Air conditioner air volume and temperature controller based on millimeter wave radar and system thereof

Abstract

The utility model provides an air conditioner air volume and temperature controller based on millimeter wave radar and a system thereof, the controller comprises a radar module, an MCU module, an air conditioner control module and a power supply module, the data output end of the radar module is connected with the data input end of the MCU module; the data output end of the MCU module is connected with the data input end of the air conditioner control module; the power supply module is connected with the radar module and the MCU module and supplies power to the radar module and the MCU module. The air conditioner air volume and temperature controller based on the millimeter wave radar provides a solution which is high in privacy protection and high in attention to the comfort degree of an air conditioner user. The breathing activity of multiple people in the environment can be monitored at the same time, the air volume and temperature of the air conditioner can be adjusted in real time, the comfort degree of people using the air conditioner in the environment is improved, and meanwhile privacy of people in the environment is not invaded.

Description

Technical Field

[0001] The utility model relates to the field of intelligent air-conditioning control, in particular to an air-conditioning air volume temperature controller based on millimeter-wave radar and a system thereof. Background Art

[0002] As people's living standards improve, the comfort of air conditioning is becoming more and more important; existing air conditioning intelligent control systems mostly focus on whether there is someone in the current room to adjust the air conditioning switch and wind speed. This adjustment method ignores the state of the human body in the current air-conditioned environment; for multi-person environments that need to use central air conditioning, it is not enough to control the air conditioning only by judging the number of people, because if it is lunch break, although there are many people, they are in the sleep stage and their breathing rate is slow; if people have just come back from outdoors, everyone's breathing rate is very fast. In similar situations, if control is only based on the number of people, it will reduce human comfort. Summary of the invention

[0003] The utility model aims to at least solve the technical problems existing in the prior art, and in particular innovatively proposes an air-conditioning air volume temperature controller based on millimeter-wave radar and a system thereof.

[0004] In order to achieve the above-mentioned purpose of the utility model, the utility model provides an air-conditioning air volume and temperature controller based on millimeter-wave radar, comprising: a radar module, an MCU module, an air-conditioning control module and a power supply module, wherein the data output end of the radar module is connected to the data input end of the MCU module, and the data output end of the MCU module is connected to the data input end of the air-conditioning control module;

[0005] The power supply module is respectively connected to the radar module and the MCU module to provide power for the radar module and the MCU module.

[0006] Furthermore, the radar module transmits the converted data to the main control unit MCU via SPI, where SPI includes four signal lines: CLK, MISO, MOSI and CS.

[0007] Furthermore, the radar module includes:

[0008] The crystal oscillator terminal CLKP of the radar chip U1A and the first end of the crystal oscillator X1 are connected to the first end of the capacitor C1; the second end of the capacitor C1 is connected to the power ground;

[0009] The external clock terminal CLKM of the radar chip U1A and the second end of the crystal oscillator X1 are connected to the first end of the capacitor C2; the second end of the capacitor C2 is connected to the power ground;

[0010] The radar signal output terminal VOUT_PA of the radar chip U1A sends out a radar signal;

[0011] The internal low-dropout linear regulator output terminal VOUT_14APLL of the radar chip U1A is connected to the power supply RADAR_3V3.

[0012] The output terminal VOUT_14SYNTH of the internal low-dropout linear regulator of the radar chip U1A is connected to the power supply RADAR_3V3.

[0013] The bandgap reference output terminal VBGAP of the radar chip U1A is connected to the power supply RADAR_3V3.

[0014] Furthermore, the MCU module includes:

[0015] The startup mode configuration terminal BOOT0 of the microcontroller U2 is connected to the first end of the resistor R3 and the first end of the resistor R6, the second end of the resistor R3 is connected to the power supply 3V3, and the second end of the resistor R6 is connected to the power ground.

[0016] The power monitoring enable terminal PDR_ON of the microcontroller U2 is connected to the first end of the resistor R4 and the first end of the resistor R5, the second end of the resistor R4 is connected to the power supply 3V3, and the second end of the resistor R5 is connected to the power ground.

[0017] The data transmission terminal PC7 of the microcontroller U2 is connected to the second terminal of the infrared emitting module, the first terminal of the infrared emitting module and the first terminal of the capacitor C20 are connected to the power supply 3V3, and the second terminal of the capacitor C20 is connected to the power ground; the data transmission terminal PC10 of the microcontroller U2 is connected to the third terminal of the infrared emitting module, and the air conditioning control module communicates with the air conditioning control board through the infrared emitting module. The fourth terminal of the infrared emitting module is connected to the power ground;

[0018] The external clock input terminal PC14-OSC32_IN of the microcontroller U2 is connected to the first terminal of the crystal oscillator X2 and the first terminal of the capacitor C3.

