CN202974183U

CN202974183U - Sensor for sensing angle position scope of rotating shaft

Info

Publication number: CN202974183U
Application number: CN 201220160977
Authority: CN
Inventors: 何赛德-奥利弗·萨尔瓦多; 蒙齐希·索斯藤
Original assignee: Tyco Electronics AMP GmbH; Tyco Electronics Corp
Priority date: 2012-04-16
Filing date: 2012-04-16
Publication date: 2013-06-05
Anticipated expiration: 2022-04-16

Abstract

The utility model provides a sensor for sensing the angle position scope of a rotating shaft. The sensor comprises an indication circuit and an adjustment circuit, the indication circuit is used for generating a two-state signal including a first signal state and a second signal state in response to the rotation of a bipolar magnet apparatus, the bipolar magnet apparatus is additionally connected to the rotating shaft (108) and is suitable for being rotated with the rotating shaft together, and the adjustment circuit is used for adjusting the two-state signal to compensate the operation condition change of the sensor. When the rotating shaft is in the angle position scope, the two-state signal is at the first signal state, and when the rotating shaft exceeds the angle position scope, the two-state signal is at the second signal state. The width and/or offset of the two-state signal of the sensor can be adjusted for compensation in response to the operation condition change.

Description

A kind of sensor of the angular position range for the sensing rotating shaft

Technical field

The utility model relates generally to position sensing apparatus, and relates more specifically to survey sensing apparatus and the method for the angular position range of rotating shaft.

Background technology

The angle position that the use location sensing apparatus is surveyed rotating shaft is known in the industry.

Traditionally, survey the angle position of rotating shaft with the mechanical contact position sensing apparatus.Yet the mechanical contact position sensing apparatus has some shortcomings, comprises that mechanical wear, angle measurement accuracy and reliability are low and there is no self diagnostic capability.

The special angle position of rotating shaft is surveyed in existing suggestion with the electronics sensing apparatus.Yet the electronics sensing apparatus of advising can face the design feasibility and can face the defective of performing poor when running into operating conditions (or environment) variation.

Therefore, be necessary to provide a kind of position sensing apparatus, this position sensing apparatus has overcome defective and the deficiency that existing position sensing apparatus exists when surveying the rotating shaft angle position.

The utility model content

In first aspect, the utility model provides a kind of sensor of the angular position range for the sensing rotating shaft, and this sensor comprises:

Indicating circuit, the rotation that is used for response bipolar magnet device produces the two state signaling with first signal state and secondary signal state, and described bipolar magnet device is attached in described rotating shaft and is suitable for rotating together with described rotating shaft; And

Processing unit is used for regulating described two state signaling to compensate the variation of described sensor operating conditions;

Wherein, when described rotating shaft was in described angular position range, described two state signaling was at the first signal state, and when described rotating shaft exceeded described angular position range, described two state signaling was at the secondary signal state.

Further, sensor further comprises: memory storage, be used for providing at least two reference voltage points, and described at least two reference voltages point has the first reference voltage point and the second reference voltage point, represents two electrical voltage points on a linear function line; Sensing apparatus is used for the electric signal that response is sensed along the change in magnetic flux density generation of bidimensional when described rotating shaft is rotated when described bipolar magnet device; And comparison means, be used for electric signal and described two the reference voltage points of sensing are compared; Wherein, when the voltage of the electric signal that senses equated with described the first voltage reference points or described the second reference voltage point, described indicating circuit produced described first signal state.

Further, sensor further comprises: memory storage, be used for providing at least two reference voltage points, and described at least two reference voltages point has the first reference voltage point and the second reference voltage point, represents two electrical voltage points of a linear function line; Sensing apparatus is used for the electric signal that response is sensed along the change in magnetic flux density generation of bidimensional when described rotating shaft is rotated when described bipolar magnet device; And comparison means, be used for electric signal and described two the reference voltage points of sensing are compared; Between described the first reference voltage point and described the second reference voltage point in scope, described indicating circuit produces described first signal state when the voltage of described electric signal.

Further, sensor further comprises: memory storage, be used for providing at least two reference voltage points, and described at least two reference voltages point has the first reference voltage point and the second reference voltage point, represents two electrical voltage points on a linear function line; Sensing apparatus is used for the electric signal that response is sensed along the change in magnetic flux density generation of bidimensional when described rotating shaft is rotated when described bipolar magnet device; And comparison means, be used for electric signal and described two the reference voltage points of sensing are compared; When the voltage of the electric signal that senses exceeds scope between described the first reference voltage point and described the second reference voltage point, or outside the scope between described the first reference voltage point and described the second reference voltage point, described indicating circuit produces described secondary signal state.

Further, sensor further comprises: memory storage, be used for providing at least two pairs of reference voltage points, described at least two pairs of reference voltages point has first pair of reference voltage point and the second pair of reference voltage point and represents four electrical voltage points on the linear function line, wherein said first pair of reference voltage point is designated as has the first magnitude of voltage, and described second pair of reference voltage point is designated as and has the second voltage value; Sensing apparatus is used for response bipolar magnet device change in magnetic flux density along bidimensional when described rotating shaft is rotated and produces the electric signal that senses; And comparison means, be used for the magnitude of voltage of the described electric signal that senses and described the first appointment and the magnitude of voltage of described the second appointment are compared; Wherein, when the magnitude of voltage of the magnitude of voltage of the voltage of the electric signal that senses and described the first appointment or described the second appointment equates, the voltage of perhaps working as the electric signal that senses is in scope between the magnitude of voltage of the magnitude of voltage of described the first appointment and described the second appointment the time, and described indicating circuit produces the first signal state; Wherein, during less than the magnitude of voltage of described the first appointment or greater than the magnitude of voltage of described the second appointment, described indicating circuit produces the secondary signal state when the voltage of the electric signal that senses.

Further, separate distance or a space on described sensing apparatus and described bipolar magnet device physical.

Further, described linear function line install or use described sensor before response be calibrated under mode of operation/simulate when described bipolar magnet device change in magnetic flux density along bidimensional when described rotating shaft rotation 360 is spent.

Further, the variation of the angle position of the described rotating shaft of described two state signaling response is changed between described first signal state and described the second status signal.

Further, the described angular position range of described rotating shaft is the neutral gear position scope on shift lever.

Further, described processing unit is regulated the width of described two state signaling or skew with the variation of the operating conditions that compensates described sensor, and the variation of described operating conditions comprises the variation of the parameters of operating part that uses in the variation in space, variation of ambient temperature and described sensor.

