CN114499347A - Control device and method for point switch - Google Patents

Control device and method for point switch Download PDF

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Publication number
CN114499347A
CN114499347A CN202210321641.1A CN202210321641A CN114499347A CN 114499347 A CN114499347 A CN 114499347A CN 202210321641 A CN202210321641 A CN 202210321641A CN 114499347 A CN114499347 A CN 114499347A
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China
Prior art keywords
circuit
signal
control
switch machine
stage
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CN202210321641.1A
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Chinese (zh)
Inventor
邢美丽
盖书敏
丁欢
任喜国
黄彬彬
韩帅
沈俊远
肖毅平
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CRSC Research and Design Institute Group Co Ltd
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CRSC Research and Design Institute Group Co Ltd
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Priority to CN202210321641.1A priority Critical patent/CN114499347A/en
Publication of CN114499347A publication Critical patent/CN114499347A/en
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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P27/00—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage
    • H02P27/04—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage
    • H02P27/06—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage using dc to ac converters or inverters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
    • B61L5/00—Local operating mechanisms for points or track-mounted scotch-blocks; Visible or audible signals; Local operating mechanisms for visible or audible signals
    • B61L5/06—Electric devices for operating points or scotch-blocks, e.g. using electromotive driving means
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M1/00—Details of apparatus for conversion
    • H02M1/08—Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters
    • H02M1/088—Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters for the simultaneous control of series or parallel connected semiconductor devices
    • H02M1/092—Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters for the simultaneous control of series or parallel connected semiconductor devices the control signals being transmitted optically
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M1/00—Details of apparatus for conversion
    • H02M1/32—Means for protecting converters other than automatic disconnection
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M3/00—Conversion of dc power input into dc power output
    • H02M3/22—Conversion of dc power input into dc power output with intermediate conversion into ac
    • H02M3/24—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters
    • H02M3/28—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac
    • H02M3/325—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal
    • H02M3/335—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
    • H02M3/3353—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only having at least two simultaneously operating switches on the input side, e.g. "double forward" or "double (switched) flyback" converter
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
    • H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
    • H02M7/44—Conversion of dc power input into ac power output without possibility of reversal by static converters
    • H02M7/48—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M7/53—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
    • H02M7/537—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters
    • H02M7/5387—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters in a bridge configuration
    • H02M7/53871—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters in a bridge configuration with automatic control of output voltage or current
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P29/00—Arrangements for regulating or controlling electric motors, appropriate for both AC and DC motors
    • H02P29/02—Providing protection against overload without automatic interruption of supply
    • H02P29/024—Detecting a fault condition, e.g. short circuit, locked rotor, open circuit or loss of load
    • H02P29/028—Detecting a fault condition, e.g. short circuit, locked rotor, open circuit or loss of load the motor continuing operation despite the fault condition, e.g. eliminating, compensating for or remedying the fault

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Inverter Devices (AREA)

Abstract

The invention provides a control device and a method for a switch machine, wherein the control device comprises: the trackside power supply conversion module is used for converting the alternating current beside the track into a first direct current; the logic control module is used for sending a first control signal and a second control signal; the first-stage control module is used for converting the first direct current into a pulse signal according to the first control signal; the isolation boosting module is used for outputting bus voltage according to the pulse signal; and the second-stage control module is used for converting the bus voltage into the working voltage of the point switch according to the second control signal. The high-frequency transformer between the two control modules isolates the two control modules, thereby realizing that the switch machine can be driven safely.

Description

Control device and method for point switch
Technical Field
The invention belongs to the technical field of rail transit train operation control, and particularly relates to a control device and a control method for a point switch.
Background
The switch machine is as the core equipment that rail transit switch switches, locking, and its reliability can produce the important influence to the driving safety and the conveying efficiency of railway, and railway signal control system adopts centralized control mode to control the switch machine mostly at present, and centralized control mode exists that signal cable lays the length and is restricted, difficult to maintain, shortcoming such as with high costs. Most of driving modules (control devices) of the existing switch machines adopt relays and safety and control modes for output, the relays are easily influenced by the environment, faults such as node aging and adhesion can occur in long-time work, the switches are not suitable for being used in outdoor control equipment, and the traditional safety and circuit structure are complex.
Therefore, it is necessary to design a control device and method for a switch machine to drive the switch machine without a relay and without safety and to solve the above technical problems.
Disclosure of Invention
In view of the above problem, the present invention provides a control device for a switch machine, the control device comprising:
the trackside power supply conversion module is used for converting the alternating current beside the track into a first direct current;
the logic control module is used for sending a first control signal and a second control signal;
the first-stage control module is used for converting the first direct current into a pulse signal according to the first control signal;
the isolation boosting module is used for outputting bus voltage according to the pulse signal;
and the second-stage control module is used for converting the bus voltage into the working voltage of the point switch according to the second control signal.
Further, the rail-side power conversion module comprises:
the power supply unit is used for converting the alternating current beside the rail into second direct current;
and the strong current conversion unit is used for converting the second direct current into the first direct current.
Further, the logic control module is further configured to issue a third control signal and a fourth control signal.
Further, the control device further comprises an acquisition module, the acquisition module comprises:
the position acquisition unit is used for acquiring a positioning current signal or a reverse current signal of the point switch according to the third control signal or the fourth control signal;
and the acquisition input unit is used for transmitting the positioning current signal or the inverted current signal to the logic control module.
