CN109861766B - Function test system and method related to radio frequency signals - Google Patents
Function test system and method related to radio frequency signals Download PDFInfo
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- CN109861766B CN109861766B CN201910230196.6A CN201910230196A CN109861766B CN 109861766 B CN109861766 B CN 109861766B CN 201910230196 A CN201910230196 A CN 201910230196A CN 109861766 B CN109861766 B CN 109861766B
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Abstract
The invention relates to a functional test system and method related to radio frequency signals, which are used for solving the problem that a problem section cannot be effectively positioned during radio frequency test in the 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; a radio frequency signal transmitting device; a radio frequency signal receiving device; a vehicle body controller; the radio frequency signal receiving device receives a radio frequency instruction, converts the radio frequency instruction into a wired instruction and sends the wired instruction to the vehicle body controller; the vehicle body controller controls the 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; the electric control test cabinet judges whether the target load is abnormal in function execution or not according to the received load function execution feedback signal; if the radio frequency detection signal is abnormal, the electric control test cabinet sends the detection signal to the radio frequency test cabinet; the radio frequency test cabinet detects the radio frequency instruction according to the detection signal, and determines whether the reason for abnormal execution of the target load function is a fault of the radio frequency signal transmitting device.
Description
Technical Field
The invention relates to the technical field of automobile bodies, in particular to a functional test system and method related to radio frequency signals.
Background
In 2018, the automobile industry starts to grow negatively for the first time in 28 years, the automobile market starts to change from the popular automobile purchasing requirement to the automobile changing type purchasing requirement, the quality of automobile products must be obviously improved to gain the automobile changing requirement of consumers, and great challenges are presented to the development and the test of the automobile products. At present, an automatic test system in the automobile industry is independently aimed at an electric control test cabinet or an RF system, an independent test system can well support product test on a part test level, but the number of electric control parts on the current automobile is increased, mutual fusion between the electric control parts and a new technology is also increased and tighter, the independent automatic test system cannot meet the development trend of multi-technology and multi-field fusion, new problems cannot be found more effectively, and after problems occur to users, the problems cannot be effectively and sectionally checked and positioned timely.
Disclosure of Invention
The invention aims to provide a functional test system and method related to radio frequency signals, which are used for solving the problem that the problem section cannot be effectively and sectionally checked and positioned during radio frequency test in the prior art.
The technical scheme of the invention is as follows:
the invention provides a functional test system related to radio frequency signals, comprising:
the radio frequency test cabinet and the electric control test cabinet are connected through signal wires;
a radio frequency signal transmitting device for transmitting a radio frequency command outwards;
radio frequency signal receiving means for receiving the radio frequency instruction;
the vehicle body controller is connected with the electric control test cabinet and the radio frequency signal receiving device through signal wires;
the radio frequency signal receiving device receives the radio frequency instruction, converts the radio frequency instruction into a wired instruction and sends the wired instruction to the vehicle body controller through a signal line;
the vehicle body controller controls the 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 target load is abnormal in function execution or not according to the received load function execution feedback signal; if the radio frequency test cabinet is abnormal, the electric control test cabinet sends a detection signal to the radio frequency test cabinet;
and the radio frequency test cabinet detects the radio frequency instruction according to the detection signal and determines whether the reason for abnormal execution of the target load function is the failure 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 for causing the abnormal execution of the target load function is not the failure of the radio frequency signal transmitting device, so as to repeatedly determine whether the reason for causing the abnormal execution of the target load function is the failure of the radio frequency signal transmitting device.
Preferably, the test system further comprises:
the radio frequency signal transmitting device is arranged in the radio frequency shielding box;
the radio frequency test cabinet receives a radio frequency instruction sent outwards 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:
PXIE chassis;
the device comprises a first programmable power supply board, a PXIE control board, a radio frequency measurement board, a radio frequency switch board and a UPS power supply board which are arranged in the PXIE chassis;
after the current output by the first programmable power supply board is converted through the UPS power supply board, the current is supplied to the PXIE control board, the radio frequency measurement board and the radio frequency switch board;
the radio frequency switch board card is used for sending an enabling signal to the PXIE control board card so that the PXIE control board card can start or stop a radio frequency instruction detection function;
when the PXIE control board card receives the detection signal sent by the electric control test cabinet, the radio frequency measurement board card is controlled to acquire the radio frequency instruction through the radio frequency antenna, and the radio frequency instruction is detected to determine whether the reason for causing the abnormal execution of the target load function is the failure of the radio frequency signal transmitting device.
