CN1326734C - Intelligent contactless control device in basic equipment of railway signal - Google Patents
Intelligent contactless control device in basic equipment of railway signal Download PDFInfo
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- CN1326734C CN1326734C CNB2004100316903A CN200410031690A CN1326734C CN 1326734 C CN1326734 C CN 1326734C CN B2004100316903 A CNB2004100316903 A CN B2004100316903A CN 200410031690 A CN200410031690 A CN 200410031690A CN 1326734 C CN1326734 C CN 1326734C
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Abstract
The present invention relates to an intelligent contactless control device of the basic equipment for railway signals, which comprises an instruction input isolation circuit, a communication circuit of an industrial field bus, an isolation circuit for the state of the basic equipment, a railway circuit, a computer and a contactless control device. The control device directly controls a point operating machine and a signaler, and identifies the state of the railway circuit. Unnormal conditions are judged by an action order of a device at the upper level, the state of the basic equipment of a railway signal and the industrial field bus; the output is switched on or off by a contactless micro-electronic power switch is according to the requirements of the action orders so that the basic equipment acquires a controlled work current. The railway circuit formed according to the principle of constant-current sources can judge the states of a single-section railway and double-section railway, and can adjust and judge according to the change of external conditions on lines. The device integrates order receiving, signal collection, logical judgment, control output, fault positioning and distant communication, and is a novel control device of the basic equipment for controlling the railway signals.
Description
Technical field
The present invention relates to a kind of railway signal control device, particularly a kind of railway signal foundation equipment intelligence contactless control setup.
Background technology
Existing railway signal foundation equipment--switch machine, signal, track circuit all are the relay control circuits that prolongs with traditional.Because the input of relay control is the level signal cut-in relay line bag by action command, and the action of driving infrastructure device (as switch machine, signal) is to implement its control operation by the break-make of relay contact.From the control angle, this is the control of a kind of electric signal, from output control, is that the break-make by the contact realizes.Clearly this just needs scheduled maintenance and daily attention, with the reliable contact of the contact that guarantees relay.In addition, 6~8 relays, the combination wiring is numerous and diverse, and constructional difficulties, and easy-to-search fault not also exist the life-span short, and volume is big, and conversion rate is slow, the vice proper of fault localization difficulty.Obviously this has restricted the operation security of railway and the raising of transport capacity.
Summary of the invention
The objective of the invention is above-mentioned deficiency, provide a kind of employing microelectronics power device to replace relay, by the directly actuated railway signal foundation equipment intelligence contactless control setup of computer realization railway signal foundation equipment at prior art.
For achieving the above object, the intelligent contactless control setup of a kind of railway signal foundation equipment of the present invention is characterized in that: be provided with
Instruction input isolation circuit and industrial field bus communicating circuit, the instruction that upper computer is assigned enters computing machine via instruction input isolation circuit and industrial field bus communicating circuit;
Infrastructure device state isolation circuit is used for sending computing machine with the signal of infrastructure device state;
The buffer circuit of track circuit and track circuit, track circuit are used to detect the idle condition that accounts for car or track of track, and send computing machine by the buffer circuit of track circuit with information;
Computing machine, the input port of this computing machine connects the buffer circuit of above-mentioned instruction input isolation circuit, industrial field bus communicating circuit, infrastructure device state isolation circuit, track circuit respectively, and carry out logic determines according to input instruction and communication signal, by the delivery port output command, control contactless control setup;
The contactless control setup; detecting protective circuit by driving output and level shifting circuit, power output is formed; wherein drive output is connected computing machine with the level shifting circuit input end delivery port; the output that drives output and level shifting circuit detects protective circuit by power output and connects railway signal foundation equipment, according to the instruction control railway signal foundation equipment work of computing machine.
