CN213338463U

CN213338463U - Wireless temperature control panel with adjustable output voltage

Info

Publication number: CN213338463U
Application number: CN202022457852.7U
Authority: CN
Inventors: 徐海滨; 刘滨
Original assignee: Nanjing Puietel Technology Co ltd
Current assignee: Nanjing Puietel Technology Co ltd
Priority date: 2020-10-29
Filing date: 2020-10-29
Publication date: 2021-06-01
Anticipated expiration: 2030-10-29

Abstract

The utility model discloses a wireless temperature control panel with adjustable output voltage, which comprises a power module, a microcontroller module, a man-machine interaction module, a temperature detection module, a wireless communication module, a relay output module and an output voltage adjustable module, wherein the microcontroller module, the man-machine interaction module, the temperature detection module, the wireless communication module, the relay output module and the output voltage adjustable module are powered by the power module; the microcontroller module receives temperature data acquired by the temperature detection module, and controls the fan coil through the relay output module and the output voltage adjustable module to realize the switching on and off of an air conditioner, the switching of a refrigeration and heating mode and the adjustment of air speed; the human-computer interaction module is used for locally realizing control over the fan coil, and the wireless communication module is used for remotely communicating with the microcontroller module. In the utility model, the user can control the air conditioner locally through the man-machine interaction module, and can also control the air conditioner remotely through the wireless communication module; the fan coil is controlled by the relay output module and the output voltage adjustable module, so that the on-off, the refrigeration and heating mode switching and the air speed adjustment of the air conditioner are realized.

Description

Wireless temperature control panel with adjustable output voltage

Technical Field

The utility model relates to an intelligence house technical field especially relates to an output voltage adjustable wireless temperature control panel.

Background

In recent years, with the increasing of domestic economic level, the application of the central air conditioner in various large-scale buildings such as hotels and guest houses has been widely popularized. A central air conditioning system generally consists of a cold and heat source system and an air conditioning system. In China, most of air conditioning systems are based on fan coils, and users mainly control the fan coils through temperature control panels in rooms so as to adjust the indoor air temperature.

The fan coil mainly comprises a fan and a water coil. The air outlet speed of the air conditioner is controlled by the fan: high wind, stroke, low wind; the mode of the water coil controlling the air conditioner is as follows: cooling, heating, ventilation, etc. As a control terminal, the temperature control panel needs to control the two parts separately. For the water coil part, the temperature control panel mainly controls an electric valve of the water coil through a relay so as to control modes of refrigeration, heating and the like of the air conditioner; for the part of the fan, because the control interfaces of various brand manufacturers are not uniform, some can be directly controlled by a relay, and some need to be controlled by 0-10V analog signals.

Common temperature control panel in the market at present, or for traditional forceful electric power temperature control panel, or for the intelligent temperature control panel of bus communication combination full relay output, these several kinds of products all have some weak points more or less: 1. the traditional strong-current temperature control panel has single function, cannot meet the control requirement of the Internet of things, carries out remote control or scene linkage control, has poor user experience, and is not beneficial to energy conservation and environmental protection; 2. the bus communication temperature control panel needs additional slotting wiring when being installed and used, the construction is complex, and the investment cost is high; 3. the temperature control panel output by the full relay is small in application range, only part of switch type fan coils can be controlled, and 0-10V analog quantity fan coils cannot be effectively controlled.

SUMMERY OF THE UTILITY MODEL

The technical purpose is as follows: aiming at the defects of single function, high cost and small application range of the wireless temperature control panel in the prior art, the utility model discloses a wireless temperature control panel with adjustable output voltage, which can control the air conditioner locally through a man-machine interaction module and can also carry out remote control through a wireless communication module through a gateway or other bound wireless transceiver; the fan coil is controlled by the relay output module and the output voltage adjustable module, so that the on-off, the refrigeration and heating mode switching, the air speed adjustment and the like of the air conditioner are realized.

The technical scheme is as follows: in order to achieve the technical purpose, the utility model adopts the following technical scheme.

An output voltage adjustable wireless temperature control panel, comprising: the system comprises a power supply module, a microcontroller module, a human-computer interaction module, a temperature detection module, a wireless communication module, a relay output module and an output voltage adjustable module, wherein the microcontroller module, the human-computer interaction module, the temperature detection module, the wireless communication module, the relay output module and the output voltage adjustable module are powered by the power supply module; the microcontroller module is connected with the human-computer interaction module, the temperature detection module, the wireless communication module, the relay output module and the output voltage adjustable module; the power supply module comprises a second output voltage end for outputting 3.3V working voltage;

the microcontroller module receives temperature data acquired by the temperature detection module, controls the fan coil through the control relay output module and the output voltage adjustable module, and is used for realizing the switching on and off of an air conditioner, the switching of a refrigeration and heating mode and the adjustment of air speed; the human-computer interaction module is used for locally realizing control over the fan coil, and the wireless communication module is used for remotely communicating with the microcontroller module;

the microcontroller module comprises a control chip, an eleventh resistor and a fourth capacitor, wherein one end of the eleventh resistor is connected with the second output voltage end, the other end of the eleventh resistor is connected with a pin 7 of the control chip, and the other end of the eleventh resistor is grounded through the fourth capacitor;

the output voltage adjustable module comprises a two-stage RC filter circuit and an in-phase amplifying circuit, the in-phase amplifying circuit comprises an LM358 chip, a first zero resistor, a first zero-first resistor, a fifth zero resistor, a second eight capacitor, a second nine capacitor and a first six voltage stabilizing diode, the input end of the two-stage RC filter circuit is connected with a pin 29 of the control chip, the output end of the two-stage RC filter circuit is connected with a pin 5 of the LM358 chip, a first zero-first resistor is connected between a pin 6 and a pin 7 of the LM358 chip, the pin 6 of the LM358 chip is connected with one end of the first zero resistor, the other end of the first zero resistor is grounded, the pin 7 of the LM358 chip is connected with one end of the fifth zero resistor, the other end of the fifth zero resistor is respectively connected with one end of the second eight capacitor, one end of the second nine capacitor and the negative electrode end of the first six voltage stabilizing diode, the other end of the second eight capacitor, the other end of the second nine capacitor and the positive electrode end, the other end of the fifth zero resistor is used as an output end of the output voltage adjustable module to output the analog voltage within the range of 0-10V.

