CN105526852B - Neutral gear is reversed gear position sensing sensor and system - Google Patents
Neutral gear is reversed gear position sensing sensor and system Download PDFInfo
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- CN105526852B CN105526852B CN201410520572.2A CN201410520572A CN105526852B CN 105526852 B CN105526852 B CN 105526852B CN 201410520572 A CN201410520572 A CN 201410520572A CN 105526852 B CN105526852 B CN 105526852B
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Abstract
A kind of sensor, including magnet arrangement, three-dimensional sensing unit and processing unit；Two periodic signals for reflecting magnet arrangement rotary motion are converted into the first linear signal of reflection magnet arrangement rotary motion by the processing unit；Two periodic signals for reflecting magnet arrangement linear motion are converted into the second linear signal of reflection magnet arrangement linear motion by processing unit；Sensor further include: correcting circuit, the first monostable circuit, the second monostable circuit, combinational circuit；It is combined for receiving the output of the first monostable circuit and the second monostable circuit, and by the reverse gear signal of position of the signal of the instruction neutral gear position of the first monostable circuit output and the instruction that the second monostable circuit exports, generates the binary signal that reverses gear.Sensing signal is processed into binary signal by correcting circuit and monostable circuit processing by the present invention, is judged by combinational circuit, sensing is accurate, and circuit is simple.
Description
Technical field
The present invention relates to automobile sensing device, in particular to automobile gearbox reverses gear position sensing sensor in neutral gear.
Background technique
It is in industry known for just having surveyed device using position to come the position of probe vehicle gearbox shaft.
Traditionally, rotation and the linear movement position of shaft are detected using mechanical contact position sensing apparatus, however,
Mechanical contact, which has just surveyed device, to be had the shortcomings that, including mechanical wear, measurement accuracy and reliability it is low and do not have self diagnosis
Ability etc..
Have suggestion and sensed using electronics sensing device shaft rotation and linear movement (with judge to reverse gear and neutral gear)
Gear, however, proposed electronics sensing device shows not when can face design feasibility and operating condition (or environment) variation
Good defect.
Therefore, it is necessary to be provided with a position sensing apparatus, which overcomes existing position sensing dress
Set existing defect and deficiency when detecting shaft neutral gear and reversing gear position.
Summary of the invention
The present invention provides the sensor of a kind of rotation for sensing shaft and shift position, which includes:
A kind of sensor, characterized by comprising:
Sensing unit for detecting rotary motion and the linear running of shaft, and generates the of reflection shaft rotary motion
Second linear signal of one linear signal and reflection shaft linear motion；
First linear signal is converted into the first trigger signal, and the second linear signal is converted by correcting circuit
Two trigger signals；
First monostable circuit, under the triggering of the first trigger signal, the two of the first monostable circuit output instruction neutral gear position
Binary signal；
Second monostable circuit, under the triggering of the second trigger signal, the output of the second monostable circuit indicates the axial position that reverses gear
Binary signal；
Combinational circuit, for receiving the output of the first monostable circuit and the second monostable circuit, and by the described first monostable electricity
The instruction that the binary signal and the second monostable circuit of the instruction neutral gear position of road output export is reversed gear the binary system of axial position
Signal is combined, and generates the position binary signal that reverses gear.
And a kind of sensing system, comprising:
Sensor above-mentioned；With
Magnet arrangement, the magnet arrangement are attached in shaft and (do synchronous axial linear movement and rotation with shaft
Transhipment is dynamic.
And a method of manufacture and control sensor as aforementioned.
And a method of manufacture and control aforementioned sensor system.
Beneficial effects of the present invention first is that: using one piece wide large-sized electromagnet covering pivot all effectively
Length can accurately sense the shift position of all directions of shaft.
Beneficial effects of the present invention second is that: moved using the straight line of one block of magnet one three-dimensional hall sensor sensing shaft
Dynamic and rotary motion meets the requirement of all angles measurement, and precision is more multiple, and hall sensor measurement is higher.
