An electro-hydraulic power-assisted pump delivery inspection control device

Abstract

The utility model provides a kind of electric hydraulic booster pump shipment inspection control device, belong to electric hydraulic booster pump testing device field, including program-controlled power supply, power switch button, test button, reset button, single-chip microcomputer control module, power detection module, fault indication module, function detection module and display screen, program-controlled power supply and through relay power end electric hydraulic booster pump power input end, control module output end connects relay control end;Each button is connected into control module input end, and control module output end connects fault indication module and display screen.Power detection module contains booster pump electrical detection module and steering sensor power detection module, based on single-chip microcomputer realization;Function detection module is used to simulate vehicle speed output button access control module input end, and control module is also connected booster pump by steering sensor signal simulation output end.The utility model improves the efficiency of electric hydraulic booster pump shipment inspection.

Description

Technical Field

[0001] This utility model belongs to the field of testing devices for electric hydraulic power pumps. Specifically, this utility model relates to a shipment inspection and control device for electric hydraulic power pumps. Background Technology

[0002] The technical background of this electro-hydraulic booster pump shipment inspection and control device mainly stems from the need for rigorous testing and control of the performance and quality of electro-hydraulic pumps. Driven by technological advancements, the performance and quality stability of electro-hydraulic pumps, as a crucial component of hydraulic systems, are vital for the normal operation of the entire hydraulic system.

[0003] Chinese Patent 223293889U discloses a portable intelligent electric hydraulic booster pump, including a pump body. A side plate is fixedly connected to the surface of the pump body, and a slot is provided on the outer surface of the side plate. A connecting block is also included, slidably mounted on the slot on the outer surface of the side plate. A portable structure is connected to the connecting block, allowing the base plate to be adjusted by rotating the connecting block for easy carrying of the pump body via a handle. The portable structure includes a threaded rod threaded through the lower surface of the connecting block. An opening is provided on the side surface of the connecting block, and a sliding plate is slidably mounted on this opening. An airbag is fixedly mounted between the sliding plates. This portable intelligent electric hydraulic booster pump features a portable structure that allows the connecting block to rotate and adjust the base plate's position. It can be easily carried by lifting it with a handle, offering flexible operation. A limiting structure is also included, with limiting rings one and two clamping the pump body to ensure stable operation and reduce shaking.

[0004] Existing technologies do not provide shipment inspection equipment for electric hydraulic booster pumps, and the over-reliance on manual inspection processes leads to low inspection efficiency and increased costs. Utility Model Content

[0005] The present invention aims to provide an inspection control device for the shipment of electric hydraulic power-assisted pumps, so as to improve the efficiency of the shipment inspection of electric hydraulic power-assisted pumps.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0007] This utility model provides an electric hydraulic booster pump shipment inspection control device, including a programmable power supply, a power switch button, a test button, a reset button, a control module, a power detection module, a fault indication module, and a function testing module. The output terminal of the programmable power supply is connected to the input terminal of the control module, the power switch button is connected to the input terminal of the control module, the test button is connected to the input terminal of the control module, the reset button is connected to the input terminal of the control module, the control module is connected to the electric hydraulic booster pump through the power detection module, the output terminal of the control module is connected to the input terminal of the fault indication module, and the control module is connected to the electric hydraulic booster pump through the function testing module.

[0008] The control module uses a microcontroller.

[0009] The power detection module includes an electric hydraulic power booster pump electrical detection module and a steering sensor power detection module. The electric hydraulic power booster pump is connected to the input terminal of the control module through the electric hydraulic power booster pump electrical detection module, and the steering sensor is connected to the input terminal of the control module through the steering sensor power detection module.

[0010] The programmable power supply is connected to the power input terminal of the electric pressure booster pump through the power terminal of the relay, and the output terminal of the control module is connected to the control terminal of the relay.

[0011] The function detection module includes a simulated vehicle speed output button and a CAN transceiver chip. The simulated vehicle speed output button is connected to the input terminal of the control module, and the output terminal of the control module is connected to the electric hydraulic power booster pump through the CAN transceiver chip.

[0012] The programmable power supply is connected to the power input terminal of the CAN transceiver chip via a first step-down circuit.

[0013] The control module is connected to the electric pressure booster pump via the analog output terminal of the steering sensor signal.

