ATS controller integration test platform

Abstract

The invention discloses an ATS controller integration test platform, and relates to the technical field of thermal management of automobiles and electronic equipment, and the ATS controller integration test platform comprises a test platform case which comprises an upper computer, a test platform MCU and a communication system. The ATS controller integrated test platform provided by the embodiment of the invention can simulate a complex working condition, realizes comprehensive test of the ATS controller, greatly improves the test range, can evaluate the performance of the ATS controller more comprehensively compared with the test of a single function in the prior art, and improves the test efficiency by simulating a real working environment. The communication between the whole vehicle and the ATS controller is accurately simulated by utilizing RS485 communication and a CAN bus protocol, meanwhile, the working condition can be truly restored through the temperature sensor, the pressure sensor and the flow sensor, the performance of the ATS controller can be accurately evaluated, the reliability of a test result is ensured, and through the arranged upper computer, the reliability of the ATS controller is ensured. The possibility of errors caused by human intervention is reduced, and the testing efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of thermal management of automobiles and electronic devices, and particularly to an integrated test platform for an ATS controller. Background Art

[0002] With the rapid development of the automotive industry, the thermal management system of vehicles has become increasingly complex. As the core control unit of the thermal management system, ATS (Automatic Thermal System for automotive and electronic devices) plays a crucial role in ensuring that the engine, battery, and other key components are at normal operating temperatures.

[0003] However, there are many deficiencies in the current testing methods for ATS controllers. Existing tests are mostly single-function tests, with single testing methods and the problem of being unable to simulate complex working conditions. There is a lack of a platform that can simulate real vehicle conditions and conduct comprehensive integrated tests on ATS. In the factory production line environment, due to the lack of integrated test conditions, it is difficult to simulate complex working conditions such as high temperatures of sensors or fan heat dissipation instructions initiated by the whole vehicle, and it is impossible to conduct preliminary system tests on the ATS controller, resulting in the inability to accurately evaluate its performance and reliability in actual use.

[0004] In view of this, the present invention is specifically proposed to solve the above technical problems. Summary of the Invention

[0005] The purpose of the present invention is to provide an integrated test platform for an ATS controller to solve the technical problems of single testing methods for ATS controllers and the inability to simulate complex working conditions in the prior art.

[0006] The object of the present invention is to provide an integrated test platform for an ATS controller, including a test platform chassis, and the test platform chassis includes: A host computer, which is used to simulate the vehicle operating environment and monitor; A test platform MCU, which is used to receive the simulation instructions from the host computer, and simulate the control instructions issued by the whole vehicle through the simulation instructions, and control the ATS controller to respond through the control instructions to achieve the simulation of the vehicle environment; A communication system, which is used for communication response among the host computer, the test platform MCU, and the ATS controller.

[0007] Further, the communication system includes RS communication and CAN bus protocol; RS communication is used for two-way communication between the host computer and the test platform MCU; The CAN bus protocol is used for communication response between the test platform MCU and the ATS controller.

[0008] Further, the test platform chassis further includes a power supply interface for powering the entire test platform chassis.

[0009] Further, the control instructions include temperature control, water pump control, and fan speed control.

[0010] Further, a connection harness interface is provided on the test platform chassis for connecting the test platform MCU to the ATS controller.

[0011] Further, a power - controllable resistor array is also provided on the test platform chassis. The resistor array is used to simulate the thermal load characteristics of the engine and battery. By adjusting the resistance value and power of the resistor array, the heat generated under different working conditions can be simulated to test the response and control ability of the ATS controller to temperature changes.

[0012] Further, a cooling fan is provided on the test platform chassis. The cooling fan is arranged close to the test platform MCU and is used to exhaust the heat dissipated by the test platform MCU from the test platform chassis.

[0013] Even further, temperature sensors, pressure sensors, and flow sensors are also provided on the test platform chassis. The temperature sensors are used to simulate the temperature monitoring of the engine and battery in the real vehicle thermal management system and transmit the generated simulated temperature signals to the ATS controller to trigger the temperature control logic of the ATS controller; The pressure sensors are used to simulate the pressure conditions in the coolant pipeline and air - conditioning system of the real vehicle thermal management system; The flow sensors are used to monitor the flow rate of the coolant and refrigerant.

[0014] By adopting the above - mentioned technical solutions, the present invention has the following beneficial effects: Comprehensiveness: The ATS controller integrated test platform provided by the embodiments of the present application can simulate complex working conditions, achieve a comprehensive test of the ATS controller, greatly improve the test scope, and can evaluate the performance of the ATS controller more comprehensively compared with the single - function tests in the prior art.

