JPS58125995A - Remote monitor controller - Google Patents

Abstract

PURPOSE:To understand an actual state of circuit connection of each terminal device, by detecting by a center device the presence or absence of answer bits which are sent back from terminal devices to a sending bit train. CONSTITUTION:A center device CNT is connected to each terminal device Ti via a circuit, and a single device connected to each device Ti is controlled by a command given from the device CNT. At the same time, the device is monitored by the device CNT and on the basis of the information given from the device. In this case, the bit trains of the same number as the maximum terminals capable of connection of circuits are transmitted from the device CNT and after a signal informing the confirmation of terminals is transmitted. Then the presence or absence is detected for the answer bits sent back sequentially to the bit train from the device Ti. As a result, the device CNT confirms successively the connection of circuit for each device Ti.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a remote monitoring and control device in which a central device monitors and controls devices connected to a plurality of terminal devices arranged in a relatively narrow area, and particularly relates to a remote monitoring and control device that monitors and controls devices connected to a plurality of terminal devices arranged in a relatively narrow area. can be quickly and easily confirmed by the center device by transmitting a terminal confirmation signal with a simple configuration.

Generally, in a relatively narrow area such as a small-to-medium-sized store or a general animal garden, various types of detectors are used to monitor the status of various devices distributed over long distances for purposes such as energy conservation, crime prevention, and disaster prevention. Regarding remote monitoring and control devices that monitor and centrally control, since the target of monitoring and control is relatively small, the device configuration can be simplified and installed at low cost, and it is difficult to actually monitor and control the device. It is necessary to be able to easily and easily check the actual number of terminal devices and perform monitoring and control efficiently.

On the other hand, in what is considered to be a typical example of this type of remote monitoring and control device, the following various functions are performed centrally by a center device.

(1) Centralized remote control of load equipment using a selector switch (2) Centralized remote monitoring of load equipment using a light-emitting display attached to the selector switch (3) Programmable batch remote control using a lifestyle pattern switch (4) Fire, gas leak, etc. Disaster prevention by reporting the occurrence of an accident, crime prevention by reporting the detection of an intruder, and display by monitor, etc. of the location where the accident occurred (5) Calling between rooms 6) Announcement of visitors by intercom and monitor television camera (7) Clock, timer, etc. Various Announcements (8) Various Numerical Calculations Therefore, in a center device that centrally performs the various functions mentioned above, it has a complex configuration with a large number of units for each function, and is expensive. Since it is a parable, there is the problem of simplifying its configuration so that it can flexibly perform a rich variety of functions.
However, in order to grasp the actual arrangement status of each terminal device and perform efficient monitoring and control, the signal processing required to grasp the actual situation is likely to become complex and complicated. It was necessary to be able to quickly and easily grasp the terminal deployment status at the nose of the 121ISS through processing.

In other words, in order to perform this remote monitoring control, generally,
Have you registered the identification code of each terminal device in the center device in advance? Conventionally, it was impossible to confirm whether each terminal device was actually connected to the line unless the registered identification code was used to emit each terminal device and actually communicate. However, there is a drawback that it is not easy to grasp the actual state of arrangement of terminal devices in a remote monitoring and control system, and it takes time and effort.

An object of the present invention is to eliminate the above-mentioned conventional drawbacks, and to enable the center device itself to detect the line connection status of each terminal device and quickly grasp the actual situation by signal processing with a simple configuration. An object of the present invention is to provide a remote monitoring and control device.

That is, the remote monitoring and control device of the present invention connects a center device and a plurality of terminal devices via lines, and controls at least one device connected to the terminal device according to a command from the center device. In a remote monitoring and control device that controls the device and monitors the device by the center device based on information from the device, subsequent to sending a signal from the center device notifying terminal confirmation,
The center device transmits a number of bit strings equal to the maximum number of terminals that can be connected to the line, and detects whether response bits are sequentially returned from the plurality of terminal devices in response to the bit string. This system is characterized in that the line connections of a plurality of terminal devices are sequentially confirmed.

The present invention will be described in detail below with reference to the drawings.

First, FIG. 1 shows a schematic configuration of the remote monitoring and control device of the present invention. In the illustrated configuration, the center device CNT and each terminal device T-/, T-co, T-J, . . .

They are interconnected by a 3-wire line for supplying power and transmitting signals, and any number of terminal devices can be connected to the control unit CWT. By pressing the master key of the configuration as described below for the fifth prisoner.

Remote control from the center device CNT is possible.

