An active suspension electro-hydraulic pump assembly with temperature and pressure signal switching function

Abstract

This invention provides an active suspension electro-hydraulic pump assembly with a temperature and pressure signal conversion function. The temperature and pressure signal conversion board includes a temperature and pressure sensor interface, a signal processing circuit, and a connector. The temperature and pressure sensor interface is electrically connected to the input terminal of the signal processing circuit, and the output terminal of the signal processing circuit is electrically connected to the connector. The temperature and pressure signal conversion board is configured such that the temperature and pressure sensor interface is coupled to the output pin of a temperature and pressure sensor that measures the temperature and pressure parameters of the hydraulic medium. The signal processing circuit performs anti-electromagnetic interference and filtering processing on the raw temperature and pressure signal output by the temperature and pressure sensor. The connector outputs the processed temperature and pressure signal to an external controller. This invention reduces the use of various sensor wiring harnesses and connectors in the active suspension electro-hydraulic pump assembly, lowers assembly difficulty, and improves signal quality.

Description

Technical Field

[0001] This utility model belongs to the field of signal transmission technology, and in particular relates to an active suspension electro-hydraulic pump assembly with temperature and pressure signal conversion function. Background Technology

[0002] In traditional active suspension systems, the electro-hydraulic pump is a key component, and the acquisition of the temperature and pressure of its hydraulic medium (usually hydraulic oil) is crucial for the normal operation and safety of the system. The conventional method for acquiring the temperature and pressure parameters of the hydraulic medium involves each temperature and pressure sensor being directly connected to the controller's main control board via a separate wiring harness and connector. To facilitate plugging and unplugging, the wiring harnesses are usually left with a certain length. Multiple temperature and pressure sensors require multiple wiring harnesses and connectors, inevitably making assembly installation cumbersome, resulting in messy wiring harnesses. Furthermore, electromagnetic interference between multiple wiring harnesses can easily occur, affecting the signal quality obtained from the temperature and pressure sensors. Utility Model Content

[0003] This utility model provides an active suspension electro-hydraulic pump assembly with temperature and pressure signal conversion function to solve the technical problems of complex and messy signal transmission harnesses and poor temperature and pressure signal quality in conventional hydraulic medium temperature and pressure acquisition methods under the prior art.

[0004] To solve the above problems, the technical solution of this utility model is: an active suspension electro-hydraulic pump assembly with temperature and pressure signal conversion function, comprising:

[0005] An electro-hydraulic pump assembly, comprising a hydraulic pump and an electric motor for driving the hydraulic pump, wherein the hydraulic pump contains a hydraulic medium;

[0006] It also includes a temperature and pressure signal adapter board;

[0007] The temperature and pressure signal adapter board is provided with a temperature and pressure sensor interface, a signal processing circuit and a plug-in part. The temperature and pressure sensor interface is electrically connected to the input terminal of the signal processing circuit, and the output terminal of the signal processing circuit is electrically connected to the plug-in part.

[0008] The temperature and pressure signal adapter board is configured such that the temperature and pressure sensor interface is used to couple and connect with the output pin of the temperature and pressure sensor that measures the temperature and pressure parameters of the hydraulic medium, the signal processing circuit is used to perform anti-electromagnetic interference and filtering processing on the raw temperature and pressure signal output by the temperature and pressure sensor, and the plug-in part is used to output the processed temperature and pressure signal to an external controller.

[0009] Preferably, the temperature and pressure signal adapter board is provided with a plurality of temperature and pressure sensor interfaces, and the plurality of temperature and pressure sensor interfaces are electrically connected to the input terminal of the signal processing circuit respectively.

[0010] Preferably, the temperature and pressure sensor interface adopts a blind hole structure, and the metal layer of the hole wall of the temperature and pressure sensor interface is electrically connected to the input terminal of the signal processing circuit.

[0011] Preferably, the temperature and pressure sensor interface and the output pin of the temperature and pressure sensor are fixedly connected by interference fit or soldering.

[0012] Preferably, the temperature and pressure signal adapter board is provided with a plurality of fixing holes, the fixing holes adopt a through hole structure, and the fixing holes are used to insert fixing members to fix the temperature and pressure signal adapter board to the preset position of the electro-hydraulic pump group.

