CN213778100U - Control circuit of multifunctional air conditioner operation panel - Google Patents

Abstract

The application relates to a control circuit of a multifunctional air conditioner operation panel, which comprises a key device, a control circuit and a control circuit, wherein the key device is used for receiving and responding to a key signal to output a control signal; infrared means for receiving and responding to the infrared signal to output a demodulated signal; the controller is connected with the key device and the infrared device and used for receiving and responding to the demodulation signal or the control signal so as to output an operation instruction for controlling the air conditioner; the buzzer is connected with the controller and used for responding to the operation instruction and outputting a sound feedback signal; and the backlight source is connected with the controller and used for responding to the operation instruction and outputting an optical feedback signal. The application has the effect of reducing the influence of key damage and failure phenomena on the air conditioner control, thereby improving the use experience of a user.

Description

Control circuit of multifunctional air conditioner operation panel

Technical Field

The application relates to the field of operation panels, in particular to a control circuit of a multifunctional air conditioner operation panel.

Background

At present, common household air conditioners can be matched with remote controllers for use, particularly wall-mounted air conditioners, and partial mobile phones on the market also support the infrared remote control function, so that the air conditioners can be controlled conveniently.

The central air conditioner in the common public place is not uniform in operation users, and the phenomenon of loss can be caused by adopting a remote controller, so that the central air conditioner can be independently provided with an operation panel, wherein the operation panel generally comprises a display screen, keys, a relay for controlling an electric valve of the air conditioner and the like, and the operation panel is convenient for the user to press the keys to control the air conditioner so as to adjust the indoor temperature and humidity.

With respect to the related art among the above, the inventors consider that the following drawbacks exist: the normal operation of an air conditioner is influenced by the phenomena of damage and failure of keys after the conventional air conditioner operation panel is used for a long time.

SUMMERY OF THE UTILITY MODEL

In order to reduce the influence of button damage, failure to the air conditioner control, this application provides a control circuit of multi-functional air conditioner operating panel.

The application provides a control circuit of multi-functional air conditioner operating panel adopts following technical scheme: a control circuit of a multifunctional air conditioner operation panel comprises an operation panel body and a control circuit,

the key device is used for receiving and responding to the key signal to output a control signal;

infrared means for receiving and responding to the infrared signal to output a demodulated signal;

the controller is connected with the key device and the infrared device and used for receiving and responding to the demodulation signal or the control signal so as to output an operation instruction for controlling the air conditioner;

the buzzer is connected with the controller and used for responding to the operation instruction and outputting a sound feedback signal;

and the backlight source is connected with the controller and used for responding to the operation instruction and outputting an optical feedback signal.

By adopting the technical scheme, a user can control various functions of the air conditioner by triggering the key device, when the key is out of order, the user can also be connected with the infrared device by a mobile phone or a remote controller and the like and acts through the infrared remote controller to control various functions of the air conditioner, so that the influence of the damage and failure of the key on the control of the air conditioner is reduced, and the use experience of the user is improved; the buzzer and the backlight source are used for performing sound and light feedback on the operation and control of the remote controller, the mobile phone and the like, so that a user is prompted that the operation panel receives a corresponding signal, for example, the user presses a key once, the buzzer sounds for a short time, or the remote controller is connected with the operation panel and a backlight source is lightened, and the problem that the user cannot see the display screen due to too long distance and operation is inconvenient is solved.

Preferably, the infrared device includes remote controller and the receiver of being connected with remote controller signal, the receiver includes infrared receiving head, first electric capacity, second electric capacity, first resistance and second resistance, the VCC end of infrared receiving head is through first resistance connection voltage input end, and its one end that is used for outputting demodulation signal to connect first electric capacity and second resistance respectively, and the second resistance other end is connected in voltage output end, and the GND end of infrared receiving head and the one end of second electric capacity are connected respectively to the first electric capacity other end, and the second electric capacity other end is connected between the VCC end of first resistance and infrared receiving head, and the tie point ground connection of first electric capacity and second electric capacity.

By adopting the technical scheme, the remote controller is used for responding to the action instruction of the user to send out the infrared signal, the receiver is used for receiving and demodulating the infrared signal to generate a demodulated signal, and the controller controls various functions of the air conditioner according to the demodulated signal.

Preferably, the infrared receiving head adopts an HS0038B receiving head.

By adopting the technical scheme, the working voltage of the HS0038B is 3-6V, the single chip microcomputer is convenient to use, and the HS0038B can receive signals from the 38KHZ modulation remote controller, so that the compatibility is strong, and the infrared remote control function is realized.

