CN204272041U - Magnet steel amplifier - Google Patents
Magnet steel amplifier Download PDFInfo
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- CN204272041U CN204272041U CN201420835099.2U CN201420835099U CN204272041U CN 204272041 U CN204272041 U CN 204272041U CN 201420835099 U CN201420835099 U CN 201420835099U CN 204272041 U CN204272041 U CN 204272041U
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- circuit
- magnet steel
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- amplifier
- amplifying
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Abstract
A kind of magnet steel amplifier, input is connected with passive Magnetic sensor, and output is connected with cis-position segmenting device, comprise: the amplifying unit that multichannel is independent and identical, each road amplifying unit comprises first-level filtering wave shaping circuit, amplifying circuit, secondary filter shaping circuit and compares output circuit composition, and above-mentioned each circuit sequence connects.Magnet steel amplifier of the present utility model, improves the amplitude output signal of transducer, ensures still there is correct cis-position segmentation when train gait of march 3-15Km/h.The train speed per hour lower limit adapted to by cis-position segmenting device expands to 3Km/h from 15Km/h.
Description
Technical field
The utility model relates to the technical field of field monitoring, is a kind of magnet steel amplifier specifically.
Background technology
In the various checkout equipment of railway freight system and surveillance, all need cis-position segmentation accurately, and do real-time cis-position and detect, the detection data being these systems make cis-position ownership label.The input signal of cis-position segmenting device from " wheel Magnetic Sensor ", or is referred to as " passive Magnetic sensor ".
The amplitude that " passive Magnetic sensor " outputs signal and the velocity correlation that train is advanced, when train gait of march is lower than 15Km/h, the output signal amplitude of being somebody's turn to do " passive Magnetic sensor " is not enough to drive cis-position segmenting device to make correct cis-position segmentation result reliably, and the probability of makeing mistakes greatly increases.
Utility model content
The technical problems to be solved in the utility model is to provide a kind of magnet steel amplifier.
The technical scheme that the utility model is taked for the technical problem existed in solution known technology is:
Magnet steel amplifier of the present utility model, input is connected with passive Magnetic sensor, and output is connected with cis-position segmenting device, comprise: the amplifying unit that multichannel is independent and identical, each road amplifying unit comprises first-level filtering wave shaping circuit, amplifying circuit, secondary filter shaping circuit and compares output circuit composition, and above-mentioned each circuit sequence connects.
The utility model can also adopt following technical measures:
Described amplifying circuit and compare output circuit and all adopt LM2904 operational amplifier.
Also display circuit is connected with in described comparison output circuit.
The gain of described amplifying circuit is 10dB.
Amplifying unit in described magnet steel amplifier is four tunnels.
The advantage that the utility model has and good effect are:
Magnet steel amplifier of the present utility model, improves the amplitude output signal of transducer, ensures still there is correct cis-position segmentation when train gait of march 3-15Km/h.The train speed per hour lower limit adapted to by cis-position segmenting device expands to 3Km/h from 15Km/h.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of a road amplifying unit in magnet steel amplifier of the present utility model;
Fig. 2 is the wiring schematic diagram of magnet steel amplifier of the present utility model.
Embodiment
Referring to drawings and Examples, the utility model is described in detail.
As depicted in figs. 1 and 2, magnet steel amplifier of the present utility model, input is connected with passive Magnetic sensor, and output is connected with cis-position segmenting device, comprise: the amplifying unit that multichannel is independent and identical, each road amplifying unit comprises first-level filtering wave shaping circuit, amplifying circuit, secondary filter shaping circuit and compares output circuit composition, and above-mentioned each circuit sequence connects.
Amplifying circuit and compare output circuit and all adopt LM2904 operational amplifier.
Relatively also be connected with display circuit in output circuit.
The gain of amplifying circuit is 10dB.
Amplifying unit in magnet steel amplifier is four tunnels.
