CN211121990U - Testing device and testing bench of vehicle stability control system - Google Patents
Testing device and testing bench of vehicle stability control system Download PDFInfo
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- CN211121990U CN211121990U CN201921310543.8U CN201921310543U CN211121990U CN 211121990 U CN211121990 U CN 211121990U CN 201921310543 U CN201921310543 U CN 201921310543U CN 211121990 U CN211121990 U CN 211121990U
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Abstract
The present disclosure relates to a test apparatus and a test bench of a vehicle stability control system. The present disclosure is directed to solving at least one problem in the prior art. A testing device of a vehicle stability control system, the vehicle stability control system comprises an electromagnetic valve and a direct current motor, the testing device comprises: the controller is used for acquiring a test instruction for testing the vehicle stability control system and generating a control signal based on the test instruction; and a driver generating a driving signal for driving the vehicle stability control system according to the control signal, the controller being configured to: in response to acquiring a first test instruction for testing the solenoid valve, generating a first control signal to control a driver to generate a first driving signal for switching on the solenoid valve; and generating a second control signal to control the driver to generate a second driving signal for rotating the direct current motor in response to acquiring a second test instruction for testing the direct current motor. One or more embodiments of the present disclosure can realize a miniaturized and low-cost test apparatus.
Description
Technical Field
The present disclosure relates to the field of vehicles, and more particularly, to a testing apparatus for a vehicle stability control system.
Background
The vehicle stability control system is a vehicle active safety system and can improve the vehicle operation safety coefficient and the driving convenience. When emergencies such as emergency turning, emergency acceleration and emergency braking occur, the vehicle with the vehicle stabilizing system can quickly sense and automatically take corresponding braking measures, such as appropriate braking action on wheels through an oil pressure control system, reduction of output of an engine in a mode of reducing oil injection quantity and delaying ignition, and the like, so as to maintain the stability of a vehicle body.
Special detection equipment is generally adopted to test the functions of the vehicle stability control system. The detection device simulates, for example, an actual running process of the vehicle, detects a braking condition of a wheel, a control condition of an engine, and the like under the control of the vehicle stability control system, and thereby determines whether the function of the vehicle stability control system is normal.
SUMMERY OF THE UTILITY MODEL
The present disclosure provides a testing device and a testing bench for a vehicle stability control system, which aim to solve at least one problem existing in the prior art.
According to one aspect of the present disclosure, there is provided a testing apparatus of a vehicle stability control system including a solenoid valve and a direct current motor. The testing device can comprise a controller, a controller and a controller, wherein the controller is used for acquiring a testing instruction for testing the vehicle stability control system and generating a control signal based on the testing instruction; and a driver generating a driving signal for driving the vehicle stability control system according to the control signal generated by the controller. The controller may be configured to: in response to acquiring a first test instruction for testing the solenoid valve, generating a first control signal to control the driver to generate a first driving signal for switching on the solenoid valve; and generating a second control signal in response to acquiring a second test instruction for testing the direct current motor so as to control the driver to generate a second driving signal for rotating the direct current motor.
According to some embodiments, the driver comprises a solenoid, and the first control signal is used to energize the solenoid to generate a first drive signal that turns on the solenoid.
According to some embodiments, the controller includes a solenoid valve control unit having a switching element, and the controller turns on the switching element of the solenoid valve control unit to generate a first control signal to energize a solenoid of the driver in response to acquiring the first test command.
According to some embodiments, the driver includes a through circuit for connecting the controller with the dc motor, and the second control signal is input to the dc motor as a second drive signal for rotating the dc motor via the through circuit.
According to some embodiments, the controller includes a dc motor control unit, and in response to obtaining the second test instruction, the controller causes the dc motor control unit to generate a second control signal including a current control signal for controlling a rotation direction of the dc motor and a voltage control signal for controlling a rotation speed of the dc motor.
According to some embodiments, the driver comprises a first interface for driving the solenoid valve and a second interface for driving the dc motor, the first and second interfaces being connected to a solenoid valve interface and a dc motor interface of the vehicle stability control system, respectively.
According to some embodiments, the controller comprises a control panel comprising a key for acquiring the first test instruction and a knob and a three-phase switch for acquiring the second test instruction.
According to some embodiments, the vehicle stability control system includes a plurality of solenoid valves, the control panel includes a plurality of keys, each key is used for acquiring one first test instruction for testing a corresponding solenoid valve in the plurality of solenoid valves, and the controller generates a first control signal corresponding to the first test instruction in response to acquiring the one first test instruction, so as to control the driver to generate a first driving signal for turning on the corresponding solenoid valve in the plurality of solenoid valves.
According to some embodiments, the second control signal includes a current control signal and a voltage control signal, and the controller determines the current control signal according to a connection state of the three-phase switch and determines the voltage control signal according to a rotation amount of the knob.
According to another aspect of the present disclosure, there is provided a test rig for mounting a test device according to the present disclosure for testing a vehicle stability control system. The test bench may include: a fixing part for fixing the controller; and the driver is connected with an electromagnetic valve interface and a direct current motor interface of the vehicle stability control system and is coupled with the controller.
According to some embodiments, the test rig further comprises a slide via which the vehicle stability control system is positioned to the support body.
According to some embodiments, the support body comprises bolt holes matching the vehicle stability control system, which is fixed to the support body by means of bolting.
