Power system parameter acquisition system of multipurpose vehicle

Abstract

The invention discloses a power system parameter acquisition system of a multipurpose vehicle. The power system parameter acquisition system comprises a plurality of serial port bus data acquisition devices, a CAN bus data acquisition device, an MIC bus data acquisition device, a FlexRay bus data acquisition device, an FC bus data acquisition device, an Ethernet data acquisition device and an analog signal data acquisition device. Each data acquisition device is connected with the data acquisition and recording control terminal through a POE network; the bus data acquisition device and the analog signal data acquisition device acquire power system parameter signals of the tested vehicle; each data acquisition device can independently process various parameter data of the power propulsion system, including acquisition and analysis of various parameters of the power system of the tested vehicle and data output after acquisition and analysis; and each data acquisition device is arranged in an independent box body. The system can adapt to power system parameter acquisition with various interface requirements, and can meet the detection requirements of almost all multipurpose vehicles.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicle power system detection equipment, and particularly relates to a power system parameter acquisition system for a multi-purpose vehicle. Background Art

[0002] At present, the parameter performance of the power system of a multi-purpose vehicle is tested while the vehicle is actually running on the road. With the development of scientific experimental technology and the wide application of computers, the testing of vehicle power system parameters has become increasingly complex. Manual testing procedures are cumbersome and time-consuming. As the reliability and lifespan of power system products continue to improve, for the testing of the power devices of such vehicles with high reliability, long lifespan, but high overall vehicle value, not only is the test time long and the cost high, but it is also possible that the product has been phased out for various reasons before the lifespan test is completed.

[0003] The engine of a multi-purpose vehicle has multiple working conditions, and there are many parameters to be tested during the test process, and the test process is complex. Conducting effective tests on the engine of a multi-purpose vehicle and shortening the test cycle are problems that need to be solved currently. During the sports car experiment of the engine of a multi-purpose vehicle under different working conditions, it is necessary to track and test the load changes of the power system at any time and obtain the original load data under different driving conditions. It is necessary to design a real-time detection device for the power system parameters of a multi-purpose vehicle with multiple testing means. Summary of the Invention

[0004] The first aspect of the present invention provides a power system parameter acquisition system for a multi-purpose vehicle. The power system parameter acquisition device includes: multiple serial bus data acquisition devices, multiple CAN bus data acquisition devices, multiple MIC bus data acquisition devices, multiple FlexRay bus data acquisition devices, multiple FC bus data acquisition devices, multiple Ethernet data acquisition devices, multiple analog signal data acquisition devices, and a data acquisition record control device; each of the data acquisition devices is connected to a data acquisition record control terminal through a POE network;

[0005] The serial bus data acquisition device is connected to the serial communication bus of the vehicle power system;

[0006] The CAN bus data acquisition device is connected to the CAN communication bus of the vehicle power system;

[0007] The MIC bus data acquisition device is connected to the MIC communication bus of the vehicle power system;

[0008] The FlexRay bus data acquisition device is connected to the FlexRay communication bus of the vehicle power system;

[0009] The FC bus data acquisition device is connected to the FC communication bus of the vehicle's power system;

[0010] The Ethernet data acquisition device is connected to the Ethernet communication bus of the vehicle's power system;

[0011] The analog signal data acquisition device is connected to the analog signal acquisition interface of the vehicle's power system

[0012] Each data acquisition device can independently process various parameter data of the power system. The independent processing of various parameter data of the power system includes: parameter acquisition, parsing, and data output after parsing of the vehicle power system;

[0013] Each data acquisition device is arranged in an independent box body.

[0014] For the power system parameter acquisition system as described in the first aspect of the present invention, the data acquisition record control terminal provides power supply and LAN network data communication for various data acquisition devices through the POE network.

[0015] For the power system parameter acquisition system as described in the first aspect of the present invention, each data acquisition device is assembled in a six-sided box body. Heat dissipation grooves are provided on the outer surfaces of the six-sided box body; the six-sided box body is made of rust-proof, corrosion-resistant, and heat-conducting materials, and the outer surface of the shell is subjected to anti-corrosion, dust-proof, salt spray-proof, and anti-oxidation coating treatments. The six-sided box body is also provided with a protection device against impact and vibration;

[0016] One surface of the six-sided box body is provided with a POE network interface, a power indicator light, and a working indicator light, and another surface is provided with a communication bus interface and / or an analog signal interface for connecting to the vehicle.

