CN211293088U - Portable railway signal monitoring and diagnosing device - Google Patents
Portable railway signal monitoring and diagnosing device Download PDFInfo
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- CN211293088U CN211293088U CN201921215663.XU CN201921215663U CN211293088U CN 211293088 U CN211293088 U CN 211293088U CN 201921215663 U CN201921215663 U CN 201921215663U CN 211293088 U CN211293088 U CN 211293088U
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Abstract
The utility model relates to a portable railway signal monitoring and diagnosing device, which comprises a power module, an alternating current transformer, a direct current transformer, an analog quantity and switching value acquisition board, a communication conversion control module and a controller provided with a monitoring station machine module; the alternating current transformer and the direct current transformer are connected with the input ends of the analog quantity and switching value acquisition boards; the analog quantity and switching value acquisition board is connected with the communication conversion control module; and the communication conversion control module is connected with the controller. Compared with the prior art, the utility model has the advantages of processing time is short, the integrated level is high and efficient.
Description
Technical Field
The utility model relates to a detection device of railway signal especially relates to a portable railway signal monitoring and diagnosing device.
Background
At present, a railway signal microcomputer monitoring system is widely applied, and the microcomputer system can collect various analog quantity signals and switching value signals of a track circuit, analyze the collected data and provide important support for electric service maintenance personnel to master the running state of equipment and analyze and process the faults of the equipment. Then, the existing microcomputer monitoring system mainly collects the analog quantity and the switching value of voltage or current, and cannot collect the frequency shift signals with insulation and the frequency shift signals without insulation.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a portable railway signal monitoring and diagnosing device for overcoming the defects of the prior art.
The purpose of the utility model can be realized through the following technical scheme:
a portable railway signal monitoring and diagnosing device comprises a power module, an alternating current transformer, a direct current transformer, an analog quantity and switching value acquisition board, a communication conversion control module and a controller provided with a monitoring station machine module; the alternating current transformer and the direct current transformer are connected with the input ends of the analog quantity and switching value acquisition boards; the analog quantity and switching value acquisition board is connected with the communication conversion control module; and the communication conversion control module is connected with the controller.
Preferably, the communication conversion control module is connected with the analog quantity and switching value acquisition board through a CAN bus; the communication conversion control module is connected with the controller through an RJ45 interface and a network cable.
Preferably, the analog quantity and switching value acquisition board comprises a fuse, a pre-attenuation protection unit, a buffer amplification unit, an AD conversion chip, a digital isolator, an anti-reverse current limiting circuit, an optical coupling isolator, a CPU processor, a CPLD logic controller, a power supply voltage stabilization unit and an external FLASH chip;
the voltage analog input interface is sequentially connected with the pre-attenuation protection unit, the buffer amplification unit, the AD conversion chip and the digital isolator; the switching value signal input interface is sequentially connected with an anti-reverse current limiting circuit and an optical coupling isolator; the output ends of the digital isolator and the optical coupling isolator are respectively connected with the input end of the CPLD logic controller, and the output end of the CPLD logic controller is connected with the CPU processor.
Preferably, the AD conversion chip adopts a 12-bit two-channel successive approximation type a/D converter.
Preferably, the CPU processor is provided with an external SDRAM space.
Preferably, the communication conversion control module is provided with an RS232 configuration interface.
Compared with the prior art, the utility model has the advantages of it is following:
firstly, the processing time is short: the utility model provides a monitoring and diagnosing device has adopted high performance CPU treater and CPLD logic controller, the effectual processing speed who accelerates data has shortened the processing time greatly.
Secondly, the integration level is high: the utility model provides a monitoring and diagnosing device can gather voltage or electric power analog quantity, switching value signal and insulating frequency shift signal, and the device volume is light and handy, convenient to carry, and the integrated level is high.
Thirdly, the efficiency is high: the utility model provides a monitoring and diagnosing device can save measured data, and the coverage of test point is higher, has improved efficiency of software testing greatly.
Drawings
Fig. 1 is a schematic structural diagram of a monitoring and diagnosing apparatus according to the present invention;
fig. 2 is a schematic diagram of the middle analog quantity and switching value collecting board of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, of the embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts shall fall within the protection scope of the present invention.
Example (b):
the utility model discloses the diagnostic apparatus is to 4 way 50Hz alternating voltage/electric current, 4 way direct current voltage/electric current, 4 way shift frequency send 450 and become frequently 950Hz have insulating frequency shift (carrier) signal and 4 way frequency shifts send 1700 and become frequently (carrier) signal of 2600Hz non-insulation frequency shift (carrier) to gather the calculation to can gather 8 way switching value signals. The diagnostic apparatus comprises an analog quantity/switching value acquisition board, a communication conversion control module, a power supply module, an alternating current transformer, a direct current transformer and monitoring station machine software.
