CN212275930U - Detection device for detecting on-line railway grounding loop cable on-off - Google Patents
Detection device for detecting on-line railway grounding loop cable on-off Download PDFInfo
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- CN212275930U CN212275930U CN202020669560.7U CN202020669560U CN212275930U CN 212275930 U CN212275930 U CN 212275930U CN 202020669560 U CN202020669560 U CN 202020669560U CN 212275930 U CN212275930 U CN 212275930U
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Abstract
The utility model discloses a detection apparatus for be used for detecting online railway ground return circuit cable break-make, including epitheca, inferior valve and curb plate, the epitheca passes through the axis of rotation and is connected with the inferior valve, and the epitheca can be followed the axis of rotation and opened and closed, work as the epitheca with form a circular shape centre gripping hole when the inferior valve is closed, the mounting groove has been seted up on the epitheca, go up and install in the mounting groove and measure the magnetic core, set up down mounting groove on the inferior valve, install down in the mounting groove and measure magnetic core and PCB board, it is equipped with and gets electric measuring coil to measure the magnetic core outside cover down, get electric measuring coil with PCB board electric connection, the curb plate is provided with two, two the curb plate covers respectively and establishes on mounting groove and lower mounting groove. The utility model discloses simple structure can know the railway ground connection cable break-make condition in real time through this detection device, reduces artifical patrol, in time discovers the trouble, ensures railway system's safe operation.
Description
Technical Field
The utility model relates to a detection device specifically is a detection device for detecting online railway ground return circuit cable break-make.
Background
The high-speed railway traction network takes a steel rail and the ground as a return lead of traction current. An earth return line exists between the steel rail and the ground, the return current of the steel rail is larger due to fault disconnection of the earth return line, the rail potential of the steel rail can rise, and the safety of people and electrified railway system equipment is threatened.
At present, no effective professional device is used for detecting the on-off of the grounding return line on line, manual patrol is needed, the working strength of patrol workers is increased, and faults cannot be found in time to ensure the safe operation of a railway system.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a detection device for detecting online railway ground connection return circuit cable break-make possesses simple structure, can know the railway ground connection cable break-make condition in real time through this detection device, reduces artifical patrol, in time discovers the trouble, ensures railway system's safe operation's advantage, has solved the problem that above-mentioned technical background proposed.
In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a detection apparatus for be used for detecting online railway ground return circuit cable break-make, detection apparatus includes epitheca, inferior valve and curb plate, the epitheca passes through the axis of rotation and is connected with the inferior valve, and the epitheca can be followed the axis of rotation and opened and closed, work as the epitheca with form a circular shape centre gripping hole when the inferior valve is closed, the mounting groove has been seted up on the epitheca, install in the mounting groove and measure the magnetic core, the mounting groove has been seted up down on the inferior valve, install down in the mounting groove and measure magnetic core and PCB board, measure the magnetic core outside cover down and be equipped with and get electric measuring coil, get electric measuring coil with PCB board electric connection, the curb plate is provided with two, two the curb plate covers respectively and establishes on mounting groove and lower mounting.
Preferably, the upper shell is provided with a hook, and the lower shell is provided with a buckle matched with the hook.
Preferably, a spring piece is arranged in the upper mounting groove, the spring piece is in a V shape, and the spring piece is in contact connection with the upper measuring magnetic core.
Preferably, the upper measurement core has the same size as the lower measurement core, and both ends of the upper measurement core are in contact connection with both ends of the lower measurement core when the upper case and the lower case are closed.
Preferably, the upper measuring magnetic core and the lower measuring magnetic core are both made of high-permeability iron cores.
Preferably, the PCB board is including getting electric and current coil switching circuit, getting electric management circuit, current detection circuit and main control chip, main control chip respectively with get electric and current coil switching circuit, get electric management circuit and current detection circuit electric connection.
Preferably, the power-taking and current coil switching circuit is composed of a power-taking/current coil input end P1, a RELAY1 and a RELAY2, and the power-taking/current coil input end P1 is connected with the RELAY1 and the RELAY2 respectively.