Preferably, the power supply module comprises an isolated AC-DC conversion circuit and a linear voltage stabilization chip, wherein the isolated AC-DC conversion circuit is used for converting 220V alternating current into 5V direct current voltage; the linear voltage stabilizing chip is used for converting 5V voltage output by the isolated AC-DC conversion circuit into 3.3V working voltage required by other module circuits, and the power supply module comprises a first output voltage end for outputting 5V direct current voltage and a second output voltage end for outputting 3.3V working voltage.

Preferably, the isolated AC-DC conversion circuit includes an RPD3W05E701S chip, the power module further includes a first fuse, a ninth resistor, a third polar capacitor, a first zener diode, a first capacitor, a second capacitor, and a third zero capacitor, a live wire terminal of 220V AC voltage is connected in series with the first fuse and the ninth resistor in sequence, and then connected to a 3 pin of the RPD3W05E701S chip, a 4 pin of the RPD3W05E701S chip is connected to a zero line terminal of 220V AC voltage, a third polar capacitor, a first zener diode, and a third zero capacitor are connected in parallel between a 1 pin and a 2 pin of the RPD3W05E701S chip, a 2 pin of the RPD3W05E701S chip is connected to a 2 pin of the linear zener chip, the 2 pin and the 3 pin of the linear zener chip are grounded through the first capacitor and the second capacitor, respectively, and the 1 pin of the linear zener chip is grounded; the pin 2 of the RPD3W05E701S chip is used as a first output voltage end of the power module, the first output voltage end outputs 5V direct current voltage, the pin 3 of the linear voltage stabilization chip is used as a second output voltage end of the power module, and the second output voltage end outputs 3.3V working voltage.

Preferably, the temperature detection module comprises an NTC thermistor and a voltage follower circuit, and a voltage value obtained by dividing the voltage by the NTC thermistor is transmitted to the microcontroller module through the voltage follower circuit;

the temperature detection module comprises an NTC thermistor, a fifth resistor, a fifth second resistor, a third first capacitor, a third second capacitor, an amplifier chip and a first magnetic bead, wherein a pin 3 of the amplifier chip is connected with one end of the NTC thermistor and one end of the third capacitor which are connected in parallel, the other end of the NTC thermistor and the other end of the third capacitor which are connected in parallel are grounded, the pin 3 of the amplifier chip is connected with a pin 8 of the amplifier chip through the fifth resistor, the pin 8 of the amplifier chip is grounded through the third capacitor, the pin 8 of the amplifier chip is connected with a second output voltage end through the first magnetic bead, the pin 1 and the pin 2 of the amplifier chip are connected, the pin 1 of the amplifier chip is grounded through the fifth second resistor, the pin 1 of the amplifier chip is connected with a pin 17 of the control chip, and the pin 4 of the amplifier chip is grounded.

Preferably, the relay output module comprises two control circuits with the same structure and is used for controlling a cold and hot valve of the fan coil; the microcontroller module performs on-off control on the 2-path relay through 2 triodes;

the first path of control circuit comprises a fifth resistor, a fifth third resistor, a first triode, a third diode and a first relay, wherein the base electrode of the first triode is connected with the input end of the first path of control circuit, namely a cold input control end, the cold input control end is connected with a pin 33 of the control chip, the base electrode of the first triode is connected with the emitting electrode of the first triode through the fifth resistor, the emitting electrode of the first triode is grounded, the collector electrode of the first triode is connected with a pin 2 of the first relay, a pin 2 of the first relay is connected with the positive electrode end of the third diode, the negative electrode end of the third diode is connected with a pin 1 of the first relay and a first output voltage end, a pin 5 of the first relay is connected with a live wire joint of 220V alternating voltage, and a pin 3 of the first relay serves as the output end of the first path of control circuit, namely the cold output control end;

the second control circuit has the same structure as the first control circuit, the input end of the second control circuit is a heat input control end, the heat input control end is connected with a pin 32 of the control chip, and the output end of the second control circuit is a heat output control end.

Preferably, the human-computer interaction module comprises a liquid crystal display screen, a touch key, a key indicator lamp and a buzzer, the liquid crystal display screen, the touch key, the key indicator lamp and the buzzer are all connected with the microcontroller module, the liquid crystal display screen is connected to the microcontroller module (1) through an HT1621B driving chip, and the touch key is connected to the microcontroller module (1) through a BS816 touch chip.

Preferably, the liquid crystal display screen includes a second chip, an HT1621 driving chip, a fifth eighth resistor, a fifth ninth resistor, a sixth zero resistor, a sixth first resistor, a sixth second resistor, a third capacitor, and a second zero voltage regulator diode, pins 1 to 18 of the second chip are respectively connected to pins 21 to 24, 8 to 1, and 48 to 43 of the HT1621 driving chip, pin 16 of the HT1621 driving chip is connected to pin 17 of the HT1621 driving chip through the sixth resistor, pin 17 of the HT1621 driving chip is grounded through the third capacitor, pin 17 of the HT1621 driving chip is connected to one end of the sixth second resistor, the other end of the sixth second resistor is respectively connected to a second output voltage end and a negative end of the second zero voltage regulator diode, and a positive end of the second zero voltage regulator diode is grounded;

pins

9, 11 and 12 of the HT1621 driver chip are connected to the second output voltage terminal through a fifth eighth resistor, a fifth ninth resistor and a sixth zero resistor, respectively, and

pins

9, 11 and 12 of the HT1621 driver chip are connected to

pins

27, 26 and 25 of the control chip, respectively.

