Method and apparatus for testing a host of a positioning and speed measurement system

Abstract

A method and apparatus for testing a positioning and speed measurement system host includes the steps of: acquiring a first simulation signal (S101), where the first simulation signal is acquired by simulating an absolute position sensor and a relative position sensor (S101); transmitting the first simulation signal to a positioning and speed measurement system host under test (S102); acquiring a first result calculated by the positioning and speed measurement system host under test based on the first simulation signal (S103); acquiring a second result calculated based on the first simulation signal (S104), where the second result is a reference result corresponding to the first simulation signal (S104); and determining that the positioning and speed measurement system host under test is abnormal if a comparison result between the first result and the second result exceeds a predetermined range (S105). The method allows testing of a positioning and speed measurement system host without absolute position sensor or relative position sensor components, and the testing process is simple and easy to perform, eliminating the need for a large-scale investment in building a testing environment and saving costs.

Description

[Technical field]

[0001] This application claims priority to a Chinese patent application filed with the China Patent Office on January 8, 2021, bearing application number 202110023832.5 and entitled "Test method and apparatus for positioning speed measurement system host", the entire contents of which are incorporated herein by reference.

[0002] The present invention relates to the field of testing, and in particular to a method and apparatus for testing a positioning and velocity measurement system host. [Background technology]

[0003] At present, in the process of manufacturing and researching and developing the host positioning and speed measurement system for high-speed magnetic levitation trains, it is necessary to carry out tests to verify its function and performance.

[0004] In the prior art, there are mainly two methods for testing the host of the positioning and speed measurement system. The first method is as follows: the absolute position sensor and the relative position sensor are arranged on a small car for testing in a laboratory, and a long stator is provided around the small car according to the actual running environment of a magnetic levitation train. As the small car moves, the absolute position sensor and the relative position sensor located on the small car obtain relevant signals and output them to the host of the positioning and speed measurement system. The host processes the signals transmitted from the absolute position sensor and the relative position sensor, and then transmits the processing results to the operation control system, the wireless system, and the control and diagnosis system, and the processing results generated by the host are observed from other system terminals. The other method is as follows: the excitation environment when the relative position sensor passes through the long stator is simulated by using a cogging simulation coil. The excitation environment when the sign board passes through a sign board in a high-speed situation is simulated by using a sign board simulation coil. The relative position sensor and the absolute position sensor are operated by excitation by the simulation coil, and the generated signals are transmitted to the host of the positioning and speed measurement system and used to verify the function of the host. Summary of the Invention [Problem to be solved by the invention]

[0005] These two methods require a large investment to build a test environment. For example, absolute position sensors, relative position sensors and positioning signboards need to be installed at the same time. The test process is complicated, and the investment cost for the test environment is large, resulting in high costs.

[0006] In view of this, the present inventor creates the solution by professionally designing a testing method and device for a positioning and velocity measurement system host.

[0007] The present invention aims to provide a method and device for testing a positioning and speed measurement system host in order to solve the problems of complicated testing process, large investment costs for the testing environment, and high costs in testing the positioning and speed measurement system host of a high-speed magnetic levitation train. [Means for solving the problem]

[0008] In order to achieve the above objectives, the technical solutions adopted by the present invention are as follows: A method for testing a positioning and speed measurement system host, comprising: obtaining a first simulation signal, the first simulation signal being obtained by simulating an absolute position sensor and a relative position sensor; transmitting the first simulation signal to a positioning and velocity measurement system host under test; obtaining a first result calculated by the positioning and velocity measurement system host under test based on the first simulation signal; obtaining a second result calculated based on the first simulation signal, the second result being a reference result corresponding to the first simulation signal; and determining that the positioning and speed measurement system host being tested is abnormal when a comparison result between the first result and the second result exceeds a first preset range.

[0009] Preferably, the step of obtaining a second result calculated based on the first simulation signal comprises: calculating a second result based on the first simulation signal; or receiving a second result calculated by a reference positioning test system host having a normal positioning speed measurement function based on the first simulation signal;

[0010] Preferably, the comparison result between the first result and the second result exceeding a preset range is determined by: The difference between the first result and the second result is greater than or equal to a first threshold, and / or the ratio between the first result and the second result is greater than or equal to a second threshold.

