Temperature detection system and vehicle
The temperature drift characteristics of the microphone module and transistor are detected, which solves the problem that the in-car temperature sensor cannot accurately reflect the seat temperature, realizes the accurate detection of seat temperature and adaptive ventilation/heating function, reducing vehicle costs .
Patent Information
- Application Number
- CN202411375612.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-29
- Publication Date
- 2025-01-03
AI Technical Summary
In the existing car seat ventilation/heating functions, the in-car temperature sensor cannot accurately reflect the seat temperature, resulting in a high probability of false triggering and increasing vehicle cost.
The microphone module, resistor, voltage sampling module and temperature detection module are used to detect the seat temperature through the voltage at both ends of the microphone module, and combine the temperature drift characteristics of the transistor to realize temperature detection, and the air conditioning function is adaptively turned on through the control module.
No additional temperature sensors are required to reduce hardware costs, achieve accurate detection of seat temperature and enable adaptive ventilation/heating functions, improving seat comfort and vehicle performance.
Smart Images
Figure CN119245848A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of electronic circuits, and more specifically, to a temperature detection system and a vehicle. Background Art
[0002] The ventilation / heating function of existing car seats can be turned on manually, by voice control, or automatically according to the temperature inside the car.
[0003] However, in the prior art, a temperature sensor is usually installed in the car to detect the temperature inside the car. The temperature inside the car cannot accurately reflect the seat temperature, and the probability of false triggering is high. If a temperature sensor is installed on the seat, the cost of the vehicle will increase. Summary of the invention
[0004] An object of an embodiment of the present invention is to provide a temperature detection system and a vehicle.
[0005] According to a first aspect of the present disclosure, a temperature detection system is provided, comprising a microphone module, a resistor, a voltage sampling module and a temperature detection module, wherein the microphone module and the resistor are connected in series between a power supply terminal and a ground terminal of the temperature detection system, and the microphone module comprises at least a microphone monomer and a triode connected to the microphone monomer;
[0006] The voltage sampling module is configured to sample the voltage across the microphone module;
[0007] The temperature detection module is configured to detect the temperature of the microphone module according to the voltage across the two ends of the microphone module.
[0008] Optionally, the microphone module is arranged in a seat of the vehicle.
[0009] Optionally, the temperature detection system further includes a control module, and the control module is configured to control the air conditioning of the vehicle according to the temperature of the microphone module.
[0010] Optionally, the control module is configured to control the air conditioner to turn on when the temperature of the microphone module is greater than or equal to a first temperature threshold during a target statistical period, or when the temperature of the microphone module is less than or equal to a second temperature threshold during the target statistical period, wherein the first temperature threshold is greater than the second temperature threshold.
[0011] Optionally, the control module is configured to control the air conditioner to turn on a blowing function or a cooling function when the temperature of the microphone module is greater than or equal to a first temperature threshold.
[0012] Optionally, when the temperature of the microphone module is less than or equal to a second temperature threshold, the air conditioner is controlled to turn on a heating function.
[0013] Optionally, the voltage sampling module is an analog-to-digital converter in a power amplifier with an active noise reduction function, and the temperature detection module is a processor in the power amplifier.
[0014] Optionally, the temperature detection system further includes a DC-DC converter, wherein a positive output terminal of the DC-DC converter is connected to the power supply terminal, and a negative output terminal of the DC-DC converter is connected to the ground terminal.
[0015] Optionally, the base of the transistor is connected to the output pin of the microphone unit, the collector of the transistor is connected to the power supply end, and the emitter of the transistor is connected to the ground end.
[0016] According to a second aspect of the present disclosure, a vehicle is provided, comprising the temperature detection system as described in the first aspect of the present disclosure.
[0017] Through this embodiment, the microphone module can be reused, and the temperature can be detected according to the voltage across the microphone module without providing a temperature sensor, thereby reducing hardware costs.
[0018] Further features and advantages of the present invention will become apparent from the following detailed description of exemplary embodiments of the present invention with reference to the attached drawings. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the invention and, together with the description, serve to explain the principles of the invention.
[0020] Figure 1 is a block diagram of a temperature detection system provided according to an embodiment of the present disclosure;
[0021] Figure 2 is a schematic diagram of a relationship curve between voltage and temperature at both ends of a microphone module provided according to an embodiment of the present disclosure;
[0022] Figure 3 is a block diagram of a temperature detection system provided according to another embodiment of the present disclosure; DETAILED DESCRIPTION
[0023] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that the relative arrangement of components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless otherwise specifically stated.
[0024] The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses.
[0025] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be considered part of the specification.
[0026] In all examples shown and discussed herein, any specific values should be interpreted as merely exemplary and not limiting. Therefore, other examples of the exemplary embodiments may have different values.
[0027] It should be noted that like reference numerals and letters refer to similar items in the following figures, and therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.
[0028] The present disclosure provides a temperature detection system. Figure 1 FIG. 1 is a block diagram of a temperature detection system provided according to an embodiment of the present disclosure. Figure 1 As shown, the temperature detection system 1000 may include a microphone module 1100 , a resistor 1200 , a voltage sampling module 1300 and a temperature detection module 1400 .
[0029] The microphone module 1100 and the resistor 1200 may be connected in series between the power terminal VCC and the ground terminal GND of the temperature detection system 1000 . The microphone module 1100 at least includes a microphone unit and a transistor connected to the microphone unit.
[0030] The voltage sampling module 1300 is configured to sample the voltage across the microphone module 1100 .
[0031] The temperature detection module 1400 is configured to detect the temperature of the microphone module 1100 according to the voltage across the two ends of the microphone module 1100 .
[0032] In this embodiment, the transistor 1120 in the microphone module 1100 has a temperature drift characteristic, and the static operating point of the amplifier circuit formed by the transistor 1120 changes with temperature, so that the voltage Vmic across the microphone module 1100 is different at different temperatures. In an example, the relationship between the voltage Vmic across the microphone module 1100 and the temperature can be as follows: Figure 2 shown.
[0033] Through this embodiment, the microphone module can be reused, and the temperature can be detected according to the voltage across the microphone module without providing a temperature sensor, thereby reducing hardware costs.
[0034] In one embodiment of the present disclosure, the microphone unit has a power pin, an output pin and a ground pin. The power pin of the microphone unit can be connected to the power terminal VCC, the ground pin of the microphone unit can be connected to the ground terminal GND, the output pin of the microphone unit can be connected to the base of the transistor, the collector of the transistor is connected to the power terminal VCC, and the emitter of the transistor is connected to the ground terminal GND.
[0035] The connection in this embodiment can be a direct connection or an indirect connection through components such as resistors and capacitors.
[0036] The microphone module of this embodiment also includes components such as multiple capacitors and resistors, which will not be described in detail here.
[0037] The transistor in this embodiment may be an NPN transistor, a PNP transistor, or an insulated gate bipolar transistor (IGBT), which is not limited here.
[0038] Furthermore, the microphone module may include one transistor or multiple transistors, and the types of the multiple transistors may be the same or different, which is not limited here.
[0039] In one embodiment of the present disclosure, the voltage sampling module 1300 is an analog-to-digital converter in a power amplifier with an active noise reduction function, and the temperature detection module 1400 is a processor in the power amplifier.
[0040] In one embodiment of the present disclosure, Figure 3 As shown, the temperature detection system 1000 may further include a DC-DC converter 1500, wherein a positive output terminal of the DC-DC converter 1500 is connected to a power supply terminal VCC, and a negative output terminal of the DC-DC converter 1500 is connected to a ground terminal GND.
[0041] In this embodiment, the DC-DC converter 1500 is a DC-DC converter in a power amplifier with an active noise reduction function, and the resistor 1200 is a resistor arranged in the loop of the DC-DC converter in the power amplifier for phantom powering the microphone module.
[0042] In one embodiment of the present disclosure, the power amplifier may further include a codec module and an amplifier. The audio signal collected by the microphone module is processed by the codec module and then driven by the amplifier to emit an inverse sound wave to achieve an active noise reduction function.
[0043] In one embodiment of the present disclosure, the microphone module 1100 may be disposed inside a vehicle, and the temperature of the microphone module 1100 is the temperature inside the vehicle.
[0044] In another embodiment of the present disclosure, the microphone module 1100 may be disposed in a seat of a vehicle, and then the temperature of the microphone module 1100 is the temperature of the seat.
[0045] In one embodiment of the present disclosure, Figure 3 As shown, the temperature detection system 1000 may further include a control module 1600 , which is configured to control the air conditioning of the vehicle according to the temperature of the microphone module 1100 .
[0046] In this embodiment, the temperature detection module 1400 may transmit the temperature of the microphone module 1100 to the control module 1600 via a CAN (Controller Area Network) network or a LIN (Local Interconnect Network) network.
[0047] In one embodiment of the present disclosure, the control module 1600 is configured to control the air conditioner to turn on when the temperature of the microphone module within the target statistical period is greater than or equal to the first temperature threshold, or when the temperature of the microphone module within the target statistical period is less than or equal to the second temperature threshold.
[0048] The first temperature threshold is greater than the second temperature threshold. The first temperature threshold and the second temperature threshold may be pre-set according to an application scenario or specific requirements. For example, the first temperature threshold may be 35 degrees, and the second temperature threshold may be 10 degrees.
[0049] Furthermore, the target statistical period may be pre-set according to an application scenario or specific requirements. For example, the target statistical period may be the most recent minute.
[0050] In this embodiment, the voltage sampling module 1300 may collect the voltage across the microphone module 1100 at a set frequency, so that the temperature detection module 1400 detects the temperature of the microphone module 1100 at the set frequency.
[0051] During the target statistical period, the temperature detection module 1400 may obtain the temperature of at least one microphone module 1100 .
[0052] The temperature of the microphone module within the target statistical period may be all temperatures of the microphone module within the target statistical period obtained by the temperature detection module 1400, or the average value of all temperatures of the microphone module within the target statistical period obtained by the temperature detection module 1400, or the median of all temperatures of the microphone module within the target statistical period obtained by the temperature detection module 1400.
[0053] When the temperature of the microphone module within the target statistical period is all the temperatures of the microphone module within the target statistical period obtained by the temperature detection module 1400, the control module 1600 may control the air conditioner to turn on when all the temperatures of the microphone module within the target statistical period obtained by the temperature detection module 1400 are greater than or equal to the first temperature threshold, or when all the temperatures of the microphone module within the target statistical period obtained by the temperature detection module 1400 are less than or equal to the second temperature threshold.
[0054] In one embodiment, the control module 1600 is configured to control the air conditioner to turn on the blowing function or the cooling function when the temperature of the microphone module is greater than or equal to the first temperature threshold during the target statistical period.
[0055] In the case where the microphone module 1100 can be set in the seat of the vehicle, the control module 1600 controls the air conditioner to turn on the blowing function, which can realize the automatic ventilation function of the seat.
[0056] In the case where the microphone module 1100 can be arranged inside the vehicle, the control module 1600 can control the air conditioner to start the cooling function when the temperature of the microphone module is greater than or equal to the first temperature threshold within the target statistical period.
[0057] In one embodiment, the control module 1600 is configured to control the air conditioner to start a heating function when the temperature of the microphone module is less than or equal to a second temperature threshold during a target statistical period.
[0058] In the case where the microphone module 1100 can be set in the seat of the vehicle, the control module 1600 controls the air conditioner to turn on the heating function, which can realize the automatic heating function of the seat.
[0059] Through this embodiment, the vehicle can realize adaptive activation and adjustment of the seat ventilation function and the seat heating function.
[0060] In one embodiment, the control module 1600 may be an electronic control unit (ECU) in a vehicle.
[0061] Through this embodiment, there is no need to install a temperature sensor in the seat. The existing power amplifier with active noise reduction function in the car can be reused to detect the temperature of the seat and then adaptively turn on the seat ventilation function or the seat heating function according to the temperature of the seat.
[0062] The present disclosure also provides a vehicle, which may include the aforementioned temperature detection system 1000 .
[0063] The above embodiments mainly focus on describing the differences from other embodiments, but it should be clear to those skilled in the art that the above embodiments can be used alone or in combination with each other as needed.
[0064] Each embodiment in this specification is described in a progressive manner, and the same or similar parts between the embodiments can be referred to each other. Each embodiment focuses on the differences from other embodiments, but it should be clear to those skilled in the art that the above embodiments can be used alone or in combination with each other as needed. In addition, for the device embodiment, since it corresponds to the method embodiment, the description is relatively simple, and the relevant parts can be referred to the description of the corresponding part of the method embodiment. The system embodiment described above is merely illustrative, and the modules described as separate components may or may not be physically separated.
[0065] The present invention may be an apparatus, a method and / or a computer program product. The computer program product may include a computer-readable storage medium carrying computer-readable program instructions for causing a processor to implement various aspects of the present invention.
[0066] A computer-readable storage medium may be a tangible device that can hold and store instructions used by an instruction execution device. A computer-readable storage medium may be, for example, but not limited to, an electrical storage device, a magnetic storage device, an optical storage device, an electromagnetic storage device, a semiconductor storage device, or any suitable combination of the foregoing. More specific examples of computer-readable storage media (a non-exhaustive list) include: a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), a static random access memory (SRAM), a portable compact disk read-only memory (CD-ROM), a digital versatile disk (DVD), a memory stick, a floppy disk, a mechanical compression device, such as a punch card or a raised structure in a groove on which instructions are stored, and any suitable combination of the foregoing. As used herein, a computer-readable storage medium is not to be interpreted as a transient signal per se, such as a radio wave or other freely propagating electromagnetic wave, an electromagnetic wave propagating through a waveguide or other transmission medium (e.g., a light pulse through a fiber optic cable), or an electrical signal transmitted through a wire.
[0067] The computer-readable program instructions described herein can be downloaded from a computer-readable storage medium to each computing / processing device, or downloaded to an external computer or external storage device via a network, such as the Internet, a local area network, a wide area network, and / or a wireless network. The network can include copper transmission cables, optical fiber transmissions, wireless transmissions, routers, firewalls, switches, gateway computers, and / or edge servers. The network adapter card or network interface in each computing / processing device receives the computer-readable program instructions from the network and forwards the computer-readable program instructions for storage in the computer-readable storage medium in each computing / processing device.
[0068] The computer program instructions for performing the operation of the present invention may be assembly instructions, instruction set architecture (ISA) instructions, machine instructions, machine-related instructions, microcode, firmware instructions, state setting data, or source code or object code written in any combination of one or more programming languages, including object-oriented programming languages, such as Smalltalk, C++, etc., and conventional procedural programming languages, such as "C" language or similar programming languages. Computer-readable program instructions may be executed entirely on a user's computer, partially on a user's computer, as an independent software package, partially on a user's computer, partially on a remote computer, or entirely on a remote computer or server. In the case of a remote computer, the remote computer may be connected to the user's computer via any type of network, including a local area network (LAN) or a wide area network (WAN), or may be connected to an external computer (e.g., using an Internet service provider to connect via the Internet). In some embodiments, an electronic circuit, such as a programmable logic circuit, a field programmable gate array (FPGA), or a programmable logic array (PLA), may be personalized by utilizing the state information of the computer-readable program instructions, and the electronic circuit may execute the computer-readable program instructions, thereby realizing various aspects of the present invention.
[0069] Various aspects of the present invention are described herein with reference to the flow charts and / or block diagrams of the methods, devices (systems) and computer program products according to embodiments of the present invention. It should be understood that each box of the flow chart and / or block diagram and the combination of each box in the flow chart and / or block diagram can be implemented by computer-readable program instructions.
[0070] These computer-readable program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, or other programmable data processing device, thereby producing a machine, so that when these instructions are executed by the processor of the computer or other programmable data processing device, a device that implements the functions / actions specified in one or more boxes in the flowchart and / or block diagram is generated. These computer-readable program instructions can also be stored in a computer-readable storage medium, and these instructions cause the computer, programmable data processing device, and / or other equipment to work in a specific manner, so that the computer-readable medium storing the instructions includes a manufactured product, which includes instructions for implementing various aspects of the functions / actions specified in one or more boxes in the flowchart and / or block diagram.
[0071] Computer-readable program instructions may also be loaded onto a computer, other programmable data processing apparatus, or other device so that a series of operating steps are performed on the computer, other programmable data processing apparatus, or other device to produce a computer-implemented process, thereby causing the instructions executed on the computer, other programmable data processing apparatus, or other device to implement the functions / actions specified in one or more boxes in the flowchart and / or block diagram.
[0072] The flowcharts and block diagrams in the accompanying drawings show the possible architecture, functions and operations of the systems, methods and computer program products according to multiple embodiments of the present invention. In this regard, each box in the flowchart or block diagram can represent a module, a program segment or a part of an instruction, and the module, a program segment or a part of an instruction contains one or more executable instructions for realizing the specified logical function. In some alternative implementations, the functions marked in the box can also occur in a different order from the order marked in the accompanying drawings. For example, two consecutive boxes can actually be executed substantially in parallel, and they can sometimes be executed in the opposite order, depending on the functions involved. It should also be noted that each box in the block diagram and / or the flowchart, and the combination of the boxes in the block diagram and / or the flowchart can be implemented by a dedicated hardware-based system that performs the specified function or action, or can be implemented by a combination of dedicated hardware and computer instructions. It is well known to those skilled in the art that it is equivalent to implement it by hardware, implement it by software, and implement it by combining software and hardware.
[0073] Embodiments of the present invention have been described above, and the above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The choice of terms used herein is intended to best explain the principles of the embodiments, practical applications, or technical improvements to the technology in the marketplace, or to enable other persons of ordinary skill in the art to understand the embodiments disclosed herein. The scope of the present invention is defined by the appended claims.
Claims
1. A temperature detection system, characterized in that: It includes a microphone module, a resistor, a voltage sampling module and a temperature detection module, wherein the microphone module and the resistor are connected in series between a power supply terminal and a ground terminal of the temperature detection system, and the microphone module includes at least a microphone monomer and a triode connected to the microphone monomer; The voltage sampling module is configured to sample the voltage across the microphone module; The temperature detection module is configured to detect the temperature of the microphone module according to the voltage across the two ends of the microphone module.
2. The temperature detection system according to claim 1, characterized in that: The microphone module is arranged in a seat of the vehicle.
3. The temperature detection system according to claim 2, characterized in that: The temperature detection system also includes a control module, which is configured to control the air conditioner of the vehicle according to the temperature of the microphone module.
4. The temperature detection system according to claim 3, characterized in that: The control module is configured to control the air conditioner to turn on when the temperature of the microphone module is greater than or equal to a first temperature threshold during a target statistical period, or when the temperature of the microphone module is less than or equal to a second temperature threshold during the target statistical period, wherein the first temperature threshold is greater than the second temperature threshold.
5. The temperature detection system according to claim 4, characterized in that: The control module is configured to control the air conditioner to start a blowing function or a cooling function when the temperature of the microphone module is greater than or equal to a first temperature threshold.
6. The temperature detection system according to claim 4, characterized in that: When the temperature of the microphone module is less than or equal to a second temperature threshold, the air conditioner is controlled to start a heating function.
7. The temperature detection system according to claim 1, characterized in that: The voltage sampling module is an analog-to-digital converter in a power amplifier with an active noise reduction function, and the temperature detection module is a processor in the power amplifier.
8. The temperature detection system according to claim 1, characterized in that: The temperature detection system further includes a DC-DC converter, wherein a positive output terminal of the DC-DC converter is connected to the power supply terminal, and a negative output terminal of the DC-DC converter is connected to the ground terminal.
9. The temperature detection system according to claim 1, characterized in that: The base of the transistor is connected to the output pin of the microphone unit, the collector of the transistor is connected to the power supply end, and the emitter of the transistor is connected to the ground end.
10. A vehicle, characterized in that: A temperature detection system according to any one of claims 1 to 9.