JPH0458239B2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field] The present invention relates to a remote control system for remotely controlling a load by connecting a central control device and a terminal device with a pair of signal lines, and time-division multiplexing transmission of control data, monitoring data, etc. It relates to a supervisory control system.

[Background technology] Conventionally, this type of remote monitoring and control system
As shown in FIG.
are connected with a pair of signal lines 4, and each terminal device 2, 3
The central control device 1 sends out a transmission signal Vs that transmits address data for accessing, control data for controlling the load, and return standby signal for setting the return period for monitoring data from the terminals 2 and 3. and the terminals 2 and 3 (for example, 4
There is a system in which control data for loads L ₁ to L ₁ or monitoring data for switches S ₁ to _{S 4} are time-division multiplexed. In addition, when an operation confirmation signal is returned from the control terminal device 3, an operation monitoring circuit is provided on the control terminal device 3 side corresponding to each load _L1 to _L4 , and the operation status is returned as monitoring data. All you have to do is do it. By the way, in such a conventional example, when the terminals 2 and 3 are used to monitor and control distributed switches or loads, the number of circuits that can be monitored and controlled is significantly reduced. There was a problem. In other words, the number of unique addresses assigned to each terminal device 2, 3 is a finite value unique to the system. For example, in a case where 2N addresses can be set, each terminal device 2, 3 has 4 monitoring circuits, When a control circuit is connected, the number of circuits that can be monitored and controlled is 4 x N (maximum number of monitoring and control circuits), but terminals 2 and 3 each have one monitor and control circuit. When only circuits are connected, there is a problem in that the number of circuits that can be monitored and controlled is N, which is significantly reduced. Therefore, in order to solve this problem, the same address can be assigned to multiple terminal devices 2 and 3 provided corresponding to distributed switches or loads, thereby increasing the number of circuits that can be monitored and controlled. However, there was a problem in that the monitoring data sent back to the central control unit 1 from the terminals 2 and 3 having the same address collided, resulting in transmission errors and incorrect monitoring control. That is, in the conventional example described above, as shown in FIG. 29a, the return period T _B set by the return standby signal of the transmission signal Vs
Periods Rp, Rs, and _R0 to _R7 are provided during which bit data indicating the operating status of the switches _S1 to _S4 or bit data indicating the operating status of the loads _L1 to _L4 is returned. Note that Rp is a parity bit transmission period, Rs is a status bit transmission period, and the parity bit and status bit are transmitted as necessary. Furthermore, R ₀ to _{R 3} are the transmission periods of the switch monitoring bits, and R ₄ to _{R 7} are the transmission periods of the load monitoring bits. A return signal _VB with bit data "0" is transmitted.

However, if the same address is assigned to multiple terminals 2 and 3, bit data will be transmitted from multiple terminals 2 and 3 at almost the same time during each period, so transmission errors due to interference may occur. There was a problem that normal monitoring and control operations could not be performed. For example, as shown in FIG. 30, when the same bit data is returned from two terminal devices 3 placed apart, the phase of the returned pulse signal may change due to the difference Δl between the transmission distances l ₁ and l ₂ . Slightly (Δt)
As Δl becomes larger, a transmission error may occur.On the other hand, as shown in Fig. 31,
When different bit data are transmitted from the two terminal devices 3a and 3b, a problem arises in that transmission errors occur due to interference and malfunctions occur.

[Object of the Invention] The present invention has been made in view of the above points, and its purpose is to improve the number of circuits that can be monitored and controlled even when switches or loads are distributed. It is an object of the present invention to provide a remote monitoring and control system which can perform monitoring and control without reducing the number of terminals and which can prevent transmission errors from occurring due to the same address of terminal devices.

[Disclosure of the Invention] (Configuration) The present invention connects a central control device and a large number of terminal devices having unique addresses by a pair of signal lines,
The central control unit sends a transmission signal that transmits address data for accessing each terminal, control data for controlling the load, and a return standby signal for setting the return period for monitoring data from the terminal, and connects the central control unit and each terminal. In a remote monitoring and control system that performs time-division multiplex transmission of data corresponding to multiple monitoring and control circuits to and from a device, the same address is assigned to multiple terminal devices that monitor and control one switch or load. At the same time, a circuit number setting section is provided for setting which monitoring and control circuit of the terminal device the switch or load is connected to, and the return period set by the return standby signal is divided into a plurality of parts and assigned to each circuit, By returning monitoring data from each terminal device with the same address in each divided return period, the number of circuits that can be monitored and controlled can be reduced even when switches or loads are distributed. The purpose of the present invention is to provide a remote monitoring and control system that can perform monitoring and control without any problems, and can prevent transmission errors caused by the same address of terminal devices.