According to one or more embodiments of the present disclosure, one advantageous effect that can be achieved is: the testing device disclosed by the invention is used for testing the hardware part of the vehicle stability control system to determine the quality of the vehicle stability control system, the testing period is short, and the miniaturization and low cost of the testing device can be realized.
Drawings
The present disclosure will now be described in the following detailed description with reference to the figures, in which like reference numerals represent the same or similar components throughout the figures. It is understood that the drawings are not necessarily to scale and that the drawings are merely illustrative of exemplary embodiments of the disclosure and should not be considered as limiting the scope of the disclosure. Wherein:
FIG. 1 shows a schematic diagram of a vehicle stability control system, (a) is a perspective view of the vehicle stability control system, and (b) is a top view of the vehicle stability control system;
fig. 2 shows an exemplary configuration block diagram of a test device of a vehicle stability control system according to an embodiment of the present disclosure;
fig. 3 shows an exemplary configuration block diagram of a test device of a vehicle stability control system according to another embodiment of the present disclosure;
FIG. 4 shows a schematic diagram of a control panel of a controller of a testing device according to an embodiment of the present disclosure;
FIG. 5 illustrates an exemplary flow chart of a testing method of a testing device of a vehicle stability control system according to an embodiment of the present disclosure;
FIG. 6 shows a schematic view of a test rig according to an embodiment of the present disclosure.
Detailed Description
Various exemplary embodiments of the present disclosure will be described in detail below with reference to the accompanying drawings. It is to be understood that the description of various exemplary embodiments is illustrative only and is not intended to limit the technology of the present disclosure in any way. The relative arrangement of components and steps, expressions, and values in the exemplary embodiments do not limit the scope of the present disclosure unless specifically stated otherwise.
The terminology used herein is for the purpose of describing particular example embodiments only and is not intended to be limiting of the disclosure. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and/or "comprising," when used herein, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. Furthermore, in the description of the present disclosure, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or order. Further, in the description of the present disclosure, "a plurality" means two or more unless otherwise specified.
The Vehicle Stability Control System related to the present disclosure is a Vehicle Stability Control System in a broad sense, and includes, but is not limited to, Dynamic Stability Control (DSC), Electronic Stability program (Electronic Stability program), Vehicle Stability Assist (VSA), Vehicle Stability Control (VSC), Antilock Brake System (ABS), and the like. In the following description, DSC will be exemplified, but it should be understood that embodiments according to the present disclosure can also be applied to other vehicle stability control systems.
The DSC may include a solenoid valve and a dc motor. The solenoid valve may be used to control the oil inlet passage and the oil outlet passage to brake the wheels of the vehicle. The dc motor may be used to control circuit oil pressure to control the output of the engine. For example, a dc motor may be used to increase the circuit oil pressure, and rotation of the dc motor will cause the plunger pump to move, thereby continuously increasing the pressure of the oil in the oil circuit.
Fig. 1 illustrates a DSC100 including 12 solenoid valves and 1 dc motor, where (a) is a perspective view of the DSC100, and (b) is a top view of the DSC 100. In the DSC100, 12 solenoid valves are used to control 2 oil inlet passages and 4 oil outlet passages, each passage is controlled by 2 solenoid valves, and the 4 oil outlet passages correspond to brakes of 4 wheels of the vehicle, respectively.
As shown in fig. 1 (b), the DSC100 includes 12 solenoid valve interfaces 102 corresponding to the 12 solenoid valves, respectively, and 1 dc motor interface 104 corresponding to the 1 dc motor. The hardware drive (not shown) of the DSC100 is connected to the solenoid valve interface 102 and the dc motor interface 104 of the DSC100, so that the vehicle stability control function of the DSC100 can be realized.
It should be understood that fig. 1 is merely an example, and embodiments according to the present disclosure may also be applied to a vehicle stability control system having other different numbers of solenoid valves and dc motors.
Before or during the use of DSCs, the DSCs need to be tested to determine their quality. The inventors of the present disclosure know the way to test the function of DSCs with dedicated detection equipment. The detection device simulates, for example, an actual running process of the vehicle, detects a braking condition of a wheel, a control condition of an engine, and the like under the control of the vehicle stability control system, and thereby determines whether the function of the DSC is normal. However, since it is necessary to simulate the actual running process of the vehicle and detect the wheel and the engine, such a dedicated detection device is generally large, and has high test cost and long test period.
The inventor of the present disclosure has noted that a DSC generally includes hardware parts such as an electromagnetic valve and a dc motor, and by testing the hardware parts of the DSC, the quality of the hardware parts of the DSC can be quickly determined. Accordingly, the present disclosure provides a test apparatus of a DSC, which does not test functions of the DSC, but tests hardware parts of the DSC, has a short test period, and can realize miniaturization and low cost of the test apparatus.
A test apparatus for testing a DSC according to an exemplary embodiment of the present disclosure is described in detail below with reference to fig. 2 to 4.
Fig. 2 shows a block diagram of an exemplary configuration of a test apparatus 200 according to an embodiment of the present disclosure, the test apparatus 200 may be used to test a DSC 212. The DSC212 shown in fig. 2 may correspond, for example, to the DSC100 in fig. 1.
