Data acquisition control system

Abstract

The data acquisition control system comprises a test milling and casting platform, a cooling unit, a power supply, a hydraulic oil source, airtight test equipment, pressure maintaining equipment, a PLC (programmable logic controller) and a data acquisition control end, a wheel set fixing tool is fixedly mounted on the test milling and casting platform, and an electric driving wheel set is mounted on the wheel set fixing tool; the wheel set fixing tool is further provided with a wheel set temperature sensor, a noise sensor, a temperature and humidity sensor, a circulating cooling liquid temperature sensor, a vibration sensor and a pressure sensor, and the data collection control end is adopted as main man-machine interaction equipment and a processor, so that the functions of control, data collection, display, storage and the like of the electric drive wheel set are achieved. Data communication between the test platform and the PLC is realized by adopting a CAN board card, data of a wheel set temperature sensor, a noise sensor, a temperature and humidity sensor, a circulating cooling liquid temperature sensor, a vibration sensor and a pressure sensor are acquired by adopting an RS485 communication board card, and running-in and braking test work of an automobile electric drive wheel set is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of electric wheel drive test control and data acquisition, in particular to a data acquisition control system. Background Art

[0002] With the advancement of science and technology and the increasing demand for intelligent management, industries, social enterprises, and more are relying on computers for digital management, backend data processing, scientific computing, and teaching. In the process of modernization, with the increasing sophistication of modern mainstream equipment and the increasing complexity of equipment environments, higher requirements are being placed on the monitoring of daily stored data. Maintenance has traditionally been a difficult problem, requiring dedicated personnel to complete monitoring tasks. Since manual monitoring methods can easily overlook abnormalities, there is an urgent need to develop and research data acquisition and monitoring systems. Such systems can monitor on-site environmental parameters and equipment operating conditions in real time around the clock, providing timely alarms for abnormalities, thereby ensuring that the equipment environment remains within an ideal range and improving environmental reliability.

[0003] During the running-in test and braking test of the automobile electric drive wheel set, multiple active controls and parameter collection and monitoring are required to ensure the safety and integrity of the entire test.

[0004] Therefore, in view of the shortcomings of the existing technology, it is necessary to provide a data acquisition and control system to solve the shortcomings of the existing technology. Utility Model Content

[0005] The purpose of the utility model is to avoid the shortcomings of the existing technology and provide a data acquisition and control system. The data acquisition and control system adopts a data acquisition control terminal as the main human-computer interaction device and processor to realize the control, data acquisition, display and storage functions of the electric drive wheel set. A CAN board is used to realize data communication between the test platform and the PLC controller. An RS485 communication board is used to collect data from the wheel set temperature sensor, noise sensor, temperature and humidity sensor, circulating coolant temperature sensor, vibration sensor and pressure sensor, so as to facilitate the running-in test and braking test of the automobile electric drive wheel set.

[0006] The above-mentioned purpose of the present invention is achieved through the following technical means.

[0007] Provided is a data acquisition and control system, including a test milling and casting platform, a cooling unit, a power supply, a hydraulic oil source, an airtightness test device, a pressure maintaining device, a PLC controller, and a data acquisition and control terminal. A wheel set fixing fixture is fixedly installed on the test milling and casting platform, an electric drive wheel set is installed on the wheel set fixing fixture, and a wheel set temperature sensor, a noise sensor, a temperature and humidity sensor, a circulating coolant temperature sensor, a vibration sensor, and a pressure sensor are also installed on the wheel set fixing fixture. A protective outer cover is slidably installed on the outside of the test milling and casting platform.

[0008] The PLC controller is electrically connected to the data acquisition control end, cooling unit, power supply, hydraulic oil source, airtightness test equipment, pressure maintaining equipment, and wheel set fixing tooling. The data acquisition control end is connected to the temperature sensor, noise sensor, temperature and humidity sensor, circulating coolant temperature sensor, vibration sensor and pressure sensor using RS485 communication board. The temperature sensor, noise sensor, temperature and humidity sensor, vibration sensor and pressure sensor are coordinated with the electric drive wheel set for data collection, and the circulating coolant temperature sensor is coordinated with the cooling unit for data collection.

