JPH01140894A - Remote supervisory and controlling system - Google Patents

Abstract

PURPOSE:To freely connect an external controller, and to supervise and control load from many places by providing an external interface terminal equipment which transmits data between the external controller and a central control unit through a signal line by time division multiplex transmission. CONSTITUTION:The central control unit 1 and plural supervisory terminal equipments 2, in which an intrinsic address is set, and plural controlling terminal equipments 3 are connected by a pair of signal lines 4, and a time division multiplex signal is transmitted by this signal line 4. Besides, the external interface terminal equipment 8 is connected between the external controller 87 like a host computer and the central control unit 1, and the data is transmitted by the time division multiplex transmission through this terminal equipment 8 and the signal line 4.

Description

[Detailed Description of the Invention] [Technical Field 1] The present invention connects a central control unit and a terminal device with a pair of signal lines, and! This invention relates to a remote monitoring and control system that remotely controls a load by time-division multiplexing transmission of II control data, monitoring data, and the like.

[Background Art 1] Conventionally, when a host computer remotely monitors and controls a load, as shown in FIG. There is a device (for example, US Pat. No. 4,213,182) in which the load and -Ln are directly controlled via the terminal device 121. That is, the host computer 110 has a cpuiit that performs arithmetic processing,
It is formed of a ROMI 12 that stores system programs, a RAMI 13 that stores user programs, an I10114 that outputs data, a data memory 115 that stores supervisory control data, a clock generation circuit 116, and a power supply circuit 117. A program for controlling and monitoring the loads L1 to Ln is stored in the RAMI 13, and the CPU 111 executes this program.
Creates control and monitoring data for the loads L1 to Ln based on the monitoring and control data stored in the data memory 115, and
0 to transmit and receive signals for controlling and monitoring the loads L1 to Ln. On the other hand, the terminal device 121 receives the (f1) signal transmitted via the transmission interface 120 and performs load control or load monitoring based on commands from the host computer 110.

However, in such a conventional example, the transmission interface 120 of the supervisory control system is directly controlled by the host computer 110, so if the host computer 110 goes down for some reason, the remote There was a problem in that the entire monitoring and control system went down, making it impossible to monitor and control the loads L1 to Ln. Furthermore, since multiple host computers 110 cannot be easily connected to the transmission interface 120 of the remote monitoring and control system, loads L1 to Ln
There was a problem in that it was not possible to control the machine from a high point.

['9. [Object of the present invention] The present invention has been made in view of the above (7),
The purpose of this is to enable load monitoring and control from multiple locations by connecting external control devices arbitrarily, and to ensure that even if the external control device goes down, the entire load monitoring and control system will go down. Our goal is to provide a remote monitoring and control system that never fails.

[Disclosure of the Invention] (Configuration) 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. The central control unit sends out a transmission signal that transmits a return standby signal that sets the return period for control data and monitoring data from the terminals, and the monitoring data and control data are time-shared between the central control unit and each terminal. In a remote monitoring and control system that performs multiplex transmission, by providing an external interface terminal that performs time-division multiplex transmission of data transmission between an external control device such as a host computer and a central control device via a signal line. , the load can be monitored and controlled from multiple locations by connecting an external control device, and
To provide a remote monitoring and control system in which the entire load monitoring and control system does not go down even if an external control device goes down.

(Embodiment 1) FIG. 1 is a diagram showing a schematic configuration example of a remote monitoring and control system according to the present invention, in which a central control device 1, a plurality of monitoring terminals 2 to which unique addresses are set, and It is connected to the control terminal 3 through a pair of signal lines 4, and the central control unit fl! The transmission signal V, sent from 1 to signal R4, is
Pt52 As shown in Figure (a), a start pulse signal ST indicating the start of signal transmission, a mode data signal MD indicating the signal mode, ? Address data signal AD and load L to call the terminal device 2.3.

It is a bipolar (±24■) time division multiplexed signal consisting of a control data signal CD for controlling ~L, a checksum data signal C8, and a return standby signal WT for setting the return period from the terminals 2 and 3 , data is transmitted using pulse width modulation.

Each terminal device 2.3t' takes in the control data of the transmission signal Vs received via the signal 9#; t4 (when the address data of the R number s and its own unique address data match), and , return waiting signal W of transmission signal Vs
The monitoring data signal is converted into a current mode signal (signal #
X4 is short-circuited via an appropriate low impedance, and the signal is sent back.

The central control device 1 also 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 transmits a dummy transmission signal Vs in which the mode data signal MD is set to a dummy mode, and a dummy signal transmitting means that transmits a dummy transmission signal Vs that is a dummy mode data signal, and a dummy signal transmitted from one of the monitoring terminals 2 as shown in FIG. 2(b). An interrupt processing means is provided which detects the interrupt generating terminal device 2 when an interrupt signal Vi as shown in FIG. On the other hand, when the monitoring terminal 2 receives a monitoring input due to the operation of the switches S, ~S, it generates the m') inclusive signal Vi in synchronization with the start pulse signal ST of the dummy transmission signal Vs. At the same time, an interrupt generating means returns its own unique address data in synchronization with the return standby signal WT of the transmission signal Vs in the 7-dress confirmation mode from the central control unit 1, and interrupt access in response to an interrupt from the central control unit 1. Data return means is provided for returning monitoring data corresponding to the monitoring input when the mode transmission signal ■S is transmitted.