[0014] The output of the control module is connected to the display screen.

[0015] The technical effects of this utility model are as follows:

[0016] (1) This utility model improves testing efficiency and reduces testing costs by conducting standardized non-real vehicle tests on electric pressure booster pumps.

[0017] (2) This utility model adopts a structure of first testing the circuit and then testing the function. During the testing stage, the electric pressure booster pump with circuit failure is screened out, which can avoid damage to the power supply or other equipment due to the failure of the electric pressure booster pump itself.

[0018] (3) This utility model isolates the power supply of the electric pressure booster pump from the microcontroller through a relay, which reduces circuit interference and improves the safety of the device itself.

[0019] (4) This utility model has low design cost and simple operation. The device is developed using industrial-grade chips and is inexpensive. At the same time, the display screen shows the vehicle speed in real time, which is convenient for test personnel to observe. Attached Figure Description

[0020] This manual includes the following figures, which illustrate the following:

[0021] Figure 1 This is a circuit diagram of an electric hydraulic booster pump shipment inspection control device according to the present invention;

[0022] Figure 2 This is a schematic diagram of an electric hydraulic booster pump shipment inspection control device according to the present invention;

[0023] Figure 3 This is a circuit diagram of the electrical testing module of an electric hydraulic booster pump for an electric hydraulic booster pump shipment inspection control device according to this utility model.

[0024] Figure 4 This is a circuit diagram of the power detection module for the steering sensor of an electric hydraulic power steering pump shipment inspection control device according to this utility model. Detailed Implementation

[0025] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings, in order to help those skilled in the art to have a more complete, accurate and in-depth understanding of the utility model concept and technical solution, and to facilitate its implementation.

[0026] This utility model provides an outgoing inspection control device for an electric hydraulic booster pump, including a programmable power supply, a power switch button, a test button, a reset button, a control module, a power detection module, a fault indication module, and a function testing module. The output terminal of the programmable power supply is connected to the input terminal of the control module, the power switch button is connected to the input terminal of the control module, the test button is connected to the input terminal of the control module, the reset button is connected to the input terminal of the control module, the control module is connected to the electric hydraulic booster pump through the power detection module, the output terminal of the control module is connected to the input terminal of the fault indication module, and the control module is connected to the electric hydraulic booster pump through the function testing module.

[0027] The control module uses a microcontroller. The power detection module includes an electric hydraulic power booster pump electrical detection module and a steering sensor power detection module. The electric hydraulic power booster pump is connected to the control module's input terminal through the electric hydraulic power booster pump electrical detection module, and the steering sensor is connected to the control module's input terminal through the steering sensor power detection module. The programmable power supply is connected to the electric pressure booster pump's power input terminal through a relay's power terminal, and the control module's output terminal is connected to the relay's control terminal. The function detection module includes a simulated vehicle speed output button and a CAN transceiver chip. The simulated vehicle speed output button is connected to the control module's input terminal, and the control module's output terminal is connected to the electric hydraulic power booster pump through the CAN transceiver chip. The programmable power supply is connected to the CAN transceiver chip's power input terminal through a first step-down circuit. The control module is connected to the electric pressure booster pump through the steering sensor signal's simulated output terminal. The control module's output terminal is connected to the display screen.

[0028] The present invention relates to a shipment inspection and control device for an electric hydraulic booster pump.

[0029] This utility model discloses an electric hydraulic booster pump shipment inspection control device, comprising a programmable power supply, a power switch button, a test button, a reset button, a control module, a power detection module, a fault indication module, and a function detection module. The programmable power supply is used to provide power. Specifically, the programmable power supply directly provides power to the electric pressure booster pump through a relay. The programmable power supply provides power to the CAN transceiver chip through a first step-down circuit (5V step-down circuit). The programmable power supply provides power to the control module and the display screen through a first step-down circuit (5V step-down circuit) and a second step-down circuit (3.3V step-down circuit) connected in series.

[0030] The power switch button is used to control the switching of the programmable power supply, the test button is used to start the control module, and the reset button is used to clear the test data to test the next electric hydraulic booster pump to be tested.

[0031] The control module uses a microcontroller to control the testing process of the electric hydraulic booster pump. The microcontroller used in this embodiment is an STM2F103C8T6.

