JPS59112123A - Remote controller - Google Patents

Abstract

PURPOSE:To permit two-way communication of data with outside with consumption of lesser amounts of electric power by a method in which a standby mode is provided to the main controller to judge signals from a connector and the swiching from the standby mode to unusal mode is made possible. CONSTITUTION:By a micro computer, after a standby mode is one set, the standby mode is kept until a trailing signal is put in a mode switching terminal 15. when the trailing signal is put in, the standby mode is changed to usual mode, the signal of the mode switching terminal 15 is judged, and if the signl is signal of ''00101'', for example, the signal is sent out to an interrupter 18 to close a solenoid valve 20. Also, if the signal is signal of ''00111'', data on flow rate are outputted to the connector 17 from the output terminal 16, whereby information of the consumed amounts of fuel, etc., is notified to outside through a transmission line connected to the terminal 22. A two-way type monitoring system consuming lesser amounts of electric power can be made up.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention This invention relates to a fluid control device that detects an abnormality in gas flow rate and cuts off gas supply.

The structure of the conventional example and its problems There is a shut-off device that detects the gas flow rate and determines abnormalities such as a large amount of gas continuing to flow without change for a long time to prevent gas explosions and gas suicide. This type of gas cutoff device has the configuration shown in Fig. 1. In this Fig. 1,
Reference numeral 1 denotes a flow rate sensor that is attached to the gas meter 2 and detects the flow rate of gas. This flow rate sensor 1 includes, for example, a magnet provided in a diaphragm constituting a gas meter 2 or a part of a link mechanism that transmits the reciprocating motion of the diaphragm to an indicator, and a reed switch that detects the position of the magnet. The gas flow rate can be determined by measuring the time until it turns on. 04 is a self-holding manual return type solenoid valve that combines a magnet and an electromagnetic coil installed in the gas flow path. The gas flow path is cut off by the cutoff signal. This electromagnetic valve 4 is designed to self-maintain in the open state by the force of a magnet, which reduces battery consumption as a power source for the device.In addition, the shutoff operation is performed by passing current through the electromagnetic coil. This is done by releasing the self-holding state as the resulting electromagnetic force overcomes the force of the magnet holding the valve open. Once it is cut off in this way, the power of the magnet alone will not work.
It is never open and no current needs to flow through it.

To open the valve, open it manually and use the magnet to hold it in place. The control unit 3 receives a signal from the flow rate sensor 1, processes this signal according to a predetermined processing procedure, determines whether or not to shut off, and if the shut-off conditions are satisfied, sends a shut-off signal to the solenoid valve 4. Output against. As a processing procedure, for example, it is determined whether the flow rate detected by the flow rate sensor 1 continues to flow at a constant value for a predetermined time period. If it exceeds the flow rate, the equipment corresponding to the flow rate has been used for a long time than the normal operating time, and such a state indicates some kind of abnormality, and a shutoff signal is output.

The disadvantage of such conventional devices is that they cannot be remotely shut off simultaneously from a center in the event of an earthquake, an entire region, or a fire. Furthermore, when the gas supply is shut off for some reason, the gas supply company cannot immediately know whether or not the shutoff occurred or the reason for the shutoff. There were drawbacks such as.

Purpose of the Invention The present invention detects an abnormality in the gas flow rate and cuts off the gas supply, and also functions as a terminal device such as an automatic meter reading device using subscriber telephone lines, and is capable of bidirectional monitoring with low power consumption. An object of the present invention is to provide a fluid control device that can configure a system.

Structure of the Invention In order to achieve this object, the fluid control device of the present invention includes:
It has a connection part that inputs signals from the outside and a main control part that judges the signal from this connection part.The main control part has a standby mode, and the signal from the connection part can switch from standby mode to normal mode. It is equipped with a possible mode switching terminal, and the signal from the connection part is input to this mode switching terminal. This configuration enables bidirectional data communication with the outside with low power consumption.

DESCRIPTION OF EMBODIMENTS An embodiment of the present invention will be described below with reference to FIG. Reference numeral 5 denotes a power supply section, which includes a battery 6. 7 is a sensor input section which has a reed switch 8 and sends a flow rate pulse to the input terminal of the main control section 11. 9 is a return signal input section, for example, a magnet is provided in the movable part of the solenoid valve, a reed switch is provided at a position where the solenoid valve is turned on when it is open and turned off when it is closed, and the on/off signal of this reed switch is the main control. The signal is sent to the input terminal of section 11. The main control unit 11 has a signal at the input terminal 14 that is “Hi”.
'', it can be recognized that the valve is in the closed state. 12 is a microcomputer with a standby mode, 16 is a mode switching terminal that inputs the signal from the connection part 17, and it detects the falling edge of the input voltage. Reference numeral 16 is an output terminal of the microcomputer 12 of the main control unit 11, which is connected to a connection part 17. Reference numeral 17 is a connection part, which is connected to an external transmission path via terminals 21 and 22. Reference numeral 18 denotes a cut-off section that includes a transistor 19 and a solenoid valve 20.

Next, the operation of the above configuration will be explained.

The microcomputer 12 is switched from normal mode to standby mode by software.

Here, the normal mode refers to a state in which the microcomputer 12 is operating normally, and all functions are in an operating state. In the standby mode of the microcomputer 12, most of its functions are considered to be in a stopped state, so its current consumption is reduced to about one-tenth of that in the normal mode. Once the microcomputer 12 enters the standby mode, it maintains the standby mode until a fall signal is input to its mode switching terminal 15, and returns to the normal mode when the microcomputer 12 is turned on. Therefore, when a predetermined signal is input from the terminal 21, the microcomputer 12 changes from the standby mode to the normal mode, and judges the signal at the mode switching terminal 15. is output, and the solenoid valve 20 is closed.

Also, the signal at the mode switching terminal 15 is determined and the signal is set to 00.
If the signal is 111", the output terminal 16 is connected to the connection part 17,
By outputting the flow rate data, information such as fuel consumption can be communicated to the outside via the transmission line connected to the terminal 22.

Effects of the Invention As described above, the fluid control device of the present invention provides the following effects.

1.A remote control function has been added to the conventional shutoff function, so it is possible to shut off specific areas all at once by operating from the center.

2. As a terminal for the automatic meter reading system, which is carried out over conventional subscriber telephone lines, fuel consumption can be transmitted to remote locations.

3. Immediate notification to the center is possible when the cut-off function of the cut-off device is activated.

4. Standby mode is used to reduce power consumption, so it can be achieved using battery power without sacrificing conventional performance.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of a conventional gas cutoff device, and FIG. 2 is a circuit diagram of a fluid control device according to an embodiment of the present invention. 5...Power supply section, 7...Sensor input section,
11... Main control section, 15... Release section (
mode switching terminal), 17... connection section, 18...
・・・・・・Shutoff part.

Claims (1)

[Claims] A power supply unit consisting of a battery, a sensor input unit into which a fuel flow rate signal is input, a main control unit which inputs the signal from the sensor unit and integrates the number of pulses, an external signal transmission path, and the main control unit. a connecting part that connects the main control part, a blocking part that cuts off the gas flow path in response to a signal from the main control part, and a part of the release part in "Kalpa 1" that releases the standby operation in response to a signal from the external signal transmission path. , a remote control device that determines a signal from the connection section and outputs a signal to either the cutoff section or the connection section.