Three-in-one sensor

Abstract

The utility model relates to a three-in-one sensor, comprising a sensor rotating shaft; the sensor bottom shell is sleeved outside the sensor rotating shaft; the position detection assembly is used for detecting the rotation angle of the valve body door shaft; the pressure detection assembly is used for detecting the air inlet pressure in the valve body door shaft; comprising a gas inlet pressure detection hole which is connected with a valve body and is used for gas to enter, a pressure chip which obtains different piezoresistive signals based on gas pressure, and a pressure buffer piece which has two ends respectively connected with the gas inlet pressure detection hole and the pressure chip and is used for buffering gas flowing to the pressure chip, the air inlet temperature probe is used for detecting the temperature in the valve body door shaft; the circuit board is connected with the position detection assembly, the pressure chip of the pressure detection assembly and the air inlet temperature probe and transmits obtained signals to an external engine ECU (Electronic Control Unit); and the sensor upper shell is matched with the sensor bottom shell. Compared with the prior art, the system has the advantages that the reliability of the system is improved, and the driving safety is ensured.

Description

Technical Field

[0001] The utility model relates to a throttle sensor, in particular to a three-in-one sensor. Background Art

[0002] Currently, mechanical valve bodies are the most commonly used on motorcycles. However, with the increasing demand for power and economy, a new electronic valve body has emerged, which changes the connection between the accelerator pedal and the valve body from a rigid connection to a flexible connection. The flexible connection method eliminates the traditional mechanical connection and controls the valve body's rapid and precise positioning through the electronic control unit. Its advantage is that it can determine the optimal valve opening according to the driver's needs and various driving conditions of the vehicle, ensuring the vehicle's optimal power and fuel economy. It also has control functions such as traction control and cruise control, improving safety and ride comfort.

[0003] The accelerator pedal and valve body are flexibly connected, and the valve opening signal provided by the position sensor is particularly important. Existing electronic valve status sensors use dual position sensors integrated with the drive motor. This not only takes up a lot of space, but also lacks an adaptable solution for the intake air temperature and pressure sensors, resulting in high replacement costs.

[0004] Patent publication number CN108955777A discloses a three-in-one sensor, comprising a housing mounted on the throttle valve and its valve shaft and connected to the intake manifold and the ECU; a PCB located within the housing; a negative temperature coefficient thermistor (NTC) mounted on the PCB; a pressure chip; and a front cover adapted to fit within the housing. The housing houses a position sensor module capable of sensing changes in magnetic polarity and thereby varying the output voltage. The front cover is provided with a positioning pin; the position sensor module is provided with a through-hole adapted to fit the positioning pin; and a bushing is provided within the position sensor module. A magnetic block is provided on the end surface of the bushing corresponding to the position sensor; the magnetic block is fixedly connected to the bushing; a first groove is provided at the end of the bushing that is adapted to fit within the throttle valve shaft; and a metal bushing with a through-hole adapted to fit within the end of the bushing is also provided. However, the intake duct gas in this three-in-one sensor fluctuates significantly, which can affect the pressure chip's measurements to a certain extent, thereby reducing the accuracy of the ECU's corrections for injection quantity and ignition timing. Utility Model Content

[0005] The purpose of this utility model is to provide a three-in-one sensor in order to overcome the defects of the above-mentioned prior art, improve the reliability of the system and ensure the safety of driving.

[0006] The purpose of the utility model can be achieved through the following technical solutions:

[0007] A three-in-one sensor, comprising:

[0008] A sensor shaft connected to the valve body door shaft and rotatable;

[0009] A sensor bottom shell sleeved outside the sensor shaft;

[0010] A position detection component located in the sensor bottom shell and used to detect the rotation angle of the valve body door shaft;

[0011] A pressure detection assembly located in the sensor bottom housing and used to detect the intake pressure in the valve body shaft, including an intake pressure detection hole connected to the valve body and for gas to enter, a pressure chip that obtains different piezoresistance signals based on the gas pressure, and a pressure buffer member with two ends respectively connected to the intake pressure detection hole and the pressure chip and used to buffer the gas flowing to the pressure chip;

[0012] An intake air temperature probe located in the sensor bottom shell and used to detect the temperature inside the valve body door shaft;

[0013] The circuit board is connected to the position detection component, the pressure chip of the pressure detection component, and the intake air temperature probe and transmits the obtained signals to the external engine ECU, and the circuit board is located inside the sensor bottom shell and above the sensor shaft;

[0014] and a sensor upper shell located above the circuit board and adapted to the sensor bottom shell.

