CN209949113U - Function test system related to radio frequency signal - Google Patents
Function test system related to radio frequency signal Download PDFInfo
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- CN209949113U CN209949113U CN201920387172.7U CN201920387172U CN209949113U CN 209949113 U CN209949113 U CN 209949113U CN 201920387172 U CN201920387172 U CN 201920387172U CN 209949113 U CN209949113 U CN 209949113U
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Abstract
The utility model relates to a functional test system related to radio frequency signal to the problem that can not effectual location problem section when the radio frequency test among the solution prior art. The functional test system related to radio frequency signals comprises: the radio frequency test cabinet and the electric control test cabinet are connected through a signal wire; the radio frequency signal transmitting device is used for transmitting a wireless radio frequency command outwards; the radio frequency signal receiving device is used for receiving the wireless radio frequency instruction; and the automobile body controller is connected with the electric control test cabinet and the radio frequency signal receiving device through signal lines.
Description
Technical Field
The utility model relates to an automobile body technical field specifically is a functional test system related to radio frequency signal.
Background
In 2018, the automobile industry starts to have the first negative increase over 28 years, the automobile market starts to change from the popular automobile purchasing requirement to the automobile replacing requirement, the quality of automobile products needs to be remarkably improved to win the automobile replacing requirement of consumers, and great challenges are provided for development and testing of the automobile products. At present, automatic test systems in the automobile industry are all directed to an electric control test cabinet or an RF system independently, independent test systems can test supporting products well on the test layer of parts, but the number of electric control parts on the current automobile is more and more, mutual fusion between the electric control parts and a new technology is more and more compact, the independent automatic test systems cannot meet the development trend of multi-technology and multi-field fusion, new problems cannot be found more effectively, and the problems cannot be timely and effectively checked and positioned in sections after a user has a problem.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a function test system who relates to radio frequency signal to can not effectual segmentation investigation and the problem of location problem section when the radio frequency test among the solution prior art.
The technical scheme of the utility model is that:
the utility model provides a functional test system related to radio frequency signal, include:
the radio frequency test cabinet and the electric control test cabinet are connected through a signal wire;
the radio frequency signal transmitting device is used for transmitting a wireless radio frequency command outwards;
the radio frequency signal receiving device is used for receiving the wireless radio frequency instruction;
and the automobile body controller is connected with the electric control test cabinet and the radio frequency signal receiving device through signal lines.
Preferably, the radio frequency signal receiving device receives the wireless radio frequency command, converts the wireless radio frequency command into a wired command, and sends the wired command to the vehicle body controller through a signal line;
the vehicle body controller controls a target load to perform function execution according to the wired instruction received by the radio frequency signal receiving device, and sends a load function execution feedback signal to the electric control test cabinet;
the electric control test cabinet judges whether the function execution of the target load is abnormal or not according to the received load function execution feedback signal; if the radio frequency test equipment cabinet is abnormal, the electric control test equipment cabinet sends a detection signal to the radio frequency test equipment cabinet;
and the radio frequency test cabinet detects the wireless radio frequency instruction according to the detection signal and determines whether the reason causing the abnormal execution of the target load function is the fault of the radio frequency signal transmitting device.
Preferably, the test system further comprises:
the upper computer is respectively connected with the electric control test cabinet, the radio frequency test cabinet and the radio frequency signal receiving device; and the upper computer is used for sending a wireless radio frequency simulation instruction to the radio frequency signal receiving device when the radio frequency signal transmitting device determines that the reason causing the abnormal execution of the target load function is not the fault of the radio frequency signal transmitting device so as to repeatedly determine whether the reason causing the abnormal execution of the target load function is the fault of the radio frequency signal transmitting device.
Preferably, the test system further comprises:
the radio frequency shielding box is used for accommodating the radio frequency signal transmitting device;
the radio frequency test cabinet receives a wireless radio frequency instruction sent out by the radio frequency signal transmitting device through a radio frequency antenna, the radio frequency antenna is connected with the radio frequency test cabinet through a hard wire, and the radio frequency antenna device is arranged in the radio frequency shielding box.