[0009] Specifically, the cooling unit cooperates with the electric drive wheel assembly, the power supply cooperates with the cooling unit, the pressure maintaining equipment, the PLC controller, and the data acquisition control terminal, the hydraulic oil source cooperates with the oil supply of the wheel assembly fixing tooling, and the airtightness test equipment and the pressure maintaining equipment cooperate with the electric drive wheel assembly.

[0010] Preferably, a hydraulic gauge and a solenoid valve are installed on the hydraulic oil source.

[0011] Specifically, a manual stop valve and a first pressure regulating valve are installed on the pressure maintaining device.

[0012] Furthermore, a pressure gauge and a second pressure regulating valve are installed on the airtight test equipment.

[0013] The utility model adopts the data acquisition control terminal as the main human-computer interaction device and processor to realize the control, data acquisition, display and storage functions of the electric drive wheel set, adopts the CAN board card to realize the data communication between the test platform and the PLC controller, and adopts the RS485 communication board card to collect data from the wheel set temperature sensor, noise sensor, temperature and humidity sensor, circulating coolant temperature sensor, vibration sensor and pressure sensor, which is convenient for the running-in test and braking test of the automobile electric drive wheel set. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The present invention is further described with reference to the accompanying drawings, but the contents in the accompanying drawings do not constitute any limitation to the present invention.

[0015] Figure 1 This is a structural block diagram of a data acquisition and control system of the utility model.

[0016] from Figure 1 Including:

[0017] 1. Milling and casting platform;

[0018] 2. Cooling unit;

[0019] 3. Power supply;

[0020] 4. Hydraulic oil source;

[0021] 5. Airtight test equipment;

[0022] 6. Pressure maintaining equipment;

[0023] 7. PLC controller;

[0024] 8. Data acquisition and control terminal;

[0025] 9. Wheel set fixing tooling;

[0026] 10. Electric drive wheel set;

[0027] 11. Wheel temperature sensor;

[0028] 12. Noise sensor;

[0029] 13. Temperature and humidity sensor;

[0030] 14. Circulating coolant temperature sensor;

[0031] 15. Vibration sensor;

[0032] 16. Pressure sensor;

[0033] 17. Hydraulic gauge;

[0034] 18. Solenoid valve;

[0035] 19. Manual stop valve;

[0036] 20. First pressure regulating valve;

[0037] 21. Barometer;

[0038] 22. Second pressure regulating valve. DETAILED DESCRIPTION

[0039] The present invention will be further described with reference to the following embodiments.

[0040] Example 1.

[0041] like Figure 1As shown, a data acquisition and control system includes a test milling and casting platform 1, a cooling unit 2, a power supply 3, a hydraulic oil source 4, an airtight test device 5, a pressure maintaining device 6, a PLC controller 7, and a data acquisition control terminal 8. A wheel set fixing fixture 9 is fixedly installed on the test milling and casting platform 1, an electric drive wheel set 10 is installed on the wheel set fixing fixture 9, and a wheel set temperature sensor 11, a noise sensor 12, a temperature and humidity sensor 13, a circulating coolant temperature sensor 14, a vibration sensor 15 and a pressure sensor 16 are also installed on the wheel set fixing fixture 9. A protective outer cover is slidably installed on the outside of the test milling and casting platform 1.