[0015] Furthermore, the pressure buffer comprises:

[0016] case;

[0017] A first channel having two ends passing through the housing and connecting the intake pressure detection hole and the pressure chip;

[0018] and second channels located at both ends of the first channel, each with a larger diameter than the first channel. The pressure buffer's primary function is sealing and buffering the backlash of airflow flowing directly from the intake pressure detection hole to the pressure chip. The second channels mitigate intake air fluctuations by storing a certain amount of airflow.

[0019] Furthermore, the cross section of the first channel is circular, and the cross section of the second channel is square.

[0020] Furthermore, the shell through which the first hole and the second hole are passed has a certain wall thickness to prevent incomplete sealing.

[0021] Furthermore, the bottom of the sensor bottom shell is further provided with an air flow smoothing groove, and the intake pressure detection hole is provided in the air flow smoothing groove. The air flow smoothing groove is used to buffer the gas.

[0022] Furthermore, the air flow smoothing groove is a "concave"-shaped structure, and the intake pressure detection hole is located at one end of the "concave".

[0023] Furthermore, the position detection component includes:

[0024] A magnet disposed at the top end of the sensor shaft;

[0025] and a position chip located above the magnet and capable of sensing changes in different magnetic poles of the magnet and changing the magnitude of the output voltage; the position chip is connected to the circuit board.

[0026] Furthermore, the top end of the sensor shaft is provided with a first groove for accommodating the magnet;

[0027] A magnet packaging sleeve is provided above the magnet and is connected to the first groove and is used to wrap and seal the magnet;

[0028] The upper surface of the magnet packaging sleeve is provided with a second groove for placing the position chip.

[0029] Furthermore, the magnet is engaged with the first groove by interference fit.

[0030] Furthermore, there is a certain distance between the position chip and the second groove, so that the sensor shaft can drive the magnet to rotate smoothly.

[0031] Furthermore, the sensor shaft can rotate around the valve body door axis by 0 to 220 degrees, and the sensor bottom shell cannot rotate.

[0032] Furthermore, the position chip is a dual-channel chip, which realizes dual redundancy design. During operation, only one channel is active, and the other channel serves as a backup channel, which can switch channels when a communication error occurs.

[0033] Furthermore, the interior of the sensor bottom shell has a space for accommodating the circuit board, the position detection component, the pressure detection component, and the intake air temperature probe, and the bottom thereof is provided with a hole for the sensor shaft to pass through.

[0034] Furthermore, a hollow tube for accommodating the intake air temperature probe is provided at the bottom of the sensor bottom shell.

[0035] Furthermore, the hollow tube and the sensor bottom shell are integrally formed by injection molding.

[0036] Furthermore, the intake air temperature probe is a thermistor, the pins of the thermistor are welded on the circuit board, and the thermistor is installed in a hollow tube to detect the intake air temperature and output a signal to the ECU through the pins of the circuit board.

[0037] Furthermore, a rotating shaft metal sheet for connecting with the valve body door shaft is installed below the sensor rotating shaft.

[0038] Furthermore, the rotating shaft metal sheet includes a first metal sheet, a second metal sheet, a third metal sheet and a fourth metal sheet connected end to end, the first metal sheet, the second metal sheet and the third metal sheet are in a U-shaped structure, the third metal sheet and the fourth metal sheet are in a V-shaped structure, and the fourth metal sheet is located in the U-shaped structure formed by the first metal sheet, the second metal sheet and the third metal sheet.

[0039] Furthermore, the sensor shaft is a plastic part, and the first metal sheet and the fourth metal sheet clamp the valve body shaft to protect the sensor shaft and reduce the friction between the sensor shaft and the valve body shaft.

[0040] Furthermore, the first metal sheet is provided with a protrusion, and the sensor shaft is provided with a third groove adapted to the protrusion, and the shaft metal sheet and the sensor shaft are connected via the protrusion and the third groove.

