JPH0314832Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) The present invention relates to a wireless remote control device that remotely controls the operation and temperature settings of an air conditioner, etc., and more specifically, the invention relates to a wireless remote control device that remotely controls the operation and temperature settings of an air conditioner, etc., and specifically, to reduce the power consumption of the device. Regarding.

(Prior Art) Some recent air conditioners are equipped with a wireless remote control device for remotely controlling the air conditioners. A conventional example of such a wireless remote control device is, for example, Japanese Patent Application Laid-open No. 57
There is one disclosed in the publication No. -92639.

Such a wireless remote control device is connected wirelessly to the main body of the air conditioner, so it is generally powered by battery power.

By the way, since such devices are carried and operated by the operator, there is a demand for miniaturization in order to improve operability, etc., and for this reason, the battery power source built into the device is also required to reduce the overall weight. There is a tendency to use smaller ones to reduce this. In this case, the lifespan of a small battery power source is usually shortened if it is used continuously.

(Problem that the invention aims to solve) However, it is extremely troublesome for the operator to have to replace the battery with a new one when the battery reaches the end of its life even though the device is only used for a short period of time. . In addition, if the air conditioner does not operate even though the battery power has reached the end of its lifespan, but the user does not know this and operates the device, there are problems such as thinking that the air conditioner is malfunctioning. .

The present invention has been made in view of the above circumstances, and an object of the present invention is to reduce the power consumption of a battery power source in a wireless remote control device driven by a battery power source.

(Means for solving the problem) In order to achieve this purpose, the present invention
It is equipped with a switch circuit section having a search start switch and a transmission data setting switch that are operated when canceling standby, and an open-drain output type digital IC. There is a first switch search signal output port that outputs a first level signal and a second level signal when standby is released, and a second switch search signal output port that is provided corresponding to the transmission data setting switch. and a first and a second switch which input each switch search signal given through each switch when each switch is on as a switch signal.
It has a switch signal input port and a transmission data output port, and one contact of the switch search start switch is connected to the first switch search signal output port, and the other contact is connected to the first switch signal input port. One contact of the transmission data setting switch is connected to the second switch search signal output port, the other contact is connected to the second switch signal input port, and the first switch search The signal output port is connected to an input section of an inverter circuit, and the output section of the inverter circuit is connected to a standby release signal input port and the second switch signal input port via a pull-up resistor and the transmission data setting switch, respectively. and digital
The IC outputs a second level signal from the first switch search signal output port when the switch search start switch is on, and outputs the second switch search signal in response to the standby release signal applied to the standby release signal input port. A switch search signal is output from the output port, and the inverter circuit inverts the second level signal from the first switch search signal output port and uses this as a standby release signal to send to the standby release signal input port and the transmission data setting switch. I am trying to output it to .

(Function) With this configuration, the digital IC is disabled while the search start switch is not turned on.
A first level signal is output from the first switch search signal output port of the inverter circuit, and a second level signal is thereby output from the output section of the inverter circuit. When this second level signal is at a low level, no current flows into the pull-up resistor even if the transmission data setting switch is turned on in response to transmission data. This reduces power consumption of the battery power source. Also, when the search start switch is turned on, the digital
From the first switch search signal output port of the IC to the second
As a result, the inverter circuit applies the first level signal as a standby release signal to the standby release signal input port of the digital IC, and the digital IC outputs a switch search signal from the second switch search signal output port. As a result, the transmission data corresponding to the setting of the transmission data setting switch is input to the switch signal input port. In this way, the digital IC outputs transmission data from the transmission data output port in accordance with the setting of the transmission data setting switch.

(Example) Hereinafter, the present invention will be described in detail based on an example shown in the drawings. The figure is a circuit diagram of a wireless remote control device according to an embodiment of the present invention. This wireless remote control device is used to remotely control an air conditioner body (not shown).

In the figure, 1 is a switch circuit section. This switch circuit section 1 includes a push-on operation switch 11a as a switch search start switch A that is operated when canceling standby, a timer switch 12a, a mode change switch 13a, and other switches 14a, and a transmission data setting switch B. temperature setting switch group 15, timer setting switch group 16, and air volume changeover switch group 1.
7 and a mode change switch group 18. In this case, the wireless remote control device transmits the on/off data of the search start switch A as the transmission data in the same manner as the on/off data of the transmission data setting switch B.

Operation switch 11a, timer switch 12a,
The mode change switch 13a and the other switches 14a are equipped with diodes 11b and 1, respectively.
2b, 13b, and 14b are connected. The temperature setting switch group 15 includes four switches 151a and 152.
a, 153a, 154a, and four diodes 1
51b, 152b, 153b, and 154b. The timer setting switch group 16 includes four switches 161a, 162a, 163a, 164a and four diodes 161b, 162b, 163b, 1
64b. The air volume selector switch group 17 is 4
switches 171a, 172a, 173a, 1
74a and four diodes 171b, 172b,
It consists of 173b and 174b. The mode changeover switch group 18 includes four switches 181a and 182.
a, 183a, 184a and four diodes 18
1b, 182b, 183b, and 184b.

