JPS58182391A - Remote control device - Google Patents

Abstract

PURPOSE:To recognize the state of a device without going to installating place of the device main body, by transmitting a state detection signal obtained at the device main body to a remote control section and discriminating failures for the purpose of display. CONSTITUTION:A state signal of the device mainbody 1 is inputted to an analog multiplexer circuit (AMPX) 14 of a device control circuit 2, and given to a comparison circuit 15. An output of a D/A convertion circuit 16 is a reference voltage to the state signal. A latch circuit 17 latches an output of a shift register circuit 18 with a strobe signal. The latch circuit 17 outputs a reference level signal 17a inputted to the circuit 16, a channel selection signal 17b to select the input channel of the circuit 14 and a heat source control signal 17c given to a driver circuit 19. Signals are transmitted to the circuit 18 via signal lines 5a, 5b from a microcomputer 22 in a remote control section 4. The signal 17a given to the circuit 16 is decided definitely at each input signal selected at the circuit 14. Each signal is detected to each reference voltage.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a remote control device for remotely controlling a device main body, and in particular, when an abnormality occurs on the device main body side, it is possible to promptly and accurately notify the user of the abnormality. The aim is to realize a remote control circuit with a simple configuration and at low cost, and to apply it to the remote control of household boilers, water heaters, etc.

In general, boilers, water heaters, etc. for home use are installed outside the home or in a mechanical room of the home, and there is inevitably a need for remote control from a living room such as the kitchen. There is.

By the way, as in the past, the main body of the device and the place where the user actually operates the equipment are far apart, so even if some kind of abnormality occurs on the main body of the device, the user in the room can immediately take care of it. This made it difficult to take immediate action as the patient was unable to notice the abnormality. Further, even if a service person were to find and repair this abnormality, it would require a great deal of effort.

In view of these points, the present invention aims to provide a remote control circuit with a simple configuration and at low cost that can automatically detect an abnormality occurring on the device main body side and notify the user of the contents. The purpose is to

The present invention will be described in detail below based on the drawings.

FIG. 1 is a block diagram showing the basic configuration of the present invention. 1
2 is a device main body such as a boiler, and 2 is a device-side control means connected to the device main body 1.

The device-side control means 2 also includes a state detection means 3 for detecting the state of the device body 1, such as a thermistor attached to the device body 1, for example.

Reference numeral 4 denotes a remote control section, which is connected to the device-side control means 2 via a signal transmission line 5. The remote control unit control means 6 includes:
It performs input processing from the input means 9 consisting of keys, keys, etc., and signal transmission processing with the device-side control means 2.

Further, the abnormality determination means 7 receives a signal transmitted from the equipment side control means 2. An abnormality in the device main body 1 is detected from a signal indicating the state of the device main body 1, and when an abnormality is detected, the content can be notified to the user by the abnormality notification means 8.

The abnormality notification means 8 may be a lamp display such as an LED, a display device such as a character display, a buzzer, a voice synthesizer, or the like.

FIG. 2 is a block diagram showing a circuit configuration when the present invention is applied to a boiler. 1o is a tank, and 11 is a part of a heat source. On the wall of the tank 10 is a thermistor 12 for measuring the temperature of the water inside the tank.

6 l-: 12b and 120 are attached. 13 is tank 10
These are thermistors 124 to 12C1 empty tank detector 1, which are empty tank detectors that detect whether there is water (hot water) in the tank.
A signal indicating the status of the device main body 1 such as 3 is sent to the analog multiplexer circuit 14 (AM
PX), and only the selected channel is output from there and applied to one input terminal of the comparison circuit 16.

Reference numeral 16 denotes a D-me conversion circuit which, when a certain digital value is input, outputs a voltage at a level corresponding to it. The output of the D-me conversion circuit 16 is given to the other input terminal of the comparison circuit 16, and serves as a reference voltage (comparison voltage) for the signal output from the analog multiplexer circuit 14.
becomes. The comparison circuit 15 outputs a logic level of "0" or "1" to the comparison signal line 5d according to the magnitude relationship of the signals input to the two input terminals.

