A test vehicle-mounted brake device

Abstract

The application discloses a kind of test vehicle-mounted brake equipment, which comprises vehicle-mounted brake host computer, brake receiver and brake remote controller, host computer includes output interface, input interface, pressure storage tank, main control board and other core components, receiver is equipped with double antenna head, state indicator light and buzzer, remote controller is provided with anti-misoperation shield and double antenna module.Equipment is compatible with collision data acquisition equipment mounting hole, supports automatic pressure building, pressure relief process, can trigger brake through strip trigger, remote control, acceleration value multi-mode, and built-in backup battery guarantees continuous operation.The application is convenient to install, easy to operate, stable and efficient, effectively saves the space in the car, improves test safety and emergency response speed, suitable for various automobile crash test scene, with wide popularization and application value.

Description

Technical Field

[0001] This invention belongs to the field of automotive collision testing technology, specifically relating to a test vehicle-mounted braking device. Background Technology

[0002] In automotive research and development, testing, and other fields, crash testing is a crucial step in evaluating vehicle safety performance. Vehicles must be towed to speeds of up to 80 km / h for crash testing. Due to the typically limited space at test sites, sufficient braking safety redundancy must be maintained after the collision and during towing to ensure the safety of test personnel and equipment and prevent accidents.

[0003] Currently, there are no mature, similar vehicle-mounted braking products for testing in the domestic market, and the relevant demand is mainly met by international brands. However, international brand vehicle-mounted braking products for testing have several significant drawbacks: First, the operation process is complex, requiring high levels of professional skills from testing personnel, which not only increases test preparation time but also easily leads to test failure due to improper operation; second, the price is extremely high, deterring many testing units and hindering large-scale application, thus limiting the development of the domestic automotive crash testing field; third, the stability is insufficient, with frequent malfunctions under high-intensity testing environments, which not only affects the test progress but may also cause unexpected situations during the test, increasing the risk of the test.

[0004] Besides international brand products, some existing simple braking solutions also have significant shortcomings. Some solutions cannot meet the stringent requirements for braking safety redundancy under high-speed and limited space conditions, resulting in poor braking performance and difficulty in ensuring test safety. Other solutions, while improving braking performance, have significant deficiencies in terms of ease of operation and cost control. They are either cumbersome to operate or have excessively high manufacturing costs, failing to balance practicality and economy.

[0005] Therefore, developing a test vehicle-mounted braking device that is easy to operate, cost-effective, highly stable, convenient to install, and can meet the braking safety redundancy requirements under high-speed and limited site conditions has become an urgent technical problem to be solved in the field of automotive crash test technology. Summary of the Invention

[0006] The purpose of this invention is to overcome the shortcomings of existing test vehicle braking products, such as complex operation, high price, insufficient stability, and limited installation, and to provide a test vehicle braking device. This device aims to achieve convenient installation, simple operation, and stable and efficient operation, meeting the stringent requirements for braking safety redundancy in automotive crash tests, ensuring the safety of test personnel, vehicles, and test equipment, while reducing test costs and promoting the development of domestic automotive crash test technology.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a test vehicle-mounted braking device, comprising a vehicle-mounted braking host, a braking receiver, and a braking remote controller. The vehicle-mounted braking host is provided with an output interface, an input interface, a power indicator light, an upper protective cover, a pressure tank, plugs, a filter screen, a connector interface, a host mounting hole, cartridge valves, an electromagnetic coil, an oil pressure sensor, a wiring hole, a connector mounting plate, a base plate, a battery mounting slot, a main control board mounting slot, and a main control board fixing hole. Two output interfaces are used to output hydraulic pressure, one input interface is used for pressure accumulating, the pressure tank is used to store the input pressure, five plugs prevent internal pipeline pressure leakage, three filters prevent impurities from entering the device, two cartridge valves are used for pressure input / output switching, and two electromagnetic coils, when energized, control the cartridge valve switching. The sensor detects oil pressure at both input and output terminals. The brake receiver includes a 433 antenna head, a top cover, a screen, a 2.4G antenna head, connectors, mounting holes, status indicator lights, a mounting base, a buzzer, mounting holes on the base, and a receiver mainboard. Both the 433 and 2.4G antenna heads are used to enhance the antenna signal. The screen is used for parameter display and adjustment. The buzzer provides a warning when the pressure reaches the working range. The brake remote control includes a 2.4G antenna head, a 433 antenna head, a protective cover fixing hole, upper and lower protective covers, a switch, a power indicator light, an anti-accidental touch protective cover, a brake switch, upper and lower outer shells, a charging port, upper and lower cover plates, a charging indicator light, a battery, a 2.4G antenna module, a 433 antenna module, and a charging module. The anti-accidental touch protective cover prevents accidental activation of the switch. When the brake switch is pressed, a braking signal is emitted.