Furthermore, the acquisition input unit is also used for acquiring a bus voltage signal, a bus current signal and a switch machine working voltage signal and transmitting the bus voltage signal, the bus current signal and the switch machine working voltage signal to the logic control module.
Further, the logic control module comprises:
the first safety CPU is used for sending out a first control signal and a third control signal;
and the second safety CPU is used for sending out a second control signal and a fourth control signal.
Further, the air conditioner is provided with a fan,
the first safety CPU is also used for sending a fifth control signal;
the second safety CPU is also used for sending out a sixth control signal.
Further, the air conditioner is provided with a fan,
the logic control module further comprises a safe power supply conversion circuit, and the safe power supply conversion circuit is used for providing driving voltage for the first-stage control module according to the fifth control signal and the sixth control signal.
Further, the acquisition input unit comprises a first AD acquisition circuit, a second AD acquisition circuit, a first isolation operational amplifier circuit and a second isolation operational amplifier circuit, wherein,
the first isolation operational amplifier circuit is connected with a first AD acquisition circuit, and a positioning current signal or a reverse current signal of the switch machine, a bus voltage signal, a bus current signal and a working voltage signal of the switch machine are transmitted to a first safety CPU through the first AD acquisition circuit after passing through the first isolation operational amplifier circuit;
the second isolation operational amplifier circuit is connected with a second AD acquisition circuit, and the positioning current signal or the inverted current signal of the switch machine, the signal of the bus voltage, the signal of the bus current and the working voltage signal of the switch machine are transmitted to a second safety CPU through the second AD acquisition circuit after passing through the second isolation operational amplifier circuit.
Further, the power supply unit includes a power conversion circuit and a rectification circuit, wherein,
the alternating current beside the rails is converted by the power conversion circuit and then is output as third direct current;
the alternating current beside the rail is rectified by the rectifying circuit and then outputs a second direct current.
Further, the strong current conversion unit comprises a soft start circuit and a PFC voltage conversion circuit, wherein,
the second direct current outputs a first direct current after sequentially passing through the soft start circuit and the PFC voltage conversion circuit.
Further, the first-stage control module comprises a first optical coupling circuit, a first-stage driving circuit and a high-frequency inverter circuit, wherein,
the first control signal outputs a first driving signal to the high-frequency inverter circuit after passing through the first optocoupler circuit and the first-stage driving circuit;
the high-frequency inverter circuit converts the first direct current into a pulse signal according to the first driving signal.
Further, the second-stage control module comprises a second optical coupler circuit, a second-stage driving circuit and an inverter circuit, wherein,
the second control signal outputs a second driving signal to the inverter circuit after passing through the second optocoupler circuit and the second-stage driving circuit;
and the inverter circuit converts the bus voltage into the working voltage of the point switch according to the second driving signal.
Furthermore, when the first-stage control module and the isolation boosting module output normally, the second-stage control module can convert the bus voltage into the working voltage of the switch machine according to the second control signal.
Further, the isolation boosting module comprises a high-frequency transformer and a high-frequency rectifying circuit, the high-frequency transformer is connected with the high-frequency rectifying circuit, wherein,
after voltage conversion is carried out on the pulse signals through the high-frequency transformer, the pulse signals are rectified through the high-frequency rectifying circuit and then bus voltage is output.
In one aspect, the present invention also provides a control method for a switch machine, the control method comprising:
converting the alternating current beside the rail into a first direct current through a power supply conversion module beside the rail;
sending a first control signal and a second control signal through a logic control module;
converting the first direct current into a pulse signal through a first-stage control module according to the first control signal;
according to the pulse signal, the bus voltage is output through the isolation boosting module;
and converting the bus voltage into the working voltage of the switch machine through a second-level control module according to the second control signal.
Further, the first-stage control module comprises a first optical coupling circuit, a first-stage driving circuit and a high-frequency inverter circuit, wherein,
the first control signal outputs a first driving signal to the high-frequency inverter circuit after passing through the first optocoupler circuit and the first-stage driving circuit;
the high-frequency inverter circuit converts the first direct current into a pulse signal according to the first driving signal.
Further, the second-stage control module comprises a second optical coupler circuit, a second-stage driving circuit and an inverter circuit, wherein,
the second control signal outputs a second driving signal to the inverter circuit after passing through the second optocoupler circuit and the second-stage driving circuit;
and the inverter circuit converts the bus voltage into the working voltage of the point switch according to the second driving signal.
In another aspect, the present invention also provides a computer-readable storage medium storing a program, which is executable by a processor to implement a control method for a switch machine as described above.
The invention provides a control device and a method for a switch machine, wherein the control device is positioned near an outdoor track, adopts local power supply (alternating current beside the track) and outputs in a power conversion mode, and can realize state acquisition (positioning and inversion) and control (converting bus voltage into working voltage of the switch machine) of the switch machine.
The control device provided by the invention adopts a relay-free control mode to output, and can realize complete isolation of two-stage control modules and high-voltage safety and control of the two-stage control modules through the first-stage control module and the second-stage control module which are built by power electronic devices. When any stage of control module is abnormal, it can ensure that the guide safety side, the control device has no output and the switch machine has no action.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic diagram illustrating a control device according to an embodiment of the present invention transmitting information with an indoor integrated data monitoring and control center by using a redundant communication method of a communication network.
