CN117389201B - Branching collector and collecting method - Google Patents
Branching collector and collecting method Download PDFInfo
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- CN117389201B CN117389201B CN202311687911.1A CN202311687911A CN117389201B CN 117389201 B CN117389201 B CN 117389201B CN 202311687911 A CN202311687911 A CN 202311687911A CN 117389201 B CN117389201 B CN 117389201B
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- 238000000034 method Methods 0.000 title claims abstract description 26
- 238000002955 isolation Methods 0.000 claims abstract description 71
- 238000012545 processing Methods 0.000 claims abstract description 45
- 238000012423 maintenance Methods 0.000 claims description 13
- 230000008569 process Effects 0.000 claims description 10
- 238000004458 analytical method Methods 0.000 claims description 9
- 238000005259 measurement Methods 0.000 claims description 4
- 230000007797 corrosion Effects 0.000 claims description 3
- 238000005260 corrosion Methods 0.000 claims description 3
- 238000004880 explosion Methods 0.000 claims description 3
- 238000012544 monitoring process Methods 0.000 abstract description 20
- 238000013480 data collection Methods 0.000 abstract description 5
- 230000002441 reversible effect Effects 0.000 description 16
- 230000000087 stabilizing effect Effects 0.000 description 8
- 238000004804 winding Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 230000003287 optical effect Effects 0.000 description 4
- 230000009467 reduction Effects 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 3
- 230000001276 controlling effect Effects 0.000 description 3
- 230000001105 regulatory effect Effects 0.000 description 3
- 238000004148 unit process Methods 0.000 description 3
- 230000002159 abnormal effect Effects 0.000 description 2
- 239000003990 capacitor Substances 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000011664 signaling Effects 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000003745 diagnosis Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000005693 optoelectronics Effects 0.000 description 1
- 230000003449 preventive effect Effects 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
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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
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/28—Testing of electronic circuits, e.g. by signal tracer
- G01R31/282—Testing of electronic circuits specially adapted for particular applications not provided for elsewhere
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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
- G05B2219/24215—Scada supervisory control and data acquisition
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Abstract
A branching collector and a collecting method belong to the field of track circuit monitoring operation. The invention aims to improve the reliability and stability of data acquisition of voltage, current, frequency, state and the like of ZPW-2000R type uninsulated track circuit equipment. The invention comprises a photoelectric isolation circuit, an input isolation circuit, a comparator, a direct current bias circuit, a digital quantity collector, an analog quantity collector and a central processing unit, wherein the photoelectric isolation circuit is connected with the digital quantity collector, the input isolation circuit is connected with the digital quantity collector through the comparator, the input isolation circuit and the direct current bias circuit are both connected with the analog quantity collector, and the digital quantity collector and the analog quantity collector are respectively connected with the central processing unit. The invention can realize the reliable collection of the voltage, current, frequency, state and other data collection of the ZPW-2000R type uninsulated track circuit equipment, and provide data support for the safe and stable operation of the equipment.
Description
Technical Field
The invention relates to a branching collector, and belongs to the technical field of track circuit monitoring.
Background
The ZPW-2000R type uninsulated frequency shift track circuit device is a signal device used on a railway track. It is commonly used in railway traffic systems for controlling the running and stopping of trains, as well as monitoring the status of the track. This type of equipment is part of a railway signaling system. In particular, ZPW-2000R uninsulated frequency shift rail circuit devices may be used to monitor train position on a rail, rail occupancy information, and to control signal lights and signaling devices while the train is running. The system can monitor the state of the track in real time and transmit corresponding signals to the train so as to ensure the safe running of the train. One of the main features of frequency shift track circuit devices is the use of non-insulated track circuit technology that can effectively monitor train position and status information on the track without actually providing insulated contacts on the track. Such techniques allow for more flexible and accurate signal transmission. In general, ZPW-2000R type uninsulated frequency shift track circuit equipment is an important equipment used in railway signal systems, plays an important role in railway transportation and ensures the safety and smoothness in the running process of trains.
