CN112748282A - OBU radio frequency detection device - Google Patents

Abstract

The invention discloses an OBU radio frequency detection device, which is used for testing and screening the delivery radio frequency of an OBU, and comprises the following components: the radio frequency receiving module, the testing module, the analyzing and screening module and the storage module are electrically connected in sequence; the radio frequency receiving module is used for acquiring a radio frequency signal of the OBU in the closest distance on a factory detection production line, and the radio frequency signal comprises the unique ID of the OBU; the test module is used for testing the frequency parameters in the radio frequency signals according to the radio frequency signals acquired by the radio frequency receiving module and sending the radio frequency information comprising the frequency parameters to the analysis screening module; the analysis screening module is used for screening whether the frequency parameter in the radio frequency information reaches the standard according to a preset frequency parameter standard threshold, simultaneously analyzing the unique ID of the OBU in the radio frequency information, and storing the screened radio frequency information and the unique ID in the storage module in an associated manner. The OBU delivery test efficiency is improved.

Description

OBU radio frequency detection device

Technical Field

The invention relates to the technical field of OBU detection, in particular to an OBU radio frequency detection device.

Background

Along with the popularization of ETC, radio frequency OBU labels also enter a comprehensive batch production stage, in the OBU batch production process, the radio frequency parameters of each OBU when leaving a factory are different due to the limitation of plate-level base materials, device errors and the like, and therefore the frequency point and frequency offset test is required to be carried out on each OBU leaving the factory. The common test method is to lead out a radio frequency line from the radio frequency end of the OBU, connect the radio frequency line to a frequency spectrum, and read out parameters such as frequency point, frequency offset and the like of the current OBU from the frequency spectrum. The method is only suitable for sampling inspection in batches, cannot completely cover all factory equipment, and is bound to have certain omission.

Disclosure of Invention

The invention aims to provide an OBU radio frequency detection device, which can improve the delivery test efficiency of the OBU.

In order to achieve the above object, the present invention provides an OBU radio frequency detection apparatus, which is used for testing and screening an OBU factory radio frequency, and includes: the radio frequency receiving module, the testing module, the analyzing and screening module and the storage module are electrically connected in sequence;

the radio frequency receiving module is used for acquiring a radio frequency signal of the OBU in the closest distance on a factory detection production line, and the radio frequency signal comprises a unique ID of the OBU;

the test module is used for testing the frequency parameters in the radio frequency signals according to the radio frequency signals acquired by the radio frequency receiving module and sending the radio frequency information comprising the frequency parameters to the analysis screening module;

the analysis screening module is used for screening whether the frequency parameter in the radio frequency information reaches the standard according to a preset frequency parameter standard threshold, analyzing the unique ID of the OBU in the radio frequency information, and storing the screened radio frequency information and the unique ID in the storage module in an associated manner.

Optionally, the storage module includes a factory test standard database and a factory test substandard database.

Optionally, the parsing screening module is further configured to: and storing the radio frequency information judged to reach the standard to a delivery test database which reaches the standard, and storing the radio frequency information judged to not reach the standard to the delivery test database which does not reach the standard.

Optionally, the analysis screening system further comprises a display module electrically connected with the analysis screening module.

Optionally, the parsing screening module is further configured to: and displaying whether the screening result of the frequency parameter corresponding to the OBU reaches the standard or not through the display module.

Optionally, the frequency parameters include a frequency point parameter and a frequency offset parameter.

Optionally, the parsing screening module is further configured to: and after all the OBUs are tested, drawing a frequency deviation curve summary chart of the OBUs tested in the batch based on the stored radio frequency information of all the OBUs, and giving the qualification rate of the OBUs tested in the batch.

Optionally, the radio frequency receiving module includes a radio frequency receiving antenna.

Optionally, the test module comprises a spectrum tester and/or an oscilloscope.

Optionally, the screening module includes a processing unit and an RFID reader.