Preferably, the radio frequency test cabinet comprises:
a PXIE chassis;
the device comprises a first programmable power board card, a PXIE control board card, a radio frequency measurement board card, a radio frequency switch board card and a UPS power board card which are arranged in the PXIE case;
the current output by the first programmable power supply board card is converted by the UPS power supply board card and then supplies power to the PXIE control board card, the radio frequency measurement board card and the radio frequency switch board card;
the radio frequency switch board card is used for sending an enabling signal to the PXIE control board card to enable the PXIE control board card to start or stop a radio frequency instruction detection function;
and when the PXIE control board card receives the detection signal sent by the electronic control test cabinet, the radio frequency measurement board card is controlled to acquire the radio frequency command through the radio frequency antenna, and the radio frequency command is detected to determine whether the cause of the abnormal execution of the target load function is the fault of the radio frequency signal transmitting device.
Preferably, the electrically controlled test cabinet comprises:
the second programmable power supply board card, the power supply control box and the power supply board card are connected in sequence;
the ECU interface box is connected with the vehicle body controller;
the load measurement board card is respectively connected with the ECU interface box and the PXIE control board card;
the communication bus board card is connected between the radio frequency signal receiving device and the vehicle body controller and is connected with the load measurement board card;
the second programmable power supply board is controlled by the power supply control box to output current, and the ECU interface box and the load measuring board are powered by the power supply board;
the load measurement board receives a load function execution feedback signal sent by the automobile body controller through the ECU interface box, and judges whether the function execution of a target load is abnormal or not; if the detection signal is abnormal, sending a detection signal to the PXIE control board card;
the communication bus board card collects a wired instruction transmitted on a signal line between the radio frequency signal receiving device and the automobile body controller, and forwards the wired instruction to the load measurement board card, so that the load measurement board card further determines whether the reason causing the abnormal execution of the load function is the fault of the radio frequency signal receiving device according to the wired instruction.
The utility model has the advantages that:
when the radio frequency test is carried out, a radio frequency test function is integrated on the basis of the electric control test cabinet, and when the load is found not to correctly execute the function instruction of the radio frequency signal transmitting device, whether the function instruction is caused by incorrect wireless radio frequency instruction or not is checked through the radio frequency test cabinet, so that the fault of the radio frequency signal transmitting device can be eliminated; meanwhile, after the fault of the radio frequency signal transmitting device is determined, whether the radio frequency signal receiving device of the signal receiving end is in fault can be further determined, and the effect of accurately determining the problem section which causes the load to not execute the function correctly is achieved.
Drawings
FIG. 1 is a schematic block diagram of a test system of the present invention;
fig. 2 is a test flow chart of the test system of the present invention during testing;
fig. 3 is a test flow chart of the test system of the present invention during testing;
fig. 4 is a specific schematic structure diagram of the electronic control testing cabinet and the radio frequency testing cabinet in the embodiment of the present invention.
Detailed Description
Referring to fig. 1, the utility model provides a function test system relating to radio frequency signals, which comprises a radio frequency test cabinet 1 and an electric control test cabinet 2 connected by signal lines; a radio frequency signal transmitting device 3 for transmitting a radio frequency command outwards; a radio frequency signal receiving device 4 for receiving the radio frequency instruction; and the automobile body controller 5 is connected with the radio frequency signal receiving device 4 through a signal wire, and the automobile body controller 5 is connected with the electric control test cabinet 2 through a signal wire.