[0015] Accuracy: By simulating the real working environment, accurately simulating the communication between the entire vehicle and the ATS controller using RS485 communication and CAN bus protocol, and at the same time, the working conditions can be truly restored through the set temperature sensors, pressure sensors, and flow sensors, the performance of the ATS controller can be accurately evaluated, ensuring the reliability of the test results.

[0016] Efficiency improvement: Through the set upper computer, the test process is standardized, the possibility of errors caused by human intervention is reduced, the test efficiency is improved, and it helps to shorten the product development cycle. Description of the Drawings

[0017] The accompanying drawings, as part of this application, are used to provide a further understanding of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention, but do not unduly limit the present invention. Obviously, the accompanying drawings in the following description are only some embodiments. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings. In the drawings: Figure 1 is a schematic structural diagram of the ATS controller integrated test platform provided by an embodiment of this application; Figure 2 is Figure 1 a schematic structural diagram of another perspective of; Figure 3 is a schematic internal structure diagram of the ATS controller integrated test platform provided by an embodiment of this application.

[0018] Reference numerals: 1, test platform chassis; 2, cooling fan; 3, host computer; 4, sensor switching button; 5, power switch; 6, analog sensor; 7, connection harness interface; 8, test platform MCU; 9, power supply interface.

[0019] It should be noted that these drawings and text descriptions are not intended to limit the scope of the concept of the present invention in any way, but to illustrate the concept of the present invention to those skilled in the art by referring to specific embodiments. Detailed Description of the Specific Embodiments

[0020] The specific embodiments of the present invention will be further described in detail in conjunction with the accompanying drawings.

[0021] See Figures 1 to 3 As shown, an embodiment of this application provides an ATS controller integrated test platform, including a test platform chassis 1, and the test platform chassis 1 includes: a host computer 3, a test platform MCU 8, and a communication system. The host computer 3 is used to simulate the vehicle running environment and monitor. The test platform MCU 8 is used to receive the simulation instructions from the host computer 3 and simulate the vehicle to issue control instructions through the simulation instructions, and control the ATS controller to respond through the control instructions to achieve vehicle environment simulation. The communication system is used for communication response between the host computer 3, the test platform MCU 8, and the ATS controller. The host computer 3 is arranged on the front panel of the test platform chassis 1, and the host computer 3 has a display screen. A sensor switching button 4 and a power switch 5 are also arranged on the test platform chassis 1. To facilitate the movement and deployment of the ATS controller integrated test platform, the bottom panel of the test platform chassis 1 is installed with lockable universal wheels, and at the same time, a handle is arranged on the side of the test platform chassis 1 for easy handling.

[0022] Among them, the monitoring includes: Data Acquisition and Display: The host computer 3 communicates with the MCU 8 of the test platform to collect in real time the response data of the ATS controller to analog commands, such as the actual rotation speed of the fan, the actual flow rate of the water pump, the temperature control feedback, etc. And display these data in an intuitive way on the display screen interface, usually in the form of charts (such as temperature change curves, fan speed line charts), digital readings, etc., to facilitate the testers to view the operating status of the ATS controller in real time. Use a real-time updated temperature curve to show the adjustment effect of the ATS controller on the analog temperature change, and the testers can judge the temperature control ability and response speed of the ATS controller from the curve trend.

[0023] Performance Evaluation: Based on the collected data, the host computer 3 calculates and evaluates the performance indicators of the ATS controller. For example, calculate the response time of the ATS controller, that is, the time interval from issuing a control command to the ATS controller making an actual response action (such as a change in the fan speed); evaluate the control accuracy by comparing the deviation between the actual control parameter value of the ATS controller (such as the actual adjusted coolant temperature) and the preset target value. Through these performance evaluations, the testers can judge whether the ATS controller meets the design requirements and whether its performance is stable and reliable.

[0024] Fault Monitoring: During the test process, the host computer 3 continuously monitors the operating data of the ATS controller and, based on the preset normal parameter range and fault characteristic model, promptly discovers possible faults. For example, if the fan speed continuously deviates from the command set value, or the temperature adjustment exceeds the reasonable range and cannot return to normal for a long time, the host computer 3 can judge that the ATS controller has a fault and issue an alarm to prompt the testers. At the same time, record and analyze the fault-related data to help the testers quickly locate the cause of the fault.