[0041] Furthermore, a power chip is provided on the circuit board (3) for supplying power to the three-in-one sensor, and a low dropout regulator (LDO) is provided for protection.

[0042] Furthermore, a plurality of through holes are provided on the circuit board, and fixing bolts pass through the through holes to connect the circuit board with the sensor bottom shell.

[0043] Furthermore, the circuit board is provided with a plurality of glue holes for glue filling. After the three-in-one sensor is assembled, glue is filled inside to increase the multiple functions of the three-in-one sensor, such as waterproof and moisture-proof, dust-proof and pollution-proof, temperature stable protection, mechanical protection and chemical protection.

[0044] Furthermore, the sensor upper shell and the sensor lower shell are obtained by ultrasonic welding.

[0045] Furthermore, a bushing is provided on the sensor bottom shell for improving the fastness and wear resistance of the three-in-one sensor after assembly.

[0046] Furthermore, the bushing is a metal part, which is inserted when the sensor bottom shell mold is formed.

[0047] Furthermore, a special-shaped sealing ring is provided at the bottom of the sensor bottom shell for ensuring the overall sealing of the three-in-one sensor after assembly.

[0048] Compared with the prior art, the utility model has the following advantages:

[0049] (1) This utility model is a three-in-one sensor. Compared with the existing electronic valve body that uses a motor and a two-in-one sensor, the three-in-one sensor integrates multiple sensors into one, thereby simplifying the design and installation of the electronic valve body gear and being more economical. The three-in-one sensor has the advantages of small size, light weight, low price, and fast response speed, which can improve the operating efficiency and fuel economy of the engine.

[0050] (2) The gas in the motorcycle engine intake duct fluctuates greatly, which will affect the measurement of the pressure chip to a certain extent, thereby reducing the accuracy of the ECU's correction of the injection amount and ignition timing angle. The three-in-one sensor of the present invention provides a pressure buffer on the pressure chip and the intake pressure detection hole to buffer the gas flowing to the pressure chip, thereby improving the pressure chip detection accuracy and thus improving the ECU control accuracy.

[0051] (3) In the present invention, the gas is first buffered in the air flow smoothing groove and then buffered for the second time by the pressure buffer component, which can make the pressure on the pressure chip more gentle, thereby further improving the detection accuracy of the pressure chip and enhancing the control accuracy of the ECU.

[0052] (4) The position detection component in the three-in-one sensor provided by the present invention structurally uses a magnet set at the top of the sensor shaft, and a position chip located on the side of the magnet and capable of sensing the changes in the different magnetic poles of the magnet and changing the output voltage. Using the Hall effect principle, the rotational motion of the valve body door shaft is converted into a linear output voltage proportional to the rotation angle of the sensor.

[0053] (5) The positioning chip of the present invention is a dual-channel chip. The dual-channel chip achieves a dual-redundancy design. During operation, only one channel is active, and the other channel serves as a backup channel, which can be switched when a communication error occurs. From a control perspective, the system can operate normally using only one sensor, but the redundant design allows the two sensors to detect each other. When a sensor fails, it can be identified in a timely manner, greatly increasing the reliability of the system and ensuring driving safety.

[0054] (6) The utility model is a three-in-one sensor, which is mainly assembled on an electronic valve body for use. The sensor is not restricted by the initial angle position during production, and the angle is calibrated after assembly, which can reduce errors and improve accuracy, and also reduce the scrap rate of the sensor. BRIEF DESCRIPTION OF THE DRAWINGS

[0055] Figure 1 is an exploded schematic diagram of the three-in-one sensor shown in Example 1;

[0056] Figure 2This is a schematic diagram of the internal structure of the three-in-one sensor bottom shell shown in Example 1;

[0057] Figure 3 is a three-dimensional schematic diagram of the three-in-one sensor shown in Example 1;

[0058] Figure 4 is a top view of the three-in-one sensor shown in Example 1;

[0059] Figure 5 is a schematic diagram of the positions of the pressure detection assembly and the magnet shown in Example 1;

[0060] Figure 6 Schematic diagram of the structure of the pressure buffer shown in Example 1, (a) top view, (b) three-dimensional view.

