CN107678349A - Rail transit signal acquisition system - Google Patents
Rail transit signal acquisition system Download PDFInfo
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- CN107678349A CN107678349A CN201710994851.6A CN201710994851A CN107678349A CN 107678349 A CN107678349 A CN 107678349A CN 201710994851 A CN201710994851 A CN 201710994851A CN 107678349 A CN107678349 A CN 107678349A
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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
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/042—Programme control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors
- G05B19/0423—Input/output
- G05B19/0425—Safety, monitoring
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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
- G05B2219/26—Pc applications
- G05B2219/2612—Data acquisition interface
Abstract
The invention provides a rail transit signal acquisition system, which relates to the technical field of rail transit signal control and comprises the following components: the device comprises a controller, a power supply module, a level signal acquisition module, an output detection module, a power supply controller and a dynamic driver. The power supply comprises a first controller, a second controller, a first power supply module, a second power supply module, a first output detection module and a second output detection module. The level signal acquisition module comprises a level input acquisition circuit, a level pulse acquisition circuit and a differential pulse acquisition circuit, the power supply module is respectively connected with the controller and the output detection module, the controller is connected with the output detection module and the power supply controller, the two controllers are connected through the dual-interface RAM, and the power supply controller is connected with the dynamic driver. The technical scheme relieves the technical problems of poor applicability and low reliability in the prior art, enhances the applicability of the rail transit output signal control system, and simultaneously improves the reliability of the rail transit output signal control system.
Description
Technical field
The present invention relates to track traffic signal control technology field, and system is gathered more particularly, to a kind of track traffic signal
System.
Background technology
Currently, track transportation industry development in China's is swift and violent, and according to recent statistics, subway, ground are opened in existing 22 cities in the whole nation
Iron runs 2764 kilometers of total kilometrage, and the current granted city of 39 subway constructions, general planning mileage is more than 7300 kilometers.The year two thousand twenty,
It is expected that the granted city for building subway will be more than 50, urban track traffic operation mileage is up to 6000 kms, it is contemplated that
Newly-increased investment is more than 2.4 trillion.
At present, the signal system in track traffic is track traffic operation " brain ", is responsible for the whole track traffic of tissue
Normal operation, ensure operation safety.Meanwhile signal system is a high reliability, the system of high security, technology content
Higher, current China's major part signal system is based on import developed country product, even if some domestic signal systems, also face
The problems such as hardware is fallen behind, and software notion needs renewal badly.In track field of traffic control, its Safety output is controlled by directly driving
Outside safety relay is so as to controlling corresponding signalling arrangement.
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
The logical output signal control system scope of application is small, and its equipment applied is difficult to meet user for a variety of transmission signals
The signal control of external rail safety control device, and traditional track traffic output signal control system framework is complicated, power consumption
It is high, cost is high, while the signal transmission link of control system single causes system reliability low.Therefore, rail of the prior art
Technical problem poor for applicability, that reliability is low be present in road traffic output signal control system.
The content of the invention
In view of this, it is an object of the invention to provide a kind of track traffic signal acquisition system, to alleviate prior art
Present in poor for applicability, technical problem that reliability is low.
The embodiments of the invention provide a kind of track traffic signal acquisition system, including：Controller, power module, level
Signal acquisition module, output detection module, power-supply controller of electric and dynamic driver；
Controller includes the first controller and second controller；
Power module includes the first power module and second source module；
Level signal acquisition module is connected with output detection module, and level signal acquisition module gathers and sends collection signal；
Level signal acquisition module includes level input Acquisition Circuit, level pulse Acquisition Circuit and differential pulse Acquisition Circuit；
Exporting detection module includes the first output detection module and the second output detection module；
First power module is connected with the first controller and the first output detection module respectively, the first controller and the first output
Detection module connects, and the first controller is also connected with power-supply controller of electric；
Second source module is connected with second controller and the second output detection module respectively, second controller and the second output
Detection module connects, and second controller is also connected with power-supply controller of electric；
It is connected between first controller and second controller by double nip RAM；
Power-supply controller of electric is connected with dynamic driver.