The invention has the beneficial effects that:

the radio frequency receiving module is used for acquiring the radio frequency signal of the OBU which is the closest distance on a factory detection production line, the test module is used for testing the frequency parameter in the radio frequency signal, the radio frequency information comprising the frequency parameter is sent to the analysis screening module, the analysis screening module screens whether the frequency parameter in the radio frequency information reaches the standard according to the preset frequency parameter standard threshold value, the unique ID of the OBU in the radio frequency information is analyzed, the screened radio frequency information and the unique ID are stored to the storage module in an associated mode, the OBU radio frequency signal can be acquired in the air, the OBU and the OBU are accurately positioned according to the signal strength and the analyzed ID in the radio frequency signal, a test line does not need to be welded, and the test efficiency is greatly improved.

Furthermore, the acquisition, analysis and screening of signals, the final drawing and the result presentation are automatically finished without manual recording and calculation. The reading error, the manual recording, the error rate calculation and the like can be effectively reduced, the factory test efficiency can be greatly improved, the factory test of the OBU can be comprehensively covered, the test efficiency is improved, and the product quality of the factory test is effectively ensured while the factory test is improved.

The apparatus of the present invention has other features and advantages which will be apparent from or are set forth in detail in the accompanying drawings and the following detailed description, which are incorporated herein, and which together serve to explain certain principles of the invention.

Drawings

The above and other objects, features and advantages of the present invention will become more apparent by describing in more detail exemplary embodiments thereof with reference to the attached drawings, in which like reference numerals generally represent like parts.

Fig. 1 shows a schematic structural diagram of an OBU radio frequency detection device according to an embodiment of the present invention.

Description of reference numerals:

the system comprises a radio frequency receiving module, a 2-testing module, a 3-analysis screening module, a 4-storage module and a 5-display module.

Detailed Description

The invention will be described in more detail below with reference to the accompanying drawings. While the preferred embodiments of the present invention are shown in the drawings, it should be understood that the present invention may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.

Fig. 1 shows a schematic structural diagram of an OBU radio frequency detection device according to an embodiment of the present invention.

As shown in fig. 1, an OBU radio frequency detection apparatus for testing and screening an OBU factory radio frequency includes: the radio frequency receiving module 1, the testing module 2, the analysis screening module 3 and the storage module 4 are electrically connected in sequence;

the radio frequency receiving module 1 is used for acquiring a radio frequency signal of an OBU (on board unit) in the closest distance on a factory detection production line, wherein the radio frequency signal comprises a unique ID (identity) of the OBU;

the test module 2 is used for testing the frequency parameters in the radio frequency signals according to the radio frequency signals acquired by the radio frequency receiving module 1 and sending the radio frequency information including the frequency parameters to the analysis screening module 3;

the analysis screening module 3 is used for screening whether the frequency parameter in the radio frequency information reaches the standard according to a preset frequency parameter standard threshold, analyzing the unique ID of the OBU in the radio frequency information, and storing the screened radio frequency information and the unique ID in the storage module 4 in an associated manner.

Specifically, the radio frequency receiving module 1 may acquire an air radio frequency signal of the OBU, and may preferentially acquire a signal of an individual OBU with the highest signal strength. Preferably, the radio frequency receiving module 1 may be a radio frequency receiving antenna or a receiving antenna of a test instrument, etc.

The test module 2 tests parameters such as frequency points, frequency offsets and the like according to the signals acquired by the radio frequency receiving module 1, and automatically transmits the parameter information to the screening module. Preferably, the test module 2 may be a spectrum tester, an oscilloscope, or the like.

The analysis screening module 3 automatically analyzes the data information transmitted by the testing module 2, and judges the validity of the current information according to a preset standard threshold, namely the current information reaches or does not reach the standard. Preferably, the screening module includes a processing unit, which may be selected from a PLC, MCU, etc. processor, and an RFID reader, which is primarily used for the unique ID of the OBU in the exclusive video signal.

The storage module 4 comprises a delivery standard test database and a delivery substandard test database. The resolution screening module 3 is further configured to: and storing the radio frequency information judged to reach the standard into a standard delivery test database, and storing the radio frequency information judged to not reach the standard into a non-standard delivery test database.

The device also comprises a display module 5, and the display module 5 is electrically connected with the analysis screening module 3. The resolution screening module 3 is further configured to: and displaying whether the screening result of the frequency parameter corresponding to the OBU reaches the standard or not through the display module 5. Preferably, the display module 5 is a liquid crystal display.

