CN205374005U - Analogue means of on -vehicle light modulator - Google Patents
Analogue means of on -vehicle light modulator Download PDFInfo
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- CN205374005U CN205374005U CN201620149316.1U CN201620149316U CN205374005U CN 205374005 U CN205374005 U CN 205374005U CN 201620149316 U CN201620149316 U CN 201620149316U CN 205374005 U CN205374005 U CN 205374005U
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Abstract
The utility model relates to an analogue means of on -vehicle light modulator, module, duty cycle modulation module, wavelength tester and luminance tester take place including square signal, the module takes place and is connected with the duty cycle modulation module for square signal, the duty cycle modulation module is connected with equipment under test. The utility model discloses an analogue means of on -vehicle light modulator has advantages such as with low costs, efficient, easy operation.
Description
Technical field
This utility model relates to automobile technical field, the analog of especially a kind of vehicle-mounted dimmer.
Background technology
In order to improve the comfort level under different luminous environments, the display lamp brightness of the mobile units such as the automobile instrument of automobile and vehicle audio is controlled.By regulating the display lamp brightness under different luminous environments of the equipment such as automobile instrument and vehicle audio, it is possible to adapt to brightness demand under various circumstances, improve driving safety.Such as, when driving at night, if automobile instrument brightness keeps the brightness the same with daytime, then driver may be allowed to feel too dazzling, affect driving safety.Therefore, the display lamp regulatory function of the mobile unit such as automobile instrument and vehicle audio is very important.In the prior art, the display lamp brightness regulation of the mobile unit such as automobile instrument panel and vehicle audio carries out, typically by vehicle-mounted dimmer, the adjustment that light is strong and weak.The pwm signal that automobile bus sends received by vehicle-mounted dimmer, according to pwm signal, the display lamp brightness of mobile unit is adjusted.
But, at the development process of the mobile unit such as automobile instrument and vehicle audio, production process and QA(QualityAssurance) in detection process, the display lamp brightness control function how testing these mobile units is cumbersome.The mobile unit such as automobile instrument or vehicle audio is mainly connected to function signal generator or carries out real steering vectors by current method of testing.Owing to the cost of function signal generator is very high, needing to connect 220V power supply and power during test, and need the signal of collection vehicle CAN in advance function signal generator to be configured again, arrange complicated operation, efficiency is low.Adopt real steering vectors that the display lamp brightness control function of these mobile units carries out test and there is also the problem such as cost height, low, the complicated operation of efficiency.Wherein, production process and can not carry out real steering vectors in QA detection process, can only be carry out real steering vectors, test inconvenience in development process.
Utility model content
The purpose of this utility model is in that to provide the analog of the vehicle-mounted dimmer that a kind of cost is low, efficiency is high, simple to operate.
The analog of a kind of vehicle-mounted dimmer, including square-wave signal generation module, duty ratio modulation module, wavelength measurement instrument and luminance test instrument；Square-wave signal generation module is connected with duty ratio modulation module；Duty ratio modulation module is connected with equipment under test.
Further, the display device for showing the frequency of square-wave signal, dutycycle and amplitude is also included.
Further, duty ratio modulation module includes multiple switch, the dutycycle ratio that each switch correspondence is preset.
The analog of vehicle-mounted dimmer of the present utility model can simulate real vehicle bus and vehicle-mounted dimmer to mobile unit, for instance the display lamp light modulation of automobile instrument and vehicle audio etc..Namely, the analog of vehicle-mounted dimmer of the present utility model can be used for testing mobile unit, the display lamp regulatory function of such as automobile instrument and vehicle audio etc., and can be used in the development process of the mobile unit such as automobile instrument and vehicle audio, production process and QA(QualityAssurance) detection process carries out the light modulation test of display lamp.The display lamp brightness control function of mobile unit is tested by the analog adopting vehicle-mounted dimmer of the present utility model, then be made without real steering vectors, test simplicity, and cost is low, and efficiency is high.
Accompanying drawing explanation
Fig. 1 is the block schematic illustration of the analog of the vehicle-mounted dimmer of an embodiment.
Fig. 2 is the workflow diagram of the analog of the vehicle-mounted dimmer of an embodiment.
Detailed description of the invention
Below in conjunction with specific embodiment and accompanying drawing, the analog of the vehicle-mounted dimmer of this utility model is described in further detail.
