CN209215493U - A kind of railway signal measuring device - Google Patents
A kind of railway signal measuring device Download PDFInfo
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- CN209215493U CN209215493U CN201821780231.9U CN201821780231U CN209215493U CN 209215493 U CN209215493 U CN 209215493U CN 201821780231 U CN201821780231 U CN 201821780231U CN 209215493 U CN209215493 U CN 209215493U
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- signal measuring
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Abstract
The utility model provides a kind of railway signal measuring device, it includes controller MCU, analog quantity TCH test channel, switching value TCH test channel, wireless communication module and remote monitoring terminal；The analog quantity TCH test channel is connected with the controller MCU, for acquiring the analog signals of railway signals equipment in real time and being transmitted to the controller MCU；The switching value TCH test channel is connected with the controller MCU, for acquiring the on-off model of railway signals equipment in real time and being transmitted to the controller MCU；The remote monitoring terminal is connected, for being exported according to the analog signals and the on-off model and showing testing result with the controller MCU by the wireless communication module.The railway signal measuring device has the advantages that design science, practical, detection efficiency is high low with production cost.
Description
Technical field
The utility model relates to railway signals equipment monitoring technical fields, specifically, relate to a kind of railway signal survey
Measure device.
Background technique
Along with the development of high-speed railway and modern information technologies, railway signal centralized monitoring system has become newly-built iron
The standard configuration system on road, it has also become the important leverage of safe train operation.
But the investment of centralized signal supervision system is larger, and installation and debugging Comparision is cumbersome, can not cover telecommunication and signaling branch pipe
All signalling arrangements of linchpin, for some recessiveness, intermittent signalling arrangement failures, with general conventional instrument instrument and very
Hardly possible discovery and record, usually become the hidden danger of safe driving.
In order to solve the above problems, people are seeking always a kind of ideal technical solution.
Summary of the invention
The purpose of this utility model is in view of the deficiencies of the prior art, to provide a kind of design science, practical, inspection
Survey the high-efficient railway signal measuring device low with production cost.
To achieve the goals above, the technical scheme adopted by the utility model is a kind of railway signal measuring device, packet
Include controller MCU, analog quantity TCH test channel, switching value TCH test channel, wireless communication module and remote monitoring terminal；
The analog quantity TCH test channel is connected, for acquiring the simulation of railway signals equipment in real time with the controller MCU
Amount signal is simultaneously transmitted to the controller MCU；
The switching value TCH test channel is connected, for acquiring the switch of railway signals equipment in real time with the controller MCU
Amount signal is simultaneously transmitted to the controller MCU；
The remote monitoring terminal is connected by the wireless communication module with the controller MCU, for according to
Analog signals and the on-off model export and show testing result.
Based on above-mentioned, the analog quantity TCH test channel includes that safe sample circuit, the range being sequentially connected in series are cut automatically
Change circuit, signal amplification circuit, A/D conversion circuit and communication isolation circuit.
Based on above-mentioned, the safe sample circuit includes fuse wire FUSE1, fuse wire FUSE2, thermistor
PTC, resistance R1, resistance R2 and resistance R3；The fuse wire FUSE1, the thermistor PTC and the resistance R1 are successively
In succession, the fuse wire FUSE2 and the resistance R2 are sequentially connected in series, and the resistance R1 and the resistance R2 are simultaneously for series connection
It is associated in the both ends of the resistance R3.
Based on above-mentioned, the range automatic switching circuit uses multiple-channel electronic switches.
Based on above-mentioned, the switching value TCH test channel includes the switch quantity acquisition circuit being sequentially connected in series and number isolation
Circuit.
Based on above-mentioned, the wireless communication module is bluetooth module and WiFi module, and the remote monitoring terminal is industry
Three proofings flat board mobile phone.
Based on above-mentioned, the controller MCU is also connected with lithium battery mould group, NAND FLASH, SDRAM and LED light.
Based on above-mentioned, the controller MCU is also connected with USB interface, CAN interface and keystroke interface.
Based on above-mentioned, the controller MCU model STM32F429.