[0025] In some possible implementation schemes, the communication system includes RS485 communication and CAN bus protocol. RS485 communication is used for two-way communication between the host computer 3 and the MCU 8 of the test platform. The host computer 3 sends vehicle control commands or temperature parameters to the MCU 8 of the test platform, and the MCU 8 of the test platform feeds back the response data and status information of the ATS controller. The communication process uses a custom communication protocol, including a data header, instruction content, and check code, to ensure the accuracy and integrity of data transmission. During the data transmission process, the CRC cyclic redundancy check algorithm is used to check the data. If the check fails, the data is automatically resent to ensure the reliability of communication. The CAN bus protocol is used for the communication response between the MCU 8 of the test platform and the ATS controller. In CAN communication, different identifiers are set to distinguish different types of control commands and feedback information, and electrical isolation processing is performed on the CAN bus to improve the anti-interference ability of communication and ensure that the test environment of the ATS controller is close to the real vehicle control scenario.

[0026] In some possible embodiments, referring to Figure 3 as shown, the test platform chassis 1 further includes a power supply interface 9 for powering the entire test platform chassis 1.

[0027] In some possible embodiments, the control instructions include temperature control, water pump control, and fan speed control.

[0028] Temperature control Simulate the temperature sensor signal, signal generation principle: The test platform MCU 8 generates an analog voltage signal through the built-in digital-to-analog converter (DAC). This signal can simulate the voltage value output by the temperature sensor according to the temperature change. Since the output voltage of most temperature sensors has a specific linear or non-linear relationship with the temperature, the test platform MCU 8 pre-stores these relationship curves or calculation formulas. For example, for a common thermistor temperature sensor, its resistance value changes with temperature, and the resistance change can be converted into a voltage change through a Wheatstone bridge circuit. The test platform MCU 8 calculates the corresponding voltage value according to the target analog temperature value based on the characteristic formula of the thermistor and outputs this analog voltage signal through the DAC.

[0029] Signal transmission: The generated analog temperature signal is transmitted to the ATS controller, enabling it to receive a temperature signal similar to that from a real temperature sensor, thereby triggering the temperature control logic inside the ATS controller.

[0030] Receive temperature feedback and adjust, feedback data acquisition: The ATS controller responds according to the received analog temperature signal and sends the current temperature control status and related feedback data (such as the currently set target temperature, the actually detected temperature value, etc.) back to the test platform MCU 8 through the CAN bus protocol.

[0031] Adjust the analog signal: The test platform MCU 8 analyzes this feedback data. If it is found that the temperature control does not reach the expected target, for example, there is a deviation between the actual temperature and the target temperature, the test platform MCU 8 will adjust the output value of the analog temperature sensor signal according to the preset control algorithm (such as the PID control algorithm). If the actual temperature is higher than the target temperature, the test platform MCU 8 will appropriately reduce the analog temperature signal value to simulate the situation of temperature reduction, prompting the ATS controller to further take cooling measures, such as increasing the speed of the cooling fan or increasing the flow rate of the coolant pump.

[0032] Water pump control Send the water pump control instruction. Instruction encoding: The test platform MCU8 determines the control parameters of the water pump according to the test requirements and the simulated vehicle operating conditions, such as the rotational speed of the water pump, start / stop status, etc. These control parameters are encoded according to the CAN bus protocol to form a specific CAN message. For example, for water pump speed control, the target speed value is converted into the corresponding digital encoding and filled into the data field of the CAN message. At the same time, a specific identifier is assigned to this message to identify that this is a water pump control instruction, so that the ATS controller can correctly identify it.

[0033] Instruction sending: The encoded CAN message is sent out through the CAN bus protocol communication module of the test platform MCU8 and transmitted to the ATS controller via the CAN bus protocol.

[0034] Monitor the operating status of the water pump and receive the status feedback: After receiving the water pump control instruction, the ATS controller drives the water pump to perform the corresponding actions and feedbacks the operating status of the water pump (such as the actual rotational speed, whether it is operating normally, whether a fault occurs, etc.) to the test platform MCU8 through the CAN bus protocol.

[0035] Abnormal handling: The test platform MCU8 parses and judges the feedback water pump operating status data. If it detects that the water pump is operating abnormally, such as the deviation between the actual rotational speed and the instruction-set rotational speed is too large, or it receives a water pump fault alarm signal, the test platform MCU8 can take further measures. On the one hand, it can record the fault information for subsequent analysis; on the other hand, according to the preset fault handling strategy, the test platform MCU8 can send a new instruction to adjust the water pump operation, such as reducing the rotational speed or stopping the water pump operation, and feedback these operation information to the tester through the host computer 3.

[0036] Fan speed control Generate the fan speed control instruction and set the speed: Similar to the water pump control, the test platform MCU8 determines the target rotational speed of the fan according to the simulated vehicle operating conditions and test requirements. For example, under the high-load condition of the engine, it is necessary to increase the rotational speed of the cooling fan to enhance the heat dissipation effect. The test platform MCU8 calculates the corresponding fan rotational speed value.

[0037] Instruction transmission: The CAN message carrying the fan speed control information is sent to the ATS controller through the CAN bus protocol to instruct it to adjust the fan rotational speed.

[0038] Verify the fan speed adjustment: Obtain the rotational speed feedback: After the ATS controller performs the fan speed adjustment operation, it returns the actual rotational speed of the fan or the rotational speed-related feedback information (such as the pulse signal frequency detected by the fan rotational speed sensor, which can be converted into the actual rotational speed) to the test platform MCU8 through the CAN bus protocol.

[0039] Accuracy Verification: The test platform MCU8 compares the actual rotational speed of the received fan with the target rotational speed to verify the control accuracy of the ATS controller over the fan speed.

[0040] On the test platform chassis 1, there is a connection harness interface 7, which is used to connect the test platform MCU8 and the ATS controller.

[0041] An analog load circuit is set on the test platform chassis 1. There is also a resistor array with controllable power on the test platform chassis 1. The resistor array is used to simulate the thermal load characteristics of the engine and battery. By adjusting the resistance value and power of the resistor array, the heat generated under different working conditions can be simulated to test the response and control ability of the ATS controller to temperature changes. In addition, there are various sensor interfaces reserved on the test platform chassis 1, which can accurately collect various sensor signals and convert the sensor signals into digital signals that can be processed by the test platform MCU8, so that the test platform MCU8 can simulate vehicle control instructions according to the sensor data to achieve precise testing of the ATS controller.

[0042] In some possible implementation schemes, as shown in Figure 1 and Figure 3 shown, there is also a cooling fan 2 on the test platform chassis 1. The cooling fan 2 is arranged close to the test platform MCU8. The cooling fan 2 is used to discharge the heat dissipated by the test platform MCU8 from the test platform chassis 1. Multiple cooling fans 2 can be set to form a forced convection heat dissipation channel. In addition, heat sinks can be installed on the test platform MCU8 and the battery, and thermal conductive silicone grease can be applied on the heat sinks to quickly transfer the heat to the heat sinks, and then the heat is discharged from the test platform chassis 1 through the cooling fan 2. In addition, a temperature sensor can be set inside the test platform chassis 1 to monitor the temperature inside the test platform chassis 1 in real time. When the temperature exceeds the set threshold, the cooling fan 2 is automatically controlled to start and the rotational speed of the cooling fan 2 is adjusted to ensure that the working temperature of the test platform chassis 1 is within a suitable temperature range.

[0043] In some possible embodiments, a temperature sensor, a pressure sensor, and a flow sensor are also provided on the test platform chassis 1. The temperature sensor is used to simulate the temperature monitoring of the engine and battery in a real vehicle thermal management system, and transmits a simulated temperature signal to the ATS controller to trigger the temperature control logic of the ATS controller, such as adjusting the speed of the cooling fan 2, the flow rate of the water pump, etc., to maintain the components within a suitable temperature range. At the same time, the temperature data is real-time fed back to the test platform MCU 8, facilitating the test platform MCU 8 to analyze the temperature control effect of the ATS controller and evaluate its response ability and control accuracy to temperature changes. Simulating the temperature rise when the engine is running at high load, the temperature sensor signal prompts the ATS controller to increase the heat dissipation intensity. The test platform determines whether the temperature adjustment of the ATS controller is timely and accurate by monitoring the feedback temperature. An analog sensor 6 is also provided on the test platform chassis 1. The analog sensor 6 is used to simulate a real temperature sensor, thereby generating a signal similar to that of the real sensor, and accurately reproducing the state information of components such as the engine and battery under various complex working conditions such as startup, acceleration, deceleration, and different ambient temperatures; the pressure sensor is used to simulate the pressure conditions of the coolant pipeline and air conditioning system in a real vehicle thermal management system. In the coolant circulation system, the pressure sensor monitors the pipeline pressure to help the ATS controller determine whether the coolant flow is smooth and whether the water pump is working properly; the flow sensor is used to monitor the flow rate of the coolant and refrigerant. In the thermal management system, the coolant flow rate directly affects the heat dissipation effect. The flow sensor measures the coolant flow rate in real time and feeds the signal back to the ATS controller so that it can adjust the speed of the water pump according to the flow rate situation to ensure the heat dissipation efficiency.

[0044] Test steps: Test preparation: Connect the ATS controller to the test platform chassis 1 through the connection harness interface 7, turn on the power switch 5, start the host computer 3 and the test platform MCU 8, and perform system initialization. The operator selects the test working conditions on the display screen of the host computer 3, such as different working conditions like high engine load and fast battery charging, and sets the test parameters. The temperature range is set at -20°C - 120°C, the initial speed of the water pump is 1000 rpm, and the initial duty cycle of the fan is 50%.