In the running process of the ZPW-2000R type uninsulated frequency-shift track circuit equipment, the data such as voltage, current, frequency and working state of unit equipment such as a receiver, a transmitter, a power amplifier and the like in the ZPW-2000R type uninsulated track circuit equipment are required to be collected in real time, and the collected data are mainly used for: (1) Performance monitoring, by collecting the data, the performance of the equipment can be monitored in real time, and abnormal conditions such as over-high or under-low voltage, abnormal current, frequency deviation and the like in the running of the equipment can be found in time. (2) The fault diagnosis, the monitoring of the voltage, current, frequency and other data of the equipment can help engineers diagnose whether the equipment has faults or not and can help locate the problem. (3) Preventive maintenance, by monitoring equipment status data, can be performed, potential problems are discovered and maintenance is performed in advance, thereby reducing downtime due to equipment failure. (4) The data can also be used for establishing a remote monitoring system so that an operator can remotely monitor the working state of the equipment, know the running condition of the equipment in time and take corresponding measures. (5) And (3) analyzing data, wherein the data are very important for long-term performance analysis of the equipment, and analyzing historical data to know the running condition and the energy consumption condition of the equipment and make a reasonable maintenance plan and an equipment updating plan. (6) Compliance with regulatory requirements, in some cases, regulatory or standard requirements monitor such data to ensure compliance of the device with corresponding regulatory requirements.
The existing branching collectors at present have relatively single functions, for example: patent publication number is CN103558794B, and disclosed a separated time collector, this separated time collector gathers sending end and receiving end through signal acquisition unit and moves frequency signal and pulse signal to carry out digital to analog conversion and handle for digital signal processor, finally send to track circuit maintenance terminal, this kind of separated time collector is though can gather the frequency signal, nevertheless its shortcoming lies in: (1) The acquisition function is single, and the synchronous acquisition of the voltage, current, frequency, state and other data of the unit equipment such as a receiver, a transmitter, a power amplifier and the like in the ZPW-2000R type non-insulated track circuit equipment cannot be satisfied. (2) The branching collector needs to be matched with other voltage and current collecting currents to realize voltage and current data collection in ZPW-2000R type non-insulated track circuit equipment.
In view of the foregoing, it is desirable to provide a collector for realizing data such as voltage, current, frequency and state of ZPW-2000R type non-insulated track circuit device, ensuring safe and stable operation of the device, reducing risk of failure, and improving reliability and operation efficiency of the device.
Disclosure of Invention
The present invention is directed to solving the above-mentioned technical problems. The following presents a simplified summary of the invention in order to provide a basic understanding of some aspects of the invention. It should be understood that this summary is not an exhaustive overview of the invention. It is not intended to identify key or critical elements of the invention or to delineate the scope of the invention.
The technical scheme adopted by the invention for solving the technical problems is as follows:
the branching collector comprises a photoelectric isolation circuit, an input isolation circuit, a comparator, a direct current bias circuit, a digital quantity collector, an analog quantity collector and a central processing unit, wherein the photoelectric isolation circuit is connected with the digital quantity collector, the input isolation circuit is connected with the digital quantity collector through the comparator, the input isolation circuit and the direct current bias circuit are both connected with the analog quantity collector, and the digital quantity collector and the analog quantity collector are respectively connected with the central processing unit;
the photoelectric isolation circuit receives the switching value signal, the low-frequency signal and the address coding signal, isolates the switching value signal, the low-frequency signal and the address coding signal and sends the signals to the digital quantity collector;
the input isolation circuit receives the power-out voltage signal to perform isolation voltage reduction, and is overlapped with the direct-current bias signal of the direct-current bias circuit and then sent to the analog quantity collector;
the input isolation circuit isolates the power-out voltage signals after the voltage reduction and sends the power-out voltage signals to the comparator, the comparator sequentially arranges the power-out voltage signals, and then outputs the power-out voltage signals to the digital quantity collector;
the digital quantity collector converts the switching value signal, the low-frequency signal, the address coding signal and the power-out voltage signal into switching value data, low-frequency data, address coding data and power-out voltage data and then transmits the switching value data, the low-frequency data, the address coding data and the power-out voltage data to the central processor;
the analog quantity collector converts the power-out voltage signal into digital power-out voltage data and transmits the digital power-out voltage data to the central processing unit;
the central processing unit processes and calculates the switching value data, the low-frequency data, the address coding data and the power output voltage data transmitted by the digital quantity collector and the analog quantity collector, and finally the processed data result is transmitted to the track circuit maintenance terminal through the CAN bus to provide reference data for the track circuit maintenance terminal.
Preferably: the display control logic unit is respectively connected with the digital quantity collector and the display driving unit, and the panel indicating lamp is connected with the display driving unit.
Preferably: the photoelectric isolation circuit comprises a switching value isolation circuit, a low-frequency isolation circuit and an address coding isolation circuit.