[0042] The present application is used for the running-in test, air tightness test and braking test of the electric drive wheel group 10 of an automobile. First, the bottom support of the electric drive wheel group 10 of the automobile is performed by the milling and casting platform 1, and the wheel group fixing tool 9 is fixed to the milling and casting platform 1. Then the electric drive wheel group 10 is fixed. The wheel group fixing tool 9 can realize the hydraulic movement adjustment of the electric drive wheel group 10 through the hydraulic oil source 4, and the experimental circulation cooling of the electric drive wheel group 10 is realized by the cooling unit 2. The power supply 3 supplies power to each device, and the air tightness test equipment is used to perform an air tightness test on the electric drive wheel group 10. The pressure maintaining equipment 6 is used to maintain the pressure of the electric drive wheel group 10 test. The specific operation control of the test is realized by the PLC controller 7. The wheel group temperature sensor 11, the noise sensor 12, the temperature and humidity sensor 13, the circulating coolant temperature sensor 14, the vibration sensor 15 and the pressure sensor 16 respectively collect data from the electric drive wheel group 10 and feed it back to the data acquisition control terminal 8. The protective outer cover can improve the safety of the implementation process.

[0043] The PLC controller 7 communicates with the data acquisition control terminal 8, the cooling unit 2, the power supply 3, the hydraulic oil source 4, the airtightness test equipment 5, the pressure maintaining equipment 6, and the wheel assembly fixing tool 9 through the CAN board. The data acquisition control terminal 8 is connected to the temperature sensor, the noise sensor 12, the temperature and humidity sensor 13, the circulating coolant temperature sensor 14, the vibration sensor 15 and the pressure sensor 16 using the RS485 communication board. The temperature sensor, the noise sensor 12, the temperature and humidity sensor 13, the vibration sensor 15 and the pressure sensor 16 are coordinated with the electric drive wheel assembly 10 for data collection, and the circulating coolant temperature sensor 14 is coordinated with the cooling unit 2 for data collection.

[0044] The data acquisition control terminal 8 is model LZ-012, which has a built-in LabVIEW acquisition program. It monitors the speed, torque, current, voltage, temperature, pressure, noise and other parameters in real time throughout the entire process, collects line graphs, and saves them in separate folders to achieve traceable process management.

[0045] The milling and casting platform 1 is a cast iron platform of 1.5m×2m.

[0046] The cooling power of cooling unit 2 is not less than 28KW.

[0047] The measuring range of the temperature sensor is 0-130℃.

[0048] The measurement range of the noise sensor 12 is 0-85dB.

[0049] The measuring range of the temperature and humidity sensor 13 is 0-80°C.

[0050] The measurement range of the vibration sensor 15 is 10-5000 Hz.

[0051] The measuring range of the circulating coolant temperature sensor 14 is 0-100°C.

[0052] The measuring range of the pressure sensor 16 is 0-25 MPa, and the accuracy meets 0.01 Kpa.

[0053] The protective outer cover is movable, and the wheel group rotates in the tangential direction and the end cover side is protected, and the end cover side protection is detachable.

[0054] The cooling unit 2 cooperates with the electric drive wheel group 10, the power supply 3 cooperates with the cooling unit 2, the pressure maintaining equipment 6, the PLC controller 7, and the data acquisition control terminal 8 for power supply, the hydraulic oil source 4 cooperates with the wheel group fixing tooling 9 for oil supply, and the airtight test equipment 5 and the pressure maintaining equipment 6 cooperate with the electric drive wheel group 10.

[0055] Cooling unit 2 adopts XR-10AD type.

[0056] The hydraulic oil source 4 is of model LZ-012 with a power of 1.5 kW, and is coordinated with the wheel set fixing fixture 9 for oil supply through a hydraulic pipeline.

[0057] A hydraulic gauge 17 and a solenoid valve 18 are installed on the hydraulic oil source 4 .

[0058] The pressure range of the hydraulic oil source 4 is adjustable from 0 to 25 MPa, the oil tank capacity is not less than 40 L, and the accumulator capacity is not less than 6 L.

[0059] A manual stop valve 19 and a first pressure regulating valve 20 are installed on the pressure maintaining device 6 .

[0060] The pressure regulating range of the pressure maintaining device 6 is 0-25 MPa, and the system pressure drop is less than 0.34 Kpa.

[0061] The airtightness test equipment 5 is installed with a pressure gauge 21 and a second pressure regulating valve 22 .

[0062] The model of airtight test equipment 5 is LZ-012, and the air pressure is adjustable from 0-500kpa and 0-800kpa.

