CN205229691U - GMB infrared light curtain target photoelectricity time delay time measuring instrument - Google Patents
GMB infrared light curtain target photoelectricity time delay time measuring instrument Download PDFInfo
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- CN205229691U CN205229691U CN201521080633.4U CN201521080633U CN205229691U CN 205229691 U CN205229691 U CN 205229691U CN 201521080633 U CN201521080633 U CN 201521080633U CN 205229691 U CN205229691 U CN 205229691U
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- Prior art keywords
- light curtain
- infrared light
- target
- curtain target
- time measuring
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- Photometry And Measurement Of Optical Pulse Characteristics (AREA)
Abstract
The utility model discloses a GMB infrared light curtain target photoelectricity time delay time measuring instrument, including I target of infrared light curtain target, II targets of infrared light curtain target, light curtain target power supply, high -speed electronic switch and time measuring unit, wherein, time measuring unit includes main control unit, data acquisition circuit, LCD circuit, power module circuit and RS232 circuit, main control unit has TDC technique chip. The utility model discloses a characteristics of infrared light curtain target photoelectricity time delay time measuring appearance not only can realize starting and stopping the measurement of two infrared light curtain target photoelectricity delay inequalities, can calibrate two infrared light curtain targets moreover.
Description
Technical field
The utility model relates to a kind of GMB infrared light curtain target photoelectricity time delay time keeping instrument.
Background technology
At present, the movement velocity accurately, reliably measuring bullet often adopts average velocity method to measure the movement velocity of bullet, and speed measuring device can be made up of zone-block device (velocity measurement target) and time-measuring gauge.The method of usually calibrating this velocity-measuring system is individually carried out zone-block device (velocity measurement target) and time-measuring gauge.Time-measuring gauge can be traceable to the highest time and frequency standard of country easily, and its uncertainty of measurement can reach 0.1 μ s magnitude.Zone-block device form velocity-measuring system mainly adopt " standard " zone-block device to be calibrated zone-block device compare calibration method, but in fact zone-block device also relates to the consistance of startup, stop signal, even if the resolution of time-measuring gauge reaches 10
-7s, in fact produced time determination error still depends on the ability of the level signal that zone-block device exports and time-measuring gauge shaping circuit.
So in fact the main uncertainty of Projectile velocity measurements system derives from its zone-block device used, as infrared light curtain target.And the domestic calibrating installation not yet setting up infrared light curtain target at present, the infrared light curtain target great majority used do not carry out tracing to the source being in metering runaway condition, small part is adopted the simple survey instruments such as steel tape to trace to the source by applying unit, operate lack of standardization, be simply equipped, there is larger uncertainty of measurement.Therefore be necessary to develop special calibrating installation for Infrared Light Screen System, solve the problem that it can not be traced to the source, and improve the accuracy of measurement of China in Projectile velocity measurements.
Utility model content
The utility model, in order to solve the above-mentioned deficiency of prior art, proposes a kind of GMB infrared light curtain target photoelectricity time delay time keeping instrument.
In order to solve the problems of the technologies described above, the utility model is by the following technical solutions: a kind of GMB infrared light curtain target photoelectricity time delay time keeping instrument, comprise infrared light curtain target I target, infrared light curtain target II target, to the light curtain target power supply that outer light curtain target I target and infrared light curtain target II target are powered, be arranged on the high speed electronic switch in light curtain target power supply supply line, with control high speed electronic switch and calculate the time measuring unit of calibration two pieces of infrared light curtain target photoelectricity delay inequalities, wherein, described time measuring unit comprises master controller, for accepting the data acquisition circuit of the trigger pulse of two pieces of infrared light curtain targets, for showing the LCD circuit in the time interval of two trigger pulses, power module circuitry and RS232 circuit, described master controller has TDC technology chip.