[0019] The external clock input terminal PC15-OSC32_OUT of the microcontroller U2 is connected to the first end of the crystal oscillator X2 and the first end of the capacitor C4, and the second end of the capacitor C3 and the second end of the capacitor C4 are connected to the power ground;

[0020] The clock signal input terminal PH0-OSC_IN of the microcontroller U2 is connected to the first end of the crystal oscillator X3 and the first end of the resistor R1, the second end of the resistor R1 is connected to the first end of the capacitor C5, and the second end of the capacitor C5 is connected to the power ground;

[0021] The clock signal output terminal PH1-OSC_OUT of the microcontroller U2 is connected to the second end of the crystal oscillator X3 and the first end of the resistor R2, the second end of the resistor R2 is connected to the first end of the capacitor C6, and the second end of the capacitor C6 is connected to the power ground;

[0022] The power supply terminals VDD_5, VDD_12, VDD_4, VDD_6, VDD_7, VDD_1, VDD_8, VDD_2, VDD_10, VDD_11, and VDD_3 of the microcontroller U2 are connected to the power supply VDD_MCU;

[0023] The power supply terminal VDDA of the microcontroller U2 is connected to the first end of the resistor R10, the first end of the capacitor C11, the positive electrode of the polarized capacitor C10, and the first end of the inductor L1. The second end of the inductor L1 is connected to the power supply VDD_MCU; the negative electrode of the polarized capacitor C10 and the second end of the capacitor C11 are connected to the power ground;

[0024] The reference voltage terminal VREF+ of the microcontroller U2 is connected to the first end of the capacitor C13, the positive electrode of the polarized capacitor C12, and the second end of the resistor R10; the negative electrode of the polarized capacitor C12 and the second end of the capacitor C13 are connected to the power ground;

[0025] The power supply terminal VDD_USB of the microcontroller U2 is connected to the first end of the capacitor C16, the positive electrode of the polar capacitor C15, and the first end of the resistor R14, and the second end of the resistor R14 is connected to the power supply VDD_MCU; the negative electrode of the polar capacitor C15 and the second end of the capacitor C16 are connected to the power ground;

[0026] The ground terminals VSS_5, VSS_4, VSS_6, VSS_7, VSS_8, VSS_9, VSS_2, VSS_10, VSS_11, and VSSA_VREF of the microcontroller U2 are connected to the power ground;

[0027] The power supply terminal VBAT of the microcontroller U2 is connected to the first end of the capacitor C14 and the first end of the resistor R12; the second end of the capacitor C14 is connected to the power ground, and the second end of the resistor R12 is connected to the power supply VDD_MCU;

[0028] The external capacitor terminal VCAP2 of the microcontroller U2 is connected to a first terminal of the capacitor C18, and a second terminal of the capacitor C18 is connected to a power ground;

[0029] The external capacitor terminal VCAP1 of the microcontroller U2 is connected to a first terminal of a capacitor C17, and a second terminal of the capacitor C17 is connected to a power ground;

[0030] Furthermore, the power supply module includes:

[0031] The power input terminal Vin of the voltage regulator U3 and the first end of the capacitor C7 are connected to the 5V power supply, the power output terminal Vout of the voltage regulator U3 and the heat dissipation terminal Tab are connected to the first end of the capacitor C8 and the first end of the fuse SB1, the second end of the fuse SB1 is connected to the first end of the capacitor C9 and the first end of the resistor R7, the second end of the fuse SB1 outputs two power supplies, namely the power supply 3V3 and the power supply VDD_MCU, which have the same voltage, the power supply VDD_MCU is used to power the MCU, and the power supply 3V3 is used to power the radar chip; the second end of the resistor R7 outputs the power supply RADAR_3V3; the second end of the capacitor C7, the second end of the capacitor C8, the second end of the capacitor C9, and the ground terminal Gnd of the voltage regulator U3 are connected to the power ground.

[0032] Furthermore, the power supply module also includes:

[0033] The ground terminal GND of the power distribution switch U4 is connected to the power ground;

[0034] The power input terminal IN of the power distribution switch U4 is connected to the USB_5V power supply;

[0035] The enable terminal EN of the power distribution switch U4 is connected to the first terminal of the resistor R15 and the first terminal of the resistor R16; the second terminal of the resistor R16 is connected to the data transmission terminal of the controller U2;

[0036] The fault terminal FAULT of the power distribution switch U4 is connected to the first end of the resistor R9, the first end of the resistor R11, and the negative electrode of the indicator light LD1, the second end of the resistor R9 is connected to the power supply 3V3, and the second end of the resistor R11 is connected to the data transmission end of the controller U2; the positive electrode of the indicator light LD1 is connected to the first end of the resistor R8, and the second end of the resistor R8 is connected to the power supply 3V3;

[0037] The power output terminal OUT of the power distribution switch U4 is connected to the first end of the capacitor C19 to output a 5V power supply, and the second end of the capacitor C19 is connected to the power ground.