Fig. 2 shows a schematic structural diagram of a control device according to an embodiment of the present invention.
FIG. 3 shows a schematic structural diagram of a first level control module and a second level control module according to an embodiment of the invention.
Fig. 4 shows a schematic structural diagram of an acquisition module according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1, the present invention provides a control device for a switch machine, the whole control device has a zone interlock control function (i.e. the switch machine beside a track in a designated zone is controlled by an integrated data detection and control center), and as shown in fig. 1, the control device adopts a redundant communication mode of a communication network to carry out information transmission with an indoor integrated data monitoring and control center. The two-by-two structural design of a driving and collecting hardware circuit is realized by adopting a main and standby system operation mode formed by two control devices, and real-time data interaction is performed between two systems (namely two control devices, wherein one control device is used as an I system, and the other control device is used as an II system, the I system can be used as a main system, the II system can be used as a standby system, or the I system can be used as a standby system, and the II system is used as a main system), so that the switching to the standby system operation can be ensured when the main system works abnormally, and meanwhile, fault information is uploaded to an indoor comprehensive data monitoring and control center.
As shown in fig. 2, the control device includes:
the trackside power supply conversion module is used for converting the alternating current beside the track into a first direct current;
the logic control module is used for sending a first control signal and a second control signal;
the first-stage control module is used for converting the first direct current into a pulse signal according to the first control signal;
the isolation boosting module is used for outputting bus voltage according to the pulse signal;
and the second-stage control module is used for converting the bus voltage into the working voltage of the point switch according to the second control signal.
In addition, in the invention, the control device also comprises an acquisition module.
The trackside power conversion module, the logic control module, the first-stage control module, the isolation boosting module, the second-stage control module and the acquisition module are explained in detail below.
For the trackside power conversion module, specifically, the trackside power conversion module includes:
the power supply unit is used for converting the off-rail alternating current into a second direct current, and the off-rail alternating current is 220V without loss of generality; the power supply unit comprises a power supply conversion circuit and a rectification circuit, and alternating current beside the rails is converted by the power supply conversion circuit and then is output as third direct current. The power supply conversion circuit comprises an isolation power supply circuit and a plurality of isolation DC-DC power supply conversion circuits, after the isolation power supply circuit passes through, the alternating current beside the rail can be converted into 24V direct current for output, and the 24V direct current can be converted into third direct current with other specification voltages through various isolation DC-DC power supply conversion circuits, for example, three isolation DC-DC power supply conversion circuits are provided, and the three isolation DC-DC power supply conversion circuits respectively convert the 24V direct current into third direct current with 3.3V, 5V and 15V, so that the required weak current can be supplied for the whole control device. The alternating current beside the rail can also output a second direct current after being rectified by the rectifying circuit.
A strong current conversion unit for converting the second direct current into a first direct current; the strong current conversion unit comprises a soft start circuit and a PFC voltage conversion circuit; the second direct current outputs the first direct current after sequentially passing through a soft start circuit (the soft start circuit is used for preventing the second direct current from impacting subsequent circuits) and a PFC voltage conversion circuit (used for boosting the second direct current).
As for the logic control module, specifically, the logic control module includes a first secure CPU and a second secure CPU (the first secure CPU and the second secure CPU communicate with each other through an isolation chip), where the first secure CPU is configured to send a first control signal, a third control signal, and a fifth control signal; and the second safety CPU is used for sending out a second control signal, a fourth control signal and a sixth control signal. The first secure CPU and the second secure CPU have the same configuration, the first secure CPU includes a power supply switch, an AMR (Advanced RISC mechanisms) and an FPGA (Field Programmable Gate Array), a design architecture of "AMR + FPGA" is formed between the AMR and the FPGA (that is, the FPGA and the ARM are integrated on one SoC), that is, the SoC (System on Chip) is used as the first secure CPU.
For the whole logic control module, a standard two-out-of-two structure is adopted, each safety CPU acquires a control command of a comprehensive data monitoring and control center in real time, through safety judgment of the control command, and by combining the acquired bus voltage signal, the bus current signal, the output current (current output through an inverter circuit) signal and a positioning or inversion current signal, the first safety CPU outputs 7 paths of safety signals (4 paths of PWM-IO signals, 1 path of PWM-IO signals and 2 paths of IO signals) and the second safety CPU2 outputs 9 paths of safety signals (6 paths of PWM-IO signals, 1 path of PWM-IO signals and 2 paths of IO signals), and input signals of a safety power supply conversion circuit, a first-level control module, a second-level control module and an acquisition module can be controlled through the corresponding safety signals.
As for the acquisition module, specifically, the acquisition module includes:
the position acquisition unit is used for acquiring a positioning current signal of the switch machine according to a third control signal or acquiring a reverse current signal of the switch machine according to a fourth control signal, wherein the position acquisition unit comprises a transformer and a positioning and reverse detection circuit (namely a positioning detection circuit and a reverse detection circuit); the transformer T converts 220V off-track alternating current into low-voltage (40-50V) alternating current, strong current (off-track alternating current) is isolated from the acquisition module, the low-voltage alternating current is input into the positioning and counterpoint detection circuit (the low-voltage alternating current provides alternating current for the positioning and counterpoint detection circuit), the positioning current signal of the switch machine can be acquired through the positioning detection circuit, and the counterpoint current signal of the switch machine can be acquired through the counterpoint detection circuit.
