CN202110188U - Speed sensor based on optical fiber transmission - Google Patents
Speed sensor based on optical fiber transmission Download PDFInfo
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- CN202110188U CN202110188U CN2010206823300U CN201020682330U CN202110188U CN 202110188 U CN202110188 U CN 202110188U CN 2010206823300 U CN2010206823300 U CN 2010206823300U CN 201020682330 U CN201020682330 U CN 201020682330U CN 202110188 U CN202110188 U CN 202110188U
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Abstract
The utility model relates to a speed sensor based on optical fiber transmission. A separated structure is adopted for a signal acquisition unit and a signal processing unit; a speed sensing signal is generated in a way that a light with brightness change is transmitted to the signal processing unit by an optical fiber and then is converted to an electrical signal again. Undamped and lossless transmission under electromagnetic environment is realized through transmission of the optical signal and photoelectric signal conversion processing on a car so as to avoid electromagnetic radiation and conducted interference on the speed signal in the transmission process. The speed sensor comprises the signal acquisition unit arranged below the car and the signal processing unit arranged on the car, and the signal processing unit is provided with an optical source module, a power source module and the signal processing module. The signal acquisition unit is provided with a rotating table which is connected on a car axle and rotates with the car axle, the rotating table is provided with a through hole, and a pair of optical fiber collimators is arranged at both sides of the through hole.
Description
Technical field
The utility model relates to a kind of speed pickup based on Optical Fiber Transmission that is used for rail vehicle, belongs to track traffic and Electrical Control Technology field.
Background technology
At present the domestic rail vehicle speed per hour that runs on main line railway reached 380 kilometers and more than, thereby more strict design and usability requirement have been proposed for vehicle power and control system.
The vehicle electric control system generally can receive the influence of high voltage surge or electromagnetic interference (EMI), and for example string speed can appear because of being interfered in the speed pickup of monitoring vehicle transport condition and speed usually, speed is lost even accident such as scaling loss.Even more serious is that the high voltage surge that speed pickup forms between bogie and car body also can conduct to the inside of other mobile units, thereby causes that mobile unit is by problems such as scaling loss.
The means that prior art solves this type of problem are to improve the corresponding insulation voltage withstand class by the manufacturer of speed pickup, as waiting means for anti-jamming in sensor internal increase shielding.And, between car body and bogie, set up surge by mobile unit manufacturer and suppress absorption plant.
Though above-mentioned prior art can be improved the influence of high voltage surge or electromagnetic interference (EMI) to a certain extent; But do not solve the electromagnetic interference (EMI) that speed pickup receives at all; Tracing it to its cause, to be signals collecting realize separate with processing unit fully, and speed monitoring signal and transmission all are based on the electric signal realization.
In view of this, the special present patent application that proposes.
The utility model content
The described speed pickup of the utility model based on Optical Fiber Transmission; Its purpose of design is to solve the problem that above-mentioned prior art exists and adopts the split-type structural of signal gathering unit and processing unit; The generation of velocity pick-up signal is a light signal, converts electric signal again into through behind Optical Fiber Transmission to the signal processing unit.Through the transmission of light signal and carry out the photosignal conversion process onboard, to realize undamped, the harmless transmission under the electromagnetic environment, electromagnetic radiation and the Conduction Interference of avoiding rate signal in transmission course, to receive.
Another purpose of design is, rate signal only produces and transmission with the form that the light and shade of light changes, and to improve the precision of velocity pick-up, feeds back Vehicle Speed and state more exactly.
For realizing above-mentioned purpose of design, described speed pickup based on Optical Fiber Transmission mainly includes:
Be installed under the car signal gathering unit and be arranged at the signal processing unit on the car.
The difference with the prior art part is that described signal processing unit has,
Light source module is used for transmitting light signal through optical-fibre channel to signal gathering unit;
Power module is used for to signal gathering unit and signal processing unit power supply being provided;
Signal processing module is used to receive light that changes through optical-fibre channel, by the light and shade of signal gathering unit feedback and the light signal that light and shade is changed and converts the electric signal that provides to mobile unit into.