As shown in fig. 2, the test device 200 may include a controller 204 and a driver 208. The controller 204 acquires a test instruction 202 to test the DSC212 and generates a control signal 206 based on the test instruction 202. The driver 208 generates a drive signal 210 for driving the DSC212 in accordance with the control signal 206 generated by the controller 204.
In some embodiments, the test instructions 202 may include a first test instruction to test a solenoid valve of the DSC212 and a second test instruction to test a dc motor of the DSC 212. In addition, in the case where the DSC212 includes a plurality of solenoid valves, the test instruction 202 may include a plurality of first test instructions for testing the plurality of solenoid valves, respectively.
In some embodiments, the controller 204 may be configured to generate a first control signal to control the driver 208 to generate a first drive signal to turn on the solenoid valve in response to obtaining the first test instruction. In the case where the DSC212 includes a plurality of solenoid valves, the controller 204 may generate a plurality of first control signals corresponding to a plurality of first test commands for testing the plurality of solenoid valves, respectively.
When the solenoid valve is switched on, a 'snap' sound is generated due to metal collision. Thus, in some embodiments, it may be determined whether the solenoid valve is on by listening to the sound of the DSC 212. For example, in the case where the first test instruction is acquired, if an "snap" sound from the DSC212 is heard, it may be determined that the solenoid valve of the DSC212 is turned on, i.e., the solenoid valve is good; if no "snap" sound from the DSC212 is heard, it may be determined that the solenoid valve of the DSC212 is not ON, i.e., the solenoid valve has been broken. In this way, it is possible to easily determine whether or not the solenoid valve of the DSC212 is good without an external sensor or other determination circuit.
In some embodiments, the controller 204 may be configured to generate a second control signal to control the driver 208 to generate a second drive signal to rotate the dc motor in response to obtaining the second test instruction.
When the direct current motor rotates, corresponding rotating sound is generated. Thus, in some embodiments, it may be determined whether the dc motor is on by listening to the sound of the DSC 212. For example, in the case where the second test instruction is acquired, if the rotation sound of the dc motor from the DSC212 is monitored, it can be determined that the dc motor of the DSC212 is rotating, that is, the dc motor is good; if the rotation sound of the dc motor of the DSC212 is not monitored, it can be determined that the dc motor of the DSC212 is not rotating, i.e., the dc motor is damaged. In this way, it is possible to easily determine whether or not the dc motor of the DSC212 is good without an external sensor or other determination circuit.
In some embodiments, a current sensor may also be connected to a dc motor interface (e.g., the dc motor interface 104 in fig. 1 (b)) of the DSC212 to obtain a current flowing through the dc motor, and determine whether the dc motor is good or not according to the magnitude of the current value. For example, in the case where the second test instruction is acquired, if the current value measured by the current sensor is not 0, it is determined that the dc motor of the DSC212 is good; if the current value is 0, it is determined that the dc motor of the DSC212 has been damaged.
The controller 204 according to exemplary embodiments of the present disclosure may take many forms, including, for example, a computer-based system, a microprocessor-based system, a single-chip microcomputer-based system, a microcontroller, an Electronic Control Module (ECM), an Electronic Control Unit (ECU), or any other suitable control type circuit or system. The controller may also include one or more Application Specific Integrated Circuits (ASICs), Field Programmable Gate Arrays (FPGAs), and logic circuitry configured to enable the controller to implement functionality in accordance with various exemplary embodiments of the present disclosure.
In an exemplary embodiment, the controller 204 may include one or more of the following components (not shown): a memory; a processing component, such as a microcontroller or microprocessor, operatively coupled with the memory; a storage device; an input output (I/O) interface; and a communication component.
The processing component may be configured to receive the test instructions and generate control signals that are sent over, for example, the I/O interface to control the driver to generate the corresponding drive signals. In operation, the processing component may execute computer instructions stored in the memory and/or storage device.
The memory and storage devices each may comprise any suitable type of storage medium. The memory may include, for example, a non-transitory computer readable storage medium containing instructions of an application or method executable by the processing component. For example, the non-transitory computer readable storage medium may be a Read Only Memory (ROM), a Random Access Memory (RAM), a flash memory, a memory chip (or integrated circuit), or the like. The storage devices may include volatile or non-volatile, magnetic, semiconductor, optical, removable, non-removable, or other types of storage devices or computer-readable media to provide additional storage space for the controller 204.
The I/O interface may include one or more digital and/or analog communication devices that allow the controller 204 to communicate with other systems and devices, such as the driver 208. For example, the I/O interface may communicate control signals generated by the controller 204 to the driver 208.
The communications component may be configured to facilitate wired or wireless communications between the controller 204 and other devices (e.g., user interfaces). for example, the communications component may facilitate the controller 204 in obtaining test instructions 202 for testing the DSC 212. the communications component may access a wireless network based on one or more communication standards (e.g., WiFi, L TE, 2G, 3G, 4G, 5G, etc.).
In the testing device of the present disclosure, the controller acquires a test instruction, generates a control signal based on the test instruction, so that the driver generates a drive signal to drive the solenoid valve and the dc motor of the DSC, thereby being able to determine whether the hardware portion of the DSC is good. The testing device disclosed by the invention does not test the functions of the DSC, so that the actual running process of the vehicle does not need to be simulated, the braking condition of wheels of the vehicle under the control of the DSC, the control condition of an engine and the like are detected, the testing period is short, and the miniaturization and the low cost of the testing device can be realized.