Embodiment 1 FIG. 1 is a diagram showing a schematic configuration example of a remote monitoring and control system according to the present invention.
A plurality of monitoring terminal devices 2 and control terminal devices 3 each having a unique address are connected to each other by a pair of signal lines 4, and a signal line 4 is connected from the central control device 1 to
The transmission signal Vs sent out is a start pulse signal indicating the start of signal transmission, as shown in Figure 2a
ST, mode data signal MD indicating signal mode,
Address data signal to call terminals 2 and 3
AD, control data signal CD to control loads L ₁ ~ _{L 4} ,
Checksum data signal CS and terminals 2 and 3
This is a bipolar (±24V) time-division multiplexed signal consisting of a return standby signal WT that sets the return period from the WT, and data is transmitted by pulse width modulation. When the address data of the transmission signal Vs received via the signal line 4 matches its own unique address data, each terminal device 2 and 3 takes in the transmission signal Vs as control data and returns the transmission signal Vs. The monitoring data signal is sent back as a current mode signal (a signal sent by short-circuiting the signal lines 4 via an appropriate low impedance) in synchronization with the standby signal WT. In addition, the central control device 1 includes a dummy signal transmitting means that always sends out a dummy transmission signal Vs in which the mode data signal MD is in a dummy mode, and a dummy signal transmitting means that sends back a dummy transmission signal Vs from one of the monitoring terminals 2 as shown in FIG. 2b. An interrupt processing means is provided which detects the interrupt generating terminal 2 when such an interrupt signal Vi is received, accesses the terminal 2, and causes the monitored data to be sent back. On the other hand, the monitoring terminal 2 has switches S ₁ to
When a monitoring input is received by operating _S4 , the start pulse signal ST of the dummy transmission signal Vs
Generates an interrupt signal Vi in synchronization with
Interrupt generation means for returning its own unique address data in synchronization with the return standby signal WT of the address confirmation mode transmission signal Vs from the central control device 1, and an interrupt access mode transmission signal in response to the interrupt from the central control device 1. Data return means is provided for returning monitoring data corresponding to the monitoring input when Vs is transmitted. In addition, the central control device 1 creates control data to be transmitted to the control terminal 3 based on the monitoring data sent back to the central control device 1 from the monitoring terminal 2, and
The information is transmitted to the control terminal 3 to control the loads L ₁ to _{L 4} . The control terminal 3 installed in the distribution board 6 or relay control panel 6a has the dimensions agreed upon by the distribution board, and its control output is used to control the load control remote control relay (hand switch). A latching relay (5) that can be turned on and off even when

FIG. 3 shows the circuit configuration of the control terminal device 3. The control terminal device 3 includes a power supply circuit 10 that forms a circuit power supply from the transmission signal Vs transmitted via the signal line 4, and a transmission signal Vs. A signal processing circuit 11 receives and performs signal processing, and also forms and transmits a return signal _VB , and an address setting section 12 that sets a unique address, and when controlling one load, controls four circuits. A circuit number setting unit 13 that sets which circuit to control the load from among the circuits (corresponding to 4 control data bits), a drive circuit 14 that drives the relay circuit 15 for load control, and an operating state. The signal processing circuit 11 detects a match between the address data of the transmission signal Vs and the unique address, takes in the control data when the address match is detected, and sends it to the circuit number setting section 13. A control output is formed based on the bit selected by the output relay 15.
At the same time, based on the load monitoring input inputted through the monitoring circuit 16, return monitoring data is formed and sent back to the central control unit 1 using a current mode return signal _VB .

4 and 5 show the monitoring terminal 2, whose circuit configuration is approximately the same as that of the control terminal 3, and the monitoring circuit 16 switches S ₁
The state of the switch is monitored, and based on this switch monitoring input, monitoring data is formed in the signal processing circuit 11 and sent back to the central control unit 1 through the above-mentioned interrupt processing, and the operation display circuit 15' Light-emitting diodes LD ₁ and LD ₂ for ON and OFF indications
is made to blink based on control data (indicating the operating state of the load) transmitted from the central control device 1. Furthermore, when setting a unique address using the deep switch in the address setting section 12, the lower 6 bits of the 8-bit address data can be set by the user as appropriate, and the upper 2 bits can be set by the manufacturer for the terminal device type (for monitoring). , control) settings, and both terminals 2 and 3 can be easily matched by simply setting the user setting section of the unique address of the monitoring and control terminals 2 and 3 to the same value.
The load L ₁ connected to the control terminal 3 can be controlled based on the monitoring data of the switch S ₁ returned from the monitoring terminal 2 set to the same value. Note that if the monitoring terminal device 2 is configured to monitor the switch states of a plurality of switches S ₁ , S ₂ . Switch S ₁ , S ₂
All you have to do is input the switch status. Further, the monitoring terminal device 2 for monitoring the switch status of the pattern control switch has the same configuration as the above-mentioned individual control switch. However, a pattern number for setting pattern control data is set in the circuit number setting section 13.

