JPH0796035B2 - Power supply equipment for disaster prevention equipment - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a power supply device for a disaster prevention facility such as a fire, gas leak, or theft prevention, and particularly to a plurality of devices sequentially when the power is turned on or when initial setting or restoration is performed. The present invention relates to a power supply device for disaster prevention equipment that is designed to be powered on.

[Prior Art] In a disaster prevention facility including a receiver and a plurality of terminal devices, when power is supplied from the receiver to the terminal device, conventionally, when the power of the receiver is turned on or when the initial setting process of the receiver is completed. Or, when the terminal equipment was restored, power was supplied to all the terminal equipment at once.

[Problems to be Solved by the Invention] For this reason, a very large inrush current instantaneously flows when energized, and the receiver must have a power supply with a sufficiently large capacity to withstand this inrush current. did not become.

Therefore, an object of the present invention is to provide a power supply device for disaster prevention equipment in which a large rush current due to simultaneous energization is prevented from flowing when the power is turned on.

Another object of the present invention is to provide a power supply device for a disaster prevention facility that can reduce the capacity of the power supply by preventing a large current from flowing all at once.

[Means for Solving Problems] According to the present invention to achieve these objects, a receiver, a relay as a plurality of terminal devices connected to the receiver, and the plurality of terminal devices are provided. A fire detector as a plurality of monitoring terminal devices connected to each of the above, a gas leak detector, or a monitoring sensor such as an anti-theft sensor, and the receiver from the receiver via each of the terminal devices. In a disaster prevention facility in which power is supplied to a monitoring terminal device, the receiver sequentially sends an energization command to the plurality of terminal devices when the power is turned on, when the initial setting process is completed, or when the monitoring terminal device is restored. Each of the terminal devices includes a command sending unit for sending a signal, and each terminal device has a command determining unit for receiving and determining the energizing command signal, and is turned on when the command determining unit determines that the energizing command signal is received. There is provided a power supply device for disaster prevention equipment, comprising: a power supply circuit that supplies power supplied from a receiver to the monitoring terminal device.

According to the present invention, the host device is a receiver or a repeater connected to the receiver, the host device including a host device and a plurality of monitoring terminal devices connected to the host device. In a disaster prevention facility in which the terminal device is a monitoring sensor such as a fire sensor, a gas leak sensor, or an anti-theft sensor, and power is supplied to the monitoring terminal device from the host device, the plurality of monitoring devices are used. The terminal equipment is divided into a plurality of blocks, and the monitoring terminal equipment of each of these blocks is connected to the host equipment via a line provided for each block, and the host equipment is supplied with power to the corresponding line. A plurality of energizing circuits and a sequentially energizing means for sequentially turning on the plurality of energizing circuits when the power of the host device is turned on, when the initial setting process is completed, or when the monitoring terminal device is restored. The energizing circuit operates with a first delay means operating after a predetermined time with the operation signal of the energizing circuit in the preceding stage, and a second switching means for connecting the power supply line of the block to the power supply while the first switching means is operating. The switching means and the third switching means for outputting an operation signal to the energizing circuit in the subsequent stage by the operation of the first switching means, the first switching means being a delay relay, and the second and There is provided a power supply device for disaster prevention equipment, wherein the third switching means is a make contact of the delay relay.

[Examples] Hereinafter, preferred examples of the present invention will be described.

FIG. 1 shows a plurality of fire detectors (monitoring terminal devices) as terminal devices connected to the receiver RE, which are directly connected to the receiver without a relay. . The fire detectors are, for example, three blocks B _{1 to} B ₃
However, in reality, a larger number of blocks may be connected.