The testing device according to the present disclosure is suitable for rapid, mass screening of the quality of DSCs.
Specifically, when a vehicle is assembled in a car factory, screening for good or bad DSC is not generally performed, and DSC parts from manufacturers are considered to be good. However, during transportation of the DSC from the part manufacturer to the car shop, damage to the hardware components of the DSC may occur, and such damage can generally only be discovered and gradually troubleshooted when the entire car is tested after the entire car is completely assembled. Since the test cycle of the test apparatus of the present disclosure is short, the DSC can be tested before the vehicle is assembled, and the vehicle can be assembled only when the DSC is confirmed to be good. In this way, troubleshooting time can be reduced.
On the other hand, when a DSC in a certain vehicle after completion of assembly is found to have a failure, it tends to be considered that a plurality of DSCs of the same lot may have similar failures. Accordingly, a plurality of DSCs may be batch screened for faults using the testing device of the present disclosure. Through the mode, the possibility of faults after the whole vehicle is assembled can be reduced, and the production efficiency is improved.
In some embodiments, the driver 208 of the testing device 200 according to embodiments of the present disclosure may include a first interface for driving a solenoid valve and a second interface for driving a dc motor, which are respectively connected with a solenoid valve interface (e.g., the solenoid valve interface 102 in (b) of fig. 1) and a dc motor interface (e.g., the dc motor interface 104 in (b) of fig. 1) of the DSC.
In this way, the hardware interfaces (the first and second interfaces of the driver 208) of the testing device 200 of the present disclosure may be adapted to the hardware interfaces of the DSC itself. Therefore, when the DSC is tested, the DSC can be tested by removing the hardware drive of the DSC itself and connecting the corresponding interface of the driver 208 to the solenoid valve interface and the dc motor interface of the DSC, without performing other structural changes and/or adding other components to the DSC.
The test apparatus according to the present embodiment can be used as a portable test apparatus for directly performing a test on a DSC mounted in a vehicle. In particular, the DSC may also be damaged after the complete vehicle assembly (e.g., after the vehicle is shipped). In this case, the portable test apparatus may be carried into a vehicle to perform real-time on-line testing of a DSC installed in the vehicle. Specifically, the hardware drive of the DSC itself originally connected to the DSC may be removed, and the corresponding interface of the driver of the testing apparatus of the present disclosure may be connected to the solenoid valve interface and the dc motor interface of the DSC, so as to perform the DSC test.
According to the portable testing device disclosed by the invention, the DSC is not required to be detached from the vehicle, and the DSC is detected as a separated part by using special detection equipment through a series of treatments such as exhausting and oil discharging, so that the real-vehicle online detection can be realized, and the troubleshooting efficiency can be improved.
Fig. 3 shows a block diagram of an exemplary configuration of a testing apparatus 300 according to an embodiment of the present disclosure, the testing apparatus 300 may be used to test a DSC 312. The test apparatus 300, the controller 304, the driver 308, and the DSC312 in fig. 3 may correspond to the test apparatus 200, the controller 204, the driver 208, and the DSC212 in fig. 2, respectively.
In some embodiments, the driver 308 may include a solenoid 3081 for generating a first drive signal 3101 that drives the solenoid valve 3121 of the DSC312 in accordance with the first control signal 3061 generated by the controller 304.
In some embodiments, the solenoid 3081 may be connected with the solenoid valve 3121 via the solenoid valve interface of the DSC 312. Solenoid 3081 may be energized under the control of first control signal 3061, generating a first drive signal 3101 that turns solenoid valve 3121 on.
In some embodiments, the controller 304 may include a solenoid control unit 304 to generate the first control signal 3061. The solenoid valve control unit 3041 may include a switching element. The switching element may be, for example, a MOSFET (metal oxide semiconductor field effect transistor), an IGBT (insulated gate bipolar transistor), or other element having a switching function. In response to acquiring the first test instruction 3021, the controller 304 turns on the switching element of the solenoid control unit 3041 to generate a first control signal 3061 that energizes the solenoid 3081 of the driver 308.
In some embodiments, the solenoid valve control unit 3041 may be directly connected with the solenoid coil 3081 via a wire. In the case where the controller 304 acquires the first test command 3021, an electric signal is generated as a first control signal 3061 by the on-state of the switching element of the solenoid valve control unit 3041, and is output to the electromagnetic coil 3081 via the wire.
In some embodiments, the driver 308 may include a pass-through circuit 3082 for generating a second drive signal 3102 that drives the dc motor 3122 of the DSC312 in accordance with the second control signal 3062 generated by the controller 304.
In some embodiments, the pass-through circuit 3082 may be connected with the dc motor 3122 via the dc motor interface of the DSC 312. The second control signal 3062 may be input to the dc motor 3122 via a through circuit 3082 as a second drive signal 3102 that rotates the dc motor 3122.
The through circuit 3082 may be constituted by a wire (e.g., a high-current copper post), so that the dc motor control unit 3042 of the controller 308 is connected with the dc motor 3122 of the DSC312 via the through circuit 3082.
In some embodiments, the controller 304 may include a dc motor control unit 3042 to generate a second control signal 3062. The controller 304 may, in response to obtaining the second test instruction 3022, cause the dc motor control unit 3042 to generate a second control signal 3062 comprising a current control signal and a voltage control signal.