Preferably, the electrically controlled test cabinet comprises:
the second programmable power supply board, the power supply control box and the power supply board are connected in sequence;
an ECU interface box connected with the vehicle body controller;
the load measuring 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 measuring board card;
the second programmable power board card outputs current under the control of the power control box and supplies power to the ECU interface box and the load measuring board card through the power board card;
the load measurement board card receives a load function execution feedback signal sent by the vehicle body controller through the ECU interface box and judges whether the target load is abnormal in function execution or not; if the PXIE control board card is abnormal, sending a detection signal to the PXIE control board card;
the communication bus board card collects wired instructions transmitted on a signal line between the radio frequency signal receiving device and the vehicle body controller, and forwards the wired instructions to the load measurement board card, so that the load measurement board card further determines whether the reason for abnormal execution of the load function is the failure of the radio frequency signal receiving device according to the wired instructions.
According to another aspect of the present invention, there is also provided a functional test method related to a radio frequency signal, applied to the functional test system related to a radio frequency signal, the method including:
step 301, a radio frequency signal receiving device receives a radio frequency instruction transmitted outwards by a radio frequency signal transmitting device, converts the radio frequency instruction into a wired instruction and transmits the wired instruction to the vehicle body controller through a signal wire;
step 302, the vehicle body controller controls the target load to perform function execution according to the wireless radio frequency instruction, and feeds back a load function execution feedback signal to the electric control test cabinet;
step 303, the electric control test cabinet judges whether the target load has abnormal function execution according to the load function execution feedback signal; if the detection signal is abnormal, transmitting the detection signal to the radio frequency test cabinet;
step 304, the radio frequency test cabinet detects the radio frequency command according to the detection signal, and determines whether the reason for the abnormal execution of the target load function is the failure of the radio frequency signal transmitting device.
Preferably, if the radio frequency test cabinet determines that the reason for the abnormal performance of the target load function is not the failure of the radio frequency signal transmitting device, the method further includes:
step 305, a wireless radio frequency analog instruction is sent to the radio frequency signal receiving device through an upper computer, and the radio frequency signal receiving device forwards the wireless radio frequency analog signal to a vehicle body controller;
steps 301 to 304 are repeated to repeatedly determine whether the cause of the abnormal performance of the target load function is a failure of the rf signal transmitting device.
Preferably, if the radio frequency test cabinet determines that the reason for the abnormal performance of the target load function is not the failure of the radio frequency signal transmitting device, the method further includes:
the radio frequency test cabinet sends a feedback signal with normal detection results to the electric control test cabinet;
the electronic control test cabinet collects wired instructions forwarded to the vehicle body controller by the radio frequency signal receiving device according to the feedback signals;
and the electric control test cabinet determines whether the reason for causing the abnormal execution of the target load function is the failure of the radio frequency signal receiving device according to the wired instruction.
Preferably, if the electronically controlled test cabinet determines that the cause of the abnormal performance of the target load function is a failure of the radio frequency signal transmitting device, the method further comprises:
step 309, a wireless radio frequency analog instruction is sent to the radio frequency signal receiving device through the upper computer, and the radio frequency signal receiving device converts the wireless radio frequency analog instruction into a wired instruction and then forwards the wired instruction to a vehicle body controller;
step 310, the electronic control test cabinet collects the wired instruction and determines whether the reason for the abnormal execution of the target load function includes the failure of the radio frequency signal receiving device.
The beneficial effects of the invention are as follows:
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 to not execute the function instruction of the radio frequency signal transmitting device correctly, whether the radio frequency instruction is incorrect or not is checked by the radio frequency test cabinet, so that the fault of the radio frequency signal transmitting device can be eliminated; meanwhile, after determining whether the radio frequency signal transmitting device is faulty or not, whether the radio frequency signal receiving device serving as the signal receiving end is faulty or not can be further determined, and the effect of accurately determining the problem section causing the load to incorrectly perform functions is achieved.