[0017] For the power system parameter acquisition system as described in the first aspect of the present invention, the six-sided box body is made of aluminum alloy material.

[0018] For the power system parameter acquisition system as described in the first aspect of the present invention, a single-board card layout structure is adopted inside each six-sided box body; the data acquisition device includes: a microprocessor module, a predetermined bus communication module, a power management module, a POE network module, and an interface adaptation circuit module. Each module is welded on a circuit board;

[0019] A heat dissipation plate is provided between the circuit board and the outer shell of the six-sided box body. The surface of the circuit board adopts a three-proof coating process; multiple fixing holes are provided on the circuit board, and fixing screws are used to pass through the fixing holes to fix the circuit board inside the six-sided box body.

[0020] The power system parameter acquisition system as described in the first aspect of the present invention, the power system parameter acquisition system acquires the power system parameters of the multi-purpose vehicle through a variety of bus data acquisition devices, Ethernet data acquisition devices and analog signal data acquisition devices, including: the water temperature of the power system, the oil temperature of the power system, the oil pressure of the power system, the intake air temperature of the power system, the exhaust gas temperature of the power system, the engine speed, the vehicle gear, the vehicle speed and the multi-purpose vehicle condition conversion data.

[0021] The power system parameter acquisition system as described in the first aspect of the present invention, the variety of bus data acquisition devices, Ethernet data acquisition devices and analog signal data acquisition devices perform data acquisition, storage, processing and transmission according to the system configuration.

[0022] The power system parameter acquisition system as described in the first aspect of the present invention, the analog signal data acquisition device is directly connected to a variety of sensors on the power system to obtain power system parameter data.

[0023] The power system parameter acquisition system as described in the first aspect of the present invention, the variety of bus data acquisition devices include: a microprocessor module, a bus connector module, a predetermined bus module, a POE network interface module, a power management module and an indication control module.

[0024] The second aspect of the present invention provides an operation method for the power system parameter acquisition system described in any one of the above, the method comprising the following steps:

[0025] Step 1, power on and self-check the device, the bus data acquisition device performs a function self-check to determine whether the working state is normal, and sends the self-check result to the data recording acquisition control terminal;

[0026] Step 2, receive and parse the configuration information related to the predetermined bus data acquisition device from the data recording acquisition control terminal, the configuration information includes: test resources, working parameters, acquired data and calculation subroutines;

[0027] Step 3, call a predetermined program according to the data recording acquisition control terminal control instruction and data type, and establish a data communication of the POE network between the bus data acquisition device and the data recording acquisition control terminal;

[0028] Step 4, perform data acquisition, filtering, parsing, extraction and calculation of the power system parameters according to the system configuration information of the predetermined bus data acquisition device;

[0029] Step 5, fuse and encapsulate the data acquired by the bus data acquisition device according to the time stamp and data protocol format, and upload it to the data recording acquisition control terminal through the POE network;

[0030] Step 6: Receive a control instruction from the data recording and acquisition control terminal, and switch the working state of the bus data acquisition device according to the control instruction. The working states include: selection, start, stop, pause, and resume;

[0031] Step 7: Monitor in real time whether the working state of the bus data acquisition device is normal. If the working state of the bus data acquisition device is abnormal, send the fault to the data recording and acquisition control terminal;

[0032] Step 8: The bus data acquisition device is built-in with metering software, which controls the input / output of metering interface signals according to metering specifications to complete automatic metering.

[0033] The method of the present invention has the following advantages:

[0034] The power system parameter acquisition device has bus interfaces such as serial port bus, CAN bus, MIC bus, FlexRay bus, FC bus, Ethernet, etc. and analog quantity acquisition function, and can adapt to power system parameters with various interface requirements. This device can meet the requirements of almost all multi-purpose vehicle power system parameter acquisition subsystems.

