CN117192162A - Alignment device and method of 39-core communication socket for railway passenger cars - Google Patents
Alignment device and method of 39-core communication socket for railway passenger cars Download PDFInfo
- Publication number
- CN117192162A CN117192162A CN202310592917.4A CN202310592917A CN117192162A CN 117192162 A CN117192162 A CN 117192162A CN 202310592917 A CN202310592917 A CN 202310592917A CN 117192162 A CN117192162 A CN 117192162A
- Authority
- CN
- China
- Prior art keywords
- pin
- detection
- communication
- detection signal
- core
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Train Traffic Observation, Control, And Security (AREA)
- Connections Arranged To Contact A Plurality Of Conductors (AREA)
Abstract
The invention relates to a device and a method for aligning a 39-core communication seat of a railway carriage. The device comprises a detection signal transmitting unit and a detection signal receiving unit, wherein the detection signal transmitting unit comprises a 39-core connector plug A, an optical coupler isolation driving circuit, a microcontroller A, a wireless serial port communication module, a power supply assembly A and a shell A; the detection signal receiving unit comprises a 39-core connector plug B, an operation keyboard, a nixie tube display module, a microcontroller B, a wireless serial communication module, an LED lamp detection circuit module, a power supply assembly B and a shell B. When the device is used for alignment, the detection signal transmitting unit and the detection signal receiving unit are connected with the 39-core communication seat of the tested vehicle end respectively, the wireless transceiver module is used for communication, and the microcontroller is used for transmitting and receiving detection signals; the operation keyboard sequentially detects a grounding contact pin and a communication contact pin of the communication seat; and checking the corresponding passage state according to the LED lamp. The detection efficiency is high, and the whole detection process can be completed by only one person.
Description
Technical Field
The invention relates to the field of power line detection, in particular to a device and a method for aligning a 39-core communication seat of a railway carriage.
Background
The railway passenger car realizes the communication full-row communication among the marshalling vehicles through the car end communication connector, is responsible for transmitting various information among the vehicles, such as information of broadcasting, various working conditions of the comprehensive control cabinet, axle reports and the like, and the 25T type passenger car also transmits film and television, smoke and fire, sliding plug doors, a bogie and brake pipe system information. The communication seat of the 25G/25T type common bus adopts a TL39AC500V/15TG type communication socket, namely a 39-core communication seat; the communication seat comprises signal wires such as a sliding plug door control wire, a 110V bus, a broadcasting wire, a shaft temperature alarm signal wire, an adjacent vehicle power supply control wire, a network communication wire and the like; the 4 corners of a single carriage are provided with 4 39-core communication connector seats, the communication connector seats are connected through wires, and the conducting connection relations of different vehicle types are different (but the communication connector seats and the plug types, the appearance and the sizes are consistent). In the process of overhauling and maintaining a passenger car, the polarities, the line numbers and the line sequences of all signal lines need to be checked one by one. The 39-core communication seat (TL 39AC500V/15TG type communication seat) works in a line-checking mode, because the number of core wires is large, two people need to use interphone and universal meter to cooperate with each other to perform line-checking on site, one person uses a wire to short-circuit a vehicle body at one end, the other person uses the universal meter to measure whether the wire is conducted with the vehicle body or not, and then the wire is checked with each other through the interphone; meanwhile, in actual overhaul, most empty wire bundles are aligned, and no tooling equipment and solution for satisfying the railway carriage communication seat test and carrying on-line test exist.
Disclosure of Invention
The invention provides a device and a method for aligning a 39-core communication seat of a railway carriage, wherein the 39-core communication seat alignment device needs to send a detection instruction by a detection signal sending unit, generates multiple paths of signals required by alignment, sends the multiple paths of signals to each pin of the communication seat, sends the signals to other communication seats through a communication cable, and then receives and displays a sender signal by a detection signal receiving unit; the signal transmitting device has the function of receiving instructions and can transmit signals according to the test requirements of overhauling personnel. At the signal receiving end, the signal receiving device can accurately display the wire number information and judge the cable faults, thereby achieving the purpose of testing. Specifically, the method of the invention is as follows:
an alignment device for a 39-core communications seat of a railway carriage, comprising:
the detection signal transmitting unit comprises a 39-core connector plug A, an optical coupler isolation driving circuit, a microcontroller A, a wireless serial port communication module, a power supply assembly A and a shell A;
the detection signal receiving unit comprises a 39-core connector plug B, an operation keyboard, a nixie tube display module, a microcontroller B, a wireless serial port communication module, an LED lamp detection circuit module, a power supply assembly B and a shell B;
each contact pin of the 39-core connector plug A is connected with 24-pin plugs of two optical coupling isolation driving circuits through wires; the detection signal transmitting unit is internally provided with 32 paths of optocoupler isolation driving circuits, the input ends of the optocoupler isolation driving circuits are connected with I/O ports of the microcontroller A, the output ends of the optocoupler isolation driving circuits are divided into two groups and are respectively connected with two 24-core sockets, and then the output ends of the optocoupler isolation driving circuits are connected with pins of 39-core plugs through 24-core plugs;
the tail end of each contact pin of the 39-core connector plug B is connected with the LED lamp detection circuit module through a wire; the signal input ports of the operating keyboard and the nixie tube display module are respectively connected with the I/O port of the microcontroller B through wires;
the power supply component A supplies power to the microcontroller A and the optocoupler isolation driving circuit; and the power supply component B supplies power to the microcontroller B and the LED lamp detection circuit module.