2o is a heat source control means, which includes a relay, triac, S
It is composed of a CR, etc., and operates the heat source section 11. Reference numeral 19 is a driver circuit thereof, and reference numeral 21 is a driver monitor replica of the driver circuit 19, which is connected to one input channel of the analog multiplexer circuit 14.

A latch circuit 17 latches the output of the shift register circuit 18 with a nutrobe signal transmitted through a strobe signal line 6C. The output of the latch circuit 17 constitutes a reference level signal 17IL input to the D-me converter circuit 16, a channel selection signal 17b for selecting the input channel of the analog multiplexer circuit 14, and a heat source control signal 17C applied to the driver circuit 19. are doing.

Signals are transmitted from the microcomputer 22 in the remote control section 4 to the shift register circuit 18 via the clock signal line 6a and the transmission data signal line 6b.

FIG. 3 is a timing chart of signal transmission performed via the signal transmission line 5. In FIG.

(%) is a clock signal, and the transmission data signal in (b) is shifted from the 11i'70 computer 22 to the vsiyp
7 - Synchronization signal for serial transmission to circuit 18.

In the transmission data signal (b), for example, the 0th to 7th bits are used as the reference level signal 17a, the 8th to 11th bits are used as the channel selection signal 17b, and the 12th to 17th bits are used as the heat source control signal 170. It is arranged and composed.

(Q) is a strobe signal which latches a series of transmission data signals into the launch circuit 17 in parallel after being stored in the shift register circuit 18.

(d) is a comparison signal, and after the strobe signal is output, the input signal from the newly selected channel of the analog multiplexer circuit 14 and the new reference voltage from the D-me conversion circuit 16 are sent to the comparison circuit 16. input, resulting in a new comparison signal being output.

The microcomputer 22 takes in this new comparison signal transmitted via the comparison signal line 6d, and converts it to the analog multiplexer circuit 14 special demand 1982-182.
The state of the input signal from the channel selected by H.391(3) can be known.

Note that the reference level signal 1 given to the D-me conversion circuit 16
7& is uniquely determined by the microcomputer for each input signal of each channel selected by the analog multiplexer circuit 14, and each input signal is set to 0 or 7 with respect to a reference voltage set separately. “1” is detected.

Therefore, in this embodiment, the thermistors 121L to 12C1
Empty tank detector 13, status detection signal source such as driver monitor signal 21, analog multiplexer circuit 14, D-
The above-described state detection means 3 includes the system conversion circuit 16, the comparison circuit 15, and the like.

Furthermore, the microcomputer 22 connects the comparison signal line 6d.
By determining whether the comparison signal transmitted is "0" or "1'", it is possible to determine whether the state of the device is normal or abnormal. That is, the algorithm for this abnormality determination function is constructed by a program of the microcomputer 22, and in this embodiment, the microcomputer 22 functions as the above-mentioned abnormality determination means 7.

Next, when the state of the device is determined to be abnormal, an error display as shown in FIG. 4 is displayed on the numeric display 23. Here, "E" represents an error, and "4" represents an error number, that is, a signal from which input channel of the analog multiplexer circuit 14 indicates an abnormal state.

In this embodiment, the numeral display 23 is used to normally display a clock, timer, etc. in a 7-segment font configuration, but when an abnormality is determined, an error display is given priority. . Therefore, in this case, the numerical display 23 serves as the abnormality notification means 8.

In this way, the microcomputer 22 not only functions as a remote control section control means 6 that controls signal transmission, control of the numeric display 23, and input processing of switches, keys, etc., but also executes the operation sequence of the main body of the device. The 10 page function as the main control means is also realized by a program.

Therefore, when an abnormality is detected in the device, the microcomputer 2 is configured to interrupt or stop the operation of the device itself.
It is also possible to easily create the second program.

Further, in the case where the numerical display 23 normally used for displaying a clock, timer, etc. is used as the abnormality notification means 8 as in the above-mentioned embodiment, when multiple abnormalities occur at the same time, each abnormality is Setting priorities and displaying the highest priority abnormality contents on the numerical display 23 as shown in FIG. 4 can be easily realized by the program of the microcomputer 22.

