CN209198540U - A kind of real-time time-base signal source self-checking device - Google Patents
A kind of real-time time-base signal source self-checking device Download PDFInfo
- Publication number
- CN209198540U CN209198540U CN201821434693.5U CN201821434693U CN209198540U CN 209198540 U CN209198540 U CN 209198540U CN 201821434693 U CN201821434693 U CN 201821434693U CN 209198540 U CN209198540 U CN 209198540U
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- time
- base signal
- signal source
- frequency
- terminal control
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Abstract
The utility model is a kind of real-time time-base signal source self-checking device, it mainly includes terminal control module and time-base signal source calibration device, it is characterised in that: the terminal control module is connect with universal counter, program-controlled radio-frequency switch, tested time-base signal source；Direct measurement standard device of the universal counter as frequency, the program-controlled radio-frequency switch can connect more time-base signal sources simultaneously, play the role of channel conversion, and the sine-shaped signal of collected tested time-base signal source output is input to universal counter；Terminal control module is completed measured data storage and is calculated, and calibrator can carry out printing certificate by terminal control module；The utility model has the advantages that: the status that previous time-base signal source cannot be traced to the source by existing Frequency Standard Comparison system is solved, the extensive use of Shi Jiyuan is facilitated.
Description
Technical field
The utility model relates to terminal control module and time-base signal source calibration devices, are a kind of based on terminal control
Real-time time-base signal source self-checking device.
Background technique
Frequency standard refers to the device that can provide the sinusoidal oscillator signal of single-frequency value of high accuracy, frequency
Value is mostly 1MHz, 5MHz, 10MHz；Frequency standard provides stable operation rhythm for electronic system, is to constitute electronic system
(radar, communication, observing and controlling, navigation, space electronic equipment etc.) indispensable important component of integrality, time-base signal source are made
For a kind of frequency standard, frequency values are mostly 100kHz, 500kHz.
With the development of the control technologies such as hyundai electronics, power communication and aerospace, requirement of the system to frequency standard
Also higher and higher；Need frequency standard that there is excellent stability and higher accuracy, the stability and frequency of frequency standard
Rate accuracy will be traceable to the measurement unit of upper level as the important indicator for measuring frequency standard, be for frequency at present
The frequency standard of 1MHz, 5MHz, 10MHz can be traceable to the highest measurement criteria in China based on the rubidium atomic frequency standard of GPS
(frequency accuracy reaches 1 × 10-11The order of magnitude), Frequency Standard Comparison test macro, and at present time-base signal source (100kHz, 500
KHz it) will be unable to trace to the source by this Compare System, for metering institute, China also without the mode of tracing to the source of such frequency standard, this is right
The application of such frequency standard produces limitation.
If existing quantitative study department makes full use of terminal control module, what the calibration that frequency is implemented in control connection needed
Standard will realize the automatic calibration in time-base signal source, have good short-term stability and long-term stability or higher
Frequency accuracy, tracing to the source for time-base signal source can be effectively provided.
Summary of the invention
The purpose of this utility model is to provide a kind of real-time time-base signal source self-checking devices, can facilitate people couple
In the requirement that time-base signal source is traced to the source.The core of the device is the direct frequency measurement to crystal oscillation signal；In order to solve it is above-mentioned this
One problem, the utility model are achieved through the following technical solutions, a kind of real-time time-base signal based on terminal control module
Source automated calibration system, the universal counter including terminal control module, with frequency measurement function is as standard of tracing to the source
(0.03Hz~100MHz), program-controlled radio-frequency switch (acquisitions and switch conversion of data), measurand time-base signal source；The end
End control module is connect with universal counter (frequency measurement)；The program-controlled radio-frequency switch is connect with universal counter, will be acquired
The sine wave signal input universal counter arrived, and measurement while realize more measurands；Program-controlled radio-frequency switch with
The connection of time-base signal source, the sine wave signal of Ji Yuan output when program-controlled radio-frequency switch acquires, and complete the automatic conversion in channel.
Preferably, the terminal control module completes the storage of the frequency measured value read from universal counter, and leads to
The accuracy that the stability and frequency of frequency is calculated in the formula set is crossed, the beginning and end of calibration process are controlled, it is complete
At writing for calibration original record, control printing calibration certificate.