Preferably: the switching value isolation circuit comprises a reverse protection diode D3, a first resistor R1, a second resistor R2, a third resistor R3, a first triode QR1, a second triode QR2, a voltage stabilizing diode D2 and an optocoupler module V1, a switching value signal is connected with the anode of the reverse protection diode D3, the cathode of the reverse protection diode D3 is connected with the emitter of the second triode QR2, the second resistor R2 is connected between the base and the emitter of the second triode QR2, the first resistor R1 is connected between the base and the collector of the first triode QR1, the emitter of the first triode QR1 is connected with the base of the second triode QR2, the cathode of the voltage stabilizing diode D2 is connected with the collector of the first triode QR1, the anode of the voltage stabilizing diode D2 is connected with the emitting end of the optocoupler module V1, the receiving end of the optocoupler module V1 is connected with the result output end, and the third resistor R3 is connected between the receiving end of the optocoupler module V1 and the ground.
The model of the optocoupler module V1 is as follows: PC817, the optical coupler module V1 includes transmitting end and receiving end, the positive pole of the light-emitting diode of the transmitting end couples to positive pole of the zener diode D2, the negative pole of the light-emitting diode of the transmitting end couples to earthing terminal of the input, the receiving end of the optical coupler module V1 couples to result output end of the switching value;
the reverse protection diode D3 protects the switching value signal input and the ground from damaging the circuit, the second resistor R2 and the second triode QR2 can be used for keeping constant the input current in the circuit, the circuit formed by the first triode QR1, the first resistor R1 and the voltage stabilizing diode D2 is used for controlling the threshold voltage so as to achieve the voltage signal condition of circuit opening, the optocoupler module V1 is used for isolating an external input signal and an internal control signal, and the internal circuit damage caused by the external input signal interference and external faults is avoided.
Preferably: the low-frequency isolation circuit comprises a first operational amplifier IC1, a second operational amplifier IC2 and a current transformer T1, wherein a low-frequency signal is connected with the reverse input end of the first operational amplifier IC1 through a fourth resistor R4, the reverse input end and the output end of the first operational amplifier IC1 are connected with a fifth resistor R5, the output end of the first operational amplifier IC1 is connected with one end of a primary winding of the current transformer T1 through a sixth resistor R6, the other end of the primary winding of the current transformer T1 is connected with the same-direction input end of the first operational amplifier IC1, two ends of a secondary winding of the current transformer T1 are respectively connected with the reverse input end and the same-direction input end of the second operational amplifier IC2, the output end of the second operational amplifier IC2 outputs the low-frequency signal, the reverse input end and the output end of the second operational amplifier IC2 are connected with a seventh resistor R7, and two ends of the seventh resistor R7 are connected with a first capacitor C1 in parallel.
The low-frequency signal generates driving current through the operational amplifier of the first operational amplifier IC1, the driving current is isolated and transmitted through the current converter T1, the driving current is converted and restored through the second operational amplifier IC2 to be output, and the isolated low-frequency signal is output.
Preferably: the model of the address coding isolation circuit is as follows: TLP521-4.
Preferably: the input isolation circuit is of the following type: SI8931.
Preferably: and the central processing unit processes the switching value data, the low-frequency data, the address coding data and the power output voltage data transmitted by the digital quantity collector and the analog quantity collector, and transmits the data result obtained by calculation to the monitoring cloud platform.
Preferably: and the monitoring cloud platform packages the data results processed and calculated by the central processing unit to form a master data display unit, and mirrors the master data display unit to generate a plurality of sub data display units.
The sub-data display unit and the main data display unit are used for storing the switching value data, the low-frequency data, the address coding data and the power-out voltage data of the ZPW-2000R type non-insulated track circuit equipment which are processed and calculated by the central processing unit, and when the acquisition repeater of the main control node (railway signal control terminal system) requires to call the data processed by the central processing unit, the monitoring cloud platform transmits the sub-data display unit generated by the mirror image to the main control node;
the monitoring cloud platform mirrors the mother data display unit to generate a plurality of child data display units, which has the functions that: when the main control node needs to perform further operation analysis, establishment of reasonable equipment maintenance plan, equipment updating, equipment early warning analysis, digital derivative analysis and the like on the data processed by the central processing unit, the data processed by the central processing unit needs to be rewritten, at the moment, each sub-data display unit generated by the monitoring cloud platform mirroring the main data display unit can independently read and write, change switching value data, low-frequency data, address coding data and power output voltage data in the sub-data display unit, and each sub-data display unit is not affected by each other. In this way, the time for deploying the cloud platform required for the master control node (railway signal control terminal system) to retrieve the data stored in the monitoring cloud platform according to different functional requirements is greatly saved.