[0038] The power distribution switch U4 is used to stabilize the USB_5V power supply of the USB connector CN1 to obtain a 5V power supply.

[0039] Furthermore, the power supply module also includes:

[0040] The power supply terminal VBUS of the USB connector CN1 is connected to the first end of the resistor R13 and the power supply terminal of the microcontroller U2; the second end of the resistor R13 is connected to the power ground;

[0041] The negative end DM of the data line of the USB connector CN1 is connected to the first bidirectional data port IO_1 of the bidirectional thyristor U5.

[0042] The positive end DP of the data line of the USB connector CN1 is connected to the second bidirectional data port IO_2 of the bidirectional thyristor U5.

[0043] The identification terminal ID of the USB connector CN1 is connected to the data transmission terminal of the microcontroller U2;

[0044] The ground terminal GND, the shield terminal Shield, and the extension terminal EXP of the USB connector CN1 are connected to the power ground.

[0045] The power supply is provided through the power supply terminal VBUS of the USB connector CN1 to provide USB_5V power supply.

[0046] Furthermore, the model of the radar chip U1A is IWR6843QAGABL.

[0047] Furthermore, the model of the microcontroller U2 is STM32F413H, the model of the voltage regulator U3 is LD1117S33TR, the model of the power distribution switch U4 is STMPS2141STR, and the model of the bidirectional thyristor U5 is USBLC6-2P6.

[0048] The present invention also proposes an air-conditioning air volume temperature control system based on millimeter-wave radar, wherein the air-conditioning air volume temperature controller based on millimeter-wave radar is arranged on the air-conditioning.

[0049] In summary, due to the adoption of the above technical solutions, the millimeter wave radar-based air conditioning air volume and temperature controller of the utility model provides a solution with high privacy protection and high attention to the comfort of air conditioning users. It can monitor the breathing activities of multiple people in the environment at the same time and adjust the air volume and temperature of the air conditioner in real time, while improving the comfort of the people using the environment, without infringing the privacy of the people in the environment.

[0050] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0051] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0052] Figure 1 It is a flow chart of the utility model air volume temperature controller for air conditioners.

[0053] Figure 2 It is a schematic diagram of the connection relationship between the radar module of the utility model and the MCU.

[0054] Figure 3It is a schematic diagram of the signal processing and data analysis algorithm flow of the utility model.

[0055] Figure 4 It is a control logic schematic diagram of the air-conditioning control module of the utility model.

[0056] Figure 5 It is a circuit connection diagram of the radar module of the utility model.

[0057] FIG. 6 is a schematic diagram of the circuit connection of the MCU main control module of the utility model.

[0058] Figure 7 This is a circuit connection diagram of a USB power supply module of the utility model.

[0059] Figure 8 It is an assembly schematic diagram of the utility model. DETAILED DESCRIPTION

[0060] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0061] The utility model provides an air-conditioning air volume and temperature controller based on millimeter-wave radar and its system. The controller uses 60-64 GHz millimeter-wave radar to transmit electromagnetic waves, receives signals reflected from the tiny movements of multiple people in the environment, extracts breathing information from radar signals through advanced signal processing and data analysis algorithms to measure breathing frequency, and controls the air volume and temperature of the air conditioner according to the average breathing frequency of multiple people in the environment. Figure 1 As shown:

[0062] First, the millimeter-wave radar module transmits electromagnetic waves to the personnel in the detection space environment and receives the echo;

[0063] Then: the echo data sampled by the radar module is transmitted to the MCU, and the MCU analyzes and processes the data to calculate the respiratory frequency information contained in the signal;

[0064] Finally, the air conditioning control module determines whether the breathing frequency exceeds or falls below the set threshold, thereby adjusting the air volume and temperature of the air conditioner.

[0065] The radar module transmits millimeter wave signals through the TX antenna, and the RX antenna receives the reflected signals. The A / D converter in the module converts the received analog signals into digital signals for subsequent signal processing and analysis. The connection relationship between the radar module and the MCU is as follows: Figure 2As shown in the figure, the radar module transmits the converted data to the main control unit MCU through the SPI module. The SPI module includes four main signal lines: CLK, MISO, MOSI, and CS.