[0063] The data acquisition control terminal 8 adopts a multi-threaded architecture to achieve overall control of the system. The operation window will clearly prompt the current test window to select the left or right motor, and the product's test data will be independently saved in different paths.

[0064] Set up a wheel group number input window. All tests are carried out after the number is entered. The operator selects the test items according to the test requirements and sets the test parameters by himself. After the test starts, the process data is collected and monitored in real time through various sensors. After the test, the process data is saved in a separate folder based on the wheel group number, which is convenient for later record traceability.

[0065] During the run-in test, record the initial temperature and water temperature at each speed test. Also record the maximum temperature and maximum noise test results for the end cover, outer planetary wheel carrier cylindrical surface, hub bearing seat, brake disc end face, reducer end cover piston seat, motor water jacket, and water inlet and outlet. The product run-in test temperature rise (maximum point) should be less than 80°C, the equilibrium temperature should not exceed 100°C, and the maximum temperature must be less than 130°C.

[0066] During the air tightness test and the braking performance test, the pressure value and the variation range can be set, the pressure sensor 16 records the pressure change in real time, and a judgment is made on the test results.

[0067] The present invention realizes the control, data acquisition, display and storage functions of the electric drive wheel set 10 by adopting the data acquisition control terminal 8 as the main human-computer interaction device and processor, adopts the CAN board card to realize the data communication between the test platform and the PLC controller 7, and adopts the RS485 communication board card to collect data from the wheel set temperature sensor 11, the noise sensor 12, the temperature and humidity sensor 13, the circulating coolant temperature sensor 14, the vibration sensor 15 and the pressure sensor 16, so as to facilitate the running-in test and braking test of the automobile electric drive wheel set 10.

[0068] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention and are not intended to limit the scope of protection of the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention may be modified or replaced by equivalents without departing from the essence and scope of the technical solution of the present invention.

Claims

1. A data acquisition and control system, characterized in that: It includes a test milling and casting platform, a cooling unit, a power supply, a hydraulic oil source, an airtightness test device, a pressure maintaining device, a PLC controller, and a data acquisition control terminal. The test milling and casting platform is fixedly installed with a wheel set fixing fixture, and the wheel set fixing fixture is installed with an electric drive wheel set. The wheel set fixing fixture is also installed with a wheel set temperature sensor, a noise sensor, a temperature and humidity sensor, a circulating coolant temperature sensor, a vibration sensor, and a pressure sensor. A protective outer cover is slidably installed on the outside of the test milling and casting platform. The PLC controller is electrically connected to the data acquisition control end, the cooling unit, the power supply, the hydraulic oil source, the airtightness test equipment, the pressure maintaining equipment, and the wheel group fixing tooling respectively. The data acquisition control end is connected to the temperature sensor, the noise sensor, the temperature and humidity sensor, the circulating coolant temperature sensor, the vibration sensor, and the pressure sensor respectively using an RS485 communication board. The temperature sensor, the noise sensor, the temperature and humidity sensor, the vibration sensor, and the pressure sensor are coordinated with the electric drive wheel group for data acquisition, and the circulating coolant temperature sensor is coordinated with the cooling unit for data acquisition.

2. A data acquisition and control system according to claim 1, characterized in that: The cooling unit cooperates with the electric drive wheel group, the power supply cooperates with the cooling unit, the pressure maintaining equipment, the PLC controller, and the data acquisition control end, the hydraulic oil source cooperates with the oil supply of the wheel group fixing tooling, and the airtight test equipment and the pressure maintaining equipment cooperate with the electric drive wheel group.

3. A data acquisition and control system according to claim 2, characterized in that: A hydraulic gauge and a solenoid valve are installed on the hydraulic oil source.

4. A data acquisition and control system according to claim 3, characterized in that: The pressure maintaining device is equipped with a manual stop valve and a first pressure regulating valve.

5. A data acquisition and control system according to claim 4, characterized in that: The airtight test equipment is equipped with a pressure gauge and a second pressure regulating valve.

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