Drawings
FIG. 1 is a schematic block diagram of a test system of the present invention;
FIG. 2 is a flow chart of the test system of the present invention when performing a test;
FIG. 3 is a test flow chart of the test system of the present invention when performing a test;
fig. 4 is a schematic diagram of an electric control test cabinet and a radio frequency test cabinet according to an embodiment of the present invention.
Detailed Description
Referring to fig. 1, the present invention provides a functional test system involving radio frequency signals, comprising a radio frequency test cabinet 1 and an electrically controlled test cabinet 2 connected by a signal line; a radio frequency signal transmitting means 3 for transmitting a radio frequency instruction to the outside; radio frequency signal receiving means 4 for receiving the radio frequency instruction; and the vehicle body controller 5 is connected with the radio frequency signal receiving device 4 through a signal line, and the vehicle body controller 5 is connected with the electric control test cabinet 2 through the signal line.
In order to realize the test, the radio frequency signal receiving device 4 receives the radio frequency command, converts the radio frequency command into a wired command, and sends the wired command to the vehicle body controller 5 through a signal line; 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 target load is abnormal in function execution or not according to the received load function execution feedback signal; if abnormal, the electric control test cabinet 2 sends a detection signal to the radio frequency test cabinet 1; the radio frequency test cabinet 1 detects the radio frequency command according to the detection signal, and determines whether the reason for the abnormal execution of the target load function is the failure of the radio frequency signal transmitting device 3.
In the above-mentioned scheme, after receiving the wired command forwarded by the radio frequency signal receiving device 4, the vehicle body controller 5 first analyzes the wired command to determine the target load. In the process of controlling the target load to perform the function execution, a signal may be sent to the target load having a physical connection relationship with the vehicle body controller 5, so that the target load performs the 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 indicates that the target load has actually performed the corresponding function by asserting the corresponding target load function execution feedback signal, and the vehicle body controller 5 likewise 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 by an entity transmitting device (namely, the radio frequency signal transmitting device 3) as a signal transmitting end. The rf signal transmitting device 3 is mainly a physical device on the vehicle that can emit a wireless rf signal, for example, a remote key or a tire pressure sensor. At this time, in order to improve the anti-interference capability to the radio frequency signal transmitting apparatus 3, the test system further includes: a radio frequency shielding box 7, said radio frequency signal transmitting device 3 being placed in said radio frequency shielding box 7. At the same time, a radio frequency antenna 13 connected to the radio frequency test cabinet 1 is also arranged in the radio frequency shielding box 7, and the radio frequency antenna 13 is connected to the radio frequency test cabinet 1 through hard wires.
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 configured to send a radio frequency analog instruction to the radio frequency signal receiving device 4 when the radio frequency signal transmitting device 3 determines that the cause of the abnormal execution of the target load function is not the failure of the radio frequency signal transmitting device 3, so as to repeatedly determine whether the cause of the abnormal execution of the target load function is the failure of the radio frequency signal transmitting device 3.
After receiving the radio frequency command, the radio frequency signal receiving device 4 performs signal analysis to obtain a function command to be executed by the electric control test cabinet 2, and judges whether the function corresponding to the function command is a predefined function between the radio frequency signal receiving device 4 and the radio frequency signal transmitting device 3, if so, the command is converted into a wired form and sent to the vehicle body controller 5.
The radio frequency signal receiving device 4 and the wired radio frequency instruction of the vehicle body controller 5 are connected through the LIN bus, so that the radio frequency signal receiving device 4 sends the instruction to the vehicle body controller 5 in a LIN message mode; after the vehicle body controller 5 receives the message, the message is analyzed, and the specific instruction sent to the vehicle body controller 5 by the radio frequency signal receiving device 4 is determined through the comparison of message instructions in the LIN protocol.
