CN207440249U - A kind of hand-held track circuit testing device - Google Patents
A kind of hand-held track circuit testing device Download PDFInfo
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- CN207440249U CN207440249U CN201721417857.9U CN201721417857U CN207440249U CN 207440249 U CN207440249 U CN 207440249U CN 201721417857 U CN201721417857 U CN 201721417857U CN 207440249 U CN207440249 U CN 207440249U
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- track
- signal
- circuit
- track circuit
- processor
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Abstract
The utility model is related to a kind of hand-held track circuit testing devices, the device includes obtaining with decoded test decoder box (1) for track circuit measuring signal and for showing the handheld terminal of measurement result (2), the test decoder box (1) passes through wireless module (3) the connection handheld terminal (2), the test decoder box (1) includes 1 railway digital track-circuit signalling acquiring unit, 2 road 50Hz phase-sensitive track circuits signal acquiring units and for being decoded to obtain corresponding voltage to track-circuit signalling, electric current, the processor of frequency and coding information (12), the Digital Track Circuit signal acquiring unit and 50Hz phase-sensitive track circuits signal acquiring units output terminal are connected to the processor (12) by A/D converter (11).Compared with prior art, the utility model energy a tractor serves several purposes, it is convenient and reliable.
Description
Technical field
The utility model is related to a kind of circuit test device, more particularly, to a kind of hand-held track circuit testing device.
Background technology
At present, the track circuit applied in Shanghai Underground is mainly with public affairs such as US＆S companies of the U.S., GRS companies, logical number groups
Based on the Digital Track Circuit of department, while further include 50Hz phase-sensitive track circuits.Track circuit failure is to falling note Influence to operation very
Greatly, but to it test and safeguard that the country is still supported without more ripe, perfect special test and maintained equipment at present, mainly still
It itemizes and carries out by instruments such as oscillograph, universal meter, ammeters, then comprehensive analysis measurement data, judge track circuit whether just
Often work.Therefore, it is cumbersome, it is inconvenient to carry, it is higher to the skill set requirements of maintenance personnel, considerably increase track circuit maintenance
Workload and maintenance difficulties.The country still can be in the track circuits such as decoding speed code without a track circuit testing equipment at present
The associated test devices of portion's coding information.Track traffic development situation is complied with, is identified the market's trend, research and development are easy to operate, are convenient for
Carrying meets that our company opens and engineering electricity business maintenance personnel detects the whether normal Digital Track Circuit of track circuit and surveys
Instrument is tried with regard to necessary.
Utility model content
The purpose of this utility model is exactly to provide a kind of hand-held rail to overcome the problems of the above-mentioned prior art
Road circuit test device.
The purpose of this utility model can be achieved through the following technical solutions：
A kind of hand-held track circuit testing device, the device include for track circuit measuring signal obtain and it is decoded
Decoder box and the handheld terminal for showing measurement result are tested, described in the test decoder box is connected by wireless module
Handheld terminal, the test decoder box includes 1 railway digital track-circuit signalling acquiring unit, 2 road 50Hz phase-sensitive tracks electricity
Road signal acquiring unit and believe for being decoded to obtain corresponding voltage, electric current, frequency and coding to track-circuit signalling
The processor of breath, the Digital Track Circuit signal acquiring unit and 50Hz phase-sensitive track circuits signal acquiring unit output terminals
The processor is connected to by A/D converter.
The Digital Track Circuit signal acquiring unit includes obtaining Digital Track Circuit signal to be detected
First signal acquisition circuit and the bandpass filter for signal filtering, first signal acquisition circuit and bandpass filtering
Device is sequentially connected, and bandpass filter output terminal is connected to processor by A/D converter.
The 50Hz phase-sensitive track circuits signal measurement unit includes obtaining 50Hz phase-sensitive tracks electricity to be detected
The secondary signal of road signal obtains circuit and the low-pass filter for signal filtering, the secondary signal obtain circuit and
Low-pass filter is sequentially connected, and first low pass filter output is connected to processor by A/D converter.
The Digital Track Circuit signal acquiring unit and 50Hz phase-sensitive track circuits signal acquiring units further includes certainly
Dynamic span-changing device, the auto-shifted measurement device connection processor, when measuring different size of signal, processing
Device control auto-shifted measurement device is converted to different gears.
The wireless module includes bluetooth module.