In this embodiment, the transformer T includes a first primary coil and two secondary coils (i.e., a first secondary coil and a second secondary coil), and the first primary coil of the transformer T is connected to the ac power beside the rail.
The following explains the specific working principle of the positioning and inversion detection circuit (refer to fig. 4):
the positioning detection circuit comprises a resistor R1, a resistor R3 and two first solid-state switches, wherein one end of the resistor R1 is connected with the anode of one of the first solid-state switches, the other end of the resistor R1 is connected with one end of the first secondary coil, and the cathode of one of the first solid-state switches is connected with one end of the resistor R3; the other end of the first secondary coil is connected with the anode of the other first solid-state switch, and the cathode of the other first solid-state switch is connected with the other end of the resistor R3; both ends of the resistor R3 are connected to the switch machine.
The inversion detection circuit comprises a resistor R2, a resistor R4 and two second solid-state switches, wherein one end of the resistor R2 is connected with the anode of one of the second solid-state switches, the other end of the resistor R2 is connected with one end of the second secondary coil, and the cathode of one of the second solid-state switches is connected with one end of the resistor R4; the other end of the second secondary coil is connected with the anode of the other second solid-state switch, and the cathode of the other second solid-state switch is connected with the other end of the resistor R4; both ends of the resistor R4 are connected to the switch machine.
After the whole control device outputs, a third control signal can be output through the first safety CPU, the third control signal comprises 2 paths of IO signals, and the 2 paths of IO signals are respectively transmitted to the control stage of one of the first solid-state switches and the control stage of the other first solid-state switch through a third optical coupling circuit (two optical coupling circuits); the second safety CPU outputs a fourth control signal, the fourth control signal is also 2 paths of IO signals, and the 2 paths of IO signals are respectively transmitted to the control stage of the other first solid-state switch and the control stage of one of the first solid-state switches through a fourth optical coupling circuit (two). The on-off of all solid state switches can be controlled, and when the switch machine is in place, the positioning or inversion detection circuit forms a loop.
The acquisition input unit is used for transmitting the positioning current signal or the flip current signal to the logic control module, and in this embodiment, the positioning current signal can be acquired through the sampling resistor R1, and the flip current signal can be acquired through the sampling resistor R2, specifically, the acquisition input unit includes a first AD acquisition circuit, a second AD acquisition circuit, a first isolation operational amplifier circuit and a second isolation operational amplifier circuit, all the isolation operational amplifier circuits are used for isolating and amplifying corresponding signals, all the AD acquisition circuits are used for acquiring and transmitting signals which are isolated and amplified by the corresponding isolation operational amplifier circuits to corresponding safety CPUs, wherein,
the first AD acquisition circuit is connected with the first isolation operational amplifier circuit, wherein the number of the first isolation operational amplifier circuit is five (for distinction, the five first isolation operational amplifier circuits can be named as a first isolation operational amplifier circuit A1, a first isolation operational amplifier circuit A2, a first isolation operational amplifier circuit A3, a first isolation operational amplifier circuit A4 and a first isolation operational amplifier circuit A5 respectively), the five first isolation operational amplifier circuits are all connected with the first AD acquisition circuit, and the first AD acquisition circuit is connected with the first safe CPU; the number of the second isolation operational amplifier circuits is also five (for distinction, five second isolation operational amplifier circuits can be named as a second isolation operational amplifier circuit B1, a second isolation operational amplifier circuit B2, a second isolation operational amplifier circuit B3, a second isolation operational amplifier circuit B4 and a second isolation operational amplifier circuit B5 respectively), the five second isolation operational amplifier circuits are all connected with a second AD acquisition circuit, and the second AD acquisition circuit is connected with a second safety CPU.
Two ends of the resistor R1 are connected to the first isolation operational amplifier circuit A1, and two ends of the resistor R1 are also connected to the second isolation operational amplifier circuit B1; two ends of the resistor R2 are connected to the first isolation operational amplifier circuit A2, and two ends of the resistor R2 are also connected to the second isolation operational amplifier circuit B2.
Through software design (two-out-of-two logic processing of two safe CPUs), whether the output of the whole control device is normal, whether the driving of the switch machine is in place and the like are judged, and as shown in fig. 4, hardware isomerism is adopted between AD acquisition and isolation operational amplifier circuits corresponding to the two safe CPUs, so that the safe acquisition of position information of the switch machine is ensured. Compared with the traditional trackside positioning or inversion acquisition circuit, the hardware circuit of the whole acquisition module at the position has simple structure and low cost.
In this embodiment, the collecting input unit is configured to collect a bus voltage signal, a bus current signal, and working voltage information of the switch machine, and transmit the bus voltage signal, the bus current signal, and the working voltage information of the switch machine to the logic control module, specifically:
the signal of the bus voltage is isolated and amplified by a first isolation operational amplifier circuit A3 and then transmitted to a first safety CPU by a first AD acquisition circuit, the signal of the bus current is isolated and amplified by a first isolation operational amplifier circuit A4 and then transmitted to the first safety CPU by the first AD acquisition circuit, and the working voltage signal of the switch machine is transmitted to the first safety CPU by the first AD acquisition circuit after passing through a first isolation operational amplifier circuit A5; the signal of busbar voltage is transmitted for second safe CPU through second AD acquisition circuit after the isolation is enlargied through second isolation operational amplifier circuit B3, and the signal of busbar current is transmitted for second safe CPU through second AD acquisition circuit after the isolation is enlargied through second isolation operational amplifier circuit B4, and the operating voltage signal of goat is transmitted for second safe CPU through second AD acquisition circuit after second isolation operational amplifier circuit B5.