Preferably, the Power-taking management circuit comprises a Power-taking input end Power A, a Power-taking input end Power B, a rectifier bridge composed of diodes D-D, MOS (metal oxide semiconductor) tubes Q-Q, a triode Q, a boosting Power management chip U, a debuggeable precision parallel regulator U, a comparator U, a resistor R-R, a capacitor C-C, a capacitor C, an inductor L, a rectifier diode D and a diode D-D, wherein the capacitor C is a super capacitor, the Power-taking input end Power A and the Power-taking input end Power B are respectively connected with the rectifier bridge composed of the diodes D-D, the resistor R, the capacitor C and the capacitor C are respectively connected with the MOS tubes Q, the capacitor C and the MOS tubes Q are connected in parallel, the MOS tubes Q are respectively connected with the capacitor C, the resistor R, the rectifier diode D and the diode D-D, the boosting power supply management chip U1 is respectively connected with a resistor R3-R5, a capacitor C3-C4, a capacitor C7-C8 and an inductor L1, the MOS tube Q3 is respectively connected with a capacitor C19, a resistor R6 and a triode Q4, the input end of the triode Q4 is connected with a resistor R7, and the comparator U3 is respectively connected with a resistor R8-R16 and an adjustable precise parallel regulator U2.
Preferably, the Current detection circuit comprises a Current signal input end Current a and a Current signal input end Current B which are connected with the power taking and Current coil switching circuit, a resistor R17, a rectifier diode D9 and a filter network circuit composed of a capacitor C9, a resistor R19, a resistor R18 and a capacitor C10 are connected to the Current signal input end Current a and the Current signal input end Current B, the Current detection circuit further comprises an AD detection end connected with the main control chip, and the AD detection end is connected with the filter network circuit.
Preferably, the main control chip is a single chip microcomputer, and the model of the main control chip is STM32L 053.
Compared with the prior art, the beneficial effects of the utility model are as follows:
1. the utility model provides a detection device easy operation only needs to wait to detect the railway ground circuit cable card that detects downthehole at the centre gripping, alright detect it, and detection device adopts to get the electricity measuring coil and gets the electricity from the ground circuit cable and supply its inside PCB board to use, has reduced detection device's volume, portable.
2. The utility model discloses simple structure can know the railway ground connection cable break-make condition in real time through this detection device, reduces artifical patrol, in time discovers the trouble, ensures railway system's safe operation.
Drawings
FIG. 1 is an exploded view of the present invention;
FIG. 2 is a block diagram of the present invention;
fig. 3 is a schematic structural view of the present invention when the upper and lower shells are closed;
FIG. 4 is a block diagram of the present invention;
FIG. 5 is a circuit diagram of the power take and current coil switching circuit of the present invention;
fig. 6 is a circuit diagram of the power-taking management circuit of the present invention;
fig. 7 is a circuit diagram of the current detection circuit of the present invention.
The reference numerals and names in the figures are as follows:
1. an upper shell; 2. a lower case; 3. a rotating shaft; 4. a clamping hole; 5. mounting a mounting groove; 6. an upper measuring core; 7. a lower mounting groove; 8. a lower measurement core; 9. a PCB board; 91. a power take and current coil switching circuit; 92. a power-taking management circuit; 93. a current detection circuit; 94. a main control chip; 10. taking a power measuring coil; 11. a side plate; 12. hooking; 13. buckling; 14. a spring plate.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1 to fig. 3, the present invention provides an embodiment: a detection device for detecting the on-off of a cable of an on-line railway grounding loop comprises an upper shell 1, a lower shell 2 and a side plate 11, wherein the upper case 1 is connected with the lower case 2 through a rotation shaft 3, and the upper case 1 can be opened and closed along the rotation shaft 3, when the upper shell 1 and the lower shell 2 are closed, a circular clamping hole 4 is formed, the railway grounding cable to be detected is clamped through the clamping hole 4 for detection, the operation is simple and convenient, an upper mounting groove 5 is arranged on the upper shell 1, an upper measuring magnetic core 6 is arranged in the upper mounting groove 5, a lower mounting groove 7 is arranged on the lower shell 2, a lower measuring magnetic core 8 and a PCB 9 are arranged in the lower mounting groove 7, the outer side of the lower measuring magnetic core 8 is sleeved with a power taking measuring coil 10, the power taking measuring coil 10 is electrically connected with the PCB 9, the side plates 11 are arranged in two blocks, and the two side plates 11 are respectively covered on the upper mounting groove 5 and the lower mounting groove 7.