[0035] The above description is only an overview of the technical solution of the present invention. In order to be able to understand the technical means of the present invention more clearly, it can be implemented according to the content of the specification. And in order to make the above and other purposes, features and advantages of the present invention more obvious and understandable, the following specific preferred embodiments are given and described in detail in conjunction with the drawings as follows. Brief Description of the Drawings

[0036] Figure 1 The composition schematic diagram of the power system parameter acquisition device of the present invention;

[0037] Figure 2 The external view of an independent box body of the power system parameter acquisition device of the present invention;

[0038] Figure 3 The internal structure diagram of an independent box body of the power system parameter acquisition device of the present invention;

[0039] Figure 4 The electrical principle block diagram of the bus data acquisition device of the power system parameter acquisition device of the present invention;

[0040] Figure 5 The function diagram of the data processing software of the power system parameter acquisition device of the present invention;

[0041] Figure 6 The data processing flow chart of the power system parameter acquisition device of the present invention;

[0042] Figure 7Electrical principle block diagram of the analog signal data acquisition device of the power system parameter acquisition device of the present invention.

[0043] In the present invention, the following reference numerals are used to refer to the following specific components / parts:

[0044] 1 - Indicator light; 2 - POE interface; 3 - Input interface; 4 - Heat dissipation plate; 5 - Circuit board fixing holes; 6 - Circuit board; 7 - Box body shell; 8 - Box body shell fixing screw holes; 11 - Base Detailed implementation manners

[0045] The present invention provides a power system parameter acquisition device in a multi - purpose test. This device is used to implement the function of acquiring the power system parameters of a multi - purpose vehicle. Here, the multi - purpose vehicle mainly refers to an amphibious vehicle that can freely travel in water - adjacent areas and river - lake water network areas. The power system parameter acquisition device of the present invention collects data information such as water temperature, engine oil temperature, engine oil pressure, intake air temperature, exhaust gas temperature, engine speed, vehicle gear and speed, and water - land condition conversion of the vehicle power system through the vehicle bus. The power system parameter acquisition device includes multiple independent general - purpose functional units, and each functional unit can work independently. The power system parameter acquisition device includes: serial bus data acquisition device, CAN (Controller Area Network, a serial communication protocol) bus data acquisition device, MIC (MEP CAM Interface Chip - Multiplexed Electrical Power Control And Monitor / Management Interface Chip) bus data acquisition device, FlexRay bus (an automotive general bus promoted by the FlexRay Consortium) bus data acquisition device, FC (fiber optic) bus data acquisition device, Ethernet data acquisition device, and analog signal data acquisition device, which can implement functions such as data acquisition, storage, processing, and transmission according to the system configuration definition.

[0046] The technical solutions of the present invention will be clearly and completely described below in conjunction with specific implementation manners. However, those skilled in the art should understand that the implementation manners described below are only used to illustrate the present invention and should not be regarded as limiting the scope of the present invention. Based on the implementation manners of the present invention, all other implementation manners obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0047] Appendix Figure 1 is the composition principle block diagram of the power system parameter acquisition device of the present invention;

[0048] A power system parameter acquisition system for a multi-purpose vehicle. The power system parameter acquisition device includes: multiple serial bus data acquisition devices, multiple CAN bus data acquisition devices, multiple MIC bus data acquisition devices, multiple FlexRay bus data acquisition devices, multiple FC bus data acquisition devices, multiple Ethernet data acquisition devices, multiple analog signal data acquisition devices, and a data acquisition record control device; each of the data acquisition devices is connected to a data acquisition record control terminal through a POE network;

[0049] The serial bus data acquisition device is connected to the serial communication bus of the vehicle power system;

[0050] The CAN bus data acquisition device is connected to the CAN communication bus of the vehicle power system;

[0051] The MIC bus data acquisition device is connected to the MIC communication bus of the vehicle power system;

[0052] The FlexRay bus data acquisition device is connected to the FlexRay communication bus of the vehicle power system;

[0053] The FC bus data acquisition device is connected to the FC communication bus of the vehicle power system;

[0054] The Ethernet data acquisition device is connected to the Ethernet communication bus of the vehicle power system;

[0055] The analog signal data acquisition device is connected to the analog signal acquisition interface of the vehicle power system

[0056] Each data acquisition device can independently process various parameter data of the power system. The independent processing of various parameter data of the power system includes: parameter acquisition, parsing, and parsed data output of the vehicle power system;

[0057] Each data acquisition device is arranged in an independent box.

[0058] The power system parameter acquisition device of the present invention is used to implement the power system parameter acquisition function of the multi-purpose vehicle to be tested. The power system parameter acquisition device is connected to the bus of the vehicle to be tested through various bus interfaces, and acquires data information such as water temperature, oil temperature, oil pressure, intake air temperature, exhaust gas temperature, engine speed, vehicle gear and speed, and conversion of various driving scenario working conditions of the vehicle power system.