Further, the LED lamp detection circuit module comprises a grounding pin detection circuit and a communication pin detection circuit; the grounding pin detection circuit comprises 6 LED lamp branches, wherein the positive power supply of the grounding pin detection circuit is 3.6V, the power supply is connected with the anode of the LED lamp of the corresponding pin detection circuit after passing through a 1KΩ resistor, the cathode of the LED lamp is connected with the tail end of each grounding pin of the 39-core connector plug B, the 3.6V negative power supply is connected with the shell of the 39-core connector plug B, and the handle of the pull rod is pressed after the 39-core connector plug is inserted into the 39-core connector seat, namely, the shell of the 39-core connector plug B is connected with the vehicle body and the grounding pin to form a grounding detection loop; the common line of the communication pin detection circuit uses a 17-gauge needle; the detection signal transmitting unit is communicated with the communication contact pin detection circuit of the detection signal receiving unit after passing through the 39-core communication seat, the vehicle body through wire and the 39-core communication seat at the other end, a power supply is connected with the anode of the LED lamp, and the cathode of the LED lamp is connected with the 17-needle common line after being connected in parallel; and a pin 17 of a 39-core plug of the detection signal transmitting unit is connected with a pin 4 of the optical coupling isolation driving circuit and then is connected with a power supply of the detection signal transmitting unit to form a detection loop.
Further, the LED lamp detection circuit module further comprises a load detection circuit, and the load detection circuit comprises a power supply voltage stabilizing module and a comparison circuit module; the power supply voltage stabilizing module converts a 0.2-2.5V power supply into 5V power supply, and the comparison circuit module is connected with a 10-number needle and a 11-number needle, so that a 10-number needle or a 11-number contact pin passage can be accurately detected and displayed.
Further, the shell A is cuboid, an outer cover capable of being opened movably is arranged on one surface of the shell A, and an insulating layer is arranged inside the shell A; the side surface of the shell A is provided with a charging interface, a switch port and an antenna port, and the shell A is in threaded connection with the tail circular port of the 39-core connector plug A; the optocoupler isolation driving circuit, the microcontroller A, the wireless serial port communication module and the power supply assembly A are arranged and installed inside the shell A.
Further, the shell B is a cuboid, one surface of the shell B is provided with an outer cover which can be opened movably, and the surface of the shell B is provided with an LED lamp display panel, a digital display module and an operation keyboard; the LED lamp display panel is carved with a serial number corresponding to the 39-core socket; the shell B is in threaded connection with the tail round opening of the 39-core connector plug B; the side face of the shell B is provided with a charging interface, a switch opening and an antenna opening; the microcontroller B, a wireless serial port communication module,
The LED lamp detection circuit module and the power supply assembly B are arranged and installed inside the shell B.
Further, pin positions of an LED lamp arrangement panel in the LED lamp detection circuit module are in one-to-one correspondence with the positions of the 39-core communication connector seat panel, green LED lamps are used for pin detection circuits to be detected, unused red LED lamps are used, and yellow LED lamps are used for ground wires; and 2 paths of spare optical coupler isolation driving circuits are also arranged in the detection signal sending unit.
The alignment method of the alignment device of the 39 core communication seat of the railway carriage is to sequentially perform the detection of the grounding pin and the detection of the communication pin; the ground pin detection comprises the following steps:
s1.1, checking and confirming that a tested vehicle storage battery is disconnected, and detecting that a DC110V socket is electroless by using a universal meter direct current voltage gear;
s1.2, plugging the detection signal receiving unit and the vehicle end 39 core socket well, turning on a grounding detection power switch, observing the lighting condition of a corresponding grounding indicator lamp, wherein the lighting condition indicates that the corresponding stitch and the vehicle body are well grounded, and if the lamp is not lighted, the condition that the corresponding stitch and the vehicle body are not communicated is indicated to be further overhauled; closing the power switch after the grounding pin is detected;
the communication pin detection comprises the following steps:
s2.1, connecting a detection signal transmitting unit and a detection signal receiving unit with two 39-core communication seats of a tested vehicle end respectively, and switching on respective power supplies respectively;
s2.2, detecting one by one according to stitch numbers, firstly confirming that numbers displayed by a nixie tube display module are in an initial state, then inputting a to-be-detected stitch number through an operation keyboard, then observing whether a corresponding stitch number indicator lamp on a detection signal receiving unit is lightened, wherein the fact that the stitch number is correctly switched on is indicated by the lightening, if not, the fact that the stitch number is switched on is indicated, and if other stitch numbers are lightened, the fact that mixed wires are arranged between contact pins of a communication seat is indicated; sequentially detecting the needles with the number 39; meanwhile, the automatic detection function of the keyboard can be selected to realize automatic cycle detection of all pins, and special attention is paid to the fact that the pins 12, 17, 21, 24, 34 and 35 are grounding pins, the corresponding indicator lamp cannot be lightened, and the corresponding lamp suspended by 20 pins cannot be lightened. .
S2.3, each vehicle is provided with four 39-core communication sockets, communication sockets of different vehicle types comprise three connection modes of 'four inter-socket communication', 'same-side communication' and 'same-end communication', and the alignment is finished after the detection of all 39-core communication sockets to be detected is finished according to the different times and the different plugging positions of the different connection modes to be detected.
Further, in the detection of the grounding pins, the grounding pins corresponding to different vehicle types are different, and the grounding pins corresponding to the vehicle type 25G are 17-number and 24-number; the grounding pins corresponding to the 25T type are 12, 17, 21, 24 and 35; the grounding pins corresponding to the AC380V are 17-number and 21-number; the 17-number pin is a negative line of a connecting power supply used by the detection signal sending unit and the detection signal receiving unit together.