As shown in FIG. 1, the analog quantity and switching value collecting board CAN perform isolated collection (CAN output 12VDC voltage to the switching value collecting end, and CAN directly collect external 12/24V switching value voltage) on 4 paths of 0-300V/50 Hz analog quantity, 4 paths of 0-30V analog quantity, 4 paths of 0-100A analog quantity, 4 paths of 0-50A analog quantity, 4 paths of frequency shift transmitting 450-950 Hz/voltage 0-300V/current 0-5A with insulation frequency shift (carrier) signals, 4 paths of frequency shift transmitting 1700-2600 Hz/voltage 0-300V/current 0-5A without insulation frequency shift (carrier) signals, and 8 paths of switching value signals, and CAN output the measurement signals to the communication conversion control module through the CAN bus.
The communication conversion control module is responsible for receiving signals of the analog quantity and switching quantity acquisition board through the CAN bus, converting the signals into network signals and transmitting the network signals to the monitoring station machine module on the controller, and the communication conversion control module is provided with an RS232 configuration interface and is used for configuring network IP addresses, MAC addresses, subnet masks, ports, gateways, correction coefficients and the like of the diagnostic apparatus/the upper computer.
The power supply voltage stabilizing module converts the input alternating current 220VAC/50HZ commercial power into 12V direct current voltage for output and provides working power supply for each circuit module.
The current input needs to adopt two accessory inputs, one is an alternating current transformer with the specification of 100A/50mA, the input 100A large current is converted into a small current signal and isolated, the other is a direct current acquisition accessory with the specification of 50A/20mA and the rated input current of 50A. Both accessories are connected with 4 current acquisition terminals of the analog quantity acquisition board and the switching quantity acquisition board.
The monitoring station machine module runs on the controller, is connected with the communication conversion control module through a 10M/100Mbps self-adaptive network port of the RJ45, and can check real-time values, real-time curves and historical curves of analog quantity and switching quantity, and perform data storage, data export, online upgrade and the like.
As shown in FIG. 2, the analog quantity and switching value acquisition board adopts a DSP + CPLD structure, adopts a high-performance DSP processor (digital signal processor), has an on-chip memory of 148KBytes, and a memory controller can be seamlessly connected with an SDRAM, an SRAM, a Flash and a ROM to realize a flexible memory guide mode, can select a program storage space which is imported from an SPI or an external memory and reaches 16 Mbytes to the maximum and an external SDRAM space of 8 Mbytes, can provide effective and rapid calculation of complex signals such as 8 paths of frequency shift signals and the like, and provides enough margin for the expansion and upgrade of monitoring products.
The output adopts a CAN bus, the CAN address CAN be set through dialing, and the address and function setting information CAN be displayed through an LED nixie tube.
The voltage input and the fuse meet the safety requirement, and the current-limiting resistor adopts a specified metal film resistor, so that the resistance value can be increased when overload fails and is guided to the safety side; the digital isolator which adopts the magnetic isolation technology among the input, the output and different inputs has excellent performance characteristics superior to those of substitution devices such as an optical coupler and the like, and can provide higher voltage-withstanding requirements.
8 input ports are provided with 8 small modules to complete the functions of isolation conditioning, filtering, proportion amplification and the like of voltage signals. The input and output, and the different inputs adopt the multi-channel digital isolator of magnetic isolation technology. The input signal is subjected to pre-attenuation amplification and then to buffering amplification to enter AD conversion. The A/D conversion chip adopts a 12-bit double-channel successive approximation type A/D converter to ensure the acquisition precision and the acquisition speed during the full-range automatic switching of the voltage. The CPU calculates and converts various types of signals input by the A/D conversion and outputs the signals to the communication conversion module through the CAN bus, and the communication conversion module CAN also set and control the acquisition board through the CAN bus.
Designing 8 paths of switching value input, wherein the switching value can realize the general use of 12V and 24V voltages, and enters the light coupling isolator after anti-reverse current limiting and then enters the CPLD logic chip; and the CPLD sends the switching value signal to the DSP for processing through an external bus of the DSP. The main program is stored in an external FLASH chip, the acquisition board CAN realize online upgrade through a CAN communication port, and network online upgrade is realized through a communication conversion module.