In order to realize the test, the radio frequency signal receiving device 4 receives the wireless radio frequency command, converts the wireless radio frequency command into a wired command, and then sends the wired command to the automobile body controller 5 through a signal wire; the vehicle body controller 5 controls a target load to perform function execution according to the wired instruction, and sends a load function execution feedback signal to the electric control test cabinet 2; the electric control test cabinet 2 judges whether the function execution of the target load is abnormal or not according to the received load function execution feedback signal; if the radio frequency test equipment cabinet is abnormal, the electric control test equipment cabinet 2 sends a detection signal to the radio frequency test equipment cabinet 1; and the radio frequency test cabinet 1 detects the wireless radio frequency instruction according to the detection signal, and determines whether the reason causing the abnormal execution of the target load function is the fault of the radio frequency signal transmitting device 3.
In the above scheme, after receiving the wired instruction forwarded by the radio frequency signal receiving device 4, the vehicle body controller 5 firstly analyzes the wired instruction to determine the target load. In the process of controlling the target load to perform function execution, a signal may be sent to the target load having an entity connection relationship with the vehicle body controller 5, so that the target load performs actual function execution, after the target load completes the function execution, the target load feeds back a signal to the vehicle body controller 5, and the vehicle body controller 5 sends a load function execution feedback signal to the electronic control test cabinet 2 according to the received feedback signal. Or, in the process of controlling the target load to perform the function execution, the vehicle body controller 5 sets the corresponding target load function execution feedback signal to be valid to indicate that the target load actually executes the corresponding function, and the vehicle body controller 5 similarly sends the load function execution feedback signal to the electronic control test cabinet 2.
The radio frequency command received by the radio frequency signal receiving device 4 can be transmitted as an entity transmitting device (i.e. the radio frequency signal transmitting device 3) at the signal transmitting end. The radio frequency signal transmitter 3 is mainly a physical device on the vehicle, such as a remote control key or a tire pressure sensor, which can emit radio frequency signals. At this time, in order to improve the interference resistance to the radio frequency signal transmission device 3, the test system further includes: and the radio frequency shielding box 7 is used for placing the radio frequency signal transmitting device 3 in the radio frequency shielding box 7. Meanwhile, a radio frequency antenna 13 connected with the radio frequency test cabinet 1 is also arranged in the radio frequency shielding box 7, and the radio frequency antenna 13 is connected with the radio frequency test cabinet 1 through a hard wire.
The system also comprises: the upper computer 6 is respectively connected with the electric control test cabinet 2, the radio frequency test cabinet 1 and the radio frequency signal receiving device 4; the upper computer 6 is used for sending a wireless radio frequency simulation instruction to the radio frequency signal receiving device 4 when the radio frequency signal transmitting device 3 determines that the reason causing the abnormal execution of the target load function is not the fault of the radio frequency signal transmitting device 3, so as to repeatedly determine whether the reason causing the abnormal execution of the target load function is the fault of the radio frequency signal transmitting device 3.
After receiving the wireless radio frequency instruction, the radio frequency signal receiving device 4 performs signal analysis to obtain a function instruction to be executed by the electronic control test cabinet 2, and determines whether a function corresponding to the function instruction is a function predefined between the radio frequency signal receiving device 4 and the radio frequency signal transmitting device 3, if so, the function instruction is converted into a wired form and is sent to the vehicle body controller 5.
The radio frequency signal receiving device 4 is connected with the wired radio frequency command of the automobile body controller 5 through an LIN bus, so that the radio frequency signal receiving device 4 sends the command to the automobile body controller 5 in a LIN message mode; after receiving the message, the vehicle body controller 5 analyzes the message, and determines a specific instruction sent to the vehicle body controller 5 by the radio frequency signal receiving device 4 through message instruction comparison in the LIN protocol.
After the instruction analysis is completed, the vehicle body controller 5 performs corresponding target load control operations, such as unlocking and locking of a door lock of a vehicle door, opening and closing of a trunk, keyless entry or keyless starting and the like, according to the radio frequency signal receiving device 4. Or controlling the setting of the corresponding target load function execution signal. After the load control operation or the signal setting is completed, the vehicle body controller 5 sends a message to the electric control test cabinet 2 through the LIN bus.