Further, described processing unit produces the K scale-up factor with the width of regulating described two state signaling and the variation that is offset with the parameters of operating part that is used in the variation, variation of ambient temperature and the described sensor that compensate the space.

Further, sensor further comprises: threshold circuit is used for the threshold voltage on offer curves shape function line; And sensing device, be used for the electric signal that response senses along the magnetic flux change generation of one dimension when described rotating shaft is rotated when described bipolar magnet device; Wherein, when the voltage of the electric signal that senses higher or lower than or when equaling described threshold voltage, described indicating circuit produces the first signal state, and the voltage of working as the electric signal that senses is during below or above described threshold voltage, and described indicating circuit produces the secondary signal state.

Further, described threshold voltage, described shaped form function line install or use described sensor before response be calibrated under mode of operation when the One-Dimension Magnetic variations of flux of described bipolar magnet device when described rotating shaft rotation 360 is spent.

Further, the change in angular position of the described rotating shaft of described two state signaling response is changed between described first signal state and described secondary signal state.

Further, described processing unit by monitoring and upgrade the minimum of the electronic signal meet described shaped form function line and width that peak-peak is regulated described binary condition signal with the variation of compensating operation condition, the variation of described operating conditions comprises changes of voids, variation of ambient temperature and the variation of the parameters of operating part that uses.

Further, described processing unit produces the width and skew variation with compensating operation condition of threshold value coefficient to regulate described two state signaling, and the variation of described operating conditions comprises the variation of the parameters of operating part that uses in changes of voids, variation of ambient temperature and described sensor.

In second aspect, the utility model provides a kind of sensor of the angular position range for the sensing rotating shaft, and this sensor comprises:

Indicating circuit, the rotation that is used for response bipolar magnet device produces the two state signaling with first signal state and secondary signal state, and described bipolar magnet device is attached in described rotating shaft, and is suitable for rotating together with described rotating shaft;

Memory storage is used for providing at least two reference voltage points, and described at least two reference voltage points have the first reference voltage point and the second reference voltage point, represent two electrical voltage points on a linear function line;

Sensing apparatus is used for the electric signal that response is sensed along the change in magnetic flux density generation of bidimensional when described rotating shaft is rotated when described bipolar magnet device; And

Comparison means is used for electric signal and described two the reference voltage points of sensing are compared;

Wherein, when the voltage of the electric signal that senses equates with described the first voltage reference points or described the second reference voltage point, described indicating circuit produces described first signal state, when the voltage of the electric signal that senses exceeds scope (or outside the scope between described the first reference voltage point and described the second reference voltage point) between described the first reference voltage point and described the second reference voltage point, described indicating circuit produces described secondary signal state.

Further, sensor further comprises: memory storage, be used for providing at least two pairs of reference voltage points, described at least two pairs of reference voltages point has first pair of reference voltage point and the second pair of reference voltage point and represents four electrical voltage points on the linear function line, wherein said first pair of reference voltage point is designated as has the first magnitude of voltage, and described second pair of reference voltage point is designated as and has the second voltage value; And comparison means, be used for the magnitude of voltage of the described electric signal that senses and described the first appointment and the magnitude of voltage of described the second appointment are compared; Wherein, when the magnitude of voltage of the magnitude of voltage of the voltage of the electric signal that senses and described the first appointment or described the second appointment equates, the voltage of perhaps working as the electric signal that senses is in scope between the magnitude of voltage of the magnitude of voltage of described the first appointment and described the second appointment the time, and described indicating circuit produces the first signal state; Wherein, during less than the magnitude of voltage of described the first appointment or greater than the magnitude of voltage of described the second appointment, described indicating circuit produces the secondary signal state when the voltage of the electric signal that senses.

Further, described processing unit produces the K scale-up factor with the width of regulating described two state signaling and the variation that is offset with the parameters of operating part that is used in the variation, variation of ambient temperature and the described sensor that compensate the space.In the third aspect, the utility model provides a kind of sensor of the angular position range for the sensing rotating shaft, and this sensor comprises:

Threshold circuit is used for the threshold voltage on offer curves shape function line; And

Sensing device is used for the electric signal that response senses along the magnetic flux change generation of one dimension when described rotating shaft is rotated when described bipolar magnet device;

Wherein, when the voltage of the electric signal that senses higher than (or lower than) or when equaling described threshold voltage, described indicating circuit produces the first signal state, and the voltage of working as the electric signal that senses is during lower than (or higher than) described threshold voltage, and described indicating circuit produces the secondary signal state.

By providing with upper sensor, the utility model has overcome top mentioned defective of the prior art.

Description of drawings

With reference to accompanying drawing, the embodiment of the present invention is described, wherein:

Fig. 1 has described according to position sensing 100 of the present invention, and the side view of the rotating shaft 108 in position sensing 100 is shown;

Fig. 2 has described the position sensing 100 of Fig. 1, and the vertical view of rotating shaft shown in Figure 1 108 is shown;

Fig. 3 has described position sensing 100, the rotating shaft 108 shown in Fig. 2 is shown along the sectional view of the line A-A in Fig. 2;

Fig. 4 A-B has described magnet arrangement 102 in Fig. 1-3 and the more detailed structure of sensing apparatus 104;

Fig. 5 A has described the more detailed construction of an embodiment of the processing circuitry 106 in position sensing 100;

Fig. 5 B has described the more detailed construction of another embodiment of the processing circuitry 106 in position sensing 100;

Fig. 6 has described the more detailed structure of the processing unit 504 shown in Fig. 5;

Fig. 7 A-C illustrates calibration (or simulation) program or the step of using two function lines, and response produces this two function lines along magnetic flux change and/or the changes of magnetic field of bidimensional;

Fig. 8 A-B illustrates calibration (or simulation) program or the step of using a function line, and response produces this function line along magnetic flux change and/or the changes of magnetic field of one dimension;

Fig. 9 A-B illustrates the slewing area of using positive two state signaling 107 or negative two state signaling 107 ' to show the rotating shaft 108 shown in Fig. 1-3; And

Figure 10 illustrates engine control system 900, and wherein the output 111 of the processing circuitry shown in Fig. 1-3 106 is used to control the engine in automobile.

Embodiment

Refer now to specific embodiment, its example shown in the drawings.In the detailed description of specific embodiment, directional terminology, such as " top ", " bottom ", " top ", " below ", " left side ", " the right " etc. used with reference to the described direction of accompanying drawing.Because the parts of the embodiment of the present invention can be configured to many different directions, directional terminology is used as the purpose of aid illustration and restriction anything but.As much as possible, the same or analogous mark that uses in institute's drawings attached and the same or analogous part of symbolic representation.