The monitoring station machine module adopts CSM-TD centralized monitoring station machine terminal, has the function of real-time value display, the amplitude of 4 paths of alternating current/direct current voltage, the amplitude of 4 paths of alternating current/direct current, 8 paths of switching value level, 4 paths of main frequency setting/amplitude value/upper frequency/lower frequency/central frequency/low frequency of insulation frequency shift voltage, 4 paths of main frequency setting/amplitude value/upper frequency/lower frequency/central frequency/low frequency of insulation frequency shift current, 4 paths of main frequency setting/amplitude value/upper frequency/lower frequency/central frequency/low frequency of non-insulation frequency shift voltage and 4 paths of main frequency setting/amplitude value/upper frequency/lower frequency/central frequency/low frequency of non-insulation frequency shift current are displayed in real time.
The monitoring station machine module has a real-time curve function and displays 4 paths of alternating current/direct current voltage amplitudes, 4 paths of alternating current/direct current amplitudes, 8 paths of switching value levels, 4 paths of main frequency setting/amplitude magnitude/upper frequency/lower frequency/central frequency/low frequency of the insulation frequency shift voltage, 4 paths of main frequency setting/amplitude magnitude/upper frequency/lower frequency/low frequency of the insulation frequency shift current, 4 paths of main frequency setting/amplitude magnitude/upper frequency/lower frequency/central frequency/low frequency of the insulation frequency shift voltage and 4 paths of main frequency setting/amplitude magnitude/upper frequency/lower frequency/central frequency/low frequency of the insulation frequency shift current in real time.
The monitoring station machine module tests that an insulation frequency shift signal exists, and 8 paths of main frequency signals of 550/650/750/850Hz can be configured to be acquired respectively.
The monitoring station machine module tests non-insulation frequency shift signals, and 8 paths of main frequency signals with 1700/2000/2300/2600Hz frequency can be configured to be respectively collected.
The monitoring station machine module has a data storage function, can automatically and continuously store measurement data for 48 hours, and simultaneously has a data emptying function.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily think of various equivalent modifications or replacements within the technical scope of the present invention, and these modifications or replacements should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (6)
1. A portable railway signal monitoring and diagnosing device comprises a power module, an alternating current transformer and a direct current transformer, and is characterized by also comprising an analog quantity and switching quantity acquisition board, a communication conversion control module and a controller provided with a monitoring station machine module; the alternating current transformer and the direct current transformer are connected with the input ends of the analog quantity and switching value acquisition boards; the analog quantity and switching value acquisition board is connected with the communication conversion control module; and the communication conversion control module is connected with the controller.
2. The portable railway signal monitoring and diagnosing device as claimed in claim 1, wherein the communication conversion control module is connected to the analog quantity and switching value acquisition board through a CAN bus; the communication conversion control module is connected with the controller through an RJ45 interface and a network cable.
3. The portable railway signal monitoring and diagnosing device as claimed in claim 1, wherein the analog quantity and switching value collecting board comprises a fuse, a pre-attenuation protection unit, a buffer amplification unit, an AD conversion chip, a digital isolator, an anti-reverse current limiting circuit, an optical coupler isolator, a CPU processor, a CPLD logic controller, a power voltage stabilizing unit and an external FLASH chip;
the voltage analog input interface is sequentially connected with the pre-attenuation protection unit, the buffer amplification unit, the AD conversion chip and the digital isolator; the switching value signal input interface is sequentially connected with an anti-reverse current limiting circuit and an optical coupling isolator; the output ends of the digital isolator and the optical coupling isolator are respectively connected with the input end of the CPLD logic controller, and the output end of the CPLD logic controller is connected with the CPU processor.
4. The apparatus as claimed in claim 3, wherein the AD conversion chip is a 12-bit two-channel successive approximation type A/D converter.
5. A portable railway signal monitoring and diagnosis device according to claim 3, wherein the CPU processor is provided with an external SDRAM space.
6. The portable railway signal monitoring and diagnosing device as claimed in claim 1, wherein the communication switching control module is provided with an RS232 configuration interface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921215663.XU CN211293088U (en) | 2019-07-30 | 2019-07-30 | Portable railway signal monitoring and diagnosing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921215663.XU CN211293088U (en) | 2019-07-30 | 2019-07-30 | Portable railway signal monitoring and diagnosing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211293088U true CN211293088U (en) | 2020-08-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921215663.XU Active CN211293088U (en) | 2019-07-30 | 2019-07-30 | Portable railway signal monitoring and diagnosing device |
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| Country | Link |
|---|---|
| CN (1) | CN211293088U (en) |
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2019
- 2019-07-30 CN CN201921215663.XU patent/CN211293088U/en active Active
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