Further, the step S2.2 may be replaced by automatic cycle detection or direct check detection; the automatic cycle detection is carried out by using an operation keyboard to send detection instructions when the numbers displayed by the nixie tube display module are in an initial state, and a detection signal sending unit sequentially and automatically sends detection signals one by one according to stitch numbers until the number 39 is one period, and the automatic cycle is carried out; at this time, only the indication lamp of the detection signal receiving unit is required to be observed to be displayed correctly according to the sequence, if the corresponding indication lamp is not on, the corresponding stitch line is indicated to be faulty, and if the indication lamp is not displayed according to the corresponding sequence, the mixed line is indicated, and at this time, the judgment is carried out by using a manual detection mode; the direct checking detection is carried out by inputting a corresponding stitch number on the keyboard, and the detection signal sending unit can keep the output state unchanged at the moment, and the condition that the indication lamp of the detection signal receiving unit is on is observed to be corresponding to the input stitch number.
Further, the different vehicle types in the step S2.3 include 25T type, 25G type, adjacent vehicle power type and AC380V; pins that must be detected when detecting 25T are 6, 7, 8, 9, 10, 11, 15, 16, 18, 23, 29, 30, 31, 32; the pins which must be detected when detecting type 25G are 8, 9, 10, 11, 13, 14, 15, 16, 29, 30, 31, 32, 18, 23; pins which are required to be detected when detecting the AC380V type are 10, 11, 15 and 16; the pins which are required to be detected when the adjacent power supply type is detected are 8, 9, 10, 11, 13, 14, 22, 28, 18, 23, 29, 30, 31 and 32; the power supply type of the adjacent vehicle is provided with a 39-core communication socket with a 'same end communicated' connection mode, a 'same end communicated' of a No. 28 pin is realized, when the power supply type of the adjacent vehicle is detected, a detection signal transmitting unit is required to be inserted into one of the communication seats, a detection signal receiving unit is used for detecting the other three communication seats, then the detection signal transmitting unit is inserted into one of the communication seats at the first opposite end, the detection signal receiving unit is used for detecting the other communication seat at the same end, and one end of the vehicle body is replaced to the other end for detection after the detection is finished.
The working principle of the invention is as follows:
the detection signal receiving unit 2 uses the operation keyboard 22 to send detection instructions to the detection signal sending unit 1 through the wireless module, the microcontroller of the detection signal sending unit 1 controls the optocoupler isolation driving circuit to send signals according to received instruction requirements, the signals light the LED lamps at corresponding positions in the detection signal receiving unit 2 after passing through the 39-core communication seat of the detection signal sending unit 1, the connecting wires and the 39-core communication seat of the detection signal receiving unit 2, and an maintainer confirms whether the pin positions of the pin positions are correct according to whether the LED lamps at the positions are lighted or not, and the connecting wires or the pins are well connected without wire breakage or wire mixing.
The invention has the following beneficial effects:
the device is used for communication by using the wireless transceiver module when the device is used for line alignment, detection signals are sent and received through the microcontroller, the corresponding channel state is visually displayed through the LED lamp, the detection efficiency is high, and the whole detection process can be completed only by a single person.
Secondly, the device realizes the alignment of 39 core communication connection seats of various vehicle types, meets different test requirements among 4 communication seats, does not need to disconnect on-board equipment connected with the 39 core communication seats during alignment, only needs to disconnect a power supply, has various detection modes, can independently detect a certain wire through an operation keyboard, can also adopt an automatic scanning mode, and can judge whether faults such as mixed wires, broken wires and the like exist by only checking whether the lighting state of the LED lamp meets the normal state requirement of a communication seat conduction table or not.
The device adopts the connection mode that the input voltage is 5V and the on-load detection circuit is adopted for the pins with low impedance, so that the interference that high-impedance or low-impedance loads exist between the pins of the communication connection seat is overcome, and the on-line detection is comprehensively realized for all the pins.
Drawings
FIG. 1 is a diagram of the connection relationship of the device according to the present invention;
FIG. 2 is a perspective view of a detecting signal transmitting unit according to the present invention;
FIG. 3 is a perspective view of another angle of the detecting signal transmitting unit according to the present invention;
FIG. 4 is a bottom view of the detection signal transmitting unit according to the present invention;
FIG. 5 is a perspective view of a detecting signal receiving unit according to the present invention;
FIG. 6 is a top view of the detecting signal receiving unit according to the present invention;
FIG. 7 is a bottom view of the detection signal receiving unit according to the present invention;
fig. 8 is a circuit diagram of a vehicle model 25gde 39 core plug and an indicator light according to the present invention.
In the figure:
1-a detection signal transmitting unit, 11-39 core connector plugs A, 12-a charging interface, 13-an antenna and 14-a power switch;
2-detecting signal receiving unit, 21-39 core connector plug B, 22-operating keyboard, 23-nixie tube display module and 24-LED lamp detecting circuit module.
Detailed Description
In order to make the technical means, the creation characteristics and the achievement of the purposes of the present invention easy to understand, the following describes the technical scheme of the present invention further in connection with the embodiments and the specific embodiments of the alignment device and the method of the communication seat of the railway carriage 39 core provided by the present invention.
As shown in fig. 1-8, the specific examples given for the present invention are as follows:
the alignment device of the railway carriage 39 core communication seat comprises a detection signal transmitting unit 1 and a detection signal receiving unit 2. The detection signal transmitting unit 1 comprises a 39-core connector plug A11, an optical coupling isolation driving circuit, a microcontroller A, a wireless serial port communication module, a power supply assembly A and a shell A. The detection signal receiving unit 2 comprises a 39-core connector plug B21, an operation keyboard 22, a nixie tube display module 23, a microcontroller B, a wireless serial communication module, an LED lamp detection circuit module 24, a power supply component B and a shell B.