In this embodiment, the logic control module further includes a safety power conversion circuit, and the safety power conversion circuit is configured to provide a driving voltage for the first-stage control module (specifically, the first optical coupler circuit) according to a fifth control signal (the fifth control signal is a 1-way PWM-IO signal) and a sixth control signal (the sixth control signal is a 1-way PWM-IO signal).
In this embodiment, the strong current conversion unit includes a soft start circuit and a PFC voltage conversion circuit, where as shown in fig. 3, the PFC voltage conversion circuit includes an inductor L1, a resistor R11, a diode D1, a MOS transistor Q11, a capacitor C1 and a capacitor C2, one end of the inductor L1 is connected to a first output terminal of the soft start circuit, one end of the resistor R11 is connected to a second output terminal of the soft start circuit, an anode of the diode D1 is connected to the other end of the inductor L1, a cathode of the diode D1 is connected to one end of the capacitor C1, the other end of the resistor R11 is connected to the other end of the capacitor C1, one end of the capacitor C2 is connected to one end of the capacitor C1, the other end of the capacitor C2 is connected to the other end of the capacitor C1, a source of the MOS transistor Q11 is connected to the other end of the resistor R11, and a drain of the transistor Q11 is connected to an anode of the diode D1.
A PFC voltage conversion circuit built by hardware can control and output a switching tube driving signal by detecting the current of an input end.
Specifically, the PFC voltage conversion circuit further includes a PFC controller, a current detection terminal of the PFC controller is connected to one end of the resistor R11, and is configured to detect a current of the second direct current; a voltage detection terminal of the PFC controller is connected to the cathode of the diode D1 and is used for detecting the voltage of the second direct current; the output end of the PFC controller is connected to the gate of the MOS transistor Q11 (the output end of the PFC controller can output the driving signal of the MOS transistor Q11). The input end current and the input end voltage are ensured to be in the same phase, so that the power factor of the whole PFC voltage conversion circuit is improved, the stable first direct current is output, the process is purely hardware control, and different direct current outputs can be realized by changing the parameters of hardware components.
In this embodiment, the first-stage control module includes a first optical coupler circuit, a first-stage driving circuit, and a high-frequency inverter circuit, where a first control signal (the first control signal is 4 PWM-IO signals) passes through the first optical coupler circuit and the first-stage driving circuit in sequence, and then outputs a first driving signal (the first driving signal has 4 paths, such as driving signals 1-4 shown in fig. 3) to the high-frequency inverter circuit; the high-frequency inverter circuit converts the first direct current into a pulse signal according to the first driving signal.
As for the high frequency inverter circuit, as shown in fig. 3, the high frequency inverter circuit includes a MOS transistor Q1, a MOS transistor Q2, a MOS transistor Q3, and a MOS transistor Q4, wherein,
the drain electrode of the MOS transistor Q1 is connected to one end of the capacitor C2, the drain electrode of the MOS transistor Q3 is connected to the source electrode of the MOS transistor Q1, and the source electrode of the MOS transistor Q3 is connected to the other end of the capacitor C2; the drain electrode of the MOS tube Q2 is connected with the drain electrode of the MOS tube Q1, the source electrode of the MOS tube Q2 is connected with the drain electrode of the MOS tube Q4, and the source electrode of the MOS tube Q4 is connected with the source electrode of the MOS tube Q3; the 4 paths of first control signals are respectively transmitted to the grid electrode of the MOS transistor Q1, the grid electrode of the MOS transistor Q2, the grid electrode of the MOS transistor Q3 and the grid electrode of the MOS transistor Q4.
The high-frequency inverter circuit further comprises a capacitor C11, one end of the capacitor C11 is connected to the source of the MOS transistor Q1, and the other end of the capacitor C11 is connected to the high-frequency transformer.
In this embodiment, the isolated boost module comprises a high frequency transformer and a high frequency rectifying circuit, the high frequency transformer is connected with the high frequency rectifying circuit, wherein the pulse signal is rectified by the high frequency rectifying circuit after being voltage-converted by the high frequency transformer, and then the bus voltage is output, wherein,
the high-frequency transformer comprises a second primary coil and a third secondary coil, the other end of the capacitor C11 is connected to one end of the second primary coil, and the other end of the second primary coil is connected to the source electrode of the MOS transistor Q4; the high-frequency rectifying circuit comprises a diode D2, a diode D3, a diode D4 and a diode D5, wherein a diode D2 and a diode D3 are connected in series in the forward direction, the cathode of the diode D2 is connected to one end of the third secondary coil, and the anode of the diode D3 is connected to the other end of the third secondary coil; diode D4 and diode D5 are connected in series in the forward direction, the cathode of diode D4 is connected to the cathode of diode D2, and the anode of diode D5 is connected to the anode of diode D3.
