JPH05297986A - Centralized control equipment for on-line terminal power source - Google Patents

Abstract

PURPOSE:To prevent a main power source from always being operated, to save a power, and to extend the service lives of an electrical system and a display by using a telephone line connecting a central processing unit to each terminal as it is, designating an arbitrary terminal, and controlling the power source of the terminal. CONSTITUTION:When a command is outputted from a HST CPU 1, it is modulated to a signal capable of being transmitted by using the telephone line by a modem 2a, and it is transmitted to a modem 2b via the telephone line 3. After the signal is demodulated by the modem 2b, it is transmitted to main control equipment 5, and also, terminal control equipment 7 is set in an operating state. The main control equipment 5 inputs the signal transmitted from a monitoring device, and also, switches a switch SW to a transmitter 6 side. The transmitter 6 inputs the signal transmitted from the main control equipment 5, and transmits a prescribed signal to a receiver 9, which operates the terminal equipment 8. Thereby, a data link can be established, and communication from the HST CPU 1 to each terminal equipment can be performed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement of a device for centrally controlling the power supply of a terminal device in an online system connected by a telephone line.

[0002]

2. Description of the Related Art There is a method and apparatus proposed by the applicant of the present invention for centrally controlling the power supply of a terminal device in the above online system. When a communication control unit is provided between the modem and one terminal device, the communication control unit analyzes the command from the host computer output from the modem to the terminal device, and when a certain signal is included. For turning on / off the power of the terminal device only in the case
2-25341) and a dedicated computer connected as a terminal device dedicated control device by a line different from the online line on the host computer side (Japanese Patent Application No.
11058).

[0003]

In the above method, control of a plurality of terminal devices is not taken into consideration, so that an online network in which a plurality of terminal devices are connected to one communication line (cluster connection) is used. In the form, the power supply of each terminal device cannot be controlled individually. Further, in the above-mentioned device, since a line different from the online line is used, it is difficult to synchronize with the online system, resulting in cost increase.
Moreover, the dedicated computer must be operated separately from the host computer.

[0004]

The present invention is a further improvement of the above-mentioned conventional invention, and freely controls the power source of any terminal device among a plurality of terminal devices connected to one communication line. It is possible. That is, the configuration is connected between the modulation / demodulation device on the terminal device side and the terminal device, and the terminal control signal of the specified terminal device is extracted by inputting the signal output from the central processing unit, The monitoring means for outputting the first terminal control signal corresponding to the extracted terminal control signal to the main control means of the next stage, and the first terminal control signal output from this monitoring means are input, and the input The main control means for outputting the first terminal control signal as the second terminal control signal to the transmitting means in the next stage corresponding to the first terminal control signal, and the second control means for outputting the second terminal control signal. Of the input terminal control signal, the input second terminal control signal, the transmitting means for outputting as a third terminal control signal to the receiving means of the next stage corresponding to the second terminal control signal,
The third terminal control signal output from the transmitting means is input, and the receiving means controls the power supply of the terminal device.

[0005]

The monitoring means connected between the modulation / demodulation device on the terminal unit side and the terminal unit inputs the signal output from the central processing unit and extracts the terminal control signal of the designated terminal unit. The first terminal control signal corresponding to the extracted terminal control signal is output to the main control unit in the next stage. The main control means inputs the first terminal control signal output from the monitoring means, and inputs the input first terminal control signal to the transmitting means of the next stage corresponding to the first terminal control signal. Output as the second terminal control signal. The transmission means inputs the second terminal control signal output from the main control means,
The input second terminal control signal is output as a third terminal control signal to the receiving means in the next stage corresponding to the second terminal control signal. The receiving means inputs the third terminal control signal output from the transmitting means, and controls the power supply of the terminal device to be in the rising state or the cutoff state. Therefore, the telephone line connecting the central processing unit and each terminal can be used as it is, and any terminal device can be designated.
Its power supply can be controlled.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is an explanatory diagram of a centralized control device for an online terminal power supply according to the present invention, and FIGS. 3 to 6 are explanatory diagrams showing an embodiment of each means. The present invention will be described below with reference to these drawings. As shown in FIG. 1, a host computer (hereinafter referred to as HST.CPU) 1 which is an example of a central processing unit is connected to a plurality of terminal devices 8, 8 ...
Are cluster-connected and an online system is configured. Reference numeral 2a is a modulation / demodulation device (hereinafter referred to as a modem) that performs modulation / demodulation for converting a signal output from the HST.CPU into a signal that can be transmitted using the telephone line 3. 4 is
A monitor device, which is an example of a monitoring unit, has a circuit configuration shown in FIG. 3 and transmits a signal corresponding to a signal transmitted from the modem 2b to a main control device 5, which is an example of the main control unit, and performs terminal control. Activate the device 7. The main controller 5 has the circuit configuration shown in FIG. 4, receives a signal transmitted from the monitor device, switches the switch SW to the transmitter 6 side which is an example of a transmitter, and transmits the input signal to the transmitter. It works to send to 6. The transmitter 6 is shown in FIG.
It has a circuit configuration shown in FIG. 3 and has a function of inputting a signal transmitted from the main control device 5 and wirelessly transmitting a predetermined signal to a receiving device 9 which is an example of receiving means. The receiving device 9 is shown in FIG.
It has a circuit configuration shown in FIG. 3 and receives the signal transmitted from the transmission device 6 and operates the terminal device 8.