Hereinafter, a case will be described in which a plurality of distributed loads are controlled by a plurality of control terminals 3, each of which is assigned the same address.
Currently, the same address is assigned to multiple terminals 3, and the circuit number setting section 13 sets which control circuit of the terminals 3 the load is connected to, and the return standby signal WT The set return period T _B is divided into multiple parts and assigned to each circuit, and the monitoring data from each terminal device 3 having the same address is returned during each divided return period T ₁ to T ₄ . . FIG _. 6 shows an example of dividing the return period T _B. As shown in FIG. 0,1))
divided so that R ₀ , R ₁ , R ₂ , R ₃ , R ₄ ,
R ₅ , R ₆ , and R ₇ are set to four divided return periods T ₁ to T ₄ corresponding to the control circuits, and during these divided return periods T ₁ to T ₄ , pulses are generated using monitoring data. A width-modulated return signal V _B is sent back. Figure 6b shows an example of return of monitoring data from the terminal device 3 to which the No. 1 control circuit is set, and bit data is returned only during the divided return period T1 corresponding to No. ₁ . It's becoming like that.

FIG. 6c shows the return signal V _{B1 ~} sent back from each terminal 3 when the same address is assigned to four control terminals 3 and loads are connected to different control circuits of each terminal 3. An example of the return signal V _{B '} (signal on signal line 4) which is a combination of V B4 is shown, and the return signals V _B1 to V _B4 from each terminal device 3 are returned in divided return periods T ₁ to T ₄ , respectively. This ensures that no interference occurs. Therefore,
Even when the same address is assigned to a plurality of terminal devices 3, transmission errors due to interference do not occur as in the conventional example, and malfunctions do not occur. Similarly, the same address is set for a plurality of monitoring terminals 2 that monitor one switch, and the switch monitoring data is divided and sent back during the period T ₁ ~
Needless to say, you can send it back to _T4 .

FIG. 7 shows a circuit configuration for preventing runaway of the CPU 1a forming the arithmetic processing section of the central control unit 1. The CPU 1a performs time division multiplex transmission based on the clock generated by the clock circuit CL. Each time the transmission signal Vs is sent out, a reset pulse for the count CO is output to the R terminal, and a time clock obtained by frequency-dividing the clock is output to the φ terminal. The count-up output of a counter CO which counts this time clock and is reset by a reset pulse is applied to an INT terminal (an input terminal for an initial signal (active low) for initializing the operating program) via a transistor Q. Here, the period of the reset pulse when time division multiplex transmission is performed normally is set shorter than the time from when the counter CO is reset until the count-up output is obtained, and during normal operation, No initial signal is output. On the other hand, if the CPU 1a goes out of control for some reason, the reset pulse will no longer be output, so the counter CO
When the count up is applied, a count up signal is applied to the IN" terminal as an initial signal,
The operating program of the CPU 1a is initialized, and normal operation is automatically restored.

Next, a wireless system using optical communication will be explained. FIG. 8 shows a schematic configuration diagram of the entire wireless system, and the wireless transmitter 19 that transmits the optical wireless signal can be of a wall-hung type that is hung on the wall or a desk-mounted type that is placed on the desk. A plurality of wireless receivers 24 that receive optical transmission codes from the wireless transmitter 19 are installed on the ceiling 60. A unique address is set for each wireless transmitter 19, and from the perspective of the central control device 1, it is equivalent to the monitoring terminal 2, and for example, the transmission code for controlling on/off of lighting equipment is the first one.
It is transmitted as an optical wireless signal as shown in Figure 0a. This optical wireless signal transmission code is
As shown in FIG. 11, it consists of address data AD and control data CD. Here, the mode data SI preceding the address data AD is data for selecting whether to perform another system operation such as a remote control device for time division multiplex transmission or an individual operation in the wireless system.
FIG. 13 shows a specific example of the circuit of the wireless transmitter 19, which includes an address setting section 35 for setting an address, a signal processing section 36 for creating a transmission code, a light emitting diode for transmitting the transmission code as an optical wireless signal, etc. It is composed of an issuing section 37 and the like.