In addition, in the central control device 1, the monitoring terminal device 2 connects the central control device i! Control data to be transmitted to the control terminal 3 is created based on the monitoring data sent back to i, and is also transmitted to the control terminal 3 to control the load and -L. In addition, the control terminal arranged in the distribution board 6 or the relay control board 6a? S3 has the dimensions agreed upon by the distribution board, and its control output controls a remote control relay 5 for load control (a latching relay that can also be turned on and off using a hand switch). , the central control unit 1 has a delay timer function that performs load control after a constant I+ and 7-question delay from switch operation.
By having this in place, the lighting load can be turned off in a delayed manner using the normal monitoring terminal 2. Furthermore, if the dimming data is stored in correspondence with the switch, the lighting load can be dimmed and controlled using a normal monitoring terminal.

tjS3 diagram shows the circuit configuration of the control terminal 3,
The control terminal device 3 includes a power supply circuit 10 that forms a circuit power supply from a transmission signal Vs transmitted via a signal a4, and a power supply circuit 10 that receives the transmission signal Vs and performs signal processing, as well as a return signal va.
When controlling one load, the signal processing circuit 11 forms and transmits a signal, and the address setting section 12 sets a unique address. ); a circuit number setting unit 13 for setting which circuit is to be used to control the load; and a drive circuit 14 for driving a relay circuit 15 for load control.
It is formed of a monitoring circuit 16 that monitors the 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 forms a control output based on the bit selected by the circuit number setting section 13. Output relay 1
5, and also forms return monitoring data based on the load monitoring input input via the monitoring circuit 16 and sends it back to the central control unit 1 using a current mode return signal VB. Note that, without providing the circuit number setting section 13 in the control terminal 3, the relay circuit 15 is formed so that the load is controlled by each bit of the control data,
It goes without saying that four control circuits may be formed.

fjS4. The figure and PJS5 show the monitoring terminal 2, whose circuit configuration is similar to that of the control terminal 3, and the monitoring circuit 16 monitors the state of the switch S. Based on the 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. The diodes LD, LD2 are 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 a dip 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 (
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 connected to the control terminal 3 can be controlled based on the monitoring data of the switch S returned from the monitoring terminal 2 set to the same value. Note that the monitoring terminal 2 has a plurality of switches S + ,
If the switch status of S2... is to be monitored, the circuit number setting section 13 is not necessary, and the monitoring circuit 16 includes a plurality of switches S2, S2... All you have to do is input the switch status. Further, the monitoring terminal 2 that monitors the switch state of the pattern control switch is also 1fIt, similar to the case of the above-mentioned individual control switch.

Hereinafter, a case will be described in which a plurality of distributed loads are controlled by a plurality of control terminals 3 to which the same seven addresses are respectively assigned.

Now, the same address is assigned to a plurality of 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 T11 is divided into multiple parts and assigned to each circuit, and the monitoring data from each terminal device 3 with the same address is divided into each divided return period T,
~I am trying to have it returned to T4. FIG. 6 shows an example of dividing the return period T. As shown in FIG. 6(a), the return period TO is divided into 2-bit bit data (load on → (1, 0), load off → (0, 1)) is transmitted so that (Ro = R+, R2-R:+, R4
, R, , R6, R7), four divided return periods T, -T, respectively corresponding to the control circuits, are set, and during this divided return period T1 to T4, a pulse r is set according to the monitoring data.
f1 change i1! The received return signal VD is then sent back. FIG. 6(b) shows an example of return of monitoring data from the terminal device 3 in which the Nol control circuit is set, and bit data is returned only during the divided return period T1 corresponding to Nol. ing.

The 6th tl (c) is the return signal returned 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. 〜VB4 combined return signal VB'(
The return signals VD1 to VB4 from each terminal 3 are sent back during divided return periods T and -T, respectively, to prevent interference from occurring. . Therefore, even if the same address is assigned to a plurality of terminal devices 3, transmission errors due to interference will not occur, and malfunctions will not occur.

It goes without saying that in the same way, the same address may be set for a plurality of monitoring terminals 2 that monitor one switch, and the switch monitoring data may be returned during the divided return period T, to T4.

By the way, as mentioned above, the same address is set for a plurality of monitoring terminals 2, and the switch monitoring data is sent in divided return periods T.
1 to T4 respectively, and when the input latch is set to perform interrupt processing when the monitoring input changes, the monitoring inputs of the monitoring terminals 2 to which the same address is set will be sent back and forth one after the other. In this case, the human power latch that was set when the monitoring input that changed later is reset by the interrupt processing end signal of the data return of the i-vision human power that changed earlier, and the human power latch that was set when the monitoring input that changed later changes. The problem arises that it is ignored. Therefore, in the embodiment, the above problem is solved by providing an input latch having a bit corresponding to the monitoring input and resetting the input latch bit by bit after interrupt processing is completed.