The acquisition method of the branching acquisition device is realized based on the branching acquisition device and comprises the following steps:
step 1, installing a branching collector in a cabinet of ZPW-2000R type non-insulated track circuit equipment;
step 2, ensuring that the working environment of the distribution line collector in the cabinet meets the following requirements:
1. the air temperature is minus 5 ℃ to plus 40 ℃;
2. relative humidity of air: not more than 85%;
3. atmospheric pressure: 70.1kPa to 106.2kPa;
4. the equipment is located in the cabinet and vibrates: 10 Hz-200 Hz;
5. the periphery of the branching collector is free from corrosion and harmful gas causing explosion danger;
step 3, connecting signal data of ZPW-2000R type non-insulated track circuit equipment to be acquired with a photoelectric isolation circuit and an input isolation circuit through a serial interface respectively, receiving switching value signals, low-frequency signals and address coding signals by using the photoelectric isolation circuit, and receiving power-out voltage signals by using the input isolation circuit;
step 4, the photoelectric isolation circuit receives the switching value signal, the low-frequency signal and the address coding signal, isolates the switching value signal, sends the switching value signal, the low-frequency signal and the address coding signal to the digital quantity collector, and the input isolation circuit receives the power output voltage signal, isolates and reduces the voltage, and then superimposes the power output voltage signal with the direct current bias signal of the direct current bias circuit, and then sends the superimposed power output voltage signal to the analog quantity collector, and the power output voltage signal isolated and reduced by the input isolation circuit is also sent to the comparator, and the comparator sequentially arranges the power output voltage signals and then outputs the power output voltage signal to the digital quantity collector;
step 5, the digital quantity collector converts the switching value signal, the low-frequency signal, the address coding signal and the power output voltage signal into switching value data, low-frequency data, address coding data and power output voltage data and then transmits the switching value data, the low-frequency data, the address coding data and the power output voltage data to the central processing unit, and the analog quantity collector converts the power output voltage signal into power output voltage data in a digital form and then transmits the power output voltage data to the central processing unit;
and 6, the central processing unit processes and calculates the switching value data, the low-frequency data, the address coding data and the power-out voltage data transmitted by the digital quantity collector and the analog quantity collector, and finally the processed data result is transmitted to the track circuit maintenance terminal.
The invention has the beneficial effects that:
1. the branching collector can collect data such as voltage, current, frequency and state of unit equipment such as a receiver, a transmitter, a power amplifier and the like in ZPW-2000R type non-insulated track circuit equipment, is beneficial to ensuring safe and stable operation of the equipment, reduces fault risk and improves reliability and operation efficiency of the equipment.
2. The branching collector disclosed by the invention is simple in structure, can realize multichannel high-precision and rapid data collection of voltage, current, frequency, state and the like of ZPW-2000R type uninsulated track circuit equipment, can rapidly complete equipment fault data collection, can accurately realize data collection and post-collection treatment, and provides support for normal operation of a system.
Drawings
FIG. 1 is a block diagram of a wire harness collector of the present invention;
FIG. 2 is a circuit diagram of a switching value isolation circuit;
FIG. 3 is a circuit diagram of a low frequency isolation circuit;
FIG. 4 is a block diagram of a four-way junction collector in accordance with an embodiment of the present invention;
in the figure, a 1-photoelectric isolation circuit, a 2-input isolation circuit, a 3-comparator, a 4-direct current bias circuit, a 5-digital quantity collector, a 6-analog quantity collector, a 7-central processing unit, an 8-display control logic unit, a 9-display driving unit, a 10-panel indicator lamp, an 11-CAN bus, a 12-monitoring cloud platform, a 13-master data display unit, a 14-sub data display unit and a 15-acquisition repeater.
Detailed Description
The present invention is further illustrated below in conjunction with specific embodiments, it being understood that these embodiments are meant to be illustrative of the invention only and not limiting the scope of the invention, and that modifications of the invention, which are equivalent to those skilled in the art to which the invention pertains, will fall within the scope of the invention as defined in the claims appended hereto.