Preferably, the buzzer comprises a first fourth resistor, a first fifth resistor, a third triode, a fifth diode and a first buzzer, a base of the third triode is connected with a pin 28 of the control chip through the first fourth resistor, a base of the third triode is connected with a collector of the third triode through the first fifth resistor, a collector of the third triode is grounded, an emitter of the third triode is respectively connected with a positive terminal of the fifth diode and a pin K of the first buzzer, and a negative terminal of the fifth diode is connected with a pin a of the first buzzer after being short-circuited with each other and then connected with the second output voltage terminal.

Preferably, the touch keys comprise a BS816 touch chip, a second magnetic bead, a first third capacitor, a first fourth capacitor, a first sixth capacitor, a first seventh capacitor, a first eighth capacitor, a first ninth capacitor, a second zero capacitor and first to fifth keys, pins 12 to 16 of the BS816 touch chip are respectively connected with a pin 22, a pin 21, a pin 20, a pin 19 and a pin 18 of the control chip, a pin 9 of the BS816 touch chip is connected with one end of the first third capacitor and one end of the first fourth capacitor which are connected in parallel, the other end of the first third capacitor and the other end of the first fourth capacitor which are connected in parallel are connected with a pin 10 of the BS816 touch chip, a pin 9 of the BS816 touch chip is grounded, and the pin 10 of the BS816 touch chip is connected with a second output voltage end through the second magnetic bead; the first to fifth keys are respectively connected with pins 5 to 1 of the BS816 touch chip, and the first to fifth keys are respectively grounded through a first sixth capacitor, a first seventh capacitor, a first eighth capacitor, a first ninth capacitor and a second zero capacitor.

Preferably, the wireless communication module is used for 2.4G wireless communication.

Has the advantages that:

1. the utility model discloses in, the user both can control the air conditioner locally through man-machine interaction module, also can carry out remote control through wireless communication module through the wireless transceiver that gateway or other bind.

2. In the utility model, the temperature detection module detects the indoor temperature in real time and uploads the indoor temperature to the microcontroller module, and the microcontroller module compares and judges the real-time temperature data with the target temperature set by the user after acquiring the real-time temperature data, and then controls the fan coil through the relay output module and the output voltage adjustable module, thereby realizing the switching on and off, the switching of the refrigeration and heating modes, the wind speed adjustment and the like of the air conditioner;

3. the utility model discloses both can regard as independent controller control fan coil linkage, also can carry out the networking of thing networking. Due to the adoption of a 2.4G wireless communication mode, the system can be conveniently linked with other intelligent equipment or terminals, and intelligent applications such as personalized scene customization and the like are realized.

Drawings

FIG. 1 is a block diagram of the present invention;

FIG. 2 is a circuit configuration diagram of an LCD panel in an embodiment;

FIG. 3 is a circuit configuration diagram of a buzzer in the embodiment;

FIG. 4 is a circuit diagram of a touch key in an embodiment;

FIG. 5 is a circuit diagram of a key indicator in an embodiment;

FIG. 6 is a circuit configuration diagram of a temperature detection module in an embodiment;

FIG. 7 is a circuit configuration diagram of a relay output module in the embodiment;

FIG. 8 is a circuit diagram of an embodiment of an output voltage adjustable module;

FIG. 9 is a circuit configuration diagram of a power supply module in the embodiment;

fig. 10 is a circuit configuration diagram of a microcontroller module in an embodiment.

Detailed Description

The invention will be further explained and explained with reference to the drawings.

Examples

As shown in fig. 1, a wireless temperature control panel with adjustable output voltage, including microcontroller module 1, human-computer interaction module 2, temperature detection module 3, wireless communication module 4, relay output module 5, output voltage adjustable module 6 and power module 7, power module 7 is microcontroller module 1, human-computer interaction module 2, temperature detection module 3, wireless communication module 4, power is supplied to relay output module 5 and output voltage adjustable module 6, microcontroller module 1y is connected with human-computer interaction module 2, temperature detection module 3, wireless communication module 4, relay output module 5 and output voltage adjustable module 6. The utility model discloses in, the user both can control the air conditioner locally through man-machine interaction module, also can carry out remote control through wireless communication module through the wireless transceiver that gateway or other bind.

As shown in fig. 10, the control chip of the microcontroller module 1 adopts a control chip U6, the specific model is a main stream chip STM32F031C6T6 of the M0 series of the ideological semiconductor corporation, and the chip has rich peripheral interfaces, high processing speed and stable performance, and is widely applied to various aspects such as industry, consumer electronics and the like.

The microcontroller module 1 receives temperature data collected by the temperature detection module 3, controls the fan coil through the control relay output module 5 and the output voltage adjustable module 6, and is used for realizing the switching on and off of an air conditioner, the switching of a refrigeration and heating mode and the adjustment of air speed; the human-computer interaction module 2 is used for locally realizing control over the fan coil, and the wireless communication module 4 is used for remotely communicating with the microcontroller module 1; the microcontroller module 1 comprises a control chip U6, an eleventh resistor R11 and a fourth capacitor C4, wherein one end of the eleventh resistor R11 is connected to the second output voltage terminal Vout _2, the other end of the eleventh resistor R11 is connected to the pin 7 of the control chip U6, and the other end of the eleventh resistor R11 is further connected to ground through the fourth capacitor C4.