The utility model has substantive features and progress compared with the prior art, specifically:
1) the utility model provides a kind of railway signal measuring device, which, which is used as, believes railway
The strong supplement of number centralized monitoring system, easily can comprehensively survey an equipment item or a certain item electrical characteristic
Examination and record can collect various analog signals and on-off model in the design of standard monitoring system, to be equipment
Accident analysis provides more reference frames；
2) the railway signal measuring device realizes a kind of safe and reliable isolation sample circuit, is able to achieve in acquisition signal
No more than working normally in the environment of AC600V, while the sample circuit has automatic range switching, AD conversion and digital communication
Isolation features improve sample precision；
3) the railway signal measuring device can acquire the electric parameter of a variety of railway signals equipments, the monitoring content of terminal
Interface can be configured by channel to be adjusted, flexibility with higher；
In conclusion the utility model has design science, practical, detection efficiency high low with production cost excellent
Point.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model.
Fig. 2 is the schematic diagram of the safe sampling module of the utility model.
Specific embodiment
Below by specific embodiment, the technical solution of the utility model is described in further detail.
Embodiment 1
As shown in Figure 1 and Figure 2, a kind of railway signal measuring device, it includes that controller MCU, analog quantity test are logical
Road, switching value TCH test channel, wireless communication module and remote monitoring terminal；
The analog quantity TCH test channel is connected, for acquiring the simulation of railway signals equipment in real time with the controller MCU
Amount signal is simultaneously transmitted to the controller MCU；
The switching value TCH test channel is connected, for acquiring the switch of railway signals equipment in real time with the controller MCU
Amount signal is simultaneously transmitted to the controller MCU；
The remote monitoring terminal is connected by the wireless communication module with the controller MCU, for according to
Analog signals and the on-off model export and show testing result.
Refer in use, the remote monitoring terminal sends test to the controller MCU by the wireless communication module
It enables；The controller MCU controls the mould that the analog quantity TCH test channel acquires railway signals equipment in real time according to test instruction
Analog quantity signal controls the on-off model that the switching value TCH test channel acquires railway signals equipment in real time；The controller MCU
The analog signals and the on-off model are sent to the remote monitoring terminal, the remote monitoring terminal is to basis
The analog signals and the on-off model are stored, are exported and shown testing result.
This gives a kind of specific embodiment of wireless communication module, the wireless communication module is bluetooth mould
Block and WiFi module, the remote monitoring terminal are industrial three proofings flat board mobile phone, provide a user man-machine interactive interface.User can
By the APP in industrial three proofings flat board mobile phone, the test-types of analog quantity channel are set, test-types contain alternating voltage,
Alternating current, DC voltage, DC current, switch indication voltage, track 25Hz local voltage signal, 25Hz track receiving end are handed over
Flow voltage signal, 480 railway voltage signals, power supply panel 25Hz track receiving end ac voltage signal, ZPW2000 shift frequency voltage letter
Number.
Specifically, the controller MCU model STM32F429.The railway signal measuring device, which uses, is based on Cortex-
The STM32F429 of M4 kernel can reach 180MHz as MCU, dominant frequency, has FPU unit and DSP instruction set, is very suitable to need
The application of floating-point operation or DSP processing.STM32F429 possesses the in-chip FLASH of the up to on-chip SRAM of 256KB and 2M, branch
Hold SDRAM and NAND Flash, band TFTLCD controller, band graphics accelerator (Chorme ART), band utilizing camera interface
(DCMI), encryption processor (CRYP), USB high speed OTG, real random number generator, OTP memory etc..
For the railway signal measuring device as the strong supplement to railway signal centralized monitoring system, it can be easily right
One equipment item or a certain item electrical characteristic are comprehensively tested and are recorded, such as to track circuit, power supply panel, electronic turn-out track
The monitoring of the signalling arrangements such as machine, semaphore, to provide more foundations for equipment fault analysis.
Embodiment 2
The present embodiment the difference from embodiment 1 is that: the analog quantity TCH test channel includes the safety being sequentially connected in series
Sample circuit, range automatic switching circuit, signal amplification circuit, A/D conversion circuit and communication isolation circuit.