That is, FIG. 7(a) shows the interrupt processing operation, in which the central control unit 1 constantly sends out a dummy transmission signal Vso to check whether the monitoring terminal 2 sends out the interrupt request signal Vi. are doing. Here, when the monitoring power of any of the monitoring terminals 2 changes, 1 is set to a predetermined bit of the human power latch corresponding to the monitoring input whose input has changed, and gummy data is sent from the monitoring terminal 2. Transmission signal V
The interrupt request signal Vi is sent out in synchronization with the start pulse input signal ST of s, ). The central control unit 1 that has borrowed this interrupt request (No.
Transmission signal Vsl of address confirmation mode V for specifying
Send out. Transmission signal Vsl in this address confirmation mode
transmits the upper 4 bits of the address data as address data for accessing the monitoring terminal 2, accesses 16 monitoring terminals 2 at once, and during the waiting period for the return, a unique request is sent from the interrupt requesting terminal 2. The lower 4 bits of the address are returned. When the lower 4 bits of the unique address are returned from the interrupt request terminal 2, the central controller 1 generates an interrupt request by combining the upper 4 bits of the address data transmitted by itself and the lower 4 bits sent back. The 8-bit unique address of the terminal device 2 is specified, and this unique address is used as address data to request an interrupt from the terminal device 2. Sends a transmission signal Vs2 in interrupt access mode to access the interrupt request terminal 2.
The bit data RO to R7 as shown in FIG. 8(a) indicating the changed bits of the monitoring input are sent back from the monitor input, and the changed bits are confirmed. Next, a change confirmation mode transmission signal vS is sent to confirm whether the changed bit has changed to the on side or the off side, and the interrupt request terminal 2
sends back data indicating the state of the monitored input after the change. Next, the central control unit r! 11, when this data is received, the input latch of the interrupt-required FC terminal device 2 is reset)
Then, a reset mode transmission signal Vs is sent out to enable reception of the next monitoring input, and the input collar edge is reset.

At this time, in the embodiment, the reset mode transmission signal V
84, control data CO to C7 (complement of bit data RO to R7) as shown in FIG. (resets the 0 bit). Further, the bit data is returned again from the interrupt request terminal 2 whose input latch has been reset, and the central control unit 1 confirms that the input latch has been reset by the return of this bit data, and monitors it by the above-mentioned interrupt processing. The input capture operation is completed, and processing for controlling the load based on the returned data is performed. In addition, FIG. 7(b) shows the central control unit ll! 1 is a flowchart showing a first monitoring control operation;

By the way, as shown in FIG. 9, the first monitoring terminal 2
The monitoring power ■ changes and the specified bit of the input latch ■ becomes 1.
is set and the above-mentioned interrupt processing is being performed, if the monitoring power ■ of the second monitoring terminal 2 to which the same address is set changes, the human power latch of that monitoring terminal 2 changes. The predetermined bit of (2) becomes 1 and the interrupt request signal Vi is set to be sent, but acceptance is not possible during interrupt processing due to a change in the supervisory power (2). On the other hand, at the end of the interrupt processing due to a change in the monitoring power ■, in the embodiment, the input latch ■■ is reset bit by bit, and the first monitoring terminal 2
Since the predetermined bit of the manual latch (■) of the second monitoring terminal 2 is not reset by the reset mode transmission No. 16 Vs sent at the time when the interrupt processing for the The interrupt request signal Vi continues to be sent from the terminal device 2. Therefore, the central control device 1 immediately accepts and accepts the interrupt request from the second monitoring terminal 2 after finishing the reply processing of the change state of the monitoring human power (■) due to the interrupt request from the PISl monitoring terminal 2. , the second monitoring terminal 2 is activated by the interrupt processing described above.
The change status of the monitoring force ■ is sent back from the monitor. Therefore, there will be no inactive period for interrupt processing, and even if the monitoring power ■■ of the monitoring terminal 2 with the same address changes one after the other, the monitoring power ■■ that changed later will be This prevents the system from being ignored and prevents malfunctions due to the monitoring personnel being ignored.

! ! f':10 Figure shows the calculation path J! of the central control unit 1. l!
This figure shows a circuit configuration for preventing runaway of the CPU 1a, which forms part of the CPU 1a. , a reset pulse of the counter CO is outputted to the R terminal every time the transmission signal Vs is sent out, and a time clock 2 obtained by dividing the clock is outputted to the φ terminal. The count-up output of the counter Co, which counts this time clock and is reset by the reset pulse, is applied to the INT terminal (input terminal of the initial signal (active low) that initializes the operation program) via the transistor Q. . Here, the period of the reset pulse when time division multiplexing transmission is performed normally is set shorter than the time from when the counter Co is reset until the count-up output is obtained,
No initial signal is output during normal operation.