The human-computer interaction module 2 comprises a liquid crystal display screen, a touch key, a key indicator light and a buzzer. Liquid crystal display is connected to microcontroller module 1's SPI interface through driver chip HT1621B, and the touch button is connected to microcontroller module 1's GPIO interface through touch chip BS816, and simultaneously, key indicator light lug connection to microcontroller module 1's GPIO interface, microcontroller module 1 passes through triode control bee calling organ. The liquid crystal display screen is specially used for customizing a display interface and can display rich information such as temperature, modes, wind speed and the like. The touch key adopts the touch spring, and the touch sensitivity is high, promotes operation experience.

As shown in fig. 2, the lcd includes a second chip U2, an HT1621 driving chip U3, a fifth eighth resistor R58, a fifth ninth resistor R59, a sixth zero resistor R60, a sixth resistor R61, a sixth second resistor R62, a third capacitor C33, and a second zero zener diode D20, pins 1 to 18 of the second chip U2 are connected to pins 21 to 24, pins 8 to 1, and pins 48 to 43 of the HT1621 driving chip U3, pin 16 of the HT1621 driving chip U3 is connected to pin 17 of the HT1621 driving chip U3 through the sixth resistor R61, pin 17 of the HT1621 driving chip U3 is grounded through the third capacitor C33, pin 17 of the HT1621 driving chip U3 is connected to one end of a sixth second resistor R62, and the other end of the sixth resistor R3 is connected to the positive terminal of the second zero zener diode Vout 2, the negative terminal of the second zero zener diode 20, and the negative terminal of the second zero zener diode 20; the

pins

9, 11 and 12 of the HT1621 driving chip U3 are connected to the second output voltage terminal Vout _2 through a fifth eight resistor R58, a fifth nine resistor R59 and a sixth zero resistor R60, respectively, and the

pins

9, 11 and 12 of the HT1621 driving chip U3 are connected to the LCD _ CS port, the LCD _ WR port and the LCD _ DATA port, respectively, that is, the

pins

27, 26 and 25 of the control chip U6. The liquid crystal display screen performs DATA interaction with the microcontroller module 1 through an LCD _ CS port, an LCD _ WR port and an LCD _ DATA port.

As shown in fig. 3, the buzzer includes a first four resistor R14, a first five resistor R15, a third triode Q3, a fifth diode D5 and a first buzzer T1, a base of the third triode Q3 is connected to an SPK port, i.e., the pin 28 of the control chip U6, through the first four resistor R14, and the microcontroller module 1 controls the operation of the buzzer through the SPK port of the control chip U6; the base of the third triode Q3 is connected with the collector of the third triode Q3 through a first fifth resistor R15, the collector of the third triode Q3 is grounded, the emitter of the third triode Q3 is respectively connected with the positive terminal of the fifth diode D5 and the pin K of the first buzzer T1, and the negative terminal of the fifth diode D5 is connected with the second output voltage terminal Vout _2 after being shorted with the pin a of the first buzzer T1.

As shown in fig. 4, the touch key includes a BS816 touch chip U5, a second magnetic bead FB2, a first third capacitor C13, a first fourth capacitor C14, a first sixth capacitor C16, a first seventh capacitor C17, a first eighth capacitor C18, a first ninth capacitor C19, a second zero capacitor C20, and first to fifth keys P1: the P5 and the BS816 touch the pins 12 to 16 of the chip U5 and are respectively connected with the pin 22, the pin 21, the pin 20, the pin 19 and the pin 18 of the control chip U6, and the microcontroller module 1 controls the touch keys through the pin 22, the pin 21, the pin 20, the pin 19 and the pin 18 of the control chip U6; a pin 9 of the BS816 touch chip U5 is connected to one end of a first third capacitor C13 and one end of a first fourth capacitor C14 which are connected in parallel, the other end of the first third capacitor C13 and the other end of the first fourth capacitor C14 which are connected in parallel are connected to a pin 10 of a BS816 touch chip U5, the pin 9 of the BS816 touch chip U5 is grounded, and the pin 10 of the BS816 touch chip U5 is connected to a second output voltage terminal Vout _2 through a second magnetic bead FB 2; first to fifth keys P1: p5 are connected to pins 5 to 1 of the BS816 touch chip U5, respectively, and the first to fifth keys P1: the P5 is grounded through a sixth capacitor C16, a seventh capacitor C17, an eighth capacitor C18, a ninth capacitor C19 and a zero capacitor C20.

As shown in fig. 5, the key indicator includes a first zero led D10, a first led D11, a first second led D12, a first third led D13, a first fourth led D14, a second eight resistor R28, a second nine resistor R29, a third zero resistor R30, a third resistor R31, and a third second resistor R32, an LW1 port is connected to the positive terminal of the first zero led D10 through the second eight resistor R28, an LW2 port is connected to the positive terminal of the first led D11 through the second nine resistor R29, an LW3 port is connected to the positive terminal of the second zero led D12 through the third zero resistor R30, an LW 12 port is connected to the positive terminal of the first three led D12 through the third resistor R12, and an LW 12 port is connected to the positive terminals of the first zero led D12 and the first led D12 through the second zero resistor R12, and the first led D12, The negative terminals of the first two light emitting diodes D12, the first three light emitting diodes D13 and the first four light emitting diodes D14 are grounded. The LW1 port to the LW5 port are respectively connected to pins 39 to 43 of the control chip U6, the microcontroller module 1 controls the key indicator through the pins 39 to 43 of the control chip U6, and if the pin 39 outputs a high level, the LW1 port obtains a high level voltage, and at this time, the first zero light emitting diode D10 is turned on, which indicates that the key indicator of this portion is working, and the other portions are the same as the above.

The temperature detection module 3 adopts an NTC thermistor as a temperature sensing element and is matched with an optimized temperature curve table, so that the temperature measurement precision reaches +/-0.5 ℃. Meanwhile, in order to further improve the temperature measurement accuracy, a voltage follower circuit is added, and a voltage value obtained by voltage division of the NTC thermistor is directly sent to the microcontroller module 1 through the voltage follower circuit.

