Electronic throttle valve controller with inductive position detection function
Through the cooperation of inductive sensor chip and metal moving blade, the problem of weak anti-interference ability of Hall sensor is solved, and the effect of signal stability and cost reduction is achieved.
Patent Information
- Application Number
- CN202423033547.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-09
- Publication Date
- 2025-07-18
- Estimated Expiration
- 2034-12-09
AI Technical Summary
In existing electronic throttle controllers, Hall sensors have weak anti-interference ability and are easily disturbed by stray magnetic fields in the vehicle system, affecting signal stability and increasing costs.
The inductive sensor chip is used to cooperate with the transmission coil and the receiving coil, and the eddy current effect is used to detect the rotation angle of the valve plate, avoiding the use of extra magnetic steel.
Enhanced anti-interference ability, ensure signal stability, and reduce costs.
Smart Images
Figure CN223120035U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of throttle valves, and particularly relates to an electronic throttle controller for inductive position detection. Background Art
[0002] In the reaction of engine exhaust aftertreatment, the role of the throttle valve is becoming more and more important. By precisely controlling the throttle opening, the fuel economy can be effectively improved and the exhaust emissions can be reduced.
[0003] At present, a Hall sensor chip is commonly used inside the electronic throttle, and the angle of the electronic throttle valve plate is detected by the principle of the Hall effect. However, the Hall-type sensor chip has poor anti-interference ability and is easily interfered by the stray magnetic field in the vehicle system, which may affect the stability of the signal output. Moreover, the Hall sensor needs to be used in combination with a magnetic steel additionally, which will increase a certain cost. Summary of the Invention
[0004] The technical problem to be solved by the utility model is to provide an electronic throttle controller for inductive position detection, which can overcome the interference of the stray magnetic field in the vehicle system and ensure the stability of the output signal.
[0005] To solve the above technical problem, the following technical solutions are adopted by the utility model.
[0006] An electronic throttle controller for inductive position detection includes a PCB board arranged inside the controller and a metal moving piece arranged on the central axis of the valve plate of the electronic throttle and used in cooperation with the PCB board; an inductive sensor chip, a transmitting coil, a receiving coil, an input interface and an output interface are arranged on the PCB board; the input interface is connected to an external power supply and supplies power to the inductive sensor chip; the receiving coil is connected to the input end of the inductive sensor chip, the output end of the inductive sensor chip is connected to the output interface, and the output interface is connected to a signal receiving device; the metal moving piece is correspondingly arranged with the transmitting coil and the receiving coil on the PCB board respectively.
[0007] In the above electronic throttle controller for inductive position detection, the metal moving piece is arranged at an interval between the transmitting coil and the receiving coil.
[0008] In the above electronic throttle controller for inductive position detection, the gap between the metal moving piece and the transmitting coil and the receiving coil is 3 - 5 mm.
[0009] Due to the adoption of the above technical solutions, the following technical progress is achieved by the utility model.
[0010] The utility model provides an electronic throttle controller for inductive position detection. By selecting an inductive sensor chip to replace the Hall chip, the eddy current effect is generated to detect the rotation angle of the electronic throttle valve plate, effectively overcoming the interference of stray magnetic fields in the vehicle system, ensuring the stability of the output signal, enhancing the anti-interference ability, and not requiring the use of an additional magnetic steel for cooperation. Through the cooperation of the metal moving piece and the PCB board, the cost is greatly reduced. BRIEF DESCRIPTION OF THE DRAWINGS
[0011] Figure 1 is a schematic diagram of the internal structure of the present utility model;
[0012] Figure 2 is a wiring connection diagram of the present utility model.
[0013] Wherein: 1. Metal moving piece, 2. Transmitting coil, 3. Receiving coil, 4. Inductive sensor chip, 5. Input interface, 6. Output interface. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0014] The present utility model will be further described in detail below in conjunction with the drawings and specific embodiments.
[0015] An electronic throttle controller for inductive position detection, as Figures 1 to 2 shown, includes a PCB board arranged inside the controller. The PCB board is provided with an inductive sensor chip 4, a transmitting coil 2, a receiving coil 3, an input interface 5, and an output interface 6. A metal moving piece 1 for cooperating with the PCB board is arranged on the central axis of the valve plate of the electronic throttle.
