CN207603611U - The device of high-precision trigger pulse is generated based on GPS - Google Patents
The device of high-precision trigger pulse is generated based on GPS Download PDFInfo
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- CN207603611U CN207603611U CN201820238951.6U CN201820238951U CN207603611U CN 207603611 U CN207603611 U CN 207603611U CN 201820238951 U CN201820238951 U CN 201820238951U CN 207603611 U CN207603611 U CN 207603611U
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- 239000013078 crystal Substances 0.000 claims abstract description 8
- JEIPFZHSYJVQDO-UHFFFAOYSA-N ferric oxide Chemical compound O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 abstract 1
- 238000000034 method Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 210000001367 artery Anatomy 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 210000003462 vein Anatomy 0.000 description 1
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Abstract
The utility model discloses a kind of device that high-precision trigger pulse is generated based on GPS, technical solution is：By nominal frequency for N times of target frequency have the reality output pulse of source crystal oscillator based on, on the basis of the pulse per second (PPS) of GPS module, calculate the difference of the reality output umber of pulse of source crystal oscillator and N times of frequency of target pulse frequency, in the impulse train that the difference of this frequency is assigned to frequency dividing with Programmadle logic device CPLD, the target pulse frequency is high-precision trigger pulse frequency.The utility model is using GPS second signal as benchmark, make the precision of the trigger pulse of generation have guarantee, and using the algorithm of interpolation pulse, the uniformity for making trigger pulse is very high, in addition using temperature compensation algorithm, it ensure that GPS loses the work that star can also be stablized in short term.
Description
Technical field：
The utility model is related to a kind of pulse generating methods, and high-precision triggering arteries and veins is generated based on GPS more particularly to one kind
The algorithm and processing unit (plant) of punching.
Background technology：
When carrying out data acquisition, in order to which the later stage carries out data the operation of the correlations such as comparison processing, to analog signal
, must be very high to the required precision of trigger pulse when being sampled, the initial phase of the waveform including more collecting device acquisitions
The absolute moment and sampling time interval, and common device is extremely difficult to require.
Utility model content：
Technical problem to be solved in the utility model is：A kind of utilization GPS is overcome the deficiencies of the prior art and provide to export
Second signal, can realize using microcontroller combination CPLD high-precision trigger pulse high-precision trigger pulse is generated based on GPS
Device.
The technical solution of the utility model is：A kind of device that high-precision trigger pulse is generated based on GPS, including GPS moulds
Block, microcontroller and temperature sensor, the microcontroller and Programmadle logic device CPLD are connected with each other, the GPS module difference
It is connect with the microcontroller and Programmadle logic device CPLD, the Programmadle logic device CPLD is with there is source crystal oscillator to connect, institute
It states microcontroller to connect with the temperature sensor, the high-precision pps pulse per second signal exported using GPS module is patrolled by editable
Device CPLD and the microcontroller are collected, continual, constant, high-precision trigger pulse is generated, by establishing environment temperature
With the model of clock frequency, influence of the environment temperature to pulse precision is effectively eliminated, is ensured defeated at a temperature of complex environment
Go out high-precision pulse.
The microcontroller uses 32 microcontrollers of STM32 series.
The beneficial effects of the utility model are：
1st, the utility model makes the precision of the trigger pulse of generation have guarantee using GPS second signal as benchmark, and
The uniformity for making trigger pulse using the method for interpolation pulse is very high.
2nd, the utility model has source crystal oscillator that can also reach high-precision pulse output, and use using general precision
Temperature-compensation method ensure that GPS loses the work that star can also be stablized in short term.
3rd, the utility model is designed reasonably, easily implement, can realize high-precision trigger pulse, implementation easy to spread,
It is with good economic efficiency.
Description of the drawings：
Fig. 1 is the structure diagram for the device that high-precision trigger pulse is generated based on GPS；
Fig. 2 is the schematic diagram for generating high-precision trigger pulse.
Specific embodiment：
Embodiment：The device of high-precision trigger pulse is generated based on GPS, including GPS module, microcontroller and temperature sensing
Device, microcontroller and Programmadle logic device CPLD are connected with each other, GPS module respectively with microcontroller and Programmadle logic device CPLD
Connection, with there is source crystal oscillator to connect, microcontroller is connect Programmadle logic device CPLD with temperature sensor, is exported using GPS module
High-precision pps pulse per second signal, by Programmadle logic device CPLD and microcontroller, generate continual, constant, high-precision
The trigger pulse of degree by establishing the model of environment temperature and clock frequency, effectively eliminates environment temperature to pulse precision
Influence, ensure to export high-precision pulse at a temperature of complex environment.Microcontroller uses 32 microcontrollers of STM32 series.
In the operating temperature range of permission, the frequency of source crystal oscillator is recorded when environment temperature often changes 0.1 degree, is made
Make a temperature-frequency and correspond to table；It when GPS loses star, is outputed without second signal, microcontroller can be according to environment temperature instantly
Degree, tables look-up to obtain a frequency values, is exactly an accurate second signal whenever having the pulse that source crystal oscillator exports this numerical value,
Accurately trigger pulse can be obtained with interpolation algorithm.
The above descriptions are merely preferred embodiments of the present invention, and not the utility model is made in any form
Limitation, it is every according to the technical essence of the utility model to above example made it is any it is simple modification, equivalent variations with
Modification, in the range of still falling within technical solutions of the utility model.
Claims (2)
1. a kind of device that high-precision trigger pulse is generated based on GPS, special including GPS module, microcontroller and temperature sensor
Sign is：The microcontroller and Programmadle logic device CPLD are connected with each other, and the GPS module is respectively with that the microcontroller and can compile
Logic device (CPLD) connection is collected, the Programmadle logic device CPLD is with there is source crystal oscillator to connect, the microcontroller and the temperature
Sensor connects, and the high-precision pps pulse per second signal exported using GPS module passes through Programmadle logic device CPLD and the list
Piece machine generates continual, constant, high-precision trigger pulse, by establishing the model of environment temperature and clock frequency, has
Influence of the environment temperature to pulse precision is eliminated to effect, ensures to export high-precision pulse at a temperature of complex environment.
2. the device according to claim 1 that high-precision trigger pulse is generated based on GPS, it is characterized in that：The microcontroller
Using 32 microcontrollers of STM32 series.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820238951.6U CN207603611U (en) | 2018-02-10 | 2018-02-10 | The device of high-precision trigger pulse is generated based on GPS |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820238951.6U CN207603611U (en) | 2018-02-10 | 2018-02-10 | The device of high-precision trigger pulse is generated based on GPS |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207603611U true CN207603611U (en) | 2018-07-10 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820238951.6U Active CN207603611U (en) | 2018-02-10 | 2018-02-10 | The device of high-precision trigger pulse is generated based on GPS |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207603611U (en) |
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2018
- 2018-02-10 CN CN201820238951.6U patent/CN207603611U/en active Active
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