On the other hand, if the CPU 1a goes out of control for some reason, the reset pulse will no longer be output, so when the counter CO counts up, a count-up signal is applied to the TNTra child as an initial signal, and the CPU 1a
The operating program of la will be initialized and it will automatically return to normal operation.

Next, a wireless system using optical communication will be explained. Figure 11 shows an overview of this entire wireless system.
The configuration diagram shows a wireless transmitter 19 that transmits an optical wireless signal, and there are two types: a wall hook type that is hung on a wall, and a desktop type that is placed on a desk. A plurality of wireless receivers 24 that receive optical transmission codes from the wireless transmitter 19 are installed on the ceiling 60. Each of the wireless transmitters 19 is set with seven unique addresses, and from the perspective of the central control unit 1, it is equivalent to the monitoring terminal 2.
A transmission code for controlling J% on/off is transmitted as an optical wireless signal as shown in f:trJ13 (a). The transmission code of this optical wireless signal consists of address data AD and control data CD, as shown in the fjs14 diagram. Here, the mode data Sl before the address data AIM) is the remote control device f for time division multiplex transmission.
ffh! ? This is data for selecting whether to perform an operation in conjunction with other systems in the wireless system or to perform an individual operation in the wireless system. FIG. 16 shows a specific circuit example 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 a light emitting section 37 and the like.

On the other hand, a wireless receiver 2 that receives optical wireless signals
4, as shown in FIG. 12, an optical receiving section 20 equipped with an optical sensor 20aIeJ% consisting of seven optical diodes that receives the optical wireless signal from the wireless transmitter 19, and a carrier wave of the output signal from the pre-reception M section 20. A tuning circuit 21 having a tuning function for detection and an output of the tuning circuit 21 are connected to a first
The baseband conversion section 22 converts the signal into a baseband signal as shown in FIG. 3(b). Here, the baseband signal from the wireless reception 'a24 is sent out on a dedicated signal line 23, and the wireless relay terminal 7 and the plurality of individual receivers 2 connected to this signal line 23
8. The wireless relay terminal 7 constituting the wireless interface unit receives baseband signals from the wireless receiver 24 all at once, and as shown in FIG.
Address data and control data obtained by converting a baseband signal into a binary parallel signal are input to a setting section 27 that selects whether the operation is linked to another system or an individual operation, and a receiving section 25 that converts the baseband signal into a binary parallel signal. system interface 2
It consists of 6 mag.

This system interface 26 is connected to the signal MA4 of the multiplex transmission control system, and is processed according to the procedure on the central controller side.

The receiving section 25 of the wireless SKI device 7 extracts only the signal 7 format of the baseband signal, the setting section 27 determines whether it is system operation or individual operation, and receives the received address data and control data. The signal is output from the iR unit 25 to the system interface 26.

Moreover, the individual receiver 28 includes a receiving section that receives the baseband signal from the wireless receiver 24, and an address setting section that sets each unique address. It consists of a load interface etc. that drives the load ♂1j control relay etc. based on the control data, and it compares the baseband signal with the setting of each individual bone 46 device, and if they match, the load control relay is activated by the load interface. etc., 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 individual receiver 28 as signal #X23. If the mode data SI of the transmission code selects individual operation, the wireless mR1 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 date 28 of the optical wireless signal from the wireless transmitter 19 selects system operation,
The wireless relay terminal 7 will respond. In other words, the address and control data obtained by converting the baseband signal into a binary parallel signal are sent to the system interface 26.
, and data return processing is performed according to a predetermined procedure on the central control device 1 side.

Here, the configuration of the wireless receiver 24 is as shown in FIGS.
Consists of a detection head 42 that incorporates an optical sensor 20a consisting of an autodiode and a CFM signal processing circuit (light receiving section 20, tuning circuit 21, baseband conversion section 22), and is fitted and attached to a receiver base 41. A pair of inverted-shaped hooking blades 43 protruding from the upper surface of the detection rod 42 are connected to a pair of blade insertion holes /I4. formed on the lower surface of the receiver base 41.
By inserting the sensor into the sensor and horizontally rotating the detection head 42,
The hook blade J43 connects to the hook connection terminal 4 inside the receiver base 41.
5. In the embodiment, an id protrusion 46 is provided at the center of the detection rod 42, and an insertion hole 47 into which the id protrusion 46 is inserted is provided at the center of the lower surface of the receiver base 41. is,
A hook blade 43 is provided protruding around the id projection 46, 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 4
8 to match the marker 49a, the hook blade 43
is adapted to be reliably engaged and connected to the hook engagement terminal 45. In the embodiment, the shapes of the two throwing blade insertion holes 44 are different, and a triangular part is provided at one tip of the hooking blade 43 to easily accommodate the case where connection polarity is provided. There is. Further, in the embodiment, the plug blade insertion hole 44 and the blade insertion hole 47 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 has an optical circuit that is sensitive to noise, that is, a preamplifier section that amplifies the weak signal output from the optical sensor 20a. The circuit of the receiver 20 is mounted on a second printed circuit board 51, and a shield case main body 52 is provided with a protrusion hole 52a for the optical sensor 20a, and a cover 5 is provided with a lead wire insertion hole 53a.
It is housed in a shield case 54 formed by 3 and placed 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. 23 shows another example of implementation, in which the tuning circuit 21 includes the same circuits 'I4:I 21. An auxiliary printed circuit board 54 is provided in order to mount the coil 21a on the printed circuit board 50 with the coil 21a laid down. The thickness of the signal processing section to be detected can be made thinner than when the coil 21a is installed upright.
2 can be made thinner.