Beneficial effects of the present invention third is that: only pass through and increase correcting circuit and monostable electricity outside three-dimensional hall sensing unit
Sensing signal is processed into binary signal by road processing, is judged by combinational circuit, and circuit is simple, and transformation is convenient.
Beneficial effects of the present invention fourth is that: the modules such as analog to digital conversion circuit, processing unit can make three-dimensional Hall sense
The module for answering unit included, does not need to newly increase these units, entire sensor structure is simple, low in cost.
Beneficial effects of the present invention fifth is that: monostable circuit use Schmidt trigger (Schmitt trigger), can reach
To function identical with other complex chips and effect, and cost is more cheap.
Detailed description of the invention
Fig. 1 describes the positional relationship stereoscopic schematic diagram of shaft of the present invention and magnet arrangement；
Fig. 2 describes the structural schematic diagram along shaft cross-sectional direction of sensing device of the invention；
Fig. 3 describes sensing device of the invention along the structural schematic diagram in shaft axis direction；
Fig. 4 describes the electrical block diagram of process circuit of the present invention；
Fig. 5 describes the truth table that combinational circuit is made with calculated；
Fig. 6 describes the gear setting of the applicable gearbox of the present invention；
Fig. 7 describes the treatment process of the binary signal of present invention instruction neutral gear position；
Fig. 8 describe the present invention instruction reverse gear position binary signal treatment process.
Specific embodiment
Various specific embodiments of the invention are described below with reference to the attached drawing for constituting this specification a part.
Although it should be understood that be used in the present invention indicate direction term, such as "front", "rear", "upper", "lower", " left side ",
" right side " etc. describes various example features and element of the invention, but herein using these terms are merely for convenience of description
Purpose, the determination based on the example orientations shown in attached drawing.Since disclosed embodiment of this invention can be according to difference
Direction setting, so these indicate directions term be intended only as illustrate and should not be considered as limiting.In the conceived case,
Identical or similar appended drawing reference used in the present invention refers to identical component.
Fig. 1 describes the positional relationship stereoscopic schematic diagram of shaft 106 and magnet arrangement 104 of the present invention.
As shown in Figure 1, sensor 100 includes the magnet arrangement 104 for sensing automobile gearbox shaft 106 and moving, magnet
Device 104 is arranged in shaft 106 and moves with shaft 106.Shaft 106 can be along 105 direction of axis (arrow in Fig. 1
Head AA ' direction) linear motion of (or round-trip) is done back and forth, it can also be along the transverse direction (side arrow BB ' in figure of axis 105
To) it with axle center 105 is the rotary motion that (or round-trip) is done back and forth in the center of circle；Magnet arrangement 104 is arranged above shaft 106, magnet
The length of device 104 is enough in the effective search coverage for being covered on the mobile most of length and width of shaft 106, and follows and turn
Axis 106 does straight line and rotary motion, and sensor can detect magnet 104 in the position of each gear.
Fig. 2 describes the structural schematic diagram along shaft cross-sectional direction of sensing device 102 of the invention.
As shown in Fig. 2, position sensor 100 includes magnet arrangement 104,102 (i.e. 3D hall sensor of three-dimensional sensing unit
102), process circuit 110.Wherein three-dimensional sensing unit 102 and magnet arrangement (104) physically separate a distance (gap) H.