This gives a kind of specific embodiment of safe sample circuit, the safe sample circuit includes fusing
Fuse FUSE1, fuse wire FUSE2, thermistor PTC, resistance R1, resistance R2 and resistance R3；The fuse wire
FUSE1, the thermistor PTC and the resistance R1 are sequentially connected in series in succession, the fuse wire FUSE2 and the resistance R2
It is sequentially connected in series, the resistance R1 and the resistance R2 are connected in parallel on the both ends of the resistance R3.Fuse wire FUSE can be in electric current
It is instanteously blown when greater than 200mA, anti-stop signal inputs height terminal shortcircuit；Pressure divider circuit seals in thermistor PTC and is protected,
Input end loop plays a role when being greater than 20mA, and resistance value is become greater to a few Europe M until itself burning in tens to several hundred milliseconds
Open circuit；Resistance R1, resistance R2 and resistance R3 use the Europe 1M, the oxidized metal film resistance of 2W, and strong voltage is inputted through high-resistance current-limiting
Afterwards, rear end is with weak voltage signal (millivolt level signal) sampling；The safe sample circuit is provided with fuse wire FUSE, temperature-sensitive
Resistance and the triple isolating means of current-limiting resistance are able to achieve and work normally in the environment of acquiring signal no more than AC600V.
The railway signal measuring device includes comprising 2 tunnel analog quantity TCH test channels and 4 way switch amount TCH test channels.
Specifically, the range automatic switching circuit using multiple-channel electronic switches control, multiple-channel electronic switches it is every
There is a switch, whether the switch in each channel is closed the GPIO level control by the controller MCU in one channel.Range is certainly
In dynamic switching circuit, series connection accesses 1 resistance in each channel of multiple-channel electronic switches, and the resistance accessed in each channel is simultaneously
By controlling the closure of each channel electron switch the parallel resistance resistance value of different stalls can be obtained, which is to believe in connection relationship
Amplification resistance in number amplifying circuit.By the control to amplification resistance, it can be achieved that measured signal range from
Dynamic switching, thus the maximum value for inputting amplified signal close to A/D as far as possible, to obtain the maximum resolution of A/D conversion.Institute
It states communication isolation circuit and the safeguard measures such as (transient voltage suppressor) and linear optical coupling is managed using TVS, prevent because being rushed by high pressure
It hits and destroys in the measuring circuit of rear class, improve module high-voltage resistance capability.
The railway signal measuring device completes the measurement to analog signals by the analog quantity TCH test channel, and passes through
SPI interface will obtain corresponding analog signals and be transmitted to the controller MCU.Analog signals are passing through the communication isolating
A/D conversion has been carried out before circuit, avoids and linear isolation directly is carried out to analog signal, improve the precision of AD conversion.
Embodiment 3
The present embodiment the difference from embodiment 1 is that: the switching value TCH test channel includes the switch being sequentially connected in series
Measure Acquisition Circuit and digital isolation circuit.The switch quantity acquisition circuit includes the rectifier diode being sequentially connected in series, pressure stabilizing
Diode and current-limiting resistance are defined and are sampled using all having high-resistance characteristic before zener diode breakdown reverse voltage
The minimum voltage of switching value, it is therefore prevented that accidentally sampled as caused by interference signal, improve the accurate of switching value TCH test channel sampling
Property；The number isolation circuit realizes isolation using high speed photo coupling, and conversion rate reaches as high as 10MBit/s, input/output terminal every
Ionization voltage is up to 2500V.
Embodiment 4
The present embodiment the difference from embodiment 1 is that: the controller MCU is also connected with lithium battery mould group, NAND
FLASH, SDRAM, LED light, USB interface, CAN interface and keystroke interface.
The power supply of the railway signal measuring device is provided by lithium battery mould group, passes through the railway signal measuring device circuit board
On power isolation module and power conversion module, the power supply after conversion is supplied respectively to controller MCU, memory module, wireless
Transmission module, analog quantity TCH test channel and switching value TCH test channel use；Lithium battery mould group under full state for device not
Intermitten service is greater than 72 hours, meets the power demand of terminal.
The NAND FLASH can make a backup store the analog signals and the on-off model.
The railway signal measuring device externally provides CAN interface and USB interface, to realize the export of storing data；Together
When terminal externally provide photoelectricity instruction function, can by the transmitting and receiving state of the operating status of MCU, bluetooth or WiFi, lithium electricity
The power supply state of Chi Mo group is externally shown.