The detection signal sending unit 1 is characterized in that a shell A is a rectangular shell manufactured by adopting a sheet iron box, an insulating rubber is stuck inside the shell to protect the shell A, the front surface is of a cover type structure, a hinge and a hasp are adopted to lock the shell A, and a ship type power switch 14 is installed and fixed on a hasp side through a hole; two battery charging ports are reserved on the other side, an output line of the charger is inserted into the TYP-C charging module during charging, the charging line is removed after the charging is fully charged, an antenna 13 port of the wireless communication module is reserved on the other side, and the wire is arranged outside the metal shell, so that the normal receiving of wireless signals is ensured. Rectangular holes are formed on the right upper side and the bottom side of the shell of the detection signal sending unit 1, the periphery of the holes is protected by insulating adhesive tapes, and wires connected with the 39-core connector plug A11 of an optical coupler isolation driving circuit penetrate through the middle; the shell of the detection signal transmitting unit 1 is connected with the tail round opening of the end of the 39-core connector plug A11 through a spiral clamp, the upper end of the spiral clamp is in a circular pipe shape and is in an inner spiral shape, the lower end of the spiral clamp is a semicircular clamp, and the semicircular clamp is connected and fixed with the shell through a screw, so that the 39-core connector plug A11 and the shell A form a whole to serve as the detection signal transmitting unit 1.
The detection signal transmitting unit 1 is internally provided with an upper layer, a middle layer and a lower layer, pin-arranging sockets are used for plugging, the upper layer and the lower layer are respectively provided with an optical coupler isolation driving circuit by using hole plates and related electronic elements, the upper layer and the lower layer are connected with 39-core plug wires through 2 24-pin connection sockets and plugs, two charging modules are fixed on the surface of the upper layer optical coupler isolation driving circuit board, the input ends of the two charging modules are respectively connected with a 18650 battery box through two-pin plugs and wires, and the output ends of the two charging modules are connected with the optical coupler isolation driving circuit or a stm32F407vet6 core board through wires. And the middle layer is provided with a stm32F407vet6 core board which is spliced with the upper and lower optocoupler isolation driving circuit boards. The detection signal transmitting unit 1 has a battery and a battery case space left below the inside of the case a, and the battery case is fixed by bolts.
The 39-core connector plug A11 uses a communication connector plug which is matched with a 39-core communication connector seat of the railway carriage, namely a female pin end, namely a male pin end; the whole body is assembled by a shell, a contact pin and a clamp spring; each contact pin is connected with 24-pin plugs of two optocoupler isolation driving circuits through wires. The optocoupler isolation driving circuit consists of an optocoupler (P521), a PNP triode (2N 5401) and a resistor (1 KΩ/5 KΩ/330 Ω); the detection signal transmitting unit 1 is internally provided with 34 paths of optical coupler isolation driving circuits, wherein 2 paths of optical coupler isolation driving circuits are used as standby, the input ends of the optical coupler isolation driving circuits are connected with I/O ports of the microcontroller A, the output ends of the optical coupler isolation driving circuits are divided into two groups and are respectively connected with two 24-core sockets, and then the output ends of the optical coupler isolation driving circuits are connected with pins of 39-core plugs through wire welding.
The micro controller A is a singlechip STM32F407 minimum system board, and the core board is STM32F407vet6. The I/O port of the stm32F407vet6 core board is connected with a1 pin (anode) of an optical coupler input end through a 1KΩ resistor, and a 2 pin (cathode) of the optical coupler input end is connected with cathodes of other optical coupler input ends in parallel and then connected with a 3.3V power supply cathode; the output end 4 pin of the optocoupler is connected with the base electrode of the triode through a 5KΩ bias resistor; the +5V power supply is connected with the collector of the triode, the emitter of the triode is connected with a 24-pin socket after passing through a 330 omega resistor, and the plug pin of the 24-pin socket is connected with the pin of the 39-core plug through a wire by wire welding. The 3.3V signal output by the I/O port of the stm32F407vet6 core board lights the light emitting tube of the optocoupler to conduct the secondary end of the optocoupler, so that the collector electrode and the emitter electrode of the triode are conducted, and a DC5V positive power supply is connected through the collector electrode, the emitter electrode, a 330 omega current limiting resistor and a male pin of a 39-core connector plug of the triode after the triode is conducted.
The stm32F407vet6 core board in the detection signal transmitting unit 1 receives the test instruction of the detection signal receiving unit 2 through the wireless receiving module, outputs high-level signals from the I/O port according to the software control code sequence written in the stm32F407vet6 core board, and is connected to the optocoupler driving circuit. The communication serial port of the (1) is connected with a wireless communication module of a signal transmitting end, the I/O port of the stm32F407vet6 core board is connected with an optical coupling isolation driving circuit, and the DC5V power input port of the stm32F407vet6 core board is connected with a power supply component A in the detection signal transmitting unit 1.
The wireless serial port communication module comprises a communication module and an antenna 13, wherein the antenna 13 and the module are spliced by adopting a special antenna 13 connecting port. The wireless serial communication module is used for wireless communication between the detection signal sending unit 1 and the detection signal receiving unit 2. The wireless serial communication module in the detection signal sending unit 1 is connected with the stm32F407vet6 core board communication serial port in the detection signal sending unit 1. The 3.3V power supply of the wireless serial communication module is introduced from the lead welding of the 3.3V power supply port of the stm32F407vet6 core board in the detection signal transmitting unit 1.
The power supply assembly A is composed of two 18650 lithium batteries, a battery box (4.1V after 3.7V charging), two battery charging modules and a power switch 14. The TYPE-C charging module is used for charging the battery by using an external AC220V to DC5V charger. When the battery is discharged, 2 paths of DC5V power supplies are output, one path supplies power to the stm32F407vet6 core board through a switch, the other path supplies power to +5V of the optocoupler isolation driving circuit, and the other path is connected with a collector electrode of the driving circuit of the optocoupler isolation driving circuit through a lead. The power switch 14 adopts a two-way ship-shaped switch, is connected in series with +5V output ends of the two charging modules, one way provides a + -5V power supply to the stm32F407vet6 core board, the other way provides power to +5V of the optocoupler isolation driving circuit, is connected with a collector electrode of the driving circuit of the optocoupler isolation driving circuit through a lead, and the negative end is connected with an optocoupler cathode of the optocoupler isolation driving circuit.