Shaft 106 can do the left-right rotation in the direction arrow BB ' along axle center 105 in figure, rotational steps be left and right be up to ±
20 °, i.e., range of+20 ° of the left side -20 ° of right side between for entire 106 rotary motion of shaft scope of activities.The rotation of shaft 106
Transhipment is dynamic to be along 210 asymmetrical arrangement of center line.However, the slewing area of asymmetric setting is for a person skilled in the art
It is also possible.Indicate that shafts 106 are in position range of putting into gear (including reverse gear or forward gear) ± 20 ° of positions, in ± 5 ° of tables
Show that shaft 106 is in neutral gear position range.When shaft 106 is taken exercises, magnet arrangement 104 is moved with shaft 106, magnet
Device 104 can generate change in magnetic flux density to the position (or detecting location) where three-dimensional sensing unit 102, and then generate magnetic field
Variation.When the influence for the changes of magnetic field that three-dimensional sensing unit 102 receives magnet arrangement 104 is, three-dimensional sensing unit 102 be can produce
Electric signal (such as PMW, SENT etc.).As exemplary embodiment, three-dimensional sensing unit 102 may include hall sensing circuit,
Signal is generated for responding the changes of magnetic field as caused by change in magnetic flux density.In the situation shown in fig. 2, work as rotational steps
When being ± 5 °, shaft 106 is in neutral gear position range, and what sensing device 102 exported is high level signal；When rotational steps be ±
At 20 °, shaft 106 is in position range of putting into gear, and what sensing device 102 exported is low level signal.Sensing device 102 will export
Electric signal send process circuit 110 to.Since shaft 106 does back and forth period rotation, thus three-dimensional sensing unit 102 is felt
It surveys and the signal exported is also in periodically variable sin/cos signal.Specifically, magnetic flux density (or magnetic field) is sensed in three-dimensional
Along 280 (B of three-dimensional coordinate around unit 102x, By, BZ) variation；Three-dimensional sensing unit 102 is usually designed to detection along BxOr
ByIn one-dimensional or bidimensional changes of magnetic field, three-dimensional sensing unit 102 can be configured to be located at the magnetic of rotation and linear movement
Change in magnetic flux density caused by iron device 104 or changes of magnetic field sensitivity and sensitive detecting location.In Fig. 2, it is close that B represents magnetic flux
Degree, BxIt indicates along shaft 106 in the radial direction and perpendicular to the measurement of the magnetic flux density of paper；ByIt indicates and 106 phase of shaft
It cuts and is measured with the coplanar magnetic flux density in 106 cross section of shaft；BzIndicate tangent and at the same time and B with shaft 106xByIt hangs down
Straight magnetic flux density measurement.Three-dimensional sensing unit 102 is from BxDimension and ByDimension synchronization (or simultaneously) sense three-dimensional sensing unit
Change in magnetic flux density and/or changes of magnetic field around 102 and analog voltage signal (the movement letter for meeting two function lines generated
Number) output one curve of output be cosine-shaped analog voltage signal export, another curve of output be sinusoidal analog voltage believe
Number output.
Fig. 3 describes sensing device 102 of the invention along the structural schematic diagram in shaft axis direction.
As shown in figure 3, back and forth linear motion of the shaft 106 along the direction arrow AA ', magnet arrangement 104 is with shaft 106
It synchronizes and moves in a straight line.Three-dimensional sensing unit 102 is from ByDimension and BZDimension (or BxDimension and BZDimension) synchronous (or simultaneously) sense
The change in magnetic flux density and/or changes of magnetic field surveyed around three-dimensional sensing unit 102 and the simulation for meeting two function lines generated
Voltage signal (motor message) exports a curve of output as the output of cosine-shaped analog voltage signal, and another curve of output is positive
The output of string shape analog voltage signal.
Fig. 4 describes the electrical block diagram of process circuit 110 of the present invention.
As shown in figure 4, process circuit 110 include D/A converting circuit 302, processing unit 304, correcting circuit (306,
307), monostable circuit (308,309), combinational circuit 310；Analog conversion circuit 302 is three-dimensional by the connection of both threads road 321 and 322
Sensing unit 109, processing unit 304 by both threads road 323 and 324 connect analog conversion circuit 302, correcting circuit (306,
307) processing unit 304 is connected by both threads road 325 and 326 respectively, monostable circuit (308,309) passes through both threads road respectively
327 and 328 connections correcting circuit (306,307), monostable circuit (308,309) are exported signal by both threads road 329 and 330
To combinational circuit 310, monostable circuit is Schmidt trigger.Wherein, D/A converting circuit 302, by three-dimensional sensing unit 10 9
The periodic signal of output be converted into digital signal from analog signal.Processing unit 304 (i.e. processing circuit 304), by three-dimensional sense
It surveys the sensing of unit 102 and the sin/cos signal after the conversion of D/A converting circuit 302 exported is converted into the linear of linear function
Model (such as Fig. 7 and Fig. 8), conversion method use reduction formula below:
(1) output voltage (V)=angle function=m x (angle)+b=m x θ+b；
(2) output voltage (V)=stroke function=m x (stroke)+b=m x S+b；
(3) tan (θ)=sin (θ)/cos (θ)=Bx/By；
(4) θ=arctan (θ)=arc (sin (θ)/cos (θ))=arc (Bx/By)；
(5) output voltage (V)=m x arc ((sin (θ)/cos (θ))+b=m x arc (Bx/By)+b；
(6) conversion of per stroke and angle=(magnet arrangement 104 linear motion stroke x2)/360 °.