Fig. 1 describes according to position sensing 100 of the present utility model, and the side view of the rotating shaft 108 in position sensing 100 is shown.

In Fig. 1, position sensing 100 comprises magnet arrangement 102, sensing apparatus 104 and processing circuitry 106.Sensing apparatus 104 is electrically connected to processing circuitry 106 by connecting 109, and magnet arrangement 102 is installed in rotating shaft 108 and be suitable for around the shaft that 108 axle (or axle center) 112 (as shown in Figure 3) rotates together with rotating shaft 108.Sensing apparatus 104 is positioned at the top of magnet arrangement 102, mutual copline on the direction of Graph-Oriented 1, and separate a distance B (or space) 183 with magnet arrangement 102.When 108 axle 112 rotated around the shaft, magnet arrangement 102 can produce change in magnetic flux density to the position (or detecting location) at sensing apparatus 104 places, and then produces changes of magnetic field when magnet arrangement 102.When sensing apparatus 104 was subject to the affecting of change in magnetic flux density of magnet arrangement 102, sensing apparatus 104 can produce electric signal (for example PWM, SENT etc.).As exemplary embodiment, sensing apparatus 104 can comprise Hall effect circuit, is used for response and produces electric signal by the caused changes of magnetic field of change in magnetic flux density.Sensing apparatus 104 is transported to processing circuitry 106 with the electric signal of sensing, the processing circuitry 106 described electric signal of sensing of response, and then locate to produce two state signaling 110 at its output terminal (that is, connecting 111).

As shown in fig. 1, rotating shaft 108 can be moved as the crow flies along its vertical (or its length direction), and also can rotate around axle 112 (as shown in Figure 3).When rotating shaft 108 was vertically moved as the crow flies along it, processing circuitry 106 kept the output state of its two state signaling at its output terminal 111.In other words, for the rectilinear motion of rotating shaft 108, processing circuitry 106 does not change the output state of two state signaling in output 111, because sensing apparatus 104 can not detect any change in magnetic flux density and/or changes of magnetic field from the rectilinear motion of rotating shaft.Yet when its axle 112 rotated, processing circuitry 106 can be according to the rotational angle of rotating shaft 108 when rotating shaft 108, at its output terminal 111 places, in V _HighAnd V _LowBetween change the Voltage-output of two condition.In other words, the rotational angle of processing circuitry 106 response rotating shafts 108 is at V _HighAnd V _LowBetween its two condition of conversion output 111.Fig. 2 has described the position sensing 100 of Fig. 1, and the vertical view of rotating shaft 108 is shown.In the vertical view of rotating shaft 108, sensing apparatus 104 should be illustrated the top (partition distance 183D) that is positioned at magnet arrangement 102.For principle of the present invention is described better, sensing apparatus 104 schematically is arranged in rotating shaft 108 sides of Fig. 2, but makes with dashed lines 129 reflect above-mentioned actual positional relationship between magnet arrangement 102 and sensing apparatus 104.As shown in Figure 2, magnet arrangement 102 has along the length L in rotating shaft 108 vertical (or length direction) to guarantee that when rotating shaft 108 is vertically moved as the crow flies along it sensing apparatus 104 is all the time in the effective search coverage at magnet arrangement 102.Dotted line 114 expression along rotating shaft 108 vertically on center line, and dotted line 115 and 117 define the slewing area be concerned about (L1 ,+L1).In other words, when axle 112 turned left and turns right, vertically (or length direction) upper center line 114 rotated towards dotted line 115 and 117 respectively when rotating shaft 108.

Fig. 3 has described the position sensing apparatus 100 of Fig. 2, illustrates along the sectional view of the rotating shaft 108 of the line A-A in Fig. 2.

As shown in Figure 3, rotating shaft 108 can (be illustrated by the center line 113 on the diametric(al) in rotating shaft 108) from its center and bear left moving until rotating shaft 108 arrives its left-hand rotation arena limit-Lm (being illustrated by dotted line 121) or bears right moving until rotating shaft 108 arrives its right-hand rotation arena limit+Lm (being illustrated by dotted line 123).Center line 113 on diametric(al) passes through and cuts the axle (or axle center) 112 of rotating shaft 108.Therefore, two dotted lines 121 and 123 limit the whole rotation of rotating shafts 108 scope of activities (Lm ,+Lm).The scope of activities of whole rotation (Lm ,+Lm) in, two dotted lines 115 and 117 limit the rotation scope of activities of rotating shaft 108 inside, or be called slewing area (L1 ,+L1).In the specific embodiment shown in Fig. 3, the rotation scope of activities of the scope of activities of whole rotation and inside is about axle 112 and the symmetrical arrangement of the center line in rotating shaft 108 113 of rotating shaft 108.In other words, for the center line 113 on axle 112 and diametric(al) ,-Lm and-slewing area between L1 equals respectively+Lm and+slewing area between L1.Yet the rotation scope of activities of asymmetric setting is also possible for a person skilled in the art.In addition, with the whole rotation scope of activities of rotating shaft 108 (Lm ,+Lm) to expand 360 degree to be also possible.In order clearly to limit the position relationship between the parts in Fig. 1-3, should be noted that the center line 113 on rotating shaft 108 diametric(al)s is through the straight line of axle 112 and perpendicular to the center line 114 (referring to Fig. 2) on vertical along rotating shaft 108.

During collaborative work, the angle position of sensing apparatus 104 and the detectable rotating shaft 108 of processing circuitry 106 and generation two condition indicator signal 107 on output terminal 111.Specifically, when rotating shaft 108 slewing area (L1 ,+L1) in the time, processing circuitry 106 can produce first signal state (high-voltage state V as shown in Figure 3 _HighOr the low-voltage state V shown in Fig. 9 B _Low); When rotating shaft 108 slewing area (L1 ,+L1) outside when (or exceeding this slewing area), processing circuitry 106 produces secondary signal states (low-voltage state V as shown in Figure 3 _LowOr the high-voltage state V shown in Fig. 9 B _High).Then, two condition indicator signal 107 is transported to ECU (control unit of engine) by the output 111 (as shown in figure 10) of processing circuitry 106.

Fig. 4 A has described an embodiment of the magnet arrangement 102 shown in Fig. 1-3 and sensing apparatus 104.As shown in Fig. 4 A, magnet arrangement 102 comprises the magnet 304A with the South Pole and arctic, and the South Pole of magnet 304A is attached on the surface of rotating shaft 108, and the surface of the front surface 305 of sensing apparatus 104 and magnet 304A arctic is set to mutually face.Align with the axle 112 of rotating shaft 108 and the center line 113 on rotating shaft 108 diametric(al)s in the South Pole of magnet 304A and the arctic.Sensing apparatus 104 and magnet 304A separate distance (or space) 183D and with magnet 304A copline.As shown in Figure 2, magnet 304A has length L and along the center line 114 in rotating shaft 108 vertically.In order more effectively to survey the magnetic flux change from magnet 304A, as an embodiment, the sensing points of sensing apparatus 104 is alignd with center line 114 with the copline of magnet 304A.