[0011] Preferably, the first simulation signal is The signals are obtained by simulating the QSPI that interacts between the relative position sensor and the positioning and speed measurement system host, the cogging pulse square wave output from the relative position sensor, the diagnostic information output from the absolute position sensor, and the signboard information transmitted from the absolute position sensor.

[0012] Preferably, the method comprises the steps of: obtaining a second simulation signal, the second simulation signal being obtained by simulating another system, the other system including at least one of an on-board navigation control system, an on-board wireless system, and an on-board control and diagnostic system; transmitting the second simulation signal to the positioning and velocity measurement system host under test; obtaining a third result calculated by the positioning and velocity measurement system host under test based on the second simulation signal; obtaining a fourth result calculated based on the second simulation signal, the fourth result being a reference result corresponding to the second simulation signal; The method further includes a step of determining that the positioning and speed measurement system host to be tested is abnormal when a comparison result between the third result and the fourth result exceeds a second preset range.

[0013] The present invention further provides a test device for a positioning test system host, the device comprising: a first simulation signal acquiring unit for acquiring a first simulation signal, the first simulation signal being acquired by simulating an absolute position sensor and a relative position sensor; a first simulation signal sending unit for sending the first simulation signal to a host of the positioning and speed measurement system to be tested; a first result calculation unit for obtaining a first result calculated by the positioning and velocity measurement system host under test based on the first simulation signal; a second result calculation unit for obtaining a second result calculated based on the first simulation signal, the second result being a reference result corresponding to the first simulation signal; and a first judgment unit that judges that the positioning speed measurement system host to be tested is abnormal if a comparison result between the first result and the second result exceeds a first preset range.

[0014] Furthermore, the second result calculation unit: a second result calculation subunit for calculating a second result based on the first simulation signal; and a second result acquiring unit for receiving a second result calculated by a reference positioning test system host having a normal positioning speed measuring function based on the first simulation signal.

[0015] Furthermore, the comparison result between the first result and the second result exceeding a preset range is The difference between the first result and the second result is greater than or equal to a first threshold, and / or the ratio between the first result and the second result is greater than or equal to a second threshold.

[0016] Preferably, the first simulation signal is The signals are obtained by simulating the QSPI that interacts between the relative position sensor and the positioning and speed measurement system host, the cogging pulse square wave output from the relative position sensor, the diagnostic information output from the absolute position sensor, and the signboard information transmitted from the absolute position sensor.

[0017] Preferably, the apparatus comprises: a second simulation signal acquiring unit for acquiring a second simulation signal, the second simulation signal being acquired by simulating another system, the other system including at least one of an in-vehicle driving control system, an in-vehicle wireless system, and an in-vehicle control and diagnostic system; a second simulation signal sending unit for sending the second simulation signal to the positioning and speed measurement system host under test; a third result calculation unit for obtaining a third result calculated by the positioning and velocity measurement system host under test according to the second simulation signal; a fourth result calculation unit for obtaining a fourth result calculated based on the second simulation signal, the fourth result being a reference result corresponding to the second simulation signal; and a second judgment unit that judges that the positioning speed measurement system host to be tested is abnormal when a comparison result between the third result and the fourth result exceeds a second preset range. Effect of the Invention

[0018] As can be seen from the above technical solution, the method for testing a positioning speed measurement system host provided by the present invention can obtain a first simulation signal, the first simulation signal is obtained by simulating an absolute position sensor and a relative position sensor, and the first simulation signal is sent to a positioning speed measurement system host to be tested, and the positioning speed measurement system host to be tested obtains a first result calculated based on the first simulation signal, and obtains a second result calculated based on the first simulation signal, the second result is a reference result corresponding to the first simulation signal, and when the comparison result between the first result and the second result exceeds a preset range, the positioning speed measurement system host to be tested is determined to be abnormal. In this way, in the embodiment of the present application, even if it does not have an absolute position sensor and a relative position sensor component, the positioning speed measurement system host can be tested, and the test process is simple and easy to perform, and there is no need to build a test environment with a large investment, which saves costs.