In the step of above-mentioned 6 mathematical formulaes are reflected, the linear motion effective travel x2 of magnet arrangement 104 corresponds to
One circumferential periodic；That is: enter the upper half that stroke (from the axial position that reverses gear to forward gear axial position) can correspond to the circumference phase
Week, and stroke (from advance gear shaft to position to the axial position that reverses gear) can correspond to the lower half of circumference phase；M and b (b can be 0)
It is two constant parameters, wherein m indicates the slope of linear function, and parameter b and k can be according to for three-dimensional 102 realities of hall sensing unit
The device that border uses is obtained by simulation.θ is that the rectilinear path of magnet arrangement 104 is converted to the rotation angle after circumferential periodic
Degree, BxAnd ByMagnetic flux respectively in X reversely and in Y-direction.
Continuing with Fig. 4 is participated in, correcting circuit is divided into correcting circuit 306 and correcting circuit 307, and correcting circuit 306 is by first
Linear signal is converted into the first trigger signal, and the second linear signal is converted into the second trigger signal simultaneously by correcting circuit 307；It is single
Equalizing network 308 receives the first trigger signal that correcting circuit 306 exports and is converted into the binary system letter of instruction neutral gear position
Number；Monostable circuit 309 receive correcting circuit 307 export the second trigger signal and be converted into instruction reverse gear position two into
Signal processed.Monostable circuit 309 and monostable circuit 308 are one kind of Schmidt trigger, and there are two threshold voltages for it, are positive respectively
To threshold voltage and negative sense threshold voltage, make circuit state during input signal rises to high level from low level
The input voltage of variation is known as forward threshold voltage (V+), input signal from high level drop to it is low level during make electricity
The changed input voltage of line state is known as negative sense threshold voltage (V-).When input voltage increases from low to high, reaches V+,
Output voltage mutates, and input voltage Vi is lower by height, reaches V-, output voltage mutates, thus can produce two
System skip signal.Combinational circuit 310 receives the instruction neutral gear position that monostable circuit 308 and monostable circuit 309 export simultaneously
Binary signal and instruction are reversed gear the binary signal of axial position, and by combination and are calculated, i.e., (connect playing an output end
331) show that shaft 106 is being reversed gear or the judgement signal of neutral gear position.Digital-to-analogue as one embodiment, in process circuit 110
Conversion circuit 302, processing unit 304, circuit group of the correcting circuit (306,307) all to be set in three-dimensional sensing unit 109 itself
Part, monostable circuit (308,309) and combinational circuit 310 are the circuit unit of peripheral hardware in entire process circuit 110.As a reality
Example is applied, hall sensor of the invention uses MLX90333 IC chip.
Fig. 5 describes the truth table that combinational circuit 310 is made with calculated.
As shown in figure 5, the rotary motion of neutral gear position signal designation shaft；The position signal that reverses gear indicates the straight line fortune of shaft
Dynamic, " low " the expression low level of value, "high" indicates high level；" position of reversing gear " indicate shaft 106 whether in the true value reversed gear,
It is worth " low " expression not in reverse gear, "high" is indicated in position of reversing gear.As shown in the figure, only when neutral gear position signal is low electricity
Flat, when the position signal that reverses gear is high level, the value of shaft 106 is just height, i.e. expression shaft 106 is in position of reversing gear.
Fig. 6 describes the gear setting of the applicable gearbox of the present invention.