Sensing apparatus 104 comprises sensing element 302, and this sensing element can be hall effect sensor or magnetic resistance (magneto-resistive) sensor, can produce electric signal when being exposed to rotation (or variation) magnetic field.More specifically, Hall effect sensing element 302 can be the semiconductor film (current-carrying semi-conductor membrane) of current-carrying, can produce the voltage perpendicular to direction of current when the change in magnetic flux density/changes of magnetic field that is subject to perpendicular to the film surface.As shown in Fig. 4 A, magnetic flux density/magnetic field is 183 interior along three-dimensional coordinate 303 (B in the space _x, B _y, B _z) change.Sensing apparatus 104 is usually designed to be surveyed along B _xOr B _yIn one dimension or the changes of magnetic field of bidimensional.Sensing element 302 can be configured to be located at the detecting location that change in magnetic flux density/changes of magnetic field is responsive with sensitive to being caused by the magnet 304A that rotates.In Fig. 4 A, B represents magnetic flux density; B _xExpression upward and perpendicular to the magnetic flux density of sensing element 302 is measured to direction (the radial direction) along the diameter of axle 108; And B _yExpression is measured with axle 108 tangent (tangential to) and with the coplanar magnetic flux density of sensing element 302.

Fig. 4 B describes an embodiment of magnet arrangement 102 in detail.In Fig. 4 B, magnet arrangement 102 is identical with magnet arrangement and the sensing apparatus shown in Fig. 4 A with sensing apparatus 104, except the direction of the magnet 304A in the polar orientation of magnet 304B and Fig. 4 A is different.As shown in Fig. 4 B, magnet arrangement 102 comprises the magnet 304B with north and south poles, and the arctic of magnet 304B is attached on the surface of rotating shaft 108, and the surface in the surface 305 of sensing apparatus 104 and the South Pole of magnet 304B is set to mutually face.The north and south poles of magnet 304B aligns with the axle 112 of rotating shaft 108 and the center line in rotating shaft 108.According to identical with the described principle of Fig. 4 A, magnetic field in the space along three dimension 303 (B _x, B _y, B _z) change.Sensing apparatus 104 is designed to survey along B _xOr B _yIn one dimension or the changes of magnetic field of bidimensional.

Fig. 5 A describes an embodiment of the processing circuitry 106 in position sensing 100 in detail.As shown in Fig. 5 A, processing circuitry 106 comprises analog/digital conversion circuit 502, processing unit (or digital processing element) 504 and indicating circuit (or two condition indicating circuit) 508, and all these circuits all are electrically connected by connecting 503,505 and 507.Analog/digital conversion circuit 502 is electrically connected to sensing apparatus 104 by connecting 109, this analog/digital conversion circuit 502 receives analog electronic signal as input, with this analog electronic signal processing (or turning) one-tenth digital electronic signal from sensing apparatus 104, and digitized electronic signal is transported to processing unit 504 by connecting 503.Then, thus processing unit 504 process digitized electronic signals determine rotating shaft 108 whether slewing area (L1 ,+L1) in.Based on determining of processing unit 504, when rotating shaft 108 slewing area (L1 ,+L1) in the time, processing unit 504 is arranged to first signal state (the high-voltage state V that goes out as shown in Figure 3 with the two condition output 111 of indicating circuit 508 _HighOr the low-voltage state V shown in Fig. 9 B _Low); When rotating shaft 108 slewing area (L1 ,+L1) outside when (or exceeding this slewing area), processing unit 504 is arranged to secondary signal state (the low-voltage state V that goes out as shown in Figure 3 with the two condition output 111 of indicating circuit 508 _LowOr the high-voltage state V shown in Fig. 9 B _High).

More specifically, the two condition of indicating circuit 508 output 111 can arrange according to connecting two control signals that occur on 505 and 507; Namely, according to the state control signal (have the first control signal state and be connected the control signal state) and the trigger pip (or trigger pulse) that is connected on 507 that connect on 505, indicating circuit 508 is arranged on high-voltage state (V _High) or low-voltage state (V _Low).When digital processing element 504, trigger pulse is transported to connect on 507 and state control signal is transported to and connects on 505, indicating circuit 508 is configured to the voltage status identical with appearing at the state control signal that connects on 505.When trigger pip was not transported in connection 507, indicating circuit 508 kept its current output states, and is not appeared at the impact that connects state control signal on 505.As an embodiment, the logic function of indicating circuit 508 can be by realizing with J-K register or D register.

Therefore, when processing unit 504 determines that rotating shaft 108 is at slewing area (L1, + L1) time, processing unit 504 is transported to the first control signal state (high state of a control signal or low state of a control signal) to connect on 505 and trigger pip is transported to and connects on 507, and this is arranged to first signal state (the high-voltage state V that goes out as shown in Figure 3 with indicating circuit 508 _HighOr the low-voltage state V shown in Fig. 9 B _Low).When processing unit 504 determines that rotating shaft 108 is at slewing area (L1, + L1) outside when (or exceeding this slewing area), processing unit 504 is transported to the second control signal state (low state of a control signal or high state of a control signal) connection 505 and trigger pip is transported to and connects on 507, and this is arranged to secondary signal state (the low-voltage state V that goes out as shown in Figure 3 with indicating circuit 508 _LowOr the high-voltage state V shown in Fig. 9 B _High).

Fig. 5 B describes another embodiment of the processing circuitry 106 in position sensing 100 in detail.As shown in Fig. 5 B, processing circuitry 106 ' comprises treating apparatus (or analog processing device) 924 and polarity circuit 928.Analog processing device 924 has input and output, its input with is connected 109 and is connected, reception and treatment of simulated electronic signal; And its output is connected with polarity circuit 928 by connecting 925.This polarity circuit 928 has output terminal, and is connected 111 and is connected.

Treating apparatus 924 receives electronic signals and processes this electronic signal from sensing apparatus 104, thus when rotating shaft 108 slewing area (L1 ,+L1) in the time, produce the first state trigger pip; And when rotating shaft 108 slewing area (L1 ,+L1) outside when (exceeding this slewing area), produce the second state trigger pip.Respond the first state control signal, polarity circuit 928 is configured to the first status signal (high-voltage state V that goes out as shown in Figure 3 _HighOr the low-voltage state V shown in Fig. 9 B _Low); Respond the second state control signal, polarity circuit 928 is configured to the second status signal (low-voltage state V that goes out as shown in Figure 3 _LowOr the high-voltage state V shown in Fig. 9 B _High).Treating apparatus 924 comprises the threshold values circuit, is used for arranging threshold voltage.