As shown in fig. 6, the temperature detecting module 3 includes an NTC thermistor R54, a fifth resistor R51, a fifth resistor R52, a third capacitor C31, a third capacitor C32, an amplifier chip U1A, and a first magnetic bead FB1, a pin 3 of the amplifier chip U1A is connected to one end of the NTC thermistor R54 and the third capacitor C31 connected in parallel, the other end of the NTC thermistor R54 and the third capacitor C31 connected in parallel is grounded, a pin 3 of the amplifier chip U1A is connected to a pin 8 of the amplifier chip U1A through the fifth resistor R51, a pin 8 of the amplifier chip U1A is grounded through the third capacitor C32, a pin 8 of the amplifier chip U1A is connected to a second output voltage terminal Vout _2 through the first FB1, a pin 1 and a pin 2 of the amplifier chip U1A are connected, a pin 1 of the amplifier chip U1A is connected to a pin T828653 as an output terminal of the ADC chip 8417, that is, the microcontroller module 1 obtains the temperature information sent by the temperature detection module 3 through the pin 17 of the control chip U6, and the pin 4 of the amplifier chip U1A is grounded.

The microcontroller module 1 is connected with the wireless communication module 4 through an SPI synchronous serial bus. The wireless communication module 4 is used for 2.4G wireless communication, works in the global application-free ISM frequency range and has high communication speed. In order to increase the wireless communication distance, the wireless communication module 4 selects a communication unit with a power amplifier, and a high-gain copper tube antenna is additionally arranged, so that the indoor communication distance reaches 50 meters. The utility model discloses in, the user both can control the air conditioner locally through man-machine interaction module, also can carry out remote control through wireless communication module through the wireless transceiver that gateway or other bind. The utility model discloses both can regard as independent controller control fan coil linkage, also can carry out the networking of thing networking. Due to the adoption of a 2.4G wireless communication mode, the system can be conveniently linked with other intelligent equipment or terminals, and intelligent applications such as personalized scene customization and the like are realized. Particularly, the utility model discloses a wireless communication module binds with intelligent gateway, and the user can set for the timing switch machine of temperature control panel as required, gateway such as sleep temperature curve will be set for the data with radio communication's mode download the utility model discloses in.

The relay output module 5 comprises two control circuits with the same structure, and the relays used in the control circuits are all 10A relays and are used for controlling cold and hot valve valves of the fan coil. The microcontroller module 1 controls the 2-path relay to be switched on and off through 2 triodes.

As shown in fig. 7, the first control circuit includes a fifth resistor R55, a fifth resistor R53, a first transistor Q1, a third diode D3 and a first relay K1, a base of the first transistor Q1 is connected to an input terminal of the first control circuit, i.e., a Cold input control terminal Ctr _ Cold, through the fifth resistor R55, the Cold input control terminal Ctr _ Cold is connected to a pin 33 of the control chip U6, a base of the first transistor Q1 is connected to an emitter of the first transistor Q1 through a fifth resistor R53, an emitter of the first transistor Q1 is grounded, a collector of the first transistor Q1 is connected to a 2-pin of the first relay K1, a 2-pin of the first relay K1 is connected to a positive terminal of the third diode D3, a negative terminal of the third diode D3 is connected to a 1-pin of the first relay K1 and a first output voltage terminal Vout _1, a voltage terminal of the first relay K1 is connected to an AC voltage terminal 220V _ L of the AC relay K1, a pin 3 of the first relay K1 is used as an output end of the first path of control circuit, namely a COLD output control end COLD;

the second path of control circuit has the same structure as the first path of control circuit, the input end of the second path of control circuit is a heat input control end Ctr _ Hot, the heat input control end Ctr _ Hot is connected with a pin 32 of a control chip U6, and the output end of the second path of control circuit is a heat output control end HOT;

the second way control circuit comprises a fifth sixth resistor R56, a fifth seventh resistor R57, a second triode Q2, a fourth diode D4 and a second relay K2, the base of the second triode Q2 is connected with the input end of the second way control circuit, namely a heat input control end Ctr _ Hot through a fifth sixth resistor R56, the heat input control end Ctr _ Hot is connected with the pin 32 of the control chip U6, the base of the second triode Q2 is connected with the emitter of the second triode Q2 through a fifth seventh resistor R57, the emitter of the second triode Q2 is grounded, the collector of the second triode Q2 is connected with the 2 pin of the second relay K2, the 2 pin of the second relay K2 is connected with the positive terminal of the fourth diode D4, the negative terminal of the fourth diode D4 is connected with the 1 pin of the second relay K2 and the first output voltage Vout _1, the pin of the second relay K2 is connected with the 220V alternating current voltage joint 4, and the live wire joint 363 of the second way control circuit is used as the second relay K363, i.e. the heat output control terminal HOT.

As can be seen from the above circuit structure, the microcontroller module 1 controls two control circuits with the same structure through the pin 33 and the pin 32 of the control chip U6, respectively, so as to control the relay accordingly.

The output voltage adjustable module 6 comprises a two-stage RC filter circuit and a same-phase amplifying circuit formed by LM 358. The microcontroller module 1 outputs a PWM signal with a certain frequency, the PWM signal is converted into an analog voltage with a certain amplitude through a two-stage RC filter circuit, and the analog voltage is amplified through an amplifying circuit and finally converted into an analog voltage of 0-10V to be output externally. By adjusting the duty ratio of the PWM signal, analog voltages with different amplitudes can be output.