As shown in fig. 6, gearbox of the invention is the setting of 8 gears, 6 forward ranges (gear 1, gear 2, gear 3,
Gear 4, gear 5, gear 6) divide the every side in two sides 3 along neutral gear (neutral gear N1, neutral gear N2, neutral gear N3) be symmetrical arranged, that is, gear
Position 1 and gear 2 are along neutral gear N1It is symmetrical arranged, gear 3 and gear 4 are along neutral gear N2It is symmetrical arranged, 6 edge of gear 5 and gear
Neutral gear N3It is symmetrical arranged.Reverse gear (gear R) is asymmetric to be located at neutral gear (neutral gear N0) side.Shadow part in figure
601 are divided to indicate neutral gear position ranges, i.e., range when 106 rotational steps of shaft are ± 5 °；Dash area two sides are position of putting into gear
Range, expression shaft 106, which rotates to, reverses gear on R or forward range, i.e., range when 106 rotational steps of shaft are ± 20 °.Shade
Part 602 indicates the axial position that reverses gear, and indicates that shaft 106 is linearly moved to the side of reverse gear；It is on the right side of dash area 602
Forward gear axial position indicates that shaft 106 is linearly moved to the side of forward gear gear.Three-dimensional sensing unit 102 can sense
Gearbox shaft 106 is in the position of each gear.Reverse gear range is entered laterally when shaft 106 makes rotating motion, i.e. gear R
Or when forward gear gear (including gear 1, gear 2, gear 3, gear 4, gear 5 and gear 6), three-dimensional sensing unit 102 is generated
NPS low level signal；When shaft 106 enters laterally neutral gear position range (neutral gear N0, neutral gear N1, neutral gear N2With neutral gear N3)When, three
It ties up sensing unit 102 and generates NPS high level signal.Enter the axial direction of reversing gear at end of reversing gear when shaft 106 moves along a straight line along axis 105
Position (may be the R or adjacent neutral gear N that reverses gear0), three-dimensional sensing unit 102 generates RPS high level signal, when shaft 106 is straight
Line moves into the forward gear axial position of forward gear side: including gear 1, gear 2, gear 3, gear 4, gear 5, gear 6
And ipsilateral adjacent neutral gear N1, neutral gear N2With neutral gear N3, the three-dimensional generation of sensing unit 102 RPS low level signal.Comparison diagram 5
For truth table it is recognised that when NPS is high level signal, combinational circuit 310 may determine that shaft 106 certainly in neutral gear position
It sets；When NPS is low level, and RPS is for high level, and shaft 106 is centainly in the position R that reverses gear, because when RPS is high level
When, shaft 106 is only possible in two positions, it may be assumed that reverse gear R and neutral gear N0；And when NPS is simultaneously low level, shaft 106 is just
It only can be in the position R that reverses gear.
Fig. 7 describes the treatment process of the binary signal of present invention instruction neutral gear position.
As shown in fig. 7, three-dimensional sensing unit 102 senses magnet on first the second dimensional plane of peacekeeping that shaft 106 moves
The rotary motion of device 104 generates two sin/cos periodic signals of reflection 104 rotary motion of magnet arrangement；Digital-to-analogue conversion electricity
Two sin/cos periodic signals of the output of three-dimensional sensing unit 109 are converted into digital signal from analog signal by road 302, number
Word signal is still in sin/cos mechanical periodicity, i.e., waveform signal as shown in Figure 7a, and horizontal axis represents the rotation of shaft 106
Angle, θ, vertical pivot represent the voltage V that three-dimensional sensing unit 109 generates.Processing unit 304 (i.e. processing circuit 304) is through digital-to-analogue conversion
Sin/cos signal after circuit 302 is converted is converted into the linear model of linear function, before the reduction formula that conversion method uses
Literary already described, first linear signal of figure, that is, waveform as shown in Figure 7b, horizontal axis represent the angle, θ of the rotation of shaft 106, vertical pivot generation
The voltage V that table three-dimensional sensing unit 109 generates.Process circuit 110 is equipped with storage device, and storage device is for providing several
Reference voltage point includes at least the first reference voltage point V1, the second reference voltage point V2With third reference voltage point V3；First ginseng
Examine electrical voltage point V1, the second reference voltage point V2And third reference voltage point V3Represent three electrical voltage points on the first linear signal；
When sensing the first linear signal and the first reference voltage point V1, the second reference voltage point V2, third reference voltage point V3It is equal
When, correcting circuit 306 generates the first trigger signal such as Fig. 7 C triangular waveform, wherein the first reference voltage point V1To the second ginseng
Examine electrical voltage point V2Between be rising waveform, the second reference voltage point V2To with third reference voltage point V3Between be falling waveform, the
Two reference voltage point V2For triangular wave summit；Monostable circuit 308 receives the first touching that correcting circuit 306 exports by conducting wire 327
Signal and be converted into the binary signal of instruction neutral gear position；That is the binary signal of waveform as shown in figure 7d.