On the other hand, the wireless receiver 24 that receives the optical wireless signal includes, as shown in FIG. A tuning circuit 21 having a tuning function for detecting the carrier wave of the output signal from the optical receiver 20, and a baseband conversion section 22 that converts the output of the tuning circuit 21 into a baseband signal as shown in FIG. 10b. It is configured. Here, the baseband signal from the wireless receiver 24 is sent out on a dedicated signal line 23 and transmitted to the wireless relay terminal 7 and a plurality of individual receivers 28 connected to this signal line 23. Wireless relay terminal 7 constituting the wireless interface section
is for receiving baseband signals from the wireless receiver 24 all at once, as shown in FIG.
The receiving section 25 receives the baseband signal, the setting section 27 selects whether the system operates individually as described above, and the receiving section 25 receives the baseband signal.
It is comprised of a system interface 26, etc., into which address data and control data converted into parallel signals are input. This system interface 26 is connected to the signal line 4 of the multiplex transmission control system, and is processed according to the procedure on the central control device 1 side. Extracts only the signal format set by the receiving section 25 of the wireless relay terminal 7 from the baseband signal, and converts it to the setting section 27.
It is determined whether the operation is a system operation or an individual operation, and the received address data and control data are output from the receiving section 25 to the system interface 26.

Further, the individual receiver 28 is the wireless receiver 2
a receiving unit that receives the baseband signal from 4;
It consists of an address setting section for setting a unique address for each receiver, and a load interface that drives load control relays etc. using control data. It compares the baseband signal with the setting address of each individual receiver, and If it is, the load control relay or the like is driven by the load interface to control the load L' such as the above-mentioned lighting equipment.

Thus, the optical wireless signal transmitted from the wireless transmitter 19 is received by the nearest wireless receiver 24, the tuning circuit 21 detects only the signal of the determined frequency, and the baseband converter 22 converts the baseband signal into a baseband signal. and transmitted to the wireless relay terminal 7 and the individual receiver 28 via the signal line 23. Transmission code mode data
If the SI selects individual operation, the wireless relay terminal 7 does not respond and the individual receiver 28 becomes the target. The address of the baseband signal is checked in each individual receiver 28, and if it matches the set address, the load is controlled based on the control data. Here, if the mode data SI of the optical wireless signal from the wireless transmitter 19 selects system operation, the wireless relay terminal 7 will respond. That is, the address and control data obtained by converting the baseband signal into a binary parallel signal are input to the system interface 26, and data return processing is performed according to a predetermined procedure on the central control unit 1 side.

Here, the configuration of the wireless receiver 24 is as follows:
4 to 19, it includes a receiver base 41 to which the signal line 23 is wired and is attached to the ceiling 60, an optical sensor 20a consisting of three photodiodes, and a signal processing circuit (optical receiver). Part 2
0, a tuning circuit 21, and a baseband converter 22), and a detection head 42 that is fitted and attached to a receiver base 41. By inserting a pair of hook blades 43 into a pair of blade insertion holes 44 formed on the lower surface of the receiver base 41 and horizontally rotating the detection head 42, the hook blades 43 are inserted into the receiver base 41.
It is adapted to be engaged and connected to a hook connection terminal 45 inside. In this embodiment, a guide protrusion 46 is provided at the center of the upper surface of the detection head 42, and an insertion hole 47 into which the guide protrusion 46 is inserted is provided at the center of the lower surface of the receiver base 41. A hook blade 43 is protruded around the insertion hole 47, and a blade insertion hole 44 into which the hook blade 42 is inserted is provided around the insertion hole 47. The linear marker 48 provided on the detection head 42 corresponds to the markers 49a and 49b on the receiver base 41, so that the detection head 42 can be easily attached to the receiver base 41. By aligning the marker 48 with the marker 49a, the hook blade 43 faces the blade insertion hole 44, and the marker 48
By matching the marker 49a with the marker 49a, the hook blade 43 is reliably engaged and connected to the hook engagement terminal 45. In addition, in the embodiment, the shapes of the double-blade insertion holes 44 are different, and the hook blade 43 is
A triangular portion is provided at one end of the connector to facilitate connection polarity. In addition, in the embodiment, the plug blade insertion hole 44 and the guide insertion hole 4 are
7 are integrated.