As shown in fig. 8, the output voltage adjustable module 6 includes a two-stage RC filter circuit and an in-phase amplifier circuit, the in-phase amplifier circuit includes an LM358 chip U7B, a first zero-resistance R100, a first zero-resistance R101, a fifth zero-resistance R4, a second eight-capacitance C28, a second nine-capacitance C29 and a first six-voltage regulator diode D16, an input terminal of the two-stage RC filter circuit is connected to a pin 29 of a control chip U6, the pin 29 of the control chip U6 outputs a PWM signal, an output terminal of the two-stage RC filter circuit is connected to a pin 5 of the LM358 chip U7B, a first zero-resistance R101 is connected between pins 6 and 7 of the LM358 chip U7B, a pin 6 of the LM358 chip U7B is connected to one end of the first zero-resistance R100, the other end of the first zero-resistance R100 is grounded, a pin 7 of the LM chip U7B is connected to one end of the fifth zero-resistance R50, the other end of the fifth zero-resistance R50 is connected to a negative terminal 8945 of the second eight-capacitance C29 and the negative terminal of the sixth voltage regulator diode D4636, the other end of the second eighth capacitor C28, the other end of the second ninth capacitor C29 and the positive terminal of the first sixth zener diode D16 are grounded, and the other end of the fifth zero resistor R50 is used as the output end of the output voltage adjustable module 6 to output an analog voltage in the range of 0-10V.

The two-stage RC filter circuit comprises a fourth eight resistor R48, a fourth nine resistor R49, a second five capacitor R25 and a second six capacitor R26; one end of a fourth eight resistor R48 is used as an input end of the two-stage RC filter circuit and is connected with the PWM signal, the other end of the fourth eight resistor R48 is respectively connected with one end of a fourth nine resistor R49 and one end of a second five capacitor R25, the other end of the second five capacitor R25 is grounded, the other end of the fourth nine resistor R49 is connected with one end of a second six capacitor R26, and the other end of the second six capacitor R26 is grounded.

The utility model discloses in, the temperature detection module real-time detection indoor temperature is uploaded and is given microcontroller module, and after microcontroller module gathered real-time temperature data, the target temperature who sets for with the user contrasts the judgement, then through relay output module, the adjustable module control fan coil of output voltage, realizes the switching on and shutting down of air conditioner, refrigeration heating mode switching, wind speed regulation etc..

The power module 7 adopts an isolation type AC-DC conversion circuit with higher safety, can be directly powered by 220V alternating current and outputs 5V direct current voltage. In order to improve stability and reliability, protective devices such as fuses, NTC thermistors, TVS tubes and the like are added at the front and rear stages of the AC-DC conversion circuit. The power module 7 further comprises a linear voltage stabilizing chip for converting the 5V voltage output by the AC-DC conversion circuit into a 3.3V working voltage required by other module circuits.

As shown in fig. 9, the power module 7 includes an isolated AC-DC conversion circuit and a linear voltage regulation chip, where the isolated AC-DC conversion circuit is used to convert 220V AC power into 5V DC voltage; the linear voltage stabilizing chip is used for converting 5V voltage output by the isolated AC-DC conversion circuit into 3.3V working voltage, and the power supply module 7 comprises a first output voltage end Vout _1 for outputting 5V direct current voltage and a second output voltage end Vout _2 for outputting 3.3V working voltage.

The isolated AC-DC conversion circuit comprises an RPD3W05E701S chip U4, the power module 7 further comprises a first fuse F1, a ninth resistor R9, a third polar capacitor C3, a first voltage stabilizing diode D1, a first capacitor C1, a second capacitor C2 and a live wire connector AC _ L of a third zero capacitor C30,220V alternating voltage, the live wire connector AC _ L is sequentially connected in series with the first fuse F1 and the ninth resistor R9 and then connected with the 3 pin of the RPD3W05E701S chip U4, the 4 pin of the RPD3W05E701S chip U4 is connected with a neutral wire connector AC _ N of a 220V alternating voltage, the third polar capacitor C3, the first voltage stabilizing diode D1 and the third zero capacitor C30 are connected in parallel between the 1 pin and the 2 pin of the RPD3W 701E S chip U4, the first polar capacitor C1 and the third zero capacitor C30 are connected in parallel between the 1 pin and the 2 pin of the RPD3W05E 4 chip U, the linear voltage stabilizing chip U2 pin is connected with the first voltage stabilizing capacitor C1 and the second polar pin 863C chip C8653 through the first voltage stabilizing capacitor C1; pin 2 of the chip U4 of the RPD3W05E701S is used as a first output voltage terminal Vout _1 of the power module 7, the first output voltage terminal Vout _1 outputs a 5V dc voltage, pin 3 of the linear regulator chip is used as a second output voltage terminal Vout _2 of the power module 7, and the second output voltage terminal Vout _2 outputs a 3.3V working voltage.

The above description is only a preferred embodiment of the present invention, and it should be noted that: for those skilled in the art, without departing from the principle of the present invention, several improvements and modifications can be made, and these improvements and modifications should also be considered as the protection scope of the present invention.