FIG. 24 shows the configuration of an external interface terminal 8 according to the present invention, which performs time-division multiplex transmission of data between an external control device 87 such as a host computer and the central control device 1. #! A transmission signal transmitting/receiving section 80 that transmits and receives time division multiplexed transmission signals transmitted via I4, and insulating sections 81a and 81b consisting of seven Otocobras that transmit signals in an electrically insulated state, and perform signal processing and judgment. It is formed of a central control section 82, a data storage section 83 that stores the operating state of the remote monitoring and control system, a watchdog timer 84 that resets the CPU when the central control section 82 goes out of control, and data output sections 85a and 85b. Bit serial data is output via the data output section 85a, and bit parallel data is output via the data output section 85b. Further, in the embodiment, bit serial data (in the embodiment R
The central control section 82 includes a condition setting means for freely changing transmission conditions such as the baud rate and stop bit of the 8232C standard) and a transmission error prevention means for checking the parity of data input via the data input/output sections 85a and 85b. It is set in. The transmission conditions are set using switches S) for setting the baud rate] 1 to Sb, switch SC for setting the stop bit, and switch S for setting the parity.
13+wSp2 and switch S- for word length setting, switch S allows the baud rate to be freely set in eight steps.
The switch state of b, ~811° is taken into the central control unit 732 via the encoder EC.

The operation of the external interface terminal 8 will be explained below. External control device now? By connecting the computer main body 88 of the i87 and the data input/output unit 85a or 85b of the external interface terminal 8 via the interface 88, data can be exchanged between the external control device 87 and the external interface terminal 8. It is done. Here, the external interface terminal 8 transmits the transmission signal Vs transmitted via the line A 4 to the transmission point 1.
The data sent by the transmission signal Vq is received by the No. 1 transmitting/receiving unit 80, and the central control unit 82 constantly monitors the data sent by this transmission signal Vq to judge the operating state of the load, pattern control state, etc., and performs load control. The status data is stored in the data storage WS33. 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 sends the command to the central control unit 82. is decoded and status data such as the load control status and pattern control status stored in the data storage [83] is sent back to the external control device 87. On the other hand, when a load control command is sent from the external control device 87 to individually control or pattern control the load of the remote monitoring and control system, the external interface terminal 87
The central control unit 82 decodes this command and performs the same operation as the monitoring terminal 2 of the remote monitoring and control system.
A return signal for returning monitoring data similar to that when the individual operation switch or pattern control switch is pressed is sent from the transmission signal transmission/reception unit M 80 to the 4B number M4. In other words, the external interface terminal 8 is configured to be unique 71'less by the control command, and also has switch status monitoring data set, so that it operates like the monitoring terminal 2. In response to the pseudo switch operation performed on the 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 allows the remote monitoring and control system to operate in conjunction with the external control device 87, and local control operations, timer operations, and pattern operations that control multiple systems using the external control device 87 as a control system. etc., and control operations can be grayed-up as desired. In addition, it is possible to send a pattern setting command from the external control device 87 to the external interface terminal 8 to change the settings of a control pattern that collectively controls loads, and also to confirm the setting pattern by sending a setting confirmation command. It has become.

Furthermore, when the external interface terminal 3 confirms that the operating state of the load has changed, the external interface terminal 8 interrupts the external control device 87 and transmits the load change data. For example, the load operating state can be constantly monitored on the external control device 87 side.

On the other hand, the input/output data of the external interface terminal 8 may be either bit serial data or bit parallel data, so data can be easily exchanged with the external control device fi87 without using a conversion interface.

In addition, in the embodiment, bit serial data (R8232
Baud rate (75 baud, 150 baud, 300 baud, 600 baud) when outputting C standard, transmission code ASCII)
baud, 1200 baud, 2400 baud, 4800 baud, 9
600 baud), stop bit (1 bit, 2 bit)
, parity (none, even, odd), word length (8 bits, 7 bits), etc., using switches Sb, ~Sb8, S8, S
Since a condition setting means that can be freely changed with p+ySI)2 and S- is provided, the switch Sb+-8b-1S
It is possible to support the input/output of various bit serial data by setting the conditions with slS p+ t S p2 and SW, and by turning off all the switches Sb1 to Sb6 for setting the baud rate, the switch Sb1 ~Sba is utilized to switch the data processing of the central control unit 82 to data processing of bit parallel data. Furthermore, the embodiment is provided with a transmission error prevention means for preventing transmission errors of input data by parity check, so that malfunctions of the system due to data transmission errors are prevented from occurring. On the other hand, when inputting and outputting bit parallel data via the data output unit 85b, a large amount of data can be input and output at high speed, and data can be output using a device having a simple data processing circuit. .