[0059] The vehicle data communication buses used in the power system of a multi-purpose vehicle mainly include: Ethernet, serial bus, CAN bus, MIC bus, FlexRay bus, Link bus, 1553B bus and other bus communication types. The data communication bus inside the multi-purpose vehicle is composed of one or more combinations of the above-mentioned multiple bus communication types. The multiple bus interfaces provided by the power system parameter acquisition device of the present invention are used to connect to the data communication bus of the multi-purpose vehicle, so as to collect the digital parameter data and analog parameter data of the power system of the multi-purpose vehicle through the data communication bus of the vehicle during the performance test of the power system of the multi-purpose vehicle.

[0060] Embodiment 1

[0061] In order to meet the requirements of universality, scalability, modularity, portability, adaptability, etc. of the power system parameter acquisition device for flexibility in use, combinability, etc., the present invention divides the power system parameter acquisition device into multiple serial bus data acquisition devices, multiple CAN bus data acquisition devices, multiple MIC bus data acquisition devices, multiple FlexRay bus data acquisition devices, multiple FC bus data acquisition devices, multiple Ethernet data acquisition devices, and multiple analog signal data acquisition devices according to the design principles of functional modularity, portable miniaturization, and lightweight. These general-purpose data acquisition devices with relatively single and independent functions can work independently and realize functions such as data acquisition, storage, processing, and transmission according to the system configuration definition. The data acquisition record control terminal and the data acquisition device are connected through a POE (Power Over Ethernet) network, providing the working power supply and working state control to the data acquisition device, and the data acquisition device transmits the acquired data to the data acquisition record control terminal through POE. When collecting power system parameters, the data acquisition devices can be combined and trimmed according to the test acquisition requirements of the vehicle, which can meet the data acquisition requirements of the power system parameters of different models of vehicles.

[0062] The serial bus data acquisition device is connected to the serial communication bus of the vehicle. Through the serial bus, it realizes the acquisition, parsing, and processing of the power system parameter data of the vehicle, and transmits the data to the data acquisition recording control terminal through the POE network; the CAN bus data acquisition device is connected to the CAN communication bus of the vehicle. Through the CAN bus, it realizes the acquisition, parsing, and processing of the power system parameter data of the vehicle, and transmits the data to the data acquisition recording control terminal through the POE network; the MIC bus data acquisition device is connected to the MIC communication bus of the vehicle. Through the MIC bus, it realizes the acquisition, parsing, and processing of the power system parameter data of the vehicle, and transmits the data to the data acquisition recording control terminal through the POE network; the FlexRay bus data acquisition device is connected to the FlexRay communication bus of the vehicle. Through the FlexRay bus, it realizes the acquisition, parsing, and processing of the power system parameter data of the vehicle, and transmits the data to the data acquisition recording control terminal through the POE network; the FC bus data acquisition device is connected to the FC communication bus of the vehicle. Through the FC bus, it realizes the acquisition, parsing, and processing of the power system parameter data of the vehicle, and transmits the data to the data acquisition recording control terminal through the POE network; the Ethernet data acquisition device is connected to the Ethernet communication bus of the vehicle. Through the Ethernet bus, it realizes the acquisition, parsing, and processing of the power system parameter data of the vehicle, and transmits the data to the data acquisition recording control terminal through the POE network; the analog signal data acquisition device collects the analog signals of the vehicle (such as sensor signals) through the analog signal acquisition interface of the vehicle, and transmits the data to the data acquisition recording control terminal through the POE network; the data acquisition recording control terminal is connected to the serial bus data acquisition device, CAN bus data acquisition device, MIC bus data acquisition device, FlexRay bus data acquisition device, FC bus data acquisition device, Ethernet data acquisition device, and analog signal acquisition device through the POE network, providing working power and LAN network data communication for each acquisition device, effectively reducing the number of connection cables, simplifying the system connection method, and improving the efficiency and flexibility of device use.

[0063] For the power system parameter acquisition system as described in the first aspect of the present invention, the data acquisition recording control terminal provides power and LAN network data communication for various data acquisition devices through the POE network..