In FIG. 1, SW ₁ is a power switch, which connects an AC power supply to a power supply circuit including a transformer, a rectifier circuit, and a constant voltage circuit. SW ₂ is a non-locking type recovery switch, N _{1 to} N
_3, each section relay for fire signal receiving in the block _{B 1 ~B 3, n 1 ~n} 3 is a fire signal receiving section relay N ₁ to N _3, respectively make contact for self-holding, DR ₁ ~DR ₃ is
The delay relays for powering on the blocks B _{1 to} B ₃ , respectively, dr _{11 to} dr ₃₂ are the make contacts of the delay relays DR _{1 to} DR ₃ , respectively, and here, the delay relays DR _{1 to} DR ₃ and The make contacts dr _{11 to} dr ₃₂ form a sequential energizing circuit of the terminal device. DE _{11 to} DE ₁ n, DE _{21 to} DE ₂ n and DE _{31 to} DE ₃ n are fire detectors as terminal devices for monitoring in blocks B _{1 to} B _3, respectively.

In the configuration shown in FIG. 1, when the power switch SW ₁ is closed when the power is turned on or the initialization is completed, the delay relay DR ₁ is first activated with a delay of a predetermined time, and its make contacts dr ₁₁ and dr ₁₂
Is closed. When the contact dr ₁₂ is closed, the constant voltage circuit CV
From the area relay N ₁ to the terminal devices in the block B ₁ , that is, the fire detectors DE _{11 to} DE ₁ n are supplied with electric power, and these terminal devices or fire detectors are first in the fire monitoring state. In this case, in a normal state where no abnormal state such as a fire has occurred, the resistance value of the terminal device, that is, the fire detector is very high, and therefore the district relay N ₁ is not activated.

Further, since the lagged relay DR ₂ delayed a predetermined time by make contact dr ₁₁ is closed is energized, then slow-motion relay DR ₂ of make contact dr ₂₁ and dr ₂₂ are closed, Closing the make contact dr ₂₂ from the constant voltage circuit CV to the regional relay N ₂
Through block B ₂ terminal equipment or fire detector DE
Power is supplied to _{21 to} DE ₂ n, and the fire monitoring status is entered. Thus, the sensor of block B ₂ will be powered slightly later than the sensor of block B ₁ . Similarly,
The closing of the make contact dr ₂₁ also causes the sensor of block B ₃ to be powered slightly later than the sensor of block B ₂ and thus the terminal equipment of all blocks, i.e. the fire detector, is gradually fed. By supplying power with a time difference, the power is sequentially supplied.

The operation during a fire abnormality in the fire monitoring state will be explained. For example, when an abnormality such as a fire is detected by any of the fire detectors in block B ₁ , the resistance value of the fire detector decreases and the constant voltage is reduced. A large current flows from the circuit through the district relay N ₁ and make contact dr ₁₂ . As a result, the district relay N ₁ is energized and self-held by its make contact n ₁ , and an alarm signal is output by another make contact (not shown) of this district relay N ₁ . When recovering from this alarm condition, the recovery switch SW ₂ is operated to release the self-holding of each district relay and return to the normal monitoring condition.

In the above description of FIG. 1, the operation of the receiver when the terminal device for monitoring such as the sensor is directly connected to the receiver has been described. However, the relay is connected to the receiver, In the case of a configuration in which a terminal device group such as a sensor divided into a plurality of blocks is connected to this repeater, the explanation of the receiver in FIG. 1 is given in the description of the operation of the repeater to which the terminal device group is connected. It will be easily understood by those skilled in the art that the description can be applied as it is.

Next, the operation between the receiver and the repeater when the repeater is connected to the receiver as a terminal device will be described with reference to FIGS. 2 to 5.

In FIG. 2, the receiver RE is a microcomputer.
CPU1 and read-only memory RO for program storage
M11, read only memory ROM12 that stores the address of the terminal device, type of terminal device, etc., random access memory RAM11 for work, connected terminal device, unconnected terminal device Random access memory RAM12 for storing non-responsive terminal devices, etc., display unit DP1, operation unit OP1, and a transceiver unit SR1 for transmitting and receiving signals between a plurality of terminal devices, that is, repeaters TR. And a constant voltage circuit CV1 for supplying power to a plurality of repeaters TR. In addition, the input side of the constant voltage circuit CV1 is passed through a switch SW and further through a rectifier circuit and a transformer (not shown),
It is connected to an AC power source.