[0019] In order to more clearly describe the technical solutions in the embodiments of the present invention or the prior art, the following briefly introduces drawings necessary for describing the embodiments or the prior art. Obviously, the drawings described below are only the embodiments of the present invention, and those skilled in the art can obtain other drawings based on the drawings provided on the premise that they do not make efforts worthy of inventive step. [Brief description of the drawings]

[0020] [Figure 1] 4 is a flowchart of a testing method for a positioning speed measurement system host provided by an embodiment of the present application; [Diagram 2]FIG. 2 is a structural diagram of a test cabinet of a positioning speed measurement system host test device provided by an embodiment of the present application; [Diagram 3] FIG. 2 is a schematic diagram of a test device for a positioning and speed measurement system host provided by an embodiment of the present application. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0021] In order to allow those skilled in the art to better understand the technical solution of the present invention, the following clearly and completely describes the technical solutions in the embodiments of the present invention in combination with the drawings of the embodiments of the present invention, obviously, the described embodiments are not all the embodiments, but only some of the embodiments of the present invention. On the premise that those skilled in the art do not make any inventive efforts based on the embodiments of the present invention, all other embodiments obtained fall within the protection scope of the present invention.

[0022] Currently, in the process of manufacturing, research and development of the positioning and speed measurement system host for high-speed magnetic levitation trains, testing is required to verify its function and performance. In the prior art, there are mainly two ways to test the positioning and speed measurement system host:

[0023] The first method is as follows: the absolute position sensor and the relative position sensor are placed on the test car in the laboratory, and a long stator is installed around the car according to the actual running environment of the magnetic levitation train. As the car moves, the absolute position sensor and the relative position sensor located on the car obtain the relevant signal and output it to the positioning and speed measurement system host, which processes it and then transmits it to the operation control system, the wireless system, the control and diagnosis system, and the data generated by the host is observed by other system terminals. In this method, when testing the positioning and speed measurement system host, it is necessary to simulate the actual running environment of the magnetic levitation train to build a test platform, and to simultaneously install the absolute position sensor, the relative position sensor and the positioning signboard. The investment cost of the test environment is large, and it can only test the running conditions in a low-speed running environment, and cannot cover various running conditions in the full speed range of 600km / h.

[0024] The other method is as follows: a cogging simulation coil is used to simulate the excitation environment when the relative position sensor passes the long stator; a signboard simulation coil is used to simulate the excitation environment when the signboard passes in a high-speed situation. The relative position sensor and the absolute position sensor are operated by the excitation of the simulation coil, and the generated signal is transmitted to the positioning speed measurement system host and used to verify the function of the host. This method does not require the construction of a motion platform and can cover the operating environment in the entire speed range, but it requires the absolute position sensor, the relative position sensor and the positioning signboard to be equipped at the same time. In addition, it is necessary to provide a cogging simulation coil tool and its controller, and a signboard simulation coil tool and its controller. The simulation tool itself often has errors, which will affect the function judgment when testing the positioning speed measurement system host.

[0025] In order to solve the above technical problems, the embodiments of the present application provide a method and apparatus for testing a positioning speed measurement system host, which can test a positioning test system even if it does not have an absolute position sensor or a relative position sensor component, and the test process is simple and easy to implement, and there is no need to make a large investment to build a test environment, thus saving costs.

[0026] Various non-limiting embodiments of the present invention will be described in detail below in conjunction with the drawings.

[0027] For convenience of explanation, the hardware scenario of the embodiment of this application is introduced below.

[0028] In an embodiment of the present application, the positioning and speed measurement system of the high-speed magnetic levitation train includes a positioning and speed measurement system host (ORTPR), a relative position sensor (NUT), an absolute position sensor (INK) and a positioning signboard (LRL) fixed on the railroad track. The number of the absolute position sensor may be two, and the number of the relative position sensor may be two.

[0029] A long stator is provided around the train, and the long stator has a cogging structure. When the train moves, the relative position sensor on the train detects the top surface of the long stator with the cogging structure and outputs two signals that change periodically with the change in the cogging position, and the absolute position sensor on the train scans a passive positioning sign board fixed along the railway line to obtain code information on the positioning sign board, thereby obtaining absolute position information of the train. The positioning and speed measurement system host can obtain and process the information transmitted from the relative position sensor and the absolute position sensor to obtain the processing result, and can transmit the processing result to the on-board wireless system, the on-board operation control system, and the on-board control and diagnosis system to realize monitoring and control of the train.

[0030] The positioning and speed measurement system host is composed of a positioning electronic unit (ORT) and a magnetic pole phase angle processing unit (PRW), and processes the corresponding signals.