[0064] For the power system parameter acquisition system as described in the first aspect of the present invention, each data acquisition device is assembled in a six-sided box body, and heat dissipation grooves are provided on the outer surfaces of the six-sided box body; the six-sided box body is made of rust-proof, corrosion-resistant, and heat-conducting materials, and the outer shell surface is subjected to anti-corrosion, dust-proof, salt spray-proof, and anti-oxidation coating treatments. The six-sided box body is also provided with a protection device against impact and vibration;

[0065] One surface of the six-sided box body is provided with a POE network interface, a power indicator light, and a working indicator light, and another surface is provided with a communication bus interface and / or an analog signal interface for connecting to a vehicle.

[0066] For the power system parameter acquisition system according to the first aspect of the present invention, the six-sided box body is made of aluminum alloy material.

[0067] For the power system parameter acquisition system according to the first aspect of the present invention, each of the six-sided box bodies adopts a single-board card layout structure inside; the data acquisition device includes: a microprocessor module, a predetermined bus communication module, a power management module, a POE network module, and an interface adaptation circuit module, and each of the modules is welded on a circuit board;

[0068] A heat dissipation plate is provided between the circuit board and the outer shell of the six-sided box body, and the surface of the circuit board adopts a three-proof coating process; the circuit board is provided with a plurality of fixing holes, and fixing screws are used to pass through the fixing holes to fix the circuit board inside the six-sided box body.

[0069] For the power system parameter acquisition system according to the first aspect of the present invention, the power system parameter acquisition system acquires the power system parameters of a multi-purpose vehicle through a variety of bus data acquisition devices, Ethernet data acquisition devices, and analog signal data acquisition devices, including: the water temperature of the power system, the oil temperature of the power system, the oil pressure of the power system, the intake air temperature of the power system, the exhaust gas temperature of the power system, the engine speed, the vehicle gear, the vehicle speed, and the multi-purpose vehicle condition conversion data.

[0070] Embodiment 2

[0071] The device shells of all data acquisition devices in the power system parameter acquisition device are designed to be miniaturized and lightweight. The overall shape of each data acquisition device is a hexahedron, and the color of the device shell is military green. Heat dissipation grooves are designed on the upper, lower, left, and right of the shell to facilitate device heat dissipation. The device shell materials are all made of aluminum alloy material with rust prevention, corrosion resistance, and easy heat conduction, and the surface of the shell is treated with anti-corrosion, anti-salt spray oxidation, and coating, etc., to have the capabilities of dust prevention, water prevention, corrosion prevention, anti-salt spray, and shock and vibration resistance, meeting the vehicle-mounted and marine use environments.

[0072] Each device inside the power system parameter acquisition device adopts a single-board card structure layout design. The microprocessor module, bus communication module, power management module, POE network module, interface adaptation circuit and other hardware are integrated into a single circuit board. A heat sink is placed between the circuit board and the device shell, and heat conduction is carried out by contacting the device shell, so as to realize the heat dissipation of the device. The surface of the circuit board adopts a three-proof coating process, and fixing holes are designed at the four corners, and are fixed with the shell through fixing screws to improve the three-proof, shock resistance and vibration resistance of the device. The three-proof treatment includes: coatings for rust prevention, dust prevention and waterproofing.

[0073] On the front of each device of the power system parameter acquisition device, there is designed 1 POE network interface, multiple power indicators and multiple working indicators, which are used for data communication, power supply indication and working status indication. On the back, there are designed multiple communication bus / analog signal interfaces for connecting to the vehicle. Among them, the serial bus data acquisition device is a serial bus interface, the CAN bus data acquisition device is a CAN bus interface, the MIC bus data acquisition device is a MIC bus interface, the FlexRay bus data acquisition device is a FlexRay bus interface, the FC bus data acquisition device is an FC bus interface, the Ethernet data acquisition device is an Ethernet interface, and the analog signal acquisition device is an analog signal interface. It is used to connect to the communication bus of the vehicle under test or the analog signal acquisition port. All external interfaces adopt aviation plugs that meet the requirements of IP65. The external structure of the power system parameter acquisition device is as shown in the appendix Figure 2 and 3 shown.

[0074] Each acquisition unit of the power system parameter acquisition device can be placed in a packing box, which is convenient for transportation and carrying. The box body of the packing box adopts a rotational molding process and has characteristics such as resistance to high and low temperatures, shock resistance, vibration resistance and durability. The packing box is composed of a box body, a shock-absorbing foam inner membrane, a protective foam and a sign board, etc. The inner upper cover of the packing box is bonded with a protective foam for protecting the acquisition unit; the inner of the box body is bonded with a device partition shock-absorbing foam for placing and fixing each acquisition device and other accessories; a groove is designed on the contact surface between the upper cover and the edge of the box body, and a sealing rubber ring is embedded in the groove. When the box body is closed, the rubber ring is tightly combined with the convex strips around the box body, which is beneficial to preventing water vapor or dust from entering the box, and has the functions of waterproof, dustproof sealing and moisture-proof.