Described signal gathering unit has, and is connected in axletree and with the rotating disk of its rotation, rotating disk is provided with through hole, in the through hole both sides a pair of optical fiber collimator is set.
Like above-mentioned basic scheme characteristic, above-mentioned speed pickup can be used in the abominable electromagnetic environment realizing the harmless transmission of rate signal, and the signal gathering unit that realizes high anti-interference signal transmission and processing unit be with split-type structural, be divided on the car and car under.
The rotating disk of signal gathering unit is in the process in company with wheel; An optical fiber collimator of rotating disk one side is obtained light source through optical-fibre channel from car; Light produces the light signal of light and shade alternate at the optical fiber collimator of opposite side through the through hole on the rotating disk; This periodically variable light signal carries out opto-electronic conversion again through the signal processing unit that light source receiver, optical-fibre channel transfer on the car; To form the electric signal that high-low level changes, electric signal finally transfers to mobile unit to obtain the concrete numerical value of Vehicle Speed.
For keeping and the synchronism of wheel, the degree of accuracy of raising velocity pick-up; Described signal gathering unit includes the mount pad that is installed on axle box, at the internal diameter of mount pad through the sheathed core wheel of bearing; Core wheel one end connects axletree through shaft coupling, and the other end of core wheel is installed rotating disk.
For improving the stability of rotating disk mounting structure further, described rotating disk press-fits the end in core wheel through gland and bolt.
As stated, the utility model based on the advantage that the speed pickup of Optical Fiber Transmission has is:
1, signal gathering unit and processing unit have split-type structural; Transmit the light signal of the light and shade alternate of representing Vehicle Speed through optical fiber; Make rate signal to avoid receiving electromagnetic radiation and Conduction Interference in strong, undamped, harmless transmission than realization under the complex electromagnetic environments.
2, rate signal produces and transmission with the form of the light signal of light and shade alternate, guarantees the precision of velocity pick-up to greatest extent, helps reflecting exactly Vehicle Speed and state.
Description of drawings
Combine following accompanying drawing that the utility model is done explanation further at present;
Fig. 1 is based on the velocity pick-up principle schematic of Optical Fiber Transmission;
Fig. 2 is the structural representation of said signal gathering unit;
Fig. 3 is the circuit diagram of said signal processing unit;
Extremely shown in Figure 3 like Fig. 1, optical fiber collimator 1, rotating disk 2, optical fiber collimator 3, optical-fibre channel 4, through hole 5, mount pad 6, bearing 7, light source transceiver module 8, fibre bundle 9, axletree 10, shaft coupling 11, core wheel 12, gland 13, bolt 14, outer cover 15.
Embodiment
Embodiment 1, and to shown in Figure 3, described speed pickup based on Optical Fiber Transmission includes like Fig. 1:
Be installed on signal gathering unit on the axle box of bogie, be arranged at the signal processing unit of bogie frame top.Wherein, described signal processing unit has,
Light source module is used for transmitting light signal through optical-fibre channel 4 to signal gathering unit, in optical-fibre channel 4, is provided with fibre bundle 9.
Power module is used for to signal gathering unit and signal processing unit power supply being provided;
Signal processing module is used to receive and converts the electric signal that provides to mobile unit through optical-fibre channel 4, by the light signal of signal gathering unit feedback and with light signal into.
Described signal gathering unit has; Be installed on the mount pad 6 of axle box; Internal diameter at mount pad 6 passes through bearing 7 sheathed core wheels 12, and core wheel 12 1 ends connect axletrees 10 through shaft coupling 11, and rotating disk 2 press-fits in the end of the other end of core wheel 12 through gland 13 and bolt 14.
Said velocity pick-up method based on Optical Fiber Transmission, be through signal gathering unit with the light signal form of Vehicle Speed with the light and shade alternate, transfer to signal processing unit by optical-fibre channel 4;
Signal processing unit converts the light signal of light and shade alternate into high-low level variation electric signal again, to offer mobile unit in order to obtain the concrete numerical value of Vehicle Speed.
Wherein, signal gathering unit has the rotating disk 2 that is connected in axletree 10 and has through hole 5.
