CN209014593U - A kind of digital wheel speed sensors - Google Patents
A kind of digital wheel speed sensors Download PDFInfo
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- CN209014593U CN209014593U CN201822001505.6U CN201822001505U CN209014593U CN 209014593 U CN209014593 U CN 209014593U CN 201822001505 U CN201822001505 U CN 201822001505U CN 209014593 U CN209014593 U CN 209014593U
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- wheel speed
- hall
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- resistance
- pedestal
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Abstract
The utility model discloses a kind of digital wheel speed sensors, is mainly made of shield, pedestal, printing board group and flexible shielded cable.It prints board group and is equipped with wheel speed sensing circuit, be mainly made of Hall conditioning circuit K1, resistance R1-R2, zener diode R3 and capacitor C1-C2；Resistance R1 is connected with one end of resistance R2, and forms the power input of wheel speed sensing circuit；After the other end of resistance R1 is connected with one end of the second end of Hall conditioning circuit K1 and capacitor C2, the square-wave signal output end of wheel speed sensing circuit is formed；Cathode, one end of capacitor C1 and the first end of Hall conditioning circuit K1 of the other end connection zener diode R3 of resistance R2；The anode of zener diode R3, the other end of capacitor C1, the third end of Hall conditioning circuit K1 and capacitor C2 the other end be grounded simultaneously.The utility model application Hall conditioning circuit devises a kind of simple and reliable digital wheel speed sensors, realizes wheel speed sensors output square-wave signal.
Description
Technical field
The utility model relates to wheel speed measurement technical fields, and in particular to a kind of digital wheel speed sensors.
Background technique
Existing wheel speed sensors are divided into two kinds: magneto-electric type wheel speed sensor and Hall wheel speed sensor.Magneto-electric wheel speed
Sensor is to be incuded by coil to changing magnetic field, generates corresponding alternating voltage signal.Hall wheel speed sensor
It is to be incuded by hall device to changing magnetic field, generates the Hall voltage of corresponding near sinusoidal waveshape.Due to upper
Stating two kinds of wheel speed sensors output is all sine wave signal, therefore in practical applications, is all needed to wheel speed sensors
Output signal is handled, so that it becomes after the identical square-wave signal of frequency, it could be for microprocessor (Microprogrammed
Control Unit, MCU) it is acquired.Further, since limitation of the wheel speed sensors to the induction range of magnetic field strength, therefore
There are strict requirements for the working gas gap between tested measuring mechanism, causes the installation requirement of wheel speed sensors higher, add
Big operation difficulty.
Utility model content
To be solved in the utility model is that existing wheel speed sensors need the problem of carrying out post-processing to output signal,
A kind of digital wheel speed sensors are provided.
To solve the above problems, the utility model is achieved through the following technical solutions:
A kind of digital wheel speed sensors, including the wheel speed sensing circuit being set in printing board group, the wheel speed sensing circuit
It is made of Hall conditioning circuit K1, resistance R1-R2, zener diode R3 and capacitor C1-C2；The one of resistance R1 and resistance R2
End is connected, and forms the power input of wheel speed sensing circuit；The other end of resistance R1 and the second end of Hall conditioning circuit K1
After being connected with one end of capacitor C2, the square-wave signal output end of wheel speed sensing circuit is formed；The other end of resistance R2 connects pressure stabilizing
The cathode of diode R3, one end of capacitor C1 and Hall conditioning circuit K1 first end；Anode, the capacitor C1 of zener diode R3
The other end, the third end of Hall conditioning circuit K1 and the other end of capacitor C2 be grounded simultaneously.
Above-mentioned digital wheel speed sensors still further comprise shield, pedestal and flexible shielded cable；Printing board group is fixed
On the top of pedestal；Flexible shielded cable is connect with printing board group by welding manner, and flexible shielded cable passes through base central
Through-hole under wear to the bottom of pedestal；Shield is covered on the top of pedestal, and is connected using engagement thread.
In above scheme, pedestal is formed using stainless steel or aluminium product.
In above scheme, shield is process using polyimide plastic plate.
Compared with prior art, the utility model has the following characteristics:
1, a kind of simple and reliable digital wheel speed sensors are devised using Hall conditioning circuit, utilizes minute quantity member device
Part simplifies circuit design, reduces costs, and realizes wheel speed sensors output square-wave signal, solves and need to conventional wheel
Fast sensor output signal carries out the problem of post-processing；
It 2, can be in the work gas of pole wide scope using the wheel speed sensing circuit with adaptive adjustment magnetic field induction range
The variation of response magnetic field intensity in gap, the range of working gas gap is very big, solves wheel speed sensors installation requirement height, operation difficulty
Big problem.