Further, the terminal device, that is, the repeater TR, includes a microcomputer CPU2, a read-only memory ROM21 for storing a program, and a random access memory RAM for work.
Transmitter / receiver SR that sends and receives signals between 21 and receiver RE
2, a fire signal reception circuit FR that receives signals from multiple monitoring terminal devices FD such as a fire detector, and a constant voltage circuit CV
From 1 to the fire signal receiving circuit FR, and even the circuit F
An energizing circuit FC for opening and closing the power supply to the monitoring terminal device FD via R, and an R for controlling the opening and closing of the energizing circuit FC
-Includes S flip-flop FF and the like.

The operation of FIG. 2 will be described with reference to the flowcharts of FIGS.

In FIG. 3, when power is connected from the receiver RE to the monitoring terminal device FD via the relay TR, the receiver RE cyclically calls the relay TR and receives the response from the relay TR. The operation of the receiver in the case where the energization command signal is sent only to the repeater that the device determines to be normal, and the relay device supplies power to the monitoring terminal device by receiving the signal, It is shown.

Power on (block 100) and initial value setting (block 1)
After 01), by referring to the ROM 12, an address signal is sent to the first terminal device, that is, the relay TR, and at the same time, timing is started to check for no response (block 103). If the response signal is received from the first terminal device within the predetermined time (YES in block 104, that is, "yes"), the energization command code is added with the address code of the first terminal and transmitted. It is stored in the RAM 12 as a connection terminal (block 105). After that, when there is a response from the terminal device indicating that the energization command code has been received, the same sequence is performed for the next terminal number (NO in block 108).

If no response signal is received within the predetermined time in block 104 (NO in block 104, and block 1
06: YES), store no response from the terminal in RAM12 (block
107), the energization command code is not sent to the non-responsive terminal.

In this way, when the energization command code is sent to the appropriate terminal equipment up to the final address N, the terminal sequential energization processing is ended, and then the normal monitoring processing shown in blocks 109 to 116 is performed.

In the operation of the terminal sequential energization processing in the above blocks 102 to 108, the energization command is sent after the receiver calls each terminal device, and is designed to call each terminal device in order. Each terminal device that receives the energization command, that is, the relay device, does not shift the time to start energizing the sensor, that is, the monitoring terminal device, and a large inrush current does not flow at a time.
As a result, it does not require a large capacity.

In the normal monitoring process shown in the following blocks 109 to 116 after the terminal sequential energization process is completed, the status information request command is sent only to the connection terminal by referring to the RAM 12 (block 111). In this case, the address signal read from the ROM 12 is added to the status information request command and sent. Whether or not there is an abnormality such as a fire is determined based on the status information returned from the terminal device according to the status information request command (blocks 112 and 113).

Since the terminal device that has been determined to have an abnormality self-holds the abnormality alarm, when trying to cancel it, the operation unit OP
The recovery switch (not shown) provided in 1 must be operated. When the restoration switch is operated and an interrupt occurs (YES in block 115), the restoration processing shown in blocks 117 to 123 is performed next. In the restoration process, the address signal read from the ROM 12 is added to the restoration command and then transmitted (block 119). However, the restoration command is not transmitted to all the terminal devices, that is, the relays, Based on the contents of the ROM 12, the relay is connected only to the ON / OFF type sensor that is connected. The reason is that the on / off type sensor self-holds when an abnormality occurs and requires a recovery operation to release the self-holding, whereas analog
In the case of a sensor, the analog quantity signal is always sent as status information, and the receiver side compares the reference value with the analog quantity signal to determine the abnormality, so it does not hold itself. Is.

After sending the recovery command to all the self-holdable terminal devices, a timer is started in order to secure the time for which the recovery of the terminal devices is surely performed (block 121). After the timer turns off after a predetermined time has elapsed (YE in block 122)
S), the program returns to the beginning.

