Intelligent temperature control system for automobile seat

Abstract

The utility model belongs to the technical field of automobile seat temperature control, and particularly relates to an automobile seat intelligent temperature control system which comprises a single chip microcomputer system, a control input module, a temperature acquisition module, an abnormity alarm module, a Bluetooth module, a 4G module, a data interface, a current monitoring module, a control circuit module, a refrigerating system, a heating system and a power management system. The control input module, the temperature acquisition module and the current monitoring module are connected with the input of the single-chip microcomputer system; the abnormity alarm module, the data interface and the control circuit module are connected with the output of the single-chip microcomputer system. The Bluetooth module and the 4G module are connected with the input and the output of the single-chip microcomputer system; the current monitoring module is connected with the control circuit module to monitor current; the control circuit module is connected with inputs of the heating system and the refrigerating system. The problem that the temperature of an automobile seat is not constant in different seasons can be solved, different riding requirements of a user in a hot or cold environment are met, and the automobile seat has good market application prospects.

Description

Technical Field

[0001] The utility model belongs to the technical field of automobile seat temperature control, and in particular relates to an automobile seat intelligent temperature control system. Background Art

[0002] With the rapid development of the automobile industry, cars have long become an indispensable means of transportation in this era, and private cars have gradually entered thousands of households. Therefore, people's requirements for the comfort of the in-car environment are getting higher and higher. In the cold winter or when the car is parked outdoors overnight, the temperature inside the car will be relatively low, especially for leather seats, the temperature may even drop to around zero degrees Celsius. Sitting on such a cold seat, passengers will inevitably feel very uncomfortable. Even if the air conditioner is turned on immediately, it will take at least ten minutes for the seat to reach normal body temperature. At this time, the most urgent need of the car owner is to have a device that can quickly increase the temperature of the seat in the car.

[0003] In extremely hot summer, if a car is parked outdoors for a long time, the temperature inside the car will be unimaginably high, like a steam room, and the seats will be unbearably hot. Even if the car is not exposed to the scorching sun, if the passengers drive for a long time without getting off to rest, even if the air conditioner is turned on, the buttocks and backrests will still feel hot and humid, and even the clothes and pants will be soaked with sweat. At this time, the most urgent need of the car owner is to have a device that can quickly reduce the temperature of the car seat. In the long run, it will cause great harm to the body and even cause many diseases, such as eczema, prostatitis, hemorrhoids, etc.

[0004] In the cold winter, the temperature of car seats parked outdoors is low, and the cold seats make passengers feel extremely uncomfortable; in the hot summer, the cockpit is very hot under the scorching sun, and the seats can also burn the human body. In addition, sitting in the car for a long time will make the buttocks feel very hot. Even if the air conditioner is turned on, the cold air cannot circulate to the contact part between the human body and the seat, and the heat below cannot be dissipated, resulting in overheating and sweating, which affects the passenger's riding experience. Therefore, the development of an intelligent temperature control system for car seats is one of the hot spots for future car seats.

[0005] The information disclosed in this background technology section is only intended to increase the understanding of the overall background of the present invention, and should not be regarded as acknowledging or suggesting in any form that the information constitutes the prior art already known to a person skilled in the art. Utility Model Content

[0006] The utility model aims to provide an intelligent temperature control system for automobile seats, so as to solve the problem that the temperature of automobile seats is not constant in different seasons and meet the different riding needs of users in hot or cold environments.

[0007] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0008] An intelligent temperature control system for automobile seats, comprising:

[0009] The single-chip microcomputer system has an input end connected to the control input module, the temperature acquisition module and the current monitoring module, and an output end connected to the abnormal alarm module, the data interface and the control circuit module;

[0010] A power management system, comprising a DC switching power supply and two low voltage difference linear voltage regulators; the DC switching power supply outputs a DC 5V, and the two low voltage difference linear voltage regulators output 3.3V and 5V respectively;

[0011] The control input module includes an EC11 rotary encoder and a circular switch; the clock signal EC_CLK, the rotation direction signal EC_DT and the switch signal EC_SW output by the EC11 rotary encoder are respectively connected to three IO ports of the single-chip system; the switch signal SW of the circular switch is connected to one IO port of the single-chip system;