3, all arrangement is installed on pedestal to main parts size, and pedestal by the way of being threadedly coupled, is convenient for assembling with shield
With maintenance, while the environmental suitability of wheel speed sensor is improved.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of digital wheel speed sensors.
Fig. 2 is the exploded view of Fig. 1.
Fig. 3 is wheel speed sensing circuit schematic diagram.
Figure label: 1, shield；2, the first screw；3, the first washer；4, board group is printed；5, silicon rubber bar；6, pedestal；7,
Flexible shielded cable；8, cable clip；9, second packing ring；10, spring washer；11, the second screw.
Specific embodiment
For the purpose of this utility model, technical solution and advantage is more clearly understood, below in conjunction with specific example, and join
According to attached drawing, the utility model is further described.It should be noted that the direction term mentioned in example, such as "upper",
"lower", " in ", " left side " " right side ", "front", "rear" etc., be only the direction with reference to attached drawing.Therefore, the direction used is intended merely to illustrate
Not it is used to limit the protection scope of the utility model.
Referring to Fig. 1-2, a kind of digital wheel speed sensors, mainly by shield 1, the first screw 2, the first washer 3, printed board
Group 4, silicon rubber bar 5, pedestal 6, flexible shielded cable 7, cable clip 8, second packing ring 9, spring washer 10,11 groups of the second screw
At.
Pedestal 6 uses stainless steel or aluminium product.Two pillars on 6 top of pedestal have threaded hole.Using two first
2, two the first washers 3 of screw are fixed on board group 4 is printed on two pillars on 6 top of pedestal.It will be printed using two screws
Board group 4 is directly fixed on pedestal 6, can prevent printing board group 4 from generating resonance, increase its resistance to shock.Flexible shielded cable 7 with
Board group 4 is printed to connect by welding manner, all pads coat three proofings protective agents, with improve print board group waterproof, it is mould proof,
Corrosion Protection.It wears under the through-hole that flexible shielded cable 7 passes through 6 center of pedestal to the bottom of pedestal 6.
The gap between the through-hole and flexible shielded cable 7 at 6 center of pedestal is filled using epoxy resin or other casting glues,
To enhance the fastening force of flexible shielded cable 7 Yu 6 through-hole of pedestal.Two threaded holes are arranged in 6 bottom of pedestal.Using the second screw
11, cable clip 8, second packing ring 9, spring washer 10 compress flexible shielded cable 7 and its 6 bottom of shielded layer and pedestal, with reality
The continuity now shielded, and the fastening force that flexible shielded cable 7 is connect with pedestal 6 is further strengthened, avoid external force to flexibility
Shielded cable 7 causes to damage with printing 4 pad of board group.6 bottom groove of pedestal and cable are filled using room curing silicon rubber
Gap between folder 8, flexible shielded cable 7.
Shield 1 is processed using polyimide plastic plate, there is good abrasion resistance properties and environmental suitability.Shield 1 covers
Cover the top in pedestal 6.Silicon rubber bar 5 is placed at 1 interior grooves of shield, is tightened with pedestal 6 by screw thread, 6 spiral shell of pedestal
Coated thread locking glue, after shield 1 is installed in place, is connect using room curing silicon rubber coated shrouds 1 and the screw thread of pedestal 6 at line
At seam.Pedestal 6 is connected through a screw thread with shield 1, and seam crossing is sealed using silicon rubber bar, can effectively improve waterproof performance.
Above-mentioned printing board group 4 is equipped with wheel speed sensing circuit.The wheel speed sensing circuit, as shown in figure 3, being improved by Hall
Circuit K1, resistance R1-R2, zener diode R3 and capacitor C1-C2 composition.Resistance R1 is connected with one end of resistance R2, and shape
At the power input of wheel speed sensing circuit.The one of the other end of resistance R1 and the second end of Hall conditioning circuit K1 and capacitor C2
After end is connected, the square-wave signal output end of wheel speed sensing circuit is formed.The yin of the other end connection zener diode R3 of resistance R2
The first end of pole, one end of capacitor C1 and Hall conditioning circuit K1.The anode of zener diode R3, the other end of capacitor C1, suddenly
The third end of that conditioning circuit K1 and the other end of capacitor C2 are grounded simultaneously.