Detailed description of the preferred embodiments
Referring to fig. 1-4 of the accompanying drawings of the specification, the present embodiment discloses a branching collector, which comprises a photoelectric isolation circuit 1, an input isolation circuit 2, a comparator 3, a direct current bias circuit 4, a digital quantity collector 5, an analog quantity collector 6 and a central processing unit 7, wherein the photoelectric isolation circuit 1 is connected with the digital quantity collector 5, the input isolation circuit 2 is connected with the digital quantity collector 5 through the comparator 3, the input isolation circuit 2 and the direct current bias circuit 4 are both connected with the analog quantity collector 6, and the digital quantity collector 5 and the analog quantity collector 6 are respectively connected with the central processing unit 7;
the photoelectric isolation circuit 1 receives the switching value signal, the low-frequency signal and the address coding signal, isolates the switching value signal, the low-frequency signal and the address coding signal and sends the signals to the digital quantity collector 5;
the input isolation circuit 2 receives the power-out voltage signal to perform isolation voltage reduction, and is overlapped with the direct-current bias signal of the direct-current bias circuit 4 and then sent to the analog quantity collector 6;
the input isolation circuit 2 isolates the power-out voltage signals after the voltage reduction and sends the power-out voltage signals to the comparator 3, the comparator 3 sequentially arranges the power-out voltage signals, and then outputs the power-out voltage signals to the digital quantity collector 5;
the digital quantity collector 5 converts the switching value signal, the low-frequency signal, the address coding signal and the power-out voltage signal into switching value data, low-frequency data, address coding data and power-out voltage data and then transmits the switching value data, the low-frequency data, the address coding data and the power-out voltage data to the central processor 7;
the analog quantity collector 6 converts the power-out voltage signal into digital power-out voltage data and transmits the digital power-out voltage data to the central processing unit 7;
the central processing unit 7 processes and calculates the switching value data, the low-frequency data, the address coding data and the power-out voltage data transmitted by the digital quantity collector 5 and the analog quantity collector 6, and the finally processed data result is transmitted to the track circuit maintenance terminal through the CAN bus 11 to provide reference data for the track circuit maintenance terminal.
Detailed description of the preferred embodiments
Referring to fig. 1-4 of the drawings, the present embodiment discloses a branching collector, further including a display control logic unit 8, a display driving unit 9, and a panel indicator lamp 10, where the display control logic unit 8 is connected with the digital quantity collector 5 and the display driving unit 9, and the panel indicator lamp 10 is connected with the display driving unit 9. So configured, the digital quantity collector 5 converts the switching value signal, the low frequency signal, the address code signal and the power output voltage signal into switching value data, low frequency data, address code data and power output voltage data, and then inputs the switching value data, the low frequency data, the address code data and the power output voltage data to the display control logic unit 8, alarm conditions can be set and triggered in the display control logic unit 8, when the switching value data, the low frequency data, the address code data and the power output voltage data obtained after the processing of the digital quantity collector 5 exceed a predetermined range or threshold value, the display control logic unit 8 triggers an alarm signal and sends the alarm signal to the display driving unit 9, the display driving unit 9 converts the alarm signal into a format suitable for display, and finally drives the panel indicator 10 to perform alarm display, for example: and displaying the normal operation and equipment fault state of the equipment through the combination of the red light, the yellow light and the green light.
Detailed description of the preferred embodiments
Referring to fig. 1 to fig. 4 of the drawings, the present embodiment discloses a branching collector, where the optoelectronic isolation circuit 1 includes a switching value isolation circuit, a low frequency isolation circuit, and an address coding isolation circuit;
the switching value isolation circuit comprises a reverse protection diode D3, a first resistor R1, a second resistor R2, a third resistor R3, a first triode QR1, a second triode QR2, a voltage stabilizing diode D2 and an optocoupler module V1, a switching value signal is connected with the anode of the reverse protection diode D3, the cathode of the reverse protection diode D3 is connected with the emitter of the second triode QR2, the second resistor R2 is connected between the base and the emitter of the second triode QR2, the first resistor R1 is connected between the base and the collector of the first triode QR1, the emitter of the first triode QR1 is connected with the base of the second triode QR2, the cathode of the voltage stabilizing diode D2 is connected with the collector of the first triode QR1, the anode of the voltage stabilizing diode D2 is connected with the emitting end of the optocoupler module V1, the receiving end of the optocoupler module V1 is connected with the result output end, and the third resistor R3 is connected between the receiving end of the optocoupler module V1 and the ground.