[0016] The metal moving piece 1 is respectively arranged corresponding to the transmitting coil 2 and the receiving coil 3 on the PCB board, and there is a spaced arrangement between the metal moving piece 1 and the transmitting coil 2 and the receiving coil 3, and the gap between the metal moving piece 1 and the transmitting coil 2 and the receiving coil 3 is 3 - 5 mm.
[0017] The central axis of the valve plate is connected to the motor shaft through a gear transmission structure. Controlling the rotation of the motor can drive the valve plate and the metal moving piece 1 to rotate. When the metal moving piece 1 rotates in the alternating magnetic field of the transmitting coil 2, an induced current will be generated on the surface of the metal moving piece 1 and the magnetic field will be reflected back to the receiving coil 3.
[0018] The input interface 5 is connected to an external power supply for supplying power to the inductive sensor chip 4 to excite the magnetic field of the transmitting coil 2.
[0019] The receiving coil 3 is connected to the input end of the inductive sensor chip 4, and the output end of the inductive sensor chip 4 is connected to the output interface 6.
[0020] The output interface 6 is connected to the signal receiving device. The output interface 6 can output the voltage converted by the inductive sensor chip 4 to the signal receiving device, facilitating the calculation of the rotation angle of the electronic throttle valve plate.
[0021] The working principle of the present utility model is as follows:
[0022] Since the input interface 5 supplies power to the inductive sensor chip 4 after connecting to the positive and negative poles of the external power supply, after the inductive sensor chip 4 is powered on, it will automatically activate the transmitting coil 2 to generate an alternating magnetic field. At this time, the electronic throttle valve plate is rotated by the motor. The metal moving plate 1 is arranged close to the transmitting coil 2, and the metal moving plate 1 rotates in the magnetic field generated by the transmitting coil 2 together with the valve plate.
[0023] As the magnetic field continuously changes, an induced current will be generated on the surface of the metal moving plate 1, and the magnetic field will be reflected back to the receiving coil 3. After the receiving coil 3 receives the reflected magnetic field, it will generate a set of AC signals and input the generated AC signals to the inductive sensor chip 4. The inductive sensor chip 4 converts the received input signal into a voltage output signal and outputs it to the signal receiving device through the output interface 6. The signal receiving device can accurately calculate the rotation angle of the electronic throttle valve plate based on this output signal.
[0024] The present utility model provides an electronic throttle controller for inductive position detection. By using an inductive sensor chip instead of a Hall chip to detect the rotation angle of the electronic throttle valve plate through the eddy current effect, it effectively overcomes the interference of stray magnetic fields in the vehicle system, ensures the stability of the output signal, enhances the anti-interference ability, and does not require the use of an additional magnetic steel for cooperation. Through the cooperation of the metal moving plate and the PCB board, the cost is greatly reduced.
Claims
1. An electronic throttle controller for inductive position detection, characterized in that: It includes a PCB board disposed inside the controller and a metal moving piece (1) disposed on the valve plate central axis of the electronic throttle and used in cooperation with the PCB board; an inductive sensor chip (4), a transmitting coil (2), a receiving coil (3), an input interface (5) and an output interface (6) are disposed on the PCB board; the input interface (5) is connected to an external power supply and supplies power to the inductive sensor chip (4); the receiving coil (3) is connected to the input end of the inductive sensor chip (4), the output end of the inductive sensor chip (4) is connected to the output interface (6), and the output interface (6) is connected to a signal receiving device; the metal moving piece (1) is correspondingly disposed with the transmitting coil (2) and the receiving coil (3) on the PCB board respectively.
2. An electronic throttle controller for inductive position detection according to claim 1, characterized in that: The metal moving piece (1) is spaced from the transmitting coil (2) and the receiving coil (3).
3. An electronic throttle controller for inductive position detection according to claim 2, characterized in that: The gap between the metal moving piece (1) and the transmitting coil (2) and the receiving coil (3) is 3 to 5 mm.