The current control signal may be used to control the direction of rotation of the dc motor 3122. In some embodiments, when the controller 304 obtains the second test instruction 3022 for testing the forward rotation of the dc motor 3122, the dc motor control unit 3042 generates a forward current control signal, which is input to the dc motor 3122 as the second drive signal 3102 via the through circuit 3082 to cause the dc motor 3122 to rotate in the forward direction. Similarly, when the controller 304 acquires the second test instruction 3022 to test the reverse rotation of the dc motor 3122, the dc motor control unit 3042 generates a reverse current control signal, which is input to the dc motor 3122 as the second drive signal 3102 via the through circuit 3082 to reverse the dc motor 3122.
In some embodiments, a current sensor may be external to the dc motor 3122 to determine whether the dc motor 3122 is good by comparing the direction of current of the dc motor measured by the current sensor to the information for forward or reverse rotation indicated by the second test instructions 3022.
In addition, the voltage control signal may be used to control the rotational speed of the dc motor 3122. Generally, the rotation speed of the dc motor can be adjusted by the magnitude of the voltage input to the dc motor, and the larger the voltage is, the larger the rotation speed of the dc motor is; conversely, the smaller the rotational speed of the dc motor. Therefore, in some embodiments, when the controller 304 acquires the second test instruction 3022 testing the rotational speed of the dc motor 3122, the dc motor control unit 3042 generates a corresponding second control signal 3062, which is input to the dc motor 3122 as the second drive signal 3102 via the through circuit 3082, in accordance with the rotational speed indicated by the second test instruction 3022, to cause the dc motor 3122 to rotate. By determining whether the rotation speed of the dc motor 3122 matches the rotation speed indicated by the acquired second test command 3022, it is possible to determine whether the dc motor 3122 is good.
In some embodiments, a voltage sensor may be externally connected to the dc motor 3122, and by comparing the magnitude of the voltage of the dc motor measured by the voltage sensor with the information of the rotation speed indicated by the second test command 3022, it may be determined whether the dc motor 3122 is good. In addition, the second test command 3022 may also be dynamically adjusted to determine whether the dc motor 3122 is good by determining whether the change in voltage measured by the voltage sensor matches the change in the second test command 3022.
Generally, the greater the rotational speed of the dc motor, the greater the generated rotational sound. Therefore, in some embodiments, the second test instruction 3022 may be dynamically adjusted and it may be determined whether the change in the rotating sound of the dc motor 3122 matches the change in the second test instruction 3022 to determine whether the dc motor 3122 is good.
In some embodiments, the controller 304 may include a power management unit (not shown) for powering the solenoid control unit 3041 and the dc motor control unit 3042 of the controller 304. For example, a 220V household ac power supply may be externally connected to the power management unit, the power management unit transforms and rectifies the 220V ac power, and the constant voltage dc power converted into 5V1A is supplied to the switching element (e.g., MOSFET) of the solenoid valve control unit 3041, and the constant voltage dc power converted into 12V30A is supplied to the dc motor control unit 3042. In this way, the testing device disclosed by the invention can work under the power supply of a 220V household alternating current power supply without special power supply, and can realize plug and play, thereby improving the convenience of testing the DSC.
It should be understood that the power management unit of the present disclosure may also operate under other power conditions (e.g., 380V ac, etc.). The power management unit of the present disclosure may be in the form of any circuit that can provide power management functions such as voltage transformation and rectification, and the specific circuit configuration of the power management unit is not limited in the present disclosure.
In some embodiments, the controller of the test device according to the present disclosure may include a control panel for acquiring test instructions, as described in detail below with reference to fig. 4.
Fig. 4 illustrates a schematic diagram of a control panel 400 of a controller of a test device according to the present disclosure.
As shown in fig. 4, the control panel 400 may include a button 406 for testing the solenoid valve of the DSC. Fig. 4 illustrates 12 buttons 406, which respectively correspond to 12 electromagnetic valves of the DSC, and are respectively used for acquiring test instructions for testing the corresponding electromagnetic valves of the DSC to test whether each electromagnetic valve in the DSC is good or not.
In some embodiments, in response to 1 key 406 being pressed, the controller 304 generates a respective first control signal 3061 to control the driver 308 to generate a first drive signal 3101 that turns on a corresponding solenoid valve of the 12 solenoid valves of the DSC 312. According to the embodiments of the present disclosure, it is possible to determine whether any of the solenoid valves in the DSC is good.
In some embodiments, 1 key 406 may correspond to 1 pull-up resistor. When 1 key 406 is pressed, the corresponding pull-up resistor generates a high potential for turning on the corresponding switching element of the solenoid valve control unit 3041 to generate the first control signal 3061. The first control signal 3061 energizes the solenoid 3081, which generates a first drive signal 3101 to drive the respective solenoid valve.
As described above, in some embodiments, the DSC's sound may be heard when key 406 is pressed to determine if the corresponding solenoid valve is good. If an "snap" sound from the DSC is monitored when the button 406 is pressed, it can be determined that the corresponding solenoid valve of the DSC is good; otherwise, it is determined that the solenoid valve of the DSC has been damaged. In other embodiments, a voltage sensor may be connected to the switching element in the solenoid valve control unit 3041, and a voltage change in the voltage sensor is observed when the key 406 is pressed. If the voltage in the voltage sensor changes when the key 406 is pressed, it indicates that the solenoid valve of the DSC corresponding to the key 406 is turned on, thereby determining that the solenoid valve is good; on the contrary, if the voltage in the voltage sensor is not changed when the button 406 is pressed, it is determined that the solenoid valve corresponding to the button 406 is damaged.
As shown in fig. 4, the control panel 400 may further include a three-phase switch 404, and each phase of the three-phase switch 404 is used to test the forward rotation, the reverse rotation, and the stop of the dc motor, respectively.
In some embodiments, with the three-phase switch turned on in the forward direction, the controller 304 generates a forward current control signal that is input to the dc motor 3122 via the pass circuit 3082 to cause the dc motor 3122 to rotate in the forward direction. On the other hand, when the three-phase switch is turned on in the reverse direction, the controller 304 generates a reverse current control signal, and inputs the signal to the dc motor 3122 via the through circuit 3082 to reverse the dc motor 3122. When the three-phase switch is off, the controller 304 sets the current control signal to 0 to stop the rotation of the dc motor 3122.
In some embodiments, a current sensor may be connected to the dc motor interface of the dc motor 3122, and the direction of the current of the dc motor 3122 may be detected by the current sensor while adjusting the connection state (forward on, reverse on, off) of the three-phase switch 404. By determining whether the current direction of the dc motor 3122 matches the connection state of the three-phase switch 404, it can be determined whether the dc motor 3122 is good.
In some embodiments, the three connection states of the three-phase switch 404 may be converted into digital values by analog-to-digital conversion circuits. For example, the forward turn-on of the three-phase switch 404 corresponds to "001", the reverse turn-on corresponds to "010", and the turn-off corresponds to "100". A digital value corresponding to the connection state of the three-phase switch 404 is input to the dc motor control unit 3042, and a current control signal corresponding to the connection state of the three-phase switch can be generated. For example, when "001" is input to the dc motor control unit 3042, a forward current control signal is generated, when "010" is input to the dc motor control unit 3042, a reverse current control signal is generated, and when "100" is input to the dc motor control unit 3042, the current control signal is set to 0. The current control signal thus generated may be input to the dc motor 3122 via the through circuit 3102 to rotate the dc motor 3122 in the forward direction, the reverse direction, or stop.
As shown in fig. 4, the control panel 400 may further include a knob 402, and the rotation amount of the knob 402 is used for testing the rotation speed of the dc motor 3122.
In some embodiments, the controller 304 generates a voltage control signal of a corresponding magnitude based on the amount of rotation of the knob 402. For example, the greater the amount of rotation of the knob 402, the greater the voltage control signal; the smaller the amount of rotation of the knob 402, the smaller the voltage control signal. Accordingly, by adjusting the amount of rotation of the knob 406, the magnitude of the voltage input to the dc motor 3122 can be adjusted, and the rotational speed of the dc motor 3122 can be adjusted.
In some embodiments, knob 406 may be implemented by a variable resistor. By adjusting the amount of rotation of the knob 406, the resistance value of the variable resistor changes, and thus the voltage applied to the variable resistor also changes. Therefore, the voltage control signal may be generated according to the magnitude of the voltage value of the variable resistor.
In some embodiments, by monitoring the change of the rotation sound of the dc motor 3122 while adjusting the rotation amount of the knob 402, it may be determined whether the rotation of the dc motor 3122 matches the rotation of the knob 402 to determine whether the dc motor 3122 is good. In some embodiments, a voltage sensor may be connected to the dc motor interface of the dc motor 3122, and the voltage sensor may detect the magnitude of the voltage of the dc motor 3122 while adjusting the rotation amount of the knob 402, and determine whether the voltage change of the dc motor 3122 matches the rotation amount of the knob 402, to determine whether the dc motor 3122 is good.
In some embodiments, the resistance value (analog value) corresponding to the rotation amount of the knob 402 may be converted into a digital value (e.g., 1024 values of 0 to 1023) by an analog-to-digital conversion circuit. The digital value is converted into a Pulse Width Modulation (PWM) wave via PWM. The duty ratio of the PWM wave is 0-100%, and the PWM wave linearly corresponds to 1024 digital resistance values of 0-1023. The PWM wave is input to the dc motor control unit 3042, and a voltage control signal (voltage value, for example, 0 to 12V) linearly corresponding to the duty ratio of the PWM wave can be generated. Accordingly, by adjusting the rotation amount of the knob 402, the voltage value input to the dc motor 3122 can be adjusted to 0 to 12V, and the rotation speed of the dc motor 3122 can be adjusted.
It will be appreciated that the analog to digital conversion circuitry, PWM conversion described above may be implemented by the processing components of the controller described above. In addition, the dc motor control unit 3042 that implements each function described above may be implemented by using an existing dc motor controller, which is not limited by this disclosure.
It should be understood that the control panel of fig. 4 is only an example, and the test instructions from the user may also be obtained through the touch screen and the display interface on the touch screen. In addition, the wired or wireless connection between the controller and the terminal device (e.g., a smartphone, a mobile PC, a Personal Digital Assistant (PDA), a wearable device (e.g., a smart watch), etc.) may also be aided by the communication component of the controller described above, through which the test instructions are input to the controller.