Fig. 8 describe the present invention instruction reverse gear position binary signal treatment process.
As shown in figure 8, its signal processing basic process and Fig. 7 are essentially identical, three-dimensional sensing unit 102 is in shaft
It is as shown in Figure 8 a that two sin/cos periodic signals that reflection magnet arrangement 104 moves along a straight line are generated when 106 movement, horizontal axis representative
The formation S that shaft 106 moves along a straight line, vertical pivot represent the voltage V that three-dimensional sensing unit 109 generates.Processing unit 304 (is handled
Circuit 304) the sin/cos signal after the conversion of D/A converting circuit 302 is converted into the linear model of linear function, conversion side
Method is already described above using reduction formula below, second linear signal of figure, that is, waveform as shown in Figure 8 b, and horizontal axis, which represents, to be turned
The formation S that axis 106 moves along a straight line, vertical pivot represent the voltage V that three-dimensional sensing unit 109 generates.Storage device is also stored with the 4th
Reference voltage point V4, the 5th reference voltage point V5With the 6th reference voltage point V6；4th reference voltage point V4), the 5th reference voltage
Point V5, the 6th reference voltage point V6Three electrical voltage points on the second linear signal are represented, wherein the 5th reference voltage point V5With the 6th
Reference voltage point V6Value it is identical；When sensing the second linear signal and the 4th reference voltage point V4, the 5th reference voltage point V5、
6th reference voltage point V6When equal, correcting circuit 307 generates the second trigger signal of step shape waveform as shown in Figure 8 c, wherein
4th reference voltage point V4To the 5th reference voltage point V5Between be rising waveform, because of the 5th reference voltage point V5With the 6th ginseng
Examine electrical voltage point V6Value it is identical, so the 5th reference voltage point V5To the 6th reference voltage point V6The horizontal waveform in position.Monostable circuit
309 by conducting wire 328 receive correcting circuit 307 export the second trigger signals and be converted into instruction reverse gear position two into
Signal processed, the i.e. binary signal of waveform as shown in figure 8d.
Combinational circuit 310 is equipped with comparator, the instruction neutral gear position that monostable circuit 308 and monostable circuit 309 export simultaneously
Binary signal and instruction reverse gear position binary signal be combined circuit 310 receive after, pass through the true value of comparator installation diagram 5
Table is carried out and is calculated, and show that shaft 106 is being reversed gear or the judgement signal of neutral gear position playing an output end (connect 331).
Although with reference to the specific embodiment shown in attached drawing, present invention is described, but it is to be understood that not
Away from present invention teach that spirit and scope and background under, neutral gear of the invention reverse gear position sensing sensor can there are many become
Change form.Art technology those of ordinary skill will additionally appreciate different modes to change disclosed embodiment of this invention
In parameter, such as the type of size, shape or element or material each falls within the present invention and spirit and scope of the claims
It is interior.