[0066] The MCU is mainly responsible for processing the data transmitted by the radar module through an efficient algorithm to calculate the breathing information contained in the signal. The algorithm processing flow is as Figure 3 follows: By analyzing the reflected signal received by the radar (such as the signal reflected from the human chest or abdomen), signal processing techniques (such as FFT transformation, phase extraction, etc.) are used to extract the breathing phase information and further estimate the breathing rate, that is, the breathing frequency.

[0067] The air conditioner control module mainly adjusts the air volume and temperature of the air conditioner by judging whether the breathing frequency exceeds or is lower than the set threshold. Its specific control logic is as Figure 4 shown:

[0068] S01, judge whether the detected breathing rate (frequency) B is within the range of the threshold [B1, B2]. If it is, keep the current air volume and temperature; if not, judge the range of B again;

[0069] S01, if B < B1, judge the current working mode of the air conditioner. When the working mode is heating, reduce the air volume and keep the temperature; when the working mode is cooling, reduce the air volume and keep the temperature;

[0070] If B > B2, judge the current working mode of the air conditioner. When the working mode is heating, reduce the air volume and reduce the temperature; when the working mode is cooling, increase the air volume and reduce the temperature;

[0071] The specific circuit diagram of the air conditioner air temperature control system is as Figure 5 to Figure 7 shown.

[0072] Figure 5 This is the circuit connection schematic diagram of the radar module of the present utility model: The crystal oscillation terminal CLKP of the radar chip U1A, the first end of the crystal oscillator X1 and the first end of the capacitor C1 are connected; the second end of the capacitor C1 is connected to the power ground;

[0073] The external clock terminal CLKM of the radar chip U1A, the second end of the crystal oscillator X1 and the first end of the capacitor C2 are connected; the second end of the capacitor C2 is connected to the power ground;

[0074] The radar signal output terminal VOUT_PA of the radar chip U1A emits the amplified radar signal. Through power amplification, the radar system can achieve target detection and tracking at a farther distance, improving the detection ability and communication efficiency of the radar.

[0075] The internal low-dropout linear regulator output terminal VOUT_14APLL of the radar chip U1A is connected to the power supply RADAR_3V3.

[0076] The output terminal VOUT_14SYNTH of the internal low-dropout linear regulator of the radar chip U1A is connected to the power supply RADAR_3V3.

[0077] The bandgap reference output terminal VBGAP of the radar chip U1A is connected to the power supply RADAR_3V3;

[0078] The preferred model of radar chip U1A is IWR6843QAGABL.

[0079] Figure 6 is a circuit connection diagram of the MCU main control module of the utility model. The startup mode configuration terminal BOOT0 of the microcontroller U2 is connected to the first end of the resistor R3 and the first end of the resistor R6, the second end of the resistor R3 is connected to the power supply 3V3, and the second end of the resistor R6 is connected to the power ground.

[0080] The power monitoring enable terminal PDR_ON of the microcontroller U2 is connected to the first end of the resistor R4 and the first end of the resistor R5, the second end of the resistor R4 is connected to the power supply 3V3, and the second end of the resistor R5 is connected to the power ground.

[0081] The data transmission terminal PC7 of the microcontroller U2 is connected to the second end of the infrared emitting module, the first end of the infrared emitting module and the first end of the capacitor C20 are connected to the power supply 3V3, and the second end of the capacitor C20 is connected to the power ground; the data transmission terminal PC10 of the microcontroller U2 is connected to the third end of the infrared emitting module, and the air conditioning control module communicates with the air conditioning control board through the infrared emitting module. The fourth end of the infrared emitting module is connected to the power ground.

[0082] The external clock input terminal PC14-OSC32_IN of the microcontroller U2 is connected to the first terminal of the crystal oscillator X2 and the first terminal of the capacitor C3.

[0083] The external clock input terminal PC15-OSC32_OUT of the microcontroller U2 is connected to the first end of the crystal oscillator X2 and the first end of the capacitor C4, and the second end of the capacitor C3 and the second end of the capacitor C4 are connected to the power ground;

[0084] The clock signal input terminal PH0-OSC_IN of the microcontroller U2 is connected to the first end of the crystal oscillator X3 and the first end of the resistor R1, the second end of the resistor R1 is connected to the first end of the capacitor C5, and the second end of the capacitor C5 is connected to the power ground;

[0085] The clock signal output terminal PH1-OSC_OUT of the microcontroller U2 is connected to the second end of the crystal oscillator X3 and the first end of the resistor R2, the second end of the resistor R2 is connected to the first end of the capacitor C6, and the second end of the capacitor C6 is connected to the power ground;

