CN201773107U - Light emitting diode multi-lamp velocimeter - Google Patents
Light emitting diode multi-lamp velocimeter Download PDFInfo
- Publication number
- CN201773107U CN201773107U CN 201020255575 CN201020255575U CN201773107U CN 201773107 U CN201773107 U CN 201773107U CN 201020255575 CN201020255575 CN 201020255575 CN 201020255575 U CN201020255575 U CN 201020255575U CN 201773107 U CN201773107 U CN 201773107U
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- light emitting
- emitting diode
- microprocessor
- adjustable
- frequency generator
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Abstract
The utility model provides a light emitting diode multi-lamp velocimeter, which comprises a power supply, an adjustable frequency generator, a microprocessor, a light emitting diode driving module and more than two light emitting diode lamp groups, wherein the microprocessor starts the light emitting diode lamp groups in an intermittent mode to flash through obtained frequency signals of the adjustable frequency generator, flashed light rays are irradiated on a rotating object, when the rotating object is marked in static, intermittent starting lighting period is measured, and the period is converted to frequency to obtain the rotating frequency of the rotating object. The light emitting diode multi-lamp velocimeter uses a device structure which drives a plurality of light emitting diodes in an intermittent mode, overcomes the problem in the stroboscopic velocity measurement technology that the light emitting diodes can not response high frequency rotating speed measurement in time.
Description
Technical field
The utility model relates to the stroboscopic field of testing the speed, and is specifically related to a kind of many lamps of light emitting diode knotmeter.
Background technology
Usually by driving gas lamp flicker irradiation rotating object, when the reflecrtive mark on the rotating object was stationary state in human eye, the measurement hernia lamp flicker frequency of measuring this moment was the gyro frequency of rotating object to traditional stroboscopic knotmeter.The hernia lamp needs civil power to drive, and makes troubles to the object wheel measuring under the several scenes, and after hernia lamp flicker frequency is excessive, " conducting " can occurs and damage.
Now the stroboscopic speed measuring device of technology uses light emitting diode as light source, but light emitting diode also exists response speed slow, is difficult to realize the measurement to high-speed rotary body speed.
The utility model content
In view of this, in order to address the above problem, the utility model proposes a kind of many lamps of light emitting diode knotmeter, drive a plurality of LED flash by batch (-type), overcome under the situation of stroboscopic knotmeter high-frequency driven for emitting lights diode flicker, single light emitting diode can't in time respond the problem of flicker.
The purpose of this utility model is achieved in that many lamps of light emitting diode knotmeter, comprises power supply, adjustable frequency generator, microprocessor, LED driving module and plural LED light lamp group; Microprocessor comprises counter and control module; The frequency signal of adjustable frequency generator is by the counter input microprocessor; The data input pin of control module is connected with the data output end of counter; The data output end of control module is connected with the data input pin of LCDs; The control output end of control module is connected with the control input end of LED driving module; The drive output of LED driving module is connected with the driving input end of each LED light lamp group; The power source voltage output terminal is connected with the voltage input end of adjustable frequency generator, microprocessor and LED driving module respectively.
Further, the adjustable frequency generator is 555 oscillators, and the frequency adjustable end of 555 oscillators is connected with adjustable resistance;
Further, microprocessor is the HT46RU232 single-chip microcomputer;
Further, LED driving module is the ULN2003 chip.
The beneficial effects of the utility model are: adopt batch (-type) to drive the apparatus structure of a plurality of light emitting diodes, overcome in the stroboscopic velocity measuring technique, light emitting diode can't in time respond the problem of high-frequency tachometric survey.
Description of drawings
In order to make the purpose of this utility model, technical scheme and advantage clearer, the utility model is described in further detail below in conjunction with accompanying drawing:
Fig. 1 is many lamps of light emitting diode knotmeter structural drawing;
Fig. 2 is the light emitting diode workflow diagram;
Fig. 3 is the workflow diagram of two LED flash of batch (-type) control.
Embodiment
Hereinafter with reference to accompanying drawing, preferred embodiment of the present utility model is described in detail.
As shown in Figure 1, many lamps of light emitting diode knotmeter comprises power supply 1, adjustable frequency generator 2, microprocessor 6, LED driving module 7 and plural LED light lamp group; Microprocessor 6 comprises counter 5 and control module 4; The frequency signal of adjustable frequency generator 2 is by counter 5 input microprocessors 6; The data input pin of control module 4 is connected with the data output end of counter 5; The data output end of control module 4 is connected with the data input pin of LCDs 8; The control output end of control module 4 is connected with the control input end of LED driving module 7; The drive output of LED driving module 7 is connected with the driving input end of each LED light lamp group; The voltage output end of power supply 1 is connected with adjustable frequency generator 2, microprocessor 6 and the voltage input end of LED driving module 7 respectively.