After the command analysis is completed, the vehicle body controller 5 performs corresponding target load control operations, such as unlocking and locking of a door lock, opening and closing of a trunk, keyless entry, keyless start and the like, according to the radio frequency signal receiving device 4. Or, controlling the corresponding target load function execution signal to be set. After the load control operation or signal setting is completed, the vehicle body controller 5 sends a message to the electronic control test cabinet 2 through the LIN bus.
After receiving the information fed back by the vehicle body controller 5, the electric control test cabinet 2 analyzes the message information of the vehicle body controller 5 according to a LIN protocol pre-built between the electric 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 command sent from the body controller 5 to the electronically controlled test cabinet 2 is to complete or not complete the control operation of the specific demand load. And the electronic control test cabinet 2 analyzes the message according to the protocol, so that a final execution result of the vehicle body controller 5 can be obtained. If the electronic control test cabinet 2 determines that the vehicle body controller 5 has correctly performed the control operation on the specific demand load, the tests on the electronic control test cabinet 2 and the radio frequency test cabinet 1 are 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 outwards, and after the vehicle body controller 5 executes a load control operation, if the door is unlocked correctly, the vehicle body controller 5 sets a flag bit in the message to 1 and sends the flag bit to the electronic control test cabinet 2; otherwise, the 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 of entering the real-time acquisition and analyzing the radio frequency instruction through the network port data transmission mode, specifically, the radio frequency test cabinet 1 receives the radio frequency instruction through the radio frequency antenna 13 and analyzes the signal to obtain the required function in the instruction carried in the radio frequency instruction, and further judges whether the cause of the abnormality is an instruction error carried in the radio frequency instruction. Specifically, there is at least one of the following reasons for causing the target load to perform abnormality: 1. the radio frequency signal receiving device 4 receives the instruction error carried in the radio frequency; 2. if a load which is physically connected with the vehicle body controller 5 exists, a control instruction sent 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 body controller 5, the body controller 5 is in error when the corresponding load execution function signal is set. The radio frequency test cabinet 1 performs the detection and judgment process, so that whether the reason for the abnormal execution of the target load function caused by the fault of the radio frequency signal transmitting device 3 can be effectively eliminated and positioned. For example, the radio frequency signal transmitting device 3 is a remote control key, the remote control key transmits a wireless radio frequency instruction carrying a door unlocking instruction outwards, and if the radio frequency test cabinet 1 analyzes that the required function in the instruction transmitted by the remote control key is door unlocking. The reason for incorrect unlocking of the vehicle door can be determined not to be the remote control key, and the remote control key fault can be eliminated.
Meanwhile, in the application, the radio frequency test cabinet 1 can store the collection and analysis result in the radio frequency test cabinet 1 locally, if the final execution result of the vehicle body controller 5 is inconsistent with the actual triggering expected result, the electronic control test cabinet 2 can tell the radio frequency test cabinet 1 to transmit the analyzed result to the electronic control test cabinet 2 in a network port data transmission mode, and the analyzed result is presented to a user for positioning the problem.