More specifically, use the calibration relevant to the description of Fig. 8 A-B (or simulation) program to obtain threshold voltage.Then, the threshold voltage that has obtained through calibration (or having simulated) is arranged in analog processing device 924.The voltage of sensing when sensing apparatus 104 is arranged to the first status signal (high-voltage state V that goes out as shown in Figure 3 thereby simulation process circuit 925 produces the first state control signals with polarity circuit 928 during more than or equal to threshold voltage _HighOr the low-voltage state V shown in Fig. 9 B _Low).The voltage of sensing when sensing apparatus 104 is arranged to the second status signal (low-voltage state V that goes out as shown in Figure 3 thereby simulation process circuit 925 produces the second state control signals with polarity circuit 928 during less than threshold voltage _LowOr the high-voltage state V shown in Fig. 9 B _High).

Analog processing device 924 can be realized with low-pass filter or other similar analogue means.

Fig. 6 has described the more detailed structure of processing unit 504 shown in Fig. 5.As shown in Figure 6, processing unit 504 comprises processor (or CPU) 602, register 604, memory storage 606, I/O circuit 608 and bus 610.Processor 602, register 604, memory storage 606 and I/O circuit are connected respectively and are connected with bus 610 with 609 by connecting 603,605,607.Memory storage 606 program storages (namely, one instruction sequence), parameter (for example, reference voltage shown in Fig. 7 B and 8A) and data (comprising digitized electronic signal), register 604 can be stored (or buffer-stored) parameter and data, and I/O circuit 608 can receive to the input signal of processing unit 504, and the signal in processing unit 504 can be sent out processing unit 504 (as sending to

connection

505 and 507).Register 604 can provide and the holding signal state for one or more CPU operating cycle based on the content that is kept in this register, so that processor 602 can be in CPU executable operations in the operating cycle.

Be stored in program in memory storage 606 by execution, processor (or CPU) but the operation of 602 control registers 604, memory storage 606 and I/O circuit 608, and can be to carrying out read/write operation on register 604 and memory storage 606.I/O circuit 608 can receive input signal and output signal is sent to indicating circuit 508 from analog/digital conversion circuit 502.In order to carry out the Compare Logic computing, processor (or CPU) 602 comprises the arithmetic logic unit (not shown) with comparer 612, arithmetic logic unit has comparer 612, and this comparer can be carried out the compare operation in input 613 and 615 these two sources to produce comparative result in output on 617.Processor (or CPU) 602 can be determined subsequent operation based on the comparative result in output 617.More specifically, based on this comparative result, processor (or CPU) 602 can produce desired state control signal and be connected or trigger pulse with trigger pip) and they are sent in

connection

505 and 507.

Fig. 7 A has described in calibration (or simulation) program, the output that meets two function lines (740,706) that produces along the change in magnetic flux density of Bx and By dimension and/or changes of magnetic field in sensing apparatus 104 response spaces 183.Specifically, when magnet arrangement 102 108 axle (or axle center), 112 lasting rotation around the shaft, 104 pairs of sensing apparatus produce response along change in magnetic flux density and/or the changes of magnetic field of Bx and By dimension respectively by what magnet arrangement 102 produced, and according to change in magnetic flux density and/or the changes of magnetic field along Bx and By dimension, produce the electric signal (or output voltage) that meets cosine-shaped function line 704 and the bent function line 706 of sinusoidal.When axle 112 continued to rotate, if the output of sensing apparatus 104 (connecting 109 places) is transported to oscillograph, so, these two function lines 704 and 706 can be observed from oscillograph when magnet arrangement 102.In coordinate system as shown in Figure 7A, the X coordinate represents the variation of the rotation angle of rotating shaft 108, and the Y coordinate represents the change in voltage on cosine-shaped function line 704 and sinusoidal function line 706.As an embodiment, sensing apparatus 104 can be by realizing with the obtainable 3D hall sensing of business device, but only use its processing power on bidimensional (that is, X and Y dimension).On this use market, ready-made circuit way has been saved the circuit design cost and has reduced the circuit design time.

Fig. 7 B has described the Voltage-output that meets linear function 722 that produces in calibration (or simulation) program, this calibration (or simulation) program is being installed or carrying out before use location sensing system 100 on the spot.When carrying out calibration (or simulation) program, treating apparatus (as the processing circuitry 106 that comprises processing unit 504) is processed two groups of analog electronic signals that meet cosine-shaped function line 704 and sinusoidal function line 706 (as shown in Fig. 7 A) and is met the Voltage-output of linear function line 722 with generation.Should be understood that the change in voltage shown in Fig. 7 B is and change in magnetic flux density B along X and Y dimension _xAnd B _yProportional output/electronic signal.In the coordinate system of the linear function line 722 as shown in Fig. 7 B, the X coordinate represents the variation of the rotation angle in rotating shaft 108, the change in voltage on Y coordinates table timberline function line 722.

Particularly, in processing circuitry 106, analog/digital conversion circuit 502 receives two groups of analog electronic signals (meeting cosine-shaped function line 704 and sinusoidal function line 706) from sensing apparatus 104, convert them to two groups of digital electronic signals, and these two groups of digitized electronic signals are transported to processing unit 504 (by the I/O circuit 608 in processing unit 504).After receiving two groups of digitized electronic signals, processor in processing unit 504 (CPU) 602 is stored into them in memory storage 606, then these two groups of digitized electronic signals is converted to one group of electronic signal of the linear function line 722 that meets as shown in Fig. 7 B.Processor in processing unit 504 (CPU) 602 is by using following mathematical formula that these two groups of digitized electronic signals are changed:

(1) output voltage. ₁(V. ₁The function of)=angle=m x (angle)+b=m x θ+b

(2)tan(θ)＝sin(θ)/cos(θ)＝B _x/B _y

(3)θ＝arctan(θ)＝arc(sin(θ)/cos(θ))＝arc(B _x/B _y)

(4) output voltage. ₁(V. ₁)=m x arc ((sin (θ)/cos (θ))+b=m x arc (B _x/ B _y)+b

(5) output voltage. ₂(V. ₂)=m x arc (k x (sin (θ)/cos (θ))+b=m x arc (k x (B _x/ B _y))+b

In the step that above-mentioned five mathematical formulaes reflect, m, b and k are the constants of the linear function of three calibration/simulations, and wherein m represents the slope of linear function, and b limits the starting point of the output relevant with measured angle; And for the linearity that makes function line 722 accurately is reflected in the angular position range of operating conditions when changing, k regulates/constant of penalty function line 722; Sin (θ) and cos (θ) be the

function line

706 and 704 shown in presentation graphs 7A respectively; Equation (4) expression is by the Voltage-output shown in the function line 722 in Fig. 7 B; And the Voltage-output that equation (5) expression uses constant k to regulate/compensate.When k=1, formula (4) equals formula (5).The variation of operation response condition, by different constant k is set, two reference voltages on function line 722 are conditioned/compensate so that the width of two state signaling and skew (or position skew) can be conditioned/compensate.