[0031] In the embodiment of the present application, when testing the positioning speed measurement system host, instead of disposing a long stator, a positioning signboard, an absolute position sensor, and a relative position sensor, the signal generated by the relative position sensor after passing the long stator cogging and for transmission to the positioning speed measurement system host, and the signal generated by the absolute position sensor after passing the signboard and for transmission to the positioning speed measurement system host are simulated, so that the positioning speed measurement system host obtains a processing result according to the received signal, and determines whether the positioning speed measurement system host is abnormal according to the processing result. Of course, if there is an error in the processing result, it is considered that the positioning speed measurement system host is abnormal. That is, in the embodiment of the present application, even if there is only a test object without the absolute position sensor and the relative position sensor components, the positioning test system can be tested, and the testing process is simple and easy to perform, and there is no need to build a test environment with a large investment, which saves costs.

[0032] The test for the positioning and speed measurement system host is performed by a test cabinet. Referring to FIG. 1, the test cabinet includes a main control module and a test cable. The test cable is connected to the positioning and speed measurement system host to communicate with the positioning and speed measurement system host. The test cable is pulled out from the inside of the test cabinet, and the other end is an aircraft plug, which matches the connector of the object under test (positioning and speed measurement system host). There are 10 test cables in total, which are marked as X101 to X110. The main control module is the core of the calculation processing of the entire test system, and can test the positioning and speed measurement system host, specifically, it generates a simulation signal to verify the processing result from the positioning and speed measurement system host to determine whether the function of the positioning system host is normal.

[0033] The main control module may include a CPU processor, and may further include a case, an RS485 interface card for synchronizing the transmission and reception of RS485 signals, an RS232 serial card for transmitting and receiving RS232 communication data, a QSPI interface card for processing QSPI signals, a CAN interface card for CAN communication, a DI / DO module for inputting and outputting digital quantities, and an AI / AO module for inputting and outputting analog quantities.

[0034] The test cabinet may further include a power supply module, a signal conditioning module, a display, a keyboard, etc., and the power supply module controls the power input (220V) of the entire test system to supply power to each module inside the test system. The signal conditioning module conditions the signal generated by the main control module into a signal form that can be received by the positioning and speed measurement system host, and can also condition the signal fed back from the positioning and speed measurement system host into a signal form that can be received by the main control module, and the signals that mainly process the physical layer include RS485 differential signals, TTY current loop signals, etc. The display shows the test process and results. The keyboard is used for the tester to input test commands.

[0035] Exemplary Methods Refer to FIG. 2, which is a flowchart of a host testing method for a positioning and speed measurement system provided by an embodiment of the present application, which includes the following steps: S101: Obtain a first simulation signal, where the first simulation signal is obtained by simulating an absolute position sensor and a relative position sensor.

[0036] In the embodiment of the present application, the absolute position sensor and the relative position sensor are simulated under different operating conditions to obtain first simulation signals corresponding to different operating conditions, where the operating conditions include train speed, train direction, whether the sensor is normal, etc. For example, in an operating condition where the train speed is 300km / h and the train direction is east, there may be a corresponding first simulation signal.

[0037] Specifically, the first simulation signal may be a signal obtained by simulating a QSPI that interacts between the relative position sensor and the positioning speed measurement system host, a cogging pulse square wave output from the relative position sensor, diagnostic information output from the absolute position sensor, and signboard information transmitted from the absolute position sensor.

[0038] In the embodiment of the present application, the test cabinet can obtain a first simulation signal by simulating the absolute position sensor and the relative position sensor, so that the positioning and speed measurement system can be tested without needing to build a test environment equipped with the absolute position sensor and the relative position sensor, thereby reducing the test cost; the error of the signal obtained by simulating the test cabinet is smaller than that of the signal obtained by actually measuring by disposing the absolute position sensor and the relative position sensor; and the simulation signal can cover various driving conditions in the entire speed range of 600 km / h, making the test more comprehensive.

[0039] Here, the specific operating conditions of the embodiments of the present application can be determined by those skilled in the art according to the actual conditions, and no specific limitations are provided here.