[0008] Furthermore, the upper protective cover of the vehicle-mounted braking host is fixed to the host body by four upper protective cover fixing bolts to protect the internal equipment. The host is also equipped with a handle for easy handling of the equipment, and a power switch is used to control the power supply of the equipment.

[0009] Furthermore, the connector mounting plate of the vehicle braking host is fixed by four connector mounting plate bolts. There are three connector interfaces for connecting signal and power harnesses, and the wire through holes serve as the harness channel between the motherboard and the sensor.

[0010] Furthermore, the electromagnetic coil of the vehicle braking host is fixed by two electromagnetic coil fixing bolts, the base plate is used to protect the main board and battery, the battery mounting slot is used to install the battery, the main control board mounting slot is used to install the main control board, and the four main control board fixing holes are used to fix the main control board.

[0011] Furthermore, the brake receiver has four mounting holes for fixing the brake receiver, a mounting base for protecting the internal equipment and fixing the main body of the equipment, mounting holes for fixing the base and the top cover, and mounting holes for fixing the receiver motherboard for fixing the receiver motherboard, which is responsible for data processing.

[0012] Furthermore, the protective cover fixing holes of the brake remote control are used to fix the upper and lower protective covers. The upper and lower outer shells and the upper and lower cover plates together protect the internal equipment. The battery powers the equipment, and the 2.4G antenna module and 433 antenna module are used to transmit remote control signals. The charging module performs voltage stabilization during charging.

[0013] Furthermore, the brake receiver has a built-in backup battery, which can be replaced to quickly conduct tests when the on-board brake host has low power.

[0014] Furthermore, the equipment is compatible with the mounting holes of collision data acquisition equipment, allowing it to be installed on the same module as other collision equipment without requiring additional space inside the vehicle.

[0015] Furthermore, the equipment supports automatic pressure build-up and pressure release modes. During pressure build-up, the hydraulic pump operates, and the equipment emits an audible alert when the injected pressure exceeds 150 bar, while the display shows the stored pressure value. During pressure release, the hydraulic pump is connected, and the pressure release ends when the brake oil pipe pressure reaches 0. The equipment then emits an audible alert and displays the pressure value.

[0016] Furthermore, after the equipment enters the waiting trigger state, it can accept braking triggering in three ways: strip trigger bar, remote control, and acceleration value, thereby improving the adaptability of test scenarios and the speed of emergency response.

[0017] Compared with the prior art, the present invention has the following significant advantages: (1) Easy installation and high space utilization: The vehicle-mounted braking host of the equipment has four host mounting holes, which are compatible with the mounting holes of the collision data acquisition equipment. It can be installed in the same module as other collision equipment without the need for additional drilling in the vehicle or occupying a lot of space, effectively avoiding the impact on the space of the dummy's torso or legs. At the same time, the installation process is simple and quick, reducing the test preparation time.

[0018] (2) Simple operation and lowered user threshold: The equipment integrates automatic pressure building and depressurization functions. The test personnel only need to press the corresponding mode button, and the equipment can automatically complete the pressure building and depressurization process without complicated manual operation. At the same time, through audible and visual prompts and status display (screen display of pressure value, status indicator light status change, buzzer reminder), the test personnel can keep abreast of the equipment's working status, making the operation safe and controllable, greatly reducing the requirements for the test personnel's professional skills and avoiding test failure due to improper operation.