The intelligent contactless control setup of described railway signal foundation equipment, it is characterized in that: the driving output in this contactless control setup is made up of a plurality of photoelectric isolating circuit, its input end connects the corresponding delivery port of computing machine respectively, and the output of a plurality of photoelectric isolating circuits connects the corresponding input end that power output detects protective circuit respectively; This power output detects protective circuit and is made up of a plurality of contactless electronic switchs; the control end of each contactless electronic switch connects the corresponding delivery port of computing machine by above-mentioned photoelectric isolating circuit as the input end of power output detection protective circuit; each contactless electronic switch connects the corresponding input end of railway signal foundation equipment; instruction according to the different mouths of computing machine is switched on or switched off different contactless electronic switchs; further CONTROL RAILWAY SIGNAL infrastructure device action; the forward or reverse of switch machine, the break-make of unlike signal lamp.
The intelligent contactless control setup of described railway signal foundation equipment is characterized in that: described electronic switch is a power tube, and described power tube is transistor or field effect transistor or IGBT pipe, or thyristor.
The intelligent contactless control setup of described railway signal foundation equipment, it is characterized in that: in this contactless control setup, further also be provided with analog current treatment circuit and power tube at line detection circuit, this analog current treatment circuit is the current transducer that is serially connected in power tube emitter or the drain electrode, as diverter, Hall amplifier, in order to detect the working current of railway signal foundation equipment, its output connects computing machine; This power tube is the buffer circuit that is connected to the power tube two ends by resistance at line detection circuit, and whether be used for the detection power pipe intact, and its output connects computing machine.
The intelligent contactless control setup of described railway signal foundation equipment, it is characterized in that: this track circuit is made up of the two-way constant current source, wherein the output termination of one road constant current source is connected to the sampling resistor on the track section, the both end voltage of this sampling resistor connects the input of another road constant current source via active filter, the voltage at the above-mentioned sampling resistor two ends that this another road constant current source will detect is transformed into the magnitude of current through the V-I changer, send computing machine via buffer circuit again.
The intelligent contactless control setup of described railway signal foundation equipment, it is characterized in that: described constant current source is made up of reference voltage source, op amp and power transistor.
The invention has the advantages that:
Because railway signal foundation equipment of the present invention is data acquisition, processing and a logic determines of being finished communication, digital channel and analog channel by embedded computer, output control infrastructure device replaces relay control by the break-make of power microelectronic switch, has advantage low in energy consumption, that volume is little, the life-span is long, action is fast, therefore do not need the daily attention and the maintenance of picture relay assembly, save manpower greatly, reduced machine room area.Its remote communicating function is the complete computerizing of the railway system simultaneously, and networking is laid a good foundation.
This device collection command reception, information acquisition, logic determines, output control, telecommunication, fault localization are one, reach and need not safeguard that working stability is reliable, have improved railway operation safety and transport capacity.
For structure of the present invention, feature and effect thereof are had further understanding, enumerate specific embodiment now and be described with reference to the accompanying drawings as follows.
Description of drawings
Fig. 1 is the block scheme of the intelligent contactless control setup of railway signal foundation equipment of the present invention;
Fig. 2 is the physical circuit figure of contactless control setup;
Fig. 3 is the instruction flow chart that is stored in the computing machine of intelligent contactless control setup of Fig. 1 railway signal foundation equipment;
Fig. 4 is the physical circuit figure of the track circuit in the intelligent contactless control setup of railway signal foundation equipment of the present invention.
The specific embodiment
With reference to accompanying drawing, Fig. 1 is the circuit structure block scheme of the intelligent contactless control setup (hereinafter to be referred as control setup) of the present invention's railway signal foundation equipment of being used for railway signal foundation equipment (point machine, signal).As seen from the figure, control setup of the present invention mainly comprises: instruction input isolation circuit 1 and industrial field bus communicating circuit 9, described instruction input isolation circuit 1 is a photoelectric isolating circuit, and described industrial field bus communicating circuit 9 is that model is the CAN circuit of SJA1000; Infrastructure device state isolation circuit 2, described buffer circuit is a photoelectric isolating circuit, is used for sending computing machine after the Signal Spacing with the infrastructure device state; Track circuit and track circuit buffer circuit 11, track circuit are used to detect the idle condition that accounts for car or track of track, and send computing machine 4 by the track circuit buffer circuit with information; The input port of this computing machine (ECU) connects above-mentioned instruction input isolation circuit 1, industrial field bus communicating circuit 9, infrastructure device state isolation circuit 2, track circuit and buffer circuit 11 respectively, and carry out logic determines according to input instruction and communication signal, by the delivery port output command, control contactless control setup 12; This contactless control setup 12, its input end connects the delivery port of computing machine 4, its output connects railway signal foundation equipment 7, described railway signal foundation equipment 7 is meant point machine and signal, instruction control railway signal foundation equipment work according to computing machine, for convenience of description, be that example describes with the switch machine below.