After receiving the information fed back by the vehicle body controller 5, the electronic control test cabinet 2 analyzes the message information of the vehicle body controller 5 according to the LIN protocol pre-established between the electronic control test cabinet 2 and the vehicle body controller 5, and judges the final execution result of the vehicle body controller 5, thereby judging whether the target load correctly executes the function required by the radio frequency instruction. Specifically, the instruction sent by the vehicle body controller 5 to the electrically controlled test cabinet 2 is to complete the control operation for the specific demand load or to not complete the control operation for the specific demand load. And the electric control test cabinet 2 analyzes the message according to the protocol, and then the final execution result of the vehicle body controller 5 can be obtained. And if the electronic control test cabinet 2 determines that the vehicle body controller 5 correctly executes the control operation on the specific required load, the test on the electronic control test cabinet 2 and the radio frequency test cabinet 1 is completed. For example, the radio frequency signal transmitting device 3 is specifically a remote control key, the remote control key transmits a radio frequency command carrying a door unlocking command, after the vehicle body controller 5 executes a load control operation, if the door is unlocked correctly, the vehicle body controller 5 sets the flag bit in the message to be 1 and sends the flag bit to the electronic control test cabinet 2; otherwise, the vehicle body controller 5 sets the flag bit in the message to 0 and sends the flag bit to the electronic control test cabinet 2.
If the electronic control test cabinet 2 determines that the vehicle body controller 5 does not correctly execute the control operation on the required load, the electronic control test cabinet 2 informs the radio frequency test cabinet 1 to enter a real-time acquisition and analysis wireless radio frequency instruction in a network port data transmission mode, specifically, the radio frequency test cabinet 1 receives the wireless radio frequency instruction through the radio frequency antenna 13 and analyzes the signal to obtain the required function in the instruction carried in the wireless radio frequency instruction, and further, whether the reason causing the abnormality is an instruction error carried in the wireless radio frequency instruction is judged. Specifically, the cause of the target load execution abnormality is at least one of the following causes: 1. the instruction carried in the wireless radio frequency received by the radio frequency signal receiving device 4 is wrong; 2. if a load physically connected with the vehicle body controller 5 exists, the control instruction issued when the vehicle body controller 5 controls the target load to execute the function is wrong, and/or the target load is not executed correctly when the function is executed; if there is no load physically connected to the vehicle body controller 5, it is an error when the vehicle body controller 5 sets the corresponding load execution function signal. The process of detecting and judging the radio frequency test cabinet 1 can effectively eliminate and position whether the reason for the abnormal execution of the target load function is the fault of the radio frequency signal transmitting device 3. For example, the radio frequency signal transmitting device 3 is a remote control key, the remote control key transmits a radio frequency command carrying a door unlocking command, and if the radio frequency test cabinet 1 analyzes that a required function in the command transmitted by the remote control key is door unlocking. The reason for the improper unlocking of the door can be determined to be not in the key fob, and the key fob fault can be eliminated.
Meanwhile, in the application, the radio frequency testing cabinet 1 can store the acquisition and analysis results in the local of the radio frequency testing cabinet 1, and if the final execution result of the vehicle body controller 5 is inconsistent with the actual trigger expected result, the electronic control testing cabinet 2 can tell the radio frequency testing cabinet 1 in a network port data transmission mode to transmit the analyzed result to the electronic control testing cabinet 5 and present the analyzed result to a user for positioning problems.