Claims (20)
1. a kind of sensor (100), characterized by comprising:
Sensing unit for detecting rotary motion and the linear motion of shaft (106), and generates reflection shaft (106) rotation simultaneously
Second linear signal of the first dynamic linear signal of transhipment and reflection shaft (106) linear motion；
First linear signal is converted into the first trigger signal by the first correcting circuit (306) and the second correcting circuit (307), and
And second is linearly believed
Number it is converted into the second trigger signal；
First monostable circuit (308), under the triggering of the first trigger signal, the first monostable circuit (308) output instruction neutral gear position
The binary signal set；Second monostable circuit (309), under the triggering of the second trigger signal, the second monostable circuit (309) output
Indicate the binary signal of axial position of reversing gear；
Combinational circuit (310), for receiving the output of the first monostable circuit (308) and the second monostable circuit (309), and will be described
The binary signal of the instruction neutral gear position of first monostable circuit (308) output and the instruction of the second monostable circuit (309) output
The binary signal of axial position of reversing gear is combined, and generation is reversed gear position binary signal；
The combination of the combinational circuit (310) is that the binary signal and instruction that will indicate neutral gear position reverse gear the two of axial position
Binary signal carries out and operation.
2. the sensor as described in claim 1, it is characterised in that further include:
The magnet arrangement (104) that can be rotated and move along a straight line includes a neutral gear position in the range of the rotary motion
It sets range, reverses gear position in the range of the linear motion comprising one；With
Processing unit (304)；
The sensing unit is three-dimensional sensing unit (102), and the three-dimensional sensing unit (102) is flat from the first peacekeeping second dimension
The rotary motion that magnet arrangement (104) are sensed on face, generates two periodic signals of reflection magnet arrangement (104) rotary motion；
The three-dimensional sensing unit (102) senses the linear motion of magnet arrangement (104) from the first peacekeeping third dimensional plane,
Generate two periodic signals of reflection magnet arrangement (104) linear motion；
The processing unit (304) will reflect that two periodic signals of magnet arrangement (104) rotary motion are converted into reflection magnet
First linear signal of device (104) rotary motion；
The processing unit (304) will reflect that two periodic signals of magnet arrangement (104) linear motion are converted into reflection magnetic
Second linear signal of iron device (104) linear motion.
3. the sensor as described in claim 1, it is characterised in that: when first monostable circuit (308) exports instruction sky
The low level signal that gear is set, when second monostable circuit (309) exports the high level signal for the axial position that indicates to reverse gear, group
Close the signal that circuit (310) generate position (R) that reverse gear.
4. the sensor as described in claim 2, which is characterized in that
Two periodic signals of reflection magnet arrangement (104) rotary motion that the three-dimensional sensing unit (102) generates are respectively
Sinusoidal and cosine waveform signal；
It is described three-dimensional sensing unit (102) generate reflection magnet arrangement (104) linear motion two periodic signals be respectively
Sinusoidal and cosine waveform signal.
5. the sensor as described in claim 2, which is characterized in that further include:
Analog to digital conversion circuit (302), the reflection magnet arrangement (104) for sensing the three-dimensional sensing unit (102)
The periodic signal of rotary motion and linear motion is converted into digital signal from analog signal.
6. the sensor as described in claim 5, it is characterised in that:
The processing unit (304) converts the sine of analog-digital conversion circuit as described (302) output or cosine waveform signal respectively
At the first linear signal and the second linear signal of once linear functional form.
7. sensor as claimed in claim 5, it is characterised in that:
The three-dimensional sensing unit (102) includes 3D hall sensor.
8. sensor as claimed in claim 7, it is characterised in that:
The axial linear movement and rotation of synchronous detection magnet arrangement (104) of the 3D hall sensor.