Wherein, computing machine ECU is by embedded 8 or 16 micro controller systems, or the SOC micro controller system that has a jtag interface forms, and its model can be 80C592, or 80C196 or C8051F040 etc., the best constitutes the computer system ECU of the SOC micro controller system composition that has jtag interface.The instruction that upper computer is assigned is through instructing input and buffer circuit 1 and industrial field bus CAN communicating circuit 9 to enter computing machine ECU, and computing machine ECU carries out the opposite sex to these two kinds of instructions and judges.The status information of on-the-spot point machine is represented to wait as the position also to enter ECU through track switch state and buffer circuit 2, and account for car or the track clear information of track enter ECU through track circuit and buffer circuit 11 and carries out state recognition simultaneously.Whether the switch machine action command that upper computer is assigned is carried out, and is whether to be determined by switch machine state and track circuit free time.Have only switch machine normal, when track circuit is sent idle information, just allow to carry out the track switch action command.These conditions receive through the instruction redundancy of ECU, information acquisition, give contactless control setup 12 with the final output command of logic determines, this contactless control setup 12 is mainly formed (shown in Figure 2) by driving output and level shifting circuit 5 and power output detection protective circuit 6, driving output and level shifting circuit 5 is made up of a plurality of photoelectric isolating circuit, its input end connects the corresponding delivery port of computing machine respectively, and the output of a plurality of photoelectric isolating circuits connects the corresponding input end that power output detects protective circuit respectively; For switch machine, this driving output and level shifting circuit 5 are made up of two photoelectric isolating circuits, this is because the drive signal of switch machine has only two, promptly rotate and reverse, for signal, then should there be a plurality of outputs to control red, yellow, green, white signal lamp or its combination respectively.Its input end connects the corresponding delivery port of computing machine respectively, and the output of a plurality of photoelectric isolating circuits connects the corresponding input end that power output detects protective circuit 6 respectively; This power output detects protective circuit 6 and is made up of a plurality of contactless electronic switchs; equally; for switch machine; this contactless electronic switch also is to have two groups; the control end of each contactless electronic switch connects the corresponding delivery port of computing machine by above-mentioned driving output and level shifting circuit 5 (being photoelectric isolating circuit) as the input end of power output circuit; each contactless electronic switch connects the corresponding input end of railway signal foundation equipment; instruction according to the different mouths of computing machine is switched on or switched off different contactless electronic switchs; further CONTROL RAILWAY SIGNAL infrastructure device action; the forward or reverse of switch machine, the unlike signal lamp is (red; yellow; green; break-make in vain).Described electronic switch is the power tube switch, and described power tube switch is transistor switch, or fet switch or IGBT pipe or thyristor switch.
This contactless control setup 12 further also is provided with the detection protective circuit, comprising analog current treatment circuit 8 and power tube at line detection circuit 8 ', this analog current treatment circuit 8 is to be serially connected in power output to detect current transducer on the power tube power circuit (emitter, collecting electrode, drain electrode, source electrode) of protective circuit 6, as diverter, current transformer, Hall amplifier, in order to detect the working current of railway signal foundation equipment, its output connects computing machine; This power tube is to be connected to the buffer circuit that power output detects the power tube two ends of protective circuit 6 by resistance at line detection circuit 8 ', and whether be used for the detection power pipe intact, and its output connects computing machine, and described buffer circuit is a photoelectric isolating circuit.