[0086] Crystal oscillator X2 is an internal low-speed crystal oscillator (32.768kHz), which is connected to LSE (low-speed external clocksignal) and finally reaches RTC (real-time clock). RTC is an independent timer that can record the current system time and date for the system in real time, regardless of whether the chip is powered off. If you want to use RTC to record the system time in real time, the chip needs to be connected to an additional backup power supply, usually a button battery. In this way, the RTC can continue to run with battery power after the chip is powered off. For situations where the system time does not need to be recorded after power off, we discard the low-speed crystal oscillator to save board space and simplify circuit design.

[0087] Crystal oscillator X3 is an external high-speed crystal oscillator (8MHZ), which is connected to HSE (high-speed external clocksignal) and finally reaches SYSCLK (system clock). SYSCLK is the system clock, which provides power for the operation of various modules inside the chip and is indispensable. As the source of the system clock, the high-speed crystal oscillator can be provided by the HSI RC clock source inside the chip or an independent clock source outside the chip. When using the HSIRC clock source inside the chip as the system clock, it is found that the clock is deviated, resulting in the serial port device being unusable. Since the HSI RC clock source inside the chip is not accurate enough, we usually use an external independent clock source to provide the system clock for the chip.

[0088] Therefore, in actual use, an external high-speed crystal oscillator is indispensable to provide the system clock for the chip so that the chip can work normally.

[0089] The power supply terminals VDD_5, VDD_12, VDD_4, VDD_6, VDD_7, VDD_1, VDD_8, VDD_2, VDD_10, VDD_11, and VDD_3 of the microcontroller U2 are connected to the power supply VDD_MCU;

[0090] The power supply terminal VDDA of the microcontroller U2 is connected to the first end of the resistor R10, the first end of the capacitor C11, the positive electrode of the polarized capacitor C10, and the first end of the inductor L1. The second end of the inductor L1 is connected to the power supply VDD_MCU; the negative electrode of the polarized capacitor C10 and the second end of the capacitor C11 are connected to the power ground;

[0091] The reference voltage terminal VREF+ of the microcontroller U2 is connected to the first end of the capacitor C13, the positive electrode of the polarized capacitor C12, and the second end of the resistor R10; the negative electrode of the polarized capacitor C12 and the second end of the capacitor C13 are connected to the power ground;

[0092] The power supply terminal VDD_USB of the microcontroller U2 is connected to the first end of the capacitor C16, the positive electrode of the polar capacitor C15, and the first end of the resistor R14, and the second end of the resistor R14 is connected to the power supply VDD_MCU; the negative electrode of the polar capacitor C15 and the second end of the capacitor C16 are connected to the power ground;

[0093] The ground terminals VSS_5, VSS_4, VSS_6, VSS_7, VSS_8, VSS_9, VSS_2, VSS_10, VSS_11, and VSSA_VREF of the microcontroller U2 are connected to the power ground;

[0094] The power supply terminal VBAT of the microcontroller U2 is connected to the first end of the capacitor C14 and the first end of the resistor R12; the second end of the capacitor C14 is connected to the power ground, and the second end of the resistor R12 is connected to the power supply VDD_MCU;

[0095] The external capacitor terminal VCAP2 of the microcontroller U2 is connected to a first terminal of the capacitor C18, and a second terminal of the capacitor C18 is connected to a power ground;

[0096] The external capacitor terminal VCAP1 of the microcontroller U2 is connected to a first terminal of a capacitor C17, and a second terminal of the capacitor C17 is connected to a power ground;

[0097] The VCAP terminals of the microcontroller U2 are dedicated pins for connecting external capacitors, usually called VCAP_1 and VCAP_2. These terminals are used in conjunction with the voltage regulator (LDO - Low Dropout Regulator) inside the microcontroller to ensure a stable power supply for the digital circuits.

[0098] The model of the microcontroller U2 is preferably STM32F413H.

[0099] Figure 7This is a schematic diagram of the circuit connection of the USB power supply module of the utility model. The power input terminal Vin of the voltage regulator U3 and the first end of the capacitor C7 are connected to the 5V power supply, the power output terminal Vout of the voltage regulator U3 and the heat dissipation terminal Tab are connected to the first end of the capacitor C8 and the first end of the fuse SB1, the second end of the fuse SB1 is connected to the first end of the capacitor C9 and the first end of the resistor R7, and the second end of the fuse SB1 outputs two power supplies, namely the power supply 3V3 and the power supply VDD_MCU, which have the same voltage, the power supply VDD_MCU is used for the power supply of the MCU, and the power supply 3V3 is used for the power supply of the radar chip; the second end of the resistor R7 outputs the power supply RADAR_3V3; the second end of the capacitor C7, the second end of the capacitor C8, the second end of the capacitor C9, and the ground terminal Gnd of the voltage regulator U3 are connected to the power ground; the model of the voltage regulator U3 is preferably LD1117S33TR.