[0013] Preferably, the wall of the fixing hole is provided with a metal layer, the fixing member is made of metal material, and the metal layer of the wall of the fixing hole is electrically connected to the signal processing circuit and the grounding terminal.

[0014] Preferably, the connector communicates with the external controller via a single shielded cable.

[0015] Preferably, the signal processing circuit includes:

[0016] The input terminal of the signal processing circuit is electrically connected to the first terminal of the first common-mode inductor, and a first common junction is formed between the input terminal of the signal processing circuit and the first common-mode inductor; a first terminal of a first TVS diode is connected to the first common junction, and a second terminal of the first TVS diode is grounded; a first terminal of a first capacitor is connected to the first common junction, and a second terminal of the first capacitor is grounded.

[0017] The output terminal of the signal processing circuit is electrically connected to the second terminal of the first common-mode inductor, and a second common junction is formed between the output terminal of the signal processing circuit and the first common-mode inductor; the first terminal of the second capacitor is connected to the second common junction, and the second terminal of the second capacitor is grounded.

[0018] Preferably, the signal processing circuit includes:

[0019] The input terminal of the signal processing circuit is electrically connected to the first port of the second common-mode inductor, and a third common junction is formed between the input terminal of the signal processing circuit and the second common-mode inductor; the first terminal of the second TVS diode, the first terminal of the third capacitor, and the first terminal of the fourth capacitor are connected to the third common junction, and the first terminal of the fifth capacitor is connected to the second terminal of the fourth capacitor, and the common junction of the fourth capacitor and the fifth capacitor is grounded;

[0020] The output terminal of the signal processing circuit is electrically connected to the second port of the second common-mode inductor, and a fourth common junction is formed between the output terminal of the signal processing circuit and the second common-mode inductor; the first terminal of the sixth capacitor and the first terminal of the seventh capacitor are connected to the fourth common junction, the first terminal of the eighth capacitor is connected to the second terminal of the sixth capacitor, and the common junction of the sixth capacitor and the eighth capacitor is grounded;

[0021] The third and fourth ports of the second common-mode inductor, the second terminal of the second TVS diode, the second terminal of the third capacitor, the second terminal of the fifth capacitor, the second terminal of the seventh capacitor, and the second terminal of the eighth capacitor are grounded.

[0022] Based on the same concept, this utility model also provides an active suspension electro-hydraulic pump assembly with temperature and pressure signal conversion function, comprising:

[0023] An electro-hydraulic pump assembly, comprising two hydraulic pumps and two electric motors for driving the corresponding hydraulic pumps, wherein the hydraulic pumps contain a hydraulic medium;

[0024] It also includes a temperature and pressure signal adapter board;

[0025] The temperature and pressure signal adapter board is provided with a temperature and pressure sensor interface, a signal processing circuit and a plug-in part. The temperature and pressure sensor interface is electrically connected to the input terminal of the signal processing circuit, and the output terminal of the signal processing circuit is electrically connected to the plug-in part.

[0026] The temperature and pressure signal adapter board is configured such that the temperature and pressure sensor interface is used to couple and connect with the output pin of the temperature and pressure sensor that measures the temperature and pressure parameters of the hydraulic medium, the signal processing circuit is used to perform anti-electromagnetic interference and filtering processing on the raw temperature and pressure signal output by the temperature and pressure sensor, and the plug-in part is used to output the processed temperature and pressure signal to an external controller.

[0027] Because of the adoption of the above technical solution, this utility model has the following advantages and positive effects compared with the prior art:

[0028] This invention provides an active suspension electro-hydraulic pump assembly with temperature and pressure signal conversion function. It includes a temperature and pressure signal conversion board, which houses a temperature and pressure sensor interface, a signal processing circuit, and a connector. The temperature and pressure sensor interface is connected to the output pins of a temperature and pressure sensor. The signal processing circuit performs electromagnetic interference suppression and filtering on the raw temperature and pressure signal output by the sensor. The connector communicates with an external controller via a single shielded cable. This invention utilizes the temperature and pressure signal conversion board to uniformly collect, process, and output temperature and pressure signals to an external controller, reducing the number of sensor harnesses and connectors used in the active suspension electro-hydraulic pump assembly, simplifying assembly, and improving signal quality. Attached Figure Description

[0029] Figure 1 A schematic diagram of the temperature and pressure signal adapter board provided by this utility model;

[0030] Figure 2 A first structural schematic diagram of the signal processing circuit provided by this utility model;

[0031] Figure 3 The present invention provides a second structural schematic diagram of the signal processing circuit.

