turned on, the GP3 test mode is set in step S8, and the GP3 test mode indicator lamp 9c is turned on. In this state, when it is determined that the mode switch 4 is turned on as in step S9, the normal test mode in step S4 is returned to again.

On the other hand, when the connection of the connector cable is not detected in step S3, the process proceeds to step S10, the data registration mode is set, and the setting mode indicator lamp 18
Light a. At this time, since the fire detector is independently connected to the remote tester 1 as shown in FIG. 5 or 7, data such as detector number data can be registered.

In this state, when it is determined that the mode changeover switch 4 is turned on as in step S11, step S12 is performed.
Confirmation mode indicator lamp 18
b lights up. In this confirmation test mode, it is possible to confirm and test registered data such as the detector number of the fire detector alone after data registration. When it is determined in step S13 that the mode switch 4 is turned on in the confirmation mode, the process returns to the data registration mode in step S10.

In the flow chart of FIG. 12, the judgment of the switching of the connector cable 13 by the connection of the repeater connector 12 is made only when the power is turned on. However, in reality, even after the power is turned on, the switching is always performed. Done. Specifically, in the data registration mode of step S10 and the confirmation test mode of step S11, the connector cable 1
When it is determined that there is a connection in step 3, the normal test mode in step S4 is set, and the write operation is prohibited. When it is determined that the connector cable 13 is not connected in the normal test mode of step S4, the repeated test mode of step S6, and the GP3 test mode of step S4,
The data registration mode of step S10 is set.

FIG. 13 shows that the operation mode (second voltage application mode) of the photoelectric smoke detector in step S2 of FIG. 12 is set, the normal test mode of step S4 is proceeded to, and the connection number data for the master fire detector is set. 5 is a timing chart when the reading control of is performed. As shown in FIG. 13 (A),
When the power switch 2 is turned on at time t1 and the mode switch 4 and the execution switch 6 are simultaneously pressed at this time, the operation mode (second voltage application mode) of the photoelectric smoke detector in step S2 of FIG. Is set. In the operation mode of the photoelectric smoke detector, at the same time as the power switch 2 is turned on at time t1, the activation control signal E3 is output and becomes L level as shown in FIG. 13 (C).

As a result, as shown in FIG. 13 (F), the output voltage between L and C rises to 11 V when the power is turned on, and charging of the large-capacity capacitor built in the photoelectric smoke detector is started. To do. Therefore, the charging of the capacitor of the photoelectric smoke detector is completed by the time t2 when the execution switch 6 is turned on to start the remote test. When the execution switch 6 is turned on, the in-test signal E10 becomes an effective level of 12 volts as shown in FIG. 13 (B).

The L-C of FIG. 13 (F) output after that
The output voltage during the period is set to 11V and the bit 0
The output is accurate to 23 V and 18 V for bit 1, and even if the photoelectric smoke detector has a large-capacity capacitor, it is not affected by the time delay due to charging of the photoelectric smoke detector. EEPROM address 3
It is possible to reliably read the connection number data stored in 7.

FIG. 14 shows the MP provided in the remote tester 1 of FIG.
7 is a flowchart showing the processing in the normal test mode by the test control unit 40 of U26, including the processing of the test result determination unit 43. Connect the connector cable 13 to the repeater connection connector 12 of the tester main body and the tester connection connector 14 of the repeater 15, turn on the power switch 2 of the remote tester 1 and select the normal test mode. When the execution switch 6 is turned on in S1, the process proceeds to step S2 and, as shown in the timing chart of FIG.
7 is transferred to the fire detector side, and EEPRO of the master fire detector 16-1 with the detector number 1 shown in FIG.
The connection number data 50 of the address 37 stored in M49 in advance is acquired.

Subsequently, if the connection number data can be normally acquired in step S3, the process proceeds to step S4, the read command of the address 38 is transferred as shown in the timing chart of FIG. 11, and the sensor number stored in the address 38 is transferred. The test operation of the fire detectors 16-1 to 16-16 is sequentially started by serially reading the detector number data 51 composed of the corresponding BCD code.

During the test, the presence / absence of a test report is checked in step S5. If there is a test report, a counting operation for counting up the test report number by 1 is performed in step S6. The processes of steps S5 and S6 are repeated until it is determined in S7 that the serial reading has ended. When the end of serial reading is determined in step S7, the process proceeds to step S8, and the connection number data acquired and recognized in step S2 is compared with the test report number counted in step S6.