[0100] The power terminal VBUS of the USB connector CN1 is connected to the first end of the resistor R13 and the power terminal of the microcontroller U2; the resistance value of R13 is 0, the power terminal VBUS of the USB connector CN1 provides USB_5V power, and the second end of the resistor R13 is connected to the power ground; because USB has good versatility and can be applied to a variety of scenarios, it is used for power supply.

[0101] The negative end DM of the data line of the USB connector CN1 is connected to the first bidirectional data port IO_1 of the bidirectional thyristor U5.

[0102] The positive end DP of the data line of the USB connector CN1 is connected to the second bidirectional data port IO_2 of the bidirectional thyristor U5.

[0103] The identification terminal ID of the USB connector CN1 (used to distinguish between USB Type-A and Type-B connectors) is connected to the data transmission terminal of the microcontroller U2;

[0104] The ground terminal GND, the shield terminal Shield, and the expansion terminal EXP of the USB connector CN1 are connected to the power ground; the USB connector CN1 is connected to the USB interface of the debugging device, and the air volume temperature controller of the air conditioner is debugged through the debugging device.

[0105] The ground terminal GND of the power distribution switch U4 is connected to the power ground;

[0106] The power input terminal IN of the power distribution switch U4 is connected to the USB_5V power supply;

[0107] The enable terminal EN of the power distribution switch U4 is connected to the first end of the resistor R15 and the first end of the resistor R16; the second end of the resistor R16 is connected to the data transmission end of the controller U2; wherein the resistance value of the resistor R16 is 0.

[0108] The fault terminal FAULT of the power distribution switch U4 is connected to the first end of the resistor R9, the first end of the resistor R11, and the negative pole of the indicator light LD1, the second end of the resistor R9 is connected to the power supply 3V3, and the second end of the resistor R11 is connected to the data transmission end of the controller U2; the positive pole of the indicator light LD1 is connected to the first end of the resistor R8, and the second end of the resistor R8 is connected to the power supply 3V3; wherein, the resistance value of the resistor R11 is 0.

[0109] When the fault terminal FAULT of the power distribution switch U4 is at a low voltage, it means that the voltage of the circuit is too low and there may be some kind of fault; at this time, the indicator light LD1 lights up and emits red light.

[0110] The power output terminal OUT of the power distribution switch U4 is connected to the first end of the capacitor C19 to output a 5V power supply, and the second end of the capacitor C19 is connected to the power ground.

[0111] The power distribution switch U4 is used to stabilize the USB_5V power supply of the USB connector CN1 to obtain a 5V power supply.

[0112] The first bidirectional data port IO1 of the bidirectional thyristor U5 is connected to the data transmission end of the microcontroller U2.

[0113] The second bidirectional data port IO2 of the bidirectional thyristor U5 is connected to the data transmission end of the microcontroller U2.

[0114] The ground terminal GND of the bidirectional thyristor U5 is connected to the power ground.

[0115] The bidirectional thyristor U5 has bidirectional conductivity and can be triggered and conduct current in both the forward and reverse directions. It is used to protect circuits from electrostatic discharge (ESD), especially in applications such as high-speed interfaces such as USB 2.0, Ethernet links and video lines. The extremely low line capacitance of the bidirectional thyristor U5 ensures that a high level of signal integrity is maintained without compromising the protection of sensitive chips from the most stringently characterized ESD strikes.

[0116] The model of the power distribution switch U4 is preferably STMPS2141STR, and the model of the bidirectional thyristor U5 is preferably USBLC6-2P6.

[0117] The air volume and temperature controller of the air conditioner designed by the utility model is attached to the surface of the air conditioner, such as Figure 8 shown.

[0118] To sum up, the present application can improve the human comfort in the central air-conditioning environment, so that the air-conditioning can correspond to the human breathing frequency under the monitoring of the millimeter-wave radar. In the cooling state, if the breathing frequency is faster, the temperature will be lowered and the wind speed will be increased. If the breathing frequency is slower, the temperature will be maintained and the wind speed will be reduced. In the heating state, if the breathing frequency is faster, the temperature will be lowered and the wind speed will be reduced. If the breathing frequency is slower, the temperature will be maintained and the wind speed will be reduced.

