CN107817783A - Method and system for detecting recovery of output signal of rail transit - Google Patents
Method and system for detecting recovery of output signal of rail transit Download PDFInfo
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- CN107817783A CN107817783A CN201710994054.8A CN201710994054A CN107817783A CN 107817783 A CN107817783 A CN 107817783A CN 201710994054 A CN201710994054 A CN 201710994054A CN 107817783 A CN107817783 A CN 107817783A
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B23/00—Testing or monitoring of control systems or parts thereof
- G05B23/02—Electric testing or monitoring
- G05B23/0205—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults
- G05B23/0208—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults characterized by the configuration of the monitoring system
- G05B23/0213—Modular or universal configuration of the monitoring system, e.g. monitoring system having modules that may be combined to build monitoring program; monitoring system that can be applied to legacy systems; adaptable monitoring system; using different communication protocols
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/20—Pc systems
- G05B2219/24—Pc safety
- G05B2219/24065—Real time diagnostics
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- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Train Traffic Observation, Control, And Security (AREA)
Abstract
The invention provides a rail transit output signal recovery detection method and a rail transit output signal recovery detection system, and relates to the technical field of rail transit signal control. The pulse detection unit respectively reads and detects the rising edges of the effective pulses of the first signal to be detected and the second signal to be detected, and generates first pulse frequency data corresponding to the first signal to be detected and second pulse frequency data corresponding to the second signal to be detected. The first pulse frequency data and the second pulse frequency data are simultaneously transmitted to the first processor and the second processor. The technical scheme relieves the technical problems of low detection efficiency and high cost in the prior art, realizes evaluation and detection of the performance of the processor, improves the precision and reliability of a detection system, reduces the detection cost and improves the detection efficiency.
Description
Technical field
The present invention relates to track traffic signal control technology field, more particularly, to a kind of track traffic output signal back production
Detection method and system.
Background technology
In track field of traffic control, generally, its Safety output by directly drive control it is outside safely after
Electrical equipment is so as to controlling corresponding signalling arrangement (such as car such as semaphore, goat trackside equipment and pull-in control system, car door
Carry equipment).Generally, Safety output system external certain voltage is provided so that external relay excitation pick up or
Loss of excitation falls and then controls external signal equipment.If but system output error, it is likely that cause very serious accident.
At present, the Safety output control of industry generally existing has two kinds, and one kind is Static output mode, that is, needs externally defeated
When going out, the voltage that can be allowed it to excitation and pick up is provided directly to external relay.Another way is dynamical output mode,
When needing externally to export, the pulse signal of certain frequency is exported, electric capacity is charged using pulse, is then relay by electric capacity
Power supply, enables capacitance voltage to maintain the shape that external relay keeps excitation to pick up using the asymmetry of discharge and recharge
State.
In process of the present invention is realized, inventor has found that at least there are the following problems in the prior art：Existing track is handed over
Logical output signal detecting system complex structural designs, it is more to be related to species and the quantity of component, adds testing cost, and examine
Flow gauge is cumbersome time-consuming, wastes time and energy, is readily incorporated interference signal, causes the increase of error information detection, therefore, prior art
The technical problem that detection efficiency is low, cost is high be present.
The content of the invention
In view of this, it is an object of the invention to provide a kind of track traffic output signal back production detection method and system,
To alleviate existing for prior art the technical problem that detection efficiency is low, cost is high.
In a first aspect, the embodiments of the invention provide a kind of track traffic output signal back production detection method, including：
Signal gathering unit receives the first square-wave signal of first processor output and the second square wave letter of second processor output
Number；
Filter unit is according to the first square wave signal generation and sends the first measured signal, according to the second square wave signal generation and sends
Second measured signal；
Pulse detecting unit reads and detects the first measured signal and the rising edge of the effective impulse of the second measured signal respectively, raw
Into the first pulse frequency data corresponding to the first measured signal and the second pulse frequency data corresponding to the second measured signal；
First pulse frequency data and the second pulse frequency data are sent to first processor, while by the first pulse frequency number
Sent according to the second pulse frequency data to second processor.
