CN219790172U - Composite wheel sensor - Google Patents
Composite wheel sensor Download PDFInfo
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- CN219790172U CN219790172U CN202321366192.9U CN202321366192U CN219790172U CN 219790172 U CN219790172 U CN 219790172U CN 202321366192 U CN202321366192 U CN 202321366192U CN 219790172 U CN219790172 U CN 219790172U
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- inner coil
- circuit board
- control circuit
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- 239000002131 composite material Substances 0.000 title claims abstract description 20
- 238000001514 detection method Methods 0.000 claims abstract description 27
- 230000010355 oscillation Effects 0.000 abstract description 7
- 230000006698 induction Effects 0.000 abstract description 6
- 238000004804 winding Methods 0.000 description 19
- 229910000831 Steel Inorganic materials 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 238000004088 simulation Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000005672 electromagnetic field Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000003745 diagnosis Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- BXLNWOAYQXBHCY-UHFFFAOYSA-N diphenylsilylidene(diphenyl)silane Chemical compound C1=CC=CC=C1[Si](C=1C=CC=CC=1)=[Si](C=1C=CC=CC=1)C1=CC=CC=C1 BXLNWOAYQXBHCY-UHFFFAOYSA-N 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012806 monitoring device Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
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- Train Traffic Observation, Control, And Security (AREA)
Abstract
The utility model discloses a composite wheel sensor, which comprises an inner coil, a magnetic ring, an outer coil and a control circuit board, wherein the magnetic ring is circular; the upper planes of the inner coil, the magnetic ring and the outer coil are positioned on the same horizontal plane, and the bottom of the inner coil is arranged on the magnetic ring; the two ends of the inner coil are connected with the control circuit board, and the two ends of the outer coil are connected with the control circuit board. The induction area of the composite wheel sensor is divided into an outer coil and an inner coil, the outer coil is a passive coil, power supply is not needed, a formed passive detection circuit can effectively detect electromagnetic signals generated by a simulated wheel of a railway infrared detection vehicle, the inner coil is oscillated with a magnetic ring after being powered by a circuit board, the real wheel of a train changes oscillation signals after passing through the induction area, the active detection circuit can effectively detect the real wheel of the train, the two wheels are mutually noninterfered, the detection result is accurate, and the use is convenient.
Description
Technical Field
The utility model belongs to the technical field of wheel sensors, and particularly relates to a composite wheel sensor.
Background
The wheel sensor of the railway vehicle is a key component clamped on the inner side of a steel rail in the use process of the wheel sensor of the railway vehicle, and is applied to rail edge equipment such as a THDS infrared axle temperature detection system of the railway vehicle, a TFDS truck operation fault dynamic image detection system, a TPDS truck operation state ground safety monitoring system, a TADS truck rolling bearing early fault rail edge acoustic diagnosis system, an AEI car number identification system and the like.
The existing railway wheel sensor has the advantages that the shell is made of metal aluminum, the main structure is an inverted T-shaped magnetic body, the winding direction of the sensor is parallel to the direction of a railway power line interference induced magnetic field, and the influence of the interference magnetic field is reduced to zero theoretically; the magnetic circuit of the magnetic body is relatively closed, so that the triggering sensitivity of the sensor is increased, and the service life is prolonged. Each test point in the train detection area can ensure the normal operation of each railway vehicle ground monitoring system only by installing one sensor described in the comparison file.
Wheel sensors of this type have been in great use and continual improvement over long practice. However, there is another type of vehicle on the railway, i.e., a simulation test vehicle, which cannot be effectively monitored by using the existing wheel sensor. Because the simulated test vehicle has a plurality of (typically 4) simulated wheels in addition to the actual wheels as in conventional railway vehicles, the simulated wheels do not ride on the rails and act as a movement, but rather are provided with some other monitoring device. Thus, the simulated wheel is not consistent with the actual wheel in height, and is 10cm higher, or even higher, than the actual wheel. The simulated wheel is additionally provided with an electromagnet, and the existing wheel sensors are designed based on the principle of a proximity switch, so that the simulated wheel cannot be detected, and the reason is mainly that two points are: 1. the effective range of the proximity switch formed by the wheel sensor is limited, and the analog wheel with a longer distance can not be detected; 2. the electromagnet is additionally arranged on the simulated wheel, and an oscillation signal generated by the proximity switch needs a metal object to be close to an oscillation area, so that the oscillation amplitude is changed, the aim of detecting the real wheel is fulfilled, and the electromagnetic field signal generated by the electromagnet is mutually not interfered, so that the existing wheel sensor is ineffective in detecting the real wheel.