[0061] Figure 7 This is a schematic diagram of the three-in-one structure of the sensor shown in Example 1 with the bottom surface of the bottom shell facing upwards;

[0062] Figure 8 This is a plan view of the three-in-one sensor shown in Example 1 with the bottom surface of the bottom shell facing upwards;

[0063] Figure 9 Schematic diagram of the position chip shown in Example 1;

[0064] Figure 10 This is a schematic structural diagram of the rotating shaft metal sheet shown in Example 1;

[0065] Figure 11 This is a schematic structural diagram of the through hole and the glue-filling hole shown in Example 1.

[0066] Description of the marks in the figure:

[0067] 1-Sensor bottom shell, 11-Airflow smoothing groove, 12-Hollow tube, 13-Special-shaped sealing ring;

[0068] 2-Sensor upper shell;

[0069] 3-circuit board, 31-through hole, 32-fixing bolt, 33-glue filling hole, 34-bushing;

[0070] 4-position detection component, 41-magnet, 42-position chip;

[0071] 5-pressure detection component, 51-pressure chip, 52-pressure buffer, 521-housing, 522-first hole, 523-second hole, 53-intake pressure detection hole;

[0072] 6-Intake air temperature probe;

[0073] 7-sensor shaft, 71-first groove, 72-magnet packaging sleeve, 721-second groove, 73-shaft metal sheet, 731-first metal sheet, 7311-bump, 732-second metal sheet, 733-third metal sheet, 734-fourth metal sheet, 74-third groove;

[0074] 8-Power chip. DETAILED DESCRIPTION

[0075] The present invention is described in detail below with reference to the accompanying drawings and specific embodiments. The embodiments are based on the technical solution of the present invention and provide detailed implementation methods and specific operating procedures. However, the scope of protection of the present invention is not limited to the following embodiments. In the following embodiments or examples, unless otherwise specified, functional components or structures are conventional components or structures used in the art to achieve the corresponding functions.

[0076] It should be noted that in the description of this utility model, the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," "the other end," and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They are not intended to indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0077] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "provided with," "connected," etc. should be understood in a broad sense. For example, "connected" can mean 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 an indirect connection through an intermediate medium, or it can be internal communication between two components. Those skilled in the art will be able to understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0078] Example 1

[0079] A three-in-one sensor, see Figures 1 to 5 ,include:

[0080] A sensor shaft 7 connected to the valve body door shaft and rotatable;

[0081] A sensor bottom shell 1 sleeved outside the sensor shaft 7;

[0082] A position detection component 4 located in the sensor bottom shell 1 and used to detect the rotation angle of the valve body door shaft;

[0083] A pressure detection assembly 5 located within the sensor base 1 and used to detect the intake pressure within the valve body shaft includes an intake pressure detection hole 53 connected to the valve body and allowing gas to enter, a pressure chip 51 that generates different piezoresistance signals based on gas pressure, and a pressure buffer 52 having two ends connected to the intake pressure detection hole 53 and the pressure chip 51, respectively, and used to buffer gas flowing toward the pressure chip 51.

[0084] An intake air temperature probe 6 located in the sensor bottom housing 1 and used to detect the temperature inside the valve body door shaft;

[0085] Connected to the position detection component 4, the pressure chip 51 of the pressure detection component 5, and the intake air temperature probe 6, and transmits the obtained signals to the circuit board 3 of the external engine ECU, the circuit board 3 is located inside the sensor bottom shell 1 and above the sensor shaft 7;

[0086] And a sensor upper shell 2 located above the circuit board 3 and adapted to the sensor bottom shell 1.

[0087] In this embodiment, see Figure 5 and Figure 6 , the pressure buffer 52 is a square pad, comprising:

[0088] Housing 521;

[0089] The first channel 522 of the pressure chip 51 passes through the housing 521 at both ends and connects the intake pressure detection hole 53 and the pressure chip 51;

[0090] Second channels 523 are located at both ends of the first channel 522 and have a larger diameter than the first channel 522. The pressure buffer 52 primarily functions as a seal and provides a buffer against the backlash of airflow flowing directly from the intake pressure detection hole 53 to the pressure chip. The second channels 523 mitigate intake air fluctuations by storing a certain amount of airflow.