For the above-mentioned radio frequency test cabinet 1, it includes a receiving and transmitting module 12 and a first power module 11 for supplying power to the receiving and transmitting module 12, where the receiving and transmitting module 12 is configured to receive signals from the electronic control test cabinet 2, receive radio frequency commands transmitted by the radio frequency signal transmitting device 3 through the radio frequency antenna 13, and detect the radio frequency commands to determine whether the cause of the abnormal execution of the target load function 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 comprises: PXIE chassis 102; the first programmable power board 101 and the PXIE control board 103 which are arranged in the PXIE chassis 102 are a radio frequency measurement board 104 for collecting and analyzing radio frequency instructions, a radio frequency switch board 105 for receiving man-machine control signals, a UPS power board 106 for performing direct current to alternating current, and the radio frequency measurement board 104 and the radio frequency switch board 105 are both connected with the PXIE control board 103. After the current output by the first programmable power board 101 is subjected to direct current-alternating current conversion by the UPS power board 106, the PXIE control board 103, the radio frequency measurement board 104 and the radio frequency switch board 105 are powered; the radio frequency switch board 105 is configured to receive a touch signal of a user, and send an enabling signal to the PXIE control board 103, so that the PXIE control board 103 turns on or 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 collect the radio frequency command through the radio frequency antenna 13, and detects the radio frequency command to determine whether the reason for causing the abnormal execution of the target load function is a failure 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, the electronic control test cabinet comprises an input and output control module 22 and a second power supply 21 for supplying power to the input and output control module 22, wherein the input and output control module 22 is used for performing signal interaction with the receiving and sending module 12, the upper computer 6 and the vehicle body controller 5. For the physical components of the apparatus of fig. 4, the electronically controlled test cabinet 2 comprises: a second programmable power board 201, a power control box 202 and a power board 204 connected in sequence; an ECU interface box 203 connected to the vehicle body controller 5; load measurement board 205 connected to the ECU interface box 203 and the PXIE control board 103, respectively; a communication bus board card 206 connected between the radio frequency signal receiving device 4 and the vehicle body controller 5, wherein the communication bus board card 206 is connected with the load measuring board card 205; the second programmable power board 201 outputs current under the control of the power control box 202, and supplies power to the ECU interface box 203 and the load measurement board 205 through the power 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 the target load is abnormal in function execution; if the PXIE control board card 103 is abnormal, sending a detection signal to the PXIE control board card 103; the communication bus board 206 collects the wired command transmitted on the signal line between the radio frequency signal receiving device 4 and the vehicle body controller 5, and forwards the wired command to the load measurement board 205, so that the load measurement board 205 further determines whether the cause of the abnormal execution of the load function is the failure of the radio frequency signal receiving device 4 according to the wired command. The second programmable power board 201, the power control box 202, and the power board 204 constitute the second power module 21, and the remaining boards constitute the input and output control module 22. The second programmable power board 201 has a plurality of current output channels, which channels 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 rf signal transmitting device 3 as a remote key for example, the test system mainly includes the following steps during the test:
step 401, a user controls the electric control test cabinet 2 in the upper computer 6 to check and accept the remote control key function;
step 402, a remote control key transmits a wireless radio frequency instruction for unlocking a vehicle door outwards;
step 403, the radio frequency signal receiving device 4 receives the radio frequency command, 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 processing to the vehicle body controller 5; otherwise, ending the flow;
step 404, the vehicle body controller 5 receives and analyzes the wired command of the radio frequency signal receiving device 4, and sets the corresponding door lock unlocking signal to be valid; after finishing setting, the vehicle body controller 5 sends a message signal to the electric control test cabinet 2;
step 405, the electronic control test cabinet 2 analyzes the message sent by the vehicle body controller 5, and determines whether the vehicle door is unlocked correctly according to the flag bit of the message; if the unlocking is not correct, a message signal is sent to the radio frequency test cabinet 1; otherwise, ending the flow;
step 406, the radio frequency test cabinet 1 receives and analyzes the message sent by the electronic control test cabinet 2, collects and analyzes the radio frequency command sent by the remote control key according to the command in the message, judges whether the radio frequency command is a correct door unlocking command, if yes, then step 407 is entered, information that the radio frequency signal transmitting device 3 is not faulty is fed back to the electronic control test cabinet 2 (i.e. a feedback signal with a normal detection result is sent to the electronic control test cabinet 2), and step 409 is entered again; otherwise, step 408 is entered, the information of the failure of the radio frequency signal transmitting device 3 is fed back to the electronic control test cabinet 2, and step 412 is entered;
step 409, after receiving the information that the radio frequency signal transmitting device 3 does not fail and fed back by the radio frequency test cabinet 1, the electronic control test cabinet 2 can remove the failure of the radio frequency signal transmitting device 3; at this time, the electronic control test cabinet 2 collects whether the wired command sent to the vehicle body controller 5 by the radio frequency signal receiving device 4 through the communication bus board 206 is a correct command, if not, step 411 is entered, and the radio frequency signal receiving device 4 is determined to be faulty; otherwise, step 410 is entered, and the fault of the rf signal receiving apparatus 4 may be further removed;
step 412, removing the remote key of the entity, and establishing connection between the upper computer 6 and the radio frequency signal receiving device 4;
step 413, the upper computer 6 transmits the door unlocking signal which simulates the real remote key to the radio frequency signal receiving device 4, meanwhile, the radio frequency signal receiving device 4 converts the analog signal transmitted by the upper computer into a wired instruction and transmits the wired instruction to the vehicle body controller through the LIN bus, and then step 409 is performed to further confirm whether the radio frequency signal receiving device 4 fails.