The model of the optocoupler module V1 is as follows: PC817, the optical coupler module V1 includes transmitting end and receiving end, the positive pole of the light-emitting diode of the transmitting end couples to positive pole of the zener diode D2, the negative pole of the light-emitting diode of the transmitting end couples to earthing terminal of the input, the receiving end of the optical coupler module V1 couples to result output end of the switching value;
the reverse protection diode D3 protects the switching value signal input and the ground from damaging the circuit, the second resistor R2 and the second triode QR2 can be used for keeping constant the input current in the circuit, the circuit formed by the first triode QR1, the first resistor R1 and the voltage stabilizing diode D2 is used for controlling the threshold voltage so as to achieve the voltage signal condition of circuit opening, the optocoupler module V1 is used for isolating an external input signal and an internal control signal, and the internal circuit damage caused by the external input signal interference and external faults is avoided.
The low-frequency isolation circuit comprises a first operational amplifier IC1, a second operational amplifier IC2 and a current transformer T1, wherein a low-frequency signal is connected with the reverse input end of the first operational amplifier IC1 through a fourth resistor R4, the reverse input end and the output end of the first operational amplifier IC1 are connected with a fifth resistor R5, the output end of the first operational amplifier IC1 is connected with one end of a primary winding of the current transformer T1 through a sixth resistor R6, the other end of the primary winding of the current transformer T1 is connected with the same-direction input end of the first operational amplifier IC1, two ends of a secondary winding of the current transformer T1 are respectively connected with the reverse input end and the same-direction input end of the second operational amplifier IC2, the output end of the second operational amplifier IC2 outputs the low-frequency signal, the reverse input end and the output end of the second operational amplifier IC2 are connected with a seventh resistor R7, and two ends of the seventh resistor R7 are connected with a first capacitor C1 in parallel.
The low-frequency signal generates driving current through the operational amplifier of the first operational amplifier IC1, the driving current is isolated and transmitted through the current converter T1, the driving current is converted and restored through the second operational amplifier IC2 to be output, and the isolated low-frequency signal is output.
The model of the address coding isolation circuit is as follows: TLP521-4.
The input isolation circuit 2 has the following model: SI8931, manufacturer of which is Silicon Labs.
Detailed description of the preferred embodiments
Referring to fig. 1 to fig. 4 of the drawings, in this embodiment, the present embodiment discloses a branching collector, where the cpu 7 processes the switching value data, the low frequency data, the address coding data, and the power output voltage data transmitted by the digital quantity collector 5 and the analog quantity collector 6, and transmits the calculated data result to the monitoring cloud platform 12.
The monitoring cloud platform 12 encapsulates the data result processed and calculated by the central processing unit 7 to form a master data display unit 13, and mirrors the master data display unit 13 to generate a plurality of sub data display units 14.
The sub data display unit 14 and the main data display unit 13 are used for storing the calculated switching value data, low-frequency data, address coding data and power-out voltage data of the ZPW-2000R type non-insulated track circuit equipment processed by the central processing unit 7, and when the acquisition relay 15 of the main control node (railway signal control terminal system) requests to call the data processed by the central processing unit 7, the monitoring cloud platform 12 transmits the sub data display unit 14 generated by the mirror image to the main control node;
the monitoring cloud platform 12 mirrors the parent data display unit 13 to generate a plurality of child data display units 14, which function as: when the master control node needs to perform further operation analysis, making a reasonable equipment maintenance plan, equipment updating, equipment early warning analysis, digital derivative analysis and the like on the data processed by the central processing unit 7, the data processed by the central processing unit 7 needs to be rewritten, at this time, each sub-data display unit 14 generated by mirroring the master data display unit 13 by the monitoring cloud platform 12 can independently read and write, change switching value data, low-frequency data, address coding data and power-out voltage data in the sub-data display unit 14, and each sub-data display unit 14 is not affected by each other. This saves a lot of time in the deployment of the cloud platform when the master control node (railway signal control terminal system) invokes the data stored in the monitoring cloud platform 12 for different functional needs.