Above-mentioned driving output and level shifting circuit 5 are isolated differential output (being pulse output sometimes) and are detected protective circuit 6 to power output, and the output that this power output detects protective circuit 6 is connected to on-the-spot railway signal foundation equipment one switch machine 7 through electric wire.Simultaneously, switch machine operation and static in the position of switch machine represent state and power tube whether normally deliver to computing machine ECU at line detection circuit 8 ' through track switch state and buffer circuit 2 and power tube.And the working current of switch machine 7 is handled and buffer circuit 8 through analog current, carries out the analog quantity dynamic acquisition, and send computing machine ECU, can depict the run curve of switch machine thus.Handle and buffer circuit 8 and power tube form closed loop at line detection circuit 8 ' by track switch state, equipment state and buffer circuit 2 and analog current, ECU just can be with the operating mode and the external line state of machine testing switch machine.For example, ECU does not send the action command of switch machine, and this moment, ECU detected current information, just determine power output tube at once and damage puncture, ECU just reports to the police immediately, and the driving power of rupturing capacity pipe, makes this control setup enter fault--safe condition, detect the switch machine state as computing machine ECU and change, just can judge loop line broken string or people for making the switch machine action.When ECU has sent the switch machine action command, and ECU detects less than the position of electric current or switch machine and represents not change, and then explanation drives switch machine outside line open circuit or et out of order, reports to the police immediately this moment, carries out fault handling.
Also have watchdog circuit 10 in the intelligent contactless control setup of railway signal foundation equipment of the present invention, computing machine ECU dynamically detects the operation of each road power supply and program, as program fleet, then through watchdog circuit 10 system is brought back to life.
By last surface analysis as can be known, the invention solves the many shortcoming of railway signal foundation equipment by the relay combination control, realized the intelligent contactless direct control of railway infrastructure device, surveyed morely, made this device meet fault one security doctrine of the railway system by few inspection.Because control setup of the present invention has the industrial field bus remote communicating function, for technical foundation has been established in complete computerizing, the networking of the railway system.
Intelligent contactless control setup CONTROL RAILWAY SIGNAL infrastructure device of the present invention has replaced traditional relay, has solved the inherent defect of relay assembly: function singleness, bulky, the fail safe ability, the handling failure time is long, the shortcoming that maintenance load is big.
Fig. 2 is the physical circuit figure of this contactless control setup 12, comprising driving output and level shifting circuit 5, power output detection protective circuit 6, switch machine 7, analog current processing and buffer circuit 8 and power tube at line detection circuit 8 '.Below contactless control setup 12 is elaborated.
The switch machine action command 1 or 2 that computing machine ECU 4 sends (switch machine forward or reverse) enters output and drives and level shifting circuit 5, it by two photoelectrical coupler D1, D2, corresponding resistor and or a D3 form.The output driving power output of output driving and level shifting circuit 5 detects the control utmost point of the power electronic switching IGBT assembly BG1-BG3 of protective circuit 6; correspondingly BG1, BG3 or BG2, BG3 conducting; be connected to the line bag of the forward or reverse motor of switch machine through cable, carry out differential output and make the switch machine operation.The analog current and the buffer circuit 8 that are serially connected in the drain electrode of BG3 are current transducer SEN (as diverter, current transformer, Hall amplifier), monitor the working current of switch machine by it, handle and buffer circuit 8 back production are handled to ECU by analog quantity.And the transition pipe that is attempted by the drain electrode of BG1-BG3 and the D10-D12 between source electrode carries out the afterflow protection.Principle of work is as follows: the switch machine action command 1 (just changeing) or the action command 2 (counter-rotating) that are sent through logic determines by ECU, export the control utmost point that power output detects IGBT pipe in the protective circuit 6 to through output driving and level shifting circuit 5, make BG1, BG3 or BG2, BG3 conducting or end, thereby for switch machine 7 provides controlled working current, this working current enters ECU monitoring processing through analog quantity processing and buffer circuit 8; Form the running state of closed loop Monitoring and Controlling switch machine.Power tube is photoisolator D4, D5, the