[0040] Specifically, the first simulation signal may correspond to the signals output from the two absolute position sensors and the two relative position sensors, the generated first simulation signal is determined by performing a simulation installation on the test cabinet, and the installation of the simulation parameters is divided into three parts: the relative installation of the absolute position sensor, the relative installation of the relative position sensor, and the system installation. The relative installation of the absolute position sensor includes sign board information (which is installed according to the needs of the test, and multiple sign board information may be installed), sign board interval, the start-up simulation of absolute position sensor 1, the start-up simulation of absolute position sensor 2, and the simultaneous start-up simulation of absolute position sensor 1 and absolute position sensor 2, the relative installation of the relative position sensor includes sine / cosine amplitude value, relative position sensor diagnostic bit, the start-up simulation of relative position sensor 1, the start-up simulation of relative position sensor 2, and the simultaneous start-up simulation of relative position sensor 1 and relative position sensor 2, and the system installation includes train speed, train direction, ORT position code, and PRW position code.

[0041] The operation of generating the first simulation signal is performed after the test cables of the test cabinet are connected to the object under test (positioning test system host), for example, after the test cables X101 to X110 are accurately connected to the corresponding interfaces of the object under test (positioning speed measurement system host) according to the cable numbers, and after the test cabinet is powered on, started up, operated, and simulation parameters are set.

[0042] S102: Transmit a first simulation signal to a positioning and velocity measurement system host under test.

[0043] After generating the first simulation signal, the first simulation signal can be sent to the positioning and speed measurement system host to be tested. The first simulation signal is specifically a signal obtained by simulating the QSPI interaction between the relative position sensor and the positioning and speed measurement system host, the cogging pulse square wave output from the relative position sensor, the diagnostic information output from the absolute position sensor, and the signboard information sent from the absolute position sensor, and the RS485 differential signal is transmitted and received via the RS485 interface card, and the QSPI signal is transmitted and received via the QSPI interface card.

[0044] The first simulation signal sent to the positioning and speed measurement system host to be tested may be a single piece of data corresponding to the same operating condition, or multiple pieces of data corresponding to multiple operating conditions.

[0045] S103: Obtain a first result calculated by the positioning and velocity measurement system under test based on the first simulation signal.

[0046] In an embodiment of the present application, the positioning and speed measurement system to be tested can receive the first simulation signal, process it, and generate a calculation result (i.e., a first result), and then transmit the first result to the test cabinet through a test cable.

[0047] That is, the test cabinet can generate and transmit a first simulation signal to the positioning speed measurement system to be tested, and can also obtain and receive a first result calculated by the positioning speed measurement system host to be tested based on the first simulation signal, thereby testing the positioning speed measurement system to be tested using the first result.

[0048] When the first simulation signal transmitted to the positioning speed measurement system is a single piece of data corresponding to the same operating situation, the acquired first result corresponds to the operating situation, and when the first simulation signal is multiple pieces of data corresponding to multiple operating situations, the acquired first result is multiple processing results corresponding to the multiple operating situations obtained by processing each of the multiple pieces of data.

[0049] S104: Obtain a second result calculated based on the first simulation signal, where the second result is a reference result corresponding to the first simulation signal.

[0050] In the embodiment of the present application, in order to test whether the positioning speed measurement function of the positioning speed measurement system is normal, it is necessary to compare the first result calculated by the positioning speed measurement system to be tested based on the first simulation signal with the reference result, so the test cabinet further obtains a second result calculated based on the first simulation signal, where the second result is a reference result corresponding to the first simulation signal, and tests the positioning speed measurement system host to be tested by comparing the first result with the second result.

[0051] In the embodiment of the present application, the second result can be obtained in the following two ways: the test cabinet directly calculates the second result based on the first simulation signal, or receives the second result calculated by a reference positioning test system with normal positioning speed measurement function based on the first simulation signal.

[0052] If the test cabinet directly calculates the second result based on the first simulation signal, hardware resources can be saved, and there is no need to separately deploy a reference positioning test system, thereby reducing the investment cost of testing.If the test cabinet receives the second result calculated based on the first simulation signal by the reference positioning test system with normal positioning speed measurement function, the demand for hardware resources of the test cabinet can be reduced.

[0053] Here, S104 may be performed before S102, before S103, or after S103, and those skilled in the art can set it by themselves according to actual needs.

[0054] S105: If the comparison result between the first result and the second result exceeds a first preset range, it is determined that the positioning and speed measurement system host to be tested is abnormal.