Therefore, for the analog detection vehicle, an additional set of wheel sensors is required to specifically detect the analog wheels.
Disclosure of Invention
The utility model aims to provide a composite wheel sensor which can detect real wheels and simulated wheels and can completely solve the detection requirement of all wheels of a simulated detection vehicle.
The aim of the utility model is achieved by the following technical scheme: a composite wheel sensor comprises an inner coil, a magnetic ring, an outer coil and a control circuit board, wherein the magnetic ring is circular, the inner coil is arranged in the magnetic ring, and the outer coil is sleeved on the outer side wall of the magnetic ring in a circular shape; the upper planes of the inner coil, the magnetic ring and the outer coil are positioned on the same horizontal plane, and the bottom of the inner coil is arranged on the magnetic ring; the two ends of the inner coil are connected with the control circuit board, and the two ends of the outer coil are connected with the control circuit board.
As one of the preferable modes, the cross section of the magnetic ring is in a shape of a Chinese character 'shan', the vertical posts of the Chinese character 'shan' are winding posts, the inner coil is wound on the winding posts, the magnetic ring comprises a magnetic ring periphery and a magnetic ring inner post, the magnetic ring periphery and the magnetic ring inner post form an inner groove, and the outer coil is wound on the outer wall of the magnetic ring periphery.
As one of the preferred modes, the control circuit board comprises an operational amplifier, an LC oscillating circuit and a trigger circuit, the outer coil is connected with the operational amplifier, the operational amplifier is connected with the trigger circuit, the inner coil is connected with the LC oscillating circuit, and the LC oscillating circuit is connected with the control circuit board.
As one of the preferred modes, the electromagnet in the analog wheel forms a passive detection circuit with the outer coil.
As one of the preferable modes, the magnetic ring is of a ring structure with a bottom, the inner coil is arranged in an inner groove formed by the side wall and the bottom of the ring, and the upper plane of the inner coil corresponds to the size of the inner groove; the inner coil and the magnetic ring form an LC oscillator.
As one of the preferred modes, the real wheel and LC oscillator form an active detection circuit.
As one of the preferred modes, the inner coil, the magnetic ring and the outer coil are all disposed on top of the sensor.
As one of the preferable modes, a notch is arranged on the magnetic ring, and the end head of the inner coil passes through the notch and then is connected with the control circuit board.
Compared with the prior art, the utility model has the beneficial effects that: the induction area of the composite wheel sensor is divided into an outer coil and an inner coil, the outer coil is a passive coil, no power supply is needed, the formed passive detection circuit can effectively detect electromagnetic signals generated by the simulated wheels of the railway infrared detection vehicle, the inner coil is oscillated with the magnetic ring after being powered by the circuit board, the real wheels of the train pass through the induction area and change oscillation signals, the active detection circuit can effectively detect the real wheels of the train, the two wheels are mutually noninterfered, the detection result is accurate, and the use is very convenient.
Drawings
Fig. 1 is a schematic structural view of an inner coil bobbin.
Fig. 2 is a schematic view of the structure of the inner coil wound around the winding post.
Fig. 3 is a schematic structural view of a magnetic ring in the present utility model.
Fig. 4 is a schematic plan view of the inner coil when it is placed in the magnetic ring.
Fig. 5 is a schematic plan view of the inner and outer coils after they are wound.
Fig. 6 is a circuit block diagram of an analog test car and the present wheel sensor.
Wherein: the coil comprises a magnetic ring 1, an outer coil 2, an inner coil 3, a side wall 4 of the magnetic ring, an inner post 5 of the magnetic ring, an inner groove 6, a notch 7, a winding post 8, a winding post mounting hole 81, a winding post winding area 82, a control circuit board 9, an operational amplifier 91, an LC oscillating circuit 92 and a trigger circuit 93.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
The utility model relates to a composite wheel sensor, which comprises an inner coil, a magnetic ring, an outer coil and a control circuit board, wherein the magnetic ring is in a circular ring shape, the inner coil is wound on a winding post and then is arranged in the magnetic ring, and the outer coil is wound in a circular shape and sleeved on the outer side wall of the magnetic ring; the upper planes of the inner coil, the magnetic ring and the outer coil are in the same horizontal plane, the bottom of the inner coil is arranged on the magnetic ring, and the outer coil takes the outer side wall of the magnetic ring as a winding post; the two ends of the inner coil are connected with the control circuit board, and the two ends of the outer coil are connected with the control circuit board.