For the above-mentioned radio frequency testing cabinet 1, it includes a receiving and sending module 12 and a first power module 11 for supplying power to the receiving and sending module 12, where the receiving and sending module 12 is configured to receive a signal of the electronic control testing cabinet 2, receive a radio frequency command transmitted by the radio frequency signal transmitting device 3 through the radio frequency antenna 13, and detect the radio frequency command to determine whether a cause of the target load function execution abnormality is a failure of the radio frequency signal transmitting device 3. For the physical components of the apparatus in fig. 4, the radio frequency test cabinet 1 includes: a PXIE chassis 102; the device comprises a first programmable power board 101, a PXIE control board 103, a radio frequency measurement board 104 for acquiring and analyzing a wireless radio frequency command, a radio frequency switch board 105 for receiving a man-machine control signal, and a UPS power board 106 for converting direct current into alternating current, wherein the first programmable power board 101, the PXIE control board 103, the radio frequency measurement board 104 and the radio frequency switch board 105 are arranged in the PXIE case 102, and are both connected with the PXIE control board 103. After the current output by the first programmable power board 101 is subjected to dc-ac conversion by the UPS power board 106, the current supplies power to the PXIE control board 103, the radio frequency measurement board 104 and the radio frequency switch board 105; the radio frequency switch board card 105 is configured to receive a touch signal of a user, and send an enable signal to the PXIE control board card 103, so that the PXIE control board card 103 turns on or turns off a radio frequency instruction detection function; when receiving the detection signal sent by the electronic control test cabinet 2, the PXIE control board 103 controls the radio frequency measurement board 104 to acquire the radio frequency command through the radio frequency antenna 13, and detects the radio frequency command to determine whether the cause of the abnormal execution of the target load function is a fault of the radio frequency signal transmitting device 3. The first programmable power board 101 and the UPS power board 106 together form a first power module 11, and the remaining boards form a receiving and transmitting module 12. For the system, the rf measurement board 104 needs to be connected to the rf signal transmitting device 3.
For the electronic control test cabinet 2, it includes an input and output control module 22 and a second power supply 21 for supplying power to the input and output control module 22, where the input and output control module 22 is used for signal interaction with the receiving and sending module 12, the upper computer 6 and the body controller 5. For the physical components of the apparatus of fig. 4, the electrically controlled test cabinet 2 comprises: a second programmable power board 201, a power control box 202 and a power board 204 which are connected in sequence; an ECU interface box 203 connected to the vehicle body controller 5; the load measurement board card 205 is connected with the ECU interface box 203 and the PXIE control board card 103 respectively; a communication bus board 206 connected between the radio frequency signal receiving device 4 and the vehicle body controller 5, wherein the communication bus board 206 is connected with the load measurement board 205; the second programmable power supply board 201 outputs current under the control of the power supply control box 202, and supplies power to the ECU interface box 203 and the load measurement board 205 through the power supply board 204; the load measurement board 205 receives a load function execution feedback signal sent by the vehicle body controller 5 through the ECU interface box 203, and determines whether a target load is abnormal in function execution; if the detection signal is abnormal, sending a detection signal to the PXIE control board card 103; the communication bus board 206 collects a wired instruction transmitted on a signal line between the radio frequency signal receiving device 4 and the body controller 5, and forwards the wired instruction to the load measurement board 205, so that the load measurement board 205 further determines whether a cause of the load function execution abnormality is the radio frequency signal receiving device 4 fault according to the wired instruction. The second programmable power board 201, the power control box 202 and the power board 204 form the second power module 21, and the remaining boards form the input and output control module 22. The second programmable power board 201 has a plurality of current output channels, which are controlled by the power control box 202 to supply power to the power board 204, and the power board 204 performs dc-ac conversion on the received current and outputs the converted current.
Specifically, as shown in fig. 4, in this embodiment, taking the radio frequency signal transmitting device 3 as a remote control key for example, the test system mainly includes the following steps during testing:
step 403, the radio frequency signal receiving device 4 receives and analyzes the radio frequency command, determines whether the command carried in the radio frequency command is a predefined command, if yes, performs signal processing, and sends the wired command obtained by the processing to the vehicle body controller 5; otherwise, ending the flow;
404, the vehicle body controller 5 receives and analyzes the wired instruction of the radio frequency signal receiving device 4, and sets a corresponding door lock unlocking signal as valid; after the setting is finished, the vehicle body controller 5 sends a message signal to the electric control test cabinet 2;
step 413, transmitting a door unlocking signal simulating the real remote control key to the radio frequency signal receiving device 4 through the upper computer 6, meanwhile, converting the simulation signal transmitted by the upper computer into a wired instruction by the radio frequency signal receiving device 4, transmitting the wired instruction to the vehicle body controller through the LIN bus, and then entering step 409 to further confirm whether the radio frequency signal receiving device 4 is in fault.