In this embodiment, the second-stage control module includes a second optical coupler circuit, a second-stage driving circuit, and an inverter circuit, where a second control signal (the second control signal is 6 PWM-IO signals) passes through the second optical coupler circuit and the second-stage driving circuit, and then outputs the second driving signal to the inverter circuit; the inverter circuit converts the bus voltage into an operating voltage of the switch machine according to a second driving signal (6 second driving signals, such as driving signals 1-6 shown in fig. 3), wherein,
the inverter circuit comprises an inductor L2, a capacitor C3, a capacitor C4, a MOS transistor Q5, a MOS transistor Q6, a MOS transistor Q7, a MOS transistor Q8, a MOS transistor Q9 and a MOS transistor Q10, wherein,
one end of an inductor L2 is connected to the anode of the diode D2, one end of a capacitor C3 is connected to the other end of the inductor L2, the other end of a capacitor C3 is connected to the cathode of the diode D5, one end of the capacitor C4 is connected to one end of a capacitor C3, and the other end of the capacitor C4 is connected to the other end of the capacitor C3;
the drain of the MOS transistor Q5 is connected to one end of the capacitor C4, the drain of the MOS transistor Q8 is connected to the source of the MOS transistor Q5, and the source of the MOS transistor Q8 is connected to the other end of the capacitor C4; the drain of the MOS transistor Q6 is connected with the drain of the MOS transistor Q5, the drain of the MOS transistor Q9 is connected with the source of the MOS transistor Q6, and the source of the MOS transistor Q9 is connected with the source of the MOS transistor Q8; the drain of the MOS transistor Q7 is connected with the drain of the MOS transistor Q6, the drain of the MOS transistor Q10 is connected with the source of the MOS transistor Q7, and the source of the MOS transistor Q10 is connected with the source of the MOS transistor Q9;
the 6 second control signals are respectively connected to the gate of the MOS transistor Q5, the gate of the MOS transistor Q6, the gate of the MOS transistor Q7, the gate of the MOS transistor Q8, the gate of the MOS transistor Q9, and the gate of the MOS transistor Q10, and an output terminal is respectively led out from the source of the MOS transistor Q5, the source of the MOS transistor Q6, and the source of the MOS transistor Q7 as an output of the entire control device (i.e., an operating voltage of the switch machine can be outputted).
In this embodiment, the process controlled by the whole logic control module is as follows:
controlling a first level control module
The two safe CPUs detect the bus voltage and current input by the second-stage control module in real time through the AD acquisition circuit with hardware isomerism, and the output current of the whole control device, if the two-out-of-two logic judgment is consistent (namely the bus voltage signal and the current signal collected by the safety CPU1, the output current signal of the whole control device and the signals of the fixed and reverse currents are consistent in one-to-one correspondence with the bus voltage signal and the current signal collected by the safety CPU2, the output current signal of the whole control device and the signals of the fixed and reverse currents, the judgment is consistent), the secure CPU1 (first secure CPU) outputs a 4-way PWM-IO signal (first control signal), a first drive signal is output through a first optocoupler circuit and a first-stage drive circuit, and a high-frequency inverter circuit is controlled to convert a first direct current into a high-frequency pulse signal for output; if the two signals are not consistent, the first safety CPU stops outputting 4 paths of PWM-IO control signals, the whole first-stage control module does not output, and meanwhile, the safety CPU1 can upload and store fault information to the comprehensive data monitoring and control center through the communication network.
When the safety CPU1 outputs 1 path of PWM-IO signal (fifth control signal) and the safety CPU2 (second safety CPU) outputs 1 path of PWM-IO signal (sixth control signal) as mutually exclusive signals, the safety power supply conversion circuit outputs control voltage to supply power to the first-stage control module, and if the safety power supply conversion circuit is abnormal, the safety power supply conversion circuit does not output voltage, and the first-stage control module does not output voltage.
The first-stage control module is provided with independent closed-loop control and can provide stable voltage input for the second-stage control module.
Control second level control module
The two safety CPUs detect the bus voltage and current input by the second-stage control module in real time through the AD acquisition circuits with different hardware structures and drive the output current of the whole control device, the two-out-of-two logic judgment is carried out, if the judgment is consistent, the safety CPU2 outputs 6 paths of PWM-IO signals (second control signals), the driving signals are output through the first optical coupler circuit and the second-stage drive circuit, and the inverter circuit is controlled to convert the bus voltage into the working voltage required by the point switch; if the two signals are not consistent, the safety CPU2 stops outputting 6 paths of PWM-IO control signals, the second-level control module does not output any signal, and the fault information is uploaded and stored.
The two safe CPUs perform real-time interaction of internal data through the isolation chip, and can judge whether the PWM-IO signals output by the switch are correct, namely the safe CPU1 can detect whether 6 paths of PWM-IO signals output by the safe CPU2 are correct in real time, and the safe CPU2 can detect whether 4 paths of PWM-IO control signals output by the safe CPU1 are correct in real time, so that a mutual verification mechanism is formed.
On the basis of not changing a hardware circuit, different PWM-IO control signals can be output by modifying a control program of the safe CPU2 according to the types of the point switches beside the rail, so that the safe driving of the point switches of various types can be realized, and the point switches have good expansibility and universality. When and only when the first-stage control module and the isolation boosting module output normally, the second-stage control module can work normally and output the working Voltage required by the switch machine, and the working Voltage required by the switch machine can pass through a Transient Voltage super (Transient diode, abbreviated in English) TVS (Transient Voltage super), and precision components in an electronic circuit (namely the whole control device) can be effectively protected by the TVS, so that the precision components are prevented from being damaged by various surge pulses.