FIG. 4 is a flow chart for explaining the operation of the repeater shown in FIG. 2, and corresponds to the operation of the receiver shown in FIG. If a signal from the receiver is received (YES in block 202) and it is its address (YES in block 203), whether the received signal contains a command signal (block 204), it is included. If so, is it an energization command (block 205) or a restoration command (block 20)?
6) or a status information request (block 207).

If the received signal does not include a command signal (block 20
No 4), which is the sending of the address signal in block 103 of FIG. 3, so the reply signal is sent back from the repeater (block 208). When this response signal is returned, the third
The determination at block 104 in the figure is YES, and at block 105, the energization command is sent from the receiver. When the energization command is received, the repeater determines YES in block 205, and the flip-flop FF S in the repeater TR shown in FIG.
A high potential signal is input to the terminal through the interface I / F 22, and an ON signal is applied from the Q terminal to the energizing circuit FC, which causes the energizing circuit FC to the fire signal receiving circuit FR and the constant voltage circuit CV1.
(Block 209). At the same time, the energizing circuit FC sends a response signal to the interface I / F 22, and the response signal is sent to the receiver via the transmitting / receiving unit SR2. Only after receiving the response signal from this repeater, the block 103
It is possible to send the address signal in and the sending operation of the energization command in block 105.

The receiver side is performing normal monitoring processing and sends a status information request command to the repeater (block 11 in FIG. 3).
1) When it is received at the repeater side of the corresponding address (YES in block 207), the repeater reads the status information from the fire signal receiving circuit FR and sends it out (block 211). The status information is received at the receiver (block 112) and it is possible to determine from the received status information whether an abnormality such as a fire has occurred (block 113).

If the repeater in question is an on / off type sensor connected, and if the status information sent in block 211 indicates an abnormal condition, this repeater, especially the fire signal The receiving circuit FR needs a recovery operation. When the configuration of the fire signal receiving circuit FR of the repeater is the same as the circuit in the receiver shown in FIG. 1, this restoration operation is performed by temporarily cutting off the power supply to the circuit FR. Done. On the receiver side, after receiving the abnormal signal from the terminal device, the restoration switch described in block 115 is turned on to start the restoration process, and the restoration command is sent from the receiver (block 119). When the restoration command is received at the repeater side (block 206), a high potential signal is input to the R terminal of the flip-flop FF and the output of the Q terminal becomes low potential, which turns off the conduction circuit FC. hand,
The power to the fire signal reception circuit FR is temporarily cut off (block 210). As a result, the self-holding of the circuit FR is released and the normal monitoring state is restored.

It should be noted that the sequence of blocks 206 and 210 is omitted if the repeater has an analog sensor connected, since it is not self-held and therefore unnecessary and unnecessary.

In the above embodiment, sequence 1: when the receiver sends an address signal, sequence 2: the repeater returns a response signal in response to the address signal, and sequence 3: when there is a reply signal from the repeater The receiver sends the energization command to, and the sequence 4: the repeater returns the second response signal indicating that the repeater has received the energization command, whereby the receiver receives the second response signal from the repeater. After that, the sequence of 1) to 4) described above was performed on the next terminal device, and the current was sequentially supplied in this manner, but this sequence can be modified to some extent.

For example: A) The above sequence 4 can be omitted.

B) Also, the response signal is sent back by the block 208 of FIG. 4 and the above-mentioned sequences 2 and 4,
It is also possible to return status information instead of this response signal. In this case, block 104 in FIG.
“Are there response signals?” Is changed to “Status information received?”.

C) Further, in block 208, it is possible not to send back a response signal or status information. In this case, the block 104 in FIG. 3 is omitted.

D) Also, as shown in FIG. 5, each time the receiver calls the repeater, the energizing circuit may be turned on in the repeater (block 304 in FIG. 5). In this case, each repeater receives an energization command in the first polling operation following the initial setting on the receiver side. Therefore, since it is not necessary for the receiver side to send the energization command, the block 105 in FIG. 3 is omitted.

E) Further, if the status information is sent instead of "Send response signal" in block 306 of FIG.
The terminal sequential energization process in blocks 102 to 108 in the figure can be omitted, and it is possible to directly shift from the block 101 in FIG. 3 to the block 109 in the normal monitoring process.

