JPS6142175B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a device for wirelessly and remotely controlling the temperature adjustment of an air conditioner, for example, and is intended to directly set each value of a large number of temperature adjustments.

Conventionally, the temperature adjustment function of wireless control devices such as air conditioners has been provided with two setting buttons on the transmitter to raise or lower the set temperature, and a display of the set temperature on the receiver. For example, if you keep pressing the "Increase Temperature" button on the transmitter, the set temperature will increase step by step, or if you continue to press the "Decrease" button, the set temperature will increase step by step. It was a method of regulating the temperature that gradually lowered the temperature. However, with the above method, if you want to change from one set value to the next distant setting, you have to press the setting button continuously, which takes time, and if you get stuck, the settings may go too far, which can be inconvenient. It was hot. In addition, it is necessary to display the set temperature to indicate the current set temperature, which has the disadvantage of complicating the circuit.

The present invention aims to eliminate such drawbacks, to make it convenient to directly set each value of a large number of temperature controls, and to simplify the circuit.

An embodiment of the present invention will also be described below with reference to the drawings. In FIG. 1, reference numeral 1 denotes an air conditioner main body, which has an air outlet 2 and a panel 3 on the front surface of the main body. An operation indicator light 4 is arranged on the front side of the panel 3, and a corner portion forms a receiving window 5 for receiving the transmitted wireless signal. In FIG. 2, 6 is a transmitter, which has a battery case 7 on the bottom surface, an operation panel 8 on the top surface, and a transmission window 9 on the front surface. The operation panel 8 is equipped with a sliding temperature control dial 10, a run/temperature setting button 11, a stop button 12, a strong wind/weak wind switching button 13, a sliding lock switch 14 to prevent accidental transmission, etc. . FIG. 3 is a circuit diagram of the transmitter 6,
A pair of contact pieces 15 provided on the temperature adjustment dial 10 slides in contact with a large number of opposing pairs of contacts 16, and when the operation/temperature setting button 11 is pressed, the pair of contact pieces 15 slides. The pair of contacts 16 that are in contact with each other are configured to conduct with each other. These many pairs of contacts 16, stop button 12, strong wind/weak wind switching button 13, etc. form a matrix circuit, which is input to the code generation circuit 17.

An oscillation circuit 18 that determines the fundamental frequency of the code generation circuit 17 is input to the code generation circuit 17.
When inputs are received from the pair of contacts 16 forming the matrix circuit, the operation/temperature setting button 11, the stop button 12, the strong wind/weak wind switching button 13, etc., the code generation circuit 17 is assigned to each of the inputs. A coded pulse is generated and output from one output line 19. A lock switch 14 is connected to the output line 19 via a limiting resistor 20 for limiting the output current. Lock switch 14
The output from the transmitter is modulated to a predetermined frequency by a pulse modulation circuit 21, and is amplified by an amplifier circuit 22, causing a transmitting element 23 to emit light, and a signal is sent into the air. A display element 24 (LED) for displaying signal transmission is connected to the pulse modulation circuit 21 in order to notify that the signal has been transmitted. 25
is a power source for driving the transmitter 6. Fig. 4 is a receiver circuit diagram of the air conditioner main body 1, where 26 is a receiving element that receives an optical signal.The received signal that is converted into an electrical signal here is amplified by an amplifier circuit 27, and the carrier frequency component is removed. After passing through a detection circuit 28 that extracts only the encoded pure signal, the code decoding circuit 29
is input. The code decoding circuit 29 decodes the input coded signal and decodes each temperature control signal line 3.
0, the operation signal line 31, the stop signal line 32, etc., respectively. (The signal line for switching between strong wind and weak wind is not shown.) Here, the receiving element 26, the amplifier circuit 27, the detection circuit 2
8. The code decoding circuit 29 is collectively referred to as a receiving circuit 33.