[0119] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. An air conditioning air volume temperature controller based on millimeter wave radar, characterized in that: include: A radar module, an MCU module, an air conditioning control module and a power supply module, wherein the data output end of the radar module is connected to the data input end of the MCU module, and the data output end of the MCU module is connected to the data input end of the air conditioning control module; The power supply module is respectively connected to the radar module and the MCU module to provide power for the radar module and the MCU module.

2. The air conditioning air volume and temperature controller based on millimeter wave radar according to claim 1, characterized in that: The radar module transmits the converted data to the main control unit MCU through SPI, where SPI includes four signal lines: CLK, MISO, MOSI and CS.

3. The air conditioning air volume and temperature controller based on millimeter wave radar according to claim 1, characterized in that: The radar module includes: The crystal oscillator terminal CLKP of the radar chip U1A and the first end of the crystal oscillator X1 are connected to the first end of the capacitor C1; the second end of the capacitor C1 is connected to the power ground; The external clock terminal CLKM of the radar chip U1A and the second end of the crystal oscillator X1 are connected to the first end of the capacitor C2; the second end of the capacitor C2 is connected to the power ground; The radar signal output terminal VOUT_PA of the radar chip U1A sends out a radar signal; The internal low-dropout linear regulator output terminal VOUT_14APLL of the radar chip U1A is connected to the power supply RADAR_3V3. The output terminal VOUT_14SYNTH of the internal low-dropout linear regulator of the radar chip U1A is connected to the power supply RADAR_3V3. The bandgap reference output terminal VBGAP of the radar chip U1A is connected to the power supply RADAR_3V3.

4. The air conditioning air volume and temperature controller based on millimeter wave radar according to claim 1, characterized in that: The MCU module includes: The startup mode configuration terminal BOOT0 of the microcontroller U2 is connected to the first end of the resistor R3 and the first end of the resistor R6, the second end of the resistor R3 is connected to the power supply 3V3, and the second end of the resistor R6 is connected to the power ground. The power monitoring enable terminal PDR_ON of the microcontroller U2 is connected to the first end of the resistor R4 and the first end of the resistor R5, the second end of the resistor R4 is connected to the power supply 3V3, and the second end of the resistor R5 is connected to the power ground. The data transmission terminal PC7 of the microcontroller U2 is connected to the second terminal of the infrared emitting module, the first terminal of the infrared emitting module and the first terminal of the capacitor C20 are connected to the power supply 3V3, and the second terminal of the capacitor C20 is connected to the power ground; the data transmission terminal PC10 of the microcontroller U2 is connected to the third terminal of the infrared emitting module, and the fourth terminal of the infrared emitting module is connected to the power ground; The external clock input terminal PC14-OSC32_IN of the microcontroller U2 is connected to the first terminal of the crystal oscillator X2 and the first terminal of the capacitor C3. The external clock input terminal PC15-OSC32_OUT of the microcontroller U2 is connected to the first end of the crystal oscillator X2 and the first end of the capacitor C4, and the second end of the capacitor C3 and the second end of the capacitor C4 are connected to the power ground; The clock signal input terminal PH0-OSC_IN of the microcontroller U2 is connected to the first end of the crystal oscillator X3 and the first end of the resistor R1, the second end of the resistor R1 is connected to the first end of the capacitor C5, and the second end of the capacitor C5 is connected to the power ground; The clock signal output terminal PH1-OSC_OUT of the microcontroller U2 is connected to the second end of the crystal oscillator X3 and the first end of the resistor R2, the second end of the resistor R2 is connected to the first end of the capacitor C6, and the second end of the capacitor C6 is connected to the power ground; The power supply terminals VDD_5, VDD_12, VDD_4, VDD_6, VDD_7, VDD_1, VDD_8, VDD_2, VDD_10, VDD_11, and VDD_3 of the microcontroller U2 are connected to the power supply VDD_MCU; The power supply terminal VDDA of the microcontroller U2 is connected to the first end of the resistor R10, the first end of the capacitor C11, the positive electrode of the polarized capacitor C10, and the first end of the inductor L1. The second end of the inductor L1 is connected to the power supply VDD_MCU; the negative electrode of the polarized capacitor C10 and the second end of the capacitor C11 are connected to the power ground; The reference voltage terminal VREF+ of the microcontroller U2 is connected to the first end of the capacitor C13, the positive electrode of the polarized capacitor C12, and the second end of the resistor R10; the negative electrode of the polarized capacitor C12 and the second end of the capacitor C13 are connected to the power ground; The power supply terminal VDD_USB of the microcontroller U2 is connected to the first end of the capacitor C16, the positive electrode of the polar capacitor C15, and the first end of the resistor R14, and the second end of the resistor R14 is connected to the power supply VDD_MCU; the negative electrode of the polar capacitor C15 and the second end of the capacitor C16 are connected to the power ground; The ground terminals VSS_5, VSS_4, VSS_6, VSS_7, VSS_8, VSS_9, VSS_2, VSS_10, VSS_11, and VSSA_VREF of the microcontroller U2 are connected to the power ground; The power supply terminal VBAT of the microcontroller U2 is connected to the first end of the capacitor C14 and the first end of the resistor R12; the second end of the capacitor C14 is connected to the power ground, and the second end of the resistor R12 is connected to the power supply VDD_MCU; The external capacitor terminal VCAP2 of the microcontroller U2 is connected to a first terminal of the capacitor C18, and a second terminal of the capacitor C18 is connected to a power ground; The external capacitor terminal VCAP1 of the microcontroller U2 is connected to a first terminal of the capacitor C17, and a second terminal of the capacitor C17 is connected to a power ground.