Referring now to FIG. 5, a method 500 for testing a test apparatus according to an embodiment of the present disclosure is illustrated. For example, the test method 500 may be implemented by the test apparatus 200, 300 as described above.
As shown in fig. 5, in step S502, the controller (e.g., the controller 204 of the test apparatus 200, the controller 304 of the test apparatus 300) generates a first control signal to control the driver (e.g., the driver 208 of the test apparatus 200, the driver 308 of the test apparatus 300) to generate a first driving signal to turn on the solenoid valve in response to acquiring a first test command to test the solenoid valve.
In step S504, the controller (e.g., the controller 204 of the testing apparatus 200, the controller 304 of the testing apparatus 300) generates a second control signal to control the driver (e.g., the driver 208 of the testing apparatus 200, the driver 308 of the testing apparatus 300) to generate a second driving signal for rotating the dc motor in response to acquiring a second test instruction for testing the dc motor.
In the testing method 500 of the present disclosure, the controller acquires a test instruction, generates a control signal based on the test instruction, so as to cause the driver to generate a driving signal to drive the solenoid valve and the dc motor of the DSC, thereby being able to determine whether the hardware portion of the DSC is good. The testing method 500 of the present disclosure does not need to simulate the actual driving process of the vehicle, detect the braking condition of the wheels and the control condition of the engine of the vehicle under the control of the DSC, etc., because the function of the DSC is not tested, has a short testing period, and can realize the miniaturization and low cost of the testing device.
In some embodiments, the driver of the test device may include a first interface for driving the solenoid valve and a second interface for driving the dc motor. The testing method 500 may further include: the first port and the second port are connected to a solenoid valve port (e.g., a solenoid valve port 102 in fig. 1 (b)) and a dc motor port (e.g., a solenoid valve port 104 in fig. 1 (b)) of the DSC, respectively.
In this way, the hardware interfaces (the first and second interfaces of the driver) of the testing device of the present disclosure may be adapted to the hardware interface of the DSC itself. Therefore, when the DSC is tested by using the testing method 500 of the present disclosure, the DSC can be tested by removing the hardware drive of the DSC itself and connecting the corresponding interface of the driver to the solenoid valve interface and the dc motor interface of the DSC, without performing other structural changes and/or adding other components to the DSC.
In addition, the testing method 500 of the present disclosure may test the DSC with the DSC installed in a vehicle. In some embodiments, the testing method 500 may be utilized to perform real-time, on-line testing of a DSC installed in a vehicle. Specifically, the hardware drive of the DSC itself originally connected to the DSC may be removed, and the corresponding interface of the driver of the testing apparatus of the present disclosure may be connected to the solenoid valve interface and the dc motor interface of the DSC, so as to perform the DSC test.
According to the testing method disclosed by the disclosure, the DSC is not required to be detached from the vehicle, and the DSC is detected as a separated part by using special detection equipment after a series of treatments such as exhausting and oil discharging, so that the real-vehicle online monitoring can be realized, and the troubleshooting efficiency can be improved.
In some embodiments, the controller of the test device may include a control panel (e.g., control panel 400 shown in FIG. 4) having keys, knobs, and three-phase switches. The testing method 500 may further include: the first test instruction is obtained through the key, and the second test instruction is obtained through the knob and the three-phase switch. The specific testing process of the testing method 500 of the present embodiment has been described in detail above with reference to fig. 4, and is not repeated herein.
Fig. 6 shows a schematic diagram of a test stand 600 according to an embodiment of the present disclosure. The test stand 600 may be used to mount a test device (e.g., test device 200, test device 300) according to the present disclosure for testing of a DSC.
As shown in fig. 6, the test stand 600 may include a fixing portion 602 for fixing a controller 606 of the test device. The test rig 600 may further include a support 604 for supporting the DSC 608. The driver 610 of the testing device is connected to the solenoid valve interface and the dc motor interface of the DSC and is coupled to the controller.
According to an embodiment of the present disclosure, it is possible to mount a test apparatus as well as a DSC on the test stand 600 to test the DSC with the test apparatus.
In some embodiments, the test rig 600 may further include a slide (not shown) via which the DSC608 is positioned to the support 604.
In some embodiments, the support 604 may include bolt holes (not shown) that mate with the DSC. The DSC can be fixed to the support 604 by bolting.
According to the test stage 600 of the present disclosure, the test apparatus and the DSC can be simply and stably fixed to perform the test of the DSC. In addition, after the test is completed, the DSC and the test apparatus can be simply removed from the test stand 600.
Reference throughout this specification to "an embodiment" or similar language means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment of the present disclosure. Thus, appearances of the phrases "in embodiments of the present disclosure" and similar language throughout this specification do not necessarily all refer to the same embodiment.
Those skilled in the art will appreciate that the present disclosure may be implemented in various forms of hardware-only embodiments, software-only embodiments (including firmware, resident software, micro-program code, etc.), or both software and hardware, and will be referred to hereinafter as "circuits," modules "or" systems. Furthermore, the present disclosure may also be embodied in any tangible media as a computer program product having computer usable program code stored thereon.
The present disclosure is described with reference to flowchart illustrations and/or block diagrams of systems, apparatuses, methods and computer program products according to specific embodiments of the disclosure. It will be understood that each block of the flowchart illustrations and/or block diagrams, and any combination of blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be executed by a processor of a general purpose computer, special purpose computer, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, implement the functions or acts specified in the flowchart and/or block diagram block or blocks.