The shell B of the detection signal receiving unit 2 is made of PLA degradable material, the front surface of the shell is of a cover type structure, the shell is perforated and tightly closed by self-tapping screws, the surface of the shell is divided into an upper layout, a middle layout and a lower layout, and the upper area is also integrally provided with a three-way circular arc-shaped enclosure, so that the LED lamp on the surface is not influenced by reflection of light, and the light-emitting state of the LED lamp can be clearly seen by an maintainer; the upper area is arranged with LED lamp display board from top to bottom according to the layout position of the pins of the 39 core sockets of the railway carriage, and the numbers of the 39 core sockets are carved below the LED lamps and marked by white paint. The middle adopts a hole opening mode, and an 8-bit digital display tube is arranged; the lower region is fixed with a 4*4 keyboard by adopting an opening mode.
A round hole is formed on the right upper side of the shell B of the detection signal receiving unit 2 near the bottom side and is reinforced, and a lead wire connected with the 39-core plug of the LED detection circuit passes through the middle; the shell of the detection signal receiving/controlling unit is connected with the tail round opening of the end of the 39-core connector plug B21 by using a spiral clamp, the upper end of the spiral clamp is in a round pipe shape and is in a spiral shape, the lower end of the spiral clamp is a semicircle clamp, and the semicircle clamp is connected and fixed with the shell by using a screw, so that the 39-core connector plug B21 and the shell B of the detection signal receiving unit 2 form a whole and serve as the detection signal receiving unit 2.
The detection signal receiving unit 2 is characterized in that an upper layer and a lower layer are arranged in the shell B, the upper layer and the shell cover form a whole, an LED lamp detection circuit is manufactured by a hole plate and related electronic elements and is connected with a plug pin of a 39-core connector plug B21 through a wire in a welding mode, the LED lamp displays lamp beads on the surface through 39 reserved holes of the upper layer cover body, and a nixie tube and a keyboard also penetrate from the inside of the shell cover to the surface of the shell cover and are fixed. The lower layer of the shell is provided with a microcontroller B, namely a singlechip STM32F407 minimum system board (the core board used is STM32F407vet 6), a power supply component B, a wireless serial communication module and an antenna 13; the power module B comprises a battery box and a charging module. The two charging modules are fixed at the bottom of the shell, are fixed at the upper layer and the lower layer, are arranged beside the wireless communication modules, and are arranged and fixed at the right side of the shell after the antenna 13 of the wireless communication module is connected with the modules. Two boat-shaped power switches 14 are installed on the holes in the bottom of the shell.
The model numbers of the 39-core connector plug B21 and the 39-core connector plug A11 are the same, and the tail end of each contact pin is connected with the LED lamp detection circuit module 24 through a wire; the signal input ports of the operation keyboard 22 and the nixie tube display module 23 are respectively connected with the I/O port of the microcontroller B through wires. The keypad 22 is a 4*4 matrix keypad having a total of sixteen keys with the numbers 0-9, #, A, B, C, D ". The matrix keyboard and the nixie tube display module 23 form a man-machine interaction interface, the keyboard receives the wire number input by a user or an automatic test instruction in real time, and simultaneously displays the wire number and the instruction on the nixie tube, and the wire number and the instruction are sent to the end of the detection signal sending unit 1 through the singlechip stm32F407vet6 core board by the wireless serial communication module. The wireless serial communication module in the detection signal receiving unit 2 is identical to that in the detection signal transmitting unit 1. The wireless serial communication module in the detection signal receiving unit 2 is connected with the communication serial port of the stm32F407vet6 core board inside the detection signal receiving unit 2. The 3.3V power supply of the wireless serial communication module is introduced from the welding of a 3.3V power supply port wire of a stm32F407vet6 core board inside the end of the detection signal receiving unit 2.
The LED lamp detection circuit module 24 includes a ground pin detection circuit and a communication pin detection circuit; and each pin connected with the 39-core plug receives a DC5V signal to enable the corresponding LED lamp to be lighted, so that the line sequence and the good passage of the pins are judged. The stitch definition that ordinary 25G type passenger train and 39 core seats of 25T type used is different, and partial stitch does not need to detect in actual maintenance in-process, and the green LED lamp is used to the stitch detection circuit that needs to detect, and unused uses red LED lamp, yellow LED lamp is used to the ground wire for the user's checking and confirming of being convenient for. The grounding pin detection circuit is provided with 6 LED lamp branches, the positive power supply of the grounding pin detection circuit is 3.6V, the positive power supply is connected with the anode of the LED lamp of the corresponding pin detection circuit after passing through a 1KΩ resistor, the cathode of the LED lamp is connected with the tail end of each grounding pin of the 39-core connector plug B21, the 3.6V negative power supply is connected with the shell of the 39-core connector plug B21, and the handle of the pull rod is pressed after the 39-core connector plug is inserted into the 39-core socket, namely the shell of the 39-core connector plug B21 is connected with the car body and the grounding pin to form a grounding detection loop; the method comprises the steps of carrying out a first treatment on the surface of the The 39 core sockets of different vehicle types are all provided with grounding pins (the pins of 12, 17, 21, 24 and 35 comprise the grounding pins of all vehicle types on the 39 core through seat), after the detection signal receiving unit 2 is plugged in, a grounding detection switch is started, the grounding pins corresponding to different vehicle types detect the lighting of LED lamps (yellow display), and the 39 core communication seat grounding pins are well grounded.