In order to convert linear function output to two-state output, in calibration (or simulation) program, processor (CPU) 602 is confirmed two reference voltage points (or two reference voltages) V on the Voltage-output of linear function line 722 _f1And V _f2Particularly, as shown in Fig. 7 B, two reference voltage V _f1And V _f2Confirmation (L1) He 117 (+L1) two angular position of rotation are relevant with respective dashed 115 respectively.In order to keep output voltage symmetrical at

dotted line

115 and 117 corresponding with dotted line 113 central rotation angles, at first processor (CPU) 602 can confirm the center reference voltage V relevant with the dashed centre line 113 in rotating shaft 108 _cThen, processor (CPU) 602 is according to center reference voltage V _cConfirmation is about center reference voltage V _cSymmetrically arranged two reference voltage V _f1And V _f2

Fig. 7 C has described to form based on the linear function line 722 in calibration (or simulation) program has first signal state (high voltage V _High) and secondary signal state (low-voltage V _Low) the scheme of two state signaling 107.As shown in Fig. 7 C, by equaling or all electrical voltage points (or voltage) on the linear function line 722 between two reference voltage points (or voltage) coupling (or appointment) is the first two state signaling (high voltage V _High),

And by will be less than the first reference voltage V _f1Or greater than the second reference voltage V _f2 Linear function line 722 on all electrical voltage points coupling (or appointment) be the second two state signaling (low-voltage V _LowThereby) formation two state signaling 107.When the output of calibration (or simulation) was sent to oscillograph, the electronic signal as shown in Fig. 7 B-C can also be observed from oscillograph.

As another embodiment, in calibration (or simulation) program, two pairs of electrical voltage points that processor 602 is confirmed on linear function lines 722, every a pair of electrical voltage point flock together (for example spaced apart 0.2 degree).Then, processor 602 is with the first reference voltage V _f1Specifying (or coupling) is first pair of electrical voltage point and with the second reference voltage V _f2Specifying (or coupling) is second pair of electrical voltage point.Such scheme has advantages of and can realize specific embodiment with existing 3D Hall device existing capability, thereby provides cost savings and shortened design time.

In Fig. 7 A-C, for the variation of the operating conditions of tackling (or offset) position sensing 100 (comprises the variation in space, the variation of environment temperature, and the variation of the parameters of operating part that uses), the width of two state signaling 107 and skew (or position skew) can compensate by linear adjustment function line 722, and this causes center reference voltage V _cWith two reference voltage V _f1And V _f2Adjusting/compensation.Herein, the skew of two state signaling 107 refers to the relative position of the two state signaling 107 relevant to the angle of rotation of rotating shaft 108.

Produce these two reference voltage V in calibration (or simulation) program _f1And V _f2Afterwards, they are stored in memory device 606, so that processor 602 in the later use on the spot of position sensing 100, is surveyed the slewing area of rotating shaft 108 with these two reference voltages.

Should be noted in the discussion above that by using the step that equation (1)-(5) are reflected, function curve 704 and two outputs of 706 are converted into 722 1 outputs of linear function line as shown in Fig. 7 B as shown in Figure 7A.Should be understood that, the output of a linear function 722 of use converts angular range to two state signaling and is not subject to, or less being subject to the impact of the change in magnetic flux density that produced by changes of voids, temperature effect or magnet fault, this makes the degree of accuracy of detection improve.Should further be understood that, the symmetry that two state signaling 107 is relevant to center line 113 can also use the scheme shown in Fig. 7 A-7C to regulate and keep in ground easily and effectively.

Fig. 8 A has described in calibration (or simulation) program, uses the function line (704 or 706) shown in Fig. 7 A to produce threshold reference voltage 712 (or 714).Particularly, when magnet arrangement 102 when 108 axle 112 continues to rotate around the shaft, sensing apparatus 104 responses by magnet arrangement 102 produce along B _yThe change in magnetic flux density of dimension/changes of magnetic field produces the electric signal that meets sinusoidal line 706.

When carrying out calibration (or simulation) program, treating apparatus (for example processing circuitry 106) processing meets the analog electronic signal of sinusoidal line 706 (shown in Fig. 7 A) to produce threshold voltage 712.Specifically, in processing circuitry 106 inside, analog/digital conversion circuit 502 receives analog electronic signal (meeting sinusoidal line 706) from sensing apparatus 104, convert them to digital electronic signal, and digitized electronic signal is transported to I/O circuit 608 in processing unit 504.After receiving digitized electronic signal, processor in processing unit 504 (CPU) 602 is stored into memory storage 606 with them, and uses subsequently following mathematical formulae (7) to convert digitized electronic signal to threshold voltage 712 (or 714):

(6) threshold voltage 712=(voltage max 715-voltage minimum 716) x (percent value)

In the present invention, percent value elects 70% as.

Fig. 8 B has described the sinusoidal line 706 that produces based in calibration (or simulation) program, has first signal state (high voltage V with formation _High) and secondary signal state (low-voltage V _Low) the scheme of two state signaling 107.Based on mathematical formulae (6), the digital processing circuit 106 shown in Fig. 5 A (or the simulation process circuit 106 ' shown in Fig. 5 B) is first signal state (high voltage V by the coupling of all electrical voltage points (or voltage) on the positive half period of sinusoidal line 706 that will be equal to or greater than threshold voltage 712 (or appointment) _High) and be secondary signal state (low-voltage V by mating (or appointment) less than all electrical voltage points (or voltage) on the positive half period of sinusoidal line 706 of threshold voltage 712 _Low), thereby produce two state signaling 107.When output was sent to oscillograph, the electronic signal shown in Fig. 8 A-B can be observed from oscillograph when calibration (or simulation).