Flowcharts and block diagrams of the architecture, functionality, and operation in which systems, apparatuses, methods and computer program products according to various embodiments of the present disclosure may be implemented are shown in the accompanying drawings. Accordingly, each block in the flowchart or block diagrams may represent a module, segment, or portion of program code, which comprises one or more executable instructions for implementing the specified logical function(s). It should also be noted that, in some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in the drawings may be executed substantially concurrently, or in some cases, in the reverse order from the drawing depending on the functions involved. It will also be noted that each block of the block diagrams and/or flowchart illustration, and combinations of blocks in the block diagrams and/or flowchart illustration, can be implemented by special purpose hardware-based systems which perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.
Having described embodiments of the present disclosure, the foregoing description is intended to be exemplary, not exhaustive, and not limited to the disclosed embodiments. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen in order to best explain the principles of the embodiments, the practical application, or technical improvements to the market technology, or to enable others of ordinary skill in the art to understand the embodiments disclosed herein.
Claims (12)
1. A testing device of a vehicle stability control system including a solenoid valve and a dc motor, characterized by comprising:
the controller is used for acquiring a test instruction for testing the vehicle stability control system and generating a control signal based on the test instruction; and
a driver generating a driving signal for driving the vehicle stability control system according to the control signal generated by the controller,
the controller is configured to:
in response to acquiring a first test instruction for testing the solenoid valve, generating a first control signal to control the driver to generate a first driving signal for switching on the solenoid valve;
and generating a second control signal in response to acquiring a second test instruction for testing the direct current motor so as to control the driver to generate a second driving signal for rotating the direct current motor.
2. The test device of claim 1,
the driver comprises an electromagnetic coil, and the electromagnetic coil is arranged on the electromagnetic coil,
the first control signal is used to energize the solenoid to generate a first drive signal that turns the solenoid on.
3. The test device of claim 2,
the controller includes a solenoid valve control unit having a switching element,
the controller turns on a switching element of the solenoid valve control unit to generate a first control signal that energizes a solenoid coil of the driver in response to acquiring the first test instruction.
4. The test device of claim 1,
the driver includes a through circuit for connecting the controller with the DC motor,
the second control signal is input to the dc motor as a second drive signal for rotating the dc motor via the through circuit.
5. The test device of claim 4,
the controller comprises a direct current motor control unit,
and the controller responds to the second test instruction, so that the direct current motor control unit generates a second control signal comprising a current control signal and a voltage control signal, wherein the current control signal is used for controlling the rotation direction of the direct current motor, and the voltage control signal is used for controlling the rotation speed of the direct current motor.
6. The test device of claim 1,
the driver comprises a first interface used for driving the electromagnetic valve and a second interface used for driving the direct current motor, and the first interface and the second interface are respectively connected with an electromagnetic valve interface and a direct current motor interface of the vehicle stability control system.
7. The test device of claim 1,
the controller comprises a control panel, and the control panel comprises a key for acquiring the first test instruction, a knob for acquiring the second test instruction and a three-phase switch.
8. The test device of claim 7,
the vehicle stability control system comprises a plurality of electromagnetic valves, the control panel comprises a plurality of keys, each key is used for acquiring a first test instruction for testing a corresponding electromagnetic valve in the plurality of electromagnetic valves,
the controller generates a first control signal corresponding to the first test command in response to acquiring the one first test command, to control the driver to generate a first drive signal that turns on a corresponding solenoid valve of the plurality of solenoid valves.
9. The test device of claim 7,
the second control signal includes a current control signal and a voltage control signal, and the controller determines the current control signal according to a connection state of the three-phase switch and determines the voltage control signal according to a rotation amount of the knob.
10. A test rig for mounting the test apparatus of any one of claims 1 to 9 for testing of the vehicle stability control system, the test rig comprising:
a fixing part for fixing the controller; and
a support body for supporting the vehicle stability control system,
the driver is connected with an electromagnetic valve interface and a direct current motor interface of the vehicle stability control system and is coupled with the controller.
11. The test rack of claim 10, further comprising a slide,
the vehicle stability control system is positioned to the support body via the slide.
12. The test rack of claim 10,
the support body comprises a bolt hole matched with the vehicle stability control system, and the vehicle stability control system is fixed on the support body in a bolt fixing mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921310543.8U CN211121990U (en) | 2019-08-14 | 2019-08-14 | Testing device and testing bench of vehicle stability control system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921310543.8U CN211121990U (en) | 2019-08-14 | 2019-08-14 | Testing device and testing bench of vehicle stability control system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110361206A (en) * | 2019-08-14 | 2019-10-22 | 华晨宝马汽车有限公司 | The test device and testboard bay of vehicle stability control system |
| CN113325818A (en) * | 2021-04-20 | 2021-08-31 | 国家能源集团国源电力有限公司 | Test device of electro-hydraulic control system |
-
2019
- 2019-08-14 CN CN201921310543.8U patent/CN211121990U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110361206A (en) * | 2019-08-14 | 2019-10-22 | 华晨宝马汽车有限公司 | The test device and testboard bay of vehicle stability control system |
| CN113325818A (en) * | 2021-04-20 | 2021-08-31 | 国家能源集团国源电力有限公司 | Test device of electro-hydraulic control system |
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