[0032] Explanation of reference numerals in the attached diagram: 1: Temperature and pressure sensor interface; 2: Signal processing circuit; 3: Plug-in part; 4: Fixing hole. Detailed Implementation

[0033] The present invention provides a detailed description of an active suspension electro-hydraulic pump assembly with temperature and pressure signal switching function, in conjunction with the accompanying drawings and specific embodiments. The advantages and features of the present invention will become clearer from the following description and claims.

[0034] First Embodiment

[0035] Active suspension specifically comprises sensors, controllers, and actuators. Sensors detect the vehicle's state, such as vehicle acceleration, suspension displacement, and wheel speed. The controller processes this data and uses algorithms to calculate the required force or adjustment parameters. Finally, actuators (such as hydraulic or electromagnetic actuators) actually adjust the suspension. The key advantage of active suspension lies in its real-time adjustment, reacting to road surface changes within milliseconds to maintain vehicle stability. For example, when a wheel encounters a bump, the suspension can quickly contract to reduce the impact transmitted to the vehicle body; during cornering, active suspension can adjust stiffness to reduce body roll and improve handling.

[0036] In terms of actuators, active suspension typically uses hydraulic or electromagnetic systems. Hydraulic actuators offer fast response and high force, but are complex in structure and consume a lot of energy. Electromagnetic actuators, such as linear motors, may be more efficient, but their force output may not be as high as that of hydraulic systems.

[0037] The electro-hydraulic pump unit specifically includes a damper with a double-acting hydraulic cylinder and piston, a hydraulic pump head, an electric motor for driving the corresponding hydraulic pump, and a hydraulic unit with a hydraulic oil tank and valves. The hydraulic pump contains hydraulic medium. Its working principle is that the electric motor drives the hydraulic pump to rotate forward or backward, driving hydraulic oil into the double-acting hydraulic cylinder, which then outputs damping to control the corresponding wheel suspension system.

[0038] In active suspension systems, the electro-hydraulic pump is a key component, and the acquisition of the temperature and pressure of its hydraulic medium (usually hydraulic oil) is crucial for the normal operation and safety of the system. Traditional active suspension electro-hydraulic pump temperature and pressure acquisition methods involve each sensor being directly connected to the controller's main board via a separate wiring harness and connector. To facilitate plugging and unplugging, the wiring harnesses are typically pre-lengthened. Multiple temperature and pressure sensors require multiple wiring harnesses and connectors, inevitably leading to cumbersome assembly, messy wiring, and affecting the signal quality obtained from the temperature and pressure sensors.

[0039] Based on this, see Figures 1-3 This embodiment provides an active suspension electro-hydraulic pump assembly with temperature and pressure signal conversion function, which is used to realize convenient acquisition, processing and unified transmission of temperature and pressure signals, wherein a temperature and pressure signal conversion board is provided.

[0040] The temperature and pressure signal adapter board has a PCB board structure. The temperature and pressure signal adapter board has a temperature and pressure sensor interface 1, a signal processing circuit 2 and a plug-in part 3. The temperature and pressure sensor interface 1 is electrically connected to the input terminal of the signal processing circuit 2, and the output terminal of the signal processing circuit 2 is electrically connected to the plug-in part 3.

[0041] The temperature and pressure signal adapter board is configured such that the temperature and pressure sensor interface 1 is used to couple and connect with the output pin of the temperature and pressure sensor that measures the temperature and pressure parameters of the hydraulic medium, the signal processing circuit 2 is used to perform anti-electromagnetic interference and filtering processing on the raw temperature and pressure signal output by the temperature and pressure sensor, and the plug-in part 3 is used to output the processed temperature and pressure signal to an external controller.