Specifically, be provided with couple 12 on the epitheca 1, be provided with on the inferior valve 2 with couple 12 looks adaptation's buckle 13, couple 12 and buckle 13 use mutually support and detect railway ground connection cable time, the installation is swift, and the operation is safe, and reduce cost.
Specifically, it is provided with spring leaf 14 in the mounting groove 5 to go up, spring leaf 14 is "V" shape, and spring leaf 14 with on measure magnetic core 6 contact and connect, when concrete installation, the outstanding face of V-arrangement of spring leaf 14 and last measurement magnetic core 6 contact, spring leaf 14 will be gone up and measure magnetic core 6 toward outer top, make on measure the both ends tangent plane of magnetic core 6 and can laminate well with the both ends tangent plane of measuring magnetic core 8 down to the assembly problem makes on measure magnetic core 6 and measure the both ends tangent plane of magnetic core 8 down and can not laminate well, make magnetic conductivity reduce more, thereby the influence is got electric power and current measurement precision.
In the present embodiment, a high permeability core is used for both the upper measurement core 6 and the lower measurement core 8.
Referring to fig. 4, the PCB 9 in the figure includes a power-taking and current coil switching circuit 91, a power-taking management circuit 92, a current detection circuit 93, and a main control chip 94, wherein the main control chip 94 is a single chip microcomputer and is of the type STM32L053, and the main control chip 94 is electrically connected to the power-taking and current coil switching circuit 91, the power-taking management circuit 92, and the current detection circuit 93 respectively.
Referring to fig. 5, the current-drawing and current-drawing coil switching circuit 91 in the figure is composed of a current-drawing/current-drawing coil input terminal P1, a RELAY1 and a RELAY2, and the current-drawing/current-drawing coil input terminal P1 is connected to the RELAY1 and the RELAY2, respectively.
When the pins 1 and 4 of the RELAY RELAY1 and the RELAY RELAY2 are not powered, the pin 5 and the pin 3 are connected, the pin 5 and the pin 2 are disconnected, the Power-taking input end Power A and the Power-taking input end Power B are respectively output from the pin 3 to supply Power to the Power-taking management circuit 92 of the next stage, and simultaneously supply Power VDD to the RELAY RELAY1 and the RELAY RELAY2, at the moment, the pin 5 and the pin 3 of the RELAY RELAY1 and the RELAY RELAY2 are disconnected, the pin 5 and the pin 2 are connected, and Current signals Current A and Current B are output to the Current detection circuit 93 of the next stage.
Referring to fig. 6, the Power-taking management circuit 92 includes a Power-taking input terminal Power a, a Power-taking input terminal Power B, a rectifier bridge composed of diodes D-D, a MOS transistor Q-Q, a triode Q, a boost Power management chip U, a debuggeable precision parallel regulator U, a comparator U, a resistor R-R, a capacitor C-C, a capacitor C, an inductor L, a rectifier diode D, and a diode D-D, wherein the capacitor C is a super capacitor, Q is a P-channel MOSFET, the MOS transistor Q is an N-channel MOSFET, the MOS transistor Q is a P-channel MOSFET, the Power-taking input terminal Power a and the Power-taking input terminal Power B are respectively connected with the rectifier bridge composed of the diodes D-D, the resistor R, the capacitor C, and the capacitor C are respectively connected with the MOS transistor Q, wherein the capacitor C, and the MOS transistor Q are connected in parallel, and the MOS transistor Q is respectively connected with the capacitor C, the capacitor C, The device comprises a resistor R2, a rectifier diode D7, diodes D5-D6, a boosting power supply management chip U1, a resistor R3-R5, a capacitor C3-C4, a capacitor C7-C8 and an inductor L1, an MOS tube Q3, a capacitor C19, a resistor R6 and a triode Q4, wherein the input end of the triode Q4 is connected with the resistor R7, and a comparator U3 is connected with the resistors R8-R16 and an adjustable precise parallel regulator U2.