[0012] The temperature acquisition module is composed of a DHT11 module and a 3-port base; the three ports are DHTOUT, VCC and GND; wherein the port DHTOUT is connected to the IO port of the single-chip system, the port VCC is connected to the 3.3V output end of the power management system, and the port GND is connected to the ground wire;

[0013] The abnormal alarm module is composed of a buzzer and an S9013 transistor; the base of the S9013 transistor is connected to a 1K resistor, and the other end of the 1k resistor is connected to the IO port of the single-chip computer system; the power supply end of the abnormal alarm module is connected to the 3.3V output end of the power management system;

[0014] A data interface, receiving system information output by the single-chip microcomputer system through a serial output port, and connecting to a central control system of a vehicle;

[0015] A current monitoring module, connected to the control circuit module, for monitoring current;

[0016] A control circuit module connected to the input terminals of the heating system and the cooling system;

[0017] A refrigeration system, comprising a high-quality carbon fiber pad, a human body pressure sensor, an air inlet duct, a semiconductor module, a centrifugal fan and an air outlet; the air inlet duct is located on the right side above the car seat; the semiconductor module is embedded in the car seat; the centrifugal fan is connected to the semiconductor module and the control circuit module; the air outlet is located below the car seat;

[0018] The heating system comprises a high-quality carbon fiber pad, a human body pressure sensor, a wiring harness and a protective tube sleeve; the high-quality carbon fiber pad is embedded in the car seat and connected to the control circuit module through the wiring harness; the wiring harness is covered with a protective tube sleeve.

[0019] Preferably, it also includes a Bluetooth module and a 4G module, wherein the Bluetooth module and the 4G module are connected to the input and output ends of the single-chip microcomputer system; the Bluetooth module is wirelessly connected to the mobile terminal for data interaction; the 4G module is connected to the database via the Internet, and then interacts with the mobile terminal for data.

[0020] Preferably, the power management chip of the DC switching power supply uses LM2596 and its peripheral circuits, outputs a DC 5V power supply, has a maximum current of 3A, and an input voltage of 12V; two low-voltage difference linear voltage regulators use AMS1117-3.3V and AMS1117-5V respectively; the DC switching power supply outputs a DC 5V power supply connected to AMS1117-3.3V and its peripheral circuits to form a 3.3V output, and AMS1117-5V and its peripheral circuits to form a 5V output.

[0021] The power line design of the power management system adopts a four-layer structure design for the hardware circuit board, two of which are the power layer and the ground layer, which serve as electrical-ground isolation layers. The principle of shortest path noise discharge is used to place a ground via matrix in signal-dense areas. The peripheral lines of the power chip use inductors with shielding covers, and the power wiring adopts a filled wiring method, using power lines to isolate high-frequency and low-voltage lines.

[0022] Preferably, the current monitoring module includes a ZMCT118F current transformer, an MB10F rectifier bridge, resistors R1\R2\R3\RL1\Rf1, non-polar capacitors C1\C102, polar capacitors E1\C101, precision adjustable resistors RP1, LM358 dual operational amplifiers and indicator LEDs; wherein the ZMCT118F current transformer input is contactless mutual inductance, which is mutual inductance with the output line of the control circuit module, and the ZMCT118F current transformer output is connected to the MB10F rectifier bridge input; the MB10F rectifier bridge output is connected in parallel with resistor R1, in series with resistor R2, and connected in parallel with polar capacitor E1 and non-polar capacitor C1 through resistor R2, and outputs ZL_OUT Connect the positive input terminal of the LM358 front stage, the negative input terminal of the LM358 front stage is connected to the adjustment terminal of the precision adjustable resistor RP1, and the precision adjustable resistor RP1 and the resistor R3 are connected to the power ground GND; the adjustment terminal of the precision adjustable resistor RP1 is connected to the LM358 front stage output OUT through the resistor Rf1; the LM358 front stage output OUT is connected to the positive input terminal of the LM358 rear stage, and the negative input terminal of the LM358 rear stage is connected to its output terminal; the LM358 front stage power supply terminal is connected to the 5V output terminal of the power management system, and the power management system 5V is connected in parallel with the polar capacitor C101 and the non-polar capacitor C102 for filtering; the indicator LED is connected in series with the resistor RL1, and the power management system is powered by 5V to form a power-on indicator light.