Specifically, the analysis screening module 3 automatically analyzes the data information transmitted by the test module 2, judges the validity of the current information according to a preset standard threshold, automatically puts the legal information into a legal factory test database for the legal information, and automatically puts the illegal information into an unqualified database for the illegal information, and can simultaneously inform the relevant automatic equipment of the production line to automatically screen out the unqualified OBUs and remind whether the current equipment is qualified.

In this embodiment, the frequency parameters include frequency point parameters and frequency offset parameters. The resolution screening module 3 is further configured to: and after all the OBUs are tested, drawing a frequency deviation curve summary chart of the OBUs tested in the batch based on the stored radio frequency information of all the OBUs, and giving the qualification rate of the OBUs tested in the batch.

Specifically, after all OBU tests are completed, the analysis screening module 3 can automatically draw a frequency deviation line summary map of the product under test this time, and give a qualification rate of the product under test. Meanwhile, the unique ID of the current OBU can be analyzed, and the current OBU and the OBU to be tested are accurately positioned. The data information can also be stored in a corresponding database according to a standard format for archiving and consulting. For analyzing the functions of the screening module 3, those skilled in the art can develop and design related programs according to the specific functions thereof, and the implementation is easy, and will not be described herein again.

In conclusion, the OBU radio frequency detection device can directly read the air signal of the close OBU, the trouble that a test line needs to be welded in the existing detection method is omitted, and the test efficiency is improved. The analysis of the test data and the analysis of the test result are automatically completed, so that the test method is quicker and the result is more accurate. With the test method, the factory test of the OBU can be completed, not only the spot check, but also the product quality of the factory test is effectively ensured while the test efficiency is improved.

Having described embodiments of the present invention, the foregoing description is intended to be exemplary, not exhaustive, and not limited to the embodiments disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments.

Claims (10)

1. An OBU radio frequency detection device for OBU factory radio frequency's test screening, its characterized in that includes: the radio frequency receiving module, the testing module, the analyzing and screening module and the storage module are electrically connected in sequence;

the radio frequency receiving module is used for acquiring a radio frequency signal of the OBU in the closest distance on a factory detection production line, and the radio frequency signal comprises a unique ID of the OBU;

the test module is used for testing the frequency parameters in the radio frequency signals according to the radio frequency signals acquired by the radio frequency receiving module and sending the radio frequency information comprising the frequency parameters to the analysis screening module;

the analysis screening module is used for screening whether the frequency parameter in the radio frequency information reaches the standard according to a preset frequency parameter standard threshold, analyzing the unique ID of the OBU in the radio frequency information, and storing the screened radio frequency information and the unique ID in the storage module in an associated manner.

2. The OBU radio frequency detection device of claim 1, wherein the storage module comprises a factory-compliant test database and a factory-non-compliant test database.

3. The OBU radio frequency detection device of claim 2, wherein the analytic screening module is further to: and storing the radio frequency information judged to reach the standard to a delivery test database which reaches the standard, and storing the radio frequency information judged to not reach the standard to the delivery test database which does not reach the standard.

4. The OBU radio frequency detection device of claim 1, further comprising a display module electrically connected to the analytic screening module.

5. The OBU radio frequency detection device of claim 4, wherein the analytic screening module is further to: and displaying whether the screening result of the frequency parameter corresponding to the OBU reaches the standard or not through the display module.

6. The OBU radio frequency detection device of claim 1, wherein the frequency parameters comprise frequency bin parameters and frequency offset parameters.

7. The OBU radio frequency detection device of claim 6, wherein the analytic screening module is further to: and after all the OBUs are tested, drawing a frequency deviation curve summary chart of the OBUs tested in the batch based on the stored radio frequency information of all the OBUs, and giving the qualification rate of the OBUs tested in the batch.

8. The OBU radio frequency detection device of claim 1, wherein the radio frequency receive module comprises a radio frequency receive antenna.

9. The OBU radio frequency detection device of claim 1, wherein the test module comprises a spectrum tester and/or an oscilloscope.

10. The OBU radio frequency detection device of claim 1, wherein the screening module includes a processing unit and an RFID reader.

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