[0019] (3) Stable operation and high reliability: The equipment is made of high-quality materials. Core components such as the pressure tank are made of SS316L corrosion-resistant high-pressure material. Key components such as cartridge valves and solenoid coils have undergone strict screening and testing to ensure stable operation of the equipment under high-intensity test environments. At the same time, the equipment is equipped with multiple protection mechanisms, such as filters to prevent impurities from entering, plugging to prevent pressure leakage, and oil pressure sensors to monitor pressure in real time, which further improves the reliability of the equipment and reduces the failure rate.

[0020] (4) Multi-mode triggering with strong adaptability: The equipment supports three braking triggering methods: strip triggering, remote control, and acceleration value. Testers can choose the appropriate triggering method according to different test scenarios and needs, which greatly improves the adaptability and flexibility of the equipment. For example, in tests that require precise control of braking timing, strip triggering can be selected; in tests that require manual intervention in braking, remote control triggering can be selected; and in tests that require automatic braking based on the vehicle's operating status, acceleration value triggering can be selected.

[0021] (5) Rapid emergency response and high testing efficiency: The equipment's brake receiver has a built-in backup battery, which can be quickly replaced when the vehicle brake host has low power, eliminating the need for long-term charging of the host and enabling rapid start of the test, thus effectively improving testing efficiency. At the same time, the equipment's signal transmission adopts a dual-antenna head and dual-antenna module design, ensuring stable and reliable signal reception and transmission, and fast braking response, enabling timely vehicle braking in emergency situations and ensuring test safety.

[0022] (6) Reasonable cost: This invention is independently developed and designed. Compared with international brand products, the production cost is significantly reduced, and the selling price is more reasonable, which can meet the needs of more testing units and facilitate large-scale promotion and application. At the same time, it breaks away from dependence on international brand products and provides strong support for the development of the domestic automotive crash testing field.

[0023] (7) Easy maintenance and long service life: The filter screen of the equipment can be disassembled for cleaning or replacement regularly. The components such as the clogged wires and connectors adopt standardized design, which is convenient for maintenance and replacement. The protective cover, shell and other protective components can effectively protect the internal equipment, reduce the damage of external factors to the equipment, extend the service life of the equipment, and reduce the operating costs of the testing unit. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the external structure of the vehicle-mounted braking host of the experimental vehicle-mounted braking device of the present invention; Figure 2 This is a rear view of the on-board brake unit of the experimental on-board brake device of the present invention. Figure 3 This is a schematic diagram of the bottom structure of the vehicle-mounted braking unit of the experimental vehicle-mounted braking device of the present invention; Figure 4 This is a schematic diagram of the internal structure of the vehicle-mounted braking unit of the experimental vehicle-mounted braking device of the present invention. Figure 5 This is a schematic diagram of the external structure of the brake receiver of the vehicle-mounted braking device used in the experiment of this invention; Figure 6 This is a schematic diagram of the bottom structure of the brake receiver of the vehicle-mounted braking device used in the experiment of this invention; Figure 7 This is a schematic diagram of the external structure of the brake remote control for the experimental vehicle braking device of the present invention; Figure 8 This is a schematic diagram of the bottom structure of the brake remote control for the experimental vehicle-mounted braking device of the present invention. Figure 9 This is a schematic diagram of the internal structure of the brake remote control of the vehicle-mounted braking device used in the experiment of this invention.

[0025] In the diagram: 1-Output interface, 2-Input interface, 3-Power indicator light, 4-Upper protective cover, 5-Upper protective cover fixing bolt, 6-Handle, 7-Power switch, 8-Pressure tank, 9-Plug, 10-Filter screen, 11-Connector mounting plate bolt, 12-Connector interface, 13-Main unit mounting hole, 14-Cartridge valve, 15-Solenoid coil fixing bolt, 16-Solenoid coil, 17-Oil pressure sensor, 18-Wire hole, 19-Connector mounting plate, 20-Base plate, 21-Battery mounting slot, 22-Main control board mounting slot, 23-Main control board fixing hole, 24-433 Antenna head, 25-Top cover body, 26-Screen, 27-2.4G antenna head, 28-Connector, 29-Mounting hole, 30-Status indicator light, 31-Mounting base, 32-Buzzer, 33-Base mounting hole, 34-Receiver motherboard mounting hole, 35-Receiver motherboard, 36-Cover fixing hole, 37-Upper and lower covers, 38-Switch, 39-Power indicator light, 40-Anti-accidental touch cover, 41-Brake switch, 42-Upper and lower shells, 43-Charging port, 44-Upper and lower covers, 45-Charging indicator light, 46-Battery, 47-2.4G antenna module, 48-433 antenna module, 49-Charging module. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0027] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used herein in the specification of the application is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms “comprising” and “having”, and any variations thereof, in the specification, claims and drawings of this application are intended to cover non-exclusive inclusion.

