JPH0965454A - Switch device with temperature sensor for remote supervisory control system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the convenience of use by sending an output signal to control a load to a transmission unit while being converted into a digital transmission signal so as to allow the signal difficult to receive the noise effect thereby reducing limitations on installation works. SOLUTION: A signal output section 4 of a switch device 1 with temperature sensor provides the output of an output signal to control a load for a cooler and a heater or the like based on a sensing temperature by a temperature sensor section 2 and a temperature setting value of a temperature setting section 3. A signal conversion means 5 uses a signal processing section 7 to convert the output signal of the signal output section 4 and address data of an address input section 6 into a digital transmission signal used for the remote supervisory control system and sends the signal to a transmission unit being a central controller via a signal line 16. The transmission unit controls a control terminal equipment based on the signal. Thus, the system is difficult to receive noise effect, limitations on installation works are reduced and the convenience of use is improved.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a switch device with a temperature sensor for a remote monitoring control system.

[0002]

2. Description of the Related Art Conventionally, as a remote monitoring control system,
There is one as disclosed in Japanese Patent Laid-Open No. 3-166899. This includes a transmission unit as a central control device, an operation terminal device that generates operation data based on an operation, and a control terminal device that controls the operation of a load including an electric device.
Connected via a wire-type signal line, the transmission unit transmits a transmission signal including address data specifying each terminal in time division, accesses each terminal individually, and monitors the operation data, The load operation is controlled according to the operation data.

The transmission signal Vs transmitted from the transmission unit to the signal line is, as shown in FIG. 9, a start pulse signal ST indicating the start of signal transmission, a mode data signal MD indicating the signal mode, and 8 bits for calling each terminal. Of the address data signal AD for transmitting the address data, the control data signal CD for transmitting the control data for controlling the load, the checksum data signal CS, and the return standby signal WT for setting the return period from each terminal device. It is a (± 24 V) time division multiplexed signal, and data is transmitted by pulse width modulation. In each terminal, when the address data of the transmission signal Vs received through the signal line and its own unique address data match, the transmission signal Vs
The control data of s is fetched, and the operation data signal is returned as a current mode signal by making the signal lines short-circuited in synchronization with the return standby signal WT of the transmission signal Vs.

Further, when the transmission unit receives the dummy signal transmitting means for constantly transmitting the dummy transmission signal in which the mode data signal MD is set to the dummy mode, and the interrupt pulse Vi returned from any one of the terminals, An interrupt processing unit for detecting an interrupt-generating terminal device, accessing the terminal device, and returning operation data is provided.
Furthermore, in the transmission unit, based on the operation data returned from each terminal device to the transmission unit as described above,
The control data to be transmitted to the control terminal device that controls the corresponding load is created, and the control data is time-division multiplexed to the control terminal device through a signal line to control the load. .

On the other hand, there is a switch device with a temperature sensor as a device for controlling a load according to a temperature such as room temperature in a remote monitoring control system. This switch device with a temperature sensor controls a load based on a temperature sensor unit that detects a temperature, a temperature setting unit that sets a predetermined reference temperature, and a temperature set value of the temperature setting unit and a detection signal of the temperature sensor unit. And a signal output unit that outputs an output signal, and is connected to the above-described signal line via a contact input terminal device described later. The signal output unit of this switch device with temperature sensor is
It has a non-voltage contact such as a relay that opens and closes.
The contact input terminal device receives the output signal indicating the state of the contact, converts the output signal into a transmission signal, and transmits the transmission signal to the transmission unit. Further, this contact input terminal has an address input section for inputting address data, and the transmission unit specifies the contact input terminal, that is, the switch device with temperature sensor based on the address data.

[0006]

The switch device with the temperature sensor of the remote monitoring and control system described above is convenient because it can control the load in accordance with the temperature such as room temperature. However, since the signal output unit is a non-voltage contact output, if the wiring length connecting the signal output unit and the contact input terminal becomes long, it becomes susceptible to noise, so the wiring length can be made too long. However, it may be a limitation in constructing a remote monitoring and control system.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a switch device with a temperature sensor for a remote monitoring control system which is further improved in usability.

[0008]

In order to solve the above-mentioned problems, a switch device with a temperature sensor of a remote monitoring control system according to claim 1 is a control unit for controlling the operation of a transmission unit as a central control device and a load. The terminal for use is connected via a two-wire signal line, and the transmission unit transmits a transmission signal including address data specifying each terminal in a time-sharing manner so that each terminal can be individually accessed and loaded. Which is used in a remote monitoring control system for controlling the operation of a temperature sensor unit for detecting a temperature, a temperature setting unit for setting a predetermined reference temperature, a temperature set value of the temperature setting unit, and a temperature sensor. In a switch device with a temperature sensor having a signal output section for outputting an output signal for controlling a load based on a detection signal of the section, the output signal of the signal output section is converted into a transmission signal, and a transmission unit. It has a configuration in which a signal conversion means for transmitting the bets.