Further, the printed circuit board 50 on which the main circuit of the signal processing circuit is mounted is provided with an opening 50a in the center, and a circuit that is susceptible to noise, that is, a light sensor 20a, is provided with an opening 50a in the center.
The circuit of the optical receiving section 20 having a preamplifier section that amplifies the weak signal output from the shield case body 52 is mounted on a second printed circuit board 51, and the protruding hole 52a of the optical sensor 20a is bored.
It is housed in a shield case 54 formed by a cover 53 having a lead wire insertion hole 53a, and is arranged in the central opening 50a. In the embodiment, the optical sensor 20a is mounted on the second printed circuit board 51 via the third printed circuit board 51'.

FIG. 20 shows another mounting example, in which an auxiliary printed circuit board 54 is provided in order to mount the tuned coil 21a constituting the tuned circuit 21 on a printed circuit board 50, with the height of the coil 21a When the width dimension is small compared to the dimension, the thickness of the signal processing section formed by mounting components on the printed circuit board 50 can be made thinner than when the coil 21a is installed upright, and the thickness of the detection head 42 can be reduced. It is becoming possible to make the device thinner.

Embodiment 2 FIG. 21 shows the configuration of an external interface terminal device 8 according to the present invention that performs data transmission with an external control device. A transmission signal transmitting/receiving section 80 that transmits and receives multiplexed transmission signals, and an insulating section 8 consisting of a photocoupler that transmits signals in an electrically insulated state.
1a, 81b, a central control unit 82 that performs signal processing and judgment, a data storage unit 83 that stores the operating status of the remote monitoring and control system, I/O units 84a to 84c that control data input/output, and data It is formed of input/output sections 85a to 85c, and each circuit other than the transmission signal transmitting/receiving section 80 is connected to a terminal power source 8.
Power is supplied from 6. Further, in the embodiment, data is input/output in bit serial through the data input/output section 85a, and data is input/output in bit parallel through the data input/output section 85b. 85c is for handling other data input/output.

The operation of the external interface terminal device 8 will be explained below. Now, by connecting the computer main body 88 of the external control device 87 and the data input/output section 85b of the external interface terminal 8 via the interface 88, the connection between the external control device 87 and the external interface terminal 8 is established. Data is exchanged between them. Here, in the external interface terminal section 8, the transmission signal Vs transmitted via the signal line 4 is received by the transmission signal transmitting/receiving section 80, and the central control section 82 receives the transmission signal Vs transmitted via the signal line 4. The data is constantly monitored to determine the operating state of the load, pattern control state, etc., and the state data is stored in the data storage section 83. Next, when the external control device 87 sends a status confirmation command to confirm the operating status of the remote monitoring and control system, the external interface terminal 8
The central control unit 82 decodes the command and sends the status data stored in the data storage unit 83 back to the external control device 87. on the other hand,
When a status control command to control the status of the remote monitoring and control system is sent from the external control device 87, the central control unit 82 of the external interface terminal 8 decodes this command and uses it to control the status of the remote monitoring and control system. It performs the same operation as the terminal device 2, and causes the transmission signal transmitting/receiving section 80 to send out a return signal to the signal line 4 to return the same monitoring data as when the individual operation switch or pattern control switch is pressed. That is, the external interface terminal 8 has a unique address set by the control command, and monitoring data of the switch state is set, so that it operates like the monitoring terminal 2. In response to the pseudo switch operation performed on the external control device 87 side, the same load control operation as when the monitored switch in the remote monitoring and control system is pressed is performed. Therefore, the external interface terminal 8 can be used to operate the remote monitoring and control system in conjunction with the external control device 87, and to perform local control operations, timer operations, pattern operations, etc. using the external control device 87 as a host control system. This allows the control operation to be upgraded as desired.

FIG. 22 shows a block circuit diagram of a pattern setting terminal 9 which is equipped with a data input section 95 for inputting pattern control data and returns the input pattern control data to the central control unit 1. A transmission signal transmitting/receiving section 90 that transmits and receives time division multiplexed transmission signals transmitted through the transmitter, insulating sections 91a and 91b made of photocouplers that transmit signals in an electrically insulated state, and a central control section 22 that performs signal processing. , a data storage unit 93 that stores input data or confirmation pattern control data sent from the central controller 1, and I/O units 94a to 94c that control data input/output. The data set by the switch section 97 of the data input section 95 is taken in via the /O section 94a, and the set data is transferred to the display control section 9.
It is set to be sent to the 8th. Further, the data stored in the data storage section 93 is stored in the I/O section 94.
In the embodiment, the output data can be printed out by a data output section 9 consisting of a printer. Note that each circuit other than the transmission signal transmitting/receiving section 90 of the pattern setting terminal 9 is supplied with power from a terminal power source 96.