Next, the signal flow including the terminal control signal is output from the HST.CPU 1 and the flow of the signal until the power supply of a predetermined terminal device is controlled and the operation of each means are shown in the flowchart of FIG. 7 and FIG. ~ It demonstrates based on the explanatory view of FIG. HST.CP
When the command is output from U 1, the command is modulated by the modem 2a into a signal that can be transmitted using the telephone line, and transmitted to the modem 2b via the telephone line 3. Then, after being demodulated into a predetermined signal in the modem 2b,
Input to the monitor device 4 via the RS-232C communication line. The signal input to the monitor device 4 is converted into a constant signal by the driver circuit 16a in the monitor device, and then output to the serial interface circuit 15a at the next stage and converted into a predetermined digital signal. The converted digital signal is output to the control circuit 11a, and R
The control circuit 11 performs a comparison operation with the data corresponding to the polling command stored in the OM 12a, and when the input signal is determined to be the polling command.
A predetermined digital signal is output from a to the parallel interface circuit 20b, and is converted into a constant signal by the driver circuit 16c. The relay circuit 18 operates by receiving the signal output from the driver circuit 16c, the power circuit 17a operates, and the output outlet 18a operates.
The power source of the terminal control device 7 connected to the power source is turned on, and the terminal control device 7 is activated. It should be noted that reset circuits 14a to 14d for initializing the devices are connected to the control circuits of the respective devices, and the dip switches 21a and 21d are connected to the monitor device via the parallel interface circuit 20a.
21b is connected to the main control device. Further, test switches 23a, 23b, and 23c are connected to the main controller, transmitter, and receiver, and a continuous transmission switch 23d and an AUTO / MANUAL selector switch are connected to the receiver.

Next, the HST.CPU 1 outputs an ACT command (hereinafter referred to as an operation signal) which is an example of a terminal control signal for causing a predetermined terminal device to operate. This activation signal contains the IDs of one or more terminal devices trying to communicate.
It includes data such as codes. The operation signal is input to the monitor device 4 and, after undergoing the same conversion as described above, the control circuit 11a.
In (1), it is converted into digital data, error checking is performed, and it is judged whether or not the input operation signal is a normal operation signal. When it is determined that the signal is a normal operation signal, the data is stored in the RAM 13a and is output to the serial interface circuit 15a. Next, it is converted into a constant signal in the driver circuit 16a, and is output to the main controller 5 of the next stage as a first operation signal which is an example of a first terminal control signal by the RS485 communication line. On the other hand, if it is determined that the signal is not a normal operation signal, the data is cleared and the next data sent is monitored.

The first operation signal input to the main control unit is converted into a constant signal in the driver circuit 16e and converted into predetermined digital data in the control circuit 11b, and then an error check is performed and input. It is determined whether the generated first actuation signal is a regular first actuation signal. Then, when it is determined that the signal is the normal first operation signal, the data is stored in the RAM 13b, and
After being converted into a constant signal in the driver circuit 16e, as a second operation signal which is an example of the second control signal
It is output to the transmitter 6 via the RS485 communication line. On the other hand, when it is determined that the signal is not the regular first operation signal,
LED output 2 via the driver circuit 16f
It is output to 2b and an error is displayed by a predetermined LED. At this time, the relay control circuit SW is activated by a predetermined signal output from the main control device, and switches the output side of the RS485 communication line to the input side of the transmission device 6.

The second actuation signal input to the transmitter is
After being converted into predetermined digital data by the serial interface circuit 15b, an error check is performed to determine whether or not the input second actuation signal is a regular second actuation signal. When it is determined that the signal is the normal second operation signal, the data is stored in the RAM 13c and is output to the modulation / demodulation circuit 26a. Then, after being modulated into a predetermined signal by the modulation / demodulation circuit, the signal is output to the specific low power radio unit 25a and is wirelessly transmitted to the designated receiving device 9 as a third operation signal which is an example of a third terminal control signal. Sent by.

The third operation signal received by the receiving device 9 is output to the control circuit 11d after being subjected to predetermined demodulation by the modulation / demodulation circuit 26b via the specific low power radio unit 25b, and converted into predetermined digital data. To be converted. And
ID code included in this data and ID RO beforehand
When the ID code stored in M is compared with each other and it is determined that both codes match, a certain signal is output from the control circuit to the photocoupler 29. Then, the photocoupler operates, a constant signal is output to the driver circuit 16h, and after being converted into a constant signal, it is output to the relay output 30, and at the same time, the relay circuits 18b and 18c operate to output the output outlet 1 and Power is supplied to the terminal devices connected to each of the two, and each terminal device becomes in an operating state.
At this time, the LED output 22 is simultaneously output from the driver circuit 16h.
A constant signal is also output to d, and LED display such as OUT PUT is displayed.