As it is shown in figure 1, in a preferred embodiment, the analog of vehicle-mounted dimmer of the present utility model includes square-wave signal generation module, duty ratio modulation module, wavelength measurement instrument and luminance test instrument.Square-wave signal generation module adopts square wave signal generator.Square wave signal generator less costly, it is possible to adopting lithium battery power supply, volume is little, easy and simple to handle.Further, the square-wave signal of square-wave signal generation module output is with dutycycle, it is possible to be conveniently adjusted the signal of output different duty.Square-wave signal generation module is for exporting the square-wave signal with dutycycle to duty ratio modulation module.Duty ratio modulation module is for regulating the dutycycle of the square-wave signal of square-wave signal generation module output, and exports the square-wave signal that have adjusted dutycycle to equipment under test, to reach the dimming control function of simulation real vehicle bus and vehicle-mounted dimmer.Wherein, equipment under test includes automobile instrument, vehicle audio etc..Equipment under test regulates display lamp output brightness according to the square-wave signal received.Wavelength measurement instrument is for testing the wavelength of the display lamp of equipment under test output.Luminance test instrument is for testing the brightness of the display lamp of equipment under test output.The production process and QA detection process of equipment under test need not use wavelength measurement instrument and luminance test instrument, it is only necessary to utilize the regulatory function of the display lamp brightness of square-wave signal generation module and duty ratio modulation module testing equipment under test.In the development process of equipment under test, the light modulation of the display lamp of equipment under test accurately tested by available wavelength measurement instrument and luminance test instrument.
Further, the analog of vehicle-mounted dimmer of the present utility model also includes display device, for showing the frequency of square-wave signal, dutycycle and amplitude.
Preferably, can pre-set multiple dutycycle ratio for testing, then user need not repeatedly regulate repeatedly when test so that test operation is more simple and efficient.In the present embodiment, pre-set 4 different dutycycle ratios, and by 4 switches correspondence respectively.
The work process of the analog of vehicle-mounted dimmer of the present utility model specifically includes: first, the duty ratio modulation module of the analog of vehicle-mounted dimmer is connected to equipment under test, for instance automobile instrument；Powering on then to the square-wave signal generation module of analog of vehicle-mounted dimmer, square-wave signal generation module output square-wave signal is to duty ratio modulation module；Open the display lamp light of equipment under test；Then opening the switch of a certain dutycycle ratio, the dutycycle of the square-wave signal that square wave signal generating module exports is adjusted by the dutycycle ratio that duty ratio modulation module selects according to user；Square-wave signal after duty ratio modulation module regulates exports to equipment under test；Equipment under test regulates the display lamp brightness of output according to the square-wave signal received；Utilize the light wavelength of wavelength measurement instrument test equipment under test, utilize the lamplight brightness of luminance test instrument test equipment under test.
Therefore, the analog of vehicle-mounted dimmer of the present utility model can simulate real vehicle bus and vehicle-mounted dimmer to mobile unit, for instance the display lamp light modulation of automobile instrument and vehicle audio etc..That is, the analog of vehicle-mounted dimmer of the present utility model can be used for testing mobile unit, for instance the display lamp light regulatory function of automobile instrument and vehicle audio etc..The display lamp light regulatory function of mobile unit is tested by the analog adopting vehicle-mounted dimmer of the present utility model, then be made without real steering vectors, test simplicity, and cost is low, and efficiency is high.
Although description of the present utility model is carried out in conjunction with embodiments above, but, those skilled in the art can carry out many replacements, modifications and variations according to above-mentioned content, be apparent from.Therefore, all such replacements, improvement and change all include in the spirit and scope of appended claims.
Claims (3)
1. the analog of a vehicle-mounted dimmer, it is characterised in that include square-wave signal generation module, duty ratio modulation module, wavelength measurement instrument and luminance test instrument；Described square-wave signal generation module is connected with described duty ratio modulation module；Described duty ratio modulation module is connected with equipment under test.
2. the analog of vehicle-mounted dimmer according to claim 1, it is characterised in that also include the display device for showing the frequency of square-wave signal, dutycycle and amplitude.
3. the analog of vehicle-mounted dimmer according to claim 1, it is characterised in that described duty ratio modulation module includes multiple switch, the dutycycle ratio that each switch correspondence is preset.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620149316.1U CN205374005U (en) | 2016-02-29 | 2016-02-29 | Analogue means of on -vehicle light modulator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620149316.1U CN205374005U (en) | 2016-02-29 | 2016-02-29 | Analogue means of on -vehicle light modulator |
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| Publication Number | Publication Date |
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| CN205374005U true CN205374005U (en) | 2016-07-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201620149316.1U Active CN205374005U (en) | 2016-02-29 | 2016-02-29 | Analogue means of on -vehicle light modulator |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107229270A (en) * | 2017-06-02 | 2017-10-03 | 中国航发南方工业有限公司 | Power control box Auto-Test System |
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2016
- 2016-02-29 CN CN201620149316.1U patent/CN205374005U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107229270A (en) * | 2017-06-02 | 2017-10-03 | 中国航发南方工业有限公司 | Power control box Auto-Test System |
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