Further, in track traffic output signal back production detection method provided in an embodiment of the present invention, generation corresponds to
First pulse frequency data of the first measured signal and the second pulse frequency data corresponding to the second measured signal, it is specially：
10ms the first measured signal is stored in first output signal register, the number of the first output signal register is 10
It is individual, add up the total number of effective impulse in the first output signal register, generate the first pulse frequency data；
10ms the second measured signal is stored in second output signal register, the number of the second output signal register is 10
It is individual, the total number of the effective impulse added up in the second output signal register, generate the second pulse frequency data.
Second aspect, the embodiments of the invention provide a kind of track traffic output signal back production detecting system, including：First
Processor, second processor, output signal back production module and power module, wherein, output signal back production module includes：Signal is adopted
Collect unit, filter unit, output signal register, pulse detecting unit, signal feedback unit and clock unit；
Power module is connected with first processor, second processor, output signal back production module respectively, first processor, second
Processor is connected with output signal back production module respectively, and the quantity of output signal back production module is two；
Signal gathering unit is connected by filter unit with output signal register, output signal register and pulse detecting unit
It is connected, output signal register is also connected with clock unit, and pulse detecting unit is by signal feedback unit respectively with first
Processor connects with second processor；
Signal gathering unit receives the first square-wave signal of first processor output and the second square wave letter of second processor output
Number；
Filter unit is according to the first square wave signal generation and sends the first measured signal, according to the second square wave signal generation and sends
Second measured signal；
Pulse detecting unit reads and detects the first measured signal and the second measured signal of output signal register storage respectively
Effective impulse rising edge, generation corresponding to the first measured signal the first pulse frequency data and corresponding to the second letter to be measured
Number the second pulse frequency data；
Pulse detecting unit is sent the first pulse frequency data and the second pulse frequency data to by signal feedback unit
One processor, while the first pulse frequency data and the second pulse frequency data are sent to second processor.
Further, in track traffic output signal back production detecting system provided in an embodiment of the present invention, signal acquisition list
Member includes the first EBI and the second EBI；
First EBI is connected with first processor, receives the first square-wave signal；
Second EBI is connected with second processor, receives the second square-wave signal.
Further, in track traffic output signal back production detecting system provided in an embodiment of the present invention, signal feedback
Member is the 3rd EBI；
3rd EBI is connected with first processor and second processor respectively, and pulse detecting unit passes through the 3rd EBI
Send the first pulse frequency data and the second pulse frequency data.
The embodiment of the present invention brings following beneficial effect：The track traffic output signal that the embodiment of the present invention is provided is returned
Detection method and system are adopted, first, signal gathering unit receives the first square-wave signal and second processing of first processor output
Second square-wave signal of device output, filter unit is according to the first square wave signal generation and sends the first measured signal, according to second
Square-wave signal generates and sends the second measured signal.Pulse detecting unit reads and detects the first measured signal and second treats respectively
The rising edge of the effective impulse of signal is surveyed, generation is corresponding to the first pulse frequency data of the first measured signal and corresponding to second
Second pulse frequency data of measured signal.Finally, the first pulse frequency data and the second pulse frequency data are sent to
One processor, while the first pulse frequency data and the second pulse frequency data are sent to second processor.The technical scheme
By the pulse frequency of back production output signal of processor, the assessment detection for processor performance is realized, simplifies conventional rail
Road traffic output signal detecting system structure, reduces the quantity of component needed for detection, and then reduces testing cost, and should
Detecting system fast response time, detection efficiency is high, and operation difficulty is low, and two detection circuits are combined the essence for improving detecting system
Degree and reliability, alleviate existing for prior art the technical problem that detection efficiency is low, cost is high.
To enable the above objects, features and advantages of the present invention to become apparent, preferred embodiment cited below particularly, and coordinate
Appended accompanying drawing, is described in detail below.
Brief description of the drawings
, below will be to specific in order to illustrate more clearly of the specific embodiment of the invention or technical scheme of the prior art
The required accompanying drawing used is briefly described in embodiment or description of the prior art, it should be apparent that, in describing below
Accompanying drawing is some embodiments of the present invention, for those of ordinary skill in the art, before creative work is not paid
Put, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is a kind of flow chart of track traffic output signal back production detection method provided in an embodiment of the present invention；
Fig. 2 is the structural representation of track traffic output signal back production detecting system provided in an embodiment of the present invention.