According to a second aspect of the present invention, in the switch device with temperature sensor of the remote monitoring and control system, the signal converting means according to the first aspect is provided with a signal processing section for converting an output signal into a digital transmission signal. There is.

According to a third aspect of the present invention, in the switch device with temperature sensor of the remote monitoring and control system, the signal converting means according to the first or second aspect is provided with an address input section for inputting address data.

According to a fourth aspect of the present invention, in the switch device with a temperature sensor of the remote monitoring and control system, the temperature setting section according to the first to third aspects is provided with a liquid crystal display for displaying a predetermined temperature.

According to a fifth aspect of the present invention, in the switch device with temperature sensor of the remote monitoring and control system, the address input section according to the first to fourth aspects is provided with a liquid crystal display for displaying address data.

[0013]

DETAILED DESCRIPTION OF THE INVENTION A first embodiment of the present invention will be described below with reference to FIGS. FIG. 1 is a block diagram of a switch device 1 with a temperature sensor of a remote monitoring and control system. The switch device 1 with a temperature sensor includes a temperature sensor unit.
2, temperature setting unit 3, signal output unit 4, and signal conversion means 5
Are the main constituent members.

The temperature sensor unit 2 detects the temperature and is formed by a sensor such as a thermistor. And
The temperature sensor unit 2 sends an analog detection signal corresponding to the detected temperature to a signal output unit 4 described later.

The temperature setting unit 3 sets a predetermined reference temperature and has a variable resistor, and the resistance value of the variable resistor can be changed by rotating the knob 3a.
This resistance value corresponds to the temperature, for example, 10 to 3
The predetermined temperature can be set within the range of 5 ° C.
Then, the temperature set value is transmitted to the signal output unit 4 described later.

The signal output unit 4 outputs an output signal for controlling a load of electric equipment or the like based on the temperature set value of the temperature setting unit 3 and the detection signal of the temperature sensor unit 2. Specifically, this signal output unit 4 has a cooling / heating switch 4a,
When the cooling / heating switch 4a is set to heating, when a detection signal of a temperature lower than the temperature set value is input, when an output signal consisting of an H signal is input, and when a detection signal of a temperature higher than the temperature set value is input , L signals are output to the signal conversion means 5 described later. Also, the cooling / heating switch
When 4a is in the air conditioner, when a detection signal with a temperature higher than the temperature setting value is input, an output signal consisting of an H signal is output, and when a detection signal with a temperature lower than the temperature setting value is input, an L signal is input. And outputs the output signal consisting of to the signal conversion means 5.

The signal conversion means 5 converts the output signal of the signal output section 4 into a transmission signal used in the remote monitoring control system and transmits it to a transmission unit which will be described later. The address input section 6 and the signal processing section 7 , A signal transmission / reception unit 8 and a power supply circuit unit 9.

The address input section 6 is for inputting address data for the transmission unit, which will be described later, to identify the temperature sensor-equipped switch device 1.
It has an optical signal receiving part which receives an optical signal. The optical signal receiving unit is a member different from the temperature sensor-equipped switch device 1, and is an address setter that transmits address data as an optical signal, and by inputting predetermined address data, the address data becomes an optical signal. Then, it is wirelessly input to the optical signal receiving unit of the address input unit 6. And
The address input unit 6 receives the address data composed of the optical signal and sends it to the signal processing unit 7 described later.

The signal processing section 7 converts the output signal of the signal output section 4 and the address data of the address input section 7 into a digital transmission signal. Specifically, this transmission signal includes a signal for ON-controlling the load when, for example, the cooling / heating switch 4a is in the heating state and the output signal changes from the L signal to the H signal. When the signal changes from the H signal to the L signal, a signal for controlling the load to be turned off is included. The transmission signal converted by this signal processing unit 7 is
It is transmitted to the signal transmission / reception unit 8 described later.

The signal transmitting / receiving unit 8 transmits / receives a transmission signal to / from the transmission unit. The power supply circuit section 9 is the signal processing section 7
Also, power is supplied to the signal output unit 4 and the like.

Next, other main components of the remote monitoring control system will be described with reference to FIG. Reference numeral 11 denotes a transmission unit, which functions as a central control unit and transmits / receives a pulse width modulated transmission signal having address data, control data, etc. by time division multiplex transmission. Then, by individually accessing the temperature sensor switch device 1 and each terminal device described later, the load operation control is performed.