FIG. 25 shows a time chart when bit parallel data is input/output by handshake between the external control VC device 87 and the data input/output section 85b of the external interface terminal 8. When transmitting data from 87, external control device 87
When the transmission data is determined, the strobe signal from the external control device fi87 is set to "L". By this strobe signal becoming L", the data input/output section 85b receives the transmission data from the external control device 87. When data reception is completed, the ACKff1 signal is set to "L", thereby setting the strobe signal to 'H' and entering a standby state. Note that data transmission from the data input/output unit 85b to the external control device 87 is also performed using a similar handshake.

26 and 27 show the external appearance of the external interface device 8. The back panel of the case 90 has a power switch 91 and a bit serial data (R823
2C) connector 92, a connector 93 for bit parallel data, and a connection terminal 94 for time division multiplex transmission signal M4, and the front panel includes a power indicator lamp 96, a transmission signal reception indicator 97, and a connector 93 for bit parallel data. , a data signal reception indicator lamp 98 are provided. In addition, external control v
c(!! 87 is the main body 87a, the keyboard 87b,
It is composed of a display 87c, and in the embodiment,
It is connected to the external interface 7 and the C-S terminal 8 via an R8232C cable 99. Note that the external interface terminal 8 is controlled by the external control 5! It goes without saying that you can self-discipline and integrate it as an Inter 7 ace port in the c-87. Furthermore, an external interface terminal 8 dedicated to monitoring or control may be formed.

FIG. 28 shows that the external interface terminal 8 is formed to operate as a terminal for a plurality of remote monitoring and control systems X, to Xn, and each remote monitoring and control system XI-X, n
The system is designed so that time division multiplex transmission of data can be performed between the central control VC device 1 and the external control device 87, making it easy to construct a large-scale system.

Figure 1529 shows a data input/output port for the external interface terminal 58, which is equipped with a port for outputting n-bit mode data Dm and a port for inputting and outputting m-bit transmission data DS, allowing for complex data transmission. This system allows data to be sent and received directly without using any system, and the load can be monitored using an external control device 8 formed from a simple digital circuit without using expensive equipment such as a computer. It is possible to control it.

In FIG. 30, the mode data Dm and the transmission data Ds are each 8 bits, and the mode data D! is composed of 2-digit hexadecimal data. An example is shown in which I is channel data (corresponding to address data) and transmission data Ds is data for selecting a load to control.

FIG. 31 shows a block circuit diagram of the pattern setting terminal 9 which is only equipped with a data input section 105 for inputting pattern control data and returns the input pattern control data to the central control device 1. Transmission signal transmitting and receiving unit 10 that transmits and receives time division multiplexed transmission signals transmitted via i4
0, an insulating section 101a, 101b consisting of seven external couplers that transmit signals in an electrically insulated state, a central control section 102 that performs signal processing, and a confirmation section 102 that performs input data or confirmation sent from the central control device 1. It is formed of a data storage section 103 that stores pattern control data, and I10 sections 104a to 104C that control data input/output,
Data set by the switch section 107 of the data input section 105 is taken in via the I10 section 104a, and the set data is sent to the display control section 108. Furthermore, the data stored in the data storage section 103 can be outputted as appropriate via the I10 section 104b, and in the embodiment, the output data can be printed out using a data output section 105 consisting of a printer. . Note that each circuit other than the transmission signal transmitting/receiving section 100 of the pattern setting terminal 9 is connected to a terminal power source 10.
Power is supplied from 6.

FIG. 32 shows a diagram of the switch panel section of the data input section 105, in which a load selection switch SWa for selecting each load of the control terminal 3 divided into multiple blocks,
SWa', swb, swb', SW, a-+ SW+
d--S W+aa-S W+sd and selection pool a-, p
Block changeover switch SW2. and a data set switch 5W21 that stores the selected data.
, a data return switch SW2□ for returning the stored data to the central controller 1, and the central controller i! 1 and a data transfer switch 5W23 for transferring pattern control data from the pattern setting terminal 9 to the pattern setting terminal 9. In the figure, number setting switch S W c + S W c '
is a push button switch for inputting the pattern number or group number by up or down, and the mode changeover switch SW2. is a slide switch that switches between initial setting mode, confirmation/change mode, and normal mode. Clear switch SW7. is the input data (display part DP,
A push button switch, switch SW2. ．． SW 27 and SW 2 g are total pattern switches for setting the type of pattern control data;
These are floor pattern switches and group switches. Further, the all-on switch SW, the all-off switch 5W31, and the all-area outside switch 5W)2 are push-button switches that allow specific data input at the time of setting the total pattern with a simple touch.