Detailed description of the preferred embodiments
Referring to fig. 1 to fig. 4 of the drawings, the present embodiment discloses a method for collecting a branching collector, which is implemented based on any one of the first embodiment to the fourth embodiment, and includes the following steps:
step 1, installing a branching collector in a cabinet of ZPW-2000R type non-insulated track circuit equipment;
step 2, ensuring that the working environment of the distribution line collector in the cabinet meets the following requirements:
1. the air temperature is minus 5 ℃ to plus 40 ℃;
2. relative humidity of air: not more than 85%;
3. atmospheric pressure: 70.1kPa to 106.2kPa;
4. the equipment is located in the cabinet and vibrates: 10 Hz-200 Hz;
5. the periphery of the branching collector is free from corrosion and harmful gas causing explosion danger;
step 3, connecting signal data of ZPW-2000R type non-insulated track circuit equipment to be acquired with a photoelectric isolation circuit 1 and an input isolation circuit 2 through a serial interface respectively, receiving switching value signals, low-frequency signals and address coding signals by using the photoelectric isolation circuit 1, and receiving power-out voltage signals by using the input isolation circuit 2;
step 4, the photoelectric isolation circuit 1 receives a switching value signal, a low-frequency signal and an address coding signal, isolates the switching value signal, sends the switching value signal, the low-frequency signal and the address coding signal to the digital quantity collector 5, the input isolation circuit 2 receives a power output voltage signal, isolates and reduces the voltage, and then superimposes the power output voltage signal with a direct current bias signal of the direct current bias circuit 4, and sends the superimposed power output voltage signal to the analog quantity collector 6, the power output voltage signal isolated and reduced by the input isolation circuit 2 is also sent to the comparator 3, and the comparator 3 sequentially arranges the power output voltage signals and then outputs the power output voltage signal to the digital quantity collector 5;
step 5, the digital quantity collector 5 converts the switching value signal, the low-frequency signal, the address coding signal and the power output voltage signal into switching value data, low-frequency data, address coding data and power output voltage data, and then transmits the switching value data, the low-frequency data, the address coding data and the power output voltage data to the central processing unit 7, and the analog quantity collector 6 converts the power output voltage signal into power output voltage data in a digital form and then transmits the power output voltage data to the central processing unit 7;
step 6, the central processing unit 7 processes and calculates the switching value data, the low-frequency data, the address coding data and the power-out voltage data transmitted by the digital quantity collector 5 and the analog quantity collector 6, and finally the processed data result is transmitted to the track circuit maintenance terminal;
the method for performing specific operation by the central processing unit 7 includes:
step 61, sorting the switching value data, the low-frequency data, the address coding data and the power-out voltage data received by the central processing unit 7, and forming a data set;
step 62, predicting switching value data, low-frequency data, address coding data and power output voltage data by adopting a moving average method to obtain predicted values of the switching value data, the low-frequency data, the address coding data and the power output voltage data, wherein the predicted values are as follows:
；
where k is the number of time periods of moving average (1 < k < t),、/>and->Respectively representing actual measured values from the previous period and the first two periods to the previous k period, wherein t is the total average period number;
step 63, fitting the predicted value of the switching value data, the low-frequency data, the address coding data and the power-out voltage data obtained in the step 62 with the measured value of the switching value data, the low-frequency data, the address coding data and the power-out voltage data obtained in the step 61 to obtain a determined coefficient valueThe specific fitting model is as follows:
；
in the method, in the process of the invention,the ith measurement value for switching value data, low-frequency data, address-coded data or power-out voltage data,/->The ith predicted value is switching value data, low-frequency data, address coding data or power-out voltage data, and n is actual measurement times;
step 64, carrying out standardization processing on the acquired data to form a standard data set, wherein a standardization processing model is as follows:
；
in the method, in the process of the invention,for standardized data values, +.>Average value of actual measured value of switching value data, low-frequency data, address code data or power voltage data, +.>Is an error coefficient, and the value range is 0.01-0.04;
step 65, storing the standard data sets of the switching value data, the low-frequency data, the address coding data and the power voltage data obtained in the step 64 into the RAM of the CPU 7 for analysis.
In the embodiment, the switching value data, the low-frequency data, the address coding data and the power output voltage data of the ZPW-2000R type non-insulated track circuit equipment acquired by the acquirer are subjected to standardized processing, and compared with the prior art, the method improves the consistency and the interoperability of the data, can improve the timeliness of data processing, improves the accuracy of the acquired data, is beneficial to ensuring the safe and stable operation of the equipment, reduces the fault risk and improves the reliability and the operation efficiency of the equipment.
The embodiments of the present invention have been described above with reference to the accompanying drawings, but the present invention is not limited to the above-described embodiments, which are merely illustrative and not restrictive, and many forms may be made by those having ordinary skill in the art without departing from the spirit of the present invention and the scope of the claims, which are to be protected by the present invention.