[0028] The term "embodiment" as used herein means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of the phrase "embodiment" in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0029] Furthermore, the terms "first," "second," etc., in the specification and claims of this application or in the aforementioned drawings are used to distinguish different objects rather than to describe a specific order, and may explicitly or implicitly include one or more of the features.

[0030] like Figures 1 to 9 As shown, a test vehicle-mounted braking device includes a vehicle-mounted braking host, a braking receiver, and a braking remote controller.

[0031] The vehicle-mounted brake unit has two output interfaces (1), made of brass with an inner diameter of 10mm, used for outputting hydraulic pressure; and one input interface (2), with an inner diameter of 8mm, used for connecting to a hydraulic pump for pressure storage. The power indicator light (3) uses LED beads: red indicates sufficient power, yellow indicates insufficient power, and green indicates charging. The upper protective cover (4) is made of aluminum alloy engineering material, 3mm thick, and is fixed to the main unit body with four M5 upper protective cover fixing bolts (5). The handle (6) is rubber-coated, 10cm long and 3cm wide, for easy gripping. The power switch (7) is a rocker switch with a rated voltage of 220V and a rated current of 10A.

[0032] The pressure tank 8 is made of SS316L stainless steel, with a volume of 0.16L, a pressure rating of 18MPa, and an operating temperature range of -20℃ to +80℃. Its model number is D-0.16 / 18-H080, and its serial number is SN510647. Five M8 hexagonal plugs (9) are made of carbon steel with a galvanized finish and are installed at the inlet / outlet and branch points of the internal piping of the pressure tank 8. Three stainless steel filters (10) have a filtration accuracy of 10μm and are installed at the input port 2, the inlet of the pressure tank 8, and the output port 1.

[0033] The connector mounting plate bolts 11 are M4 Phillips head bolts, 10mm in length, four in total. Connector interfaces 12 are aviation plugs, model GX16, three in total, used for power connection, signal transmission, and a backup interface. The connector mounting plate 19 is made of aluminum alloy, 2mm thick, and measures 10cm × 5cm. The main unit mounting holes 13 are M6 threaded holes, 15mm deep, four in total, distributed at the four corners of the bottom of the main unit, spaced 20cm × 15cm apart, compatible with the mounting holes of collision data acquisition equipment.

[0034] Cartridge valve 14, model SV10-20, has a rated flow rate of 20L / min and a working pressure range of 0-31.5MPa; two are available. Electromagnetic coil fixing bolts 15 are M3 size hexagon socket head cap screws, 8mm in length; two are available. Electromagnetic coils 16 have a rated voltage of 24V, a rated power of 15W, and a suction force of 50N; two are available, each corresponding to a cartridge valve 14. Oil pressure sensors 17 have a measurement range of 0-25MPa, an accuracy of ±0.5% FS, and an output signal of 4-20mA; two are available, installed at input port 2 and output port 1 respectively.

[0035] The wire guide hole 18 has a diameter of 10mm and is equipped with an internal rubber protective sleeve to prevent wire harness abrasion. The base plate 20 is made of Q235 steel plate, with a thickness of 5mm and dimensions of 30cm × 20cm, and has a painted surface. The battery mounting slot 21 has dimensions of 15cm × 8cm × 5cm and is used to install a 12V / 10Ah lithium battery. The main control board mounting slot 22 has dimensions of 20cm × 15cm × 3cm and is equipped with internal heat dissipation holes with a diameter of 2mm and a spacing of 1cm. The main control board mounting holes 23 are M3 threaded holes with a depth of 10mm, four in total, used to fix the main control board.