Compared with prior art, the feature of infrared light curtain target photoelectricity time delay time-measuring gauge of the present utility model is the measurement that not only can realize starting and stopping two pieces of infrared light curtain target photoelectricity delay inequalities, and can calibrate two pieces of infrared light curtain targets, the utility model can apply to industry, Aero-Space, geodetic surveying simultaneously, construction account, navigator fix, high-precision time service and Time transfer receiver, the test and scientific experiment etc. of frequency source need the field of high precision time interval.
Accompanying drawing explanation
Fig. 1 is control structure schematic diagram of the present utility model.
Embodiment
Below in conjunction with drawings and Examples, utility model is described in detail.
As shown in Figure 1, the GMB infrared light curtain target photoelectricity time delay time keeping instrument that the utility model proposes, comprise infrared light curtain target I target, infrared light curtain target II target, to the light curtain target power supply that outer light curtain target I target and infrared light curtain target II target are powered, be arranged on the high speed electronic switch in light curtain target power supply supply line, with control high speed electronic switch and calculate the time measuring unit of calibration two pieces of infrared light curtain target photoelectricity delay inequalities, wherein, described time measuring unit comprises master controller, for accepting the data acquisition circuit of the trigger pulse of two pieces of infrared light curtain targets, for showing the LCD circuit in the time interval of two trigger pulses, power module circuitry and RS232 circuit, described master controller has TDC technology chip.
During specific works, first instruction is sent by the primary controller in time measuring unit, send a gating pulse and control high speed electronic switch, then the LED of high speed electronic switch cut-out infrared light curtain target I target and II target powers, now the LED of two targets extinguishes simultaneously, and two targets send trigger pulse T1 and T2 respectively.
Secondly time measuring unit by master controller with adopt time figure switch technology and TDC technology chip to set up to communicate, master controller completes the Initialize installation of reset to TDC chip and register by spi bus transmission instruction; Then start pulse signal T1 and T2 that the LED cutting off infrared light curtain target I target and II target sends when powering waited for by controller in interruption.
Finally, by software programming, primary controller calculates the time interval of these two trigger pulses and is presented in the LCD display in LCD circuit.
Above-described embodiment only have expressed several embodiment of the present utility model, and it describes comparatively concrete and detailed, but therefore can not be interpreted as the restriction to the utility model the scope of the claims.It should be pointed out that for the person of ordinary skill of the art, without departing from the concept of the premise utility, can also make some distortion and improvement, these all belong to protection domain of the present utility model.Therefore, the utility model patent and protection domain should be as the criterion with appended claims.
Claims (1)
1. a GMB infrared light curtain target photoelectricity time delay time keeping instrument, it is characterized in that: comprise infrared light curtain target I target, infrared light curtain target II target, to the light curtain target power supply that outer light curtain target I target and infrared light curtain target II target are powered, be arranged on the high speed electronic switch in light curtain target power supply supply line, with control high speed electronic switch and calculate the time measuring unit of calibration two pieces of infrared light curtain target photoelectricity delay inequalities, wherein, described time measuring unit comprises master controller, for accepting the data acquisition circuit of the trigger pulse of two pieces of infrared light curtain targets, for showing the LCD circuit in the time interval of two trigger pulses, power module circuitry and RS232 circuit, described master controller has TDC technology chip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521080633.4U CN205229691U (en) | 2015-12-23 | 2015-12-23 | GMB infrared light curtain target photoelectricity time delay time measuring instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521080633.4U CN205229691U (en) | 2015-12-23 | 2015-12-23 | GMB infrared light curtain target photoelectricity time delay time measuring instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205229691U true CN205229691U (en) | 2016-05-11 |
Family
ID=55904742
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521080633.4U Expired - Fee Related CN205229691U (en) | 2015-12-23 | 2015-12-23 | GMB infrared light curtain target photoelectricity time delay time measuring instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205229691U (en) |
-
2015
- 2015-12-23 CN CN201521080633.4U patent/CN205229691U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160511 Termination date: 20161223 |