In addition, the load numbers (channel numbers) of the control terminal 3 divided into four blocks are displayed on the display sections DP, ~DP, and 6, respectively.
h, channels 48 to 63 are displayed.

The operation of the pattern setting terminal 9 will be explained below.

Now, when setting pattern control data from the data input section 105, select the mode changeover switch SW2. to the initial setting mode, and switch SW28 to SW
2 Input the type of pattern control in g. Next, the pattern number corresponding to the pattern switch is set using the number setting switches SWc, SWc', and the block changeover switch SW2. to select a block, and set the terminal number (channel number) of the control terminal 3 using switches S Wa, S Wa', swb, swb', and switch SW, a"'SW, d""
Set the load circuit number to turn on each control terminal 3 using 5W1sa-8W and 6d, and turn on the set switch SW.
By pressing 21, the pattern control data is stored in the data storage section 103. 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, block changeover switch SW2. The number of the control terminal 3 of the block selected by is displayed on the display section G.
It is displayed in P, ~GP, . That is, block changeover switch SW2. When the first block is selected by operating , the light-emitting diodes corresponding to the terminal numbers 0 to 15 light up and the load circuits (4
circuit) is switch SW, a~SW, d...
・S W Isa 4 S W + 6d displays the selectable items, and a light emitting light corresponding to terminal numbers 16 to 31 tells you to press the block selection switch SW 2° to switch to the second block. Gouio lights up to indicate that the load circuit of the control terminal has been selected, and switches SW, a to SW, d...
...It is designed to display that it can be selected by SW + 6a - SW 1sd. The same applies to the case where the block changeover switch SW2° 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 transmitter/receiver 100 and signal #14 by pressing the data transfer switch SW2□, and the pattern control data in the central controller 1 is Stored in data storage memory.

On the other hand, when confirming or changing the set pattern control data, first use the data transfer switch SW 2.
By pressing 3, the pattern setting terminal 7 sends a transmission request signal to transmit the pattern control data stored in the memory 1 in the central controller 1, and transmits the data transmitted from the central controller 1. m-minute transmitter/receiver 100
The pattern control data received and transmitted is stored in the data storage g1 section 103. Next, this data storage unit 1
The pattern control data can be confirmed by outputting the data stored in 03 to a printer.

Furthermore, the pattern control data can be changed by operating the switch section 107 in the same way as in the case of initial setting, and the changed pattern control data can be transferred to the data transfer switch S.
By pressing W 22 the central control unit f! If you send it back to 11, it will be central! The pattern control data stored in the memory in the lJ m device 1 is rewritten, and thereafter, the load is 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 103 by initial setting or modification.

As described above, in the embodiment, the pattern control data can be easily set and changed by operating the switches in the data setting section 105 of the pattern setting terminal 9, and the pattern control data can be transferred to the central controller. Since it is stored in the memory in 1, multiple loads can be turned on or turned on by using a pattern control switch, and it is necessary to set the multiple loads to be turned on or turned off using the respective switches. The setting operation is simpler than that of the conventional example, and the number of setting switches in the data setting means can be significantly reduced.

By the way, as mentioned above, the pattern control data is sent to the central controller i! 1, and when multiple pattern controls are performed using button-on and button-off switches, if there is a load common to multiple types of pattern control, the common load There is a problem in that erroneous control may be performed in which the power is not turned on.

For example, as shown in FIG. 33, the lighting in the gymnasium ■.

, ~L35 is pattern-controlled by the 2pm illumination pattern P,,P2, the illumination pattern Pl
Illumination of parts common to P2 L l ) l L 231
L 1 ) must be lit together when controlled by both lighting patterns, but from the entire lighting state where lighting is turned on in both lighting patterns P, , P2, one lighting pattern P1
(or P2), there is a problem in that the illumination in the common area is turned off. That is, the other illumination pattern P2 (or Pl
) When the pattern control switch of ) is turned off, the illumination of the common part to be lit in the sword illumination pattern P2 (or Pl) I-131 L 2□L)
There is a problem in that desired partial illumination cannot be performed because the light is turned off. In the embodiment, in order to solve this problem, when one illumination pattern PI-P2 is turned off, the other illumination pattern P2. Check whether lighting is being performed by PI, and if lighting is being performed, the lighting of the common part L + y
* L 21? The central control device 1 is provided with an erroneous control prevention means that prevents the L ss from being turned off.