If they match, the normal test result is displayed in step S9. The normal display of this test result is shown in Figure 1.
The remote tester 1 displays the test result “normal” by turning on the test result display lamp 11 in green. The final sensor number "16" that matches the connection number data is displayed on the 7-segment LED 7. On the other hand, step S
If the number of test reports does not match the number-of-connections data in step 8, abnormal display of the test result is performed in step S10. Regarding the abnormal display of the test result, the test result display lamp 11 in the remote tester 1 of FIG. Again 7
The final sensor number "16", the sensor number in which the error code abnormality is detected, is sequentially displayed on the segment LED 7 at regular intervals. After the sequential display of these three pieces of information, the error code and the sensor number in which the abnormality is detected are alternately and repeatedly displayed.

FIG. 15 is an explanatory diagram of the error code displayed on the 7-segment LED of FIG. 1 in the abnormal display in step S10 of FIG. In this embodiment, four error codes E1, E2, E3 and E4 are set. The abnormality content of the error code E1 is the duplication of the sensor numbers, and the determination of this abnormality content can be made by determining that the alarm current becomes, for example, twice or more during the test operation. As a countermeasure against the duplication of the sensor number of this error code E1,
This is the process of resetting the sensor number to the correct number.

The error content of the error code E2 is that the error has occurred in a sensor whose number is smaller than the connection number data or the sensor is not connected. The content of this error code E2 can be determined by the fact that the number of test issuances is less than the connection number data. As a countermeasure against the error code E2, the sensor having the sensor number displayed on the tester is replaced or newly installed.

The error code E3 indicates that more sensors than the connection number data are connected or that the connection number data is set incorrectly. The content of the error code E3 can be determined by the number of test issuances exceeding the connection number data. In this case, the countermeasure is to confirm and correct the connection number data of the master fire detector with the detector number 1, or remove the unnecessary detector.

Further, the error code E4 is an abnormality in the connection number data, and it is judged when the connection number data is not read from the sensor side even if the address 37 is read. As a countermeasure, the connection number data of the master fire detector with the detector number 1 may be confirmed and registered or corrected, or the master fire detector may be connected. Further, regarding the error codes E1 to E4 in FIG. 10, when the same abnormality occurs in a plurality of fire detectors, the code "E" of the error code is changed to the display of the code "A", and it is a multiple abnormality. Show.

In addition to the error code indicating the abnormality associated with the fire detector test shown in FIG. 15, the abnormality code "L1" is displayed when a short circuit of the detector line is detected during the test operation. If the alarm current is continuously detected during the test, the abnormal code "FF" indicating the occurrence of a true fire is displayed. As described above, in the remote tester of the present invention, when an abnormality in the test result is determined, an error code or the like is displayed, and the content of the abnormality is known from this error code or the like, and the countermeasure against the abnormality can be swiftly and appropriately dealt with. Can be done.

In addition to the remote test in the normal test mode, the remote tester 1 of the present invention shown in FIG.
It is also possible to perform a test in the P3 test mode. That is, as shown in FIG. 4, when the power switch 2 is turned on while the connector cable 13 is connected, the normal test mode indicator lamp 9a is turned on and the normal test mode is initially set. When operated, the mode is switched to the repetitive test mode and the GP3 test mode, switched to the displays of the repetitive test mode indicator 9b and the GP3 test mode indicator 9c, respectively, and returns to the normal test mode again.

In the repetitive test mode, by operating the execution switch 6, the test of all the fire detectors is repeated. Up to this point, it is the same as in the normal test mode, but in the repeat test mode, when one test of all fire detectors is completed, the test result display lamp 11 displays the normal or abnormal test result. When the result is displayed, the next test operation is automatically started, and this is repeated until the test is completed by operating the execution switch 6.

The display of the test results in this repeated test mode is the same as in the normal test mode. That is, if the test result is normal, the test result indicator lamp 11 lights up in green, and the final sensor number is displayed on the 7-segment LED 7. On the other hand, if the test result is abnormal, the test result indicator lamp 11
Lights up in red, and the sensor number in which the last sensor number error code is detected is displayed in sequence.After that, the error code and the sensor number in which the error is detected are displayed alternately, and then again. The test begins.

On the other hand, in the GP3 test mode, the remote test of the fire detector is not performed, and the OK signal E12 is output from the normal signal output circuit 32 of FIG. Turn on the transistor Q1 of
The sensor line side of the dwelling unit receiver 18 is short-circuited to a low impedance and a pseudo alarm is issued to confirm the receiving operation of the dwelling unit receiver 18 and the alarm operation of the outdoor display unit 19.