The Power-taking input end Power A and the Power-taking input end Power B are rectified by diodes D1-D4, if the input energy of the Power-taking measuring coil 10 is too large, the MOS tube Q2 is conducted, redundant energy is consumed, the charging and discharging of the super capacitor C1 are controlled, the voltage of VCC is increased to 3.6V by the boosting Power supply management chip U1, the Power supply is controlled by the MOS tube Q3 to supply Power to a lower-level circuit, the voltage threshold value of the conduction of the MOS tube Q1 and the MOS tube Q3 is set by the comparator U3, energy is stored by the super capacitor C1 to deal with the fault condition and store key data, and VDD supplies Power to the main control chip 94 and other later-level circuits.
Referring to fig. 7, the Current detection circuit 93 in the figure includes a Current signal input terminal Current a and a Current signal input terminal Current B connected to the power-taking and Current coil switching circuit 91, the Current signal input terminal Current a and the Current signal input terminal Current B are connected to a resistor R17, a rectifier diode D9, and a filter network circuit composed of a capacitor C9, a resistor R19, a resistor R18, and a capacitor C10, wherein the resistor R17 is a voltage detection resistor, the Current detection circuit 93 further includes an AD detection terminal connected to the main control chip 94, and the AD detection terminal is connected to the filter network circuit.
The working principle is as follows: the utility model discloses in operation, the railway ground connection cable that will wait to detect passes through centre gripping hole 4 centre gripping, again with couple 12 and buckle 13 lock, make on measure magnetic core 6 and laminate mutually with the tangent plane of measuring magnetic core 8 both ends down, get electric measuring coil 10 from railway ground connection cable induced energy this moment, through getting electric management circuit 92, with energy storage in super capacitor C1, after super capacitor C1 stores enough energy, will get electric measuring coil 10 and switch to current detection circuit 93 through getting electricity and current coil switching circuit 91, main control chip 94 detects the current value of railway ground connection cable and passes through wireless communication module, with data transmission to the terminal, if the disconnection of railway ground connection cable, no electric current passes through, electric measuring coil 10 cannot induce energy, detection device is out of work; and setting a time period according to the passing frequency of the locomotive, wherein in the time period, if the terminal receives the data sent by the detection device, the grounding return line is on, and if the terminal does not receive the data of the detection device, the railway grounding cable is possibly disconnected, and informing manual inspection.
It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (10)
1. The utility model provides a detection apparatus for be used for detecting online railway ground return circuit cable break-make, detection apparatus includes epitheca (1), inferior valve (2) and curb plate (11), its characterized in that: upper casing (1) is connected with inferior valve (2) through axis of rotation (3), and upper casing (1) can be followed axis of rotation (3) and opened and closed, work as upper casing (1) with form a circular shape centre gripping hole (4) when inferior valve (2) are closed, last mounting groove (5) have been seted up on upper casing (1), it measures magnetic core (6) to go up to install in mounting groove (5), mounting groove (7) have been seted up down on inferior valve (2), install down and measure magnetic core (8) and PCB board (9) in mounting groove (7), it is equipped with and gets electric measuring coil (10) to measure magnetic core (8) outside cover down, get electric measuring coil (10) with PCB board (9) electric connection, curb plate (11) are provided with two, two curb plate (11) are covered respectively and are established on mounting groove (5) and lower mounting groove (7).
2. The detection device for detecting the on-off of the cable of the on-line railway grounding loop according to claim 1, wherein: the upper shell (1) is provided with a hook (12), and the lower shell (2) is provided with a buckle (13) matched with the hook (12).
3. The detection device for detecting the on-off of the cable of the on-line railway grounding loop according to claim 1, wherein: a spring piece (14) is arranged in the upper mounting groove (5), the spring piece (14) is V-shaped, and the spring piece (14) is in contact connection with the upper measuring magnetic core (6).
4. The detection device for detecting the on-off of the cable of the on-line railway grounding loop according to claim 1, wherein: the size of the upper measuring magnetic core (6) is the same as that of the lower measuring magnetic core (8), and when the upper shell (1) and the lower shell (2) are closed, two end parts of the upper measuring magnetic core (6) are in contact connection with two end parts of the lower measuring magnetic core (8).
5. The detection device for detecting the on-off of the cable of the on-line railway grounding loop according to claim 1, wherein: and the upper measuring magnetic core (6) and the lower measuring magnetic core (8) both adopt high-permeability iron cores.
