CN212936065U - Vehicle-mounted camera aging test unit and test system - Google Patents
Vehicle-mounted camera aging test unit and test system Download PDFInfo
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- CN212936065U CN212936065U CN202022187198.2U CN202022187198U CN212936065U CN 212936065 U CN212936065 U CN 212936065U CN 202022187198 U CN202022187198 U CN 202022187198U CN 212936065 U CN212936065 U CN 212936065U
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- 238000012360 testing method Methods 0.000 title claims abstract description 119
- 230000032683 aging Effects 0.000 title claims abstract description 40
- 238000005259 measurement Methods 0.000 claims abstract description 32
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- 239000003990 capacitor Substances 0.000 claims abstract description 15
- 238000012544 monitoring process Methods 0.000 claims abstract description 11
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Abstract
The utility model relates to an on-vehicle camera aging testing unit and test system, the test unit includes the aging testing circuit board, and its technical essential is: the aging test circuit board is provided with a parameter measurement module and a test processor, the parameter measurement module adopts a power switch and a current measurement chip, the output ends of the power switch and the current measurement chip are connected with the input end of the filter, a connector connected with a camera to be tested is connected with the output end of the filter, the power switch and the current measurement chip are further connected with the input end of the analog-to-digital converter, the output end of the analog-to-digital converter is connected with the test processor, the output end of the connector is further connected with a blocking capacitor, the other end of the blocking capacitor is connected with the deserializing chip, and the output end of the deserializing chip is connected with the test processor. The system realizes real-time dynamic monitoring and recording of circuit parameters and functions of the vehicle-mounted camera in the aging test project process, so that a more complete aging test effect is realized, and the test effectiveness is obviously improved.
Description
Technical Field
The utility model relates to an electrical test technical field, concretely relates to vehicle-mounted camera aging testing unit and test system.
Background
With the development of information technology and artificial intelligence, cameras are more and more widely applied to safe driving and automatic driving of automobiles, and more cameras are used on automobile bodies. Due to the particularity of automobiles, the requirements on reliability and stability of the vehicle-mounted camera are very high, and the vehicle-mounted camera can be delivered only after being subjected to strict test and verification. Various burn-in test projects simulating harsh operating environments are also necessary.
At present, an aging test mode mainly enables a vehicle-mounted camera to work for a long time under a test condition, so that the stability of functions such as whether output images are normal or not is observed artificially. Because the testing time of general ageing is very long, in order to guarantee test efficiency, need test comparatively many on-vehicle camera simultaneously, lead to that the stability of observation function is difficult to be gone on in succession like this. Therefore, there is a problem that the change of the working performance of the camera caused by the change of the aging parameter during the aging test cannot be monitored completely, for example, the current suddenly increases under the normal condition of the image output, and the image function is temporarily disabled or abnormal. Potential defects which are not easy to observe in the test of the situations can gradually appear in the use environment after the vehicle leaves a factory, so that the vehicle-mounted camera works abnormally, and some use risks are caused.
Disclosure of Invention
The utility model aims at providing an use reliable vehicle-mounted camera aging testing unit and test system, realize circuit parameter and the real-time dynamic monitoring and the record of function to vehicle-mounted camera in aging testing project process to realize more perfect aging testing effect, show improvement test validity.
The technical scheme of the utility model is that:
the utility model provides an on-vehicle camera aging testing unit, includes the aging testing circuit board, its technical essential is: the aging test circuit board is provided with a parameter measurement module for monitoring a camera working circuit and a test processor for monitoring an image output by the camera, the parameter measurement module adopts a power switch and a current measurement chip, the input end of the power switch and the current measurement chip is connected with a power supply, the output end of the power switch and the input end of the current measurement chip are connected with the input end of a filter, the input end of a connector connected with an interface of the camera to be tested is connected with the output end of the filter, the power switch and the current measurement chip are additionally connected with the input end of an analog/digital converter, the output end of the analog/digital converter is connected with the test processor, the output end of the connector is additionally connected with a blocking capacitor, the other end of the blocking capacitor is connected with a deserializing chip, and the output end of the.
In the aging test unit for the vehicle-mounted camera, in the same test unit, the number of the deserializing chips is two, each deserializing chip is connected with four blocking capacitors and four connectors through the four blocking capacitors, each power switch and current measurement chip are connected with two filters and two connectors through the two filters, and each analog/digital converter is connected with two power switches and current measurement chips.
In the above vehicle-mounted camera aging test unit, the model of the test processor is MIMX8QM6 AVUFFAB. The method can realize the rapid processing of 8 paths of images and adapt to the requirement of high-resolution camera test.
In the aging test unit for the vehicle-mounted camera, the model of the power switch and the current measurement chip is TPS2H000BQPWPRQ 1. The camera has the function of timely powering off the corresponding camera when abnormal working current is found, the whole camera is prevented from being burnt, and the maintenance cost is reduced.