[0023] Preferably, the control circuit module includes a heating control circuit and a cooling control circuit; the two control circuits are the same, including an optocoupler IC817, a 1N4148 diode D2, a MOS tube Q1, resistors R1\R2\R3, an output port and a control signal Ctr; wherein the control signal Ctr is connected to port 1 of the optocoupler IC817 through resistor R1, port 2 of the optocoupler IC817 is connected to the power supply GND, port 4 of the optocoupler IC817 is connected to the power supply 12V, and port 3 of the optocoupler IC817 is connected to the G end of the MOS tube Q1 through resistor R2; the G end of the MOS tube Q1 is connected to the S end through resistor R3, and the S end of the MOS tube Q1 is connected to the power supply GND; the D end of the MOS tube Q1 is connected to port 2 of the output port; port 1 of the output port is connected to the power supply 12V; ports 1 and 2 of the output port are connected in parallel with the 1N4148 diode D2.

[0024] Compared with the prior art, the utility model has the following beneficial effects: the intelligent temperature control system for automobile seats of the utility model provides a multifunctional intelligent temperature control system, solves the problem of unstable temperature of automobile seats in different seasons, and can prevent various physical diseases caused by temperature differences; provides manual adjustment mode and automatic adjustment mode, solves the inconvenience of the single manual adjustment mode of the automobile seat temperature control system; provides Bluetooth remote and 4G remote control solutions, which can realize the early initiation of temperature control instructions at a distance; provides human body pressure sensing to avoid energy waste caused by mistakenly turning on the switch when no one is riding; provides a circuit current self-test module to ensure the safety of the system; the overall system volume is smaller, and it has the ability to prevent electromagnetic interference and moisture. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is the overall design drawing of the utility model;

[0026] Figure 2 It is a circuit design diagram of the control input module of the utility model;

[0027] Figure 3 It is a circuit design diagram of the temperature acquisition module of the utility model;

[0028] Figure 4 It is a circuit design diagram of the abnormal alarm module of the utility model;

[0029] Figure 5 It is a circuit design diagram of the current monitoring module of the utility model;

[0030] Figure 6 It is a circuit design diagram of the control circuit module of the utility model;

[0031] Figure 7 It is a schematic diagram of the automobile seat heating and cooling system of the utility model;

[0032] Figure 8 It is the design diagram of the power management system of the utility model;

[0033] Description of main reference numerals:

[0034] 1. Single chip microcomputer system; 2. Control input module; 3. Temperature acquisition module; 4. Abnormal alarm module; 5. Bluetooth module; 6. 4G module; 7. Data interface; 8. Current monitoring module; 9. Control circuit module; 10. Heating system; 11. Refrigeration system; 12. Power management system; 13. EC11 knob encoder; 14. Round switch; 15. 3-port base; 16. Buzzer; 17. S9013 transistor; 18. ZMC T118F current transformer; 19. MB10F rectifier bridge; 20. LM358 front stage; 21. LM358 rear stage; 22. Optocoupler; 23. Output port; 24. High-quality carbon fiber pad; 25. Air inlet duct; 26. Semiconductor module; 27. Heating fiber; 28. Human body pressure sensor; 29. ​​Centrifugal fan; 30. Air outlet; 31. Wiring harness; 32. DC switching power management module; 33-34. Low voltage difference linear voltage regulator. DETAILED DESCRIPTION

[0035] The following is a clear and complete description of the technical solution of the utility model patent. Obviously, the described embodiments are part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, all other embodiments obtained by technicians in this field without creative work are within the scope of protection of the utility model.

[0036] In the description of the present invention, it should be noted that the orientations or positional relationships indicated by terms such as "center", "up", "down", "left", "right", "vertical", "horizontal", "inside" and "outside" are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the utility model.

