Multifunctional detection device and method for four-wheeler

Abstract

The invention belongs to the technical field of four-wheeler detection, and particularly relates to a four-wheeler multifunctional detection device and method. Comprising a hardware module, a control module, a display module and a sensing module, the hardware module is a detection platform, and four unpowered rollers are arranged on the upper end face of the detection platform; the display module comprises a nixie tube and an upper computer, and the upper computer is arranged at one corner of the upper end face of the detection platform; the sensor comprises an encoder and a current and voltage sensor; the control module is a master control chip. According to the multifunctional detection device and method for the four-wheeler, the two pairs of rollers with different friction forces are used for replacing off-site test, and a real on-road test can be simulated only by fixing the four-wheeler on detection equipment and turning on a switch of the four-wheeler. Operators do not need to understand theoretical knowledge or operate complex software, and a software interface is visually displayed.

Description

Technical Field

[0001] The invention belongs to the technical field of four-wheel vehicle detection, and in particular relates to a multifunctional four-wheel vehicle detection device and method. Background Art

[0002] The electric four-wheel vehicle testing device is a device used to evaluate the performance, safety and reliability of electric four-wheel vehicles. It can simulate the operating status of electric four-wheel vehicles under different working conditions, measure its speed, current, voltage, mileage and other parameters, and perform data analysis and evaluation.

[0003] The technical background of the electric four-wheel vehicle test device mainly involves the following aspects: The structure and working principle of electric four-wheel vehicles. Electric four-wheel vehicles are an auxiliary tool for elderly and disabled people with limited mobility to provide convenient travel. They are composed of batteries, motors, controllers, frames and other components. They can be controlled by handles or other means to move forward, backward, turn and other movements. The performance parameters of electric four-wheel vehicles mainly include speed, current, voltage, mileage, etc. These parameters directly affect the safety, comfort, endurance and other aspects of electric four-wheel vehicles.

[0004] Standards and specifications for electric four-wheel vehicles. In order to ensure the quality and safety of electric four-wheel vehicles, some relevant standards and specifications have been formulated both internationally and domestically, which put forward some requirements and guidance for the design, manufacture, testing, and use of electric four-wheel vehicles. For example, the ISO 7176 series of standards are internationally used standards for four-wheel vehicles, among which ISO 7176-2:2017 specifies the dynamic stability test method for electric four-wheel vehicles1; EN 12184:2009 is the EU standard for electric four-wheel vehicles and scooters, which specifies the test items for the braking system, bracket, flammability, etc. of electric four-wheel vehicles2; GB / T 13800-2017 is my country's standard for electric four-wheel vehicles, which specifies the classification, terminology, requirements, test methods, etc. of electric four-wheel vehicles.

[0005] Test system and method for electric four-wheeled vehicles. According to different test purposes and contents, the test system for electric four-wheeled vehicles can be divided into two categories: one is a system based on real vehicle testing, and the other is a system based on simulation models. Systems based on real vehicle testing usually need to be tested in a special test site or on actual roads. Various sensors and instruments need to be installed to measure the speed, current, voltage, mileage and other parameters of the electric four-wheeled vehicle, and data processing and analysis are performed through data acquisition cards and computers. The advantage of this system is that it can reflect the actual usage situation. The disadvantage is that the test process is time-consuming and labor-intensive, greatly affected by environmental factors, and difficult to repeat and standardize. The system based on the simulation model establishes a mathematical model and control algorithm for the electric four-wheeled vehicle, uses computer software for simulation, and can predict the performance parameters of the electric four-wheeled vehicle under different working conditions, and display the results through a graphical interface. The advantage of this system is that the test process is fast and convenient, and a comparative analysis of various situations can be performed. The disadvantage is that the accuracy of the model and algorithm needs to be verified, and it is difficult to consider all influencing factors.

[0006] In summary, the existing electric four-wheel vehicle detection device has the following problems: 1. It is impossible to display the real-time speed, mileage, current, voltage, power and other data of the electric four-wheel vehicle without load in real time; 2. Existing electric four-wheel vehicles need to be tested under actual working conditions before they can be put on the road. There is no actual testing site, the testing environment requirements are high, and the cost is high; 3. Electric four-wheel vehicles involve many fields such as kinematics, dynamics, power batteries, and motor control. Modeling is difficult and the simulation data cannot truly reflect the actual situation of the four-wheel vehicle being tested. Summary of the invention

[0007] The present invention aims at the above existing technical problems, and provides a multifunctional detection device and method for four-wheeled vehicles. The device uses two pairs of rollers with different friction forces to replace the off-site test. It only needs to fix the four-wheeled vehicle on the detection device and turn on the switch of the four-wheeled vehicle to start the simulated on-road test of the real vehicle. The operator does not need to understand theoretical knowledge, nor does he need to operate complex software, and the software interface is intuitively displayed.