Preferably, one end of the buzzer is grounded, the other end of the buzzer is connected with a first triode and connected with an emitting electrode of the first triode, a collector electrode of the first triode is connected with a voltage input end, and a base electrode of the first triode is connected with a signal output end of the controller through a third resistor.

By adopting the technical scheme, when the control signal is a low level signal, the buzzer sounds, so that sound feedback is provided when a user presses the key, the user can conveniently distinguish whether the air conditioner responds, and functions such as temperature regulation are conveniently realized.

Preferably, the backlight source includes a light emitting diode, a switching tube, a sixth resistor and a seventh resistor, an anode of the light emitting diode is connected to the voltage input terminal through the seventh resistor, a cathode of the light emitting diode is connected to the input terminal of the switching tube, an output terminal of the switching tube is grounded, and a control electrode of the switching tube is connected to the signal output terminal of the controller through the sixth resistor.

By adopting the technical scheme, when the light-emitting diode receives the control signal of the controller, namely the high-level voltage signal, the light-emitting diode is conducted and is electrified to emit light, so that backlight is lightened, and the operation panel is convenient to use at night.

Preferably, the switch tube includes a second triode, a base of the second triode is connected to the signal output end of the controller through a sixth resistor, a collector of the second triode is connected to the cathode of the light emitting diode, and an emitter of the second triode is grounded.

By adopting the technical scheme, the controller is used for controlling the on and off of the light emitting diode through the second triode, so that the backlight source is conveniently controlled to provide the light feedback signal.

Preferably, the key device comprises a button switch, a debounce capacitor, a pull-up resistor and a current-limiting resistor, wherein one end of the button switch is connected with the voltage input end through the pull-up resistor, the other end of the button switch is grounded, the debounce capacitor is connected to two ends of the button switch in parallel, and a connection point of the button switch and the pull-up resistor is connected to the signal input end of the controller through the current-limiting resistor.

By adopting the technical scheme, the debouncing capacitor is connected in parallel with two ends of the button switch and is used for reducing the phenomenon of signal error report generated by the shake of the mechanical button; the current limiting resistor is used for reducing the damage of current impact to controllers such as a main control chip, a singlechip and the like; when a user presses the corresponding button switch, the signal input end of the controller receives the voltage signal, and corresponding function feedback is carried out, so that the control of the operation panel and the air conditioner is realized.

Preferably, the operation panel body is provided with a built-in sensor, the built-in sensor comprises a thermistor, a divider resistor, a third capacitor, a fourth resistor and a fifth resistor, the thermistor is connected with the divider resistor in series, one end of the divider resistor is grounded, one end of the divider resistor is connected with a voltage input end, the fourth resistor and the third capacitor are connected in parallel and are both connected in parallel with two ends of the thermistor, and one end of the thermistor connected with the divider resistor is connected with a signal input end of the controller through the fifth resistor.

Through adopting above-mentioned technical scheme, thermistor and divider resistance form bleeder circuit, and thermistor adopts the resistance that has the inverse temperature coefficient, and it has the characteristic that the higher the temperature of being heated the resistance is littleer, and the room temperature is higher promptly, and the voltage of controller signal input end input is lower more to this indoor temperature of monitoring makes things convenient for the user to carry out temperature regulation according to indoor actual temperature.

Drawings

FIG. 1 is an overall schematic diagram of an embodiment of the present application;

FIG. 2 is a schematic circuit diagram of a portion of an embodiment of the present application, showing primarily an infrared device;

FIG. 3 is a schematic diagram of a portion of an embodiment of the present application, showing primarily a buzzer;

FIG. 4 is a partial circuit schematic of an embodiment of the present application, showing primarily a built-in sensor;

FIG. 5 is a schematic diagram of a portion of an electrical circuit of an embodiment of the present application, showing primarily a backlight;

FIG. 6 is a schematic circuit diagram of a portion of an embodiment of the present application, showing primarily a key device;

fig. 7 is a partial circuit schematic diagram of the embodiment of the present application, mainly showing a control device.

Description of reference numerals: 1. an infrared device; 2. a buzzer; 3. a built-in sensor; 4. a backlight source; 41. a switching tube; 5. a key device; 6. and a controller.

Detailed Description

The present application is described in further detail below with reference to figures 1-7.

The embodiment of the application discloses control circuit of multifunctional air conditioner operation panel.