The data link is established as described above, and communication from the HST.CPU to each terminal device becomes possible.
Predetermined communication data is output from the T.CPU via the monitor device 4 and the terminal control device 7 to the terminal device to which the power is supplied, and online business is started.

Then, when the online business is completed, HS
The DISC command, that is, the operation stop signal is transmitted from the T.CPU 1 to the monitor device 4, and thereafter, the operation stop signal is transmitted from the transmitter device 6 to each of the receiver devices through the same route as in the case of the operation signal. The power supply to the terminal device in the state is stopped. As described above, in a cluster-connected online system, it is possible to select only a terminal device that needs data transmission and control its power supply.
In addition, since a data link is established as a prerequisite for data transmission, synchronization between data communication and communication for power supply control is not lost.

FIG. 2 shows a modified embodiment of the centralized control unit for the online terminal power supply of the present invention. Reference numeral 10 denotes a terminal control computer, which is connected to the external communication port of the main control device 5 and executes a predetermined program to control the power supply of only the required terminal device as in the above embodiment.

In each of the above embodiments, the number of transmitting devices can be increased or decreased according to the number of groups that manage the terminal devices. Further, the number of power supply circuits in the receiving device can be changed according to the number of connected terminal devices. Further, the LEDs provided in each device can be changed appropriately according to the specifications.

[0016]

By using the centralized control unit for an online terminal power supply of the present invention, it is not necessary to always turn on the main power supply, and therefore data communication can be performed at night when the power charge is low. In addition to the effect of saving power and extending the life of the electric system and display inside the terminal device, a dedicated line for power supply control is not required, and only the terminal device that requires transmission is selected and its power supply is selected. Can be controlled, so that the effect can be further enhanced. As described above, according to the present invention, the operating rate of the online system can be improved and the cost can be reduced.

[Brief description of drawings]

FIG. 1 is an explanatory diagram of a centralized control device for an online terminal power supply according to the present invention.

FIG. 2 is a modification of the centralized control device for the online terminal power supply of the present invention.

FIG. 3 is a circuit configuration diagram of a monitor device.

FIG. 4 is a circuit configuration diagram of a main control device.

FIG. 5 is a circuit configuration diagram of a transmission device.

FIG. 6 is a circuit configuration diagram of a receiving device.

FIG. 7 is a flowchart showing the operation of the present invention.

[Explanation of symbols]

1 .. Host computer, 2a, 2b .. Modem,
3 ・ ・ Telephone line, 4 ・ ・ Monitor device, 5 ・ ・ Main control device, 6 ・ ・ Transmission device, 6a, 9a ・ ・ Antenna, 7 ・ ・
Terminal control device, 8 ... Terminal device, 9 ... Receiving device, 10
..Computers for controlling terminals, 11a to 11d ... Control circuits, 12a to 12d ... ROM, 13a to 13d.
.RAM, 14a to 14d ... Reset circuit, 15a,
15b ... Serial interface circuit, 16a-1
6h ··· driver circuit, 17a to 17e ··· power supply circuit,
18a, 18b, 18c ... Relay circuit, 19a-19
e .. clock circuit, 20a to 20c .. parallel interface circuit, 21a to 21f .. dip switch, 22a to 22d .. LED output, 23a to 23c.
・ Test switch, 23d ・ ・ Switch for continuous transmission, 2
3e ... Auto / manual switch, 24 ... Counter circuit, 25a, 25b ... Specific low power radio, 2
6a, 26b ... Modulation / demodulation circuit, 27a, 27b ... ID
ROM, 28 ... Buffer circuit, 29 ... Photo coupler, 30 ... Relay output, SW ... Relay control circuit

Claims (1)

[Claims] 1. An online system in which a central processing unit and each of a plurality of terminal devices are connected by a telephone line via a modulation / demodulation device, which is a device for centrally controlling power supplies of the plurality of terminal devices. Connected between the modulation / demodulation device and the terminal device, the signal output from the central processing unit is input to extract the terminal control signal of the specified terminal device, and the first control signal corresponding to the extracted terminal control signal is extracted. Monitoring means for outputting one terminal control signal to the main control means of the next stage, and a first terminal control signal output from this monitoring means are input, and the input first terminal control signal is Main control means for outputting as a second terminal control signal to the transmitting means of the next stage corresponding to one terminal control signal, and second terminal control signal output from this main control means are inputted and inputted. second Transmitting a terminal control signal to the receiving means at the next stage corresponding to the second terminal control signal as a third terminal control signal, and inputting a third terminal control signal output from the transmitting means And a receiving means for controlling the power supply of the terminal device, the centralized control device for the online terminal power supply.