[0008] In order to achieve the above object, the technical solution adopted by the present invention is as follows: A four-wheel vehicle multifunctional detection device comprises a hardware module, a control module, a display module and a sensor module; The hardware module is a detection platform, and the upper end surface of the detection platform is provided with four unpowered rollers; The display module includes a digital tube and a host computer, and the host computer is arranged at a corner of the upper surface of the detection platform; The sensor includes an encoder and a current and voltage sensor; The control module is a main control chip.

[0009] Preferably, the encoder detects the real-time speed of the wheels of the four-wheel vehicle, and the current and voltage sensor detects the real-time current and voltage of the battery of the four-wheel vehicle.

[0010] A method for using a multifunctional detection device for a four-wheeled vehicle, comprising: Step 1: Fix the four-wheel vehicle to the upper end surface of the testing platform by means of straps, with the rear wheels of the four-wheel vehicle placed between the rollers and the front wheels placed on the upper end surface of the testing platform; Step 2: The battery of the four-wheel vehicle is connected to the current and voltage sensor 7 of the detection equipment, the current and voltage sensor 7 is connected to the host computer and the digital tube display 2, and the encoder 6 is connected to the host computer 5 and the digital tube display 2; Step 3: Connect the testing equipment to the power supply; Step 4: Press the switch button 3 to turn on the detection device.

[0011] Step 5: Turn on the four-wheel vehicle and start the wheels turning; Step 6: Display the detected data through the host computer 5 and the digital tube display 2.

[0012] Compared with the prior art, the present invention has the following beneficial effects: The present invention discloses a multifunctional detection device and method for a four-wheel vehicle. The device uses rollers with different friction forces to replace off-site tests (the roller with a large friction coefficient contacts the driving wheel and can accurately provide the wheel speed to the encoder, and the pair of rollers with a small friction coefficient cooperates with the roller with a large friction coefficient to support the driving wheel and reduce the friction coefficient). It only needs to fix the four-wheel vehicle on the detection device and turn on the switch of the four-wheel vehicle to start simulating the on-road test of the actual vehicle. The digital accuracy can reach 0.01, and all the attribute parameters of the product can be expressed more intuitively and accurately. In addition, the operator does not need to understand theoretical knowledge or operate complex software, and the software interface is intuitively displayed. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention.

[0014] In the attached picture: Figure 1 It is a schematic diagram of the structure of the device and the four-wheel vehicle of the present invention; Figure 2 It is a structural schematic diagram of the roller of the present invention; Figure 3 is a structural diagram of the control system of the present invention; Figure 4 It is the speed detection software operation interface of the present invention; Figure 5 This is the operating interface of the current and voltage detection software of the present invention.

[0015] Among them, 1. Detection platform, 2. Digital tube display, 3. Switch button, 4. Roller, 401. Polyurethane roller, 402. Steel roller, 5. Host computer, 6. Encoder, 7. Current and voltage sensor. DETAILED DESCRIPTION

[0016] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0017] Example: A multifunctional detection device for a four-wheeled vehicle, comprising a hardware system and a software system; The hardware system includes a detection module, a control module, a display module and a sensor module; The hardware module is a detection platform 1 , which is welded from 3 mm pure aluminum plates and has good stability and corrosion resistance. Four unpowered rollers 4 are arranged on the upper end surface of the detection platform 1 .

[0018] Furthermore, the friction of the two pairs of rollers of the device of the present invention is different. The roller 4 of the present invention includes a polyurethane roller 401 and a steel roller 402. The polyurethane roller 401 has a large friction. The polyurethane roller is a solid roller with a diameter of 70 mm and a length of 100 mm. The steel roller is a solid roller with a diameter of 60 mm and a length of 100 mm made of 45# steel.

[0019] The pair of rollers with a large friction coefficient in contact with the drive wheel can accurately provide the wheel speed to the encoder. The pair of rollers with a small friction coefficient cooperate with the pair with a large friction coefficient to support the drive wheel and reduce the friction coefficient.