Hall conditioning circuit K1 incudes tested measuring mechanism, and machinery is converted to the side of its corresponding velocity of rotation
Wave signal can also export side identical with input service voltage magnitude in the case where revolving speed is 0 rev/min or extremely low speed conditions
Wave signal.Hall conditioning circuit K1 uses modularization Integrated design, can be improved reliability, testability and the dimension of wheel speed sensors
Repairing property.Voltage clamping of the zener diode R3 for Hall conditioning circuit K1 supply port is protected.Resistance R2 is improved for Hall
The current limliting of circuit K1 supply port.Resistance R1 is the pull-up resistor for Hall conditioning circuit K1 output port, enhancing output energy
Power.Capacitor C1, capacitor C2 are for filtering.
The utility model devises the Hall conditioning circuit based on hall device, and using other a small amount of components, realizes
Export square-wave signal, it is no longer necessary to which the post-processing link of traditional wheel speed sensors output signal simplifies wheel speed sensors
System integration application, reduces costs；In addition, the utility model additionally uses the wheel with adaptive adjustment magnetic field induction range
The range of fast sensing circuit, working gas gap is big, and the installation requirement of wheel speed sensors is low, easy to operate, solves wheel speed sensors
Installation requirement is high, the big problem of operation difficulty.
It should be noted that although the above embodiment described in the utility model be it is illustrative, this is not to this
The limitation of utility model, therefore the utility model is not limited in above-mentioned specific embodiment.The utility model is not being departed from
In the case where principle, the other embodiment that all those skilled in the art obtain under the enlightenment of the utility model is accordingly to be regarded as
Within the protection of the utility model.
Claims (4)
1. a kind of digital wheel speed sensors, including the wheel speed sensing circuit being set in printing board group (4)；It is characterized in that described
Wheel speed sensing circuit is made of Hall conditioning circuit K1, resistance R1-R2, zener diode R3 and capacitor C1-C2；Resistance R1
It is connected with one end of resistance R2, and forms the power input of wheel speed sensing circuit；The other end and Hall the conditioning electricity of resistance R1
After the second end of road K1 is connected with one end of capacitor C2, the square-wave signal output end of wheel speed sensing circuit is formed；Resistance R2's is another
Cathode, one end of capacitor C1 and the first end of Hall conditioning circuit K1 of one end connection zener diode R3；Zener diode R3
Anode, capacitor C1 the other end, the third end of Hall conditioning circuit K1 and the other end of capacitor C2 be grounded simultaneously.
2. a kind of digital wheel speed sensors according to claim 1, characterized in that still further comprise shield (1), base
Seat (6) and flexible shielded cable (7)；Printing board group (4) is fixed on the top of pedestal (6)；Flexible shielded cable (7) and printed board
Group (4) is connected by welding manner, is worn under the through-hole that flexible shielded cable (7) passes through pedestal (6) center to the bottom of pedestal (6)
Portion；Shield (1) is covered on the top of pedestal (6), and is connected using engagement thread.
3. a kind of digital wheel speed sensors according to claim 2, characterized in that pedestal (6) uses stainless steel or aluminium
Material is process.
4. a kind of digital wheel speed sensors according to claim 2, characterized in that shield (1) is moulded using polyimides
Flitch is process.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822001505.6U CN209014593U (en) | 2018-11-30 | 2018-11-30 | A kind of digital wheel speed sensors |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822001505.6U CN209014593U (en) | 2018-11-30 | 2018-11-30 | A kind of digital wheel speed sensors |
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| Publication Number | Publication Date |
|---|---|
| CN209014593U true CN209014593U (en) | 2019-06-21 |
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ID=66843313
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| Application Number | Title | Priority Date | Filing Date |
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| CN201822001505.6U Active CN209014593U (en) | 2018-11-30 | 2018-11-30 | A kind of digital wheel speed sensors |
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| CN (1) | CN209014593U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109374918A (en) * | 2018-11-30 | 2019-02-22 | 桂林航天电子有限公司 | A kind of digital wheel speed sensors |
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2018
- 2018-11-30 CN CN201822001505.6U patent/CN209014593U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109374918A (en) * | 2018-11-30 | 2019-02-22 | 桂林航天电子有限公司 | A kind of digital wheel speed sensors |
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