Finally it should be noted that: above embodiments are only to illustrate the technical solution of the utility model rather than limit it
System；Although the utility model has been described in detail with reference to the preferred embodiment, those of ordinary skill in the art should
Understand: specific implementation of the utility model can still be modified or is equally replaced to some technical characteristics
It changes；Without departing from the spirit of technical solutions of the utility model, should all cover in the claimed technical solution of the utility model
In range.
Claims (9)
1. a kind of railway signal measuring device, it is characterised in that: including controller MCU, analog quantity TCH test channel, switching value test
Channel, wireless communication module and remote monitoring terminal；
The analog quantity TCH test channel is connected with the controller MCU, and the analog quantity for acquiring railway signals equipment in real time is believed
Number and be transmitted to the controller MCU；
The switching value TCH test channel is connected with the controller MCU, and the switching value for acquiring railway signals equipment in real time is believed
Number and be transmitted to the controller MCU；
The remote monitoring terminal is connected by the wireless communication module with the controller MCU, for according to the simulation
Amount signal and the on-off model export and show testing result.
2. railway signal measuring device according to claim 1, it is characterised in that: the analog quantity TCH test channel include according to
Safe sample circuit, range automatic switching circuit, signal amplification circuit, A/D conversion circuit and the communication isolating of secondary series connection
Circuit.
3. railway signal measuring device according to claim 2, it is characterised in that: the safe sample circuit includes fusing
Fuse FUSE1, fuse wire FUSE2, thermistor PTC, resistance R1, resistance R2 and resistance R3；The fuse wire
FUSE1, the thermistor PTC and the resistance R1 are sequentially connected in series in succession, the fuse wire FUSE2 and the resistance R2
It is sequentially connected in series, the resistance R1 and the resistance R2 are connected in parallel on the both ends of the resistance R3.
4. railway signal measuring device according to claim 2, it is characterised in that: the range automatic switching circuit uses
Multiple-channel electronic switches.
5. railway signal measuring device according to claim 1, it is characterised in that: the switching value TCH test channel include according to
The switch quantity acquisition circuit of secondary series connection and digital isolation circuit.
6. railway signal measuring device according to claim 1, it is characterised in that: the wireless communication module is bluetooth mould
Block and WiFi module, the remote monitoring terminal are industrial three proofings flat board mobile phone.
7. railway signal measuring device according to claim 1, it is characterised in that: the controller MCU is also connected with lithium
Battery modules, NAND FLASH, SDRAM and LED light.
8. railway signal measuring device according to claim 1, it is characterised in that: the controller MCU is also connected with USB
Interface, CAN interface and keystroke interface.
9. railway signal measuring device according to claim 1-8, it is characterised in that: the controller MCU type
Number be STM32F429.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821780231.9U CN209215493U (en) | 2018-10-31 | 2018-10-31 | A kind of railway signal measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821780231.9U CN209215493U (en) | 2018-10-31 | 2018-10-31 | A kind of railway signal measuring device |
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| Publication Number | Publication Date |
|---|---|
| CN209215493U true CN209215493U (en) | 2019-08-06 |
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ID=67457751
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| CN201821780231.9U Active CN209215493U (en) | 2018-10-31 | 2018-10-31 | A kind of railway signal measuring device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111856278A (en) * | 2020-08-05 | 2020-10-30 | 贵州电网有限责任公司 | Multichannel multi-range frequency response test signal acquisition device and acquisition method |
| CN112234590A (en) * | 2020-10-10 | 2021-01-15 | 绵阳市维博电子有限责任公司 | Switch point machine action voltage detection device and PCB (printed circuit board) distribution mode thereof |
| CN114295918A (en) * | 2021-12-31 | 2022-04-08 | 国能朔黄铁路发展有限责任公司 | Measuring system for railway signal equipment |
-
2018
- 2018-10-31 CN CN201821780231.9U patent/CN209215493U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111856278A (en) * | 2020-08-05 | 2020-10-30 | 贵州电网有限责任公司 | Multichannel multi-range frequency response test signal acquisition device and acquisition method |
| CN112234590A (en) * | 2020-10-10 | 2021-01-15 | 绵阳市维博电子有限责任公司 | Switch point machine action voltage detection device and PCB (printed circuit board) distribution mode thereof |
| CN114295918A (en) * | 2021-12-31 | 2022-04-08 | 国能朔黄铁路发展有限责任公司 | Measuring system for railway signal equipment |
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