Referring to fig. 1, the control circuit of the multifunctional air conditioner operation panel comprises a controller 6, a backlight source 4, a built-in sensor 3, an infrared device 1, a buzzer 2 and a key device 5, wherein the backlight source 4 is used for providing backlight for a display screen, so that the operation panel is convenient to use at night. The built-in sensor 3 comprises a temperature sensor for monitoring the temperature parameter of the area where the operation panel is located, and the infrared device 1 is used for realizing the remote control function of the air conditioner, so that the control of various functions is facilitated. The controller 6 may be a single chip for outputting operation instructions to control the air conditioner to perform various functions.

Referring to fig. 1 and 2, the infrared device 1 includes a remote controller and a receiver connected to the remote controller, and the remote controller (not shown) may be a YKR-H008 type having infrared transmitting and receiving functions, and is configured to respond to a user's motion command to send an infrared signal. The receiver comprises an HS0038B infrared receiving head, a first capacitor C1 and a second capacitor C2, wherein a VCC end of the receiver is connected with a voltage input end through a first resistor R1, an OUT end of the receiver is respectively connected with one ends of the first capacitor C1 and a second resistor R2, the other end of the second resistor R2 is connected with a voltage output end, the other end of the first capacitor C1 is respectively connected with a GND end of the HS0038B infrared receiving head and one end of a second capacitor C2, and the other end of the second capacitor C2 is connected between the first resistor R1 and the VCC end of the HS0038B infrared receiving head. When the remote controller works, the HS0038B infrared receiving head receives an infrared signal of the remote controller, converts the infrared signal into a demodulation signal through the demodulation function of the infrared receiving head and sends the demodulation signal to the controller 6, and the controller 6 outputs an operation instruction according to the demodulation signal to control various functions of the air conditioner.

Referring to fig. 1 and 3, one end of the buzzer 2 is grounded, the other end of the buzzer is connected to a first triode Q1 and is connected to an emitter of a first triode Q1, a collector of the first triode Q1 is connected to a voltage input end, and a base of the first triode Q1 is connected to a signal output end of the controller 6, i.e., a TONE end, through a third resistor R3, and is configured to receive and respond to an operation instruction of the controller 6 to control the buzzer 2 to output a sound feedback signal. When the control signal is a low level signal, the buzzer 2 sounds, so that sound feedback is provided when a user presses a key, the user can conveniently distinguish whether the air conditioner responds, and functions such as temperature regulation and the like are conveniently realized.

Referring to fig. 3 and 4, the built-in sensor 3 includes a thermistor RT, a voltage dividing resistor RX, a third capacitor C3, a fourth resistor R4, and a fifth resistor R5, the thermistor RT is connected in series with the voltage dividing resistor RX, and one end of the voltage dividing resistor RX is connected to a voltage input terminal. The fourth resistor R4 and the third capacitor C3 are connected in parallel and are both connected in parallel to two ends of the thermistor RT, and one end of the thermistor RT connected to the voltage dividing resistor RX is connected to a signal input end of the controller 6, i.e., an AD1 end, through a fifth resistor R5. Thermistor RT adopts the resistance of anti temperature coefficient, and built-in sensor 3 is through thermistor RT and divider resistor RX's partial pressure principle for the voltage signal that is inverse relation with temperature is received to the signal input part of controller 6, thereby monitors the appointed region, indoor temperature parameter promptly, and convenience of customers carries out temperature regulation according to indoor actual temperature.

Referring to fig. 3 and 5, the backlight 4 includes a light emitting diode D1, a switching tube 41, a sixth resistor R6, and a seventh resistor R7, the switching tube 41 employs a second transistor Q2, an anode of the light emitting diode D1 is connected to a voltage input end through a seventh resistor R7, and a cathode of the light emitting diode D1 is connected to a collector of a second transistor Q2. The emitter of the second triode Q2 is grounded, and the base thereof is connected to the signal output end of the controller 6, i.e. the BL end, through the sixth resistor R6, and is used for receiving the control signal of the controller 6 to output the optical feedback signal, i.e. control the light emitting diode D1 to emit light, so as to illuminate the backlight, and facilitate the night use of the operation panel.