Further, in track traffic signal acquisition system provided in an embodiment of the present invention, output detection module includes：Letter
Number collecting unit, filter unit, output signal register, pulse detecting unit, signal feedback unit and clock unit；
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
Controller connects with second controller；
Signal gathering unit receives the collection signal that level signal acquisition module is sent；
Signal gathering unit also receive and send the output of the first controller the first output signal and second controller output the
Two output signals；
Filter unit generates and sends the first measured signal according to the first output signal, is generated and sent according to the second output signal
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 controller, while the first pulse frequency data and the second pulse frequency data are sent to second controller.
Further, in track traffic signal acquisition system provided in an embodiment of the present invention, collection signal inputs for level
Signal, level pulse signal or differential pulse signal.
Further, in track traffic signal acquisition system provided in an embodiment of the present invention, level input Acquisition Circuit with
The first optical coupling isolation circuit is also associated between output detection module.
Further, in track traffic signal acquisition system provided in an embodiment of the present invention, level pulse Acquisition Circuit with
Amplifying circuit and the second optical coupling isolation circuit have been also respectively connected between output detection module.
Further, in track traffic signal acquisition system provided in an embodiment of the present invention, differential pulse Acquisition Circuit with
485 interface chips are also associated between output detection module.
The embodiment of the present invention brings following beneficial effect：The track traffic signal collection system that the embodiment of the present invention is provided
System, including：Controller, power module, level signal acquisition module, output detection module, power-supply controller of electric and dynamic driver.
Controller includes the first controller and second controller, and power module includes the first power module and second source module, output
Detection module includes the first output detection module and the second output detection module.Level signal acquisition module and output detection module
It is connected, level signal acquisition module gathers and sends collection signal.Level signal acquisition module includes level input collection electricity
Road, level pulse Acquisition Circuit and differential pulse Acquisition Circuit.First power module exports with the first controller and first respectively
Detection module is connected, and the first controller is connected with the first output detection module, and the first controller is also connected with power-supply controller of electric
Connect.Second source module is connected with second controller and the second output detection module respectively, second controller and the second output
Detection module connects, and second controller is also connected with power-supply controller of electric.By double between first controller and second controller
Interface RAM is connected, and power-supply controller of electric is connected with dynamic driver.The technical scheme is by using level signal acquisition module
Collection to external device signal, with the mode that the dual link signal control of controller is combined, realize for a variety of
The signal control of the external rail safety control device of transmission signal, enhances track traffic output signal control system and is applicable
Property, while its reliability is improved, the control system misoperation caused by the maloperation of user is avoided, simplifies control
System architecture, system power dissipation is reduced, while reduce and signal control when institute is carried out to the control device based on various communications protocols
The quantity of instrument is needed, reduce further the cost of control system, alleviates the track traffic output signal control of prior art
Technical problem poor for applicability existing for system, reliability is low.
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 structural representation of track traffic signal acquisition system provided in an embodiment of the present invention.
Icon：
100- controllers；The controllers of 110- first；120- second controllers；200- power modules；The power modules of 210- first；
220- second source modules；300- level signal acquisition modules；310- level inputs Acquisition Circuit；320- level pulses collection electricity
Road；330- differential pulse Acquisition Circuits；400- exports detection module；410- first exports detection module；411- signal acquisition lists
Member；412- filter units；413- output signal registers；414- pulse detecting units；415- signal feedback units；416- clocks
Unit；420- second exports detection module；500- power-supply controller of electric；600- dynamic drivers.
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, the existing track traffic output signal control system scope of application is small, and its equipment applied is difficult to meet
User controls for the signal of the external rail safety control device with a variety of transmission signals, and traditional track traffic exports
Whistle control system framework is complicated, power consumption is high, cost is high, while the signal transmission link of control system single causes system reliable
Property it is low, based on this, a kind of track traffic signal acquisition system provided in an embodiment of the present invention, can improve track traffic output letter
The applicability and reliability of number control system.