Adjustable frequency generator 2 is 555 oscillators, and the frequency adjustable end of 555 oscillators is connected with adjustable resistance.
Microprocessor 6 is the HT46RU232 single-chip microcomputer.
LED driving module 7 is the ULN2003 chip.
As shown in Figure 2, during the work of many lamps of light emitting diode knotmeter, adjustable frequency generator 2 is heightened frequency output gradually, control module 4 obtains the output frequency of adjustable frequency generator 2 by counter 5 simultaneously, frequency is converted into the cycle, doubly (N is the integer more than or equal to 1 by the N in acquisition cycle, determine according to the responding ability of actual test object rotating speed and light emitting diode) the cycle batch (-type) starts two groups of LED light lamp groups flickers, when detecting being labeled as of testee when static, control module 4 goes to calculate the rotational frequency of rotating object by the alternately flicker cycle of LED light lamp group.
Show the process that control module 4 obtains two groups of LED flash cycles as Fig. 3, after control module 4 obtains the frequency signal of adjustable frequency generator 2, intermittently start two groups of LED light lamp group flickers by some cycles, when first group of light emitting diode 10 is driven flicker, the device of enabling counting simultaneously 5, incoming frequency counting according to adjustable frequency generator 2, when second group of light emitting diode 11 is driven flicker, counter 5 stops counting, control module 4 obtains total count value from counter, control module 4 will be counted total value intermittently starts the LED light lamp group divided by the frequency generation of adjustable frequency generator 2 inputs cycle, be the swing circle of tested rotating object, and swing circle is scaled rotation frequency signal; Control module 4 is by the data input pin input rotation frequency signal of data output end to LCDs 8.
The above is a preferred embodiment of the present utility model only, is not limited to the utility model, and obviously, those skilled in the art can carry out various changes and modification and not break away from spirit and scope of the present utility model the utility model.Like this, if of the present utility model these are revised and modification belongs within the scope of the utility model claim and equivalent technologies thereof, then the utility model also is intended to comprise these changes and modification interior.
Claims (4)
1. many lamps of light emitting diode knotmeter is characterized in that: comprise power supply, adjustable frequency generator, microprocessor, LED driving module and plural LED light lamp group; Microprocessor comprises counter and control module; The frequency signal of adjustable frequency generator is by the counter input microprocessor; The data input pin of control module is connected with the data output end of counter; The data output end of control module is connected with the data input pin of LCDs; The control output end of control module is connected with the control input end of LED driving module; The drive output of LED driving module is connected with the driving input end of each LED light lamp group; The power source voltage output terminal is connected with the voltage input end of adjustable frequency generator, microprocessor and LED driving module respectively.
2. many lamps of light emitting diode knotmeter as claimed in claim 1 is characterized in that: the adjustable frequency generator is 555 oscillators, and the frequency adjustable end of 555 oscillators is connected with adjustable resistance.
3. many lamps of light emitting diode knotmeter as claimed in claim 2 is characterized in that: microprocessor is the HT46RU232 single-chip microcomputer.
4. many lamps of light emitting diode knotmeter as claimed in claim 3 is characterized in that: LED driving module is the ULN2003 chip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201020255575 CN201773107U (en) | 2010-07-12 | 2010-07-12 | Light emitting diode multi-lamp velocimeter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201020255575 CN201773107U (en) | 2010-07-12 | 2010-07-12 | Light emitting diode multi-lamp velocimeter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201773107U true CN201773107U (en) | 2011-03-23 |
Family
ID=43752953
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201020255575 Expired - Fee Related CN201773107U (en) | 2010-07-12 | 2010-07-12 | Light emitting diode multi-lamp velocimeter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201773107U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109121252A (en) * | 2018-09-25 | 2019-01-01 | 深圳市中州远光照明科技有限公司 | A kind of LED drive power |
-
2010
- 2010-07-12 CN CN 201020255575 patent/CN201773107U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109121252A (en) * | 2018-09-25 | 2019-01-01 | 深圳市中州远光照明科技有限公司 | A kind of LED drive power |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110323 Termination date: 20110712 |