Although calibration (simulation) program relevant to Fig. 8 A-B used the electric signal of sensing on the positive half period of sinusoidal line 706, should be noted in the discussion above that principle of the present invention also can be applied to the electric signal of sensing on the negative half-cycle of sinusoidal line 706.When using the negative half-cycle of sinusoidal line 706, threshold voltage 712 should use following mathematical formulae (7):

(7) threshold voltage 714=(voltage max 718-voltage minimum 720) x (percent value)

Based on mathematical formulae (7), the digital processing circuit 106 shown in Fig. 5 A (or the simulation process circuit 106 ' shown in Fig. 5 B) is first signal state (high voltage V by the coupling of all electrical voltage points (or voltage) on sinusoidal line 706 negative half-cycles that will be equal to or less than threshold voltage 714 (or appointment) _High) and will be secondary signal state (low-voltage V greater than the coupling of all electrical voltage points (or voltage) on sinusoidal line 704 negative half-cycles of threshold voltage 714 (or appointment) _LowThereby) generation binary condition signal 107.

In Fig. 8 A-B, for the variation of the operating conditions of tackling (or offset) position sensing 10 (comprises the variation in space, the variation of environment temperature, and the variation of the parameters of operating part that uses), the width of two state signaling 107 can compensate by the value of adjusting threshold voltage 412.According to an embodiment, during the threshold voltage 712 (or 714) that produces in calibration (or simulation) program is stored into memory storage 606 so that processing unit 602 uses threshold voltage 712 (or 714) to survey the slewing area of rotating shaft 108 can use afterwards the time on the spot.According to another embodiment, the threshold voltage 712 (or 714) that produces in calibration (or simulation) program be set up into analog processing device 924 in case analog processing device 924 can be afterwards on the spot with the time survey the angle of rotation of rotating shaft 108 with it.

Although in Fig. 8 A-B, two state signaling based on threshold value only can not provide adjusting/compensation to skew to the energy width, but its uses than the more simple circuit structure of Hall device (being the multidimensional Hall device) (as 1 dimension speed Hall device) based on linear function.

Should be noted that Fig. 8 A-B illustrates calibration (or simulation) program by the output with sinusoidal line 706.The principle relevant to Fig. 8 A-B can also be applied to the output (as shown in Figure 7A) of cosine-shaped line 704, because, compare with periodic sinusoidal line 706, if cosine-shaped line 704 moves 90 degree, periodic cosine-shaped line 704 will be consistent with periodic sinusoidal line 706.So same principle is the output of applicable cosine-shaped line 704 also.In the present invention, by carry out calibration (or simulation) program with processing circuitry 106.Yet for those skilled in the art, any similar treating apparatus can be used to carry out calibration (or simulation) program.

Should be noted in the discussion above that the Electronic Non-contact sensing apparatus inevitably will run into the variation of the operating conditions in manufacturing and/or running, include but not limited to, the parameter of the variation in space, variation of ambient temperature and the parts that use changes.In order to improve and improve the accuracy of measuring, especially for the neutral gear position scope of the gear shaft on probe vehicle, it is critical having adjusting/compensation ability.And represent that with two state signaling angular position range is the basis of regulating/compensate (comprising width and/or skew).For the ease of the maintenance of position sensing 100, when using on the spot, can carry out calibration (or simulation) step by calibration (or simulation) program that execution is stored in processing circuitry 106.When using on the spot, can also come the reference voltage in set handling circuit 106 to carry out adjusting/compensation two state signaling by reprogramming.

Fig. 9 A-B illustrated positive two state signaling 107 or negative two state signaling 107 ' all can be used to represent rotating shaft 108 slewing area (L1 ,+L1).

Particularly, as shown in Fig. 9 A, when rotating shaft 108 slewing area (L1 ,+L1) in the time, processing circuitry 106 (or processing circuitry 106 ') is arranged on the high-voltage state V as shown in line 907 with indicating circuit 508 (or polarization circuit 928) _HighWhen rotating shaft 108 exceeds slewing area (L1, + L1) when (or outside slewing area), digital processing circuit 106 (or processing circuitry 106 ') is arranged on the low-voltage state V as shown in line 909 with indicating circuit 508 (or polarization circuit 928) _Low

Perhaps, as shown in Fig. 9 B, two state signaling 107 ' can be the two state signaling 107 of reversing.Therefore, in Fig. 9 B, when rotating shaft 108 slewing area (L1 ,+L1) in the time, processing circuitry 106 (or processing circuitry 106 ') is arranged on low-voltage state V as shown in line 917 with indicating circuit 508 (or processing circuitry 106 ') _LowWhen rotating shaft 108 exceed slewing area (L1 ,+L1) when (or outside slewing area), processing unit 504 is arranged on high-voltage state V as shown in line 919 with indicating circuit 508 _High

Figure 10 has described engine control system 900, wherein the two condition of processing circuitry 106 (or processing circuitry 106 ') output 111 engines that are used to control in automobile.In Figure 10, engine control system 900 comprises sensing apparatus 104, processing circuitry 106 and ECU (control unit of engine) 902.In engine control system 900, rotating shaft 108 is used as shift lever, and slewing area (L1 ,+L1) reflection shift lever the neutral gear position scope.

As shown in Figure 10, ECU (control unit of engine) 902 receives from processing circuitry 106 (or processing circuitry 106 ') two state signaling that connects on 111 and inputs as it, and receives input 903 from the clutch coupling sensing circuit (not shown) of automobile.Whether the clutch coupling of input 903 indication automobiles is jammed on.When ECU902 (for example 5 seconds) when connecting two state signaling on 111 and detect shift lever and rest on the neutral gear position scope one time period was arranged, the engine of its closing automobile is to save gasoline.When ECU902 is just jammed on based on the clutch coupling that connects input on 903 and detect automobile, ECU902 visits to judge and surveys shift lever whether in the neutral gear position scope based on connecting two state signaling on 111.ECU902 is starting engine when shift lever is in the neutral gear position scope only.Therefore, the detection accuracy of the neutral gear position scope of shift lever is very important concerning the reasonable operation that guarantees automobile.

Should be understood that, when position sensing 107 was used to the neutral gear position scope of the shift lever in probe vehicle, binary condition signal 107 narrower and/or symmetry was especially desirable.

When using on the spot, the rotation of the digital processing circuit 106 as shown in Fig. 5 A (or the simulation process circuit 106 ' as shown in Fig. 5 B) response rotating shaft 108, use following steps that indicating circuit 508 (or polarization circuit 928) is arranged to first signal state and secondary signal state:

When using on the spot, according to an embodiment, when an angle was rotated in rotating shaft 108, sensing device 104 responses produced electronic signal by change in magnetic flux density and/or the changes of magnetic field along X dimension and/or Y dimension that magnet arrangement 102 produces.The voltage conforms Fig. 7 A-C that senses or the description of Fig. 8 A-B.