[0075] The inside of the packing box body adopts a double-layer partition design, separated by a partition shock-absorbing foam. The upper layer is used to place each acquisition unit of the power system parameter acquisition device, and the lower layer is used to place supporting accessories such as connection cables and power cables.

[0076] The power system parameter acquisition system as described in the first aspect of the present invention, the various bus data acquisition devices, Ethernet data acquisition devices, and analog signal data acquisition devices perform data acquisition, storage, processing, and transmission according to the system configuration.

[0077] The power system parameter acquisition system as described in the first aspect of the present invention, the various bus data acquisition devices include: a microprocessor module, a bus connector module, a predetermined bus module, a POE network interface module, a power management module, and an indication control module.

[0078] Embodiment 3

[0079] Each different type of bus data acquisition device realizes the acquisition, processing, conversion, and transmission of vehicle power system parameter data through different types of communication buses of the vehicle. After the data collected by each different type of bus is parsed, converted, and processed according to the vehicle communication bus protocol, the collected data is sent to the data acquisition record control terminal through POE-based Ethernet. Each different type of bus data acquisition device mainly consists of functional modules such as a bus connector of a predetermined model, a bus module of a predetermined type, a microprocessor module, a POE network module, a power management module, an indication control module, etc., and data processing software. Its composition principle is as shown in the appendix. Figure 4 Each different type of bus connector realizes the physical and electrical connection with different types of communication buses of the vehicle; the POE network module realizes the network data communication between each different type of bus data acquisition device and the data record acquisition control terminal, and at the same time provides the working power required by the bus data acquisition device; the power management module conditions the power input from the POE interface and converts it into the DC voltage required by other hardware modules; each different type of bus module can be configured into RS232, RS422, RS485 serial port types according to the usage scenario to realize the acquisition and processing of different bus data of the vehicle, and transfer the data to the microprocessor module; the indication control module controls the display state of the external indicator light through the digital I / O signal of the microprocessor module according to the working state of the bus data acquisition device; the microprocessor module runs the data processing software internally, sets the working parameters of different bus data acquisition devices according to the system configuration definition, parses, converts, and processes the data of each different type of bus according to the vehicle communication bus protocol, and finally sends the data to the data record acquisition control terminal through Ethernet.

[0080] Among various bus data acquisition devices, a domestic quad-core microprocessor module is selected for the microprocessor module. This module supports LVDS, GMAC, USB, SATA, SDIO, SPI, GPU, and H.264 video encoding and decoding functions, and supports gigabit network ports. Domestic chips are selected for different types of bus chips. The circuit design of different types of bus data acquisition devices mainly includes a microprocessor interface circuit, interface circuits for different types of modules, a POE interface circuit, a power conditioning circuit, and an Ethernet interface circuit.

[0081] For the power system parameter acquisition system according to the first aspect of the present invention, the analog signal data acquisition device is directly connected to a variety of sensors on the power system to obtain power system parameter signals.

[0082] Embodiment 4

[0083] The data processing software inside the microprocessor module is responsible for receiving and parsing the system configuration, and implementing configurations such as test resources, working parameters, working status, and data acquisition items of the serial bus data acquisition device according to the system configuration, as well as functions such as receiving, parsing, fusing, calculating, processing, and transmitting vehicle acquisition data. The data processing software adopts a modular design with high cohesion and low coupling, and is divided into function modules such as power-on self-test, configuration parsing, data reception, data processing, data fusion, status control, device monitoring, and device metering. The composition of the function modules of the data processing software is as shown in the appendix Figure 5 as follows.

[0084] The function definitions and descriptions of each function module of the data processing software are shown in Table 1.

[0085] Table 1 Function description table of data processing software.