[0045] Instruction transmission: The host computer 3 generates vehicle control instructions according to the test parameters set by the operator and the selected test working conditions through the simulated vehicle control environment module (for example, in the high engine load working condition, generate instructions to increase the speed of the cooling water pump and increase the power of the cooling fan), and sends the instructions to the test platform MCU 8 through the RS485 communication interface.

[0046] Instruction parsing and forwarding: After the test platform MCU8 receives the instruction from the host computer 3, the RS485 communication processing module first performs CRC verification and decryption processing on the instruction. If the verification passes and the decryption is successful, the instruction is passed to the CAN bus protocol for instruction parsing and forwarding, and is converted into a control instruction suitable for the ATS controller to receive according to the CAN bus protocol, such as (converting the water pump speed instruction into the corresponding identifier and data content on the CAN bus protocol and sending it to the ATS controller through the CAN bus protocol). If the instruction verification fails or the decryption fails, the RS485 communication processing module sends an error feedback to the host computer 3, prompting the operator to resend the instruction.

[0047] Real-time response and feedback: The ATS controller makes responses according to the received CAN instructions, such as adjusting the water pump speed, changing the fan duty cycle, etc., and monitors the temperature change in real time. At the same time, the temperature change and the PWM signal output by the fan operation are returned to the test platform MCU8 through the CAN bus protocol. The CAN bus protocol of the test platform MCU8 parses the received data, extracts useful information and passes it to the RS485 communication, and then the RS485 communication transmits the data to the host computer 3 in real time.

[0048] This specific embodiment is only an explanation of the invention, and it is not a limitation of the invention. Those skilled in the art can make modifications to this embodiment without creative contributions according to needs after reading this specification, but as long as it is within the protection scope of the invention, it is protected by the patent law.

Claims

1. An ATS controller integrated test platform, comprising a test platform chassis (1), characterized in that: The test platform chassis (1) comprises: A host computer (3), the host computer (3) is used to simulate the vehicle operation environment and monitor; A test platform MCU (8), the test platform MCU (8) is used to receive simulation instructions from the host computer (3), and simulate the whole vehicle issuing control instructions through the simulation instructions, and control the ATS controller to respond through the control instructions, thereby realizing whole vehicle environment simulation; A communication system, the communication system is used for communication response between the host computer (3), the test platform MCU (8) and the ATS controller.

2. The ATS controller integrated test platform according to claim 1, characterized in that: The communication system includes RS485 communication and CAN bus protocol; The RS485 communication is used for two-way communication between the host computer (3) and the test platform MCU (8); The CAN bus protocol is used for communication response between the test platform MCU (8) and the ATS controller.

3. The ATS controller integrated test platform according to claim 1, characterized in that: The test platform chassis (1) further comprises a power supply interface (9), and the power supply interface (9) is used to supply power to the entire test platform chassis (1).

4. The ATS controller integrated test platform according to claim 3, characterized in that: The control instructions include temperature control, water pump control and fan speed control.

5. The ATS controller integrated test platform according to claim 4, characterized in that: The test platform chassis (1) is provided with a connection harness interface (7), and the connection harness interface (7) is used to connect the test platform MCU (8) and the ATS controller.

6. The ATS controller integrated test platform according to claim 5, characterized in that: The test platform chassis (1) is also provided with a power-controllable resistor array, which is used to simulate the thermal load characteristics of the engine and the battery. By adjusting the resistance value and power of the resistor array, the heat generated under different working conditions can be simulated to test the response and control ability of the ATS controller to temperature changes.

7. The ATS controller integrated test platform according to claim 6, characterized in that: The test platform chassis (1) is also provided with a cooling fan (2), the cooling fan (2) being arranged close to the test platform MCU (8), and the cooling fan (2) being used to discharge heat emitted by the test platform MCU (8) out of the test platform chassis (1).

8. The ATS controller integrated test platform according to claim 7, characterized in that: The test platform chassis (1) is also provided with a temperature sensor, a pressure sensor and a flow sensor, wherein the temperature sensor is used to simulate the temperature monitoring of the engine and the battery in the thermal management system of a real vehicle, and to generate a simulated temperature signal which is transmitted to the ATS controller, thereby triggering the temperature control logic of the ATS controller; The pressure sensor is used to simulate the pressure conditions of the coolant pipeline and air conditioning system in the thermal management system of a real vehicle; The flow sensor is used to monitor the flow of coolant and refrigerant.

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