Icon：
100- first processors；200- second processors；300- output signal back production modules；310- signal gathering units；320-
Filter unit；330- output signal registers；340- pulse detecting units；350- signal feedback units；360- clock units；
400- power modules.
Embodiment
To make the purpose, technical scheme and advantage of the embodiment of the present invention clearer, below in conjunction with accompanying drawing to the present invention
Technical scheme be clearly and completely described, it is clear that described embodiment is part of the embodiment of the present invention, rather than
Whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art are not making creative work premise
Lower obtained every other embodiment, belongs to the scope of protection of the invention.
At present, existing track traffic output signal detecting system complex structural designs, it is related to the species and number of component
Measure more, add testing cost, and testing process is cumbersome time-consuming, wastes time and energy, is readily incorporated interference signal, causes testing number
According to the increase of error, based on this, a kind of track traffic output signal back production detection method and system provided in an embodiment of the present invention,
The assessment detection for processor performance can be realized, testing cost is reduced, improves detection efficiency.
Embodiment one：
Referring to Fig. 1, a kind of flow chart of track traffic output signal back production detection method provided in an embodiment of the present invention.The present invention
A kind of track traffic output signal back production detection method that embodiment provides, including：
Signal gathering unit receives the first square-wave signal of first processor output and the second square wave letter of second processor output
Number.Specifically, signal gathering unit includes the first EBI and the second EBI.Wherein, the first EBI and first
The output end connection of processor, receives the first square-wave signal；The output end of second EBI and second processor connects, and receives
Second square-wave signal.
Filter unit is according to the first square wave signal generation and sends the first measured signal to the first output signal register, filter
Ripple unit is used for according to the second square wave signal generation and transmission the second measured signal to the second output signal register, filter unit
High frequency spurs in first square-wave signal and the second square-wave signal are filtered, reduce signal noise.
Pulse detecting unit reads the first measured signal in the first output signal register, and detects the first measured signal
In effective impulse rising edge, generation corresponding to the first measured signal the first pulse frequency data；Pulse detecting unit is also
The second measured signal in the second output signal register is read, and detects the rising of the effective impulse in the second measured signal
Edge, second pulse frequency data of the generation corresponding to the second measured signal.
Further, in track traffic output signal back production detection method provided in an embodiment of the present invention, pulse detection list
Member generation is specially corresponding to the first pulse frequency data of the first measured signal：Pulse detecting unit reads the first output signal
The first measured signal in register, and the rising edge of the effective impulse in the first measured signal is detected, the first output signal is posted
10ms the first measured signal is stored in storage, the number of the first output signal register is 10, the data of each register
Per 10ms, renewal once, adds up the total number of effective impulse in the first output signal register, generates the first pulse frequency data,
The total number of effective impulse i.e. in the first measured signal 100ms.
Pulse detecting unit generation is specially corresponding to the second pulse frequency data of the second measured signal：Pulse detection list
Member also reads the second measured signal in the second output signal register, and detects the upper of the effective impulse in the second measured signal
Edge is risen, 10ms the second measured signal is stored in the second output signal register, the number of the second output signal register is 10
Individual, the data of each register update once per 10ms, the total number of the effective impulse added up in the second output signal register,
The second pulse frequency data are generated, i.e., the total number of effective impulse in the second measured signal 100ms.
Pulse detecting unit is sent the first pulse frequency data and the second pulse frequency data by signal feedback unit
To first processor, meanwhile, pulse detecting unit is also by signal feedback unit by the first pulse frequency data and the second pulse
Frequency data are sent to second processor.Specifically, signal feedback unit is the 3rd EBI, the 3rd EBI respectively with
First processor connects with the input of second processor, and pulse detecting unit sends the first pulse frequency by the 3rd EBI
Rate data and the second pulse frequency data.In order to improve the reliability of output signal control system, using double-circuit track traffic
The mode of output signal realizes the control of signal, and the technical scheme ensure that the data of double-circuit track traffic output signal link
Accuracy, processor can realize testing oneself for processor by back production data, simplify the detection of conventional rails traffic output signal
Flow, detection efficiency is improved, alleviate existing for prior art the technical problem that detection efficiency is low, cost is high.