The above process can quickly determine whether the radio frequency signal transmitting device 3 serving as a radio frequency signal transmitting end and the radio frequency signal receiving device 4 serving as a radio frequency signal receiving end are in fault.
In order to improve the detection accuracy of the rf signal transmitting apparatus 3, a step for repeatedly confirming the failure of the rf signal transmitting apparatus 3 is added between step 407 and step 409 in fig. 2, specifically as shown in fig. 3, a step 414 is added between step 407 and step 409, and the specific content of step 414 is: and removing the remote control key of the entity, establishing connection between the upper computer 6 and the radio frequency signal receiving device 4, sending a wireless radio frequency command simulating a car door unlocking signal through the radio frequency signal receiving device 4 on the upper computer 6, and then repeating the steps 403 to 406 to repeatedly confirm that the radio frequency signal transmitting device 3 is not in fault. Fig. 3 provides a flow chart for more accurately eliminating the malfunction of the rf signal transmitting device 3 as the rf signal transmitting terminal, compared to fig. 2.
In the system provided by the embodiment, when the radio frequency test is performed, the radio frequency test function is integrated on the basis of the electronic control test cabinet 2, and when the load is found not to correctly execute the function instruction of the radio frequency signal transmitting device 3, the radio frequency test cabinet 1 is used for checking whether the function instruction is caused by incorrect radio frequency instruction, so that the fault of the radio frequency signal transmitting device 3 can be eliminated; meanwhile, after the fault of the radio frequency signal transmitting device 3 is determined, the fault of the radio frequency signal receiving device 4 at the signal receiving end can be further determined, and the effect of accurately determining the problem section which causes the load to not execute the function correctly is achieved. Meanwhile, the fusion of the two test cabinets is triggered and the result is judged through software of an upper computer, so that the fusion test of multiple systems and multiple technologies is realized in a simple and effective mode.
In this embodiment, there is also provided a functional test method based on the above mentioned radio frequency signal, before performing a test, the test system is required to be already set up, and each component is correctly connected, the method includes the following steps:
step 301, the radio frequency signal receiving device 4 receives a wireless radio frequency command transmitted from the radio frequency signal transmitting device 3, converts the wireless radio frequency command into a wired command, and transmits the wired command to the vehicle body controller 5 through a signal line.
Wherein, the wireless radio frequency instruction is sent by the radio frequency signal transmitting device 3 or the upper computer 6. The radio frequency signal transmitting device 3 establishes an interface protocol with the radio frequency signal receiving device 4 in advance, or the upper computer 6 establishes an interface protocol with the radio frequency signal receiving device 4 in advance, and determines which instructions are carried in the transmitted radio frequency instructions. After receiving the radio frequency command, the radio frequency signal receiving device 4 analyzes the radio frequency command and judges whether the command carried in the radio frequency command belongs to one of the prestored commands. If so, the bus is converted, and the converted wired command is forwarded to the body controller 5 through the LIN bus.
And step 302, the vehicle body controller 5 controls the target load to perform function execution according to the wired instruction, and feeds back a load function execution feedback signal to the electronic control test cabinet 2.
After receiving the radio frequency instruction, the vehicle body controller 5 transmits a control signal to perform function execution on a target load having an entity connection relationship with the vehicle body controller; or setting a function execution signal representing the target load to indicate that the target load has completed the function execution. Then, the vehicle body controller 5 feeds back a feedback signal that the target load has completed the function execution to the electronic control test cabinet 2 through the LIN message.
Step 303, the electronic control test cabinet 2 judges whether the function execution of the target load is abnormal according to the load function execution feedback signal; and if the radio frequency test equipment cabinet is abnormal, transmitting a detection signal to the radio frequency test equipment cabinet 1.