The sensor is arranged on the side face of a railway rail, when a wheel passes through, the induction area of the composite wheel sensor is divided into an outer coil and an inner coil, the outer coil is a passive coil, power supply is not needed, a formed passive detection circuit can effectively detect electromagnetic signals generated by a railway infrared detection vehicle simulated wheel, the inner coil is in oscillation with the magnetic ring after being powered by a circuit board, the real wheel of a train changes oscillation signals after passing through the induction area, the active detection circuit can effectively detect the real wheel of the train, the two parts are not interfered with each other, the detection result is accurate, and the use is very convenient.
Examples
As shown in fig. 1, 2, 3, 4, 5 and 6, a specific embodiment of the composite wheel sensor is described below with reference to the accompanying drawings:
the composite wheel sensor mainly comprises an inner coil 3, a magnetic ring 1, an outer coil 2 and a control circuit board 9.
Wherein: the control circuit board 9 comprises an operational amplifier 91, an LC oscillating circuit 92 and a trigger circuit 93, the control circuit board 9 is externally connected with a power supply, and components in the control circuit board are common components which can be installed and used after being purchased in the market.
For the outer coil: one end of the outer coil 2 is connected to a control circuit board 9. Specifically, the outer coil 2 is connected to an operational amplifier 91, the operational amplifier 91 is connected to a trigger circuit 93, and the electromagnet in the analog wheel and the outer coil form a passive detection circuit.
For the inner coil: one end of the inner coil 3 is connected to a control circuit board 9. Specifically, the inner coil 3 is connected to an LC oscillating circuit 92, and the LC oscillating circuit 92 is connected to the control circuit board 9. The real wheel and LC oscillator form an active detection circuit.
Wherein: the winding post 8 has an i-shaped structure, a winding post mounting hole 81 is formed in the middle of the vertical rod of the winding post, and a winding post winding area 82 is formed between the upper plane and the lower plane. The inner coil is wound on the winding post 8 in advance for convenient use, and the end head of the inner coil at one end is reserved for connecting a circuit.
The magnetic ring 1 is of a ring structure with a bottom, the magnetic ring 1 comprises a ring-shaped side wall 4 and a columnar magnetic ring inner column 5, and the ring-shaped side wall 4, the magnetic ring inner column 5 and the bottom of the magnetic ring form a ring-shaped inner groove 6. The inner coil 3 is arranged in an inner groove 6 formed by the side wall 4 and the bottom of the circular ring through a winding post 8, and the upper plane of the inner coil corresponds to the size of the inner groove 6; the inner coil and the magnetic ring can form an LC oscillator.
In particular, in this embodiment, the cross section of the magnetic ring is in a "mountain" shape, the magnetic ring includes a magnetic ring periphery and a magnetic ring inner post, the vertical post of the "mountain" shape is the magnetic ring inner post, the winding post can be fixed on the magnetic ring inner post, the magnetic ring periphery and the magnetic ring inner post form an inner groove just used for placing the inner coil, and the outer coil is wound on the outer wall of the magnetic ring periphery.
The installation method of the magnetic ring 1 comprises the following steps: the wound inner coil is fixed on the inner post of the magnetic ring, the whole inner coil is placed in the inner groove 6, and the upper plane of the inner coil is level with the upper plane of the magnetic ring. Because the magnetic ring 1 is arranged at the center and the periphery of the inner coil, the inner coil 3 and the magnetic ring 1 form a proximity switch. In order to achieve better use effect, the size of the inner coil is just the same as that of the inner groove, so that the periphery and the bottom of the whole inner coil are magnetic steel, the middle part of the whole inner coil is also magnetic steel, the magnetic ring is made of plastic materials, the inner coil only has the upper part capable of forming magnetic force lines, and the inner coil and the magnetic ring form a proximity switch with functions only at the upper part, so that false detection is prevented. When the control circuit board is electrified, the inner coil forms an LC oscillating circuit, once a real wheel passes, the real wheel is metal, the real wheel cuts magnetic force lines, the whole LC oscillating circuit is affected, the circuit which is always in an oscillating state under the action of the control circuit board is interfered, part of magnetic force lines above the inner coil are shielded when the real wheel passes, an oscillating signal is reduced, the control circuit board intuitively converts and outputs the signal, the oscillating signal can be intuitively output through a remote receiving end, and the passing condition of the real wheel can be remotely detected.