Claims (1)
1. The utility model provides a collection method of separated time collector, includes photoelectric isolation circuit (1), input isolation circuit (2), comparator (3), direct current offset circuit (4), digital quantity collector (5), analog quantity collector (6) and central processing unit (7), photoelectric isolation circuit (1) is connected with digital quantity collector (5), and input isolation circuit (2) are connected with digital quantity collector (5) through comparator (3), and input isolation circuit (2) and direct current offset circuit (4) are all connected with analog quantity collector (6), and digital quantity collector (5) and analog quantity collector (6) are connected with central processing unit (7) respectively, and its characterized in that includes the following steps:
step 1, installing a branching collector in a cabinet of ZPW-2000R type non-insulated track circuit equipment;
step 2, ensuring that the working environment of the distribution line collector in the cabinet meets the following requirements:
1. the air temperature is minus 5 ℃ to plus 40 ℃;
2. relative humidity of air: not more than 85%;
3. atmospheric pressure: 70.1kPa to 106.2kPa;
4. the equipment is located in the cabinet and vibrates: 10 Hz-200 Hz;
5. the periphery of the branching collector is free from corrosion and harmful gas causing explosion danger;
step 3, connecting signal data of ZPW-2000R type non-insulated track circuit equipment to be acquired with a photoelectric isolation circuit (1) and an input isolation circuit (2) through a serial interface respectively, receiving switching value signals, low-frequency signals and address coding signals by using the photoelectric isolation circuit (1), and receiving power-out voltage signals by using the input isolation circuit (2);
step 4, the photoelectric isolation circuit (1) receives a switching value signal, a low-frequency signal and an address coding signal, the switching value signal, the low-frequency signal and the address coding signal are isolated and then sent to the digital quantity collector (5), the input isolation circuit (2) receives a power output voltage signal, the power output voltage signal is subjected to isolation and depressurization and then is overlapped with a direct current bias signal of the direct current bias circuit (4), the direct current bias signal is then sent to the analog quantity collector (6), the power output voltage signal subjected to isolation and depressurization by the input isolation circuit (2) is also sent to the comparator (3), the comparator (3) sequentially arranges the power output voltage signals, and then the power output voltage signal is output to the digital quantity collector (5);
step 5, the digital quantity collector (5) converts the switching value signal, the low-frequency signal, the address coding signal and the power output voltage signal into switching value data, low-frequency data, address coding data and power output voltage data, and then transmits the switching value data, the low-frequency data, the address coding data and the power output voltage data to the central processing unit (7), and the analog quantity collector (6) converts the power output voltage signal into power output voltage data in a digital form and then transmits the power output voltage data to the central processing unit (7);
step 6, the central processing unit (7) processes and calculates the switching value data, the low-frequency data, the address coding data and the power output voltage data transmitted by the digital acquisition unit (5) and the analog acquisition unit (6), and finally the processed data result is sent to the track circuit maintenance terminal, and the method for carrying out specific operation by the central processing unit (7) comprises the following steps:
step 61, sorting switching value data, low-frequency data, address coding data and power-out voltage data received by the central processing unit (7) and forming a data set;
step 62, predicting switching value data, low-frequency data, address coding data and power output voltage data by adopting a moving average method to obtain predicted values of the switching value data, the low-frequency data, the address coding data and the power output voltage data, wherein the predicted values are as follows:
；
where k is the number of time periods of moving average (1 < k < t),、/>and->Respectively representing actual measured values from the previous period and the first two periods to the previous k period, wherein t is the total average period number;
step 63, fitting the predicted value of the switching value data, the low-frequency data, the address coding data and the power-out voltage data obtained in the step 62 with the measured value of the switching value data, the low-frequency data, the address coding data and the power-out voltage data obtained in the step 61 to obtain a determined coefficient valueThe specific fitting model is as follows:
；
in the method, in the process of the invention,the ith measurement value for switching value data, low-frequency data, address-coded data or power-out voltage data,/->The ith predicted value is switching value data, low-frequency data, address coding data or power-out voltage data, and n is actual measurement times;
step 64, carrying out standardization processing on the acquired data to form a standard data set, wherein a standardization processing model is as follows:
；
in the method, in the process of the invention,for standardized data values, +.>Average value of actual measured value of switching value data, low-frequency data, address code data or power voltage data, +.>Is an error coefficient whichThe value range is 0.01-0.04;
and 65, storing the standard data sets of the switching value data, the low-frequency data, the address coding data and the power-out voltage data obtained in the step 64 into a RAM of a central processing unit (7) for analysis.
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