6. The detection device for detecting the on-off of the cable of the on-line railway grounding loop according to claim 1, wherein: the PCB (9) comprises a power and current coil switching circuit (91), a power taking management circuit (92), a current detection circuit (93) and a main control chip (94), wherein the main control chip (94) is respectively electrically connected with the power and current coil switching circuit (91), the power taking management circuit (92) and the current detection circuit (93).
7. The detection device for detecting the on-off of the cable of the on-line railway grounding loop according to claim 6, wherein: the power taking/current coil switching circuit (91) is composed of a power taking/current coil input end P1, a RELAY RELAY1 and a RELAY RELAY2, wherein the power taking/current coil input end P1 is respectively connected with the RELAY RELAY1 and the RELAY RELAY 2.
8. The detection device for detecting the on-off of the cable of the on-line railway grounding loop according to claim 6, wherein: the Power-taking management circuit (92) comprises a Power-taking input end Power A, a Power-taking input end Power B, a rectifier bridge composed of diodes D-D, MOS (metal oxide semiconductor) tubes Q-Q, a triode Q, a boosting Power management chip U, a debuggeable precision parallel regulator U, a comparator U, a resistor R-R, a capacitor C-C, a capacitor C, an inductor L, a rectifier diode D and a diode D-D, wherein the capacitor C is a super capacitor, the Power-taking input end Power A and the Power-taking input end Power B are respectively connected with the rectifier bridge composed of the diodes D-D, the resistor R, the capacitor C and the capacitor C are respectively connected with the MOS tubes Q, the capacitor C and the MOS tubes Q are connected in parallel, the MOS tubes Q are respectively connected with the capacitor C, the resistor R, the rectifier diode D and the diode D-D, the boosting power supply management chip U1 is respectively connected with a resistor R3-R5, a capacitor C3-C4, a capacitor C7-C8 and an inductor L1, the MOS tube Q3 is respectively connected with a capacitor C19, a resistor R6 and a triode Q4, the input end of the triode Q4 is connected with a resistor R7, and the comparator U3 is respectively connected with a resistor R8-R16 and an adjustable precise parallel regulator U2.
9. The detection device for detecting the on-off of the cable of the on-line railway grounding loop according to claim 6, wherein: the Current detection circuit (93) comprises a Current signal input end Current A and a Current signal input end Current B which are connected with a power taking and Current coil switching circuit (91), wherein the Current signal input end Current A and the Current signal input end Current B are connected with a resistor R17, a rectifier diode D9 and a filter network circuit consisting of a capacitor C9, a resistor R19, a resistor R18 and a capacitor C10, the Current detection circuit (93) further comprises an AD detection end connected with a main control chip (94), and the AD detection end is connected with the filter network circuit.
10. The detection device for detecting the on-off of the cable of the on-line railway grounding loop according to claim 6, wherein: the main control chip (94) is a single chip microcomputer, and the model number of the single chip microcomputer is STM32L 053.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020669560.7U CN212275930U (en) | 2020-04-28 | 2020-04-28 | Detection device for detecting on-line railway grounding loop cable on-off |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202020669560.7U CN212275930U (en) | 2020-04-28 | 2020-04-28 | Detection device for detecting on-line railway grounding loop cable on-off |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113447083A (en) * | 2021-08-05 | 2021-09-28 | 广州晓网电子科技有限公司 | Single-coil passive wireless current temperature detection device |
| CN114114080A (en) * | 2021-11-22 | 2022-03-01 | 广东电网有限责任公司 | Ground wire detection system and method |
| CN116599238A (en) * | 2023-07-18 | 2023-08-15 | 青岛鼎信通讯股份有限公司 | Modular fault indicator energy taking module and using method thereof |
-
2020
- 2020-04-28 CN CN202020669560.7U patent/CN212275930U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113447083A (en) * | 2021-08-05 | 2021-09-28 | 广州晓网电子科技有限公司 | Single-coil passive wireless current temperature detection device |
| CN114114080A (en) * | 2021-11-22 | 2022-03-01 | 广东电网有限责任公司 | Ground wire detection system and method |
| CN116599238A (en) * | 2023-07-18 | 2023-08-15 | 青岛鼎信通讯股份有限公司 | Modular fault indicator energy taking module and using method thereof |
| CN116599238B (en) * | 2023-07-18 | 2023-10-31 | 青岛鼎信通讯股份有限公司 | Modular fault indicator energy taking module and using method thereof |
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