CN210833626U - Automobile instrument environmental test load box - Google Patents
Automobile instrument environmental test load box Download PDFInfo
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- CN210833626U CN210833626U CN201922021920.2U CN201922021920U CN210833626U CN 210833626 U CN210833626 U CN 210833626U CN 201922021920 U CN201922021920 U CN 201922021920U CN 210833626 U CN210833626 U CN 210833626U
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Abstract
The utility model relates to an motormeter environmental test load box has solved the problem that electrical test, weather environmental test need two kinds of load boxes in the past to adopt test signal generation module and nimble adjustable interface module able to programme, make the load box can compatible polytypic motormeter test function through small adjustment, motormeter environmental test load box includes: the device comprises a case, a display module, a front panel key module, a rear panel switch module, a power supply module, a test signal generation module and an interface module. The utility model discloses a test module collocation peripheral circuit's able to programme mode to lower cost realizes motormeter's functional test. The utility model discloses a load box can be used in motormeter's electrical property test and environmental test. Compared with the prior art, the method has the advantages of low cost and wide application range.
Description
Technical Field
The utility model belongs to automobile parts tests the field, especially relates to an motormeter environmental test load box.
Background
Before the automobile instrument is put into production, strict environmental test verification is required. Most test items need to be connected with a test load box so that the automobile instrument can operate under a specified working condition, and whether the functional state of the automobile instrument can meet the design requirement is checked. The existing mode adopts two kinds of test load boxes of electrical environment test and climate environment test, and the test load box can only be used for testing one type of automobile instrument, and the equipment utilization rate is low.
Disclosure of Invention
The utility model aims at providing an motormeter environmental test load box to solve the problem that electrical test, weather environmental test need two kinds of load boxes in the past, and adopt programmable test signal generation module and nimble adjustable interface module, make the load box can compatible polytypic motormeter test function through small adjustment.
The utility model aims at realizing through the following technical scheme:
a test load box for an automobile instrument environmental test is characterized by comprising a case 1, a display module 2, a front panel key module 3, a rear panel switch module 4, a power module 5, a test signal generation module 6 and an interface module 7;
the display module 2, the front panel key module 3, the rear panel switch module 4 and the interface module 7 are arranged on the case 1;
the power module 5 and the test signal generation module 6 are installed in the case 1;
the front panel key module 3 comprises four keys of 'adding', 'subtracting', 'determining', 'starting/stopping' and is used for generating operation signals of test parameter adjustment, test program single-step operation and test program starting and stopping;
the display module 2 comprises a control circuit and a display module, is connected with the front panel key module 3, and is used for acquiring a front panel key operation signal, displaying a test parameter and adjusting an output voltage;
the rear panel switch module 4 comprises a main switch 4.1 and an automobile instrument power supply selection switch 4.2, and is used for turning on/off a load box and selecting an automobile instrument power supply mode;
the interface module 7 comprises an alternating current power supply interface, a direct current power supply interface and six automobile instrument interfaces and is used for connecting an alternating current power supply 9, a direct current power supply 10 and a tested automobile instrument 8 sample piece;
the power module 5 comprises an AC/DC module and a DC/DC module and is used for supplying power to the display module 2, the front panel key module 3 and the test signal generation module 6;
the test signal generation module 6 comprises six same test units, is connected with the front panel key module 3 and the interface module 7, and is used for collecting front panel key operation signals and outputting multi-channel high and low level signals, CAN signals, PWM signals, voltage signals and resistance signals.
Further, the test parameters comprise a test mode, a test step, a test voltage and a test time; the test modes comprise a single-step test mode, a cycle test mode and a typical working condition test mode; the testing step shows the number of steps running in the single step testing mode, and the number of steps running in the other modes is zero; the test voltage can be set to be 9V-32V; the test time can be set within the range of 1 min-999 h59 min.
Further, the automobile instrument interface comprises a 50-core aviation socket, a 50-path wire harness and a matched terminal; the 50 paths of terminals can manually adjust the connection sequence of the test signal generation module and the test unit according to the model of the automobile instrument; the automobile instrument sample to be tested is connected with the 50-core aviation socket of the load box through a 50-core aviation plug through a wiring harness.
Further, the power supply modes of the automobile instrument comprise alternating current power supply and direct current power supply; the alternating current power supply means that alternating current power supply input by a load box provides voltage set by test parameters for the automobile instrument 8 after passing through an AC/DC module and a DC/DC module; the direct current power supply means that external direct current power supply equipment supplies voltage to the automobile instrument 8.
Further, the alternating current power supply 9 refers to 220V commercial power; the dc power supply 10 refers to a power supply device that can generate a complex voltage waveform during an electrical environment test.
Further, the AC/DC module can convert 220V commercial power into direct current 36V; the DC/DC module is adjusted by the display module control circuit, and the output voltage range is 9V-32V.
Furthermore, the test unit includes programmable singlechip, 40 way high-low level signal circuit and binding post, 2 way CAN signal circuit and binding post, 2 way PWM signal circuit and binding post, 2 way voltage signal circuit and binding post, 2 way resistance signal circuit and binding post.