[0086]

[0087] The second aspect of the present invention provides an operation method for the power system parameter acquisition system according to any one of the above, and the method includes the following steps:

[0088] Step 1, power on the device for self-test. The bus data acquisition device performs function self-test to determine whether the working state is normal, and sends the self-test result to the data recording acquisition control terminal;

[0089] Step 2, receive and parse the configuration information related to the predetermined bus data acquisition device from the data recording acquisition control terminal. The configuration information includes: test resources, working parameters, acquired data, and calculation subroutines;

[0090] Step 3, call the predetermined program according to the data recording acquisition control terminal control instruction and data type to establish data communication of the POE network between the bus data acquisition device and the data recording acquisition control terminal;

[0091] Step 4: According to the system configuration information of the predetermined bus data acquisition device, perform data acquisition, filtering, parsing, extraction, and calculation of the power system parameters;

[0092] Step 5: Integrate and encapsulate the data collected by the bus data acquisition device according to the time stamp and data protocol format, and upload it to the data recording acquisition control terminal through the POE network;

[0093] Step 6: Receive control instructions from the data recording acquisition control terminal, and switch the working state of the bus data acquisition device according to the control instructions. The working states include: selection, start, stop, pause, and resume;

[0094] Step 7: Monitor in real time whether the working state of the bus data acquisition device is normal. If the working state of the bus data acquisition device is abnormal, send the fault to the data recording acquisition control terminal;

[0095] Step 8: The bus data acquisition device is built-in with metering software, which controls the input / output of the metering interface signal according to the metering specification to complete automatic metering.

[0096] The data processing software is responsible for the program flow between the functional modules as shown in the appendix Figure 6 as follows.

[0097] After the analog signal data acquisition device realizes the acquisition, conversion, and processing of the vehicle power system parameter data through the analog signal acquisition interface of the vehicle, it sends the acquired data to the data acquisition recording control terminal through the POE Ethernet. The analog signal data acquisition device mainly consists of an analog signal connector, a signal acquisition module, a microprocessor module, an indication control module, a power management module, a POE network module, etc. Its composition principle is as shown in the appendix Figure 7 as follows.

[0098] Example 5

[0099] The analog signal connector realizes the physical and electrical connection between the analog signal acquisition port of the vehicle or sensors; the POE network module realizes the network data communication between the analog signal data acquisition device and the data recording and acquisition control terminal, and at the same time provides the working power required by the analog signal data acquisition device; the signal acquisition module realizes the analog-to-digital (A / D) conversion and conditioning of the analog signal, and parses and processes the signal data, and then transfers the data to the microprocessor module; the power management module conditions the power input from the POE interface and converts it into the DC5V and DC3.3V voltages required by other hardware modules; the indication control module controls the display status of the external indicator light through the digital IO signal of the microprocessor module according to the working status of the analog signal data acquisition device; the microprocessor module runs the data processing software internally, sets the working parameters of the analog signal data acquisition device according to the system configuration definition, collects, parses, converts and processes the Ethernet bus data according to the vehicle communication bus protocol, and finally sends the data to the data recording and acquisition control terminal through the Ethernet.

[0100] The internal circuit of the analog signal data acquisition device mainly includes a microprocessor interface circuit, a signal acquisition and conditioning circuit, a POE interface circuit, a power conditioning circuit and an Ethernet interface circuit.

[0101] Although the present invention has been described in detail with general descriptions and specific embodiments above, on the basis of the present invention, some modifications or improvements can be made, which are obvious to those skilled in the art. Therefore, these modifications or improvements made without departing from the spirit of the present invention all fall within the scope of protection required by the present invention.

Claims

1. A power system parameter acquisition system for a multi-purpose vehicle, characterized in that: The power system parameter acquisition equipment includes: multiple serial bus data acquisition equipment, multiple CAN bus data acquisition equipment, multiple MIC bus data acquisition equipment, multiple FlexRay bus data acquisition equipment, multiple FC bus data acquisition equipment, multiple Ethernet data acquisition equipment, multiple analog signal data acquisition equipment and data acquisition and recording control equipment; each of the data acquisition equipment is connected to the data acquisition and recording control terminal via a POE network; The serial bus data acquisition device is connected to the serial communication bus of the vehicle power system; The CAN bus data acquisition device is connected to a CAN communication bus of a power system of the vehicle; The MIC bus data acquisition device is connected to the MIC communication bus of the power system of the vehicle; The FlexRay bus data acquisition device is connected to a FlexRay communication bus of a power system of the vehicle; The FC bus data acquisition device is connected to the FC communication bus of the power system of the vehicle; The Ethernet data acquisition device is connected to an Ethernet communication bus of a power system of the vehicle; The analog signal data acquisition device is connected to the analog signal acquisition interface of the vehicle's power system Each data acquisition device can independently process multiple parameter data of the power system, and the independent processing of multiple parameter data of the power system includes: parameter acquisition, analysis and data output after analysis of the vehicle power system; Each data acquisition device is arranged in an independent box.