Each of the switch groups 15 to 18 has a 4-bit configuration with a combination of 4 switches, and therefore each constitutes 16 types of transmission data.
The diode of each switch is for specifying the direction of current, so that the current flows only in one direction according to the polarity of the diode.

2 is an open drain output type digital IC
It is. This digital IC 2 constitutes a CMOS microcomputer, and specific examples of this digital IC 2 include MB4201 (manufactured by Fujitsu Ltd.) and AN1201 (manufactured by Matsushita Electronic Components Co., Ltd.). This digital IC2 is connected to the standby release signal input port IN5 and the first input port in the standby state.
The first switch search signal output port OUT1 outputs a high-level signal as a level signal, and outputs a low-level signal as a second level when canceling standby, and is provided corresponding to the transmission data setting switches 15 to 18. second switch search signal output ports OUT2 to OUT5, and switch signal input ports IN1 to IN4 which input, as switch signals, respective switch search signals given through the respective switches 11a to 18 when the switches 11a to 18 are on. and transmit data output port
It has OUT6.

Further, one contact point of each of the switches 11a to 14a serving as the switch search start switch A is connected to the first switch search signal output port OUT1.
Common to both, the other contact is the switch signal input port
Individually connected to IN1 to IN4.

Each switch 15 of the temperature setting switch group 15
One contact point of each of 1a, 152a, 153a, and 154a is the second switch search signal output port.
Common to OUT2, the other contacts are individually connected to switch signal input ports IN1 to IN4.

Each switch 161 of the timer setting switch group 16
One contact of each of a, 162a, 163a, and 164a is the second switch search signal output port.
Common to OUT3, the other contacts are individually connected to switch signal input ports IN1 to IN4.

Each switch 171 of the air volume selection switch group 17
One contact of each of a, 172a, 173a, and 174a is the second switch search signal output port.
Common to OUT4, the other contacts are individually connected to switch signal input ports IN1 to IN4.

Each switch 181 of the mode selection switch group 18
A, 182a, 183a, 184a, each one of the contacts is the second switch search signal output port.
Common to OUT5, the other contacts are individually connected to switch signal input ports IN1 to IN4.

Said first switch search signal output port OUT1
The input section of the inverter circuit 3 is connected to a common connection point between the switch search start switch A and one of the contacts of each of the switches 11a to 14a.
Furthermore, the output section of the inverter circuit 3 is connected to a standby release signal input port IN5 and a pull-up resistor R.
1 to R4 and the transmission data setting switch B to the switch signal input ports IN1 to IN4, respectively.

The digital IC 2 is connected to one of the switches 11a to 14 in the switch search start switch A.
When a is on, the first switch search signal output port OUT1 outputs a low level signal, and in response to the standby release signal applied to the standby release signal input port IN5, software scans and the second switch search signal is output. output port
A switch search signal is output from OUT2 to OUT5.

The inverter circuit 3 inverts the low level signal from the first switch search signal output port OUT1 and uses it as a standby release signal to set transmission data via the standby release signal input port IN5 and pull-up resistors R1 to R4. Output to switch B.

R5 and R6 are current limiting resistors, and R7 to R10 are resistors that determine the potential level to each input port IN1 to IN4. Further, C is a smoothing capacitor. +Vcc is a power receiving terminal from the battery power source.

The LED is an infrared diode, and the infrared diode LED is driven by a drive transistor Tr to send transmission data from the output port OUT6 of the digital IC to a receiver (not shown) in the air conditioner main body.

With this configuration, while none of the switches 11a to 14a of the switch search start switch A are turned on, that is, in the standby state, a high level signal is output from the first switch search signal output port OUT1 of the digital IC 2. is being output. As a result, a low level signal is output from the output section of the inverter circuit 3. Then, even if each switch in each switch group 15 to 18 of the transmission data setting switch B is turned on corresponding to the transmission data, the pull-up resistor R is turned on.
No current flows into R1 to R4. Thereby, while the wireless remote control device is in the standby state, the power consumption of the battery power source by the pull-up resistors R1 to R4 is cut.

Also, when the switch 14a in the search start switch A is turned on, the digital
IC2 first switch search signal output port OUT1
A high level signal from the switch 14a is input to the corresponding switch signal input port.
The signal is input to IN4, and the digital IC2 outputs a low level signal from its first switch search signal output port OUT1 by the action of the built-in circuit. As a result, the inverter circuit 3 inverts this low level signal to make it a high level signal, and this high level signal is applied as a standby release signal to the standby release signal input port IN5 of the digital IC 2.