[0037] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be a connection between two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0038] See attached Figure 1The embodiment of the utility model provides an intelligent temperature control system for automobile seats, including a single-chip computer system 1, a control input module 2, a temperature acquisition module 3, an abnormal alarm module 4, a Bluetooth module 5, a 4G module 6, a data interface 7, a current monitoring module 8, a control circuit module 9, a heating system 10, a cooling system 11, and a power management system 12. The control input module 2, the temperature acquisition module 3, and the current monitoring module 8 are connected to the input of the single-chip computer system 1; the abnormal alarm module 4, the data interface 7, and the control circuit module 9 are connected to the output of the single-chip computer system 1; the Bluetooth module 5 and the 4G module 6 are connected to the input and output of the single-chip computer system 1; the current monitoring module 8 is connected to the output line of the control circuit module 9 for monitoring the current; the control circuit module 9 is connected to the input of the heating system 10 and the cooling system 11; the Bluetooth module 5 is wirelessly connected to the mobile terminal for data interaction; the 4G module 6 is connected to the database through the Internet, and then interacts with the mobile terminal for data. The data interface 7 uses a USB interface to output system information to the data interface through the serial output of the single-chip computer system 1, and the data interface 7 is connected to the automobile central control system.

[0039] See attached Figure 2 The control input module 2 provided by the embodiment of the utility model includes an EC11 knob encoder 13, a circular switch 14, resistors RS1\RSW1\RSW2\RSW3, and non-polar capacitors CS1\CSW1\CSW2\CSW3. The EC11 knob encoder 13 encodes and outputs a clock signal EC_CLK, a rotation direction signal EC_DT, and a switch signal EC_SW. The circular switch outputs a switch signal SW. The A port of the EC11 knob encoder 13 is connected in series with the non-polar capacitor CSW2 to the power supply GND, and is connected in series with the resistor RSW2 to the power supply 3.3V. The EC11 knob The B port of the encoder 13 is connected in series with the non-polar capacitor CSW1 to the power supply GND, and connected in series with the resistor RSW1 to the power supply 3.3V; the C port of the EC11 knob encoder 13 is connected to the power supply GND; the 2 port of the EC11 knob encoder 13 is connected in series with the resistor RSW3 to the power supply 3.3V; the 1 port of the EC11 knob encoder 13 is connected to the power supply GND; the 1 and 2 ports of the EC11 knob encoder 13 are connected in parallel with the non-polar capacitor CSW3; the two ends of the circular switch 14 are connected in parallel with the non-polar capacitor CS1, one end of the circular switch 14 is connected in series with the resistor RS1 to the power supply 3.3V, and the other end is connected to the power supply GND. The output EC_CLK\EC_DT\EC_SW\SW is connected to the IO port of the microcontroller system.

[0040] See attached Figure 3The temperature acquisition module 3 provided by the embodiment of the utility model is composed of a DHT11 module and a 3-port base 15, and the three ports are the DHT11 signal output terminal DHTOUT, VCC and GND. The signal DHTOUT of port 1 is connected to the IO port of the single-chip system 1, port 2 is connected to the 3.3V output terminal of the power management system 12, and port 3 is connected to the power supply GND.

[0041] See attached Figure 4 The abnormal alarm module 4 provided in the embodiment of the utility model is composed of a buzzer 16, an S9013 transistor 17 and a resistor R300; the base of the S9013 transistor 17 is connected to the resistor R300, and the other end of the resistor R300 is connected to the IO port of the microcontroller system 1, and the power supply end of the abnormal alarm module 4 is connected to the 3.3V output end of the power management system 12.

[0042] See attached Figure 5 The current monitoring module 8 provided by the embodiment of the utility model includes a ZMCT118F current transformer 18, an MB10F rectifier bridge 19, resistors R1\R2\R3\RL1\Rf1, non-polar capacitors C1\C102, polar capacitors E1\C101, precision adjustable resistors RP1, LM358 dual operational amplifiers and indicator LEDs; the input of the ZMCT118F current transformer 18 is a contactless mutual inductance, which is outputted by the control circuit module 9 as a line mutual inductance, and the output of the ZMCT118F current transformer 18 is connected to the input of the MB10F rectifier bridge 19; the output of the MB10F rectifier bridge 19 is connected in parallel with a resistor R1 and in series with a resistor R2, and is connected in parallel with a polar capacitor E1 and a non-polar capacitor C1 through the resistor R2, and the output ZL_OUT is connected to the positive phase input of the LM358 front stage 20 The inverting input of the LM358 front stage 20 is connected to the adjusting end of the precision adjustable resistor RP1, and the precision adjustable resistor RP1 and the resistor R3 are connected to the power ground GND; the adjusting end of the precision adjustable resistor RP1 is connected to the output OUT of the LM358 front stage 20 through the resistor Rf1; the output OUT of the LM358 front stage 20 is connected to the positive input of the LM358 rear stage 21, and the inverting input of the LM358 rear stage 21 is connected to its output end, and the output of the LM358 rear stage 21 is connected to the ADC port of the single-chip computer system 1; the power supply end of the LM358 front stage 20 is connected to the 5V output end of the power management system, and the 5V output end of the power management system is connected in parallel with the polar capacitor C101 and the non-polar capacitor C102 for filtering; the indicator LED is connected in series with the resistor RL1, and the power management system is powered by 5V to form a power-on indicator light.