FIG. 6 is an example of a state detection signal source that indicates the state of the equipment that is input to the analog multiplexer circuit 14.

(IL) is a circuit for outputting the state of a sensor 12 such as a thermistor attached to the wall surface of the tank 10, and 24 is a resistor. The microcomputer 2 is configured to output a predetermined reference voltage from the D-me conversion 11 page circuit 16 to the signal output from this circuit.
By transmitting predetermined data from the sensor 2 and determining the comparison result by the comparison circuit 15, it is possible to detect an abnormal state such as a disconnection or a short circuit in the sensor 12.

(b) is a circuit for outputting the status of the empty tank detector 13, and 26 is a resistor. In this circuit, switch 1
3a is turned ON when the tank 10 is filled with water (hot water), and turned OFF when it is not. The state of this circuit is also as described above.

Determined by the microcomputer 22, tank 1
The state of the water (hot water) in the room is detected.

(0) is a circuit for detecting the state of the driver circuit 19. 201L is a relay and is part of the heat source control means 20. 19a is a transistor, which is part of the driver circuit 19. A driver monitor signal 21 is output from the connection point between the diode 26 and the resistor 27 and input to the analog multiplexer circuit 14. In such a configuration, if the collector terminal 29 is detected at the "0" level when the ON signal does not come to the Beine terminal 28 of the transistor 19fL, the transistor 19 & is shorted. If there is a failure, it is determined to be abnormal.

As is clear from the above configuration and explanation, there are the following effects.

■ The state of the device detected by the state detection means 3 provided on the device main body side is transmitted as a signal to the remote control section 4, and the abnormality determination means 7 provided in the remote control section 4 determines that there is an abnormality in the state of the device. When it is determined that this is the case, the content is notified by the abnormality notification means 8, so that the user can quickly discover equipment failures or abnormalities in the living room such as the kitchen without having to go to the installation location of the equipment itself. is possible,
You can quickly take action to deal with it.

■ For the same reason, the remote control circuit itself
Since abnormalities in the equipment are monitored and reported, service personnel can very easily find the location of the failure when repairing the failure.

■ A numeric display 23 is provided on the remote control unit 4.
.--1. In the UNA remote control circuit, the numerical display 23 is also used as the abnormality notification means 8, so that the abnormality notification means 8 can be realized at low cost.

As explained above, the present invention is highly practical.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing the basic configuration of the present invention, FIG. 2 is a block diagram showing the circuit configuration of an embodiment, FIG. 3 is a timing diagram of some signals, and FIG. 4 is a partial explanation. Similarly, FIG. 6 is a partially detailed view. 1... Equipment body, 3... Status detection signal, 4... Remote control unit, 5... Signal transmission line, 7... Abnormality determination means, 8... Abnormality notification means.

Claims (1)

[Scope of Claims] (1) A remote control unit for remotely controlling the device body, a signal transmission line connecting the device body side and the remote control unit, and a signal transmission line provided on the device body side for detecting the status of the device. one or more state detection means, and an abnormality determination means for determining whether or not the device is abnormal based on the output content of the state detection means;
A remote control device comprising an abnormality notification means provided in the remote control unit and for notifying the contents of the abnormality detected by the abnormality determination means. (2) In a device having a numeric display for displaying a clock, a timer, etc., when an abnormality is detected by the abnormality determining means, the numeric display preferentially functions as an abnormality notification means. The remote control device according to item 1. (3) The abnormality determination means determines that two or more abnormalities are detected.
2. The remote control device according to claim 1, wherein when two abnormalities are detected at the same time, the abnormality content having the highest priority is notified according to a preset priority order. (4) The remote control device according to claim 1, wherein the operation of the device main body is interrupted or stopped when an abnormality is detected by the abnormality determining means. (6) The state control device according to claim 1, wherein the abnormality determining means is configured by a microcomputer control program.