FIG. 23 shows a front view of the switch panel section of the data input section 95, in which load selection switches SWa, SWa', SWb, SWb', SW ₁ a~
SW ₁ d...SW ₁₆ a to SW ₁₆ d, block changeover switch SW ₂₀ that changes the selected block, and data set switch that memorizes the selected data.
SW ₂₁ , a data return switch SW ₂₂ for returning stored data to the central controller 1 , and a data transfer switch SW ₂₃ for transmitting pattern control data from the central controller 1 to the pattern setting terminal 9
It is formed by. In the figure, number setting switch
SWc and SWc' are push button switches for inputting pattern numbers or group numbers by UP or DOWN, and mode changeover switch _SW24 is a slide switch for changing over initial setting mode, confirmation mode, change mode, and normal mode. clear switch
SW ₂₅ is the input data (load number displayed on the display section DP ₁ to Dp ₁₆ (in the example shown, the channel
Push button switch, switch to clear No.))
SW ₂₆ , SW ₂₇ , and SW ₂₈ are a total pattern switch, a floor pattern switch, and a sleep switch that set the type of pattern control data. Furthermore, the all-on switch SW ₃₀ , the all-off switch SW ₃₁ , and the all-outside switch SW ₃₂ are push-button switches that allow specific data input at the time of setting the total pattern with a single touch. In addition, each of the display parts DP ₁ to DP ₁₆ has 4
Load numbers (channel numbers) of the control terminal 3 divided into blocks: 0 to 15 ch, 16 to 31 ch, 32
~47ch, 48~63ch are now displayed.

The operation of the pattern setting terminal 9 will be explained below. Now, when setting pattern control data from the data input section 95, set the mode changeover switch SW ₂₄ to the initial setting mode, and then
Input the type of pattern control using SW ₂₆ to SW ₂₈ . Next, set the pattern number corresponding to the pattern switch with the number setting switch SWc.SWc', select the block with the block changeover switch _SW20 , and switch SWa, SWa',
SWb and SWb' are used to set the terminal number (channel number) of the control terminal unit 3, and switches SW ₁ a to SW ₁ d...SW ₁₆ a to SW ₁₆ d are used to set the terminal number (channel number) of each control terminal unit 3. The pattern control data is stored in the data storage section 23 by setting the load circuit number to be turned on and pressing the set switch SW ₂₁ . Pattern control data is input by repeatedly performing the above-described setting operation. by the way,
When selecting the load to be turned on as described above, the number of the control terminal 3 of the block selected by the block changeover switch _SW20 is displayed on the display units _GP1 to _GP16 . That is, when the first block is selected by operating the block changeover switch SW ₂₀ , the issuing diodes corresponding to the terminal device numbers 0 to 15 light up and the terminal device number 0 is selected.
~15 load circuits (4 circuits) switch SW ₁ a~
SW ₁ d...Selectable items are displayed using SW ₁₆ a to SW ₁₆ d, and when block selection switch SW ₂₀ is pressed to switch to the second block,
The light emitting diodes corresponding to terminal numbers 16 to 31 light up to indicate that the load circuit of the control terminal has been selected, and switches SW ₁ a to SW ₁ d...
...Selectable items are displayed using SW ₁₆ a to SW ₁₆ d. The same applies to the case where the block changeover switch SW ₂₀ is pressed to switch to the third and fourth blocks.

The pattern control data set as described above is sent back to the central controller 1 via the transmission signal transmitting/receiving section 90 and the signal line 4 by pressing the data transfer switch SW ₂₂ . The pattern control data is stored in a memory for storing pattern control data.

On the other hand, when confirming or changing the set pattern control data, first press the data transfer switch SW ₂₃ to transmit the control data stored in the memory in the central controller 1. A transmission request signal is sent from the pattern setting terminal 7, the data transmitted from the central control device 1 is received by the transmission signal transmitting/receiving section 90, and the transmitted pattern control data is stored in the data storage section 93. Next, the pattern control data can be confirmed by outputting the data stored in the data storage section 93 to a printer. Furthermore, the pattern control data can be changed by operating the switch section 97 in the same way as in the case of initial setting, and the changed pattern control data can be transferred to the central controller 1 by pressing the data transfer switch SW ₂₂ . If the data is returned, the pattern control data stored in the memory in the central control device 1 is rewritten, and thereafter, the loads are subjected to batch pattern control based on the changed pattern control data. It goes without saying that a switch may be provided to print out the pattern control data stored in the data storage section 93 by initial setting or modification.