And the electric control test cabinet 2 judges whether the target load is abnormal in function execution or not according to the message flag bit in the load function execution feedback signal.
Step 304, the radio frequency test cabinet 1 detects the radio frequency command according to the detection signal, and determines whether the cause of the target load function execution abnormality is a failure of the radio frequency signal transmitting device 3.
Specifically, the radio frequency test cabinet 1 determines whether the target load does not execute the function correctly due to an instruction error carried in the radio frequency instruction according to the radio frequency instruction. If the instruction carried in the wireless radio frequency instruction is determined to be correct, the radio frequency signal error transmitted by the radio frequency signal transmitting device 1 can be eliminated.
If the radio frequency instruction indicates that the reason causing the abnormal execution of the target load function is not the fault of the radio frequency signal transmitting device 3, the method further comprises the following steps:
305, sending a wireless radio frequency simulation instruction to the radio frequency signal receiving device 4 through the upper computer 6, converting the wireless radio frequency simulation instruction into a wired instruction by the radio frequency signal receiving device 4, and then forwarding the wired instruction to the automobile body controller 5;
repeating steps 301 to 304 for repeatedly determining whether the cause of the abnormal execution of the target load function is the failure of the radio frequency signal transmitting apparatus 3.
The step 305 is provided for repeatedly confirming whether the radio frequency signal transmission device 3 is malfunctioning, thereby improving the detection accuracy.
Further, if the radio frequency testing cabinet 1 determines that the cause of the abnormal execution of the target load function is not the failure of the radio frequency signal transmitting apparatus 3, the method further includes:
step 306, the radio frequency test cabinet 1 sends a feedback signal with a normal detection result to the electronic control test cabinet 2;
step 307, the electronic control test cabinet 2 acquires the wired instruction which is transmitted to the vehicle body controller 5 by the radio frequency signal receiving device 4 according to the feedback signal;
step 308, the electronic control test cabinet 2 determines whether the cause of the abnormal execution of the target load function is the failure of the radio frequency signal receiving device 4 according to the wired instruction.
Specifically, the correctness of the instruction is judged through a message flag bit transmitted on the LIN bus, and the fault of the radio frequency signal receiving device 4 is determined when the wired instruction is wrong; and the wired instruction is correct, and the radio frequency signal receiving device 4 is determined not to be in failure. If it is determined in step 308 that the radio frequency signal receiving apparatus 4 is not faulty, the fault of the radio frequency signal transmitting apparatus 3 as the signal transmitting end and the fault of the radio frequency signal receiving apparatus 4 as the signal receiving end are eliminated, and further, it is determined that the reason for causing the target load to perform the function incorrectly is that the vehicle body controller 5 as the control end and the target load itself perform the function incorrectly.
If the electronic control test cabinet 2 determines that the cause of the abnormal execution of the target load function is the failure of the radio frequency signal transmitting device 3, the method further comprises the following steps:
309, sending a wireless radio frequency simulation instruction to the radio frequency signal receiving device 4 through the upper computer 6, converting the wireless radio frequency simulation instruction into a wired instruction by the radio frequency signal receiving device 4, and then forwarding the wired instruction to the automobile body controller 5;
in step 310, the electronic control test cabinet 2 collects the wired command, and determines whether the cause of the abnormal execution of the target load function includes a fault of the radio frequency signal receiving device 4.
In the method, the fault determination of the radio frequency signal transmitting device 3 serving as a signal transmitting end and the radio frequency signal receiving device 4 serving as a signal receiving end is realized, and in the radio frequency test process, the fault problem section can be quickly locked according to the method.
Claims (5)
1. A functional test system relating to radio frequency signals, comprising:
the radio frequency testing cabinet (1) and the electric control testing cabinet (2) are connected through signal wires;
the radio frequency signal transmitting device (3) is used for transmitting a wireless radio frequency command outwards;
radio frequency signal receiving means (4) for receiving said radio frequency command;
and the automobile body controller (5) is connected with the electric control test cabinet (2) and the radio frequency signal receiving device (4) through signal lines.