[0055] In the embodiment of the present application, if the difference between the first result and the second result is small, it can be determined that the positioning speed measurement function of the positioning speed measurement system is normal. Therefore, if the comparison result between the first result and the second result exceeds a first preset range, it can be determined that the positioning speed measurement system to be tested is abnormal. If the positioning speed measurement system to be tested is abnormal, a test report can be generated for the user to check.

[0056] Specifically, the comparison result between the first result and the second result exceeding the preset range includes that the difference between the first result and the second result is greater than a first threshold, and / or that the ratio between the first result and the second result is greater than a second threshold. Here, the first threshold and the second threshold can be set by those skilled in the art according to the actual situation, and the present application does not specifically limit them.

[0057] In addition, in an embodiment of the present application, the test cabinet may perform at least one of an ORT test, a PRW test, and a CAN diagnostic test on the positioning and speed measurement system to be tested.

[0058] ORT test means that the test cabinet simulates the information interaction between the on-board driving control system and the positioning and speed measurement system host, and selects different operating modes to perform different tests on the ORT of the positioning and speed measurement system host, mainly including positioning and speed measurement mode, intrusion detection mode, ROM detection mode, and RAM detection mode. PRW test means that the test cabinet simulates the on-board wireless system to interact with the positioning and speed measurement system host, and tests the PRW of the positioning and speed measurement system host, and the communication timing can be flexibly set during the test process. CAN test means that the test cabinet simulates the on-board control and diagnosis system to interact with the positioning and speed measurement system host, and tests the CAN diagnosis of the positioning and speed measurement system host, and the test process can be flexibly set the content of CAN messages, the number of communications and the interval time.

[0059] That is to say, the test cabinet can further simulate the information interaction between the on-board driving control system and the positioning and speed measurement system host, the information interaction between the on-board radio system and the positioning and speed measurement system host, and the information interaction between the on-board control and diagnostic system and the positioning and speed measurement system host, to test the performance of the positioning and speed measurement system host. The above ORT test, PRW test and CAN diagnostic test processes can be displayed through the display interface, which has strong visualization and improves the user experience.

[0060] Specifically, a second simulation signal is obtained, and the second simulation signal is obtained by simulating another system, the other system including at least one of an in-vehicle driving control system, an in-vehicle wireless system, and an in-vehicle control and diagnostic system. The second simulation signal obtained by simulating the in-vehicle driving control system or the in-vehicle control and diagnostic system is a TTY current loop signal, and the second simulation signal obtained by simulating the in-vehicle wireless system is an RS485 serial port signal. In the embodiment of the present application, the CAN interface card is used for CAN communication when the test cabinet simulates the in-vehicle control and diagnostic system to interact with the positioning system to be tested.

[0061] Then, a second simulation signal is transmitted to the positioning speed measurement system to be tested, and a third result calculated by the positioning speed measurement system to be tested based on the second simulation signal and a fourth result calculated based on the second simulation signal are obtained, the fourth result is a reference result corresponding to the second simulation signal, and when a comparison result between the third result and the fourth result exceeds a second preset range, the positioning speed measurement system to be tested is determined to be abnormal.

[0062] Specifically, the third result may be obtained by the test cabinet based on the second simulation signal, or may be obtained by the reference positioning speed measurement system host, and the second preset range is determined according to the actual situation.

[0063] After testing of the positioning and speed measurement system under test is completed, the test cabinet can be powered off.

[0064] According to the method provided by the embodiment of the present application, a first simulation signal is obtained, the first simulation signal is obtained by simulating an absolute position sensor and a relative position sensor, and the first simulation signal is sent to a positioning speed measurement system host to be tested, and the positioning speed measurement system host to be tested obtains a first result calculated based on the first simulation signal, and obtains a second result calculated based on the first simulation signal, the second result being a reference result corresponding to the first simulation signal, and when the comparison result between the first result and the second result exceeds a preset range, the positioning speed measurement system host to be tested is determined to be abnormal. In this way, in the embodiment of the present application, even if the absolute position sensor and the relative position sensor components are not provided, the positioning speed measurement system host can be tested, and the test process is simple and easy to perform, and there is no need to build a test environment with a large investment, which saves costs.