2. The power system parameter acquisition system according to claim 1, characterized in that: The data acquisition and recording control terminal provides power supply and LAN network data communication for various data acquisition devices through the POE network.

3. The power system parameter acquisition system according to claim 1, characterized in that: Each data acquisition device is assembled in a six-sided box body, and heat dissipation grooves are arranged on each outer surface of the six-sided box body; the six-sided box body is made of rust-proof, corrosion-resistant, and heat-conducting materials, and the outer shell surface is treated with anti-corrosion, dust-proof, salt spray-proof, and anti-oxidation coatings. The six-sided box body is also provided with a protective device against impact and vibration; A POE network interface, a power indicator light and a working indicator light are arranged on one surface of the six-sided box body, and a communication bus interface and / or an analog signal interface connected to a vehicle are arranged on the other surface.

4. The power system parameter acquisition system according to claim 3, characterized in that: The six-sided box body is made of aluminum alloy material.

5. The power system parameter acquisition system according to claim 3, characterized in that: Each of the six-sided boxes adopts a single-board card layout structure; the data acquisition device includes: a microprocessor module, a predetermined bus communication module, a power management module, a POE network module and an interface adapter circuit module, and each module is welded on a circuit board; A heat sink is arranged between the circuit board and the six-sided box shell, and the surface of the circuit board adopts a triple-proof coating process; the circuit board is provided with a plurality of fixing holes, and fixing screws are passed through the fixing holes to fix the circuit board inside the six-sided box.

6. The power system parameter acquisition system according to claim 1, characterized in that: The power system parameter acquisition system collects power system parameters of a multi-purpose vehicle through a variety of bus data acquisition devices, Ethernet data acquisition devices and analog signal data acquisition devices, including: power system water temperature, power system oil temperature, power system oil pressure, power system intake temperature, power system exhaust temperature, engine speed, vehicle gear, vehicle speed and multi-purpose vehicle operating condition conversion data.

7. The power system parameter acquisition system according to claim 6, characterized in that: The various bus data acquisition devices, Ethernet data acquisition devices and analog signal data acquisition devices perform data acquisition, storage, processing and transmission according to system configuration.

8. The power system parameter acquisition system according to claim 7, characterized in that: The analog signal data acquisition device is directly connected to various sensors on the power system to obtain power system parameter data.

9. The power system parameter acquisition system according to claim 1, characterized in that: The various bus data acquisition devices include: a microprocessor module, a bus connector module, a predetermined bus module, a POE network interface module, a power management module and an indication control module.

10. The operating method of the power system parameter acquisition system according to any one of claims 1 to 9, characterized in that: The method comprises the following steps: Step 1: The equipment is powered on for self-test. The bus data acquisition equipment performs a functional self-test to determine whether the working status is normal and sends the self-test result to the data recording and acquisition control terminal; Step 2, receiving and parsing configuration information related to a predetermined bus data acquisition device from a data recording and acquisition control terminal, wherein the configuration information includes: test resources, working parameters, acquisition data, and calculation subroutines; Step 3, calling a predetermined program according to the control instruction and data type of the data recording and acquisition control terminal, and establishing data communication of the POE network between the bus data acquisition device and the data recording and acquisition control terminal; Step 4, performing data collection, filtering, parsing, extraction and calculation of power system parameters according to the system configuration information of the predetermined bus data acquisition device; Step 5, the data collected by the bus data acquisition device is integrated and packaged according to the timestamp and data protocol format, and uploaded to the data recording and acquisition control terminal through the POE network; Step 6, receiving a control instruction from the data recording and acquisition control terminal, and switching the working state of the bus data acquisition device according to the control instruction, wherein the working state includes: selection, start, stop, pause and resume; Step 7, real-time monitoring of whether the working state of the bus data acquisition device is normal, if the working state of the bus data acquisition device is abnormal, send the fault to the data recording and acquisition control terminal; Step 8: The bus data acquisition device has built-in metering software, which controls the input / output of the metering interface signal according to the metering specification to complete the automatic metering.

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