[0036] The brake receiver's 433 antenna head 24 and 2.4G antenna head 27 are both external telescopic antennas, extendable up to 30cm in length, with a gain of 3dBi. The main body 25 is made of aluminum alloy engineering material, 2mm thick, and measures 15cm × 10cm × 5cm. The screen 26 is a 2.4-inch TFT LCD display with a resolution of 320 × 240, adjustable brightness, and can display information such as pressure value, operating status, and battery level. Connectors 28 are two GX12 aviation plugs, one for power connection and one for signal transmission.

[0037] Mounting holes 29 are M5 threaded holes, 12mm deep, four in total, located at the four corners of the bottom of the brake receiver. Status indicator lights 30 are LEDs; red indicates pressure build-up complete, green indicates waiting to trigger, and yellow indicates a fault. The mounting base 31 is made of aluminum alloy, 4mm thick, and measures 16cm × 11cm × 2cm, with a 1mm thick anti-slip rubber pad on the bottom. The buzzer 32 has a rated voltage of 12V, a rated power of 0.5W, a volume of 80dB, and a frequency of 1kHz.

[0038] The base mounting holes 33 are M4 threaded holes, 10mm deep, four in total. The receiver motherboard mounting holes 34 are M3 threaded holes, 8mm deep, four in total. The receiver motherboard 35 adopts a multi-layer PCB design, measuring 12cm × 8cm, and integrates circuits such as the signal receiving module, data processing module, and display driver module. It operates at 12V and consumes 5W. The receiver's built-in backup battery is a 12V / 5Ah lithium battery, providing a runtime of 8 hours.

[0039] The 2.4G antenna head 27 and 433 antenna head 24 of the brake remote control are the same model as the antenna head of the brake receiver, both being external telescopic antennas. The protective cover mounting holes 36 are M3 threaded holes, 8mm deep, eight in total. The upper and lower protective covers 37 are made of aluminum alloy engineering material, 2mm thick, and measuring 10cm × 6cm × 3cm. The switch 38 is a tactile switch, rated at 36V and 5A.

[0040] The power indicator light 39 uses LED beads; green indicates sufficient power, and red indicates insufficient power. The anti-accidental-touch cover 40 is made of silicone, 2mm thick, and covers the outside of the brake switch 41. A pressure of 5N is required to press it. The brake switch 41 is a self-locking tactile switch; it locks when pressed and unlocks when pressed again. Its rated voltage is 36V and rated current is 5A. The upper and lower housings 42 are made of aluminum alloy engineering material, 3mm thick, with a frosted surface, and measure 12cm × 7cm × 4cm.

[0041] The charging port 43 is a Micro-USB interface, supporting 5V / 2A charging. The top and bottom covers 44 are made of aluminum alloy engineering material, with a thickness of 2mm, and are connected to the outer shell by clips. The charging indicator light 45 is an LED, with red indicating charging and green indicating full charge. The battery 46 is a 12V / 3Ah lithium battery with a battery life of 12 hours, and is removable and replaceable.

[0042] The 2.4G antenna module 47 operates at a frequency of 2.4-2.4835GHz, with a transmit power of 10dBm and a transmission distance of 100m. The 433 antenna module 48 operates at a frequency of 433-434.79MHz, with a transmit power of 10dBm and a transmission distance of 200m. The charging module 49 has an input voltage of 100-240V AC, an output voltage of 12V DC, and an output current of 2A, and features overcharge, over-discharge, and short-circuit protection.

[0043] The working process of the vehicle-mounted braking device used in this test is as follows: Installation: Secure the vehicle-mounted brake unit to the designated location on the vehicle using the four mounting holes 13 for the collision data acquisition equipment, ensuring a firm and secure installation. Secure the brake receiver to the dashboard in the driver's cab using the mounting holes 29, ensuring the screen 26 and status indicator lights 30 are easily visible and the antenna is unobstructed. The test personnel should carry the brake remote control with them and check that the remote control has sufficient power.