The track traffic output signal back production detection method that the embodiment of the present invention is provided, first, signal gathering unit connects
The first square-wave signal of first processor output and the second square-wave signal of second processor output are received, filter unit is according to first
Square-wave signal generates and sends the first measured signal, according to the second square wave signal generation and sends the second measured signal.Pulse is examined
Survey unit to read respectively and detect the first measured signal and the rising edge of the effective impulse of the second measured signal, generation corresponds to the
First pulse frequency data of one measured signal and the second pulse frequency data corresponding to the second measured signal.Finally, by
One pulse frequency data and the second pulse frequency data are sent to first processor, while by the first pulse frequency data and second
Pulse frequency data are sent to second processor.The technical scheme is realized by the pulse frequency of back production output signal of processor
Assessment detection for processor performance, simplifies conventional rails traffic output signal detecting system structure, reduces detection
The quantity of required component, and then testing cost is reduced, and the detecting system fast response time, detection efficiency is high, and operation is difficult
Spend low, two detection circuits are combined the precision and reliability for improving detecting system, alleviate that prior art is existing to be detected
The technical problem that efficiency is low, cost is high.
Embodiment two：
Referring to Fig. 2, the structural representation of track traffic output signal back production detecting system provided in an embodiment of the present invention.The present invention
A kind of track traffic output signal back production detecting system that embodiment provides, including：First processor 100, second processor
200th, output signal back production module 300 and power module 400, wherein, output signal back production module includes：Signal gathering unit
310th, filter unit 320, output signal register 330, pulse detecting unit 340, signal feedback unit 350 and clock unit
360.Power module is connected with first processor, second processor, output signal back production module respectively, first processor, second
Processor is connected with output signal back production module respectively, and the quantity of output signal back production module is two.
Signal gathering unit is connected by filter unit with output signal register, output signal register and pulse detection
Unit is connected, and output signal register is also connected with clock unit, pulse detecting unit by signal feedback unit respectively with
First processor connects with second processor.
Signal gathering unit receives the first square-wave signal of first processor output and the second party of second processor output
Ripple signal.Further, in track traffic output signal back production detecting system provided in an embodiment of the present invention, signal gathering unit
Including the first EBI（Not shown in figure）With the second EBI（Not shown in figure）.Wherein, the first EBI and
The output end connection of one processor, receives the first square-wave signal；The output end of second EBI and second processor connects, and connects
Receive the second square-wave signal.
Output signal register includes the first output signal register and the second output signal register, filter unit according to
First square wave signal generation and send the first measured signal to the first output signal register, filter unit believed according to the second square wave
The second measured signal to the second output signal register number is generated and sent, filter unit is used for the first square-wave signal and second
High frequency spurs filtering in square-wave signal, reduces signal noise.
Pulse detecting unit reads the first measured signal in the first output signal register, and detects the first measured signal
In effective impulse rising edge, generation corresponding to the first measured signal the first pulse frequency data；Pulse detecting unit is also
The second measured signal in the second output signal register is read, and detects the rising of the effective impulse in the second measured signal
Edge, second pulse frequency data of the generation corresponding to the second measured signal.
Further, in track traffic output signal back production detecting system provided in an embodiment of the present invention, pulse detection list
Member reads the first measured signal in the first output signal register, and detects the rising of the effective impulse in the first measured signal
Edge, 10ms the first measured signal being stored in the first output signal register, the number of the first output signal register is 10,
The data of each register update once per 10ms, add up the total number of effective impulse in the first output signal register, generation
First pulse frequency data, i.e., the total number of effective impulse in the first measured signal 100ms.
Pulse detecting unit also reads the second measured signal in the second output signal register, and detects the second letter to be measured
The rising edge of effective impulse in number, 10ms the second measured signal, the second output letter are stored in the second output signal register
The number of number register is 10, and the data of each register update once per 10ms, add up in the second output signal register
Effective impulse total number, generate the second pulse frequency data, i.e., effective impulse is total in the second measured signal 100ms
Number.