An operation terminal 12 generates operation data based on an operation and transmits / receives a transmission signal to / from the transmission unit 11. Reference numeral 13 denotes a control terminal device, which transmits and receives a transmission signal to and from the transmission unit 11 to control the operation of a load including an electric device. The control terminal device 13 has relays 14 and 14 and a relay control unit 15, and although not shown, the load is a relay.
Connected to 14,14. Further, each terminal device 12, 13 is assigned its own unique address data so that the transmission unit 11 can identify each terminal device 12, 13.

Reference numeral 16 is a signal line, which is a switch device with a temperature sensor.
1, a two-wire type that connects the transmission unit 11 and the terminals 12 and 13. 17 is a transformer and 18 is a power line.

Next, the operation of the switch device with temperature sensor will be described with reference to FIG. First, as an initial setting, the address input unit 6
Enter the address data of 1. Then, at the stage of actual use, the cooling / heating switch 4a of the signal output unit 4 is set to, for example, the heating side, and the knob 3a of the temperature setting unit 3 is set.
To set the temperature at which you want to control the load. In such a situation, the signal output unit 4 compares the detection signal from the temperature sensor unit 2 with the temperature setting value of the temperature setting unit 3, and when the temperature is lower than the temperature setting value, the H signal is output, and when the temperature setting value is higher than the temperature setting value. Sends the L signal to the signal processing section 7 of the signal converting means 5.

The signal processing unit 7 detects an output signal composed of an H signal or an L signal, and when the signal is changed, for example, when the L signal is changed to an H signal, the signal is turned on together with a signal for controlling the load. , Generates a transmission signal including address data, and transmits the transmission signal to the transmission unit 11. The transmission unit 11 receives the transmission signal and transmits the transmission signal to the control terminal device 13 to control the load to be turned on. Further, when the temperature rises and changes from the H signal to the L signal, the signal processing unit 7 operates so as to control the load to be off,
As a result, the load is turned off.

FIG. 4 is an example of a time chart of the switch device 1 with a temperature sensor, in which a transmission signal for ON control is transmitted when the temperature falls below a temperature set value, and a transmission signal for OFF control is transmitted when the temperature rises above the temperature set value. I understand.

This switch device 1 with a temperature sensor is a transmission unit that converts an output signal for controlling a load into a transmission signal.
Since it is sent to 11, it is less susceptible to noise and there are fewer restrictions on construction, improving usability.

Next, a second embodiment of the present invention will be described with reference to FIG. This is different from the first embodiment in how to use the temperature sensor-equipped switch device 1 in the remote monitoring control system, and the configuration of the temperature sensor-equipped switch device 1 is the same as that of the first embodiment. .

Reference numeral 21 is a second load and has a built-in HA terminal. A connection unit 22 connects the second load 21 and a second terminal device 23 described later. A second terminal 23 is connected to the signal line 16 to send and receive a transmission signal and controls the second load 21. A connection cable 24 connects the second load 21 and the connection unit 22.

This is a second load 21 having an HA terminal.
The temperature sensor switch device 1 can be directly controlled, which improves usability and convenience.

Next, a third embodiment of the present invention will be described with reference to FIGS. 6 and 7. The configuration of the temperature sensor switch device 1 is slightly different from that of the first embodiment, and a liquid crystal display 31 and an address switch 41 are added, and the knob 3a of the temperature setting unit 3 is not necessary.

The liquid crystal display 31 is a liquid crystal screen for setting the temperature in the temperature setting section 3 and for inputting address data in the address input section 6. In particular,
In a normal state, as shown in FIG. 6A, the temperature setting screen is displayed, and the temperature display section 32, the first switch 33, and the second switch 34 are displayed. The temperature display unit 32 displays the predetermined temperature in the temperature setting unit 3. The first switch 33 changes a predetermined temperature, and the predetermined temperature rises or falls when operated. The second switch 34 forces the load to O.
The signal processing unit is turned on and off.
A transmission signal for ON control or OFF control is transmitted from the signal transmitting / receiving unit 8 via 7.

By operating an address switch described later, a screen for inputting address data is displayed as shown in FIG. 6 (b). In this screen, the third switch
35 and the fourth switch 37 are displayed. The third switch 35 is
By operating the switch for confirming the address data, it becomes the address data display section 36 for displaying the address data as shown in FIG. 6C.

The fourth switch 37 is for inputting address data, and when it is operated, it becomes an address data input section 38 for inputting address data as shown in FIG. 6D. Reference numerals 39, 39 ... Are input switches, and by operating the address data, the second address data display section 40 is displayed.

The address switch 41 switches the liquid crystal display 31 to a screen for inputting address data, and when operated, switches to a screen for inputting address data or a screen for setting temperature.