D6 that is connected to the power tube two ends by resistance at line detection circuit 8 ', and whether be used for the detection power pipe intact.When computing machine not when output action instruction 1 and action command 2, BG1~BG3 all ends, not conducting of photoisolator D4~D6 this moment, and its output FKJC, DKJC and KHJC are high level.If this moment, power switch pipe damaged conducting, as the BG1 conducting, power supply DZ gets back to DF through D4, makes the D4 conducting, and it is exported it and is output as low level, and ECU reports to the police immediately.When instruction is rotated switch machine, just make BG1 and BG3 conducting if any action command 1 (just changeing), the equal conducting of D4 and D6 at this moment, making DKJC and KHJC is low level, if this moment DKJC and KHJC be high level, just show that BG1 or not conducting of BG3 damage.From the above mentioned, ECU is with regard to the mode of operation of the online detection power switching valve of energy.Device for power switching of the present invention also can be made of power MOS pipe, control silicon assembly or power transistor except that adopting the IGBT device.
Above-mentioned driving output and level shifting circuit 5 are by photoelectrical coupler, perhaps DC-DC conv, perhaps op amp formation.
Fig. 3 is the control flow chart of point machine of the present invention.The procedure operation of flowcharting is to be finished by Flash in the PSD chip that is contained in advance among the computing machine ECU or the programming instruction among the EPOM.Each step in diagram of circuit can comprise one or more functions in the program that reality is carried out.
With reference to Fig. 3, it discloses program main flow that the present invention is used for the point machine control setup.This program is mainly finished three tasks: the one, gather various information in real time, as instruction input among Fig. 1 and buffer circuit 1, track switch state, equipment state and buffer circuit 2, power supply and testing circuit 3, the information that analog current handles and buffer circuit 8, power tube enter ECU at line detection circuit 8 ', industrial field bus communicating circuit 9 and track circuit and buffer circuit 11; The 2nd, start or stop the operation switch machine and realize contactless control; The 3rd, the static and dynamic all kinds of failure message of real-time judge, and teletransmission makes switch machine enter the fail safe state to the person-machine dialogue interface of upper computer simultaneously.
The diagram of circuit indication of Fig. 3 is after beginning step 100, and step 101 is carried out resource and file initialization.Step 102 timing acquiring various information, so that judge whether switch machine is normal, be judged as negates then to enter fault handling, promptly enter step 104, rupturing capacity delivery pipe power supply enters step 105 warning then and handles, and failure message is transferred to the person-machine dialogue picture of upper computer by communication, and the warning of sounding, notify the relevant personnel to carry out trouble-shooting and handle.If trouble free, then enter step 106 or 108, carry out the action command of switch machine and judge, and this instruction judges that the instruction that is based on digital channel and communication channel checks decision mutually.Just enter step 115 or 110 when simultaneously the necessary condition of determining step 107 or 109 switch machine running such as system separate locking and track clear, start the switch machine operation.Step 116-120 and step 111-114 and 121 are switch machine shutdown Rule of judgment in service.Certainly this also is the main program that the present invention is used for switch machine control, and its program step is to handle according to the correlation technique standard and the technical requirements of the Ministry of Railways fully, and particularly the fail safe program is particularly important.
From the above mentioned, control to railway signal foundation equipment-switch machine, signal replaces relay control by intelligent contactless control setup, but the operation of these equipment is all closely related with track circuit, and the track circuit that uses now is made up of through the track relay line bag of connecting a voltage source, line Bao Dedian picks up and is that track clear, dead electricity fall and makes its contacting voltage signal be judged to track section to account for car.But because on line is long, railway roadbed leaks and track relay mistake dead electricity is fallen and accounts for car, needs to adjust power supply voltage this moment, leaks too greatly because of sleet sky railway roadbed sometimes, makes whole to paralyse.At these shortcomings, track circuit among Fig. 1 of the present invention and buffer circuit 11 are a kind of novel electron track circuits, it solved the two-region section and because of railway roadbed leak can on-line automatic adjustment electronic track circuit, finish the state recognition of track circuit, and have remote communicating function.Fig. 4 provides the schematic diagram of this novel track circuit in detail.