Pulse detecting unit is sent the first pulse frequency data and the second pulse frequency data by signal feedback unit
To first processor, meanwhile, pulse detecting unit is also by signal feedback unit by the first pulse frequency data and the second pulse
Frequency data are sent to second processor.Specifically, signal feedback unit is the 3rd EBI, the 3rd EBI respectively with
First processor connects with the input of second processor, and pulse detecting unit sends the first pulse frequency by the 3rd EBI
Rate data and the second pulse frequency data.In order to improve the reliability of output signal control system, using double-circuit track traffic
The mode of output signal realizes the control of signal, and the technical scheme ensure that the data of double-circuit track traffic output signal link
Accuracy, processor can realize testing oneself for processor by back production data, simplify the detection of conventional rails traffic output signal
Flow, detection efficiency is improved, alleviate existing for prior art the technical problem that detection efficiency is low, cost is high.
The track traffic output signal back production detecting system that the embodiment of the present invention is provided, including：First processor, second
Processor, output signal back production module and power module, wherein, output signal back production module includes：Signal gathering unit, filtering
Unit, output signal register, pulse detecting unit, signal feedback unit and clock unit；Power module respectively with first at
Manage device, second processor, output signal back production module connection, first processor, second processor respectively with output signal back production
Module is connected, and the quantity of output signal back production module is two；Signal gathering unit passes through filter unit and output signal
Register connects, and output signal register is connected with pulse detecting unit, and output signal register is also connected with clock unit,
Pulse detecting unit is connected with first processor and second processor respectively by signal feedback unit.The technical scheme is by returning
The pulse frequency of output signal of processor is adopted, the assessment detection for processor performance is realized, simplifies conventional rails traffic
Output signal detecting system structure, reduces the quantity of component needed for detection, and then reduces testing cost, and the detection system
Unite fast response time, detection efficiency is high, and operation difficulty is low, and two detection circuits are combined the precision that improves detecting system and can
By property, the technical problem that detection efficiency is low, cost is high is alleviated existing for prior art.
In the description of the embodiment of the present invention, unless otherwise clearly defined and limited, term " installation ", " connected ", " company
Connect " it should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected, or it is integrally connected；It can be machine
Tool connects or electrical connection；Can be joined directly together, can also be indirectly connected by intermediary, can be two members
Connection inside part.For the ordinary skill in the art, above-mentioned term can be understood in the present invention with concrete condition
Concrete meaning.
In the description of the invention, it is necessary to explanation, term " " center ", " on ", " under ", "left", "right", " vertical ",
The orientation or position relationship of the instruction such as " level ", " interior ", " outer " be based on orientation shown in the drawings or position relationship, merely to
Be easy to the description present invention and simplify description, rather than instruction or imply signified device or element must have specific orientation,
With specific azimuth configuration and operation, therefore it is not considered as limiting the invention.In addition, term " first ", " second ",
" the 3rd " is only used for describing purpose, and it is not intended that instruction or hint relative importance.
Finally it should be noted that：Embodiment described above, it is only the embodiment of the present invention, to illustrate the present invention
Technical scheme, rather than its limitations, protection scope of the present invention is not limited thereto, although with reference to the foregoing embodiments to this hair
It is bright to be described in detail, it will be understood by those within the art that：Any one skilled in the art
The invention discloses technical scope in, it can still modify to the technical scheme described in previous embodiment or can be light
Change is readily conceivable that, or equivalent substitution is carried out to which part technical characteristic；And these modifications, change or replacement, do not make
The essence of appropriate technical solution departs from the spirit and scope of technical scheme of the embodiment of the present invention, should all cover the protection in the present invention
Within the scope of.Therefore, protection scope of the present invention should be based on the protection scope of the described claims.
Claims (5)
- A kind of 1. track traffic output signal back production detection method, it is characterised in that including：Signal gathering unit receives the first square-wave signal of first processor output and the second square wave letter of second processor output Number；Filter unit is according to the first square wave signal generation and sends the first measured signal, is given birth to according to second square-wave signal Into and send the second measured signal；Pulse detecting unit reads and detects the rising of the effective impulse of first measured signal and the second measured signal respectively Edge, generate second corresponding to the first pulse frequency data of first measured signal and corresponding to second measured signal Pulse frequency data；The first pulse frequency data and the second pulse frequency data are sent to the first processor, while by described One pulse frequency data and the second pulse frequency data are sent to the second processor.