The handheld terminal is equipped with the audible-visual annunciator alarmed when measurement result transfinites.
The processor is dsp processor.
Compared with prior art, the utility model has the following advantages that：
(1) the utility model sets Digital Track Circuit signal acquiring unit and 50Hz phase-sensitive track circuits signals to obtain simultaneously
Unit is taken, different track circuits can be detected, intercept out by the coherent signal in track circuit when being detected
And pass through processor and be decoded analysis, it carries out obtaining the different data such as voltage, electric current, frequency, coding information, set simultaneously
2 road 50Hz phase-sensitive track circuits signal acquiring units, wherein 1 tunnel can connect 50Hz phase-sensitive track circuits track power supply signals, another 1
Road can connect locally supplied power source's signal in 50Hz phase-sensitive track circuits, pass through 2 road 50Hz phase-sensitive track circuits signal acquiring units
Measurement result can obtain the error angle of track power supply and locally supplied power source, realize a tractor serves several purposes, it is convenient and reliable；
(2) bandpass filter, 50Hz phase-sensitive tracks electricity are set in the utility model Digital Track Circuit signal acquiring unit
Road signal acquiring unit sets low-pass filter, so as to be filtered to the track-circuit signalling of acquisition so that subsequent processor
Handling result is more accurately and reliably；
(3) the utility model test decoder box is attached with handheld terminal by wireless module (such as bluetooth), during test,
Test decoder box is connected with track circuit to be tested, and tester can obtain measurement knot nearby by handheld terminal
Fruit, it is easy to operate；
(4) the utility model sets audible-visual annunciator that can obtain failure at the first time and handled.
Description of the drawings
Fig. 1 is the structural schematic block diagram of the utility model hand-held track circuit testing device；
Fig. 2 is the concrete composition structural frames of the test decoder box in the utility model hand-held track circuit testing device
Figure.
0 is track circuit in figure, and 1 is test decoder box, and 2 be handheld terminal, and 3 be wireless module, and 01 is digital track electricity
Road, 02 is 50Hz phase-sensitive track circuits, and 11 be A/D converter, and 12 be processor, and 13 be the first signal acquisition circuit, and 14 be band
Bandpass filter, 15 obtain circuit for secondary signal, and 16 be low-pass filter, and 17 be auto-shifted measurement device, and 18 be power management
Unit.
Specific embodiment
The utility model is described in detail in the following with reference to the drawings and specific embodiments.
Embodiment
As illustrated in fig. 1 and 2, a kind of hand-held track circuit testing device is obtained including being used for 0 measuring signal of track circuit
Handheld terminal 2 with decoded test decoder box 1 and for showing measurement result.Track circuit is included for Digital Track Circuit
01 and 50Hz phase-sensitive track circuits 02.
It tests decoder box 1 and handheld terminal 2 is connected by wireless module 3, wireless module 3 includes bluetooth module, test decoding
Box 1 include 1 railway digital track-circuit signalling acquiring unit, 2 road 50Hz phase-sensitive track circuits signal acquiring units and for pair
Track-circuit signalling is decoded to obtain the processor 12 of corresponding voltage, electric current, frequency and coding information, Digital Track Circuit
Signal acquiring unit and 50Hz phase-sensitive track circuits signal acquiring unit output terminals are connected to processor by A/D converter 11
12, processor 12 is dsp processor.
Digital Track Circuit signal acquiring unit includes obtaining the first letter of Digital Track Circuit signal to be detected
Number obtain circuit 13 and the bandpass filter 14 for signal filtering, the first signal acquisition circuit 13 and bandpass filter 14 according to
Secondary connection, 14 output terminal of bandpass filter are connected to processor 12 by A/D converter 11.Bandpass filter 14, design parameter
Design is as follows：
Sample frequency (Fs)：68000；
The parameter of the lower intermediate zone of bandpass filter 14：Fstop1=8kHz；Fpass1=9KHz；
The parameter of the upper intermediate zone of bandpass filter 14：Fstop2=18kHz；Fpass2=17kHz；
Passband ripple is no more than 0.2dB, and stopband attenuation is not less than 60dB.