Because the high-frequency transformer has the original secondary side isolation function, even if a device of the primary side first-level control module has a device fault, the secondary side second-level control module cannot output by mistake, the hardware safety isolation of the two-level control module is realized, and because the bus voltage and the current are collected, if the device of the second-level control module is found to be abnormal, the safe power supply conversion circuit is stopped to output power, the two-level driving signals (the first control signal and the second control signal) of the two CPUs are stopped to output, and therefore the safe driving output of the switch machine is ensured.
In the embodiment, the safety signals generated by the double safety CPUs are used for controlling the output of two-stage drive (a first-stage drive circuit and a second-stage drive circuit), so that the whole control device can be ensured to have no output when any safety CPU is abnormal; both the secure CPU1 and the secure CPU2 may upload and store fault information to the integrated data monitoring and control center via the communications network.
In another aspect, the present invention further provides a control method for a switch machine, the control method including:
converting the alternating current beside the rail into a first direct current through a power supply conversion module beside the rail;
sending a first control signal and a second control signal through a logic control module;
converting the first direct current into a pulse signal through a first-stage control module according to the first control signal;
according to the pulse signal, the bus voltage is output through the isolation boosting module;
and converting the bus voltage into the working voltage of the switch machine through a second-level control module according to the second control signal.
The first-stage control module comprises a first optical coupler circuit, a first-stage driving circuit and a high-frequency inverter circuit, and a first control signal outputs a first driving signal to the high-frequency inverter circuit after passing through the first optical coupler circuit and the first-stage driving circuit; the high-frequency inverter circuit converts the first direct current into a pulse signal according to the first driving signal.
The second-stage control module comprises a second optical coupler circuit, a second-stage driving circuit and an inverter circuit, and a second control signal outputs a second driving signal to the inverter circuit after passing through the second optical coupler circuit and the second-stage driving circuit; and the inverter circuit converts the bus voltage into the working voltage of the point switch according to the second driving signal.
The functions and implementation manners of the steps of the control method for the switch machine are consistent with the functions and implementation manners of the components in the control device for the switch machine, and therefore, the detailed description is omitted here.
The present invention also provides a computer-readable storage medium storing a program executable by a processor to implement a control method for a switch machine as described above.
The switch machine control device beside the rail is an important component of the safe execution unit beside the rail, so the invention adopts a distributed safe execution unit product beside the rail, namely an interlocked logic control system (comprehensive data monitoring and control center) is positioned indoors, the switch machine control system (the whole control device of the invention) is arranged beside the rail, the distributed remote control is realized through redundant communication such as optical fiber communication, the reliability and the safety of a ground control system can be effectively improved through the nearby control and the closed-loop control of equipment, and no relay node is adopted between the whole strong current (figure 3) and the weak current).
Although the present invention has been described with reference to the preferred embodiments, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the scope of the present invention.

Claims (19)

1. A control device for a switch machine, characterized in that it comprises:
the trackside power supply conversion module is used for converting the alternating current beside the track into a first direct current;
the logic control module is used for sending a first control signal and a second control signal;
the first-stage control module is used for converting the first direct current into a pulse signal according to the first control signal;
the isolation boosting module is used for outputting bus voltage according to the pulse signal;
and the second-stage control module is used for converting the bus voltage into the working voltage of the point switch according to the second control signal.
2. A control apparatus for a switch machine as claimed in claim 1, wherein said trackside power conversion module comprises:
the power supply unit is used for converting the alternating current beside the rails into second direct current;
and the strong current conversion unit is used for converting the second direct current into the first direct current.
3. A control device for a switch machine as claimed in claim 2, characterized in that said logic control module is also adapted to issue a third control signal and a fourth control signal.
4. A control device for a switch machine as claimed in claim 3, characterized in that it further comprises an acquisition module comprising:
the position acquisition unit is used for acquiring a positioning current signal or a reverse current signal of the point switch according to the third control signal or the fourth control signal;
and the acquisition input unit is used for transmitting the positioning current signal or the inverted current signal to the logic control module.
5. The control device for the switch machine as claimed in claim 4, wherein the collection input unit is further configured to collect the bus voltage signal, the bus current signal and the switch machine operating voltage signal and transmit the bus voltage signal, the bus current signal and the switch machine operating voltage signal to the logic control module.
6. A control device for a switch machine as claimed in claim 5, characterized in that said logic control module comprises:
the first safety CPU is used for sending out a first control signal and a third control signal;
and the second safety CPU is used for sending out a second control signal and a fourth control signal.
7. A control device for a switch machine as claimed in claim 6,
the first safety CPU is also used for sending a fifth control signal;
the second safety CPU is also used for sending out a sixth control signal.
8. A control device for a switch machine as claimed in claim 7,
the logic control module further comprises a safe power supply conversion circuit, and the safe power supply conversion circuit is used for providing driving voltage for the first-stage control module according to the fifth control signal and the sixth control signal.
9. The control device for the switch machine as claimed in claim 8, wherein the acquisition input unit comprises a first AD acquisition circuit, a second AD acquisition circuit, a first isolation operational amplifier circuit and a second isolation operational amplifier circuit, wherein,
the first isolation operational amplifier circuit is connected with a first AD acquisition circuit, and a positioning current signal or a reverse current signal of the switch machine, a bus voltage signal, a bus current signal and a working voltage signal of the switch machine are transmitted to a first safety CPU through the first AD acquisition circuit after passing through the first isolation operational amplifier circuit;
the second isolation operational amplifier circuit is connected with a second AD acquisition circuit, and the positioning current signal or the inverted current signal of the switch machine, the signal of the bus voltage, the signal of the bus current and the working voltage signal of the switch machine are transmitted to a second safety CPU through the second AD acquisition circuit after passing through the second isolation operational amplifier circuit.