The common line of the communication pin detection circuit uses a 17-gauge needle (all vehicle types are grounded and communicated); DC5V output by the detection signal transmitting unit 1 passes through a 39-core communication seat, a vehicle body through wire and a 39-core communication seat at the other end and then reaches a communication contact pin detection circuit of the receiving end detection signal receiving unit 2, the DC5V is connected with an anode of an LED lamp from a contact pin, a cathode of the LED lamp is connected with a 17-pin common line after being connected in parallel, and a 17-pin of a 39-core plug of the detection signal transmitting unit 1 is connected with a 4-pin of an optocoupler isolation driving circuit and then is connected with-5V of a charging module 2 of the detection signal transmitting unit 1 to form a detection loop. Meanwhile, in order to facilitate the operator to check and confirm the state and the stitch position of the LED lamp, the stitch position of the arrangement panel of the LED lamp of the detection circuit corresponds to the position of the panel of the 39-core communication connector base one by one. (7 upper and lower rows of 39 LED lamps).
The LED lamp detection circuit module 24 further includes a load detection circuit, and besides the mutual communication between the communication connector seats of the 39 cores of the railway carriage, some communication lines are connected with the load on the carriage, except that the impedance between the 10 pins and the 11 pins of the broadcasting line is small (with a loudspeaker), the measurement can be affected, the impedance between the pins connected with other loads is large, the input voltage is only 5V, the measurement is not affected (the phenomenon that two LED lamps are not simultaneously lightened at the receiving end), and the direct on-line measurement can be realized.
For example: the impedance between the 10 needles and the 11 needles of the broadcasting wire of the 39-core communication seat of the 25T-type passenger car is only 18-36 ohms, when the signal transmitting plug transmits DC5V to the 10-number or 11-number needles, the 10-number and 11-number detection LED lamps corresponding to the receiving plug end are simultaneously on after passing through the on-board cable, and the 11-number detection LED lamps can not accurately distinguish whether the 10-number or the 11-number detection LED lamps are the 10-number or the 11-number detection LED lamps, so that a signal processing circuit with load between the 10-number and the 11-number needles is added in the LED lamp detection circuit.
The load detection circuit uses an LM339 voltage comparison circuit to realize load detection under the condition of small load. The power supply consists of a 0.2-2.5V-to-5V power supply module and an LM339 comparison circuit. No. 10 or No. 11 output electric signals, only about 2V voltage is applied to the receiving end after passing through the on-board cable, the LED lamp can be lightened, but the stable work of the LM339 cannot be supported, so that No. 10 or No. 11 supplies power to the input end of the 5V power supply module after passing through the diode, and a stable DC5V working power supply (the LM339 is unstable when working below 5V) is provided for the LM339 chip. The voltage difference between the two input ends of the LM339 comparison circuit is larger than 10mv, so that the output can be reliably switched from one state to the other state, and the LM339 comparison circuit is suitable for weak current signal detection occasions. A low-impedance load is connected in parallel between the 10-th pin and the 11-th pin, when a DC5V signal is sent to the 10-th pin, a signal is input to the 11-th pin of the receiving end, but a voltage difference is necessarily generated between the signal input and the 10-th line voltage of the receiving end (the 10-th voltage is higher and the 11-th voltage is lower), and the two input ends of the LM339 are inevitably changed in output state. For example, the transmitting end transmits a signal to 10, the inverting input pin 4 (connected with the number 10) of the receiving end LM339 is higher than the positive input pin 5 (11), and the corresponding output pin 2 is at low level, and the LED10 is lighted. If the transmitting end transmits a signal to 11, the inverting input pin 6 (No. 11) of the receiving end LM339 is higher than the forward input pin 7 (No. 10), the corresponding output pin 1 is low, and the LED11 lights. The 10 or 11-gauge pin passageway is detected and displayed more accurately through the above. Similarly, the LM339 comparator circuit is used for detecting load, and other small-load and small-voltage load detection methods are also used.
Further, pin positions of the LED lamp arrangement panel in the LED lamp detection circuit module 24 correspond to the positions of the 39-core communication connector seat panel one by one, green LED lamps are used for pin detection circuits to be detected, unused red LED lamps are used, and yellow LED lamps are used for ground wires; and 2 paths of spare optical coupler isolation driving circuits are also arranged in the detection signal sending unit 1.
The power supply component B is composed of two 18650 type lithium batteries and a battery box (the voltage can reach 4.1V after 3.7V is charged), two battery charging modules and a power switch (14) which independently form two groups of power supplies. The TYPE-C charging module is used for charging the battery by using an external AC220V to DC5V charger. The power circuit is formed by a battery, a battery box, a charging module and a switch and supplies power for the grounding pin detection circuit. The other group of batteries, the battery box and the charging module form a power circuit, and the switch supplies power for the communication contact pin detection circuit and the load detection circuit to provide a DC5V power supply. The power switch 14 adopts a single ship-shaped switch, is connected in series with +5V output ends of two charging modules, one path is used for supplying power for the 'grounding pin detection circuit', and the other path is used for supplying power for the communication pin detection circuit and the load detection circuit.
The alignment method of the alignment device of the 39 core communication seat of the railway carriage is to sequentially perform the detection of the grounding pin and the detection of the communication pin; the ground pin detection includes the following steps:
s1.1, checking and confirming that a tested vehicle storage battery is disconnected, and detecting that a DC110V socket is electroless by using a universal meter direct current voltage gear;
s1.2, the detection signal receiving unit 2 is well spliced with a core socket at the vehicle end 39, the grounding detection power switch 14 is turned on, the lighting condition of a corresponding grounding indicator lamp is observed, the lamp is lighted to indicate that the grounding of a corresponding stitch and a vehicle body is good, and if the lamp is not lighted, the fact that the corresponding stitch is not communicated with the vehicle body is required to be overhauled further is indicated; closing the power switch 14 after the detection of the grounding pin is finished; different vehicle types and different stitch communicated with the vehicle body, and the same indicator lights are lightened differently. The "17" pin is the negative line of the connection power used by the transmitting device and the receiving device together. The following is a pin correspondence table of the pins of the 39 core sockets of the existing three railway carriages communicated with the carriage body.