This track circuit of the present invention mainly is to use the constant current source principle, and constant current is fed on the track section rail, and what this was different from the use of relay track circuit is voltage source, so the length of feed lines no longer is a principal element.Section two resistance in serial connection two-region form current return on track section, by the compartment on track section wheel these two section resistance of short circuit are respectively produced different voltage, promptly produce track DG, DG1 and idle voltage, this voltage is through the V-I changer, the sampling resistor that the electric current of corresponding states is delivered in the control cabin through long line produces cooresponding voltage, enter ECU through the simulation isolation and handle, finish identification the track circuit state.
Fig. 4 is the schematic diagram of novel track circuit of the present invention.Electric main enters power supply processing circuit 20 through lightning protection component, it produces the two-way direct voltage source: the reference voltage that the reference voltage source 21 of leading up to obtains, and by the big minor adjustment of resistor 23 or the reference voltage of adjustment reference voltage source 21, make op amp 22 and expand current circuit to produce required constant current, be fed on the track section 25 through serial connection stabilivolt 24.For the track circuit of two-region section, serial connection Power Resistor 33,34 on two sections rail of non-conductive.Compartment wheel is when being traveling on the track section 25, can be respectively short circuit resistance 33 or 34 and produce two sections voltage sources, the gait of march in the time that also can be by producing two sections voltages and the length computation compartment of track section, for car retarder provides a kind of condition that tests the speed, no compartment is when this track section, and constant current is flowed through and produced the idle voltage value on resistor 33 and 34.Its voltage swing is through the V-I changer of the active filter label 27 of label 26, and the power supply of above-mentioned two kinds of circuit is another road direct voltage source that label 20 produces.Size of current when the value of adjusting the resistor of label 28 can obtain to account for car state and free time on the track section, this electric current is that 29 stabilivolt is isolated the sampling resistor of delivering to label 30 and produced corresponding voltage value through the serial connection label, send into ECU through the buffer circuit of label 31 and the filter circuit of label 32, carry out track section and account for car and idle logic determines.Along with railway roadbed leaks and shunts, only need to judge that through the communication channel online modification track section accounts for car, the basic Huaihe River value of free time.The false judgment that has solved state variation in the track section use effectively and caused is judged in this dynamic sampling.If label 33 resistor short circuits in the label 25 then become single section and account for car and idle track circuit.
Filtering and V-I translation circuit that the constant current of above-mentioned label 22 produces circuit and label 26,27 are made of op amp, and its some stream output is made of power triode or power MOS pipe, and label 24 and label 29 are made of stabilivolt or diode.
In a word, the present invention is the control setup of an employing embedded computer and contactless direct control railway signal foundation equipment, its collection command reception, information acquisition, logic determines, control output, fault localization, telecommunication are one, effectively solve many shortcomings of existing railway infrastructure device relay control, improved the operation security and the transport capacity of railway greatly.
Claims (7)
1, a kind of intelligent contactless control setup of railway signal foundation equipment is characterized in that: be provided with
Instruction input isolation circuit and industrial field bus communicating circuit, the instruction that upper computer is assigned enters computing machine via instruction input isolation circuit and industrial field bus communicating circuit;
Infrastructure device state isolation circuit is used for sending computing machine with the signal of infrastructure device state;
The buffer circuit of track circuit and track circuit, track circuit are used to detect the idle condition that accounts for car or track of track, and send computing machine by the buffer circuit of track circuit with information;
Computing machine, the input port of this computing machine connects the buffer circuit of above-mentioned instruction input isolation circuit, industrial field bus communicating circuit, infrastructure device state isolation circuit, track circuit respectively, and carry out logic determines according to input instruction and communication signal, by the delivery port output command, control contactless control setup;
The contactless control setup; detecting protective circuit by driving output and level shifting circuit, power output is formed; wherein drive output is connected computing machine with the level shifting circuit input end delivery port; the output that drives output and level shifting circuit detects protective circuit by power output and connects railway signal foundation equipment, according to the instruction control railway signal foundation equipment work of computing machine.