50Hz phase-sensitive track circuits signal measurement unit includes obtaining 50Hz phase-sensitive track circuits signals to be detected
Secondary signal obtain circuit 15 and the low-pass filter 16 for signal filtering, secondary signal obtains circuit 15 and low pass filtered
Ripple device 16 is sequentially connected, and 16 output terminal of low-pass filter is connected to processor 12 by A/D converter 11.Low-pass filter 16,
Design parameter design is as follows：
Sample rate (Fs)：1000；
The intermediate zone parameter of low-pass filter 16：Fstop=100Hz；Fpass=50Hz；
Passband ripple is no more than 0.01dB, and stopband attenuation is not less than 60dB.
It is existing voltage waveform admission circuit that above-mentioned first signal acquisition circuit 13 and secondary signal, which obtain circuit 15,
For obtaining the voltage waveform of collection point, the voltage waveform of acquisition is after bandpass filter 14 or low-pass filter 16 are filtered
Processor 12 is sent to, processor 12 analyzes voltage waveform.
Digital Track Circuit signal acquiring unit and 50Hz phase-sensitive track circuits signal acquiring units further include automatic range
Converter 17,17 connection processing device 12 of auto-shifted measurement device, when measuring different size of signal, processor 12 controls automatically
Span-changing device 17 is converted to different gears.Auto-shifted measurement device 17 includes 3 grades, is 2.5V grades, 25V grades and 200V respectively
Shelves.
Handheld terminal 2 is equipped with the audible-visual annunciator alarmed when measurement result transfinites.
Processor 12 is connected with Power Management Unit 18, and Power Management Unit 18 controls the charging of lithium electricity and boosting is output to
5V, 5V are reconverted into 3.3V, 1.2V and are used for system.By Power Management Unit 18 or processor 12 detection by key pressing when
Between length, it can be achieved that automatic stand-by and the shutdown of equipment, achieve the effect that power saving.
The AD7934-6 chips that A/D converter 11 is powered using 4 passages, 12 parallel-by-bits, high speed single supply.1 railway digital rail
Road circuit signal acquiring unit and 2 road 50Hz phase-sensitive track circuits signal acquiring units enter A/ after getting track-circuit signalling
113 input channels of D converters.4th road A/D ALT-CH alternate channels detect for battery capacity.
Dsp processor selects ADSP-21479, controls A/D transfer processes, the data of A/D samplings is read by parallel port, together
Shi Jinhang software filterings, power frequency component track power detecting, locally supplied power source's voltage, size of current detection and track power supply, part
The detection of power phase difference, the decoding of Digital Track Circuit fsk signal.It is connected between dsp processor and bluetooth module by UART port,
The control instruction of handheld terminal 2 is received by bluetooth module and passes to dsp processor, and the decoding data of dsp processor is by bluetooth
Module is transmitted to handheld terminal 2.
The operation principle of the utility model hand-held track circuit testing device is as follows：
When needing to test signal voltage, the frequency size of Digital Track Circuit 01 or 50Hz phase-sensitive track circuits 02,
The table stick of Digital Track Circuit signal acquiring unit or 50Hz phase-sensitive track circuits signal acquiring units is connected to corresponding track electricity
In the test point on road, the voltage signal received is gathered；When needing to test Digital Track Circuit or 50Hz phase-sensitive track circuits
During signal code size, current clamp pincers on track stick line, the voltage signal of acquisition current clamp output.
The track-circuit signalling collected is filtered, A/D sampling, with DSP signal processors 12 to sampled data into
Row algorithm process decodes voltage, electric current, frequency and the coding information of track-circuit signalling, is sent by bluetooth module to hand-held
Terminal 2 carries out data Decoding Analysis again, and voltage, the electricity of current orbit circuit signal are finally shown in hand-held terminal
Stream, frequency and coding information, and decide whether to alarm according to pre-set parameter.Tester can be according to the signal ginseng measured
Number judges the circuit condition of the track circuit.