Compared with the prior art, the beneficial effects of the utility model reside in that: in the automobile instrument load box in the prior art, signals are sent and received for the automobile instrument in a mode of combining the upper computer, the CANoe and the test board card, so that the function state monitoring of the automobile instrument in various tests is realized, the integral structure of the load box is complex, and the cost is high due to the application of the upper computer and the CANoe. Moreover, the application scene is single, and most of the application scenes are applied in an EMC test environment or a basic function test environment. The utility model discloses a test module collocation peripheral circuit's able to programme mode to lower cost realizes motormeter's functional test. The utility model discloses a load box can be used in motormeter's electrical property test and environmental test. Compared with the prior art, the method has the advantages of low cost and wide application range.
Drawings
Fig. 1 is the utility model discloses motormeter environmental test tests load box's schematic structure.
In the figure, 1, a case 2, a display module 3, a front panel key module 4, a rear panel switch module 5, a power supply module 6, a test signal generation module 7, an interface module 8, an automobile instrument 9, an alternating current power supply 10, a direct current power supply 4.1, a main switch 4.2 and an automobile instrument power supply selection switch are arranged.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.
Fig. 1 discloses a structure diagram of a load box for testing environment test of an automobile instrument according to an embodiment of the present invention. As shown in fig. 1, the test system is composed of a chassis 1, a display module 2, a front panel key module 3, a rear panel switch module 4, a power module 5, a test signal generation module 6 and an interface module 7. The case 1 is a 4U case which is convenient to install and carry.
The display module 2, the front panel key module 3, the rear panel switch module 4 and the interface module 7 are arranged on the case 1; the power module 5 and the test signal generation module 6 are installed in the case 1; the front panel key module 3 comprises four keys of adding, subtracting, determining and starting/stopping, and is used for generating operation signals of test parameter adjustment, test program single-step operation and test program starting and stopping;
the display module 2 comprises a control circuit and a display module, is connected with the front panel key module 3, and is used for acquiring a front panel key operation signal, displaying a test parameter and adjusting an output voltage; the rear panel switch module 4 comprises a main switch 4.1 and an automobile instrument power supply selection switch 4.2, and is used for turning on/off a load box and selecting an automobile instrument 8 power supply mode; the interface module 7 comprises an alternating current power supply interface, a direct current power supply interface and six automobile instrument interfaces and is used for connecting an alternating current power supply 9, a direct current power supply 10 and a tested automobile instrument 8 sample piece;
the power supply module 5 comprises an AC/DC module and a DC/DC module and is used for supplying power to the display module 2, the front panel key module 3 and the test signal generation module 6; the test signal generation module 6 comprises six same test units, is connected with the front panel key module 3 and the interface module 7, and is used for collecting front panel key operation signals and outputting multi-channel high and low level signals, CAN signals, PWM signals, voltage signals and resistance signals.
The specific use method is as follows:
when a low-temperature running test of a climate environment test is carried out, inserting the aviation plug of each 50 core wire bundle assembly into the corresponding socket, and connecting the other end of the aviation plug with a sample piece of the tested automobile instrument 5; the 220V mains supply is connected to an alternating current power supply interface, an automobile instrument power supply selection switch selects an alternating current power supply to supply power, a main switch 4.1 is turned on, an AC/DC module in a power module 5 works to supply power to a corresponding module, and a load box starts to work; the test is started after a cycle test mode or a typical working condition test mode is set through the front panel key module 3, the test voltage is 27V, and the test time is 24 h; the power supply module 5 adjusts the output voltage of the DC/DC module according to the set test voltage and outputs the voltage to the automobile instrument 8; the test signal generation module 6 periodically changes high and low level signals, CAN signals, PWM signals, voltage signals and resistance signals according to a set test mode and test time;
when an electrical environment test is carried out, inserting one aviation plug of the 50-core wire bundle assembly into a corresponding socket, and connecting the other end of the aviation plug with a tested automobile instrument 8 sample; an external direct current power supply device is connected to a direct current power supply interface, a power supply selection switch of an automobile instrument selects a direct current power supply to supply power, a main switch 4.1 is turned on, an AC/DC module in a power supply module works to supply power to a corresponding module, and a load box starts to work; the single step test mode, the test voltage default value and the test time arbitrary value are set through the front panel key module 3, and then the test is started; the external direct current power supply equipment outputs the voltage to the automobile instrument 8; the test signal generation module 6 changes high and low level signals, CAN signals, PWM signals, voltage signals and resistance signals according to the set test time and the operation of a 'confirm' key of an operator.
When the model of the tested automobile instrument changes, an operator simply programs the single chip microcomputer of the signal generation module test unit, adjusts the number and the sending content of CAN signal channels, the number and the frequency range of PWM signal channels, the number and the voltage range of voltage signal channels, the number and the resistance range of resistance signal channels and the number and the range of high and low level signal channels according to the design requirements of a new automobile instrument, and adjusts the corresponding line sequence of the 50-core circuit of the interface module according to the specific change of pin definition, so that each pin of the tested automobile instrument corresponds to each pin of high and low level signals.