The above-mentioned flow can quickly determine whether the radio frequency signal transmitting device 3 as the radio frequency signal transmitting end and the radio frequency signal receiving device 4 as the radio frequency signal receiving end are malfunctioning.
In order to improve the detection accuracy of the rf signal transmitting device 3, a step for repeatedly confirming the failure of the rf signal transmitting device 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 contents of step 414 are as follows: removing the remote key of the entity, establishing connection between the upper computer 6 and the radio frequency signal receiving device 4, sending a radio frequency command simulating a vehicle door unlocking signal through the radio frequency signal receiving device 4 on the upper computer 6, and repeating the steps 403 to 406 to repeatedly confirm that the radio frequency signal transmitting device 3 is not failed. The flow provided in fig. 3 more precisely eliminates the malfunction of the radio frequency signal transmitting device 3 as the radio frequency signal transmitting end than in fig. 2.
According to the system provided by the embodiment, when the radio frequency test is carried out, the radio frequency test function is integrated on the basis of the electric control test cabinet 2, and when the load is found to not execute the function instruction of the radio frequency signal transmitting device 3 correctly, whether the radio frequency instruction is incorrect or not is checked by the radio frequency test cabinet 1, so that the fault of the radio frequency signal transmitting device 3 can be eliminated; meanwhile, after determining whether the radio frequency signal transmitting device 3 is faulty or not, it can be further determined whether the radio frequency signal receiving device 4 serving as a signal receiving end is faulty or not, so as to achieve the effect of accurately determining the problem section causing the load to incorrectly perform the function. Meanwhile, the fusion of the two test cabinets is triggered and the result is judged through the upper computer software, 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 related to radio frequency signals based on the above, before performing a test, the test system is required to be built, and each component is correctly connected, where the method includes the following steps:
step 301, the radio frequency signal receiving device 4 receives the radio frequency command transmitted by the radio frequency signal transmitting device 3, converts the radio frequency command into a wired command, and transmits the wired command to the vehicle body controller 5 through a signal line.
The wireless radio frequency instruction is sent out 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, so as to agree on which of the transmitted radio frequency instructions are carried. 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 prestored commands. If yes, the signal is converted, and the converted wired command is forwarded to the vehicle body controller 5 through the LIN bus.
In step 302, the body controller 5 controls the target load to perform function execution according to the wired command, 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 sends a control signal to enable the vehicle body controller to perform function execution on a target load with an entity connection relation; alternatively, the target load is indicated as having completed the function execution by setting a function execution signal representing the target load. Then, the 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 target load is abnormal in function execution according to the load function execution feedback signal; if the detection signal is abnormal, the detection signal is transmitted to the radio frequency test cabinet 1.
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 reason for the abnormal execution of the target load function is the failure of the radio frequency signal transmitting device 3.
Specifically, the radio frequency test cabinet 1 determines whether the target load is not performing the function correctly due to the instruction error carried in the radio frequency instruction according to the radio frequency instruction. If the instruction carried in the radio frequency instruction is determined to be correct, the radio frequency signal error sent by the radio frequency signal sending device 3 can be eliminated.
If the radio frequency command indicates that the reason for the abnormal execution of the target load function is not the failure of the radio frequency signal transmitting device 3, the method further includes:
step 305, a radio frequency analog instruction is sent to the radio frequency signal receiving device 4 through the upper computer 6, and the radio frequency signal receiving device 4 converts the radio frequency analog instruction into a wired instruction and then forwards the wired instruction to the vehicle body controller 5; ,
steps 301 to 304 are repeated to repeatedly determine whether the cause of the abnormal performance of the target load function is a failure of the rf signal transmitting device 3.