Digital IC2 outputs each second switch search signal output port OUT2 or
The switch search signal is scanned by software and outputted from OUT5, whereby the transmission data corresponding to each setting of the transmission data setting switch B is inputted to the switch signal input ports IN1 to IN4. In this way, the digital IC 2 outputs transmission data from the transmission data output port OUT6 in accordance with the setting of the transmission data setting switch B.

In the above embodiment, the switch search start switch A
The switch signal input port that inputs the switch search signal given through switch A when it is on is called the first switch signal input port, and when the transmission data setting switch B is on, that switch B is input. When the switch signal input port that inputs the switch search signal given through the switch signal as a switch signal is called the second switch signal input port, both of the input ports are shared, but in the present invention, the first, The second switch signal input ports may be individually configured for exclusive use.

(Effects) As described above, according to the present invention, the switch circuit section includes a search start switch and a transmission data setting switch that are operated when canceling standby, and an open-drain output type digital
This digital IC is equipped with an input port for a standby release signal, a first switch search signal output port that outputs a high level signal in the standby state, and a low level signal when the standby is released, and a transmitter. A second switch search signal output port provided corresponding to the data setting switch, and first and second switch search signals that input each switch search signal provided through each switch when each switch is on as a switch signal. It has a switch signal input port and a transmission data output port, and also has a switch search start switch.
One contact is connected to the first switch search signal output port, the other contact is connected to the first switch signal input port, and one contact of the transmission data setting switch is connected to the second switch search signal output port. The other contact is connected to the second switch signal input port, and the input section of the inverter circuit is connected to the connection point between one contact of the first switch search signal output port and the switch search start switch. The output section of the inverter circuit is connected to the standby release signal input port and the second switch signal input port via the pull-up resistor and the transmission data setting switch, respectively, and the output section of the inverter circuit is connected to the second switch signal input port via the pull-up resistor and the transmission data setting switch.
The IC outputs a low level signal from the first switch search signal output port when the switch search start switch is on, and outputs the second switch search signal in response to the standby release signal applied to the standby release signal input port. A switch search signal is output from the port, and the inverter circuit inverts the low level signal from the first switch search signal output port and uses it as a standby release signal to the standby release signal input port and the transmission data setting switch. I made it to output, so
No current flows through the pull-up resistor unless the search start switch is turned on. Therefore, even if the transmission data setting switch is turned on in the standby state, the battery power of the device is not consumed, and power consumption is greatly reduced.

[Brief explanation of drawings]

The figure is a circuit diagram of an embodiment of the present invention. In the figure, 1 is a switch circuit, 2 is a digital IC, 3 is an inverter circuit, A is a switch search start switch, B is a transmission data setting switch, R
1 or R4 are pull-up resistors, OUT1 or
OUT6 is an output port, IN1 to IN5 are input ports, and +Vcc is a battery power receiving terminal.

Claims (1)

[Claims for Utility Model Registration] A switch circuit unit 1 having a search start switch A and a transmission data setting switch B that are operated when canceling standby, and an open-drain output type digital IC 2, the digital IC 2 is the standby release signal input port IN5, which outputs the first level signal in the standby state, and outputs the second level signal when the standby is released.
The first switch search signal output port OUT1 outputs the level signal, and the transmission data setting switch B
and second switch search signal output ports OUT2 to OUT5 provided corresponding to the switches A and B, respectively, and input the switch search signals given through the switches A and B when the switches A and B are on as switch signals. It has first and second switch signal input ports IN1 to IN4 and a transmission data output port OUT6, and one contact of the switch search start switch A is connected to the first switch search signal output port.
OUT1, the other contact is connected to the first switch signal input ports IN1 to IN4, respectively, and one contact of the transmission data setting switch B is connected to the second switch search signal output port OUT2.
to OUT5, and the other contact is connected to the second switch signal input ports IN1 to IN4, respectively, and the first switch search signal output port OUT1.
is connected to the input part of the inverter circuit 3, and the output part of the inverter circuit 3 is connected to the standby release signal input port IN5 and the second switch signal input port via pull-up resistors R1 to R4 and the transmission data setting switch B. are connected to IN1 to IN4, respectively, and the digital IC2 outputs a second level signal from the first switch search signal output port OUT1 when the switch search start switch A is on,
and outputs a switch search signal from the second switch search signal output ports OUT2 to OUT5 in response to the standby release signal applied to the standby release signal input port IN5, and the inverter circuit 3 outputs the switch search signal from the first switch search signal output port OUT1. A wireless remote control device characterized in that the second level signal of the inverter is inverted and output as a standby release signal to the standby release signal input port IN5 and the transmission data setting switch B.