As described above, in the embodiment, the pattern control data can be easily set and changed by operating the switch of the data setting section 95 of the pattern setting terminal 9, and the pattern control data can be centrally stored. Since it is stored in the memory in the control device 1, it is possible to push on or push off multiple loads at once using a pattern control switch, and set the multiple loads to be turned on or off at once using each switch. The setting operation is simpler than that required in the conventional example, and the number of setting switches in the data setting means can be significantly reduced.

By the way, when the pattern control data is stored in the memory in the central controller 1 as described above and multiple pattern controls are performed using push-on and push-off switches, the data common to multiple types of pattern control is There has been a problem in that when there are loads that are common, erroneous control may be performed in which the common loads are not turned on.
For example, as shown in Figure 24, the lighting in a gymnasium
In the case where L ₁₁ to _{L 35} are pattern-controlled by two types of illumination patterns P ₁ and P ₂ , the illumination patterns P ₁ ,
The lights L ₁₃ , L ₂₃ , and L ₃₃ in the parts common to P ₂ need to be lit together when controlled by both lighting patterns, but from the entire lighting state where lighting is performed using both lighting patterns P ₁ and P ₂ . , when transitioning to partial illumination using one illumination pattern P ₁ (or P ₂ ),
There is a problem that lights in common areas are turned off. That is, when the pattern control switch of the other illumination pattern P ₂ (or P ₁ ) is turned off, one illumination pattern P ₂ (or
Illumination L ₁₃ of the common part to be lit in P ₁ ),
There is a problem in that L ₂₃ and L ₃₃ are turned off and desired partial illumination is not performed. In the embodiment, in order to eliminate such inconvenience, when one of the illumination patterns P ₁ and P ₂ is turned off, it is determined whether or not the other illumination pattern P ₂ and P ₁ is being illuminated. The central control unit 1 is provided with an erroneous control prevention means that prevents the lights L ₁₃ , L ₂₃ , and L ₃₃ in the common parts from turning off if the lights are checked and the lights are on.

FIG. 25 is a flowchart showing the above-mentioned erroneous control prevention operation. When an operation of the pattern control switch is detected, it is determined whether the operation is an on operation or an off operation, and if it is an on operation, it is determined whether the operation is an on operation or an off operation. In the case of an off operation, a normal on operation routine is entered, and an off operation routine is entered to prevent the following malfunctions and turn off the illumination. That is, in the off operation routine, first, the address of the pattern control switch that has been turned off (the address of the monitoring terminal 2) is determined, and based on the address, predetermined data is read from the memory in which the pattern control data is stored. . Next, in order to normally control the lights L ₁₃ , L ₂₃ , and L ₃₃ in the common area, it is determined whether or not other pattern control switches have been turned on, and if control using other lighting patterns is being performed. If not, the illumination is controlled to be turned off all at once using the pattern control data read from the memory.On the other hand, if control is being performed by another illumination pattern, the logical product of the pattern control data of both illumination patterns is performed. Illumination of the common area obtained by (AND)
Perform operations so that L ₁₃ , L ₂₃ , and L ₃₃ do not turn off.
Therefore, when one lighting pattern is turned off, it is possible to prevent an erroneous operation in which the lights L ₁₃ , L ₂₃ , and L ₃₃ in the common area that are turned on by other lighting patterns are turned off. will be done.

Figures 26 to 27 show another data setting means in which the individual control switches S ₁ to _{S 4} monitored by the monitoring terminal 2 are arranged centrally (lighting control switches for each floor are arranged in rows). ) A monitoring terminal 2' of a pattern control switch with a data setting function is arranged in parallel on the switch panel section provided with a pattern setting terminal 9'. , a normal/setting switch SW ₃₀ , and an initial/change switch SW ₃₁ .
In the illustrated example, each monitoring terminal 2' monitors three pattern control switches, but it is also possible to monitor the status of one or two pattern control switches. good.

Now, if you press the normal/setting switch SW ₃₀ to enter the setting mode, the individual control switches S ₁ to _{S 4}
It is now possible to set pattern control data using . When performing initial settings here, by switching the initial/change switch SW ₃₁ to the initial setting mode side, all pattern control data set in advance will be cleared.
Data entry for initial settings is now easy. In addition, when set to change mode, the preset pattern control data
Since the information is displayed on the operation display section of the monitoring terminal 2, the data can be easily changed. Therefore, it is now possible to easily initialize or change the pattern control data as the layout changes.