In the process of rotating disk 2 in company with wheel rotation, between a pair of light source generator 1, light source receiver 3, form change in optical signal periodic, that light and shade replaces.
The rotating disk 2 of signal gathering unit is in the process in company with wheel; The optical fiber collimator 1 of rotating disk 2 one sides is obtained light source through optical-fibre channel 4 from car; Light produces the light signal of light and shade alternate at opposite side through the through hole 5 on the rotating disk 2; This periodically variable light signal carries out opto-electronic conversion again through the signal processing unit that optical fiber collimator 3, optical-fibre channel 4 transfer on the car; To form the electric signal that high-low level changes, electric signal finally transfers to mobile unit to obtain the concrete numerical value of Vehicle Speed.
Claims (3)
1. speed pickup based on Optical Fiber Transmission includes and is installed under the car signal gathering unit and is arranged at the signal processing unit on the car, it is characterized in that:
Described signal processing unit has, and light source module is used for transmitting light signal through optical-fibre channel (4) to signal gathering unit;
Power module is used for to signal gathering unit and signal processing unit power supply being provided;
Signal processing module is used for receiving the light signal that changes through optical-fibre channel (4), by the light and shade of signal gathering unit feedback, and converts light signal into provide to mobile unit electric signal;
Described signal gathering unit has, and is connected in axletree (10) and with the rotating disk (2) of its rotation, rotating disk (2) is provided with through hole (5), in through hole (5) both sides a pair of optical fiber collimator (1), (3) is set.
2. the speed pickup based on Optical Fiber Transmission according to claim 1; It is characterized in that: described signal gathering unit; Include the mount pad (6) that is installed on axle box; Internal diameter at mount pad (6) passes through the sheathed core wheel of bearing (7) (12), and core wheel (12) one ends connect axletree (10) through shaft coupling (11), and the other end of core wheel (12) is installed rotating disk (2).
3. the speed pickup based on Optical Fiber Transmission according to claim 2 is characterized in that: described rotating disk (2) press-fits in the end of core wheel (12) through gland (13) and bolt (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206823300U CN202110188U (en) | 2010-12-27 | 2010-12-27 | Speed sensor based on optical fiber transmission |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206823300U CN202110188U (en) | 2010-12-27 | 2010-12-27 | Speed sensor based on optical fiber transmission |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202110188U true CN202110188U (en) | 2012-01-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206823300U Expired - Lifetime CN202110188U (en) | 2010-12-27 | 2010-12-27 | Speed sensor based on optical fiber transmission |
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| CN (1) | CN202110188U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102539811A (en) * | 2010-12-27 | 2012-07-04 | 南车青岛四方机车车辆股份有限公司 | Velocity sensor based on optic fiber transmission and method thereof |
| CN105223372A (en) * | 2015-09-22 | 2016-01-06 | 奇瑞汽车股份有限公司 | Engine cylinder flame velocity of propagation measuring system and measuring method |
| CN106197841A (en) * | 2016-06-27 | 2016-12-07 | 奇瑞汽车股份有限公司 | A kind of electromotor in-cylinder combustion measures system and measuring method thereof |
-
2010
- 2010-12-27 CN CN2010206823300U patent/CN202110188U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102539811A (en) * | 2010-12-27 | 2012-07-04 | 南车青岛四方机车车辆股份有限公司 | Velocity sensor based on optic fiber transmission and method thereof |
| CN105223372A (en) * | 2015-09-22 | 2016-01-06 | 奇瑞汽车股份有限公司 | Engine cylinder flame velocity of propagation measuring system and measuring method |
| CN106197841A (en) * | 2016-06-27 | 2016-12-07 | 奇瑞汽车股份有限公司 | A kind of electromotor in-cylinder combustion measures system and measuring method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP03 | Change of name, title or address |
Address after: Chengyang District of Shandong city of Qingdao province Jinhong road 266111 No. 88 Patentee after: CRRC QINGDAO SIFANG CO., LTD. Address before: Jihongtan town Chengyang District Shandong city Qingdao province Jinhong road 266111 No. 88 Patentee before: CSR Qingdao Sifang Locomotive and Rolling Stock Co., Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120111 |