Preferably, the universal counter completes the survey of the frequency of the sine-wave oscillation signal of program-controlled radio-frequency switch input
Amount.
Preferably, program-controlled radio-frequency switch completes the acquisition of the sine wave signal of clock synchronization base signal source output, and multiple
When tested time-base signal source is calibrated simultaneously, the conversion and selection of multichannel.
Preferably, the time-base signal source and program-controlled radio-frequency switch connect, and oscillator signal is output to by time-base signal source
Program-controlled radio-frequency switch.
The utility model realizes that more time-base signal sources are real by the operation to terminal control module and frequency measuring equipment
When automatically calibrate, solve previous Frequency Standard Comparison system and be unable to the shortcoming that clock synchronization base signal source is traced to the source, base when facilitating
The extensive use of signal source.
Detailed description of the invention
Fig. 1 is the overall structure diagram of the real-time time-base signal source self-checking device of the utility model.
Specific embodiment
The utility model is described in further detail with specific embodiment with reference to the accompanying drawing.
Shown in referring to Fig.1, a kind of real-time time-base signal source self-checking device, including terminal control module (1), general meter
Number device (2), program-controlled radio-frequency switch (3), time-base signal source (4)；The terminal control module (1) connect with universal counter (2),
Wherein, it is communicated between terminal control module (1) and universal counter (2) by RS-232；The program-controlled radio-frequency switchs (3)
It is connect respectively with universal counter (2), time-base signal source (4), and will be defeated from time-base signal source (4) collected sine-shaped signal
Universal counter (2) are arrived out.
Fixed is connected to by terminal control module (1), universal counter (2), program-controlled radio-frequency switch (3) as shown in Figure 1
It is used for the calibration in time-base signal source together, tested time-base signal source (4) need to only to be accessed program-controlled radio-frequency switch (3), beaten by calibrator
Open universal counter (2), program-controlled radio-frequency switch (3), time-base signal source (4) power switch, pass through operating terminal control module
(1) calibration can be started, calibration data will automatically be stored in terminal control module, calculate by programming public
Formula can calculate the frequency stability and frequency accuracy of tested time-base signal source (4) --- frequency standard it is most important
Metering performance index, calibrator can complete calibration certificate by terminal control module and calibrate the printing of original record.
The foregoing is merely specific embodiment of the utility model, but the technical characteristics of the utility model is not limited to
This, in the field of the utility model, made changes or modifications all cover practical new at this any those skilled in the art
Among the scope of the patents of type.
Claims (2)
1. a kind of real-time time-base signal source self-checking device, it is characterised in that: including terminal control module (1), general counting
Device (2), program-controlled radio-frequency switch (3), time-base signal source (4)；The terminal control module (1) is used for automatic collection universal counter
(2) frequency values measured, by the formula write be calculated tested time-base signal source frequency stability and frequency it is accurate
Database is spent and stored, while carrying out the printing of certificate and original record；The universal counter (2) can be to input
The frequency values of sinusoidal oscillator signal measure；The program-controlled radio-frequency switch (3) can be realized more time-base signal sources simultaneously
Calibration, and the sinusoidal oscillator signal of tested time-base signal source output is acquired, it is output to universal counter (2).
2. a kind of real-time time-base signal source self-checking device according to claim 1, it is characterised in that: the terminal control
The frequency calibration device that molding block (1), universal counter (2), program-controlled radio-frequency switch (3) form can complete clock synchronization base signal source
(4) calibration, the defect of Frequency Standard Comparison system can not be traceable to by making up time-base signal source at present.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821434693.5U CN209198540U (en) | 2018-09-03 | 2018-09-03 | A kind of real-time time-base signal source self-checking device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821434693.5U CN209198540U (en) | 2018-09-03 | 2018-09-03 | A kind of real-time time-base signal source self-checking device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209198540U true CN209198540U (en) | 2019-08-02 |
Family
ID=67405770
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821434693.5U Expired - Fee Related CN209198540U (en) | 2018-09-03 | 2018-09-03 | A kind of real-time time-base signal source self-checking device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209198540U (en) |
-
2018
- 2018-09-03 CN CN201821434693.5U patent/CN209198540U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| 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: 20190802 Termination date: 20200903 |