Referring to Fig. 1, a kind of structural representation for track traffic signal acquisition system that the embodiment of the present invention is provided.This hair
A kind of track traffic signal acquisition system that bright embodiment provides, including：Controller 100, power module 200, level signal are adopted
Collect module 300, output detection module 400, power-supply controller of electric 500 and dynamic driver 600.
Controller includes the first controller 110 and second controller 120, and controller is using the production of Freescale company
P1010 chips, its output signal are the output signal that frequency is 25KHz, and controller uses PowerPC frameworks, and it has power consumption
The characteristics of low, efficiency high, high reliability.Specifically, two CPU write data to control by Local Bus buses to output unit
Output module processed, because CPU can only realize the control to external relay in a manner of interruption, therefore control signal need to pass through
One-level latch SN74AHC373NSR maintains its state of a control, and two CPU, to a data are write in bus, pass through per 20us
25KHz square wave is can obtain after latch.The output of first controller and second controller Collaborative Control track traffic signal,
Realize the control to external signalling arrangement.Power module 200 includes the first power module 210 and second source module 220, power supply
Module provides 24V power inputs for connected component.Exporting detection module 400 includes the first output detection module 410
With the second output detection module 420, output detection module is used for the detection of controller output signal, and then avoids user due to by mistake
Controller output abnormality caused by operation, to ensure controller normal operation.
Level signal acquisition module is connected with exporting the signal gathering unit of detection module, and level signal acquisition module is adopted
Collect and send collection signal.Specifically, level signal acquisition module 300 includes level input Acquisition Circuit 310, level pulse is adopted
Collector 320 and differential pulse Acquisition Circuit 330.Further, track traffic signal collection system provided in an embodiment of the present invention
In system, the first optical coupling isolation circuit is also associated between level input Acquisition Circuit and output detection module（Not shown in figure）.
Level inputs Acquisition Circuit by the way of dynamic acquisition, i.e., by inputting disconnection and the closure of Acquisition Circuit, collection to level
The transmission signal of outside instrument and equipment, transmission signal generates level input signal after the conversion of the first optical coupling isolation circuit, defeated
Go out detection module and receive the level input signal.There is jitter elimination function to eliminate contact bounce and electricity for level input collection
Moment level change caused by magnetic disturbance, because general switch or relay contact are shaken in 5 ~ 50ms, so thresholding is arranged to
50ms, specifically it can also be configured according to actual conditions.Further, track traffic signal collection provided in an embodiment of the present invention
In system, amplifying circuit and the second light-coupled isolation electricity have been also respectively connected between level pulse Acquisition Circuit and output detection module
Road（Not shown in figure）.The transmission signal of instrument and equipment outside the collection of level pulse Acquisition Circuit, the amplified electricity of transmission signal
Level pulse signal is generated behind road and the conversion of the second optical coupling isolation circuit, output detection module receives the level pulse signal.Enter
One step, in track traffic signal acquisition system provided in an embodiment of the present invention, differential pulse Acquisition Circuit and output detection mould
485 interface chips are also associated between block（Not shown in figure）.The biography of instrument and equipment outside the collection of differential pulse Acquisition Circuit
Defeated signal, transmission signal generate differential pulse signal after the conversion of 485 interface chips, and output detection module receives the differential pulse
Signal.After output detection module collects data-signal, controller to is sent data-signal by Local Bus buses, by
Data are further processed controller.
First power module is connected with the first controller and the first output detection module respectively, and 24V power supplys are provided for it
Voltage.First controller is connected with the first output detection module, is realized between the first controller and the first output detection module
Signal transmission, the first controller is also connected with power-supply controller of electric.Second source module respectively with second controller and second
Output detection module is connected, and 24V supply voltages are provided for it.Second controller is connected with the second output detection module, is realized
Signal between second controller and the second output detection module transmits.Second controller is also connected with power-supply controller of electric.
When power-supply controller of electric judges that the first controller is in normal operation with second controller, power driving signal is generated, and will
It, which is sent to connected dynamic driver, dynamic driver, starts, outputting drive voltage, driving outside and dynamic driver
The relay of connection, finally realize the control of track traffic signal.