The magnetic ring 1 is provided with a notch 7, and the end head of the inner coil 3 passes through the notch 7 and then is connected with a control circuit board 9. Thus, the winding and wiring can be facilitated.
The outer coil 2 is wound on the side wall 4 of the magnetic ring, and the outer coil is not provided with magnetic steel at the periphery and the bottom to shield the magnetic ring, so that the outer coil is electrified through the control circuit board, the outer coil forms a passive detection circuit after the control circuit board and the outer coil are electrified, when a real wheel passes, the outer coil does not react, and when the simulation wheel passes, a magnetic field generated by the outer coil is cut by an electromagnetic field signal generated by an electromagnet on the simulation wheel, and a current signal which is different from a current signal generated under normal conditions can be formed, and is amplified through the operational amplifier and then triggered to be output through the trigger circuit board, and a signal of the wheel passing can be received at a remote receiving end.
Therefore, the outer coil and the inner coil have different triggering principles and functions, and can be matched to detect the simulated wheel and the real wheel respectively, and the signals can be output only by detecting the wheel, so that the detection effect on the wheel is achieved.
The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the utility model.
Claims (8)
1. A composite wheel sensor, characterized by: the magnetic ring is circular, the inner coil is arranged in the magnetic ring, and the outer coil is sleeved on the outer side wall of the magnetic ring in a ring shape; the upper planes of the inner coil, the magnetic ring and the outer coil are positioned on the same horizontal plane, and the bottom of the inner coil is arranged on the magnetic ring; the two ends of the inner coil are connected with the control circuit board, and the two ends of the outer coil are connected with the control circuit board.
2. The composite wheel sensor of claim 1, wherein: the section of the magnetic ring is in a shape like a Chinese character 'shan', a vertical post of the Chinese character 'shan' is a wrapping post, an inner coil is wound on the wrapping post, the magnetic ring comprises a magnetic ring periphery and a magnetic ring inner post, the magnetic ring periphery and the magnetic ring inner post form an inner groove, and an outer coil is wound on the outer wall of the magnetic ring periphery.
3. The composite wheel sensor of claim 1, wherein: the control circuit board comprises an operational amplifier, an LC oscillating circuit and a trigger circuit, the outer coil is connected with the operational amplifier, the operational amplifier is connected with the trigger circuit, the inner coil is connected with the LC oscillating circuit, and the LC oscillating circuit is connected with the control circuit board.
4. The composite wheel sensor of claim 1, wherein: the electromagnet in the simulated wheel and the outer coil form a passive detection circuit.
5. The composite wheel sensor of claim 1, wherein: the magnetic ring is of a ring structure with a bottom, the inner coil is arranged in an inner groove formed by the side wall and the bottom of the ring, and the upper plane of the inner coil corresponds to the size of the inner groove; the inner coil and the magnetic ring form an LC oscillator.
6. The composite wheel sensor of claim 5, wherein: the real wheel and LC oscillator form an active detection circuit.
7. The composite wheel sensor of claim 1, wherein: the inner coil, the magnetic ring and the outer coil are all arranged at the top of the sensor.
8. The composite wheel sensor of claim 7, wherein: the magnetic ring is provided with a notch, and the end head of the inner coil passes through the notch and then is connected with the control circuit board.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321366192.9U CN219790172U (en) | 2023-05-31 | 2023-05-31 | Composite wheel sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321366192.9U CN219790172U (en) | 2023-05-31 | 2023-05-31 | Composite wheel sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219790172U true CN219790172U (en) | 2023-10-03 |
Family
ID=88179387
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321366192.9U Active CN219790172U (en) | 2023-05-31 | 2023-05-31 | Composite wheel sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219790172U (en) |
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2023
- 2023-05-31 CN CN202321366192.9U patent/CN219790172U/en active Active
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