2, the intelligent contactless control setup of railway signal foundation equipment according to claim 1, it is characterized in that: the driving output in this contactless control setup is made up of a plurality of photoelectric isolating circuit, its input end connects the corresponding delivery port of computing machine respectively, and the output of a plurality of photoelectric isolating circuits connects the corresponding input end that power output detects protective circuit respectively; This power output detects protective circuit and is made up of a plurality of contactless electronic switchs; the control end of each contactless electronic switch connects the corresponding delivery port of computing machine by above-mentioned photoelectric isolating circuit as the input end of power output detection protective circuit; each contactless electronic switch connects the corresponding input end of railway signal foundation equipment; instruction according to the different mouths of computing machine is switched on or switched off different contactless electronic switchs; further CONTROL RAILWAY SIGNAL infrastructure device action; the forward or reverse of switch machine, the break-make of unlike signal lamp.
3, the intelligent contactless control setup of railway signal foundation equipment according to claim 2, it is characterized in that: described electronic switch is a power tube, and described power tube is transistor or field effect transistor or IGBT pipe, or thyristor.
4, the intelligent contactless control setup of railway signal foundation equipment according to claim 3, it is characterized in that: in this contactless control setup, further also be provided with analog current treatment circuit and power tube at line detection circuit, this analog current treatment circuit is the current transducer that is serially connected in power tube emitter or the drain electrode, in order to detect the working current of railway signal foundation equipment, its output connects computing machine; This power tube is the buffer circuit that is connected to the power tube two ends by resistance at line detection circuit, and whether be used for the detection power pipe intact, and its output connects computing machine.
5, the intelligent contactless control setup of railway signal foundation equipment according to claim 1, it is characterized in that: this track circuit is made up of the two-way constant current source, wherein the output termination of one road constant current source is connected to the sampling resistor on the track section, the both end voltage of this sampling resistor connects the input of another road constant current source via active filter, the voltage at the above-mentioned sampling resistor two ends that this another road constant current source will detect is transformed into the magnitude of current through the V-I changer, send computing machine via buffer circuit again.
6, the intelligent contactless control setup of railway signal foundation equipment according to claim 5, it is characterized in that: described constant current source is made up of reference voltage source, op amp and power transistor.
7, the intelligent contactless control setup of railway signal foundation equipment according to claim 4 is characterized in that: described current transducer is diverter or Hall amplifier.
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CNB2004100316903A CN1326734C (en) | 2004-04-13 | 2004-04-13 | Intelligent contactless control device in basic equipment of railway signal |
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CN102167062B (en) * | 2011-04-13 | 2013-01-02 | 中铁四局集团电气化工程有限公司 | Railway signal turnout operation box |
JP6435250B2 (en) * | 2015-10-05 | 2018-12-05 | 株式会社京三製作所 | Contact input control device |
CN107065823B (en) * | 2017-01-22 | 2019-07-09 | 诸暨市火鸟工业设计工作室 | A kind of train control system driving licensed operational instruction streaming storage device |
CN110422203A (en) * | 2019-07-23 | 2019-11-08 | 黑龙江瑞兴科技股份有限公司 | A kind of communication code non-insulated track circuit equipment based on contactless |
CN110751874B (en) * | 2019-12-10 | 2021-09-10 | 郑州爱普锐科技有限公司 | Switch machine training system |
CN113064395B (en) * | 2021-06-03 | 2021-09-07 | 北京全路通信信号研究设计院集团有限公司 | Digital implementation system for track circuit adjustment configuration process |
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