The purpose of this step 305 is to repeatedly confirm whether the radio frequency signal transmitting device 3 is malfunctioning, improving the detection accuracy.
Further, if the radio frequency test cabinet 1 determines that the reason for the abnormal performance of the target load function is not the failure of the radio frequency signal transmitting device 3, the method further includes:
step 306, the radio frequency test cabinet 1 sends a feedback signal with normal detection result to the electric control test cabinet 2;
step 307, the electronic control test cabinet 2 collects a wired instruction forwarded to the vehicle body controller 5 by the radio frequency signal receiving device 4 according to the feedback signal;
in step 308, the electronic control test cabinet 2 determines, according to the wired command, whether the reason for the abnormal execution of the target load function is the failure of the radio frequency signal receiving device 4.
Specifically, the error of the instruction is judged through the 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 in error; the wired command is correct and it is determined that the radio frequency signal receiving device 4 has not failed. If it is determined in step 308 that the rf signal receiving apparatus 4 has not failed, the failure of the rf signal transmitting apparatus 3 as the signal transmitting end and the failure of the rf signal receiving apparatus 4 as the signal receiving end are eliminated, and further, it can be determined that the cause of the incorrect execution of the function by the target load is due to the error of the execution of the function by the body controller 5 as the control end and the target load itself.
If the electronically controlled test cabinet 2 determines that the cause of the abnormal performance of the target load function is a failure of the radio frequency signal transmitting device 3, the method further comprises:
step 309, a wireless radio frequency analog command is sent to the radio frequency signal receiving device 4 through the upper computer 6, and the radio frequency signal receiving device 4 converts the wireless radio frequency analog command into a wired command and forwards the wired command to the vehicle 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 the failure 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 (9)
1. A functional test system involving radio frequency signals, comprising:
the radio frequency test cabinet (1) and the electric control test cabinet (2) are connected through signal wires;
a radio frequency signal transmitting device (3) for transmitting a radio frequency command outwards;
radio frequency signal receiving means (4) for receiving said radio frequency instructions;
a vehicle body controller (5) connected with the electric control test cabinet (2) and the radio frequency signal receiving device (4) through signal wires;
the radio frequency signal receiving device (4) receives the radio frequency instruction, converts the radio frequency instruction into a wired instruction and sends the wired instruction to the vehicle body controller (5) through a signal line;
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 target load is abnormal in function execution or not according to the received load function execution feedback signal; if the radio frequency test cabinet is abnormal, the electric control test cabinet (2) sends a detection signal to the radio frequency test cabinet (1);
the radio frequency test cabinet (1) detects the radio frequency instruction according to the detection signal, and determines whether the reason for the abnormal execution of the target load function is the failure of the radio frequency signal transmitting device (3).
2. The test system of claim 1, wherein the test system further 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);
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 for causing the abnormal execution of the target load function is not the failure of the radio frequency signal transmitting device (3) so as to repeatedly determine whether the reason for causing the abnormal execution of the target load function is the failure of the radio frequency signal transmitting device (3).
3. The test system of claim 2, wherein the test system further comprises:
a radio frequency shielding box (7), wherein the radio frequency signal transmitting device (3) is arranged in the radio frequency shielding box (7);
the radio frequency test cabinet (1) receives a radio frequency instruction sent outwards by the radio frequency signal transmitting device (3) through the radio frequency antenna (13), the radio frequency antenna (13) is connected with the radio frequency test 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, characterized in that the radio frequency test cabinet (1) comprises:
a PXIE chassis (102);
the device comprises a first programmable power supply board (101), a PXIE control board (103), a radio frequency measurement board (104), a radio frequency switch board (105) and a UPS power supply board (106) which are arranged in a PXIE chassis (102);
after the current output by the first programmable power board (101) is converted by the UPS power board (106), the current is supplied 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 used for sending an enabling signal to the PXIE control board card (103) so that the PXIE control board card (103) can start or stop a radio frequency instruction detection function;
when the PXIE control board (103) receives the detection signal sent by the electric control test cabinet (2), the radio frequency measurement board (104) is controlled to acquire the radio frequency instruction through the radio frequency antenna (13), and the radio frequency instruction is detected to determine whether the reason for causing the abnormal execution of the target load function is the failure of the radio frequency signal transmitting device (3).