Note that each terminal device can be connected to W. In theory, any number of terminal devices can be connected as described above, but there are restrictions on the number of channel number setting switches and the signal transmission speed, so in the illustrated example, 16 terminals can be connected. Parallel connection is possible up to

Signal transmission in the above configuration is performed by a time division multiplex transmission system as shown in FIG.

Although the configuration is the same as in the conventional configuration, the amount of data that can be transmitted is much larger in the illustrated example (especially for In order to automatically control the air conditioner number using the terminal device, etc., the amount of analog information such as the detected temperature of the temperature sensor connected to the terminal device is transmitted by analog-to-digital conversion, so the data is transmitted from the terminal device to the center device. The amount of sensor equipment &c in the configuration shown in the first diagram is large.
NT and each terminal device T-/, T-co, T-j,...
. . . Examples of the structure of data mutually transmitted between the two, that is, data from the center device to the terminal device and data from the terminal device to the center device, are shown in Figures 3 and (3), respectively.
5). In the illustrated example, the command and control data transmitted from the center device to the terminal device consist of 16 bits as shown in the third column. It should be noted that the information data transmitted from the terminal device to the center device consists of 3 bits with 5 contents as shown in FIG. 3(5). In addition, secondary data transmission, such as an interrupt transmission request from a terminal device where an accident requiring an alarm has occurred, or priority data transmission from the terminal device immediately after an operation such as a command to start/stop load equipment from the center station is performed. Transmission formats other than those shown in Figures 3 and 8 can also be used, and if more terminal devices are added in the future, the data transmission time can be extended.

Next, an example of the configuration of the terminal device in the remote monitoring and control device of the present invention is shown in Fig. 4. In the configuration shown in the figure, one circuit configuration is simplified, and various load units having various functions can be connected and controlled simultaneously to a single end device (a control system consisting of an inexpensive L-chip microcomputer is used). It is mainly composed of a microprocessor for analog/digital conversion of analog data such as WA anonymous sensors, and data processing for channel address setting switches.

Complex functions such as time division multiplex transmission can be provided at low cost using a circuit device with an extremely simple configuration. In other words, the control microprocessor is equipped with 3Ii! Power is supplied from the transmission circuit l via the stabilized power supply 3, and data is exchanged with the center device via the transmission/reception circuit l. Address setting switch to set the address 3. A load drive phase relay contact driven by a load drive relay tK via a detector 6 that generates various alarms and a transistor amplifier 7! , an analog-to-digital converter consisting of a comparator/co that supplies a reference value via a gauge digital-to-analog converter l//, and an analog sensor that sends out various amounts of analog information via θ. N and a terminal information switch/41' for setting special information from the terminal are connected as if they were both equipped with q and g.

The functions that can be performed by the circuit configuration as described above are as follows.

111 Control of starting and stopping of t load devices using one contact t of a load driving relay (2) Analog-to-digital conversion of analog data from the analog sensor 13 and input processing (3) Generation of two alarms (4) Input of terminal information switch 741F of terminal information switch 741F The various functions described above are performed using 5 VC as follows.
This is done by opening and closing the load drive relay contact D using the load drive relay L.

Function (2) is to convert the analog data of each woodcutter analog 7/s 13 into digital data via the analog/digital converter 10 consisting of a digital/analog converter//and a comparator 1 and send it to the control microprocessor. Functions (3) and (4) are performed by sending the contacts of the alarm generation detector 6 and the terminal information setting switch/4 (respectively) to the control microprocessor.

The setting of the channel number as the identification address of the terminal is carried out by setting 24-76 binary codes using the address setting switch j using on/off combinations of the switches.

In addition, in order to perform each of the above-mentioned functions (11 to (4)), the boat number of the microprocessor to which the components such as each load device are connected is assigned according to the function.
For example, if the boat number /~da is assigned to the off/off control of the drive phase relay t, it corresponds to the relay force X/~X4tK in the data shown in Figure 3, and the boat number s-g corresponds to the analog sensor /J The alarm datum l~ in the data shown in Fig. 3 @ is assigned to the alarm generation detector 6.
Furthermore, the boat numbers /J to /4 are assigned to the terminal information switch /+, and correspond to the boat C/-C4IK shown in FIG.

Next, FIG. 5 shows an example of the configuration and arrangement of the operation section of the center device in the remote monitoring and control device of the present invention.

In the illustrated configuration, operations for providing various functions of a simplified remote monitoring and control device, which is a feature of the present invention, are not divided into K units according to function as in conventional devices. For example, when using the operating section with the configuration shown in the figure in a general home, each terminal device is appropriately placed in each room and can be controlled remotely. Connect the desired loads such as lights and air conditioners, and also connect temperature sensors etc. to automatically control the air conditioners.Also, at the same time, an intruder detector.

