CN201909809U - Measuring instrument for 25-Hz phase-sensitive track circuit - Google Patents
Measuring instrument for 25-Hz phase-sensitive track circuit Download PDFInfo
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- CN201909809U CN201909809U CN2010206173919U CN201020617391U CN201909809U CN 201909809 U CN201909809 U CN 201909809U CN 2010206173919 U CN2010206173919 U CN 2010206173919U CN 201020617391 U CN201020617391 U CN 201020617391U CN 201909809 U CN201909809 U CN 201909809U
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Abstract
The utility model discloses a measuring instrument for a 25-Hz phase-sensitive track circuit. The measuring instrument comprises a high input impedance buffer amplification module, an isolation sampling module, a signal amplitude adjustment module, a low-pass filtering module, a DSP (Digital Signal Processor) digitalized collecting and processing module, a memory module, an LCD (Liquid Crystal Display) module, a buzzer and a battery and power supply management module. The measuring instrument adopts the linear isolation sampling and full digitalization processing mode, so as to realize high-accuracy measurement for the track surface voltage of a track, small phase error and stable data and also realize hand-held portable measurement, therefore, the measuring instrument is suitable for the accurate measurement for the track surface voltage and the phase angle difference of the 25-Hz phase-sensitive track circuit so as to monitor the work state of the phase-sensitive track circuit.
Description
Affiliated technical field
The utility model relates to a kind of signal measurement instrument, especially a kind of 25Hz phase-sensitive track circuits meter.
Background technology
At present, 25Hz phase-sensitive track circuits meter generally all detects and the single-chip microcomputer processing mode based on the simulation zero crossing, the data error of measuring is big, especially phase angle difference, unstable, occur mistake easily, can the authenticity and the accuracy of measurement result be impacted thus, thereby may derive a wrong conclusion.
The utility model content
Big in order to overcome existing 25Hz phase-sensitive track circuits meter error, deficiencies such as instability, the utility model provides a kind of 25Hz phase-sensitive track circuits meter.
The technical scheme that its technical matters that solves the utility model adopts is:
25Hz phase-sensitive track circuits meter comprises high input impedance buffering amplification module, isolates sampling module, signal amplitude adjusting module, low-pass filtering module, DSP digital collection processing module, memory module, LCD LCD MODULE, hummer and battery power management module; After connecting signal amplitude adjusting module, low-pass filtering module successively, high input impedance buffering amplification module is connected to DSP digital collection processing module input end; Isolate and be connected to another input end of DSP digital collection processing module after sampling module connects signal amplitude adjusting module, low-pass filtering module successively; DSP digital collection processing module output terminal is connected with memory module, LCD LCD MODULE and hummer; The battery power management module connects DSP digital collection processing module, high input impedance buffering amplification module, signal amplitude adjusting module, low-pass filtering module, LCD LCD MODULE and memory module.
The rail surface voltage signal is through handling in voltage isolation sampling module, signal amplitude adjusting module, the low-pass filtering module input DSP digital collection processing module; The local voltage signal is through handling in high input impedance buffering amplification module, signal amplitude adjusting module, the low-pass filtering module input DSP digital collection processing module; DSP digital collection processing module is done digital spectral phase estimation to the two paths of data of gathering in the storer, and calculates the phase differential and the voltage amplitude of two paths of signals, shows measurement result by the LCD liquid crystal display
The beneficial effects of the utility model are, adopt linear sampling and the totally digitilized processing mode of isolating, and realize the rail surface voltage precision height measured, and phase error is little, data stabilization and can the handheld portable measurement.
Description of drawings
Fig. 1 is the utility model structural representation.
Embodiment
Below in conjunction with drawings and Examples the utility model is further specified.
As shown in Figure 1,25Hz phase-sensitive track circuits meter comprises high input impedance buffering amplification module, isolates sampling module, signal amplitude adjusting module, low-pass filtering module, DSP digital collection processing module, memory module, LCD LCD MODULE, hummer and battery power management module; After connecting signal amplitude adjusting module, low-pass filtering module successively, high input impedance buffering amplification module is connected to DSP digital collection processing module input end; Isolate and be connected to another input end of DSP digital collection processing module after sampling module connects signal amplitude adjusting module, low-pass filtering module successively; DSP digital collection processing module output terminal is connected with memory module, LCD LCD MODULE and hummer; The battery power management module connects DSP digital collection processing module, high input impedance buffering amplification module, signal amplitude adjusting module, low-pass filtering module, LCD LCD MODULE and memory module.
Be provided with A/D conversion input circuit in the DSP digital collection processing module.