[0091] In this embodiment, the first channel 522 has a circular cross-section, while the second channel 523 has a square cross-section. The pressure buffer 52 is made of fluororubber. The housing 521 through which the first and second channels 522 and 523 pass has a certain wall thickness to prevent incomplete sealing.

[0092] In this embodiment, see Figure 7 and Figure 8 The bottom of the sensor bottom shell 1 is also provided with an air flow smoothing groove 11 , and the intake pressure detection hole 53 is provided in the air flow smoothing groove 11 .

[0093] In this embodiment, the air flow smoothing groove 11 is a "concave"-shaped structure, and the intake pressure detection hole 111 is located at one end of the "concave" shape.

[0094] In this embodiment, see Figure 1 , the position detection component 4 includes:

[0095] A magnet 41 disposed at the top of the sensor shaft 7;

[0096] A position chip 42 is located above the magnet 41 and can sense the change of different magnetic poles of the magnet 41 and change the output voltage. The position chip 42 is connected to the circuit board 3.

[0097] In this embodiment, the top end of the sensor shaft 7 is provided with a first groove 71 for accommodating the magnet 41;

[0098] A magnet packaging sleeve 72 is provided above the magnet 41 and is connected to the first groove 71 and is used to wrap and seal the magnet 41;

[0099] The upper surface of the magnet packaging sleeve 71 is provided with a second groove 721 for accommodating the position chip 42 .

[0100] In this embodiment, the magnet 41 is engaged with the first groove 71 by interference fit.

[0101] In this embodiment, there is a certain distance between the position chip 42 and the second groove 721 , so that the sensor shaft 7 can drive the magnet 41 to rotate smoothly.

[0102] In this embodiment, the sensor shaft 7 can rotate around the valve body door axis by 0-220 degrees, and the sensor bottom shell 1 cannot rotate.

[0103] In this embodiment, see Figure 9 The position chip 42 is a dual-channel chip, which realizes dual redundancy design. When working, only one channel is in an active state, and the other channel is used as a backup channel, which can switch channels when communication errors occur.

[0104] In this embodiment, the two channels of a dual-channel chip have one voltage of 3V and the other of 2V, adding up to 5V. The resistance of the two channels changes in opposite directions, meaning the sum of the changes in resistance is zero. Applying the same voltage to both channels results in oppositely changing voltage signals, and their sum always equals the supply voltage.

[0105] In this embodiment, the sensor bottom shell 1 has space inside for accommodating the circuit board 3, the position detection component 4, the pressure detection component 5, and the intake air temperature probe 6, and a hole is provided at the bottom for the sensor shaft 7 to pass through.

[0106] In this embodiment, see Figure 7 and Figure 8 The bottom of the sensor bottom shell 1 is provided with a hollow tube 12 for accommodating the intake air temperature probe 6.

[0107] In this embodiment, the hollow tube 12 and the sensor bottom shell 1 are integrally formed by injection molding.

[0108] In this embodiment, the intake air temperature probe 6 is a thermistor, the pins of the thermistor are welded on the circuit board 3, and the thermistor is installed in the hollow tube 12 to detect the intake air temperature and output a signal to the ECU through the pins of the circuit board 3.

[0109] In this embodiment, see Figure 10 A shaft metal sheet 73 for connecting to the valve body door shaft is installed below the sensor shaft 7.

[0110] In this embodiment, see Figure 10 The rotating shaft metal sheet 73 includes a first metal sheet 731, a second metal sheet 732, a third metal sheet 733 and a fourth metal sheet 734 connected end to end. The first metal sheet 731, the second metal sheet 732 and the third metal sheet are in a U-shaped structure, the third metal sheet 733 and the fourth metal sheet 734 are in a V-shaped structure, and the fourth metal sheet 734 is located in the U-shaped structure formed by the first metal sheet 731, the second metal sheet 732 and the third metal sheet 733.

[0111] In this embodiment, the sensor shaft 7 is a plastic part, and the first metal sheet 731 and the fourth metal sheet 734 clamp the valve body shaft to protect the sensor shaft 7 and reduce the friction between the sensor shaft 7 and the valve body shaft.