[0032] The power supply detection module includes an electric hydraulic power steering pump electrical detection module and a steering sensor power supply detection module. The electric hydraulic power steering pump electrical detection module is used to detect whether there is a fault in the internal circuit of the electric hydraulic power steering pump when it is not powered on, preventing damage to the testing device caused by the electric hydraulic power steering pump's own failure. The steering sensor power supply detection module is used to detect whether the steering sensor is malfunctioning. The electric hydraulic power steering pump electrical detection module and the steering sensor power supply detection module are integrated into a microcontroller.

[0033] Specifically, the detection circuit and detection principle of the electrical detection module for the electric hydraulic power booster pump are as follows: Figure 3 As shown, the microcontroller controls the conduction of the PNP transistor by controlling the NPN transistor's conduction via the control output terminal (CHECK1_ON). The voltage VBAT supplies power to the electric hydraulic booster pump through the PNP transistor. Simultaneously, a high-power, low-resistance resistor and a Schottky diode are connected in series in the circuit. When the PNP transistor is turned on, the microcontroller detects the voltage at the front end of the Schottky diode via the detection terminal (ADC_VBUS). If the positive and negative terminals of the electric hydraulic booster pump's power supply are short-circuited, the voltage at the front end of the Schottky diode is approximately 0.5V; if the power supply terminals are not short-circuited, the voltage at the front end of the Schottky diode is approximately 12V. The microcontroller can determine whether the electric hydraulic booster pump's power supply terminals are short-circuited by acquiring this voltage.

[0034] The detection circuit and detection principle of the steering sensor power supply detection module are as follows: Figure 4 As shown, under normal circumstances, the electro-hydraulic power steering pump provides 12V voltage to ensure the steering sensor works properly. The presence of 12V voltage is detected by an optocoupler. The input terminal (ANG-12V) in the circuit is connected to the power supply circuit of the electro-hydraulic power steering pump to the steering sensor. When the power supply is normal, the microcontroller's steering sensor power detection terminal (ADC_ANG) detects 0V; when the power supply is abnormal, the microcontroller detects 3.3V.

[0035] The fault indication module includes a VBUS fault light and an ANG fault light. The VBUS fault light is used to illuminate and provide a warning when there is an electrical fault in the electro-hydraulic power steering pump, and the ANG fault light is used to illuminate and provide a warning when there is a fault in the steering sensor.

[0036] The functional detection module includes a simulated vehicle speed output button and a CAN transceiver chip. The simulated vehicle speed output button is used to output simulated vehicle speed messages to the CAN transceiver chip via the control module, and then the CAN transceiver chip converts them into vehicle speed signals and outputs them to the electric hydraulic power steering pump. In this embodiment of the invention, there are three simulated vehicle speed output buttons, which are used to control the microcontroller to output simulated vehicle speed messages of 0 km / h, 30 km / h, and 80 km / h, respectively.

[0037] The display shows the current simulated vehicle speed and the motor speed of the electric hydraulic booster pump.

[0038] The control module is connected to the electric pressure booster pump via the steering signal analog output terminal, and is used to output analog steering signals to the electric hydraulic booster pump.

[0039] The connection relationships of this utility model are described in detail below.

[0040] The programmable power supply is connected to the first step-down circuit (5V step-down circuit) via a power switch button, and then to the power input terminal of the display screen via the second step-down circuit (3.3V step-down circuit). The programmable power supply is connected to the power input terminal of the electric hydraulic power booster pump via the relay contact terminal, and the control output terminal of the microcontroller is connected to the control terminal of the relay. The detection terminal of the microcontroller (ADC_VBUS) is connected to the measured point (VBUS) of the power circuit of the electric hydraulic power booster pump. The detection terminal of the microcontroller (ADC_ANG) is connected to the detection point (ANG-12V) of the power supply circuit of the electric hydraulic power booster pump to the steering sensor. The microcontroller is connected to the electric hydraulic power booster pump via a CAN transceiver chip. The microcontroller is connected to the signal input terminal of the steering sensor via a pulse width modulation signal output terminal. The microcontroller is connected to the display screen via an I2C bus. The output pins of the microcontroller are connected to the VBUS fault light and the ANG fault light, respectively. The input pins of the microcontroller are connected to three analog vehicle speed output buttons, respectively.