Further, as shown in FIG. 5, the data registration mode performed by fitting and connecting the fire detector 16 to the remote tester 1 is as shown in FIG.
When the power switch 2 is turned on with the fire detector 16 connected, the data registration mode is automatically set. Specifically, the connector cable 1 for the remote tester 11 of FIG.
3 is short-circuited between the connection terminals G and C by the signal line 37. Therefore, when the connector cable 13 is connected, the cable connection detection circuit 33 outputs the cable detection signal E13 to M.
Inputting to PU26. Therefore, the MPU 26 can recognize the connection of the connector cable 13 and enter the test mode.

On the other hand, when the fire detector 16 is directly connected to the remote tester 1 as shown in FIG. 5, since the connector cable 13 is not connected, the terminals G and C are opened. Therefore, the cable detection signal E13 from the cable connection detection circuit 33 is cut off. When the power switch 2 is turned on in this state, the MPU 26 detects the cable detection signal E
When 13 is not obtained, it sets up in the data registration mode and starts up.

Therefore, when the power switch 2 is turned on when the fire detector 16 is connected as shown in FIG. 5, the setting mode indicator 8a is turned on to enter the data registration mode. In the data registration mode, the EEPROM 4 of the fire detector 16
The connection number data for 9 and the sensor number data are registered for writing. First, when the master fire detector 16-1 with the detector number 1 is fitted and connected to the remote tester 1 as shown in FIG. 5, the setting mode indicator lamp 8a is turned on by turning on the power switch 2. In this state, the selector switch 5 is operated to set the sensor number 1 in the 7-segment LED 7.
Then, when the execution switch 6 is pressed, the setting number of the 7-segment LED 7 blinks. In this blinking state, the selection switch 5 is operated to set the connection number data.

When the execution switch 6 is pressed again, the connection number data specifying the address 37 to the EEPROM 49 of the master fire detector 16-1 is written and the address 3 is written.
The sensor number "BCD code" designated 8 is written. In this case, regarding the output voltage between L and C, the 2-bit opcode of FIG. 10 becomes the write opcode “01”, the 6-bit address “100101” is followed by the data bit D.
For example, the BCD code "000010" corresponding to the sensor connection number "16" is sent to and written in 15 to D10 by a voltage pulse.

Regarding the writing of the sensor number data to the address 38, the read opcode is the write opcode "01" at the L-C output voltage of FIG. 11D.
Then, following the 6-bit address "100110", the pulse voltage corresponding to the 16 data bits D15 to D0 in which the bit position corresponding to the detector number is bit 1 is output.

Furthermore, with the fire detector 16 as shown in FIG. 5 directly connected to the remote tester 1, the data written in the fire detector 16 can be confirmed and tested. In this case, since the setting mode indicator lamp 8a is turned on when the power switch 2 is turned on, the display of the confirmation mode indicator lamp 8b is switched to the confirmation mode by pressing the mode switching switch 4.

When the execution switch 6 is pressed in this state, the write data is confirmed and tested. In this case, sensor number 1
In the No. master fire detector 16-1, the detector number and the connection number data are alternately displayed on the 7-segment LED 7. For other fire detectors, only the detector number is displayed. When the test result is abnormal, the 7-segment LED 7 displays an error code "E".

Further, in the connected state of the fire detector 16 to the remote tester 1 as shown in FIG. 5, when writing data to the photoelectric smoke detector, the mode changeover switch 4 and the execution switch 6 are pushed and the power is turned on. When the switch 2 is turned on, the operation mode of the photoelectric smoke detector is set, and the photoelectric mode indicator lamp 8c is turned on. In this case, as shown in the timing chart of FIG. 13, the startup control signal E3 is fixed to the L level at the same time when the power switch 2 is turned on, and
Power saving of the C / DC converter 22 is canceled and L
The output voltage of 11 volts is output from the beginning between −C.

In this case, a photoelectric smoke detector connected to the detector connection terminals 10L and 10C provided on the remote tester 1 as shown in FIG. Power supply voltage is supplied. For this reason,
The large-capacity capacitor provided in the photoelectric smoke detector is charged by the start of the test when the execution switch 6 is turned on, causing a malfunction due to insufficient charging of the capacitor provided in the detector during the test operation. No, the test operation is certainly possible.