[0043] See attached Figure 6The control circuit module 9 provided in the embodiment of the utility model includes a heating control circuit and a cooling control circuit; the two control circuits are the same, including an optocoupler 22, a 1N4148 diode D2, a MOS tube (60V / 10A) Q1, resistors R1\R2\R3, an output port 23 and a control signal Ctr, forming two control circuits. The control signal Ctr is connected to port 1 of the optocoupler 22 through R1, port 2 of the optocoupler 22 is connected to the power supply GND, port 4 of the optocoupler 22 is connected to the power supply 12V, and port 3 of the optocoupler 22 is connected to the G end of the MOS tube Q1 through the resistor R2; the G end of the MOS tube Q1 is connected to the S end through the resistor R3, and the S end of the MOS tube Q1 is connected to the power supply GND; the D end of the MOS tube Q1 is connected to port 2 of the output port 23; port 1 of the output port 23 is connected to the power supply 12V; port 1 and port 2 of the output port 23 are connected in parallel with the 1N4148 diode D2. The control signals of the two control circuits are Ctr_hot and Ctr_cold respectively.

[0044] See attached Figure 7 The cooling system provided by the embodiment of the utility model includes a high-quality carbon fiber pad 24, an air inlet duct 25, a semiconductor module 26, a human body pressure sensor 28, a centrifugal fan 29 and an air outlet 30; the air inlet duct 25 is located on both sides above the car seat, the air inlet duct 25 is connected to the semiconductor module 26, the semiconductor module 26 is attached to the high-quality carbon fiber pad 24 for heat dissipation, and is embedded in the car seat, the centrifugal fan 28 is connected to the bottom of the semiconductor module 26 for exhaust, the centrifugal fan 28 is connected to the air outlet 29 in the air outlet direction, the air outlet 29 is located below the car seat, the centrifugal fan 28 is connected to the control circuit module 9, and the human body pressure sensor 27 is connected to the single-chip computer system 1. The heating system includes a high-quality carbon fiber pad 24, a heating fiber 27, a human body pressure sensor 28 and a wiring harness 31; the high-quality carbon fiber pad 24 is attached with a heating fiber 27, and is connected to the heating control of the control circuit module 9 through the wiring harness 31, the wiring harness 31 is covered with a protective tube sleeve, and the human body pressure sensor 27 is connected to the single-chip computer system 1.

[0045] See attached Figure 8The power management system provided by the embodiment of the utility model includes a DC switching power management module 32, a low voltage difference linear voltage regulator 33 and 34, resistors R111\R112, an adjustable resistor RP1, non-polar capacitors C114\C115\C23\C101\C103\C221\C223, polar capacitors C21\C22\C102\C222, an inductor L21 and a Schottky diode DZ1. The DC switch power management module 32 selects the model LM2596-ADJ, its port 1 inputs 12V DC, connected in parallel with the polar capacitor C21, and its ports 3 and 5 are connected to the power supply GND; the DC switch power management module 32 port 2 is connected in series with L21 to output DC5V, and in parallel with DZ1; the DC switch power management module 32 port 4 is connected in parallel with the resistor R112, and the port 4 is connected to the adjustable resistor circuit composed of the non-polar capacitor C23 in parallel with the adjustable resistor RP1 and the resistor R111 in series to output DC5V, and the output DC5V is connected in parallel with the polar capacitor C22. The low voltage difference linear voltage regulator 33 selects the model AMS1117-3V3, its port 3 inputs DC5V, connected in parallel with the non-polar capacitor C101 and the polar capacitor C102, port 1 is connected to the power supply GND, and port 2 outputs 3.3V voltage, and outputs 3.3V in parallel with the non-polar capacitor C103. The low voltage difference linear voltage regulator 34 is selected as model AMS1117-5V, its port 3 inputs 12V, and is connected in parallel with a non-polar capacitor C221 and a polar capacitor C222, port 1 is connected to the power supply GND, and port 2 outputs 5V voltage, and the output 5V is connected in parallel with a non-polar capacitor C223.