The communication pin detection comprises the following steps:
s2.1, connecting the detection signal transmitting unit 1 and the detection signal receiving unit 2 with 39 core communication seats of the tested vehicle end respectively, and switching on respective power supplies respectively;
s2.2, detecting the numbers one by one according to the stitch numbers, firstly, confirming that the numbers displayed by the nixie tube display module 23 are the power switch 14 in the initial state, and confirming that the '0000' is displayed on the rear 4 bits of the nixie tube (the front 4 bits are not used). Then, the detection operation is started, and the first method is that the manual operation keyboard 22 starts to detect one by one from the 1 pin, namely, firstly, the keyboard 1 is pressed, the nixie tube displays 0001 at the moment, then whether the No. 1 indicator lamp of the detection signal receiving unit 2 is lightened or not is observed, the lighting indicates that the No. 1 wire between two 39 core sockets is correspondingly connected correctly, the lighting indicates that the wiring between the two sockets is not connected (i.e. indicates disconnection), and if the receiving end is provided with other indicator lamps, the lighting indicates that the contact pins of the communication seat are mixed. After the detection of the 1 stitch is finished, the key of the keyboard is pressed once to detect the 2 stitch, at the moment, the nixie tube displays 0002, whether the 2 indicator lamp is lighted or not is observed, and the judgment is the same as the above. The 3 stitches are sequentially detected by pressing the "×" number key again, and the same is sequentially operated until the 39-gauge needle. It should be noted that the pins 12, 17, 21, 24, 35 are ground pins, the corresponding indicator light will not be on, and the corresponding light suspended by the pin 20 will not be on.
The second method is automatic cycle detection, in which the keyboard "A" key is pressed once in the state of the nixie tube displaying "0000", namely, the detection signal is automatically sent from "1", and the detection signal is automatically increased in sequence until 39 is a period, and the automatic cycle is performed. At this time, only need to pay attention to observe whether the receiving device pilot lamp corresponds correctly in order to reveal correctly, if the pilot lamp that should lighten is not lightened, reveal the corresponding stitch circuit has trouble, if reveal in order, reveal mixed line in order, should change the manual detection mode to judge at this moment;
the third method is to directly detect a certain line, only the corresponding pin number (1-9 is directly pressed to the corresponding number key, the second digit is required to be quickly input when 10-39 is selected, otherwise, the corresponding number is required to be displayed by the nixie tube according to the second time, and the output state of the detection signal transmitting unit 1 is kept unchanged).
The four 39-core communication sockets of each vehicle are communicated with each other, the same side is communicated with each other and the same end is communicated with each other according to different vehicle types, so that the complete detection can be realized only by two circulation detection. The detection signal transmitting unit 1 is arbitrarily inserted into one communication seat for the first time, and the detection signal receiving unit 2 is used for detecting the other three communication seats; and secondly, carrying out secondary detection according to the condition of 'same-side communication' or 'same-end communication' of the vehicle type. For example, the positions of fixed plugs of different vehicle types are different, and the detection method of the vehicle type with adjacent vehicle power supply is as follows, the detection signal transmitting unit 1 is inserted into a communication seat at one end for all detection once, and then the communication seat must be replaced to the other end for all detection once, because 2 wires (namely, the No. 22 and No. 28 pins) are communicated between the same-end 39 core sockets of the vehicle type with adjacent vehicle power supply, and no detection is missed. The other vehicle type detection signal transmitting units 1 only need to perform plugging detection on two communication sockets at the same end. The following are detection standards for various common vehicle types.
The lamp which must be lighted is that the vehicle type must be measured according to the maintenance standard, and the lamp which can be lighted is that the vehicle type communication seat is provided with a cable, but the measurement is not required, and the needles are detected during automatic detection.
It is to be understood that the above-described embodiments of the present invention are merely illustrative of or explanation of the principles of the present invention and are in no way limiting of the invention. Accordingly, any modification, equivalent replacement, improvement, etc. made without departing from the spirit and scope of the present invention should be included in the scope of the present invention. Furthermore, the appended claims are intended to cover all such changes and modifications that fall within the scope and boundary of the appended claims, or equivalents of such scope and boundary.