5. The air-conditioning air volume and temperature controller based on millimeter-wave radar according to claim 1, characterized in that: The power supply module includes: The power input terminal Vin of the voltage regulator U3 and the first end of the capacitor C7 are connected to the 5V power supply, the power output terminal Vout of the voltage regulator U3 and the heat dissipation terminal Tab are connected to the first end of the capacitor C8 and the first end of the fuse SB1, the second end of the fuse SB1 is connected to the first end of the capacitor C9 and the first end of the resistor R7, the second end of the fuse SB1 outputs two power supplies, namely the power supply 3V3 and the power supply VDD_MCU, and the second end of the resistor R7 outputs the power supply RADAR_3V3; the second end of the capacitor C7, the second end of the capacitor C8, the second end of the capacitor C9, and the ground terminal Gnd of the voltage regulator U3 are connected to the power ground.

6. The air conditioning air volume and temperature controller based on millimeter wave radar according to claim 1, characterized in that: The power supply module also includes: The ground terminal GND of the power distribution switch U4 is connected to the power ground; The power input terminal IN of the power distribution switch U4 is connected to the USB_5V power supply; The enable terminal EN of the power distribution switch U4 is connected to the first end of the resistor R15 and the first end of the resistor R16; the second end of the resistor R16 is connected to the data transmission end of the controller U2; The fault terminal FAULT of the power distribution switch U4 is connected to the first end of the resistor R9, the first end of the resistor R11, and the negative electrode of the indicator light LD1, the second end of the resistor R9 is connected to the power supply 3V3, and the second end of the resistor R11 is connected to the data transmission end of the controller U2; the positive electrode of the indicator light LD1 is connected to the first end of the resistor R8, and the second end of the resistor R8 is connected to the power supply 3V3; The power output terminal OUT of the power distribution switch U4 is connected to the first end of the capacitor C19 to output a 5V power supply, and the second end of the capacitor C19 is connected to the power ground.

7. The air-conditioning air volume and temperature controller based on millimeter-wave radar according to claim 1, characterized in that: The power supply module also includes: The power supply terminal VBUS of the USB connector CN1 is connected to the first end of the resistor R13 and the power supply terminal of the microcontroller U2; the second end of the resistor R13 is connected to the power ground; The negative end DM of the data line of the USB connector CN1 is connected to the first bidirectional data port IO_1 of the bidirectional thyristor U5. The positive end DP of the data line of the USB connector CN1 is connected to the second bidirectional data port IO_2 of the bidirectional thyristor U5. The identification terminal ID of the USB connector CN1 is connected to the data transmission terminal of the microcontroller U2; The ground terminal GND, the shield terminal Shield, and the extension terminal EXP of the USB connector CN1 are connected to the power ground.

8. The air-conditioning air volume and temperature controller based on millimeter-wave radar according to claim 1, characterized in that: The model of radar chip U1A is IWR6843QAGABL.

9. The air conditioning air volume and temperature controller based on millimeter wave radar according to claim 1, characterized in that: The model of the microcontroller U2 is STM32F413H, the model of the voltage regulator U3 is LD1117S33TR, the model of the power distribution switch U4 is STMPS2141STR, and the model of the bidirectional thyristor U5 is USBLC6-2P6.

10. An air conditioning air volume and temperature control system based on millimeter wave radar, characterized in that: An air-conditioning air volume and temperature controller based on millimeter-wave radar as described in any one of claims 1 to 9 is arranged on the air-conditioning.

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