9. the sensor as described in claim 2, it is characterised in that:
Further include process circuit (110), connects the signal output of the three-dimensional sensing unit (102)；
Storage device is equipped in the process circuit (110), storage device is described several for providing several reference voltage points
A reference voltage point at least has the first reference voltage point (V1), the second reference voltage point (V2), third reference voltage point
(V3), the 4th reference voltage point (V4), the 5th reference voltage point (V5) and the 6th reference voltage point (V6)；
The first reference voltage point (V1), the second reference voltage point (V2) and third reference voltage point (V3) represent described
Three electrical voltage points on one linear signal；When sensing first linear signal and the first reference voltage point (V1), the
When 2 reference voltage points (V2), third reference voltage point (V3) are equal, first correcting circuit (306) generates described first
Trigger signal；
The 4th reference voltage point (V4), the 5th reference voltage point (V5), the 6th reference voltage point (V6) represent described second
Three electrical voltage points on linear signal；When sensing second linear signal and the 4th reference voltage point (V4), the 5th
When reference voltage point (V5), the 6th reference voltage point (V6) are equal, second correcting circuit (307) generates second triggering
Signal, wherein the 5th reference voltage point (V5) is identical with the value of the 6th reference voltage point (V6).
10. the sensor as described in claim 1, it is characterised in that:
First trigger signal is triangular waveform；Second trigger signal is step shape waveform.
11. a kind of sensing system, comprising:
Such as the described in any item sensors of claim 1 to 10；With
Magnet arrangement (104), the magnet arrangement (104) are attached on shaft (106) and with shaft (106)
Do synchronous axial linear movement and rotary motion.
12. the sensing system as described in claim 11, it is characterised in that:
The sensing unit is three-dimensional sensing unit (102), the three-dimensional sensing unit (102) and the magnet arrangement (104)
Physically separate a distance.
13. the sensing system as described in claim 11, it is characterised in that:
The first monostable circuit (308) generates high level signal, rotation when the magnet arrangement (104) is moved to neutral gear position range
To put into gear position range when the first monostable circuit (308) generate low level signal；The magnet arrangement (104) is moved straightly to
Reverse gear axial position when the second monostable circuit (309) generate high level signal, second is monostable when being moved to forward gear axial position
Circuit (309) generates low level signal.
14. the sensing system as described in claim 13, it is characterised in that:
The neutral gear position range is that the shaft (106) make rotating motion range when being moved to all neutral gear positions；
It is described put into gear position range be the shaft (106) make rotating motion be moved to it is all put into gear position when range；It is described
The axial position that reverses gear refers to that the shaft (106) is moved straightly to reverse gear position or neutral gear position adjacent thereto；The advance
Gear axial position is that the shaft (106) are moved to forward gear position or neutral gear position adjacent thereto.
15. the sensing system as described in claim 14, it is characterised in that:
The neutral gear position range is that the angle of the shaft (106) rotary motion is range between ± 5 °；It is described to put into gear
The range that position range is the angle of the shaft (106) rotary motion when being ± 20 °.
16. the sensing system as described in claim 13, it is characterised in that:
When the shaft (106) is when axial turn signal is in high level, the combinational circuit (310) judges institute
It states shaft (106) and is in neutral gear position.
17. the sensing system as described in claim 13, it is characterised in that:
It is described when the shaft (106) is in low level in axial turn signal, while the signal that moves linearly is in high level
Combinational circuit (310) judges that the shaft (106) are in position of reversing gear.
18. the sensing system as described in claim 11, it is characterised in that:
The gear for the gearbox that the sensing system is suitable for is the setting of 8 gears, and 6 forward ranges divide two sides every side 3 edge
Neutral gear is symmetrical arranged, and reverse gear is asymmetric to be located at neutral gear side.
19. a kind of method, for manufacturing and operating the sensor of the claim as described in claim any one of 1-10.
20. a kind of method, for manufacturing and operating the sensing system of the claim as described in claim any one of 11-18.
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| CN201410520572.2A CN105526852B (en) | 2014-09-30 | 2014-09-30 | Neutral gear is reversed gear position sensing sensor and system |
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| CN201410520572.2A CN105526852B (en) | 2014-09-30 | 2014-09-30 | Neutral gear is reversed gear position sensing sensor and system |
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| CN105526852A CN105526852A (en) | 2016-04-27 |
| CN105526852B true CN105526852B (en) | 2019-07-12 |
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| CN108953596A (en) * | 2017-05-18 | 2018-12-07 | 泰科电子(上海)有限公司 | For sensing the sensor-based system of gear rotating shaft position |
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| CN105526852A (en) | 2016-04-27 |
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