It is connected between first controller and second controller by double nip RAM, realizes the first controller and second
Output signal between controller is mutually passed, and the address bit for corresponding to the controller for producing signal is included in output signal, is used for
Identify the source of output signal.Meanwhile first controller and second controller data are carried out by double nip RAM 2 take 2 ratios
Compared with i.e. the first controller and second controller are believed all level input signals collected, level pulse signal, differential pulse
Number carry out taking 2 to compare, to ensure the accuracy of system data acquisition.
Power-supply controller of electric is connected with dynamic driver.Specifically, when power-supply controller of electric judges the first controller and second
When controller is in normal operation, power driving signal is generated, and sends it to connected dynamic driver, dynamic
Driver starts, outputting drive voltage, the outside relay being connected with dynamic driver of driving, finally realizes track traffic signal
Control.
Further, in track traffic signal acquisition system provided in an embodiment of the present invention, output detection module includes：Letter
Number collecting unit 411, filter unit 412, output signal register 413, pulse detecting unit 414, the and of signal feedback unit 415
Clock unit 416.First output detection module belongs to the second output detection module has mutually isostructural device, its internal institute
It is identical containing the annexation between unit and unit.
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 controller connects with second controller.
Signal gathering unit receives the collection signal that level signal acquisition module is sent.Further, the embodiment of the present invention
In the track traffic signal acquisition system of offer, collection signal is level input signal, level pulse signal or differential pulse letter
Number.It has been observed that level signal acquisition module includes level input Acquisition Circuit, level pulse Acquisition Circuit and differential pulse collection
Circuit, the interface connection of three circuits respectively corresponding thereto.Specifically, level input Acquisition Circuit transmission level input letter
Number, level pulse Acquisition Circuit transmission level pulse signal, differential pulse Acquisition Circuit sends differential pulse signal.
Signal gathering unit also receives and sends the first output signal and the second controller output of the first controller output
The second output signal.Specifically, signal gathering unit includes the first EBI（Not shown in figure）With the second EBI
（Not shown in figure）.Wherein, the first EBI is connected with the output end of the first controller, receives the first output signal；Second
The output end of EBI and second controller connects, and receives the second output signal.
Output signal register includes the first output signal register and the second output signal register, filter unit according to
First output signal generates and sends the first measured signal to the first output signal register, according to the generation of the second output signal simultaneously
The second measured signal to the second output signal register is sent, filter unit is used for the first output signal and the second output signal
In high frequency spurs filtering, 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, pulse detecting unit reads the first measured signal in the first output signal register, and detects the
The rising edge of effective impulse in one measured signal, 10ms the first measured signal is stored in the first output signal register, the
The number of one output signal register is 10, and the data of each register update once per 10ms, add up the first output signal
The total number of effective impulse in register, generate the first pulse frequency data, i.e., effective impulse in the first measured signal 100ms
Total number.
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 the first controller, meanwhile, pulse detecting unit sends the first pulse frequency data and the second pulse frequency data to second
Controller.Specifically, signal feedback unit is the 3rd EBI, the 3rd EBI is controlled with the first controller and second respectively
The input connection of device processed, pulse detecting unit send the first pulse frequency data and the second pulse frequency by the 3rd EBI
Rate data.In order to improve the reliability of output signal control system, realized by the way of double-circuit track traffic output signal
The control of signal, the technical scheme ensure that the data accuracy of double-circuit track traffic output signal link, and controller passes through
Back production data can realize testing oneself for controller, simplify the flow of conventional rails traffic output signal detection, improve detection
Efficiency.