The output from the temperature control signal line 30 output from the receiving circuit 33 is composed of several pulses corresponding to the position of the temperature control dial 10 of the transmitter 6, and is output when the operation/temperature setting button 11 is operated.
2 with counter 34 (such as NEC's μPD4520C)
It is converted into a 4-bit code, and the code is held in a 4-bit latch 35 (such as NEC's μPD4042C). This 4-bit code is passed through the converter circuit 36 to the analog switch 37 (NEC
µPD4066C, etc.). Each temperature setting resistor 38a to 3 is controlled by the analog switch 37.
8e forms a digital volume by having both ends shot or opened.
38f is a semi-fixed volume for error adjustment. Here, the analog switch 37 uses another circuit voltage (DC5V) to reduce the on-resistance of this output (the resistance when the switch parts 37a to 37d are switched).
It is driven with a higher voltage (DC12V), and the converter circuit 36 in the previous stage converts the 4-bit coded signal from another circuit voltage (DC5V).
Voltage conversion is performed to increase the drive voltage of the analog switch 37 (DC12V). Regarding the temperature setting resistors 38a to 38e, the resistors 38d for the lowest bit to the resistor 38a for the highest bit correspond to the 4-bit code.
"Weighting" is performed on each resistance value up to, and if the resistance 38d is 1, the resistance 38c is 2.
The ratio is four times that of the resistor 38b, and eight times that of the resistor 38a. The resistor 38e is an adjustment resistor for adjusting the overall resistance value. These resistors 38a to 38d
When both ends of each of the four resistors are all shorted by the action of the analog switch 37 using a 4-bit code, the value of this part becomes "0", and when all are opened, the resistance value of this part becomes "0".
The resistance value is 15 times that of 8d, and 16 steps of resistance values can be selected using four resistors.

Here, a temperature setting circuit 39 is formed by the counter 34, 4-bit latch 35, converter circuit 36, analog switch 37, temperature setting resistors, and semi-fixed volume 38f.

Temperature setting resistors 38a to 38e, semi-fixed volume 38f (hereinafter referred to as digital volume 38a to 38f), and indoor temperature detector 4
The voltage level generated from 0 is the comparator 41
are input to each of the reference voltage generation resistors 42a to 42.
The reference voltage output from f and the comparator 41
are compared and input to the operation switching circuit 43. The output from the operation signal line 31 is sent to the receiving circuit 23 in response to the operation of the operation and temperature setting button 11 of the transmitter 6.
It is output as a single pulse momentarily earlier than the output of the temperature control signal line 30, and is inputted to the reset terminal of the counter 34, and at the same time as the counter 34 is reset, it is also inputted to the delay circuit 44. The output of the delay circuit 44 generates a pulse output that is sufficiently delayed with respect to the output of the operation signal line 31 and the output of the temperature control signal line 30, and the clock terminal of the 4-bit latch 35,
These signals are respectively input to the operation set terminals of the NAND gate flip-flop 45. The output from the stop signal line 32 is output as a single pulse from the receiving circuit 33 in response to the operation of the stop button 12 of the transmitter 6, and is input to the terminal for resetting the operation of this NAND gate flip-flop 45. ing. The output of the NAND gate flip-flop 45 is input to an operation switching circuit 43, which controls the operation of a switch 46 such as a relay.

Based on the above configuration, the operation will be explained next. Place temperature adjustment dial 1 at the position where you want to set the temperature using transmitter 6.
0 and press the operation button 11. If received, the reception circuit 33 first outputs a pulse from the operation signal line 31, and then the temperature adjustment signal line 30 outputs several pulses corresponding to the temperature adjustment dial 10. Output. The counter 34 is reset by the output of the operation signal line 31, and a 4-bit code is set in accordance with the number of pulse outputs of the temperature control signal line 30 that are subsequently output. When the code is set in the counter 34, the 4-bit latch 35 holds this code by outputting the operating signal through the delay circuit 44. The analog switch 37 sets the resistance values of the digital volumes 38a to 38f and the temperature setting circuit 39 using this held code.
The delay circuit 44 then sets the output of the NAND gate flip-flop 45 to "operation". Therefore, the temperature setting circuit 39 and the room temperature detector 40 provided in the air conditioner main body 1 are compared with a reference voltage by a comparator 41, and the operation is switched based on the "operation" setting of the NAND gate flip-flop 45. circuit 4
3 controls the operation of a switch 41 such as a relay. When the stop button 12 is pressed on the transmitter 6, if received, a pulse is output from the stop signal line 32 to reset the "operation" of the NAND gate flip-flop 45, and the operation switching circuit 43 stops the operation of the switch 46. let