Claims

1. The utility model provides an output voltage adjustable wireless temperature control panel which characterized in that includes: the system comprises a power module (7), a microcontroller module (1) powered by the power module (7), a human-computer interaction module (2), a temperature detection module (3), a wireless communication module (4), a relay output module (5) and an output voltage adjustable module (6); the microcontroller module (1) is connected with the human-computer interaction module (2), the temperature detection module (3), the wireless communication module (4), the relay output module (5) and the output voltage adjustable module (6); the power supply module (7) comprises a second output voltage end (Vout _ 2) for outputting 3.3V working voltage;

the microcontroller module (1) receives temperature data collected by the temperature detection module (3), and controls the fan coil through the control relay output module (5) and the output voltage adjustable module (6) to realize the switching of the on/off, the refrigeration and heating modes and the air speed adjustment of the air conditioner; the human-computer interaction module (2) is used for locally realizing control over the fan coil, and the wireless communication module (4) is used for remotely communicating with the microcontroller module (1);

the microcontroller module (1) comprises a control chip (U6), an eleventh resistor (R11) and a fourth capacitor (C4), wherein one end of the eleventh resistor (R11) is connected with a second output voltage end (Vout _ 2), the other end of the eleventh resistor (R11) is connected with a pin 7 of the control chip (U6), and the other end of the eleventh resistor (R11) is grounded through the fourth capacitor (C4);

the output voltage adjustable module (6) comprises a two-stage RC filter circuit and an in-phase amplifying circuit, the in-phase amplifying circuit comprises an LM358 chip (U7B), a first zero resistance (R100), a first zero resistance (R101), a fifth zero resistance (R50), a second eight capacitor (C28), a second nine capacitor (C29) and a first six voltage stabilizing diode (D16), the input end of the two-stage RC filter circuit is connected with a pin 29 of a control chip (U6), the output end of the two-stage RC filter circuit is connected with a pin 5 of the LM358 chip (U7B), a first zero resistance (R101) is connected between a pin 6 and a pin 7 of the LM358 chip (U7B), a pin 6 of the LM358 chip (U7B) is connected with one end of the first zero resistance (R100), the other end of the first zero resistance (R100) is grounded, a pin 7 of the LM358 chip (U7B) is connected with one end of the fifth zero resistance (R358), and the other end of the fifth zero resistance (R50) are respectively connected with one end of the eighth capacitor (C28), One end of a second nine capacitor (C29) and the negative electrode end of the first six voltage stabilizing diode (D16), the other end of a second eight capacitor (C28), the other end of the second nine capacitor (C29) and the positive electrode end of the first six voltage stabilizing diode (D16) are grounded, and the other end of a fifth zero resistor (R50) is used as the output end of the output voltage adjustable module (6) to output the analog voltage in the range of 0-10V.

2. The wireless temperature control panel with adjustable output voltage of claim 1, wherein: the power supply module (7) comprises an isolated AC-DC conversion circuit and a linear voltage stabilizing chip, wherein the isolated AC-DC conversion circuit is used for converting 220V alternating current into 5V direct current voltage; the linear voltage stabilizing chip is used for converting 5V voltage output by the isolated AC-DC conversion circuit into 3.3V working voltage, and the power supply module (7) comprises a first output voltage end (Vout _ 1) for outputting 5V direct current voltage and a second output voltage end (Vout _ 2) for outputting 3.3V working voltage.

3. The wireless temperature control panel with adjustable output voltage of claim 2, wherein: the isolated AC-DC conversion circuit comprises an RPD3W05E701S chip (U4), a power module (7) further comprises a first fuse (F1), a ninth resistor (R9), a third polar capacitor (C3), a first voltage stabilizing diode (D1), a first capacitor (C1), a second capacitor (C2) and a third zero capacitor (C30), a live wire joint (AC _ L) of 220V alternating voltage is sequentially connected in series with the first fuse (F1) and the ninth resistor (R9) and then connected with a pin 3 of the RPD3W05E S chip (U4), a pin 4 of the RPD3W05E701S chip (U4) is connected with a zero line joint (AC _ N) of the 220V alternating voltage, a third polar capacitor (C3), a first polar capacitor (C1) and a third polar capacitor (C1) are connected in parallel between a pin 1 and a pin 2 of the RPD3W05E S chip (U465), and a third polar capacitor (C592) is connected with a pin 593C 592 of the RPD3W 593E 701 chip (U593), and a third polar capacitor (C593) are connected with a pin 593C 599) through a pin 593 pin, The second capacitor (C2) is grounded, and the pin 1 of the linear voltage stabilizing chip is grounded; pin 2 of the RPD3W05E701S chip (U4) serves as a first output voltage terminal (Vout _ 1) of the power module (7), the first output voltage terminal (Vout _ 1) outputs a 5V dc voltage, pin 3 of the linear regulator chip serves as a second output voltage terminal (Vout _ 2) of the power module (7), and the second output voltage terminal (Vout _ 2) outputs a 3.3V operating voltage.

4. The wireless temperature control panel with adjustable output voltage of claim 2, wherein: the temperature detection module (3) comprises an NTC thermistor and a voltage follower circuit, and a voltage value obtained by dividing the voltage of the NTC thermistor is transmitted to the microcontroller module (1) through the voltage follower circuit;

the temperature detection module (3) comprises an NTC thermistor (R54), a fifth resistor (R51), a fifth second resistor (R52), a third capacitor (C31), a third second capacitor (C32), an amplifier chip (U1A) and a first magnetic bead (FB 1), wherein a pin 3 of the amplifier chip (U1A) is connected with one end of the NTC thermistor (R54) and one end of the third capacitor (C31) which are connected in parallel, the other ends of the NTC thermistor (R54) and the third capacitor (C31) which are connected in parallel are grounded, a pin 3 of the amplifier chip (U1A) is connected with a pin 8 of the amplifier chip (U1A) through the fifth resistor (R51), a pin 8 of the amplifier chip (U1A) is grounded through the third capacitor (C32), a pin 8 of the amplifier chip (U A) is connected with a second output voltage terminal (Vout 2) through the first magnetic bead (FB 1), a pin 8 of the amplifier chip (U1) is connected with a pin 581 and a pin 581 of the amplifier chip (U5731) through the first magnetic bead (U A), pin 1 of the amplifier chip (U1A) is connected to pin 17 of the control chip (U6), and pin 4 of the amplifier chip (U1A) is grounded.