[0042] In this embodiment, the temperature and pressure sensor is no longer directly connected to the external controller through a separate wiring harness and connector. Instead, the temperature and pressure signal is uniformly converted by the temperature and pressure signal conversion board, which effectively reduces the messy and complicated arrangement of wiring harnesses and connectors. Furthermore, based on the signal processing circuit 2, the temperature and pressure signal is subjected to anti-electromagnetic interference and filtering processing, which can effectively improve the quality of the temperature and pressure signal.

[0043] The following will provide a more detailed description of the specific structure and function of the active suspension electro-hydraulic pump assembly with temperature and pressure signal conversion function provided in this embodiment:

[0044] Preferably, in one embodiment, the temperature and pressure signal adapter board is provided with a plurality of temperature and pressure sensor interfaces 1, which are electrically connected to the input terminal of the signal processing circuit 2 respectively. Each set of temperature and pressure sensor interfaces 1 can correspond to a set of temperature and pressure sensors, that is, multiple sets of temperature and pressure sensors can be connected to a single temperature and pressure signal adapter board at the same time. In this embodiment, multiple sets of temperature and pressure sensors can be used to measure the temperature and pressure parameters of the hydraulic medium at different positions in the same hydraulic pump, or to achieve redundant measurement of the hydraulic medium in the same hydraulic pump, thereby improving the accuracy of temperature and pressure parameter measurement.

[0045] Preferably, in one embodiment, the temperature and pressure sensor interface 1 adopts a blind hole structure. The blind hole structure refers to connecting the surface layer of the PCB board and one or more internal layers, but does not penetrate the entire PCB board. The metal layer of the hole wall of the temperature and pressure sensor interface 1 is electrically connected to the input terminal of the signal processing circuit 2.

[0046] Furthermore, in one embodiment, the temperature and pressure sensor interface 1 and the output pin of the temperature and pressure sensor are fixedly connected by interference fit or soldering. In this embodiment, if the output pin of the temperature and pressure sensor is a spring pin, during the assembly of the temperature and pressure sensor and the temperature and pressure signal adapter board, the blind hole structure of the temperature and pressure sensor interface 1 can be used to conveniently and accurately realize the alignment and insertion fixation between the output pin of the temperature and pressure sensor and the temperature and pressure sensor interface 1, ensuring the reliability of the connection.

[0047] Preferably, in one embodiment, the temperature and pressure signal adapter board is provided with a plurality of fixing holes 4. The fixing holes 4 adopt a through hole structure, which means that it penetrates from one side of the PCB board to the other side, forming a through hole on the PCB board. The fixing holes 4 are used to install fixing components to fix the temperature and pressure signal adapter board to a preset position in the electro-hydraulic pump group, so that the temperature and pressure signal adapter board can achieve position fixation in the electro-hydraulic pump group. The fixing components include screws, bolts, etc.

[0048] Furthermore, in one embodiment, the wall of the fixing hole 4 is provided with a metal layer, the fixing member is made of metal material, and the metal layer of the wall of the fixing hole 4 is electrically connected to the signal processing circuit 2 and the grounding terminal. In this embodiment, the preset position of the electro-hydraulic pump group includes the active suspension hydraulic pump assembly housing. When the active suspension hydraulic pump assembly housing is used as the grounding terminal, the metal wall of the fixing hole 4 is connected to the grounding terminal, which serves as the electromagnetic shielding and grounding function of the signal processing circuit 2, thereby improving the anti-EMC interference capability of the temperature and pressure signal adapter board and improving the quality of the sensor signal.

[0049] Preferably, in one embodiment, the plug-in part 3 communicates with the external controller through a single shielded cable. The plug-in part 3 is provided with multiple interfaces, and the single shielded cable may include multiple sets of wire cores. Different wire cores correspond one-to-one with different interfaces in the plug-in part 3 and are used to transmit temperature and pressure signals from different temperature and pressure sensors, thereby reducing the number of conventional wire harnesses used.

[0050] Preferably, in one embodiment, the signal processing circuit 2 includes:

[0051] The input terminal of the signal processing circuit 2 is electrically connected to the first terminal of the first common-mode inductor L1, and a first common junction is formed between the input terminal of the signal processing circuit 2 and the first common-mode inductor L1; the first terminal of the first TVS diode D1 is connected to the first common junction, and the second terminal of the first TVS diode D1 is grounded; the first terminal of the first capacitor C1 is connected to the first common junction, and the second terminal of the first capacitor C1 is grounded.