Referring to fig. 3 and 6, the plurality of key devices 5 are provided, and each of the key devices 5 includes a push switch, a debounce capacitor, pull-up resistors, and current limiting resistors, where the push switch is JB1, JB2, JB3, JB4, and JB5 in the drawing, the debounce capacitor is C4, C5, C6, C7, and C8 in the drawing, the pull-up resistor is R8, R9, R10, R11, and R12 in the drawing, and the current limiting resistor is R13, R14, R15, R16, and R17 in the drawing. One end of the button switch is connected with the voltage input end through a pull-up resistor, the other end of the button switch is grounded, and the debouncing capacitor is connected in parallel with two ends of the button switch and used for reducing the phenomenon of signal error reporting caused by mechanical key shaking. The connection point of the push-button switch and the pull-up resistor is connected to the signal input end of the controller 6, namely the KEY1, KEY2, KEY3, KEY4 and KEY5 ends through the current-limiting resistor. When a user presses a corresponding button switch, that is, the button device 5 receives a button signal, the signal input end of the controller 6 receives a control signal, so as to output an operation instruction for controlling the air conditioner, so that the air conditioner performs corresponding function feedback, thereby realizing control of the operation panel and the air conditioner.

Referring to fig. 7, the control circuit further includes a control device, a first Relay1, a second Relay2 and a third Relay3, wherein the first Relay1, the second Relay2 and the third Relay3 are all of YQ501-DC12V type and are of single-pole double-throw design. One ends of the coil of the first Relay1, the coil of the second Relay2 and the coil of the third Relay3 are all connected to a 12V voltage input end, and the other ends are respectively connected with signal output ends RL1, RL3 and RL2 of the control device. The control device can adopt an MCU, and the RL1, RL3 and RL2 signal output ends of the MCU are used for outputting low-level signals to control the relay coil to be electrified so as to control the relay switching contact.

Because the air conditioner generally adopts two-pipe two-line valve, namely the opening circuit or closing circuit of the electric valve only needs to be electrified at the same time, the electric valve is opened when the opening circuit is electrified, and the electric valve is closed when the closing circuit is electrified. Therefore, the movable contact of the first Relay1 is connected to the live wire, and the normally closed contact and the normally open contact of the first Relay are connected to the valve closing line VAL2 and the valve opening line VAL1 of the electric valve, respectively, whereby the opening and closing of the electric valve are controlled by controlling the signal output of the RL 1.

And the fan of the air conditioner generally adopts a three-speed fan, and the three-speed fan has three stages of high-speed, medium-speed and LOW-speed gears, and the three stages of gears correspond to a high-speed line HI, a medium-speed line MED and a LOW-speed line LOW. And the movable contact of the second Relay2 is connected with the valve opening line VAL1 of the electric valve, the normally closed contact and the normally open contact of the second Relay2 are respectively connected with the movable contact of the third Relay3 and the high-speed line HI, and the normally closed contact and the normally open contact of the third Relay3 are respectively connected with the LOW-speed line LOW and the medium-speed line MED. The user can control the high-speed line HI to be electrified or supply power to the movable contact of the third Relay Relay3 by controlling the RL3 signal output, and the user can further control the LOW-speed line to be electrified or the medium-speed line MED to be electrified by controlling the RL2 signal output, so that the switching of the high-speed line HI, the medium-speed line MED and the LOW-speed line LOW of the fan is realized.

Because the three-speed fan only needs to be maintained at one gear of three-level gears of high speed, medium speed and LOW speed simultaneously, the switching of the gears can be realized through the cooperation of the second Relay Relay2 and the third Relay Relay3, so that the using number of the relays is reduced, compared with five common single-pole single-throw relays which respectively and independently control a high-speed line HI, a medium-speed line MED, a LOW-speed line LOW and an electric valve, and a valve opening line and a valve closing line, the manufacturing cost is reduced, the hardware occupation space is saved, and the light weight of an operation panel is conveniently realized.

The implementation principle of the embodiment is as follows: when partial keys of the operation panel are damaged or fail, a user can start an infrared remote control mode, such as starting infrared remote control software of the mobile phone, and aim at an infrared receiving head of the operation panel to control the mobile phone to output infrared signals, at the moment, the infrared receiving head receives the infrared signals of the remote controller, converts the infrared signals into demodulation signals through the demodulation function of the infrared receiving head and sends the demodulation signals to the controller 6, and the controller 6 outputs operation instructions according to the demodulation signals to control various functions of the air conditioner. And when the controller 6 outputs an operation instruction, the TONE end outputs a pulse signal to control the buzzer to sound, thereby providing sound feedback; meanwhile, the BL terminal of the controller 6 outputs a high level signal, so that the switching tube 41 is turned on and the light emitting diode is turned on, and at this time, the backlight of the display screen of the operation panel is turned on to provide optical feedback, thereby facilitating a user to check various parameters of the air conditioner at night.