The track traffic signal acquisition system that the embodiment of the present invention is provided, including：Controller, power module, level letter
Number acquisition module, output detection module, power-supply controller of electric and dynamic driver.Controller includes the first controller and the second control
Device, power module include the first power module and second source module, output detection module include the first output detection module and
Second output detection module.Level signal acquisition module is connected with output detection module, and level signal acquisition module gathers simultaneously
Send collection signal.Level signal acquisition module includes level input Acquisition Circuit, level pulse Acquisition Circuit and differential pulse
Acquisition Circuit.First power module is connected with the first controller and the first output detection module respectively, the first controller and the
One output detection module connection, the first controller are also connected with power-supply controller of electric.Second source module controls with second respectively
Device and second output detection module be connected, second controller with second export detection module be connected, second controller also with electricity
Source controller is connected.It is connected between first controller and second controller by double nip RAM, power-supply controller of electric and dynamic
Driver is connected.The technical scheme is by using collection of the level signal acquisition module to external device signal, with controller
The mode that is combined of dual link signal control, realize for the external rail safety control device with a variety of transmission signals
Signal control, enhance track traffic output signal control system applicability, while improve its reliability, avoid due to
Control system misoperation caused by the maloperation at family, simplifies control system framework, reduces system power dissipation, reduces simultaneously
The quantity of required instrument during signal control is carried out to the control device based on various communications protocols, reduce further control system
Cost, alleviate poor for applicability, technology that reliability is low existing for the track traffic output signal control system of prior art
Problem.
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 (6)
- A kind of 1. track traffic signal acquisition system, it is characterised in that including：Controller, power module, level signal collection mould Block, output detection module, power-supply controller of electric and dynamic driver；The controller includes the first controller and second controller；The power module includes the first power module and second source module；The level signal acquisition module is connected with the output detection module, and the level signal acquisition module collection is concurrent Send collection signal；The level signal acquisition module includes level input Acquisition Circuit, level pulse Acquisition Circuit and difference arteries and veins Rush Acquisition Circuit；The output detection module includes the first output detection module and the second output detection module；First power module is connected with first controller and the first output detection module respectively, first control Device is connected with the described first output detection module, and first controller is also connected with the power-supply controller of electric；The second source module is connected with the second controller and the second output detection module respectively, second control Device is connected with the described second output detection module, and the second controller is also connected with the power-supply controller of electric；It is connected between first controller and the second controller by double nip RAM；The power-supply controller of electric is connected with the dynamic driver.
- 2. system according to claim 1, it is characterised in that the output detection module includes：Signal gathering unit, filter Ripple unit, output signal register, pulse detecting unit, signal feedback unit and clock unit；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 first controller and second controller respectively by the signal feedback unit；The signal gathering unit receives the collection signal that the level signal acquisition module is sent；The signal gathering unit also receives and sends the first output signal of the first controller output and second control Second output signal of device output processed；The filter unit generates and sends the first measured signal according to first output signal, is believed according to the described second output 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 first controller, while the first pulse frequency data and the second pulse frequency data are sent to institute State second controller.
- 3. system according to claim 1, it is characterised in that the collection signal is level input signal, level pulse Signal or differential pulse signal.
- 4. system according to claim 1, it is characterised in that the level input Acquisition Circuit detects mould with the output The first optical coupling isolation circuit is also associated between block.
- 5. system according to claim 1, it is characterised in that the level pulse Acquisition Circuit detects mould with the output Amplifying circuit and the second optical coupling isolation circuit have been also respectively connected between block.
- 6. system according to claim 1, it is characterised in that the differential pulse Acquisition Circuit detects mould with the output 485 interface chips are also associated between block.
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| CN201710994851.6A CN107678349A (en) | 2017-10-23 | 2017-10-23 | Rail transit signal acquisition system |
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| CN201710994851.6A CN107678349A (en) | 2017-10-23 | 2017-10-23 | Rail transit signal acquisition system |
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| CN115320675A (en) * | 2022-10-17 | 2022-11-11 | 北京城建智控科技股份有限公司 | Signal circuit control device for rail transit control |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115278402A (en) * | 2022-07-27 | 2022-11-01 | 南京慧尔视智能科技有限公司 | Information acquisition equipment and method |
| CN115278402B (en) * | 2022-07-27 | 2023-09-01 | 南京慧尔视智能科技有限公司 | Information acquisition equipment and method |
| CN115320675A (en) * | 2022-10-17 | 2022-11-11 | 北京城建智控科技股份有限公司 | Signal circuit control device for rail transit control |
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Application publication date: 20180209 |