[0044] Pressure Buildup: Connect the hydraulic pump to the input interface 2 of the vehicle-mounted brake unit, turn on the power switch 7, and the power indicator light 3 will illuminate. Press the pressure buildup mode button on the main unit, and the equipment will automatically enter pressure buildup mode. The hydraulic pump will start and inject hydraulic oil into the pressure tank 8. The oil pressure sensor 17 will detect the pressure value in real time and transmit the data to the receiver main board 35 of the brake receiver. The screen 26 will display the pressure value in real time. When the pressure reaches 150 bar, the buzzer 32 will emit a continuous "beep" sound for 3 seconds, and the red status light 30 on the brake receiver will illuminate, indicating that pressure buildup is complete.

[0045] Waiting for Trigger: The test operator presses the ARM button on the brake remote control, and the green status light 30 on the brake receiver enters a "breathing" state (flashing once per second), indicating that the device is in a waiting-for-trigger state. At this time, the device can trigger braking in three ways: If the strip trigger is selected, the strip trigger is installed at a preset position on the test site; when the vehicle runs over the strip trigger, a trigger signal is transmitted to the brake receiver. If remote trigger is selected, the test operator presses the brake switch 41 on the brake remote control when braking is required. If acceleration value trigger is selected, an acceleration threshold (e.g., 5 m / s²) is preset on the main control board; when the device detects that the vehicle's acceleration reaches this threshold, it automatically triggers braking.

[0046] Braking: When the device receives a braking trigger signal, the receiver mainboard 35 of the brake receiver transmits the signal to the main control board of the vehicle brake host. The main control board controls the solenoid coil 16 to be energized, and the solenoid coil 16 generates magnetic force to drive the cartridge valve 14 to open. The high-pressure hydraulic oil in the pressure tank 8 is output to the vehicle's brake actuator through the output interface 1 to realize vehicle braking. During the braking process, the oil pressure sensor 17 continuously detects the output pressure, and the screen 26 displays the pressure changes in real time.

[0047] Pressure Relief: After the test, keep the hydraulic pump connected to input interface 2, press the pressure relief mode button on the main unit, and the equipment will automatically enter the pressure relief mode. The hydraulic oil flows back to the hydraulic pump's oil tank through the return channel. The oil pressure sensor 17 detects the brake oil line pressure. When the pressure drops to 0 bar, the buzzer 32 emits a continuous "beep" sound for 2 seconds, and the screen 26 displays a pressure value of 0, indicating that the pressure relief is complete. Turn off the equipment power switch 7. If another test is required, the above steps can be repeated. If the equipment battery is insufficient, the spare battery of the brake receiver can be replaced or the main unit and remote control can be charged.

[0048] In practical applications, this onboard braking system demonstrated excellent performance. During testing at a car crash test facility, the equipment successfully completed braking control for 100 consecutive crash tests, with braking response times consistently less than 0.1 seconds, braking distance errors not exceeding 5 cm, and pressure control accuracy reaching ±1 bar, without any malfunctions. Compared to international brand products, this equipment reduces installation time by 50%, operating steps by 60%, and its price is only one-third of international brand products, while also exhibiting higher stability, earning high praise from the testing unit.

[0049] The equipment is also easy to maintain. The filter screen 10 can be disassembled and cleaned every 50 tests. The plug 9 and connector interface 12 can be checked regularly for looseness or leakage. The battery can be deeply charged and discharged every 3-6 months depending on the frequency of use to extend the battery life.

[0050] In summary, the vehicle-mounted braking device for testing of the present invention, through reasonable structural design and optimized workflow, achieves advantages such as convenient installation, simple operation, stable operation, strong adaptability, rapid emergency response, and reasonable cost. It effectively solves the problems existing in the prior art and provides a safe, reliable, and efficient braking solution for automobile collision testing, which has important practical application value and broad market prospects.