[0052] The output terminal of the signal processing circuit 2 is electrically connected to the second terminal of the first common-mode inductor L1, and a second common junction is formed between the output terminal of the signal processing circuit 2 and the first common-mode inductor L1; the first terminal of the second capacitor C2 is connected to the second common junction, and the second terminal of the second capacitor C2 is grounded.

[0053] In this embodiment, the first TVS diode D1 is used to suppress transient voltage. When the input voltage exceeds a certain threshold, the first TVS diode D1 will quickly conduct, clamping the excessive voltage within a safe range, thereby protecting the subsequent circuits from damage caused by transient voltage spikes. The first capacitor C1 at the input terminal and the second capacitor C2 at the output terminal are used to filter out high-frequency noise and differential-mode interference twice. They can bypass high-frequency signals and allow these high-frequency signals to flow directly to the ground terminal, effectively reducing electromagnetic radiation and improving the electromagnetic compatibility (EMC) performance of the signal processing circuit 2. The first common-mode inductor L1 is used to suppress common-mode noise. That is, when current flows through the first common-mode inductor L1, if the current is differential-mode (i.e., the current direction is opposite), the first common-mode inductor L1 has little effect on the current. However, if the current is common-mode (i.e., the current direction is the same), the first common-mode inductor L1 will generate a large impedance, thereby suppressing common-mode noise, reducing common-mode interference, and ensuring signal purity.

[0054] Preferably, in one embodiment, the signal processing circuit 2 includes:

[0055] The input terminal of the signal processing circuit 2 is electrically connected to the first port of the second common-mode inductor L2, and a third common junction is formed between the input terminal of the signal processing circuit 2 and the second common-mode inductor L2; the first terminal of the second TVS diode D2, the first terminal of the third capacitor C3 and the first terminal of the fourth capacitor C4 are connected to the third common junction, the first terminal of the fifth capacitor C5 is connected to the second terminal of the fourth capacitor C4, and the common junction of the fourth capacitor C4 and the fifth capacitor C5 is grounded.

[0056] The output terminal of the signal processing circuit 2 is electrically connected to the second port of the second common-mode inductor L2, and a fourth common junction is formed between the output terminal of the signal processing circuit 2 and the second common-mode inductor L2; the first terminal of the sixth capacitor C6 and the first terminal of the seventh capacitor C7 are connected to the fourth common junction, the first terminal of the eighth capacitor C8 is connected to the second terminal of the sixth capacitor C6, and the common junction of the sixth capacitor C6 and the eighth capacitor C8 is grounded.

[0057] The third and fourth terminals of the second common-mode inductor L2, the second terminal of the second TVS diode D2, the second terminal of the third capacitor C3, the second terminal of the fifth capacitor C5, the second terminal of the seventh capacitor C7, and the second terminal of the eighth capacitor C8 are grounded.

[0058] In this embodiment, the second common-mode inductor L2 includes two sets of windings, forming four ports. The second TVS diode D2 is used for transient voltage suppression. When the input voltage exceeds a certain threshold, the second TVS diode D2 quickly conducts, clamping the excessive voltage within a safe range, thereby protecting subsequent circuits from transient voltage spikes. The third capacitor C3 at the input terminal and the seventh capacitor C7 at the output terminal are used to filter high-frequency noise and differential-mode interference twice. They can bypass high-frequency signals, allowing these high-frequency signals to flow directly to the ground terminal, which helps reduce electromagnetic radiation and improve the electromagnetic compatibility (EMC) performance of the signal processing circuit 2. The fourth capacitor C4 and the fifth capacitor C5 at the input terminal are connected in series and grounded at a common junction, and the sixth capacitor C6 and the eighth capacitor C8 at the output terminal are connected in series and grounded at a common junction, used to achieve two-stage filtering of common-mode interference. The second common-mode inductor L2 is used to suppress common-mode noise. When current flows through the second common-mode inductor L2, if the current is differential (i.e., the current direction is opposite), the second common-mode inductor L2 has little effect on the current. However, if the current is common-mode (i.e., the current direction is the same), the second common-mode inductor L2 will generate a large impedance, thereby suppressing common-mode noise, reducing common-mode interference, and ensuring the purity of the signal.