5. The wireless temperature control panel with adjustable output voltage of claim 1, wherein: the relay output module (5) comprises two control circuits with the same structure and is used for controlling a cold and hot valve of the fan coil; the microcontroller module (1) performs on-off control on the 2-path relay through 2 triodes;

the first path of control circuit comprises a fifth resistor (R55), a fifth third resistor (R53), a first triode (Q1), a third diode (D3) and a first relay (K1), the base of the first triode (Q1) is connected with the input end of the first path of control circuit, namely a Cold input control end (Ctr _ Cold) through the fifth resistor (R55), the Cold input control end (Ctr _ Cold) is connected with a pin 33 of a control chip (U6), the base of the first triode (Q1) is connected with the emitter of the first triode (Q1) through the fifth third resistor (R53), the emitter of the first triode (Q1) is grounded, the collector of the first triode (Q1) is connected with a pin 2 of the first relay (K1), a pin 2 of the first relay (K1) is connected with the positive terminal of the third diode (D3), and the negative terminal of the third diode (D3) is connected with a first relay (K1) and a first output terminal (K391) of the first relay (K1), a pin 5 of the first relay (K1) is connected with a live wire connector (AC _ L) of 220V alternating voltage, and a pin 3 of the first relay (K1) is used as an output end of the first path of control circuit, namely a COLD output control end (COLD);

the second path of control circuit has the same structure as the first path of control circuit, the input end of the second path of control circuit is a heat input control end (Ctr _ Hot), the heat input control end (Ctr _ Hot) is connected with a pin 32 of a control chip (U6), and the output end of the second path of control circuit is a heat output control end (HOT).

6. The wireless temperature control panel with adjustable output voltage of claim 2, wherein: the human-computer interaction module (2) comprises a liquid crystal display screen, a touch key, a key indicator lamp and a buzzer, and the liquid crystal display screen, the touch key, the key indicator lamp and the buzzer are all connected with the microcontroller module (1); the liquid crystal display screen is connected to the microcontroller module (1) through a HT1621B driving chip (U3), and the touch keys are connected to the microcontroller module (1) through a BS816 touch chip (U5).

7. The wireless temperature control panel with adjustable output voltage of claim 6, wherein: the liquid crystal display screen comprises a second chip (U2), an HT1621 driving chip (U3), a fifth eight resistor (R58), a fifth nine resistor (R59), a sixth zero resistor (R60), a sixth first resistor (R61), a sixth second resistor (R62), a third capacitor (C33) and a second zero voltage stabilizing diode (D20), pins 1 to 18 of the second chip (U2) are respectively connected with pins 21 to 24, pins 8 to 1 and pins 48 to 43 of the HT1621 driving chip (U3), pin 16 of the HT1621 driving chip (U3) is connected with pin 17 of the HT1621 driving chip (U3) through the sixth resistor (R61), pin 17 of the HT1621 driving chip (U3) is grounded through the third capacitor (C33), pin 17 of the HT1621 driving chip (U3) is connected with one end of the sixth resistor (R62), and the other end of the second resistor (R20) is connected with a second output end Vout _2 of the second zero voltage stabilizing diode (D62), the positive terminal of the second Zener diode (D20) is grounded; pins 9, 11 and 12 of the HT1621 driver chip (U3) are connected to the second output voltage terminal (Vout _ 2) through a fifth eight resistor (R58), a fifth nine resistor (R59) and a sixth zero resistor (R60), respectively, and pins 9, 11 and 12 of the HT1621 driver chip (U3) are connected to pins 27, 26 and 25 of the control chip (U6), respectively.

8. The wireless temperature control panel with adjustable output voltage of claim 6, wherein: the buzzer comprises a first four resistor (R14), a first five resistor (R15), a third triode (Q3), a fifth diode (D5) and a first buzzer (T1), wherein the base of the third triode (Q3) is connected with a pin 28 of a control chip (U6) through the first four resistor (R14), the base of the third triode (Q3) is connected with the collector of the third triode (Q3) through a first five resistor (R15), the collector of the third triode (Q3) is grounded, the emitter of the third triode (Q3) is respectively connected with the positive electrode end of the fifth diode (D5) and a pin K of the first buzzer (T1), and the negative electrode end of the fifth diode (D5) is connected with a pin A of the first buzzer (T1) after being short-circuited with each other and then connected with a second output voltage end (Vout _ 2).

9. The wireless temperature control panel with adjustable output voltage of claim 6, wherein: the touch keys comprise a BS816 touch chip (U5), a second magnetic bead (FB 2), a first third capacitor (C13), a first fourth capacitor (C14), a first sixth capacitor (C16), a first seventh capacitor (C17), a first eighth capacitor (C18), a first ninth capacitor (C19), a second zero capacitor (C20) and first to fifth keys (P1: P5), wherein pins 12 to 16 of the BS816 touch chip (U5) are respectively connected with a pin 22, a pin 21, a pin 20, a pin 19 and a pin 18 of a control chip (U6), a pin 9 of the BS816 touch chip (U5) is connected with one end of the first third capacitor (C13) and one end of the first fourth capacitor (C14) which are connected in parallel, the other ends of the first third capacitor (C13) and the first fourth capacitor (C14) which are connected in parallel are connected with a pin 10 of a BS816 touch chip (U5), a pin 9 of the BS816 touch chip (U5) is grounded, and the pin 10 of the BS816 touch chip (U5) is connected with a second output voltage terminal (Vout _ 2) through a second magnetic bead (FB 2); the first to fifth keys (P1: P5) are respectively connected with pins 5 to 1 of the BS816 touch chip (U5), and the first to fifth keys (P1: P5) are respectively grounded through a first six capacitor (C16), a first seven capacitor (C17), a first eight capacitor (C18), a first nine capacitor (C19) and a second zero capacitor (C20).

10. The wireless temperature control panel with adjustable output voltage of claim 1, wherein: the wireless communication module (4) is used for 2.4G wireless communication.