[0041] The working process of this utility model is described in detail below.

[0042] The tester turned on the programmable power supply via the power switch button, and then controlled the microcontroller to start the test via the test button. At the start of the test, the microcontroller detected any electrical faults in the electric hydraulic power booster pump. If the electric hydraulic power booster pump was fault-free, the microcontroller was triggered to output a relay conduction control signal. The microcontroller then performed a power supply test on the steering sensor. After confirming that both the electric hydraulic power booster pump and the steering sensor were fault-free, the tester controlled the microcontroller to output a simulated vehicle speed message to the CAN transceiver chip via the simulated vehicle speed output button. The CAN transceiver chip then converted the simulated vehicle speed message into a vehicle speed signal and output it to the electric hydraulic power booster pump. Simultaneously, the microcontroller output a simulated steering signal to the steering sensor in the electric hydraulic power booster pump. The microcontroller collected the motor speed information of the electric hydraulic power booster pump via the CAN transceiver chip and displayed it on the screen.

[0043] The beneficial effects of this utility model are described in detail below.

[0044] This invention improves testing efficiency and reduces testing costs through standardized off-vehicle testing of electric pressure booster pumps.

[0045] This invention adopts a structure that first tests the circuit and then tests the function. During the testing stage, electric pressure booster pumps with circuit faults are screened out, which can avoid damage to the power supply or other equipment due to the fault of the electric pressure booster pump itself.

[0046] This invention isolates the power supply of the electric pressure booster pump from the microcontroller through a relay, reducing circuit interference and improving the safety of the device itself.

[0047] This invention features low design cost and simple operation. The device is developed using industrial-grade chips, making it inexpensive. At the same time, the display screen shows the vehicle speed in real time, making it easy for test personnel to observe.

[0048] The present invention has been described above by way of example with reference to the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described manner. Any non-substantial improvements made using the concept and technical solution of the present invention; or the direct application of the above-described concept and technical solution of the present invention to other situations without modification, are all within the protection scope of the present invention.

Claims

1. A shipment inspection and control device for an electric hydraulic booster pump, characterized in that: The system includes a programmable power supply, a power switch button, a test button, a reset button, a control module, a power detection module, a fault indication module, and a function testing module. The output of the programmable power supply is connected to the input of the control module. The power switch button, the test button, and the reset button are all connected to the input of the control module. The control module is connected to an electric hydraulic power booster pump via the power detection module. The output of the control module is connected to the input of the fault indication module. The control module is also connected to the electric hydraulic power booster pump via the function testing module.

2. The electro-hydraulic power-assisted pump shipment inspection control device as described in claim 1, characterized in that: The control module uses a microcontroller.

3. The electro-hydraulic power-assisted pump shipment inspection control device as described in claim 1, characterized in that: The power detection module includes an electric hydraulic power booster pump electrical detection module and a steering sensor power detection module. The electric hydraulic power booster pump is connected to the input terminal of the control module through the electric hydraulic power booster pump electrical detection module, and the steering sensor is connected to the input terminal of the control module through the steering sensor power detection module.

4. The electro-hydraulic power-assisted pump shipment inspection control device as described in claim 1, characterized in that: The programmable power supply is connected to the power input terminal of the electric pressure booster pump through the power terminal of the relay, and the output terminal of the control module is connected to the control terminal of the relay.

5. The electro-hydraulic power-assisted pump shipment inspection control device as described in claim 1, characterized in that: The function detection module includes a simulated vehicle speed output button and a CAN transceiver chip. The simulated vehicle speed output button is connected to the input terminal of the control module, and the output terminal of the control module is connected to the electric hydraulic power booster pump through the CAN transceiver chip.

6. The electro-hydraulic power-assisted pump shipment inspection control device as described in claim 1, characterized in that: The programmable power supply is connected to the power input terminal of the CAN transceiver chip via a first step-down circuit.

7. The electro-hydraulic power-assisted pump shipment inspection control device as described in claim 1, characterized in that: The control module is connected to the electric pressure booster pump via the analog output terminal of the steering sensor signal.

8. The electro-hydraulic power-assisted pump shipment inspection control device as described in claim 1, characterized in that: The output of the control module is connected to the display screen.

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