[0065] Example Equipment Refer to FIG. 3, which is a schematic diagram of a host test device for a positioning and speed measurement system provided by an embodiment of the present application; A first simulation signal acquiring unit 201 for acquiring a first simulation signal, the first simulation signal being acquired by simulating an absolute position sensor and a relative position sensor; a first simulation signal sending unit 202 for sending the first simulation signal to a positioning and speed measurement system host to be tested; a first result calculation unit 203, which obtains a first result calculated by the positioning and velocity measurement system host under test according to the first simulation signal; a second result calculation unit 204 for obtaining a second result calculated based on the first simulation signal, the second result being a reference result corresponding to the first simulation signal; and a first judgment unit 205 that judges that the positioning speed measurement system host to be tested is abnormal if the comparison result between the first result and the second result exceeds a first preset range.

[0066] Preferably, the second result calculation unit 204 comprises: a second result calculation subunit for calculating a second result based on the first simulation signal; and a second result acquiring unit for receiving a second result calculated by a reference positioning test system host having a normal positioning speed measuring function based on the first simulation signal.

[0067] Preferably, the comparison result between the first result and the second result exceeding a preset range is determined by: The difference between the first result and the second result is greater than or equal to a first threshold, and / or the ratio between the first result and the second result is greater than or equal to a second threshold.

[0068] Preferably, the first simulation signal is The signals are obtained by simulating the QSPI that interacts between the relative position sensor and the positioning and speed measurement system host, the cogging pulse square wave output from the relative position sensor, the diagnostic information output from the absolute position sensor, and the signboard information transmitted from the absolute position sensor.

[0069] Preferably, the apparatus comprises: a second simulation signal acquiring unit for acquiring a second simulation signal, the second simulation signal being acquired by simulating another system, the other system including at least one of an in-vehicle driving control system, an in-vehicle wireless system, and an in-vehicle control and diagnostic system; a second simulation signal sending unit for sending the second simulation signal to the positioning and speed measurement system host under test; a third result calculation unit for obtaining a third result calculated by the positioning and velocity measurement system host under test according to the second simulation signal; a fourth result calculation unit for obtaining a fourth result calculated based on the second simulation signal, the fourth result being a reference result corresponding to the second simulation signal; and a second judgment unit that judges that the positioning speed measurement system host to be tested is abnormal when a comparison result between the third result and the fourth result exceeds a second preset range.

[0070] The installation of each unit or module of the device of the present application can be realized by referring to the method shown in FIG. 1, and no detailed description will be given here.

[0071] According to the device provided by the embodiment of the present application, a first simulation signal can be obtained, the first simulation signal is obtained by simulating the absolute position sensor and the relative position sensor, and the first simulation signal is sent to the positioning speed measurement system host to be tested, and the positioning speed measurement system host to be tested obtains a first result calculated based on the first simulation signal, and obtains a second result calculated based on the first simulation signal, the second result is a reference result corresponding to the first simulation signal, and when the comparison result between the first result and the second result exceeds a preset range, the positioning speed measurement system host to be tested is determined to be abnormal. In this way, in the embodiment of the present application, even if it does not have an absolute position sensor and a relative position sensor component, the positioning speed measurement system host can be tested, and the test process is simple and easy to perform, and there is no need to build a test environment with a large investment, which saves costs.

[0072] Here, each embodiment in this specification is described in a progressive manner, and the same or similar parts between each embodiment may be referred to each other, and each embodiment mainly describes the differences from other embodiments. In particular, the device and system embodiments are basically similar to the method embodiments, so the description thereof is brief, and the relevant parts may be referred to the description of some of the method embodiments. The above-described device and system embodiments are merely schematic, and the units described as individual components may or may not be physically separated, and the components shown as units may or may not be physical units, i.e., they may be located in one place or distributed to multiple network units. According to actual needs, some or all of the modules can be selected to achieve the purpose of the technical solution of this embodiment. Those skilled in the art can understand and implement it without any labor equivalent to an inventive step.

[0073] The above is only one specific embodiment of the present application, but the scope of protection of the present application is not limited thereto, and any modification or replacement that a person skilled in the art can easily think of within the technical scope disclosed in the present application should be included in the scope of protection of the present application. Therefore, the scope of protection of the present application should be in accordance with the scope of protection of the claims.