[0046] The intelligent temperature control system for car seats of this utility model can solve the problem of unstable temperature of car seats in different seasons, and provide manual adjustment mode and automatic adjustment mode at the same time, solving the inconvenience of the single manual adjustment mode of the car seat temperature control system. The intelligent temperature control system for car seats of this utility model also provides a circuit current self-test module to ensure the safety of the system, and has the ability to prevent electromagnetic interference and moisture. At the same time, the design of the hardware circuit is small and light, and the external interface is flexibly customized, which is suitable for most car models.

[0047] In addition, this embodiment also tests the electrical performance of the heating system, the cooling system and the human body pressure sensor, and adds a short circuit test.

[0048] The heating system uses a carbon fiber seat cushion, and the test results are as follows:

[0049] Rated voltage: 10~16V;

[0050] Rated current: 1.5~2.5A;

[0051] Rated power: 15~30W;

[0052] Temperature control range: 30℃~60℃.

[0053] The cooling system uses a carbon fiber seat cushion, and the test results are as follows:

[0054] Rated voltage: 5~24V;

[0055] Rated current: 1~2.3A;

[0056] Rated power: 12W;

[0057] Noise decibel: 20~35dB;

[0058] Temperature control range: 25℃~35℃.

[0059] Human body pressure sensor test results: weight adjustment 30 ~ 50Kg, circuit connected.

[0060] Perform a short circuit test to short-circuit the heating system and cooling system. The peak current of 3A will activate the power-off protection.

[0061] After testing, the overall electrical performance of the car seat intelligent temperature control system is:

[0062] Rated input voltage: 12V;

[0063] Maximum current: 2.8A;

[0064] Maximum power: 33W.

[0065] When the automatic adjustment mode of the intelligent temperature control system is activated, the heating system will automatically detect the ambient temperature in the car. When the temperature is lower than 13°C, the system will automatically start to heat the seats continuously; the lower the temperature of the detection space, the higher the accumulated power of continuous operation. When the seat surface reaches the saturation temperature (38°C), the system will automatically switch to intermittent heating to keep the seat surface at around 35°C; when the cab temperature is higher than 22°C±2°C, the system will automatically shut down.

[0066] The cooling system will automatically detect the ambient temperature in the car. When the temperature is higher than 35℃, the system will automatically start to continuously dissipate heat for the seats. The higher the temperature of the detection space, the higher the accumulated power of continuous operation. When the seat surface reaches the saturation temperature (28℃), the system will automatically switch to intermittent cooling to keep the seat surface at around 28℃. When the cabin temperature is lower than 30℃±2℃, the system will automatically shut down.

[0067] The intelligent temperature control system for car seats of this utility model can be remotely controlled using Bluetooth mode and 4G networking mode. Using Bluetooth mode, the temperature inside the car and the seat can be checked within a distance of 5m, and control instructions can be sent without delay; using 4G networking mode, the temperature inside the car and the seat can be checked anywhere with Internet, and control instructions can be sent with a delay of about 3s.

[0068] The foregoing description of specific exemplary embodiments of the utility model is for the purpose of illustration and illustration. These descriptions are not intended to limit the utility model to the precise form disclosed, and it is clear that many changes and variations can be made based on the above teachings. The purpose of selecting and describing the exemplary embodiments is to explain the specific principles of the utility model and its practical application, so that those skilled in the art can realize and utilize various different exemplary embodiments of the utility model and various different options and changes. The scope of the utility model is intended to be defined by the claims and their equivalents.