2. The test system of claim 1, further comprising:
the upper computer (6) is respectively connected with the electric control test cabinet (2), the radio frequency test cabinet (1) and the radio frequency signal receiving device (4);
and the upper computer (6) is used for sending a wireless radio frequency simulation instruction to the radio frequency signal receiving device (4) when the radio frequency signal transmitting device (3) determines that the reason causing the abnormal execution of the target load function is not the fault of the radio frequency signal transmitting device (3), so as to repeatedly determine whether the reason causing the abnormal execution of the target load function is the fault of the radio frequency signal transmitting device (3).
3. The test system of claim 2, further comprising:
the radio frequency shielding box (7), the radio frequency signal transmitting device (3) is placed in the radio frequency shielding box (7);
the radio frequency testing cabinet (1) receives a wireless radio frequency instruction sent out by the radio frequency signal transmitting device (3) through a radio frequency antenna (13), the radio frequency antenna (13) is connected with the radio frequency testing cabinet (1) through a hard wire, and the radio frequency antenna (13) is arranged in the radio frequency shielding box (7).
4. A test system according to claim 3, wherein the radio frequency test cabinet (1) comprises:
a PXIE chassis (102);
the device comprises a first programmable power board card (101), a PXIE control board card (103), a radio frequency measurement board card (104), a radio frequency switch board card (105) and a UPS power board card (106), wherein the first programmable power board card is arranged in a PXIE case (102);
the current output by the first programmable power supply board card (101) is converted by the UPS power supply board card (106) and then supplies power to the PXIE control board card (103), the radio frequency measurement board card (104) and the radio frequency switch board card (105);
the radio frequency switch board card (105) is used for sending an enabling signal to the PXIE control board card (103) to enable the PXIE control board card (103) to start or stop a radio frequency instruction detection function;
when receiving a detection signal sent by the electronic control test cabinet (2), the PXIE control board card (103) controls the radio frequency measurement board card (104) to acquire the radio frequency command through the radio frequency antenna (13), and detects the radio frequency command to determine whether the cause of the target load function execution abnormality is the fault of the radio frequency signal transmitting device (3).
5. Test system according to claim 4, characterized in that the electrically controlled test cabinet (2) comprises:
the power supply control box comprises a second programmable power supply board card (201), a power supply control box (202) and a power supply board card (204) which are connected in sequence;
an ECU interface box (203) connected with the vehicle body controller (5);
the load measurement board card (205) is connected with the ECU interface box (203) and the PXIE control board card (103) respectively;
the communication bus board card (206) is connected between the radio frequency signal receiving device (4) and the automobile body controller (5), and the communication bus board card (206) is connected with the load measurement board card (205);
the second programmable power supply board card (201) outputs current under the control of the power supply control box (202), and supplies power to the ECU interface box (203) and the load measurement board card (205) through the power supply board card (204);
the load measurement board card (205) receives a load function execution feedback signal sent by the automobile body controller (5) through the ECU interface box (203), and judges whether the function execution of a target load is abnormal; if the detection signal is abnormal, the detection signal is sent to the PXIE control board card (103);
the communication bus board card (206) collects a wired instruction transmitted on a signal line between the radio frequency signal receiving device (4) and the automobile body controller (5), and forwards the wired instruction to the load measurement board card (205), so that the load measurement board card (205) further determines whether the reason causing the abnormal load function execution is the fault of the radio frequency signal receiving device (4) according to the wired instruction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920387172.7U CN209949113U (en) | 2019-03-26 | 2019-03-26 | Function test system related to radio frequency signal |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920387172.7U CN209949113U (en) | 2019-03-26 | 2019-03-26 | Function test system related to radio frequency signal |
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| CN209949113U true CN209949113U (en) | 2020-01-14 |
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| CN201920387172.7U Active CN209949113U (en) | 2019-03-26 | 2019-03-26 | Function test system related to radio frequency signal |
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