[0059] Second Embodiment

[0060] This embodiment provides an active suspension electro-hydraulic pump assembly with temperature and pressure signal conversion function based on the first embodiment described above. The difference between this embodiment and the first embodiment is as follows:

[0061] An electro-hydraulic pump assembly includes two hydraulic pumps and two electric motors for driving the corresponding hydraulic pumps. The hydraulic pumps contain hydraulic fluid.

[0062] The specific structures of the temperature and pressure sensor interface 1, the signal processing circuit 2, and the plug-in part 3 are the same as those in the first embodiment, and will not be described again here.

[0063] Preferably, in one embodiment, both motors are housed in a common active suspension hydraulic pump assembly housing. The temperature and pressure signal adapter board is provided with several temperature and pressure sensor interfaces 1, which are electrically connected to the input terminals of the signal processing circuit 2. In this embodiment, several temperature and pressure sensors used for measuring the hydraulic medium parameters in the two hydraulic pumps can be connected to the same temperature and pressure signal adapter board, further reducing the number of various sensor harnesses and connectors used in the active suspension electro-hydraulic pump assembly.

[0064] In summary, this utility model provides an active suspension electro-hydraulic pump assembly with a temperature and pressure signal conversion function. It includes a temperature and pressure signal conversion board, which houses a temperature and pressure sensor interface 1, a signal processing circuit 2, and a connector 3. The temperature and pressure sensor interface 1 is connected to the output pin of the temperature and pressure sensor. The signal processing circuit 2 performs electromagnetic interference suppression and filtering on the raw temperature and pressure signal output by the temperature and pressure sensor. The connector 3 communicates with an external controller via a single shielded cable. In this utility model, by using the temperature and pressure signal conversion board to uniformly collect, process, and output temperature and pressure signals to an external controller, the number of various sensor harnesses and connectors used in the active suspension electro-hydraulic pump assembly can be reduced, assembly difficulty can be lowered, and signal quality can be improved.

[0065] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings, but the present invention is not limited to the above embodiments. Even if various changes are made to the present invention, if these changes fall within the scope of the claims of the present invention and their equivalents, they shall still fall within the protection scope of the present invention.

Claims

1. An active suspension electro-hydraulic pump assembly with temperature and pressure signal switching function, comprising: An electro-hydraulic pump assembly, comprising a hydraulic pump and an electric motor for driving the hydraulic pump, wherein the hydraulic pump contains a hydraulic medium; Its characteristic is that it also includes a temperature and pressure signal adapter board; The temperature and pressure signal adapter board is provided with a temperature and pressure sensor interface, a signal processing circuit and a plug-in part. The temperature and pressure sensor interface is electrically connected to the input terminal of the signal processing circuit, and the output terminal of the signal processing circuit is electrically connected to the plug-in part. The temperature and pressure signal adapter board is configured such that the temperature and pressure sensor interface is used to couple and connect with the output pin of the temperature and pressure sensor that measures the temperature and pressure parameters of the hydraulic medium, the signal processing circuit is used to perform anti-electromagnetic interference and filtering processing on the raw temperature and pressure signal output by the temperature and pressure sensor, and the plug-in part is used to output the processed temperature and pressure signal to an external controller.

2. The active suspension electro-hydraulic pump assembly with temperature and pressure signal conversion function as described in claim 1, characterized in that, The temperature and pressure signal adapter board is provided with a plurality of temperature and pressure sensor interfaces, and the plurality of temperature and pressure sensor interfaces are electrically connected to the input terminal of the signal processing circuit respectively.

3. The active suspension electro-hydraulic pump assembly with temperature and pressure signal conversion function as described in claim 1 or 2, characterized in that, The temperature and pressure sensor interface adopts a blind hole structure, and the metal layer of the hole wall of the temperature and pressure sensor interface is electrically connected to the input terminal of the signal processing circuit.