[0112] In this embodiment, see Figure 10 The first metal sheet 731 is provided with a protrusion 7311, and the sensor shaft 7 is provided with a third groove 74 adapted to the protrusion 7311. The shaft metal sheet 73 and the sensor shaft 7 are connected through the protrusion 7311 and the third groove 74.

[0113] In this embodiment, a power chip 8 is provided on the circuit board 3 for supplying power to the three-in-one sensor and adding low voltage difference linear regulator protection.

[0114] In this embodiment, see Figure 11The circuit board 3 is provided with a plurality of through holes 31 , and fixing bolts 32 pass through the through holes 31 to connect the circuit board 3 with the sensor bottom shell 1 .

[0115] In this embodiment, see Figure 11 The circuit board 3 is provided with a plurality of glue holes 33 for glue filling. After the three-in-one sensor is assembled, the internal glue is filled to increase the multiple functions of the three-in-one sensor such as waterproof and moisture-proof, dust-proof and pollution-proof, temperature stability protection, mechanical protection and chemical protection.

[0116] In this embodiment, the sensor upper shell 2 and the sensor lower shell 1 are obtained by ultrasonic welding.

[0117] In this embodiment, a bushing 34 is provided on the sensor bottom shell 1 for improving the fastness and wear resistance of the three-in-one sensor after assembly.

[0118] In this embodiment, the bushing 34 is a metal part, which is inserted when the sensor bottom shell 1 is molded.

[0119] In this embodiment, a special-shaped sealing ring 13 is provided at the bottom of the sensor bottom shell 1 for ensuring the overall sealing of the three-in-one sensor after assembly.

[0120] In this embodiment, the working principle of the three-in-one sensor is:

[0121] The shaft metal sheet 73 is connected to the sensor shaft 7 through the protrusion on the first metal sheet 731 and the third groove 74 on the sensor shaft 7, and the first metal sheet 731 and the fourth metal sheet 734 of the shaft metal sheet 73 are clamped to the valve body door shaft, so that the three-in-one sensor is mounted on the valve body door shaft.

[0122] The circuit board 3 is connected to a position detection component 4, a pressure detection component 5, and an intake air temperature probe 6. The intake air temperature probe 6 detects the intake air temperature of the valve body. When the sensed temperature increases or decreases, the resistance in its circuit changes, and the resistance signal is transmitted to the ECU, thereby reflecting the temperature information inside the valve body.

[0123] The magnet 41 is positioned in a first groove 71 at the top of the sensor shaft 7 and is encapsulated and sealed by a magnet encapsulation sleeve 72. The magnet 41 generates a constant magnetic field, which serves as the magnetic field signal for the position chip 42. The position chip 42 detects this magnetic field and converts it into an electrical signal, which is then transmitted to the ECU. As the valve shaft rotates, the strength of the magnetic field generated by the magnet 41 changes, and the resistance of the position chip 42 also changes linearly. This generates a corresponding voltage signal, which is input to the ECU, reflecting the rotation angle of the valve shaft.

[0124] Gas from the valve body enters through the intake pressure detection hole 53, passes through the pressure buffer 52, and enters the pressure chip 51. The pressure chip 51 detects the gas pressure within the valve body. As the pressure changes, the resistance of the pressure chip 51 also changes. The resulting resistance signal is input into the ECU, reflecting the pressure within the valve body. The gas is first buffered in the airflow smoothing groove 11 before passing through the pressure buffer 52 and through the second channel 523. This channel stores a certain amount of airflow, mitigating intake fluctuations. This buffers the backlash of air flowing directly from the intake pressure detection hole 53 to the pressure chip 51, preventing excessive pressure errors on the pressure chip 51.

[0125] The three-in-one sensor provided by the utility model is installed on a valve body, which is then assembled on a motorcycle. When the motorcycle engine is running, the engine ECU uses the pressure and temperature information provided by the three-in-one sensor to correct the fuel injection quantity and ignition timing angle. The engine ECU then analyzes the driver's intention based on the throttle grip rotation angle, combined with the current operating mode, throttle movement, and rate of change, to calculate the basic engine torque demand and the corresponding basic expected value of the valve body's rotation angle. The optimal valve body opening is then determined, and a corresponding voltage signal is sent to the drive circuit module, driving the motor to adjust the valve body to the optimal opening position. The three-in-one sensor then feeds the valve body opening signal back to the valve control unit, forming a closed loop for precise control.