In this way, the analog switch 37 uses the "weighting" of the resistance values of the temperature setting resistors 38a to 38d and the 4-bit coded signal to set the temperature setting resistors 38a to 38d.
By opening and shorting both ends of ~38d, it is possible to set the temperature in 16 steps using four resistor holes, and the number of circuit components can be reduced. Also transmitter 6
Simply align the temperature control dial 10 with the position where you want to set the temperature and press the operation/temperature setting button 11 to directly set the temperature and start operation on the receiver side, making the operation easy. Furthermore, even when changing the temperature setting, simply slide the temperature adjustment dial and press the operation/temperature setting button 11, and the output of the counter 34 and the 4-bit latch 35 on the receiver side will instantly change the temperature setting value after the change. The output of the analog switch 37 immediately connects the resistors 38a to 38a.
Since both ends of 38d are open shorted to change the resistance value, each temperature adjustment value can be set directly.
Operation becomes convenient. Moreover, since the temperature adjustment position set by the temperature adjustment dial 10 is stored in the transmitter 6, there is no need to display the set temperature, and the circuit can be simple. Even if the power is turned off and then turned on again, the temperature can be set by starting the operation, so there is no need for a preset circuit, and the circuit configuration is simple.

As is clear from the above description, according to the present invention, by sliding the contact piece and operating the operation/temperature setting switch, it is possible to directly set each temperature control value and start operation, and the temperature setting can be changed instantly. Excellent operability. Since the set temperature is maintained as the position of the contact piece on the transmitter side, the set temperature can be clearly determined even without a set temperature indicator light, which is effective in simplifying the circuit and reducing power consumption of the transmitter. .
Furthermore, once the temperature adjustment position is fixed, operation can be started and the desired temperature can be set instantly by simply operating the operation/temperature setting switch when the power is turned on or after a power outage is restored. Furthermore, since the start and stop switches are separated and sent as separate signals, this is effective in reducing power consumption of the transmitter and reduces operational errors.

[Brief explanation of the drawing]

Figures 1 and 2 are perspective views of an air conditioner main body and a transmitter equipped with a wireless remote thermo control device according to an embodiment of the present invention, Figure 3 is a circuit diagram of the transmitter, and Figure 4 is a reception in the air conditioner. A circuit diagram is shown. 6... Transmitter, 11... Switch (operation and temperature setting button), 15... Contact piece, 16... Contact,
33... Receiving circuit, 39... Temperature setting circuit, 43
...Operation switching circuit, 46...Switch.

Claims (1)

[Claims] 1. A large number of contacts arranged in pairs facing a predetermined temperature adjustment position, a pair of contact pieces that slide in contact with the pair of contacts, and a pair of contact pieces provided between the pair of contact pieces. an operation/temperature setting switch, a stop switch for stopping the operation, and a transmission for transmitting a signal corresponding to the contact with which the contact piece is in contact when the operation/temperature setting switch is turned on as an operation/temperature adjustment signal. a receiver circuit that receives, decodes, and outputs the signal transmitted from the transmitter;
A temperature setting circuit that uses the output of this receiving circuit to set the temperature corresponding to the temperature adjustment position, and a temperature setting circuit that compares the output of this temperature setting circuit with the output of the temperature sensor, and also uses the output of the receiving circuit to set a switch such as a relay. A wireless remote thermo control device comprising: a receiver having an operation switching circuit that drives the controller;