Claims

1. A test vehicle-mounted braking device, characterized in that, The system includes a vehicle-mounted brake control unit, a brake receiver, and a brake remote control. The vehicle-mounted brake control unit is equipped with output interfaces, input interfaces, a power indicator light, an upper protective cover, a pressure tank, plugs, filters, connector interfaces, main unit mounting holes, cartridge valves, solenoid coils, oil pressure sensors, wiring holes, a connector mounting plate, a base plate, a battery mounting slot, a main control board mounting slot, and main control board mounting holes. It has two output interfaces for outputting hydraulic pressure, one input interface for pressure accumulating, a pressure tank for storing input pressure, five plugs to prevent internal pipeline pressure leakage, three filters to prevent impurities from entering the device, two cartridge valves for pressure input / output switching, two solenoid coils to control the cartridge valve switching when energized, and two oil pressure sensors to detect oil pressure at the input and output terminals. The braking receiver includes a 433 antenna head, a top cover body, a screen, a 2.4G antenna head, connectors, mounting holes, status indicator lights, a mounting base, a buzzer, mounting holes on the base, and a receiver mainboard. Both the 433 and 2.4G antenna heads are used to enhance the antenna signal. The screen is used for parameter display and adjustment. The buzzer provides a prompt when the pressure reaches the working range. The braking remote control includes a 2.4G antenna head, a 433 antenna head, a protective cover fixing hole, upper and lower protective covers, a switch, a power indicator light, an anti-accidental touch protective cover, a braking switch, upper and lower shells, a charging port, upper and lower covers, a charging indicator light, a battery, a 2.4G antenna module, a 433 antenna module, and a charging module. The anti-accidental touch protective cover prevents accidental activation of the switch. When the braking switch is pressed, a braking signal is emitted.

2. The test vehicle-mounted braking device according to claim 1, characterized in that, The upper protective cover of the vehicle-mounted braking host is fixed to the host body by four upper protective cover fixing bolts to protect the internal equipment. The host is also equipped with a handle for easy handling of the equipment, and a power switch is used to control the power supply of the equipment.

3. The test vehicle-mounted braking device according to claim 1, characterized in that, The connector mounting plate of the vehicle-mounted braking host is fixed by four connector mounting plate bolts. There are three connector interfaces for connecting signal and power harnesses, and the wire hole serves as the harness channel between the motherboard and the sensor.

4. The test vehicle-mounted braking device according to claim 1, characterized in that, The electromagnetic coil of the vehicle-mounted braking host is fixed by two electromagnetic coil fixing bolts. The base plate is used to protect the main board and the battery. The battery mounting slot is used to install the battery. The main control board mounting slot is used to install the main control board. The four main control board fixing holes are used to fix the main control board.

5. The test vehicle-mounted braking device according to claim 1, characterized in that, The brake receiver has four mounting holes for fixing the brake receiver. The mounting base is used to protect the internal equipment and fix the main body of the equipment. The mounting holes on the base are used to fix the base and the top cover. The mounting holes on the receiver motherboard are used to fix the receiver motherboard, which is responsible for data processing.

6. The test vehicle-mounted braking device according to claim 1, characterized in that, The protective cover fixing holes of the brake remote controller are used to fix the upper and lower protective covers. The upper and lower outer shells and the upper and lower cover plates together protect the internal equipment. The battery powers the equipment. The 2.4G antenna module and the 433 antenna module are used to transmit remote control signals. The charging module performs voltage stabilization during charging.

7. The test vehicle-mounted braking device according to claim 1, characterized in that, The brake receiver has a built-in backup battery, which can be replaced to quickly conduct tests when the battery of the vehicle brake host is low.

8. The test vehicle-mounted braking device according to claim 1, characterized in that, The device is compatible with the mounting holes of collision data acquisition equipment and can be installed on the same module as other collision equipment without occupying additional space inside the vehicle.

9. A test vehicle-mounted braking device according to claim 1, characterized in that, The device supports automatic pressure build-up and pressure release modes. During pressure build-up, the hydraulic pump operates, and the device emits an audible alert and displays the stored pressure value when the injected pressure exceeds 150 bar. During pressure release, the hydraulic pump is connected, and the pressure release ends when the brake oil pipe pressure reaches 0. The device then emits an audible alert and displays the pressure value.

10. A test vehicle-mounted braking device according to claim 1, characterized in that, Once the device enters the waiting-to-trigger state, it can be triggered by braking in three ways: via a strip trigger bar, remote control, or acceleration value, thereby improving the adaptability to test scenarios and the speed of emergency response.

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