Claims

1. A method for testing a positioning and speed measurement system host, comprising: a step of the test cabinet generating a first simulation signal, the first simulation signal being obtained by simulating an absolute position sensor and a relative position sensor, the first simulation signal including a signal simulating a signal to be transmitted to a host of the positioning and speed measurement system generated after the relative position sensor passes a long stator cogging, and a signal simulating a signal to be transmitted to a host of the positioning and speed measurement system generated after the absolute position sensor passes a signboard; the test cabinet transmitting the first simulation signal to a positioning and velocity measurement system host under test; The test cabinet acquires a first result calculated by the positioning and velocity measurement system host under test based on the first simulation signal; the test cabinet calculating a corresponding second result based on the first simulation signal, the second result being a reference result corresponding to the first simulation signal; and when a comparison result between the first result and the second result exceeds a first preset range, the test cabinet determines that the positioning and speed measurement system host being tested is abnormal.

2. The comparison result between the first result and the second result exceeding a preset range is a difference between the first result and the second result is equal to or greater than a first threshold; and / or a ratio of the first result to the second result being equal to or greater than a second threshold; 2. The method of claim 1, comprising:

3. The first simulation signal is The signals are obtained by simulating the QSPI that the relative position sensor and the positioning and speed measurement system host interact with, the cogging pulse square wave output from the relative position sensor, the diagnostic information output from the absolute position sensor, and the signboard information transmitted from the absolute position sensor.

2. The method of claim 1 .

4. A step in which the test cabinet obtains a second simulation signal, the second simulation signal being obtained by simulating another system, the other system including at least one of an on-board driving control system, an on-board wireless system, and an on-board control and diagnostic system; the test cabinet transmitting the second simulation signal to the positioning and velocity measurement system host under test; The test cabinet acquires a third result calculated by the positioning and speed measurement system host under test based on the second simulation signal; the test cabinet calculating a fourth result based on the second simulation signal, the fourth result being a reference result corresponding to the second simulation signal; When a comparison result between the third result and the fourth result exceeds a second preset range, the test cabinet determines that the positioning and speed measurement system host to be tested is abnormal; The method of claim 1 further comprising:

5. A test device for a positioning test system host, comprising: a first simulation signal acquiring unit for acquiring a first simulation signal generated by a test cabinet, the first simulation signal being acquired by simulating an absolute position sensor and a relative position sensor, the first simulation signal including a signal simulating a signal to be transmitted to a host of a positioning and speed measurement system generated after the relative position sensor passes a long stator cogging, and a signal simulating a signal to be transmitted to a host of a positioning and speed measurement system generated after the absolute position sensor passes a signboard; a first simulation signal sending unit for sending the first simulation signal to a positioning and speed measurement system host to be tested; a first result calculation unit for obtaining a first result calculated by the positioning and velocity measurement system host under test based on the first simulation signal; a second result calculation unit for obtaining a corresponding second result calculated by the test cabinet based on the first simulation signal, the second result being a reference result corresponding to the first simulation signal; a first judging unit for judging that the positioning and speed measurement system host being tested is abnormal when a comparison result between the first result and the second result exceeds a first preset range; An apparatus comprising:

6. The comparison result between the first result and the second result exceeding a preset range is a difference between the first result and the second result is equal to or greater than a first threshold; and / or a ratio of the first result to the second result being equal to or greater than a second threshold value; 6. The apparatus of claim 5, further comprising:

7. The first simulation signal is The signals are obtained by simulating the QSPI that the relative position sensor and the positioning and speed measurement system host interact with, the cogging pulse square wave output from the relative position sensor, the diagnostic information output from the absolute position sensor, and the signboard information transmitted from the absolute position sensor.

6. The apparatus according to claim 5 .

8. A second simulation signal acquisition unit that acquires a second simulation signal generated by the test cabinet, the second simulation signal being obtained by simulating another system, the other system including at least one of an on-board driving control system, an on-board wireless system, and an on-board control and diagnostic system; a second simulation signal sending unit for sending the second simulation signal to the positioning and speed measurement system host under test; a third result calculation unit for obtaining a third result calculated by the positioning and velocity measurement system host under test based on the second simulation signal; a fourth result calculation unit for obtaining a fourth result calculated by the test cabinet based on the second simulation signal, the fourth result being a reference result corresponding to the second simulation signal; a second judgment unit for judging that the positioning and speed measurement system host being tested is abnormal when a comparison result between the third result and the fourth result exceeds a second preset range; The apparatus of claim 5 further comprising:

Images