FIG. 34 is a 7tt-chart showing the above-mentioned erroneous control prevention operation. If an operation of the pattern control switch is detected now, it is determined whether the operation is an ON operation or an OFF PA operation, and whether the ON operation is In the case of OFF P1 operation, an OFF operation routine is entered to prevent the following erroneous operation and turn off the illumination. That is, in the off operation routine, first, the address of the pattern control switch that was turned off (address 7 of the monitoring terminal 2) is determined, and predetermined data is retrieved from the memory in which the pattern control data is stored based on the address. read out. Next, in order to heavily control the lighting L 1ffr L 231 L sy in the common area, it is determined whether or not other pattern control switches are turned on, and whether or not control is being performed using other lighting patterns. If not, the illumination is controlled all at once based on the pattern control data read out from the memory. On the other hand, if control is being performed using another illumination pattern, the illumination L+iwLz3. Lz: Perform an operation that does not turn off the + light. Therefore, when the - lighting pattern is turned off, the lighting in the common area that is turned on by the other lighting patterns L13tL2**L
3) An erroneous operation in which the light is turned off can be prevented.

Since FIGS. 35 to 36 show other data setting means, the individual control switches S, ~S, monitored by the monitoring terminal 2 are arranged centrally (lighting control switches for each floor are arranged in a row). ) Is the data set on the switch panel section? j! A pattern setting terminal 9° is constructed by arranging a monitoring terminal 2' which is a pattern control switch with a function.The monitoring terminal 2' includes a normal/setting changeover switch SW.

and initial/change changeover switch SW3. is provided. In the illustrated example, each monitoring terminal monitors three pattern control switches at 2 degrees, but
The state of one or two pattern control switches may be monitored.

Now, when the normal/setting changeover switch SWso is pressed to enter the setting mode, pattern control data can be set using the individual control switches 81-S. If you want to make initial settings here, press the initial/change switch SW3. By switching to the initial setting mode, all the pattern control data set in advance is cleared, and the initial setting can be easily performed manually. 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 possible to easily initialize or change the pattern control data in accordance with a change in layout act.

[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. The central control unit sends a transmission signal that transmits a return standby signal that sets the return period for monitoring data from the VRA terminal, and the monitoring data and control data are exchanged between the central control unit and each terminal. In a remote monitoring and control system that performs time-division multiplex transmission, the host computer can We have created a remote monitoring and control system that can connect any external control device such as the above to monitor and control loads from multiple locations, and that will not cause the entire monitoring and control system to go down even if the external control device fails. The effect is that it can be provided.

[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 as above, FIG. Main part front view, Figure 5 (b
) is a side view of the main parts of the same as above, Fig. 5(C) is a rear view of the main parts of the same as above, Figs. is a schematic configuration diagram of the main parts of the same as above,
Fig. 12 is the main block circuit diagram of the same as above, Fig. 13 is an explanatory diagram of the operation of the same as above, Fig. 15 and Fig. 1
6 is a block circuit diagram of the main parts of the same as above, FIG. 17 is a front view of the main parts of the same as above, FIG. Figure 20 is an exploded perspective view of the main parts of the same, Figure 21 is a partially cutaway side view of the same, Figure 22 is an exploded perspective view of the main parts of the same, and Figure tlS23 is an exploded perspective view of another implementation example of the same. A perspective view, FIG. 24 is a main block circuit diagram of the same as above, FIG. 25 is an explanatory diagram of the same H,
Figure 26 is a perspective view of the main parts of the same as above, ttS27 (a) (b)
)(c) is a top view, front view, and rear view of the same main parts as above, No. 28
Figure and Vt1IJ29 diagram are the same as above ff! ! 30 is an explanatory diagram of the same operation as above, Fig.
3 and 34 are explanatory diagrams of the same operation, FIG. 35 is a schematic diagram of the main parts of another embodiment, FIG. 36 (, ) is a front view of the main parts of the same, and FIG. 36 (b) is a side view of the main part of the same as above, 3rd
6rA(c) is a rear view of the main parts of the same, and FIG. 37 is a schematic configuration diagram of a conventional example. 1 is the central controller, 2 and 3 are terminals, and 4 is (, j ′l
7 is a wireless relay terminal, and 8 is an external interface terminal. Agent Patent Attorney, 7T tB 艮 7 Figure 5 Figure 7 (G) Figure 1 O Figure 13 Figure 14 Figure 15 Figure 16 Figure 17 Old Figure 19 Figure 22 Figure 25 Figure 26 Figure 27 Circle diagram Figure 29 Figure 30 Figure 33

Claims (2)

[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 load, and monitoring data from the terminal devices are A remote monitoring control system in which a transmission signal for transmitting a return standby signal that sets a return period is sent from a central control unit, and monitoring data and control data are time-division multiplexed between the central control unit and each terminal device. 1. A remote monitoring and control system comprising: an external interface terminal for time-division multiplexing data transmission between an external control device such as a host computer and a central control device via a signal line. (2) 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 monitoring data from the terminal devices are A remote monitoring control system in which a transmission signal for transmitting a return standby signal that sets a return period is sent from a central control unit, and monitoring data and control data are time-division multiplexed between the central control unit and each terminal device. In the system, an external interface terminal is provided to time-division multiplex transmit data between the external control device and the central control device via signal lines, and time-division multiplex transmission of data sent and received by the optical wireless transmitter/receiver is provided. A remote monitoring and control system characterized by being equipped with a wireless relay terminal that sends data back to a central control device.