The power interface of magnet steel amplifier is connected with L, G, N three-phase alternating current respectively, and magnet steel signal input signal interface and output signal interface corresponding magnet steel amplifier Nei tetra-road amplifying unit respectively, wherein the negative signal on the two or three tunnel adopts same interface.
Magnetic sensor detection signal has phase polarity, and when testing the speed occasion, adopt same wheel to calculate to obtain speed through the time difference of two transducers of constant spacing, namely speed is above-mentioned spacing and the quotient between the time difference.If Magnetic sensor 2 phase place is contrary, then time difference calibration constant value reduces, and speed seriously accelerates, and need change Magnetic sensor polarity.If Magnetic sensor 3 phase place is contrary, then Magnetic sensor 3 occurs that the time of positive pulse is t
3, t
3be greater than t
2, therefore speed can be slack-off, now needs to measure opposite polarity transducer with oscilloscope, changes polarity.
The above, it is only preferred embodiment of the present utility model, not any pro forma restriction is done to the utility model, although the utility model with preferred embodiment openly as above, but, and be not used to limit the utility model, any those skilled in the art, do not departing within the scope of technical solutions of the utility model, certainly the technology contents of announcement can be utilized to make a little change or modification, become the Equivalent embodiments of equivalent variations, in every case be the content not departing from technical solutions of the utility model, according to any simple modification that technical spirit of the present utility model is done above embodiment, equivalent variations and modification, all belong in the scope of technical solutions of the utility model.
Claims (5)
1. a magnet steel amplifier, input is connected with passive Magnetic sensor, and output is connected with cis-position segmenting device, it is characterized in that, comprise: the amplifying unit that multichannel is independent and identical, each road amplifying unit comprises first-level filtering wave shaping circuit, amplifying circuit, secondary filter shaping circuit and compares output circuit composition, and above-mentioned each circuit sequence connects.
2. magnet steel amplifier according to claim 1, is characterized in that: amplifying circuit and compare output circuit and all adopt LM2904 operational amplifier.
3. magnet steel amplifier according to claim 2, is characterized in that: compare in output circuit and be also connected with display circuit.
4. magnet steel amplifier according to claim 1 and 2, is characterized in that: the gain of amplifying circuit is 10dB.
5. magnet steel amplifier according to claim 1, is characterized in that: the amplifying unit in magnet steel amplifier is four tunnels.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420835099.2U CN204272041U (en) | 2014-12-25 | 2014-12-25 | Magnet steel amplifier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420835099.2U CN204272041U (en) | 2014-12-25 | 2014-12-25 | Magnet steel amplifier |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204272041U true CN204272041U (en) | 2015-04-15 |
Family
ID=52806886
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420835099.2U Active CN204272041U (en) | 2014-12-25 | 2014-12-25 | Magnet steel amplifier |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204272041U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105004877A (en) * | 2015-07-15 | 2015-10-28 | 成都森川铁路车辆技术开发有限公司 | Wheel sensor signal processing method and wheel sensor signal processing system |
-
2014
- 2014-12-25 CN CN201420835099.2U patent/CN204272041U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105004877A (en) * | 2015-07-15 | 2015-10-28 | 成都森川铁路车辆技术开发有限公司 | Wheel sensor signal processing method and wheel sensor signal processing system |
| CN105004877B (en) * | 2015-07-15 | 2017-11-10 | 成都森川科技股份有限公司 | wheel sensor signal processing method and system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C53 | Correction of patent for invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: Yu Dahai Inventor after: Dan Yutang Inventor after: Wang Guan Inventor after: Li Yajun Inventor before: Chen Haiming Inventor before: Dan Yutang Inventor before: Wang Guan Inventor before: Li Yajun |
|
| COR | Change of bibliographic data |
Free format text: CORRECT: INVENTOR; FROM: CHEN HAIMING DAN YUTANG WANG GUAN LI YAJUN TO: YU DAHAI DAN YUTANG WANG GUAN LI YAJUN |