Claims (10)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310592917.4A CN117192162B (en) | 2023-05-24 | 2023-05-24 | Connection device and method for 39-core communication socket in railway passenger cars |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310592917.4A CN117192162B (en) | 2023-05-24 | 2023-05-24 | Connection device and method for 39-core communication socket in railway passenger cars |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN117192162A true CN117192162A (en) | 2023-12-08 |
| CN117192162B CN117192162B (en) | 2025-12-02 |
Family
ID=88982477
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310592917.4A Active CN117192162B (en) | 2023-05-24 | 2023-05-24 | Connection device and method for 39-core communication socket in railway passenger cars |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117192162B (en) |
Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101944002A (en) * | 2010-08-26 | 2011-01-12 | 北京航空航天大学 | Gain adjustable multifunctional data acquisition card |
| CN203217028U (en) * | 2013-05-08 | 2013-09-25 | 国家电网公司 | Automatic core joint marking device for cable |
| CN103869204A (en) * | 2013-07-05 | 2014-06-18 | 山东电力集团公司青岛供电公司 | Cable core line aligner |
| CN203673024U (en) * | 2014-01-26 | 2014-06-25 | 国家电网公司 | Alignment circuit of multi-core cable |
| CN106100701A (en) * | 2016-08-10 | 2016-11-09 | 贵州大学 | It is applicable to the power carrier communication device of printer |
| CN207263872U (en) * | 2017-10-26 | 2018-04-20 | 国网安徽省电力公司岳西县供电公司 | A kind of substation secondary cable sorter |
| CN208443947U (en) * | 2018-04-25 | 2019-01-29 | 国网山东省电力公司菏泽供电公司 | A new type of intelligent multi-function calibration instrument based on coded communication |
| CN112649760A (en) * | 2020-11-25 | 2021-04-13 | 国网福建省电力有限公司安溪县供电公司 | Single portable accuse cable is to traditional thread binding putting |
| CN113552508A (en) * | 2021-08-23 | 2021-10-26 | 沈阳铁路信号有限责任公司 | Separable cable multi-core alignment device and method based on zigbee technology |
| CN113985317A (en) * | 2021-09-29 | 2022-01-28 | 中国铁路通信信号上海工程局集团有限公司 | Intelligent number checking device |
| CN217085233U (en) * | 2021-12-30 | 2022-07-29 | 国网河南省电力公司超高压公司 | Multifunctional cable secondary line calibration instrument |
| CN217766788U (en) * | 2022-05-31 | 2022-11-08 | 昆明铁路局集团科学技术研究所 | Motor train unit control connector through detection test equipment |
| CN220019671U (en) * | 2023-05-24 | 2023-11-14 | 中国铁路昆明局集团有限公司昆明车辆段 | Alignment device for 39-core communication seat of railway carriage |
-
2023
- 2023-05-24 CN CN202310592917.4A patent/CN117192162B/en active Active
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101944002A (en) * | 2010-08-26 | 2011-01-12 | 北京航空航天大学 | Gain adjustable multifunctional data acquisition card |
| CN203217028U (en) * | 2013-05-08 | 2013-09-25 | 国家电网公司 | Automatic core joint marking device for cable |
| CN103869204A (en) * | 2013-07-05 | 2014-06-18 | 山东电力集团公司青岛供电公司 | Cable core line aligner |
| CN203673024U (en) * | 2014-01-26 | 2014-06-25 | 国家电网公司 | Alignment circuit of multi-core cable |
| CN106100701A (en) * | 2016-08-10 | 2016-11-09 | 贵州大学 | It is applicable to the power carrier communication device of printer |
| CN207263872U (en) * | 2017-10-26 | 2018-04-20 | 国网安徽省电力公司岳西县供电公司 | A kind of substation secondary cable sorter |
| CN208443947U (en) * | 2018-04-25 | 2019-01-29 | 国网山东省电力公司菏泽供电公司 | A new type of intelligent multi-function calibration instrument based on coded communication |
| CN112649760A (en) * | 2020-11-25 | 2021-04-13 | 国网福建省电力有限公司安溪县供电公司 | Single portable accuse cable is to traditional thread binding putting |
| CN113552508A (en) * | 2021-08-23 | 2021-10-26 | 沈阳铁路信号有限责任公司 | Separable cable multi-core alignment device and method based on zigbee technology |
| CN113985317A (en) * | 2021-09-29 | 2022-01-28 | 中国铁路通信信号上海工程局集团有限公司 | Intelligent number checking device |
| CN217085233U (en) * | 2021-12-30 | 2022-07-29 | 国网河南省电力公司超高压公司 | Multifunctional cable secondary line calibration instrument |
| CN217766788U (en) * | 2022-05-31 | 2022-11-08 | 昆明铁路局集团科学技术研究所 | Motor train unit control connector through detection test equipment |
| CN220019671U (en) * | 2023-05-24 | 2023-11-14 | 中国铁路昆明局集团有限公司昆明车辆段 | Alignment device for 39-core communication seat of railway carriage |
Non-Patent Citations (1)
| Title |
|---|
| 李寒生;黄南;王君君;: "基于STM32F103的多线芯电缆自适应对线器设计", 电子技术应用, no. 05, 31 December 2015 (2015-12-31) * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN117192162B (en) | 2025-12-02 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101598759B (en) | Method for detecting electric connectors of satellite ground power supply and distribution test equipment | |
| CN204731364U (en) | A kind of portable polycore cable distribution tester | |
| CN103913603A (en) | Test adaptor of electric connector | |
| WO2020181656A1 (en) | Building-block type electric automobile direct-current charging facility detection device | |
| CN202854270U (en) | A circuit test device for a signal transmission line | |
| CN203164211U (en) | Electric connector test adapter | |
| CN220019671U (en) | Alignment device for 39-core communication seat of railway carriage | |
| CN203688694U (en) | Serial port connecting line detection circuit | |
| CN200986582Y (en) | Communication cable integration integrated test device | |
| CN117192162B (en) | Connection device and method for 39-core communication socket in railway passenger cars | |
| CN101846728B (en) | Incoming inspection device of power battery for hybrid electric vehicle and inspection method | |
| CN116679088A (en) | Portable integrated tester for detecting electric performance of cable connector assembly | |
| CN207263872U (en) | A kind of substation secondary cable sorter | |
| KR102576218B1 (en) | Patch panel for displaying information | |
| CN205067645U (en) | Cable school is traditional thread binding puts | |
| CN208140812U (en) | A kind of traction convertor function test device | |
| CN219552626U (en) | Network cable tester | |
| CN208043982U (en) | A kind of batteries of electric automobile packet voltage acquisition line detecting system | |
| CN218727677U (en) | Nuclear power station nuclear island low-voltage alternating-current distribution board test device | |
| CN214954680U (en) | Automobile OBD interface converter | |
| CN222671439U (en) | CR200J EMUs safety loop test device | |
| CN109686201A (en) | A kind of practice-training teaching power battery of pure electric automobile management system | |
| CN220553210U (en) | Whole vehicle data detection device based on automobile teaching | |
| CN207798992U (en) | A kind of line bank tester | |
| CN223180391U (en) | Cable detection device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |