Temperature sensor and vehicle

Abstract

The utility model relates to the field of sensor technology, and specifically discloses a temperature sensor and a vehicle, wherein the temperature sensor comprises: a detection housing, a temperature detection module, an electromagnetic detection module and a controller; the temperature detection module is arranged in the cavity of the detection housing, and is used to detect the temperature of the detected liquid; the electromagnetic detection module is arranged in the cavity of the detection housing, and is used to detect the electromagnetic field strength in the cavity of the detection housing, and the electromagnetic detection module is electrically connected to the temperature detection module. The temperature signal detected by the received temperature detection module is calibrated and corrected by the signal of the electromagnetic field strength detected by the electromagnetic detection module, so as to ensure the accuracy of the temperature detected by the temperature detection module; and when the vehicle is conducting a radiation interference resistance test, it can avoid interference signals from interfering with the temperature detected by the temperature detection module, thereby improving work efficiency.

Description

Technical Field

[0001] The utility model relates to the technical field of sensors, in particular to a temperature sensor and a vehicle. Background Art

[0002] At present, automotive temperature sensors are mainly installed in automobiles to detect engine cooling water temperature, fuel temperature, etc., and convert the measurement results into electrical signals and transmit them to the ECU (electronic controller).

[0003] There are many types of temperature sensors for automobiles, the commonly used ones are thermistor type, metal thermal resistor type, wirewound resistor type, transistor type, etc. Thermistors can be divided into positive temperature coefficient (PTC) thermistors, negative temperature coefficient (NTC) thermistors, critical temperature thermistors (CTR) and linear thermistors. Among them, the water temperature sensor is an NTC thermistor. The voltage is divided by the pull-up resistor inside the ECU, and the water temperature is obtained after passing through the current limiting resistor and the filter capacitor. When the water temperature changes, the RT (resistance value) is different, thus obtaining different water temperatures. During the radiation immunity test, interference signals may be coupled in, causing the water temperature inside the ECU to change, thereby causing the instrument water temperature alarm, resulting in inaccurate temperature measurement. Utility Model Content

[0004] The utility model aims to provide a temperature sensor and a vehicle to solve the problem that the existing temperature sensor has inaccurate temperature measurement due to electromagnetic interference.

[0005] On the one hand, the utility model provides a temperature sensor, which includes: a detection shell; a temperature detection module, which is arranged in the cavity of the detection shell and is used to detect the temperature of the liquid to be detected; an electromagnetic detection module, which is arranged in the cavity of the detection shell and is used to detect the electromagnetic field strength in the cavity of the detection shell, and the electromagnetic detection module is electrically connected to the temperature detection module.

[0006] As an optional technical solution for the temperature sensor, the temperature sensor also includes a controller, which is electrically connected to the temperature detection module and the electromagnetic detection module, and is used to receive electrical signals transmitted by the temperature detection module and the electromagnetic detection module, and can calibrate the received electrical signals of the temperature detection module through the electrical signals of the electromagnetic detection module.

[0007] As an optional technical solution for the temperature sensor, the detection shell at one end where the temperature detection module is located extends into the pipeline of the detected liquid and contacts the detected liquid. The detection shell at one end where the electromagnetic detection module is located is located outside the pipeline of the detected liquid. The depth of the detection shell extending into the pipeline of the detected liquid is H, 15mm≤H≤25mm.

[0008] As an optional technical solution of the temperature sensor, the temperature sensor also includes a sealing member, which is sleeved on the detection housing and can seal the gap at the connection between the detection housing and the pipeline of the detected liquid.

[0009] As an optional technical solution for the temperature sensor, the detection shell is cylindrical, and the diameter of the detection shell is R, 5mm≤R≤10mm.

[0010] As an optional technical solution for the temperature sensor, the temperature detection module is a thermistor and the electromagnetic detection module is a magnetoresistor.

[0011] As an optional technical solution for the temperature sensor, the detection shell includes a first pin and a second pin. The temperature detection module is electrically connected to the controller through the first pin to transmit a temperature signal to the controller; the electromagnetic detection module is electrically connected to the controller through the second pin to transmit an electromagnetic field strength signal to the controller.

[0012] As an optional technical solution for the temperature sensor, the detection housing also includes a third pin, and the temperature sensor also includes a power module for supplying power to the temperature detection module and the electromagnetic detection module. The controller is electrically connected to the power module through the third pin to supply power to the power module.

[0013] As an optional technical solution of the temperature sensor, the detection housing further includes a fourth pin, and the fourth pin is used to be connected to the ground.

[0014] As an optional technical solution for the temperature sensor, the temperature sensor also includes a connector, the temperature detection module and the electromagnetic detection module are both electrically connected to the connector, and the connector can be plugged into the controller.

[0015] On the other hand, the utility model provides a vehicle, comprising an engine and a temperature sensor in any of the above solutions, wherein the temperature sensor is installed in a cooling water pipeline or a fuel pipeline of the engine.

[0016] The beneficial effects of the utility model are:

[0017] The utility model provides a temperature sensor, which comprises: a detection shell, a temperature detection module and an electromagnetic detection module; the temperature detection module and the electromagnetic detection module are both arranged in the cavity of the detection shell, and the electromagnetic detection module and the temperature detection module are electrically connected, so that the temperature detection module can be used to detect the temperature of the detected liquid, and at the same time, the electromagnetic detection module can also detect the electromagnetic field strength in the cavity of the detection shell, and then the temperature signal detected by the received temperature detection module can be calibrated and corrected according to the signal of the electromagnetic field strength detected by the electromagnetic detection module, so as to ensure the accuracy of the temperature detected by the temperature detection module; the temperature sensor of the utility model can avoid the interference signal from interfering with the temperature detected by the temperature detection module when the vehicle is subjected to the radiation anti-interference test, thereby improving the work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 The structure of the temperature sensor in the embodiment of the utility model is shown in FIG. Figure 1 ;

[0019] Figure 2 The structure of the temperature sensor in the embodiment of the utility model is shown in FIG. Figure 2 ;

[0020] Figure 3 The structure of the temperature sensor in the embodiment of the utility model is shown in FIG. Figure 3 .

[0021] In the figure:

[0022] 1. Detection housing; 2. Temperature detection module; 3. Electromagnetic detection module; 4. Controller; 5. Seal; 6. Connector; 7. Detected liquid; 81. First pin; 82. Second pin; 83. Third pin; 84. Fourth pin. DETAILED DESCRIPTION

[0023] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying 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 present utility model. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. Among them, the terms "first position" and "second position" are two different positions, and the first feature "above", "above" and "above" the second feature include the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. The first feature "below", "below" and "below" the second feature include the first feature being directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0025] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" 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 the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0026] 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.

[0027] like Figures 1 to 3As shown, this embodiment provides a temperature sensor, which includes a detection housing 1, a temperature detection module 2, an electromagnetic detection module 3 and a controller 4; the temperature detection module 2 is arranged in the cavity of the detection housing 1, so that the temperature of the detected liquid 7 can be detected; the electromagnetic detection module 3 is arranged in the cavity of the detection housing 1, and the electromagnetic detection module 3 and the temperature detection module 2 are electrically connected, so that the electromagnetic field strength in the detection housing 1 can be detected at the same time, and the staff can calculate the electromagnetic field strength signal of the received electromagnetic detection module 3, thereby calibrating and correcting the temperature signal of the received temperature detection module 2, ensuring the accuracy of the temperature detected by the temperature detection module 2, and at the same time, it can avoid the interference signal from interfering with the temperature detected by the temperature detection module when the vehicle is performing radiation anti-interference test, thereby improving work efficiency. In addition, in the case of a water temperature alarm in the vehicle EMC (electromagnetic compatibility) experiment, there is no need for the vehicle manufacturer to perform anti-interference processing on the connected wiring harness, or adjust its own application circuit. The temperature sensor provided in this embodiment can effectively improve work efficiency, reduce layout difficulty, and also reduce the cost of the vehicle.

[0028] Among them, the temperature sensor also includes a controller 4, which can be electrically connected to the temperature detection module 2 and the electromagnetic detection module 3. The controller 4 can calibrate the received electrical signal of the temperature detection module 2 through the electrical signal of the electromagnetic detection module 3, thereby ensuring the accuracy of the temperature detected by the temperature detection module 2.

[0029] In order to ensure the accuracy of the detected temperature signal and the electromagnetic field strength signal, the detection shell 1 at one end of the temperature detection module 2 in the present embodiment extends into the pipeline of the detected liquid 7 and is able to contact the detected liquid 7. At the same time, the depth H of the detection shell 1 extending into the pipeline of the detected liquid 7 is limited to 15mm≤H≤25mm, thereby preventing the detection shell 1 from extending too deeply into the pipeline of the detected liquid 7, thereby causing the problem of poor circulation of the detected liquid 7. In addition, the detection shell 1 at one end of the electromagnetic detection module 3 is located outside the pipeline of the detected liquid 7, so that the strength of the electromagnetic field outside the pipeline of the detected liquid 7 can be detected in real time, thereby achieving the purpose of detecting the electromagnetic field strength at the location.

[0030] In this embodiment, the temperature sensor further includes a sealing member 5, which is sleeved on the detection housing 1, and can seal the gap between the detection housing 1 and the pipeline connection of the detected liquid 7 through the sealing member 5, thereby preventing leakage. The sealing member 5 can be, but is not limited to, a sealing ring made of rubber.

[0031] Specifically, the shape of the detection housing 1 can be, but is not limited to, a cylindrical shape, wherein the diameter of the detection housing 1 is R, 5 mm ≤ R ≤ 10 mm. In this way, the diameter R of the detection housing 1 is limited within the above numerical range, which can avoid the problem that the diameter of the detection housing 1 is too large, thereby causing the detected liquid 7 to flow unsmoothly.

[0032] In this embodiment, the temperature detection module 2 is a thermistor, wherein the thermistor has the advantages of high sensitivity, wide operating temperature range, small size, easy use, good stability, strong overload capacity, fast response speed and high accuracy, and low circuit requirements; the electromagnetic detection module 3 is a magnetoresistor, which has the advantages of simple structure and long service life.

[0033] Specifically, the detection housing 1 includes a first pin 81 and a second pin 82, and the temperature detection module 2 is electrically connected to the controller 4 through the first pin 81, so that the temperature signal can be transmitted to the controller 4; similarly, the electromagnetic detection module 3 can be electrically connected to the controller 4 through the second pin 82, so that the electromagnetic field strength signal can be transmitted to the controller 4.

[0034] Furthermore, the detection housing 1 also includes a third pin 83, and the temperature sensor also includes a power module for supplying power to the temperature detection module 2 and the electromagnetic detection module 3. The controller 4 can be electrically connected to the power module through the third pin 83, thereby supplying power to the power module to meet the power requirements of the temperature detection module 2 and the electromagnetic detection module 3, wherein the power supply voltage is 5V.

[0035] In this embodiment, the detection housing 1 further includes a fourth pin 84, and the fourth pin 84 is provided to be connected to the ground, thereby ensuring the normal operation of the temperature sensor.

[0036] Specifically, the temperature sensor also includes a connector 6, and the temperature detection module 2 and the electromagnetic detection module 3 are both electrically connected to the connector 6. The connector 6 can be plugged into the controller 4, so that the controller can supply power and receive signals at the same time, so that a more reasonable judgment can be made on the water temperature in this situation.

[0037] Optionally, the temperature sensor also includes a protective cover, which can protect the connection harness between the temperature detection module 2, the electromagnetic detection module 3 and the connector 6, and at the same time the connection harness is shielded to avoid interference with the temperature detected by the temperature detection module 2.

[0038] This embodiment also provides a vehicle, including an engine and the above-mentioned temperature sensor, the temperature sensor being installed in the engine cooling water pipeline or the fuel pipeline. The vehicle provided by this embodiment can improve the original temperature sensor, so that the temperature sensor can detect the temperature signal and the intensity of the electromagnetic field at the same time. In the case of the water temperature alarm of the EMC (electromagnetic compatibility) experiment, the vehicle manufacturer does not need to perform anti-interference processing on the connected wiring harness or adjust its own application circuit, thereby improving work efficiency, reducing the difficulty of layout, and also reducing the cost of the vehicle.

[0039] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all implementation methods here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included in the protection scope of the claims of the present invention.

Claims

1. A temperature sensor, characterized in that: include: Detecting the housing (1); A temperature detection module (2) is arranged in the cavity of the detection housing (1) and is used to detect the temperature of the detected liquid (7); The electromagnetic detection module (3) is arranged in the cavity of the detection shell (1) and is used to detect the electromagnetic field intensity in the cavity of the detection shell (1), and the electromagnetic detection module (3) is electrically connected to the temperature detection module (2).

2. The temperature sensor according to claim 1, characterized in that: The temperature sensor also includes a controller (4), which is electrically connected to the temperature detection module (2) and the electromagnetic detection module (3) and is used to receive electrical signals transmitted by the temperature detection module (2) and the electromagnetic detection module (3), and is capable of calibrating the received electrical signals of the temperature detection module (2) through the electrical signals of the electromagnetic detection module (3).

3. The temperature sensor according to claim 1, characterized in that: The detection housing (1) at one end where the temperature detection module (2) is located extends into the pipeline of the detected liquid (7) and contacts the detected liquid (7); the detection housing (1) at one end where the electromagnetic detection module (3) is located is located outside the pipeline of the detected liquid (7); the depth of the detection housing (1) extending into the pipeline of the detected liquid (7) is H, and 15 mm ≤ H ≤ 25 mm.

4. The temperature sensor according to claim 3, characterized in that: The temperature sensor further comprises a sealing member (5), wherein the sealing member (5) is sleeved on the detection housing (1) and is capable of sealing a gap at a connection between the detection housing (1) and a pipeline of the detected liquid (7).

5. The temperature sensor according to claim 1, characterized in that: The detection housing (1) is cylindrical, and the diameter of the detection housing (1) is R, 5mm≤R≤10mm.

6. The temperature sensor according to claim 1, characterized in that: The temperature detection module (2) is a thermistor, and the electromagnetic detection module (3) is a magnetoresistor.

7. The temperature sensor according to claim 2, characterized in that: The detection housing (1) comprises a first pin (81) and a second pin (82); the temperature detection module (2) is electrically connected to the controller (4) via the first pin (81) so as to transmit a temperature signal to the controller (4); and the electromagnetic detection module (3) is electrically connected to the controller (4) via the second pin (82) so as to transmit an electromagnetic field strength signal to the controller (4).

8. The temperature sensor according to claim 7, characterized in that: The detection housing (1) further comprises a third pin (83), the temperature sensor further comprises a power module for supplying power to the temperature detection module (2) and the electromagnetic detection module (3), and the controller (4) is electrically connected to the power module via the third pin (83) to supply power to the power module.

9. The temperature sensor according to claim 8, characterized in that: The detection housing (1) further comprises a fourth pin (84), wherein the fourth pin (84) is used for connecting to the ground.

10. The temperature sensor according to claim 2, characterized in that: The temperature sensor also includes a connector (6), the temperature detection module (2) and the electromagnetic detection module (3) are both electrically connected to the connector (6), and the connector (6) can be plugged into the controller (4).

11. A vehicle, characterized in that: It comprises an engine and a temperature sensor according to any one of claims 1 to 10, wherein the temperature sensor is installed in a cooling water pipeline or a fuel pipeline of the engine.

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