[Effects of the Invention] As described above, according to the present invention, when power is supplied to the terminal device from the power supply on the receiver side, the power is sequentially supplied, so that the inrush current can be reduced and the reception can be performed. This has the effect of reducing the load on the machine power supply.
Further, according to the present invention, since the inrush current is reduced, the receiver also has the effect that it becomes unnecessary to take measures against the inrush current. Furthermore, if the receiver side sends an address signal to the terminal device, waits for a response signal from the terminal device to the address signal, and then sequentially sends energizing commands to the terminal device, the receiver is defective. It is possible to prevent the terminal device that has been determined to be unnecessary or to be unnecessary from being energized, which has the effect of reducing the load.

[Brief description of drawings]

FIG. 1 is a circuit diagram showing a power feeding device for disaster prevention equipment according to an embodiment of the present invention in the case where a host device directly feeds power to a monitoring terminal device, and FIG. 2 is a receiver as a repeater. FIG. 3 to FIG. 5 are block circuit diagrams showing a power supply device of a disaster prevention facility according to an embodiment of the present invention when power is supplied to a monitoring terminal device via a flow chart, for explaining the operation of the present invention. is there. In the figure, RE is the receiver and SW ₁
Is a power switch, SW ₂ is a recovery switch, N _{1 to} N ₃ are district relays for receiving fire signals, DR _{1 to} DR ₃ are slow relays, dr ₁₁ to
dr ₃₂ is a make contact, CV is a constant voltage circuit, CPU1 and CPU2 are microcomputers, ROM11, ROM12 and ROM21 are read-only memories, RAM11, RAM12 and RAM21 are random access memories, and SR1 and SR2 are transmitting and receiving. Department, DP1
Is a display unit, OP1 is an operation unit, CV1 is a constant voltage circuit, FF is a flip-flop, FC is an energizing circuit, FR is a fire signal receiving circuit,
FD is a terminal device for monitoring.

Claims (2)

[Claims] 1. A receiver, a repeater as a plurality of terminal devices connected to the receiver, a fire detector and a gas as a plurality of monitoring terminal devices connected to each of the plurality of terminal devices. In a disaster prevention facility comprising a leakage sensor or a monitoring sensor such as an anti-theft sensor, in which power is supplied from the receiver to the monitoring terminal device through each of the terminal devices, the receiver is When the power is turned on or when the initial setting process is completed or when the monitoring terminal device is restored, the terminal device includes an instruction sending unit that sequentially sends an energization command signal to the plurality of terminal devices, and each of the terminal devices includes the energization command. An instruction determining means for determining whether a signal is received, and an energizing circuit for supplying power supplied from the receiver to the monitoring terminal device when the instruction determining means determines that the energizing instruction signal is received. The power supply device of disaster prevention equipment, which comprises. 2. An upper device and a plurality of monitoring terminal devices connected to the upper device, wherein the upper device is a receiver or a repeater connected to the receiver, and the monitoring terminal device. Is a monitoring sensor such as a fire sensor, a gas leak sensor, or an anti-theft sensor, and in the disaster prevention facility in which power is supplied to the monitoring terminal device from the host device, the plurality of monitoring terminal devices Is divided into a plurality of blocks, and each of the monitoring terminal devices of these blocks is connected to the higher-level device via a line provided for each block, and the upper-level device is supplied with power from a corresponding line. And a sequential energizing means for sequentially turning on the plurality of energizing circuits when the host device is turned on or when the initialization process is completed or when the monitoring terminal device is restored. Is a first switching means that operates with a delay of a predetermined time according to the operation signal of the preceding energizing circuit, and a second switching means that connects the power supply line of the corresponding block to the power supply while the first switching means is operating. And a third switching means for outputting an operation signal to the energizing circuit in the subsequent stage by the operation of the first switching means, wherein the first switching means is a delay relay,
The power supply device for disaster prevention equipment is characterized in that the second and third switching means are make contacts of the delay relay.