The utility model provides an adopt above-mentioned on-vehicle camera aging testing unit's test system which the technical essential is: the test system is provided with a plurality of test units, and the test processor of each test unit is connected with the test host to receive and record monitoring information transmitted by the test processor.
The utility model has the advantages that:
1. the camera working circuit is dynamically monitored in real time through the parameter measuring module, so that transient change of aging characteristics of devices in the camera and circuit instability under the condition that an image output function is not changed are monitored, and the transient change and the circuit instability are recorded through the host.
2. By dynamically receiving and monitoring the image output of the camera in real time through the test processor, the conditions of short-time image abnormity, frame loss, reset and the like can be found and recorded through the host.
3. The circuit protection function under the abnormal condition of the camera is realized through the power switch and the current measurement chip, and the camera is prevented from being burnt.
Drawings
FIG. 1 is a logic diagram of a test system according to the present invention;
fig. 2 is a schematic circuit diagram of the test unit of the present invention.
In the figure: 1. the device comprises an aging test box, 2, a test chart board, 3, a vehicle-mounted camera, 4, an aging test circuit board, 5, a parameter measurement module, 6, a test processor, 7, a test host, 8, a connector, 9, a filter, 10, a power switch and current measurement chip, 11, an analog/digital converter, 12, a blocking capacitor and 13, a deserializing chip.
Detailed Description
As shown in fig. 1 and 2, the aging test system for the vehicle-mounted camera includes a test host 7 and a plurality of test units connected to the test host 7.
The testing unit comprises an aging testing circuit board 4, wherein a parameter measuring module 5 for monitoring a camera working circuit and a testing processor 6 for monitoring an image output by a camera are arranged on the aging testing circuit board 4. The parameter measurement module 5 adopts a power switch and current measurement chip 10, the input end of the power switch and current measurement chip 10 is connected with the POC power supply, the output end is connected with the input end of the filter 9, the input end of the connector 8 connected with the interface of the camera to be tested is connected with the output end of the filter 9, the power switch and current measurement chip 10 is further connected with the input end of the analog/digital converter 11, and the output end of the analog/digital converter 11 is connected with the test processor 6. The output end of the connector 8 is further connected with a blocking capacitor 12, the other end of the blocking capacitor 12 is connected with a deserializing chip 13, and the output end of the deserializing chip 13 is connected with the test processor 6.
The parameter measuring module 5 collects current and voltage signals of a camera working circuit in real time through the power switch and the current measuring chip 10, and transmits a measuring result to the testing processor 6. When the working current of a certain camera exceeds a limit value, the working power supply of the camera is cut off to realize a protection function; meanwhile, the test processor 6 reads the instant abnormal current through the analog/digital converter 11 and transmits the current to the test host 7 for recording, thereby realizing the purpose of simultaneously monitoring the abnormal conditions of the working circuits of the cameras in real time. The deserializing chip 13 converts the parallel-serial image signals transmitted by the connector into parallel signals and transmits the parallel signals to the test processor 6, the test processor 6 dynamically receives and monitors the image output of each camera in real time, and analyzes the content and stability of the image output by the camera in real time, so that the conditions of short-time image abnormity, frame loss, reset and the like can be found. After the test is finished, the staff can know the test result of each camera through the record of the test host 7.
In this embodiment, in the same test unit, the number of the deserializing chips 13 is two, and each deserializing chip 13 is connected with four blocking capacitors 12 and four connectors 8 through the four blocking capacitors, that is, four cameras are connected and tested. Each power switch and current measurement chip 10 is connected to two filters 9 and to two connectors 8 through the two filters, i.e. to test two cameras. Each analog/digital converter 11 is connected to two power switches and to the current measuring chip 10. Each testing unit is connected with and tests eight cameras in total, a testing processor 6 of each testing unit is connected with a testing host 7, and each testing processor 6 receives output images of eight paths of vehicle-mounted cameras to be tested simultaneously.
To achieve the corresponding processing capacity, the model of the test processor 6 selects MIMX8QM6AVUFFAB of NXP. The system is provided with a 4-core Cortex A53 CPU with 1.2G main frequency, a 2-core Cortex A72 with 1.6G main frequency and an internal GPU and a VPU, can complete eight-path image processing function, and analyzes whether a real-time frame rate of image output is stable or not and whether an image is normal or not. The real-time current state and the real-time circuit state given by the parameter measuring module are combined, the transient state abnormal phenomenon of the tested vehicle-mounted camera in the long-time aging test process can be found, and therefore the product quality output by the aging test is guaranteed.