Or fire detectors such as heat detectors or smoke detectors.

Connect a gas leak detector etc. as necessary. Furthermore, since a channel address must be determined for each terminal device, a channel number from 0 to 14 is assigned by a channel address setting switch provided in each terminal device.

Next, in the center device, that is, the central monitoring and control device, when the power is turned on and in terminal program mode, that is, communication is carried out to register in advance in the center device the functions of each device connected to each terminal device. In mode 1, for example, the terminal address field in the terminal call signal during normal communication with the configuration shown in FIG. After sending out the address bit string for terminal authentication, which consists of 4II bits and is sequentially assigned bit by bit to the total number of terminals that can be connected to the supervisory control line (1, for example, 6 terminals), an appropriate guard space is provided between each bit. Send.

Note that the sequential number assigned to each terminal device is q! r When connecting the line of the terminal device, other required data, i.e.
In advance, together with the identification address of each terminal device, data regarding the type 1 connection function, etc.

It shall be registered in the memory of the center device.

Therefore, each terminal device waits for the subsequent address bit string for terminal am to arrive in accordance with the identification code of the terminal WA recognition mode in the terminal paging signal of the sixth device described above, and waits for the arrival of the address bit string for the terminal am, In response to the reception of the address bit corresponding to the number of the own station, the address bit of the own station number is immediately transmitted according to the response method commonly used in this type of transmission line system, such as short-circuiting between the line connection terminals of the own station equipment. response bits are returned. In this way,
If the center device detects the presence or absence of successive response bits returned from each terminal device in response to the address bit string for terminal confirmation as shown in FIG. When transmission is finished, the reception of response bits from each terminal device has also been completed at the same time, and depending on the presence or absence of response bits from each terminal device, which terminal device is actually connected and is in operation? Therefore, the total number of terminal devices currently in operation can be checked extremely simply, easily and quickly, and the current situation can be grasped.

As is clear from the above description, according to the present invention, the total number and addresses of the terminal devices actually connected to the transmission line and in operation in the remote monitoring control system can be easily transmitted in the terminal program mode. Moreover, it only takes time to send out bit strings equivalent to the number of all stations to check whether all terminal devices are installed, and the current state of line connections can be grasped extremely quickly and easily.

[Brief explanation of the drawing]

#I1 is a block diagram showing the strategic configuration of the remote monitoring and control system of the present invention, FIG. 2 is a diagram showing an example of the seventh signal transmission mode, and FIG. The diagram showing the example of the W signal formation, @4 is the same (the block m diagram showing an example of the detailed configuration of the terminal device, and the plan view of FIG. 5 showing the example of the configuration and arrangement of the operation section of the center device) , FIG. 6 LAIN and (5) are diagrams showing an example of communication between the center device and the terminal device in the present invention. CNT...Center device. ?-/, T-2.T-J...・Terminal equipment. Bar j @ type transmission circuit, λ... Transmitting/receiving circuit. 3... Stabilized power supply. Tei... Control microprocessor. j-° Address setting switch, 6... Alarm detection 7... Transistor amplifier. t... Load driving relay. f... Load driving relay contact, IO... Analog-digital converter. //... Digital-analog converter, / 2...Comparator, 13...Analog sensor. Lda...Terminal information setting switch. TR...Transistor amplifier, IN, IN/~INhiro...Inverter. RL/~RLDA... Relay. CMP/~CMPda...Comparator. Sl~SII...Analog Senna. Coto...Lifestyle pattern program-7/pu. 2Co...Lifestyle pattern operation/pu.Co3...Life Pattern key. Koda... Terminal operation lamp. Top... Terminal display rung. 26... Terminal key. Koku River monitoring display lamp. , 2g... Digital display. Co9... Function display. Lamp. 30...Function key. 31...Numeric key, J2...Calculation key.

Claims (1)

[Claims] A center device and a plurality of terminal devices are each connected via a line, and at least one device connected to each terminal device is controlled by commands from the center device, and based on information from the device. In a remote monitoring and control device in which the device is monitored by the center device, the center device sends out a number of bit strings equal to the maximum number of terminals connectable to the line, following the sending of a signal notifying the terminal mwt. and by detecting the presence or absence of successive response bit returns from the plurality of terminal devices in response to the bit string, the center device sequentially connects the plurality of terminal devices to 11m1!! Features of remote monitoring and control equipment.