[Effects of the Invention] As described above, the present invention connects a central control unit and a large number of terminal devices having unique addresses through a pair of signal lines, and controls the address data and load accessed by each terminal device. A transmission signal that transmits a return standby signal that sets the return period of control data and monitoring data from the terminal device is sent from the central control device, and supports multiple monitoring and control circuits between the central control device and each terminal device. In a remote monitoring and control system that performs time-division multiplex transmission of data to be monitored, the same address is assigned to one switch or a plurality of terminal devices that monitor and control a load, and which monitoring and control circuit of the terminal device is assigned the same address. A circuit number setting section is provided to set whether a load is connected, the return period set by the return standby signal is divided into multiple parts and assigned to each circuit, and monitoring data from each terminal device with the same address is divided into multiple parts. By returning the data during the return period, even if switches or loads are distributed, monitoring and control can be performed without reducing the number of circuits that can be monitored and controlled. This has the effect of preventing transmission errors from occurring due to the same address.

[Brief explanation of the drawing]

Fig. 1 is a schematic configuration diagram of an embodiment of the present invention, Fig. 2 is an explanatory diagram of the same operation, Figs. 3 and 4 are block circuit diagrams of the main parts of the same, and Fig. 5a is a front view of the main parts of the same. Figure 5b is a side view of the main parts of the same as above, Fig. 5c is a rear view of the main parts of the same as above, Fig. 6 is an explanatory diagram of the same as above,
FIG. 7 is a circuit diagram of the main part of the same as above, FIG. 8 is a schematic diagram of the main part of the same as above, FIG. 9 is a block circuit diagram of the main part of same as above, FIG. Figures 12 and 13 are block circuit diagrams of the main parts of the same as above, Figure 14 is a front view of the main parts of the same as above, and Fig. 15 is a front view of the main parts of the same as above.
The figures are an exploded perspective view of the main parts of the same as above, Fig. 16 is a partially cutaway front view of the main parts of the same, Fig. 17 is an exploded perspective view of the main parts of the same as the above, and Fig. 18 is a side view of the same with a part of the above cut away. FIG. 19 is an exploded perspective view of the main parts of the same as the above, FIG. 20 is an exploded perspective view of another embodiment of the same, FIG. 21 is a block circuit diagram of the main parts of the same as the above, and FIG. 22 is a main block circuit of the same as the above. 23 is a front view of the main parts of the same as above, FIGS. 24 and 25 are explanatory diagrams of the same as above, FIG. 26 is a schematic diagram of the main parts of another embodiment, and FIG. Fig. 27b is a side view of the main part of the same as above, Fig. 27c is a rear view of the main part of the same as above,
FIG. 28 is a schematic configuration diagram of the conventional example, and FIGS. 29 to 31 are operation explanatory diagrams of the same. 1 is a central control unit, 2 and 3 are terminals, 4 is a signal line, 7 is a wireless relay terminal, 8 is an external interface terminal, and 9 is a data setting terminal.

Claims (1)

[Claims] 1. A central control unit and a large number of terminal devices having unique addresses are connected by a pair of signal lines, and address data for accessing each terminal device, control data for controlling the load, and data from the terminal device are connected by a pair of signal lines. The central control unit sends out a transmission signal that transmits a return standby signal that sets the return period for monitoring data, and time-division multiplexing of data corresponding to multiple monitoring and control circuits is performed between the central control unit and each terminal device. In a remote monitoring and control system configured to transmit data, the same address is assigned to multiple terminal devices that monitor and control one switch or load, and the switch or load is connected to which monitoring and control circuit of the terminal device. A circuit number setting section is provided to set the return period, and the return period set by the return standby signal is divided into multiple parts and assigned to each circuit, so that monitoring data from each terminal device with the same address is returned in each divided return period. A remote monitoring and control system characterized by: 2. The remote monitoring and control system according to claim 1, further comprising a wireless relay terminal device that returns data transmitted and received by a plurality of optical wireless transmitters and receivers to central control data. 3. The remote monitoring and control system according to claim 1, further comprising an external interface terminal for transmitting data with an external control device. 4. The central control unit is provided with a data storage unit that stores pattern control data for collectively controlling a plurality of loads, and a data setting terminal is provided for setting the pattern control data. A remote monitoring and control system according to scope 1.