In this device, the predetermined temperature serving as a reference is displayed on the liquid crystal display 31, so that the predetermined temperature is easily recognized, setting mistakes are reduced, and reliability is improved.
Since the address data is also displayed on the liquid crystal display 31, the address data can be easily recognized and the reliability is further improved. Further, an address setter, which is a separate member for setting the address data, for transmitting the address data as an optical signal becomes unnecessary.

Next, a fourth embodiment of the present invention will be described with reference to FIG. This is different from the third embodiment in the use of the temperature sensor-equipped switch device 1 in the remote monitoring control system.
The configuration of 1 is the same as that of the third embodiment, and the system configuration of the remote monitoring control system is the same as that of the second embodiment.

This one also has a second load 21 having an HA terminal.
The temperature sensor switch device 1 can be directly controlled, which improves usability and convenience.

In the description of the operation of the first embodiment, the case of heating is described, but the same applies to the case of cooling. Further, although the liquid crystal display is configured to be capable of both the temperature setting in the temperature setting section and the input of the address data in the address input section, it may have only one function.

[0040]

The temperature sensor switch device of the remote monitoring and control system according to claim 1 converts the output signal for controlling the load into a transmission signal and transmits the transmission signal to the transmission unit. As the above restrictions are reduced, usability is further improved.

In addition to the effect of claim 1, the switch device with temperature sensor of the remote monitoring and control system according to claim 2 is further affected by noise because the output signal is converted into a digital transmission signal. It becomes difficult and reliability is improved.

Further, in addition to the effect of claim 1 or 2, the switch device with temperature sensor of the remote monitoring and control system according to claim 3 is compact as a whole because it can input address data without having another device. Can be realized. In addition to the effect of any one of claims 1 to 3, the temperature monitoring switch device of the remote monitoring and control system according to claim 4 displays a predetermined reference temperature on the liquid crystal display, and therefore the predetermined temperature is displayed. The temperature can be easily recognized, setting errors are reduced, and reliability is further improved.

In addition to the effect of any one of claims 1 to 4, the temperature monitoring switch device of the remote monitoring and control system according to claim 5 has the address data displayed on the liquid crystal display. The data can be easily recognized, setting errors are reduced, and reliability is further improved.

[Brief description of drawings]

FIG. 1 is a block diagram of a switch device with a temperature sensor of a remote monitoring control system according to a first embodiment of the present invention.

FIG. 2 is a system diagram of the remote monitoring control system.

FIG. 3 is a flowchart of the switch device with the temperature sensor.

FIG. 4 is an example of a time chart of the switch device with the temperature sensor.

FIG. 5 is a system diagram of a remote monitoring and control system showing a second embodiment of the present invention.

FIG. 6 is a front view of a temperature sensor-equipped switch device of a remote monitoring and control system according to a third embodiment of the present invention.

FIG. 7 is a system diagram of the remote monitoring control system.

FIG. 8 is a system diagram of a remote monitoring control system showing a fourth embodiment of the present invention.

FIG. 9 is a signal diagram of transmission signals of the present invention and the conventional remote monitoring control system.

[Explanation of symbols]

 1 Switch device with temperature sensor 2 Temperature sensor section 3 Temperature setting section 4 Signal output section 5 Signal conversion means 6 Address input section 7 Signal processing section 8 Signal transmission / reception section 9 Power supply circuit section 11 Transmission unit 12 Operating terminal 13 Control terminal Device 16 Signal line 21 Second load 31 Liquid crystal display 41 Address switch

Claims (5)

[Claims] 1. Address data for connecting a transmission unit as a central control unit and a control terminal device for controlling the operation of a load via a two-wire signal line, and the transmission unit specifying each terminal device. It is used in a remote monitoring and control system that transmits a transmission signal including a time division signal to access each terminal individually to control the operation of the load. In a switch device with a temperature sensor, comprising: a temperature setting unit that sets a predetermined temperature; and a signal output unit that outputs an output signal that controls a load based on a temperature set value of the temperature setting unit and a detection signal of the temperature sensor unit, A switch device with a temperature sensor for a remote monitoring and control system, comprising signal conversion means for converting an output signal of the signal output unit into a transmission signal and transmitting the transmission signal to a transmission unit. 2. The switch device with a temperature sensor according to claim 1, wherein the signal converting means is provided with a signal processing section for converting an output signal into a digital transmission signal. 3. The switch device with a temperature sensor for a remote monitoring control system according to claim 1, wherein the signal converting means is provided with an address input section for inputting address data. 4. The liquid crystal display for displaying a predetermined temperature is provided in the temperature setting unit.
A switch device with a temperature sensor for the remote monitoring and control system described. 5. A switch device with a temperature sensor for a remote monitoring control system according to claim 1, wherein the address input section is provided with a liquid crystal display for displaying address data.