The model of the power switch and current measurement chip 10 is TPS2H000BQPWPRQ 1. TPS2H000BQPWPRQ1 is a 2-way load switch of TI, has diagnosis and protection functions of load open circuit, short circuit, overcurrent, overheat and the like, and has a load current detection function. The analog/digital converter 11 uses the ADS1015BQDGSRQ1 chip. The TPS2H000BQPWPRQ1 and ADS1015BQDGSRQ1 can be combined to complete the current measurement and AD conversion functions, can measure the working current in real time and transmit the working current to the test processor for judgment.
When the aging test device is used, the test chart board 2 and each vehicle-mounted camera 3 to be tested are placed in the aging test box 1, and the test chart board 2 is placed on the side of each vehicle-mounted camera 3 to be tested and serves as an output image reference source. Each connector 8 of each test unit is connected with the interface of the corresponding vehicle-mounted camera 3, and the test processor 6 of each test unit is connected with the test host 7 through a network cable or other cables. A plurality of test unit simultaneous working can realize that camera in batches carries out aging testing simultaneously. The test host 7 displays and records the test result, and the tracing of the test result of the camera is realized.
The embodiments of the present invention have been described in detail, but the description is only for the preferred embodiments of the present invention and should not be construed as limiting the scope of the present invention. All equivalent changes and modifications made within the scope of the present invention should be covered by the present patent.
Claims (5)
1. The utility model provides an on-vehicle camera aging testing unit, includes aging testing circuit board, its characterized in that: the aging test circuit board is provided with a parameter measurement module for monitoring a camera working circuit and a test processor for monitoring an image output by the camera, the parameter measurement module adopts a power switch and a current measurement chip, the input end of the power switch and the current measurement chip is connected with a power supply, the output end of the power switch and the input end of the current measurement chip are connected with the input end of a filter, the input end of a connector connected with an interface of the camera to be tested is connected with the output end of the filter, the power switch and the current measurement chip are additionally connected with the input end of an analog/digital converter, the output end of the analog/digital converter is connected with the test processor, the output end of the connector is additionally connected with a blocking capacitor, the other end of the blocking capacitor is connected with a deserializing chip, and the output end of the.
2. The vehicle-mounted camera aging test unit according to claim 1, wherein: in the same test unit, the number of the deserializing chips is two, each deserializing chip is connected with four blocking capacitors and four connectors through the four blocking capacitors, each power switch and current measurement chip are connected with two filters and two connectors through the two filters, and each analog/digital converter is connected with two power switches and current measurement chips.
3. The vehicle-mounted camera aging test unit according to claim 1, wherein: the model of the test processor is MIMX8QM6 AVUFFAB.
4. The vehicle-mounted camera aging test unit according to claim 1, wherein: the model of the power switch and the current measuring chip is TPS2H000BQPWPRQ 1.
5. A test system using the in-vehicle camera aging test unit according to claim 1, 2, 3, or 4, characterized in that: the test system is provided with a plurality of test units, and the test processor of each test unit is connected with the test host.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022187198.2U CN212936065U (en) | 2020-09-29 | 2020-09-29 | Vehicle-mounted camera aging test unit and test system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022187198.2U CN212936065U (en) | 2020-09-29 | 2020-09-29 | Vehicle-mounted camera aging test unit and test system |
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| CN212936065U true CN212936065U (en) | 2021-04-09 |
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| CN202022187198.2U Active CN212936065U (en) | 2020-09-29 | 2020-09-29 | Vehicle-mounted camera aging test unit and test system |
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| GR01 | Patent grant | ||
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| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Vehicle mounted camera aging test unit and test system Effective date of registration: 20220706 Granted publication date: 20210409 Pledgee: Panjin science and technology Financing Guarantee Co.,Ltd. Pledgor: Liaoning Lijing Technology Co.,Ltd. Registration number: Y2022210000088 |
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Date of cancellation: 20231127 Granted publication date: 20210409 Pledgee: Panjin science and technology Financing Guarantee Co.,Ltd. Pledgor: Liaoning Lijing Technology Co.,Ltd. Registration number: Y2022210000088 |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Car mounted camera aging testing unit and testing system Effective date of registration: 20231211 Granted publication date: 20210409 Pledgee: Panjin science and technology Financing Guarantee Co.,Ltd. Pledgor: Liaoning Lijing Technology Co.,Ltd. Registration number: Y2023980070852 |
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| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Granted publication date: 20210409 Pledgee: Panjin science and technology Financing Guarantee Co.,Ltd. Pledgor: Liaoning Lijing Technology Co.,Ltd. Registration number: Y2023980070852 |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Car mounted camera aging testing unit and testing system Granted publication date: 20210409 Pledgee: Panjin science and technology Financing Guarantee Co.,Ltd. Pledgor: Liaoning Lijing Technology Co.,Ltd. Registration number: Y2024210000048 |