Actual measurement:
With measuring the rail surface voltage signal input part of test pencil with rail surface voltage signal input the utility model meter, process is isolated the sampled signal that sampling module obtains rail surface voltage, inputs to signal amplitude and adjusts circuit module; With measuring the local voltage signal input part of test pencil, handle the input signal amplitude adjusting module simultaneously through high input impedance buffering amplification module with local voltage signal input the utility model meter.
After two paths of signals is adjusted through amplitude, A/D conversion input circuit after low-pass filtering module filtering in the input DSP digital collection processing module, after two paths of signals is converted to the digital quantity union as digital collection, digital quantity is imported memory module, dsp processor is made digital spectral phase by the visit memory module to the two paths of data of gathering and is estimated, and calculate the phase differential and the voltage amplitude of two paths of signals, show measurement result through LCD liquid crystal display display module.
The battery power management module through behind the decompression transformation, converts cell voltage to each module required supply voltage.DSP digital collection processing module is gathered the monitoring cell voltage in real time by the battery power management module, the counting cell electric weight, and by LCD liquid crystal display display module, demonstration electric weight size.When electric weight was not enough, DSP drove hummer and sends sound prompting warning.
The utility model adopts linear sampling and the totally digitilized processing mode of isolating, realized the rail surface voltage precision height of measuring, phase error is little, data stabilization and can handheld portable measuring, and is fit to accurately to measure the rail surface voltage of 25Hz phase-sensitive track circuits and the phase angle difference duty with the monitoring phase-sensitive track circuits.
Claims (2)
1. 25Hz phase-sensitive track circuits meter, it is characterized in that, comprising: high input impedance buffering amplification module, isolation sampling module, signal amplitude adjusting module, low-pass filtering module, DSP digital collection processing module, memory module, LCD LCD MODULE, hummer and battery power management module; After described high input impedance buffering amplification module connects signal amplitude adjusting module, low-pass filtering module successively, be connected to an input end of DSP digital collection processing module; After described isolation sampling module connects signal amplitude adjusting module, low-pass filtering module successively, be connected to another input end of DSP digital collection processing module; Described DSP digital collection processing module output terminal is connected with memory module, LCD LCD MODULE and hummer; Described battery power management module is connected with DSP digital collection processing module, high input impedance buffering amplification module, signal amplitude adjusting module, low-pass filtering module, LCD LCD MODULE and memory module.
2. 25Hz phase-sensitive track circuits meter according to claim 1 is characterized in that, is provided with A/D conversion input circuit in the described DSP digital collection processing module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206173919U CN201909809U (en) | 2010-11-19 | 2010-11-19 | Measuring instrument for 25-Hz phase-sensitive track circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206173919U CN201909809U (en) | 2010-11-19 | 2010-11-19 | Measuring instrument for 25-Hz phase-sensitive track circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201909809U true CN201909809U (en) | 2011-07-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206173919U Expired - Fee Related CN201909809U (en) | 2010-11-19 | 2010-11-19 | Measuring instrument for 25-Hz phase-sensitive track circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201909809U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103334781A (en) * | 2013-06-08 | 2013-10-02 | 淮南矿业(集团)有限责任公司 | Monitoring system for potential safety hazard in methane gas exhausting and mining |
| CN103983913A (en) * | 2014-05-23 | 2014-08-13 | 中铁七局集团电务工程有限公司 | Portable simulation tester for 25HZ phase-sensitive track circuits |
| GB2512101A (en) * | 2013-03-20 | 2014-09-24 | Tube Lines Ltd | Loop break detection and repair |
| CN107607860A (en) * | 2017-10-30 | 2018-01-19 | 上海工程技术大学 | A kind of hand-held track circuit testing device and method |
| CN111751608A (en) * | 2020-06-24 | 2020-10-09 | 合肥工大高科信息科技股份有限公司 | Station phase-sensitive track signal detection device |
-
2010
- 2010-11-19 CN CN2010206173919U patent/CN201909809U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2512101A (en) * | 2013-03-20 | 2014-09-24 | Tube Lines Ltd | Loop break detection and repair |
| CN103334781A (en) * | 2013-06-08 | 2013-10-02 | 淮南矿业(集团)有限责任公司 | Monitoring system for potential safety hazard in methane gas exhausting and mining |
| CN103983913A (en) * | 2014-05-23 | 2014-08-13 | 中铁七局集团电务工程有限公司 | Portable simulation tester for 25HZ phase-sensitive track circuits |
| CN107607860A (en) * | 2017-10-30 | 2018-01-19 | 上海工程技术大学 | A kind of hand-held track circuit testing device and method |
| CN111751608A (en) * | 2020-06-24 | 2020-10-09 | 合肥工大高科信息科技股份有限公司 | Station phase-sensitive track signal detection device |
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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: 20110727 Termination date: 20131119 |