The also measurable 50Hz phase-sensitive track circuits track power supply of the utility model hand-held track circuit testing device and office
The error angle of portion's power supply, 02 track power supply signal of 50Hz phase-sensitive track circuits are used as and input all the way, 50Hz phase-sensitive track circuits 02
Locally supplied power source's signal is separately input into 2 road 50Hz phase-sensitive track circuits signal acquiring units, 2 road 50Hz phases as inputting all the way
Quick track-circuit signalling acquiring unit obtains the voltage signal of corresponding test point respectively, and voltage waveform is extracted, and then
To processor 12, processor 12 is completed for input after A/D converter 11 is converted after low-pass filter 16 filters out noise
Phase difference detection.Phase difference detection is mainly the phase difference calculated between two power frequency components.Relevant function method can be to sine
The phase information of signal is demodulated.Relevant treatment is carried out to two sinusoidal signals with frequency, utilizes the correlation of sinusoidal signal
Obtain the phase difference of detected signal.In addition there is the phase difference calculating based on FFT computings.The advantages of both of which has oneself
And restrictive condition when using, wherein related algorithm efficiency is higher, and algorithm complexity is small, but related algorithm requirement must be removed from letter
Flip-flop in number, and the length of signal must include one or more complete signal periods；Phase based on FFT computings
As long as the condition that potential difference computational algorithm meets FFT computings can be to signal without special requirement, but to carry out FFT computings, algorithm
Complexity is higher.A kind of suitable algorithm is selected after being separately verified to both approaches.
Claims (7)
1. a kind of hand-held track circuit testing device, which is characterized in that the device includes obtaining for track circuit measuring signal
It takes with decoded test decoder box (1) and for showing the handheld terminal of measurement result (2), the test decoder box (1)
By wireless module (3) the connection handheld terminal (2), the test decoder box (1) is believed including 1 railway digital track circuit
Number acquiring unit, 2 road 50Hz phase-sensitive track circuits signal acquiring units and for being decoded to obtain to track-circuit signalling
Corresponding voltage, electric current, the processor (12) of frequency and coding information, the Digital Track Circuit signal acquiring unit and
50Hz phase-sensitive track circuits signal acquiring units output terminal is connected to the processor (12) by A/D converter (11).
A kind of 2. hand-held track circuit testing device according to claim 1, which is characterized in that the digital track
Circuit signal acquiring unit include for obtain the first signal acquisition circuit (13) of Digital Track Circuit signal to be detected with
And the bandpass filter (14) for signal filtering, first signal acquisition circuit (13) and bandpass filter (14) are successively
Connection, bandpass filter (14) output terminal are connected to processor (12) by A/D converter (11).
A kind of 3. hand-held track circuit testing device according to claim 1, which is characterized in that the 50Hz phase sensitivities
The secondary signal that track-circuit signalling measuring unit includes obtaining 50Hz phase-sensitive track circuits signals to be detected obtains electricity
Road (15) and the low-pass filter (16) for signal filtering, the secondary signal obtain circuit (15) and low-pass filter
(16) it is sequentially connected, low-pass filter (16) output terminal is connected to processor (12) by A/D converter (11).
A kind of 4. hand-held track circuit testing device according to claim 1, which is characterized in that the digital track
Circuit signal acquiring unit and 50Hz phase-sensitive track circuits signal acquiring units further include auto-shifted measurement device (17), described
Auto-shifted measurement device (17) the connection processor (12), when measuring different size of signal, processor (12) control
Auto-shifted measurement device (17) is converted to different gears.
A kind of 5. hand-held track circuit testing device according to claim 1, which is characterized in that the wireless module
(3) bluetooth module is included.
A kind of 6. hand-held track circuit testing device according to claim 1, which is characterized in that the handheld terminal
(2) it is equipped with the audible-visual annunciator alarmed when measurement result transfinites.
A kind of 7. hand-held track circuit testing device according to claim 1, which is characterized in that the processor
(12) it is dsp processor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721417857.9U CN207440249U (en) | 2017-10-30 | 2017-10-30 | A kind of hand-held track circuit testing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721417857.9U CN207440249U (en) | 2017-10-30 | 2017-10-30 | A kind of hand-held track circuit testing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207440249U true CN207440249U (en) | 2018-06-01 |
Family
ID=62290335
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721417857.9U Expired - Fee Related CN207440249U (en) | 2017-10-30 | 2017-10-30 | A kind of hand-held track circuit testing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207440249U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN110187173A (en) * | 2019-06-26 | 2019-08-30 | 哈尔滨市科佳通用机电股份有限公司 | Track-circuit signalling quality detection device |
-
2017
- 2017-10-30 CN CN201721417857.9U patent/CN207440249U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN110187173A (en) * | 2019-06-26 | 2019-08-30 | 哈尔滨市科佳通用机电股份有限公司 | Track-circuit signalling quality detection device |
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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: 20180601 Termination date: 20181030 |