5. The test system according to claim 4, wherein the electrically controlled test cabinet (2) comprises:
the second programmable power supply board (201), the power supply control box (202) and the power supply board (204) are connected in sequence;
an ECU interface box (203) connected to the vehicle body controller (5);
a load measurement board (205) connected to the ECU interface box (203) and the PXIE control board (103) respectively;
a communication bus board card (206) connected between the radio frequency signal receiving device (4) and the vehicle body controller (5), wherein the communication bus board card (206) is connected with the load measuring board card (205);
the second programmable power board (201) outputs current under the control of the power control box (202) and supplies power to the ECU interface box (203) and the load measurement board (205) through the power board (204);
the load measurement board card (205) receives a load function execution feedback signal sent by the vehicle body controller (5) through the ECU interface box (203) and judges whether the target load has abnormal function execution or not; if the PXIE control board card is abnormal, sending a detection signal to the PXIE control board card (103);
the communication bus board card (206) collects wired instructions transmitted on a signal line between the radio frequency signal receiving device (4) and the vehicle body controller (5), and forwards the wired instructions to the load measurement board card (205), so that the load measurement board card (205) further determines whether the reason for causing abnormal execution of the load function is the failure of the radio frequency signal receiving device (4) according to the wired instructions.
6. A functional test method related to radio frequency signals, applied to the functional test system related to radio frequency signals as claimed in claim 5, characterized in that the method comprises:
step 301, a radio frequency signal receiving device (4) receives a radio frequency instruction which is transmitted outwards by a radio frequency signal transmitting device (3), converts the radio frequency instruction into a wired instruction and then transmits the wired instruction to the vehicle body controller (5) through a signal wire;
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 electric control test cabinet (2);
step 303, the electric control test cabinet (2) judges whether the target load has abnormal function execution or not according to the load function execution feedback signal; if the detection signal is abnormal, transmitting the detection signal to the radio frequency test cabinet (1);
and step 304, the radio frequency test cabinet (1) detects the radio frequency instruction according to the detection signal, and determines whether the reason for the abnormal execution of the target load function is the failure of the radio frequency signal transmitting device (3).
7. The test method according to claim 6, wherein if the radio frequency test cabinet (1) determines that the cause of the target load function execution abnormality is not a failure of the radio frequency signal emitting device (3), the method further comprises:
step 305, a wireless radio frequency simulation instruction is sent to the radio frequency signal receiving device (4) through the upper computer (6), and the radio frequency signal receiving device (4) converts the wireless radio frequency simulation instruction into a wired instruction and then forwards the wired instruction to the vehicle body controller (5);
steps 301 to 304 are repeated to repeatedly determine whether the cause of the abnormality in the performance of the target load function is a failure of the radio frequency signal transmitting device (3).
8. The method according to claim 6 or 7, wherein if the radio frequency test cabinet (1) determines that the cause of the target load function execution abnormality is not a failure of the radio frequency signal emitting device (3), the method further comprises:
step 306, the radio frequency test cabinet (1) sends a feedback signal with normal detection result to the electric control test cabinet (2);
step 307, the electronic control test cabinet (2) collects a wired instruction forwarded 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 reason for abnormal execution of the target load function is the failure of the radio frequency signal receiving device (4) according to the wired instruction.
9. The test method according to claim 8, wherein if the electronically controlled test cabinet (2) determines that the cause of the target load function execution abnormality is a failure of the radio frequency signal emitting device (3), the method further comprises:
step 309, a wireless radio frequency simulation instruction is sent to the radio frequency signal receiving device (4) through the upper computer (6), and the radio frequency signal receiving device (4) converts the wireless radio frequency simulation instruction into a wired instruction and then forwards the wired instruction to the vehicle body controller (5);
step 310, the electronic control test cabinet (2) collects the wired instructions and determines whether the reason for the abnormal execution of the target load function includes the failure of the radio frequency signal receiving device (4).
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