Claims

1. An intelligent temperature control system for automobile seats, characterized in that: include: The single-chip microcomputer system has an input end connected to the control input module, the temperature acquisition module and the current monitoring module, and an output end connected to the abnormal alarm module, the data interface and the control circuit module; The power management system includes a DC switching power supply and two low-voltage dropout linear regulators; the two low-voltage dropout linear regulators output 3.3V and 5V respectively; A control input module includes a knob encoder and a circular switch; the clock signal, the rotation direction signal and the switch signal output by the knob encoder are respectively connected to three IO ports of the single-chip system; one switch signal of the circular switch is connected to one IO port of the single-chip system; The temperature acquisition module is composed of a DHT11 module and a 3-port base; the three ports of the 3-port base are respectively connected to the IO port of the single-chip system, the 3.3V output end of the power management system and the ground line; The abnormal alarm module is composed of a buzzer and a transistor; the base of the transistor is connected to the IO port of the single-chip computer system; the power supply end of the abnormal alarm module is connected to the 3.3V output end of the power management system; A data interface, receiving system information output by the single-chip microcomputer system through a serial output port, and connecting to a central control system of a vehicle; A current monitoring module, connected to the control circuit module, for monitoring current; A control circuit module connected to the input terminals of the heating system and the cooling system; A refrigeration system, comprising a high-quality carbon fiber pad, a human body pressure sensor, an air inlet duct, a semiconductor module, a centrifugal fan and an air outlet; the air inlet duct is located on the right side above the car seat; the semiconductor module is embedded in the car seat; the centrifugal fan is connected to the semiconductor module and the control circuit module; the air outlet is located below the car seat; The heating system comprises a high-quality carbon fiber pad, a human body pressure sensor, a wiring harness and a protective tube sleeve; the high-quality carbon fiber pad is embedded in the car seat and connected to the control circuit module through the wiring harness; the wiring harness is covered with a protective tube sleeve.

2. The intelligent temperature control system for automobile seats according to claim 1, characterized in that: It also includes a Bluetooth module and a 4G module, which are connected to the input and output ends of the single-chip microcomputer system; the Bluetooth module is wirelessly connected to the mobile terminal for data interaction; the 4G module is connected to the database through the Internet, and then interacts with the mobile terminal for data.

3. The intelligent temperature control system for automobile seats according to claim 1, characterized in that: The power management chip of the DC switching power supply uses LM2596 and its peripheral circuits, outputs a DC 5V power supply, has a maximum current of 3A, and an input voltage of 12V; two low-voltage difference linear voltage regulators use AMS1117-3.3V and AMS1117-5V respectively; the DC switching power supply outputs a DC 5V power supply connected to AMS1117-3.3V to output 3.3V, and AMS1117-5V to output 5V.

4. The intelligent temperature control system for automobile seats according to claim 1, characterized in that: The current monitoring module includes a current transformer, a rectifier bridge, multiple resistors, multiple capacitors, a precision adjustable resistor, an LM358 dual operational amplifier and an indicator LED; wherein the current transformer input is a contactless mutual inductance, which is mutual inductance with the output line of the control circuit module, and the current transformer output is connected to the rectifier bridge input; the rectifier bridge output is connected to the LM358 front-stage positive input terminal, the LM358 front-stage negative input terminal is connected to the adjustment terminal of the precision adjustable resistor, and one end of the precision adjustable resistor is grounded; the precision adjustable resistor adjustment terminal is connected to the LM358 front-stage output; the LM358 front-stage output is connected to the LM358 rear-stage positive input, and the LM358 rear-stage negative input is connected to its output terminal; the LM358 front-stage power supply terminal is connected to the 5V output terminal of the power management system, and the 5V output terminal of the power management system is filtered in parallel with multiple capacitors; the indicator LED is powered by the 5V output terminal of the power management system.

5. The intelligent temperature control system for automobile seats according to claim 1, characterized in that: The control circuit module includes a heating control circuit and a cooling control circuit; the two control circuits are the same, including an optocoupler, a diode, a MOS tube, multiple resistors, an output port and a control signal; wherein the control signal is connected to optocoupler port 1, optocoupler port 2 is grounded, optocoupler port 4 is connected to a power supply of 12V, and optocoupler port 3 is connected to the G end of the MOS tube; the G end of the MOS tube is connected to the S end, and the S end of the MOS tube is grounded; the D end of the MOS tube is connected to port 2 of the output port; port 1 of the output port is connected to a power supply of 12V; and diodes are connected in parallel to ports 1 and 2 of the output port.

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