In the above embodiment, the remote tester of 16 fire detectors connected to the detector line is taken as an example, but the number of fire detectors is EE provided in the detector.
If the data bit length of one address of PROM is exceeded, group it in units of 16 units, which corresponds to one address, and write the sensor number data at a different address. It is possible to carry out remote testing of fire detectors of a number of in sequence.

In addition, the voltage pulse of the command transmission for writing or reading from the remote tester to the fire detector side is:
11V is the standard level, bit 0 is 23V,
Although the case where the voltage is changed to 18 V by bit 1 is taken as an example, these voltage values can be appropriately determined as necessary. Furthermore, in the above-described embodiment, the system in which the CPU is not provided in the fire detector is taken as an example.
A system in which a CPU is provided and transmission is performed with the MPU of the remote tester may be adopted.

[0111]

As described above, according to the present invention, since the cable connection to the repeater connector is detected and the writing control section prohibits the writing operation to the fire detector of the fire alarm system, Even if the remote tester is equipped with a fire detector data write function, it is possible to reliably prevent malfunctions that accidentally rewrite the data of the fire detector during a remote test. You can use it properly.

Further, the remote tester of the present invention prevents the fire detector from connecting to the detector connecting terminal when the cable is connected to the repeater connecting connector, and conversely the fire detector to the detector connecting terminal. By connecting the repeater connection connector part with a cable when connecting, the remote test by the cable connection and the data registration by the direct connection of the fire detector can be clearly distinguished and used, and the operability can be improved. it can.

In the remote tester of the present invention, the test mode is set by detecting the cable connection to the repeater connection connector, and the data registration mode is set when the cable connection cannot be detected. You can automatically set the operation mode that corresponds to the physical cable connection and the connection status of the fire detector without the need for connection operation. Can be surely prevented from being changed.

The state of the mode setting associated with the power-on is indicated by the lighting of the mode indicator lamp, and it is easy to know what kind of operation mode it is in. Furthermore, by incorporating a large-capacity capacitor, there is a time lag from turning on the power until it is ready for operation.For photoelectric smoke detectors, for example, a special closing operation is required to operate other switches at the same time when the power is turned on. By doing so, the operation mode in which the voltage is applied to the sensor side at the same time when the power is turned on is set, and this causes the capacitor on the sensor side to be charged to rise to the operating voltage before the sensor test or data registration is started. To prevent malfunction due to delay in charging the capacitor.

[Brief description of drawings]

FIG. 1 is an external view of a remote tester of the present invention

FIG. 2 is a plan view of FIG.

3 is a cross-sectional view of the sensor connection terminal portion of FIG.

FIG. 4 is an explanatory diagram of a remote test state in which the connector cable is connected to the repeater.

[Fig. 5] Explanatory diagram of data registration state in which a fire detector is directly connected

FIG. 6 is an explanatory view of a cable connection state and a fire detector fitting state.

FIG. 7 is an explanatory view of connection to a sensor connection terminal using a lead wire of a waterproof fire sensor.

FIG. 8 is a circuit block diagram showing the circuit configuration of the present invention together with a fire alarm system.

9 is a circuit block diagram of the fire detector of FIG.

FIG. 10 is a timing chart of a read operation of connection number data from the master fire detector according to the embodiment of FIG.

FIG. 11 is a timing chart of a remote test operation by reading a sensor number of the fire detector according to the embodiment of FIG.

FIG. 12 is a flowchart of mode setting according to the embodiment of FIG.

13 is a timing chart showing the voltage application to the detector line when the operation mode of the photoelectric smoke detector is set in FIG. 12 by taking as an example the reading of the number-of-connections data.

FIG. 14 is a flowchart of test processing in a normal test mode according to the embodiment of FIG.

15 is an explanatory diagram of an error code, an abnormality content, a determination process, and a countermeasure according to the embodiment of FIG.

[Explanation of symbols]

1: Remote tester 1a: body 2: Power switch 3: Power indicator 4: Mode selector switch 5: Selection switch 6: Execution switch 7: 7 segment LED 8: Data registration display section 9: Test mode display 10: Sensor connection terminal 10a: fitting 10b: Mating spring 10c: screw 10d: Top cover 10L, 10C: Sensor connection terminal 11: Test result indicator light 11a: Green LED 11b: Red LED 12: Repeater connector 13: Connector cable 14: Tester connector 15: Repeater 16, 16-2 to 16-n: Fire detector 16-1: Master fire detector 16a: Lead wire 17: Mating terminal fitting 18: Receiver for dwelling unit 19: Outdoor display 20: Battery 21: Power management circuit 22: DC / DC converter 23: Voltage control circuit 24: Output buffer circuit 25: Current detection circuit 26: MPU 27, 28: Regulator 29: Oscillator 30: Buzzer 31: Signal output circuit during test 32: Normal signal output circuit 33: Cable connection detection circuit 34-36: A / D converter 40: Test control unit 41: Mode setting section 42: Write control unit 43: Test result judging section 44: Relay 44a: Switching relay contact 44b: Relay contact 45: Confirmation transfer circuit 46: Terminal circuit section 47: Sensor circuit section 48: Interface circuit 49: EEPROM (nonvolatile memory) 50: Number of connections data 51: Sensor number data 52: constant voltage circuit 53: Sensor circuit 54: Test circuit 55: Notification circuit