10. A control device for a switch machine, as claimed in claim 2, wherein said power supply unit comprises a power conversion circuit and a rectification circuit, wherein,
the alternating current beside the rails is converted by the power conversion circuit and then is output as third direct current;
the alternating current beside the rail is rectified by the rectifying circuit and then outputs a second direct current.
11. A control apparatus for a switch machine as claimed in claim 2, wherein said strong electric conversion unit comprises a soft start circuit and a PFC voltage conversion circuit, wherein,
the second direct current outputs a first direct current after sequentially passing through the soft start circuit and the PFC voltage conversion circuit.
12. A control device for a switch machine as claimed in any one of claims 1-11, characterized in that said first stage control module comprises a first opto-coupler circuit, a first stage drive circuit and a high frequency inverter circuit, wherein,
the first control signal outputs a first driving signal to the high-frequency inverter circuit after passing through the first optocoupler circuit and the first-stage driving circuit;
the high-frequency inverter circuit converts the first direct current into a pulse signal according to the first driving signal.
13. A control apparatus for a switch machine as claimed in any one of claims 1-11, wherein said second stage control module comprises a second optocoupler circuit, a second stage driver circuit and an inverter circuit, wherein,
the second control signal outputs a second driving signal to the inverter circuit after passing through the second optocoupler circuit and the second-stage driving circuit;
and the inverter circuit converts the bus voltage into the working voltage of the point switch according to the second driving signal.
14. A control device for a switch machine as claimed in any one of claims 1 to 11, wherein the second stage control module is capable of converting the bus voltage to the operating voltage of the switch machine in response to the second control signal when the first stage control module and the isolated boost module are both outputting normally.
15. The control device for the switch machine as claimed in claim 14, wherein the isolation boosting module comprises a high frequency transformer and a high frequency rectifying circuit, the high frequency transformer being connected with the high frequency rectifying circuit, wherein,
after voltage conversion is carried out on the pulse signals through the high-frequency transformer, the pulse signals are rectified through the high-frequency rectifying circuit and then bus voltage is output.
16. A control method for a switch machine, the control method comprising:
converting the alternating current beside the rail into a first direct current through a power supply conversion module beside the rail;
sending a first control signal and a second control signal through a logic control module;
converting the first direct current into a pulse signal through a first-stage control module according to the first control signal;
according to the pulse signal, the bus voltage is output through the isolation boosting module;
and converting the bus voltage into the working voltage of the switch machine through a second-level control module according to the second control signal.
17. A control method for a switch machine as claimed in claim 16, characterized in that said first stage control module comprises a first optocoupler circuit, a first stage drive circuit and a high frequency inverter circuit, wherein,
the first control signal outputs a first driving signal to the high-frequency inverter circuit after passing through the first optocoupler circuit and the first-stage driving circuit;
the high-frequency inverter circuit converts the first direct current into a pulse signal according to the first driving signal.
18. A control method for a switch machine as claimed in claim 16, characterized in that the second stage control module comprises a second optocoupler circuit, a second stage drive circuit and an inverter circuit, wherein,
the second control signal outputs a second driving signal to the inverter circuit after passing through the second optocoupler circuit and the second-stage driving circuit;
and the inverter circuit converts the bus voltage into the working voltage of the point switch according to the second driving signal.
19. A computer-readable storage medium, characterized in that it stores a program executable by a processor to implement a control method for a switch machine according to any one of claims 16 to 18.
CN202210321641.1A 2022-03-30 2022-03-30 Control device and method for point switch Pending CN114499347A (en)

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6366041B1 (en) * 2000-01-24 2002-04-02 Union Switch & Signal, Inc. Railway switch machine motor control apparatus
CN109278800A (en) * 2018-09-05 2019-01-29 交控科技股份有限公司 A kind of direct-current point machine control system and control method
CN109981006A (en) * 2019-03-27 2019-07-05 北京全路通信信号研究设计院集团有限公司 A kind of safe driving method of no node direct-current point machine and drive module
CN111746592A (en) * 2020-07-06 2020-10-09 北京全路通信信号研究设计院集团有限公司 Safe driving method and safe driving module for node-free three-phase alternating current point switch
CN112606869A (en) * 2020-12-28 2021-04-06 北京和利时系统工程有限公司 Point switch control device

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6366041B1 (en) * 2000-01-24 2002-04-02 Union Switch & Signal, Inc. Railway switch machine motor control apparatus
CN109278800A (en) * 2018-09-05 2019-01-29 交控科技股份有限公司 A kind of direct-current point machine control system and control method
CN109981006A (en) * 2019-03-27 2019-07-05 北京全路通信信号研究设计院集团有限公司 A kind of safe driving method of no node direct-current point machine and drive module
CN111746592A (en) * 2020-07-06 2020-10-09 北京全路通信信号研究设计院集团有限公司 Safe driving method and safe driving module for node-free three-phase alternating current point switch
CN112606869A (en) * 2020-12-28 2021-04-06 北京和利时系统工程有限公司 Point switch control device

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