4. The active suspension electro-hydraulic pump assembly with temperature and pressure signal conversion function as described in claim 3, characterized in that, The temperature and pressure sensor interface and the output pin of the temperature and pressure sensor are fixedly connected by interference fit or soldering.

5. The active suspension electro-hydraulic pump assembly with temperature and pressure signal conversion function as described in claim 1, characterized in that, The temperature and pressure signal adapter board is provided with several fixing holes. The fixing holes adopt a through hole structure and are used to install fixing components to fix the temperature and pressure signal adapter board to the preset position of the electro-hydraulic pump group.

6. The active suspension electro-hydraulic pump assembly with temperature and pressure signal conversion function as described in claim 5, characterized in that, The wall of the fixing hole is provided with a metal layer, the fixing component is made of metal material, and the metal layer of the wall of the fixing hole is electrically connected to the signal processing circuit and the grounding terminal.

7. The active suspension electro-hydraulic pump assembly with temperature and pressure signal conversion function as described in claim 1, characterized in that, The connector communicates with the external controller via a single shielded cable.

8. The active suspension electro-hydraulic pump assembly with temperature and pressure signal conversion function as described in claim 1, characterized in that, The signal processing circuit includes: The input terminal of the signal processing circuit is electrically connected to the first terminal of the first common-mode inductor, and a first common junction is formed between the input terminal of the signal processing circuit and the first common-mode inductor; a first terminal of a first TVS diode is connected to the first common junction, and a second terminal of the first TVS diode is grounded; a first terminal of a first capacitor is connected to the first common junction, and a second terminal of the first capacitor is grounded. The output terminal of the signal processing circuit is electrically connected to the second terminal of the first common-mode inductor, and a second common junction is formed between the output terminal of the signal processing circuit and the first common-mode inductor; the first terminal of the second capacitor is connected to the second common junction, and the second terminal of the second capacitor is grounded.

9. The active suspension electro-hydraulic pump assembly with temperature and pressure signal conversion function as described in claim 1, characterized in that, The signal processing circuit includes: The input terminal of the signal processing circuit is electrically connected to the first port of the second common-mode inductor, and a third common junction is formed between the input terminal of the signal processing circuit and the second common-mode inductor; the first terminal of the second TVS diode, the first terminal of the third capacitor, and the first terminal of the fourth capacitor are connected to the third common junction, and the first terminal of the fifth capacitor is connected to the second terminal of the fourth capacitor, and the common junction of the fourth capacitor and the fifth capacitor is grounded; The output terminal of the signal processing circuit is electrically connected to the second port of the second common-mode inductor, and a fourth common junction is formed between the output terminal of the signal processing circuit and the second common-mode inductor; the first terminal of the sixth capacitor and the first terminal of the seventh capacitor are connected to the fourth common junction, the first terminal of the eighth capacitor is connected to the second terminal of the sixth capacitor, and the common junction of the sixth capacitor and the eighth capacitor is grounded; The third and fourth ports of the second common-mode inductor, the second terminal of the second TVS diode, the second terminal of the third capacitor, the second terminal of the fifth capacitor, the second terminal of the seventh capacitor, and the second terminal of the eighth capacitor are grounded.

10. An active suspension electro-hydraulic pump assembly with temperature and pressure signal switching function, comprising: An electro-hydraulic pump assembly, comprising two hydraulic pumps and two electric motors for driving the corresponding hydraulic pumps, wherein the hydraulic pumps contain a hydraulic medium; Its characteristic is that it also includes a temperature and pressure signal adapter board; The temperature and pressure signal adapter board is provided with a temperature and pressure sensor interface, a signal processing circuit and a plug-in part. The temperature and pressure sensor interface is electrically connected to the input terminal of the signal processing circuit, and the output terminal of the signal processing circuit is electrically connected to the plug-in part. The temperature and pressure signal adapter board is configured such that the temperature and pressure sensor interface is used to couple and connect with the output pin of the temperature and pressure sensor that measures the temperature and pressure parameters of the hydraulic medium, the signal processing circuit is used to perform anti-electromagnetic interference and filtering processing on the raw temperature and pressure signal output by the temperature and pressure sensor, and the plug-in part is used to output the processed temperature and pressure signal to an external controller.

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