[0126] The above description of the embodiments is intended to facilitate understanding and use of the utility model by those skilled in the art. Those skilled in the art will readily be able to make various modifications to these embodiments and apply the general principles described herein to other embodiments without requiring inventive effort. Therefore, the utility model is not limited to the above-described embodiments. Improvements and modifications made by those skilled in the art based on the disclosure of this utility model without departing from the scope of this utility model should be within the scope of protection of this utility model.

Claims

1. A three-in-one sensor, characterized in that: include: A sensor shaft (7) connected to the valve body door shaft and rotatable; A sensor bottom shell (1) sleeved outside the sensor rotating shaft (7); A position detection component (4) located in the sensor bottom shell (1) and used to detect the rotation angle of the valve body door shaft; A pressure detection assembly (5) located in the sensor bottom shell (1) and used to detect the intake pressure in the valve body shaft, comprising an intake pressure detection hole (53) connected to the valve body and used for gas to enter, a pressure chip (51) that obtains different piezoresistive signals based on the gas pressure, and a pressure buffer (52) having two ends respectively connected to the intake pressure detection hole (53) and the pressure chip (51) and used to buffer the gas flowing toward the pressure chip (51); An intake air temperature probe (6) located in the sensor bottom shell (1) and used to detect the temperature inside the valve body door shaft; Connected to the position detection component (4), the pressure chip (51) of the pressure detection component (5), and the intake air temperature probe (6), and transmits the obtained signals to a circuit board (3) of an external engine ECU, wherein the circuit board (3) is located inside the sensor bottom shell (1) and above the sensor shaft (7); and a sensor upper shell (2) located above the circuit board (3) and adapted to the sensor bottom shell (1).

2. A three-in-one sensor according to claim 1, characterized in that: The pressure buffer (52) comprises: Housing (521); A first hole (522) having two ends passing through the housing (521) and connecting the intake pressure detection hole (53) and the pressure chip (51); and second channels (523) located at both ends of the first channel (522) and having a diameter greater than that of the first channel (522).

3. The three-in-one sensor according to claim 2, characterized in that: The cross section of the first hole (522) is circular, and the cross section of the second hole (523) is square.

4. The three-in-one sensor according to claim 1, characterized in that: The bottom of the sensor bottom shell (1) is also provided with an air flow smoothing groove (11), and the intake pressure detection hole (53) is provided in the air flow smoothing groove (11).

5. The three-in-one sensor according to claim 1, characterized in that: The position detection component (4) comprises: a magnet (41) disposed on the top end of the sensor shaft (7); and a position chip (42) located above the magnet (41) and capable of sensing changes in different magnetic poles of the magnet (41) to change the magnitude of the output voltage; the position chip (42) is connected to the circuit board (3).

6. The three-in-one sensor according to claim 5, characterized in that: The top end of the sensor shaft (7) is provided with a first groove (71) for accommodating the magnet (41); A magnet packaging sleeve (72) is provided above the magnet (41), connected to the first groove (71) and used to wrap and seal the magnet (41); The upper surface of the magnet packaging sleeve (72) is provided with a second groove (721) for placing the position chip (42).

7. The three-in-one sensor according to claim 5, characterized in that: The position chip (42) is a dual-channel chip.

8. The three-in-one sensor according to claim 1, characterized in that: The bottom of the sensor bottom shell (1) is provided with a hollow tube (12) for accommodating the intake air temperature probe (6).

9. The three-in-one sensor according to claim 1, characterized in that: A rotating shaft metal sheet (73) for connecting with the valve body door shaft is installed below the sensor rotating shaft (7).

10. The three-in-one sensor according to claim 9, characterized in that: The rotating shaft metal sheet (73) comprises a first metal sheet (731), a second metal sheet (732), a third metal sheet (733) and a fourth metal sheet (734) connected end to end, wherein the first metal sheet (731), the second metal sheet (732) and the third metal sheet are in a U-shaped structure, the third metal sheet (733) and the fourth metal sheet (734) are in a V-shaped structure, and the fourth metal sheet (734) is located within the U-shaped structure formed by the first metal sheet (731), the second metal sheet (732) and the third metal sheet (733).

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