When the cooling/heating function of the air conditioner needs to be started, a user only needs to control the RL1 to output a low-level signal through the operation panel, at the moment, the normally open contact of the first Relay Relay1 is closed, the valve opening circuit VAL1 is electrified, at the moment, the electric valve is opened, and at the same time, the movable contact of the second Relay Relay2 is electrified. At this time, if the RL3 is controlled to output a low level signal, the normally open contact of the second Relay2 is closed, the high-speed line HI of the fan is electrified, and the fan is lifted to a high-speed gear. If the RL3 is controlled to output a high-level signal, the high-speed line HI is disconnected, the movable contact of the third Relay Relay3 is electrified, and a user can further control the LOW-speed line LOW to be electrified or the MED to be electrified by controlling the RL2 signal output, so that the multi-stage switching of the fan rotating speed gears is realized.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims (8)

1. The utility model provides a control circuit of multi-functional air conditioner operating panel which characterized in that: comprises the steps of (a) preparing a mixture of a plurality of raw materials,

the key device (5) is used for receiving and responding to the key signal to output a control signal;

infrared means (1) for receiving and responding to the infrared signal to output a demodulated signal;

the controller (6) is connected with the key device (5) and the infrared device (1) and is used for receiving and responding to the demodulation signal or the control signal so as to output an operation instruction for controlling the air conditioner;

the buzzer (2) is connected with the controller (6) and is used for responding to the operation instruction and outputting a sound feedback signal;

and the backlight source (4) is connected with the controller (6) and is used for responding to the operation instruction and outputting an optical feedback signal.

2. The control circuit of the multifunctional air conditioner operation panel according to claim 1, wherein: infrared device (1) include the remote controller and with remote controller signal connection's receiver, the receiver includes infrared receiving head, first electric capacity, second electric capacity, first resistance and second resistance, the VCC end of infrared receiving head is through first resistance connection voltage input end, and its one end that is used for outputting demodulation signal to connect first electric capacity and second resistance respectively, and the second resistance other end is connected in voltage output end, and the GND end of infrared receiving head and the one end of second electric capacity are connected respectively to the first electric capacity other end, and the second electric capacity other end is connected between the VCC end of first resistance and infrared receiving head, and the tie point ground connection of first electric capacity and second electric capacity.

3. The control circuit of the multifunctional air conditioner operation panel according to claim 2, wherein: the infrared receiving head adopts an HS0038B receiving head.

4. The control circuit of the multifunctional air conditioner operation panel according to claim 1, wherein: one end of the buzzer (2) is grounded, the other end of the buzzer is connected with a first triode and connected with an emitting electrode of the first triode, a collecting electrode of the first triode is connected with a voltage input end, and a base electrode of the first triode is connected with a signal output end of the controller (6) through a third resistor.

5. The control circuit of the multifunctional air conditioner operation panel according to claim 1, wherein: the sensor is characterized by further comprising a built-in sensor (3), wherein the built-in sensor (3) comprises a thermistor, a divider resistor, a third capacitor, a fourth resistor and a fifth resistor, the thermistor is connected with the divider resistor in series, one end of the divider resistor is connected with the ground, one end of the divider resistor is connected with a voltage input end, the fourth resistor and the third capacitor are connected in parallel and are connected to two ends of the thermistor in parallel, and one end of the thermistor, which is connected with the divider resistor, is connected to a signal input end of the controller (6) through the fifth resistor.

6. The control circuit of the multifunctional air conditioner operation panel according to claim 1, wherein: the key device (5) comprises a button switch, a debounce capacitor, a pull-up resistor and a current-limiting resistor, one end of the button switch is connected with a voltage input end through the pull-up resistor, the other end of the button switch is grounded, the debounce capacitor is connected to two ends of the button switch in parallel, and a connection point of the button switch and the pull-up resistor is connected to a signal input end of the controller (6) through the current-limiting resistor.

7. The control circuit of the multifunctional air conditioner operation panel according to claim 1, wherein: the backlight source (4) comprises a light emitting diode, a switch tube (41), a sixth resistor and a seventh resistor, wherein the anode of the light emitting diode is connected with the voltage input end through the seventh resistor, the cathode of the light emitting diode is connected with the input end of the switch tube (41), the output end of the switch tube (41) is grounded, and the control electrode of the switch tube is connected with the signal output end of the controller (6) through the sixth resistor.

8. The control circuit of the multifunctional air conditioner operation panel according to claim 7, wherein: the switch tube (41) comprises a second triode, the base electrode of the second triode is connected with the signal output end of the controller (6) through a sixth resistor, the collector electrode of the second triode is connected with the cathode of the light emitting diode, and the emitting electrode of the second triode is grounded.

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