─────────────────────────────────────────────────── ─── Continuation of the front page (72) Naoto Yamano, 2-10-10 Kamiosaki, Shinagawa-ku, Tokyo No. 43-10 Hochiki Co., Ltd. (72) Sadataka Yuji 2--10, Kamiosaki, Shinagawa-ku, Tokyo No. 43 in Wochiki Co., Ltd. (72) Inventor Hiroshi Honma, Institute of International Electronics Technology, 8 Stock Company, 475 Hino, Hino City, Tokyo (56) References 7-272172 (JP, A) JP-A-7-272154 (JP, A) JP-A-8-7189 (JP, A) JP-A-9-91580 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) G08B 17/00

Claims (7)

(57) [Claims] 1. A remote test function for storing at least unique sensor number data at a predetermined address of a non-volatile memory and performing a test operation based on the designation of the sensor number data.
Alternatively, a plurality of fire detectors, a two-wire type detector line connecting the plurality of fire detectors, and the detector line normally connected to a dwelling unit receiver, and the detector for a fire detector test In a fire alarm system equipped with a repeater having a switching circuit for switching the line from the residential unit receiver side to the remote tester side, a repeater connector for connecting the repeater with a cable at the time of testing A pair of sensor connection terminals that are connected in parallel to a pair of sensor line connection connector terminals in the relay connection connector and that electrically connect the fire sensor by itself to the device body when writing data Section, a write control section for writing data such as the sensor number in a state where the fire sensor is fitted and connected to the sensor connection terminal section alone, and a cable connection to the relay connector. Remote testing device of a fire alarm system, characterized by comprising a test control unit for remote testing of the fire detector in a state that prohibits writing operation, the by the write control unit detects and. 2. The remote tester of the fire alarm system according to claim 1, wherein the pair of sensor connection terminals are provided on both sides of the upper surface of the tester body, and the pair of sensor connection terminals are connected to each other. A fire, characterized in that the repeater connection connector is provided between them, and only one of a fitting connection of a fire detector to the pair of sensor connection terminal portions or a cable connection to the repeater connection connector is possible. Remote tester for notification system. 3. The remote tester of the fire alarm system according to claim 1, wherein the detector connection terminal portion is arranged such that a fitting metal fitting and a fitting spring are arranged in a crimped state toward a front opening. A fire alarm characterized by a structure in which a fitting of a non-waterproof type sensor or a lead wire terminal of a waterproof type sensor is inserted between the fitting and the fitting spring by inserting it from the opening. System remote tester. 4. The remote tester of the fire alarm system according to claim 1, further detecting the presence / absence of a cable connection to the repeater connection connector, and when the cable connection is detected, the test control unit is activated. When the test mode is set to operate to test the fire detector of the fire alarm system and the cable connection is not detected, the data write control unit is operated to fit the detector connection terminal unit. A remote tester for a fire alarm system, which is provided with a mode setting unit for setting a data registration mode for writing data in the connected fire detector alone. 5. The remote tester for a fire alarm system according to claim 4, further comprising a mode indicator lamp for confirming an operation mode set by the mode setting unit. Tester. 6. The remote tester of the fire alarm system according to claim 4, wherein the write control unit operating in the data registration mode setting by the mode setting unit further confirms the write data and fires. A remote tester for a fire alarm system characterized by setting a confirmation test mode in which a test is performed on a single sensor. 7. The remote tester for a fire alarm system according to claim 4, wherein the mode setting unit detects a switch operation for starting a test or starting data registration after turning on a power switch, A first voltage application mode in which a voltage is applied to the sensor line connection line, and a second voltage in which a voltage is applied to the sensor line connection line upon detection of simultaneous operation of a power switch and another predetermined switch A remote tester for a fire alarm system characterized by setting an application mode.