- 2. according to the method for claim 1, it is characterised in that the generation is corresponding to the first of first measured signal Pulse frequency data and the second pulse frequency data corresponding to second measured signal, it is specially：10ms the first measured signal is stored in first output signal register, the number of the first output signal register is 10, add up the total number of effective impulse in the first output signal register, generate the first pulse frequency data；10ms the second measured signal is stored in second output signal register, the number of the second output signal register is 10, the total number of the effective impulse added up in the second output signal register, generate the second pulse frequency data.
- A kind of 3. track traffic output signal back production detecting system, it is characterised in that including：First processor, second processor, Output signal back production module and power module, wherein, the output signal back production module includes：Signal gathering unit, filtering are single Member, output signal register, pulse detecting unit, signal feedback unit and clock unit；The power module is connected with the first processor, second processor, output signal back production module respectively, and described first Processor, second processor are connected with the output signal back production module respectively, and the number of the output signal back production module Measure as two；The signal gathering unit is connected by the filter unit with the output signal register, the output signal deposit Device is connected with the pulse detecting unit, and the output signal register is also connected with the clock unit, the pulse inspection Unit is surveyed to be connected with the first processor and second processor respectively by the signal feedback unit；The signal gathering unit receives the first square-wave signal and the second processor output of the first processor output The second square-wave signal；The filter unit is according to the first square wave signal generation and sends the first measured signal, is believed according to second square wave Number generate and send the second measured signal；The pulse detecting unit reads and detects the first measured signal and second of the output signal register storage respectively The rising edge of the effective impulse of measured signal, first pulse frequency data and correspondingly of the generation corresponding to first measured signal In the second pulse frequency data of second measured signal；The pulse detecting unit is by the signal feedback unit by the first pulse frequency data and the second pulse frequency Data are sent to the first processor, while the first pulse frequency data and the second pulse frequency data are sent to institute State second processor.
- 4. system according to claim 3, it is characterised in that the signal gathering unit includes the first EBI and the Two lines bus interface；First EBI is connected with the first processor, receives the first square-wave signal；Second EBI is connected with the second processor, receives the second square-wave signal.
- 5. system according to claim 3, it is characterised in that the signal feedback unit is the 3rd EBI；3rd EBI is connected with the first processor and second processor respectively, and the pulse detecting unit passes through 3rd EBI sends the first pulse frequency data and the second pulse frequency data.
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| CN201710994054.8A CN107817783B (en) | 2017-10-23 | 2017-10-23 | Method and system for detecting recovery of output signal of rail transit |
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| CN201710994054.8A CN107817783B (en) | 2017-10-23 | 2017-10-23 | Method and system for detecting recovery of output signal of rail transit |
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| CN101905700A (en) * | 2010-07-23 | 2010-12-08 | 上海亨钧科技有限公司 | Computer interlocking system and working method thereof |
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| CN104386091A (en) * | 2014-09-23 | 2015-03-04 | 浙江众合机电股份有限公司 | Rail traffic safety control circuit and system |
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| CN106289256A (en) * | 2016-07-25 | 2017-01-04 | 湖北师范大学 | Signal calculated processing system based on two CSTR Yu FPGA architecture |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101905700A (en) * | 2010-07-23 | 2010-12-08 | 上海亨钧科技有限公司 | Computer interlocking system and working method thereof |
| CN103760801A (en) * | 2014-01-24 | 2014-04-30 | 浙江众合机电股份有限公司 | Signal collecting method based on safe input system and system of signal collecting method |
| CN104386091A (en) * | 2014-09-23 | 2015-03-04 | 浙江众合机电股份有限公司 | Rail traffic safety control circuit and system |
| CN105629043A (en) * | 2014-10-31 | 2016-06-01 | 陕西高华知本化工科技有限公司 | High-voltage electronic pulse track acquisition device and method |
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