[0020] The display module includes a digital tube display 2 and a host computer 5, the host computer 5 is arranged at the front end of the upper end of the detection platform 1, the digital tube display 2 is arranged on the side of the detection platform 1, and the digital tube display 2 is provided with a switch button 3; The sensor includes an encoder 6 and a current and voltage sensor 7 .

[0021] The encoder detects the real-time speed of the four-wheel vehicle wheels, and the current and voltage sensor 7 detects the real-time current and voltage of the four-wheel vehicle battery.

[0022] The control module is a main control chip, specifically, Renergy-RN8208G and TS1102A main control chips are used to calculate the signal collected by the encoder, and then the real-time speed and mileage are displayed through the digital tube display 2 of the display module.

[0023] The main control chip processes the signals collected by the current and voltage sensors and displays them on the computer through the upper computer 5 software of the display module.

[0024] Furthermore, the detection device is connected to a 24V power supply.

[0025] Furthermore, all the wiring harnesses of the sensing system of this device are hidden inside the base and connected to the operating table through pipes. Each hardware module of this device adopts a modular design, and each module retains a USB communication interface, which can independently communicate with the host computer in real time.

[0026] The software system includes basic parameter module, data acquisition module, reset module, instrument address setting module and system setting module.

[0027] A method for using a four-wheel vehicle multifunctional detection device can simulate the operating state of an electric four-wheel vehicle under no-load or full-load conditions, and can reflect the actual usage conditions, thereby improving the comprehensiveness and scientificity of the test. It includes: Step 1: Fix the four-wheel vehicle to the upper end surface of the testing platform by means of straps, with the rear wheels of the four-wheel vehicle placed between the rollers and the front wheels placed on the upper end surface of the testing platform; Step 2: The battery of the four-wheel vehicle is connected to the current and voltage sensor 7 of the detection equipment, the current and voltage sensor 7 is connected to the host computer and the digital tube display 2, and the encoder 6 is connected to the host computer 5 and the digital tube display 2; Step 3: Connect the testing equipment to the power supply; Step 4: Press the switch button 3 to turn on the detection device; Step 5: Turn on the four-wheel vehicle and start the wheels turning; Step 6: Display the detected data through the host computer 5 and the digital tube display 2.

[0028] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A multifunctional detection device for four-wheeled vehicles, characterized in that: Including hardware system and software system; The hardware system includes a detection module, a control module, a display module and a sensor module; The hardware module is a detection platform (1), and the upper end surface of the detection platform (1) is provided with four unpowered rollers (4); The display module comprises a digital tube display (2) and a host computer (5), wherein the host computer (5) is arranged at the front end of the upper end face of the detection platform (1), the digital tube display (2) is arranged at the side of the detection platform (1), and a switch button (3) is arranged on the digital tube display (2); The sensor comprises an encoder (6) and a current and voltage sensor (7); The control module is a main control chip; The software system includes basic parameter module, data acquisition module, reset module, instrument address setting module and system setting module.

2. A four-wheel vehicle multifunctional detection device according to claim 1, characterized in that: The encoder (6) detects the real-time speed of the wheels of the four-wheel vehicle, the current and voltage sensor (7) detects the real-time current and voltage of the battery of the four-wheel vehicle, and the main control chip collects and controls data.

3. A four-wheel vehicle multifunctional detection device according to claim 2, characterized in that: The basic parameter module includes a communication type submodule, a port submodule and a bit rate submodule.

4. A four-wheel vehicle multifunctional detection device according to claim 3, characterized in that: The data acquisition module and the reset module include two modes: manual and automatic.

5. A method for using a multifunctional detection device for a four-wheeled vehicle, characterized in that: include: Step 1: fix the four-wheel vehicle to the upper end surface of the detection platform (1) by means of a strap, with the rear wheels of the four-wheel vehicle placed between the rollers (4) and the front wheels placed on the upper end surface of the detection platform (1); Step 2: The battery of the four-wheel vehicle is connected to the current and voltage sensor (7) of the detection equipment, the current and voltage sensor (7) is connected to the host computer and the digital tube display (2), and the encoder (6) is connected to the host computer (5) and the digital tube display (2); Step 3: Connect the testing equipment to the power supply; Step 4: Press the switch button (3) to turn on the detection device; Step 5: Turn on the four-wheel vehicle and start the wheels turning; Step 6: Display the detected data through the host computer (5) and the digital tube display (2).

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