The utility model aims at providing an motormeter environmental test load box to solve the problem that electrical test, weather environmental test need two kinds of load boxes in the past, and adopt programmable test signal generation module and nimble adjustable interface module, make the load box can compatible polytypic motormeter test function through small adjustment.
The above-described embodiments are provided to enable persons skilled in the art to make or use the invention, and many modifications and variations may be made to the above-described embodiments by persons skilled in the art without departing from the inventive concept of the present invention, so that the scope of the invention is not limited by the above-described embodiments, but should be accorded the widest scope consistent with the innovative features set forth in the claims.
Claims (7)
1. A load box for testing an automobile instrument environment test is characterized by comprising a case (1), a display module (2), a front panel key module (3), a rear panel switch module (4), a power supply module (5), a test signal generation module (6) and an interface module (7);
the display module (2), the front panel key module (3), the rear panel switch module (4) and the interface module (7) are arranged on the case (1);
the power supply module (5) and the test signal generation module (6) are arranged in the case (1);
the front panel key module (3) comprises four keys of adding, subtracting, determining and starting/stopping, and is used for generating operation signals of test parameter adjustment, test program single-step operation and test program starting and stopping;
the display module (2) comprises a control circuit and a display module, is connected with the front panel key module (3), and is used for acquiring a front panel key operation signal, displaying a test parameter and adjusting an output voltage;
the rear panel switch module (4) comprises a main switch (4.1) and an automobile instrument power supply selection switch (4.2) and is used for turning on/off the load box and selecting an automobile instrument power supply mode;
the interface module (7) comprises an alternating current power supply interface, a direct current power supply interface and six automobile instrument interfaces and is used for connecting an alternating current power supply (9), a direct current power supply (10) and a tested automobile instrument (8) sample;
the power supply module (5) comprises an AC/DC module and a DC/DC module and is used for supplying power to the display module (2), the front panel key module (3) and the test signal generation module (6);
the test signal generation module (6) comprises six same test units, is connected with the front panel key module (3) and the interface module (7) and is used for collecting front panel key operation signals and outputting multi-channel high-low level signals, CAN signals, PWM signals, voltage signals and resistance signals.
2. The automobile instrument environment test load box of claim 1, characterized in that: the test parameters comprise a test mode, a test step, a test voltage and a test time; the test modes comprise a single-step test mode, a cycle test mode and a typical working condition test mode; the testing step shows the number of steps running in the single step testing mode, and the number of steps running in the other modes is zero; the test voltage can be set to be 9V-32V; the test time can be set within the range of 1 min-999 h59 min.
3. The automobile instrument environment test load box of claim 1, characterized in that: the automobile instrument interface comprises a 50-core aviation socket, 50 paths of wiring harnesses and matched terminals; the 50 paths of terminals can manually adjust the connection sequence of the test signal generation module and the test unit according to the model of the automobile instrument; the automobile instrument sample to be tested is connected with the 50-core aviation socket of the load box through a 50-core aviation plug through a wiring harness.
4. The automobile instrument environment test load box of claim 1, characterized in that: the power supply mode of the automobile instrument comprises alternating current power supply and direct current power supply; the alternating current power supply means that alternating current power input by a load box provides voltage set by test parameters for the automobile instrument after passing through an AC/DC module and a DC/DC module; the direct current power supply means that external power supply equipment provides voltage for the automobile instrument.
5. The automobile instrument environment test load box of claim 1, characterized in that: the alternating current power supply refers to 220V commercial power; the direct current power supply refers to power supply equipment capable of generating complex voltage waveforms during electrical environment tests.
6. The automobile instrument environment test load box of claim 1, characterized in that: the AC/DC module can convert 220V commercial power into direct current 36V; the DC/DC module is adjusted by the display module control circuit, and the output voltage range is 9V-32V.
7. The vehicle instrument environment test load box of claim 1, wherein the test unit comprises a programmable single chip microcomputer, 40 high and low level signal circuits and terminals, 2 CAN signal circuits and terminals, 2 PWM signal circuits and terminals, 2 voltage signal circuits and terminals, and 2 resistance signal circuits and terminals.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922021920.2U CN210833626U (en) | 2019-11-21 | 2019-11-21 | Automobile instrument environmental test load box |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922021920.2U CN210833626U (en) | 2019-11-21 | 2019-11-21 | Automobile instrument environmental test load box |
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| CN210833626U true CN210833626U (en) | 2020-06-23 |
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| CN201922021920.2U Active CN210833626U (en) | 2019-11-21 | 2019-11-21 | Automobile instrument environmental test load box |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113376464A (en) * | 2021-06-15 | 2021-09-10 | 惠州市德赛西威汽车电子股份有限公司 | Control product test box circuit in car based on it is general |
-
2019
- 2019-11-21 CN CN201922021920.2U patent/CN210833626U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113376464A (en) * | 2021-06-15 | 2021-09-10 | 惠州市德赛西威汽车电子股份有限公司 | Control product test box circuit in car based on it is general |
| CN113376464B (en) * | 2021-06-15 | 2024-02-02 | 惠州市德赛西威汽车电子股份有限公司 | Universal automobile central control product test box circuit |
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