For using the described program of Fig. 7 A-C (or method) to obtain the output of sensing, sensing device 104 produces respectively two electric signal that meet cosine-shaped line 704 and sinusoidal line 706.In case receive this two electric signal, processor (CPU) 602 converts them to a voltage of sensing by the equation (1-5) that uses Fig. 7 A-C.Therefore, the voltage of sensing should meet the linear function line 722 shown in Fig. 7 B.For the output that the program acquisition of using Fig. 8 A-B is sensed, sensing device 104 produces an electric signal that meets cosine-shaped line 704 or sinusoidal line 706, and this electric signal is sent to processor (CPU) 602.Therefore, the voltage of sensing should meet the cosine-shaped line 704 shown in Fig. 7 A or sinusoidal curve 706.

When the voltage that uses the described program of Fig. 7 A-C (or method) to obtain to sense, processor (CPU) 602 is with voltage and two reference voltage V of sensing _f1And V _f2Compare.Relatively the time, if the magnitude of voltage of sensing equals two reference voltage V _f1And V _f2In value one is perhaps at two reference voltage V _f1And V _f2Between value, processor (CPU) 602 produces respectively corresponding state control signal and trigger pip indicating circuit 508 is arranged to first signal state (the high-voltage state V that goes out as shown in Figure 3 connecting on 505 and 507 _HighOr the low-voltage state V shown in Fig. 9 B _Low).If the magnitude of voltage of sensing is less than the first reference voltage V _f1Or greater than the second reference voltage V _f2, processor (CPU) 602 produces respectively corresponding state control signal and trigger pip indicating circuit 508 is arranged to secondary signal state (the low-voltage state V that goes out as shown in Figure 3 in

connection

505 and 507 _LowOr the high-voltage state V shown in 9B in figure _High).

When the voltage that uses the described program of Fig. 8 A-B (or method) to obtain to sense, processor (CPU) 602 compares voltage and the threshold voltage 712 (or 714) of sensing.If the magnitude of voltage of sensing is equal to or greater than threshold voltage 712 (or the magnitude of voltage of sensing is equal to or less than threshold voltage 714), processor (CPU) 602 produces respectively corresponding state control signal and trigger pip indicating circuit 508 is arranged to first signal state (the high-voltage state V that goes out as shown in Figure 3 in

connection

505 and 507 _HighOr the low-voltage state V shown in Fig. 9 B _Low).If the magnitude of voltage of sensing is less than threshold voltage 712 (or the magnitude of voltage of sensing is greater than threshold voltage 714), processor (CPU) 603 produces respectively corresponding state control signal and trigger pip indicating circuit 508 is arranged to secondary signal state (the low-voltage state V that goes out as shown in Figure 3 in

connection

505 and 507 _LowOr the high-voltage state V shown in Fig. 9 B _High).

In comparison procedure, under the control of processor (CPU) 602, two reference voltage V _f1And V _f2Or in two

threshold voltages

712 and 714 registers 604 that are stored in processing unit 504.The voltage of sensing is transported to the input 613 of comparer 612, and two reference voltage V _f1And V _f2, or an input 615 that is transported to comparer 612 in two threshold voltages 712 and 714.Processor (CPU) 602 obtains the comparative result by output 617 generations of comparer 612.Based on the comparative result from output 617, processor (CPU) 602 is connecting generation state control signal and trigger pip on 505 and 506.

The program (or instruction set) of carrying out for the step that indicating circuit 508 is set can be stored in memory storage 606, and can be carried out by processor (CPU) 60.

When using on the spot, according to another embodiment, when rotating shaft 108 turn one angle, sensing apparatus 104 responses produce electronic signal by change in magnetic flux density and/or the changes of magnetic field along one dimension (X dimension and/or Y dimension) that magnet arrangement 102 produces.The electronic signal of sensing meets the description of Fig. 8 A-B.

The voltage of the electric signal of sensing when sensing apparatus 104 is more than or equal to threshold voltage, and analog processing device 924 produces the first state control signals and is arranged to the first status signal (high-voltage state V that goes out as shown in Figure 3 with the circuit 928 that will polarize _HighOr the low-voltage state V shown in Fig. 9 B _Low).The electric signal of sensing when sensing apparatus 104 is during less than threshold voltage, and analog processing device 925 produces the second state control signals the polarity circuit is arranged to the second status signal (low-voltage state V that goes out as shown in Figure 3 _LowOr the high-voltage state V shown in Fig. 9 B _High).

In order to reduce the cost of ECU system, expectation be the structure of simplifying the control module of this system.An item (or condition) that reaches this expectation is to convert the input of processing circuitry 106 or sensing apparatus 104 input of to two condition logic at this control module place.This conversion can realize by the sensor with mechanical switch, and shortcoming is the low and poor reliability of measuring accuracy.The utility model provides structure by utilizing two-dimentional Hall technology (based on linearity) or speed pickup (based on threshold value) technology can realize the two condition logic input signal, has improved design feasibility and measuring accuracy and reliability.

Can carry out various changes and modification and not break away from spirit and scope of the present utility model embodiment described herein for a person skilled in the art, this be obvious.Therefore, this instructions intention covers various changes and modification, if such change and modification are in the scope of the claim of enclosing and its equivalent.

Claims

1. sensor that is used for the angular position range of sensing rotating shaft (108) comprises:

Indicating circuit (508), the rotation that is used for response bipolar magnet device (102) produces the two state signaling with first signal state and secondary signal state, described bipolar magnet device (102) is attached in described rotating shaft (108), and is suitable for rotating together with described rotating shaft; And

Processing unit (504) is used for regulating described two state signaling to compensate the variation of described sensor operating conditions;

2. sensor according to claim 1, described sensor further comprises:

Memory storage (606) is used for providing at least two reference voltage points, and described at least two reference voltage points have the first reference voltage point and the second reference voltage point, represent two electrical voltage points on a linear function line (722);

Sensing apparatus (104) is used for the electric signal that response is sensed along the change in magnetic flux density generation of bidimensional when described rotating shaft (108) is rotated when described bipolar magnet device (102); And

Comparison means (602) is used for electric signal and described two the reference voltage points of sensing are compared;

Wherein, when the voltage of the electric signal that senses equated with described the first voltage reference points or described the second reference voltage point, described indicating circuit (508) produced described first signal state.

3. sensor according to claim 1, described sensor further comprises:

Between described the first reference voltage point and described the second reference voltage point in scope, described indicating circuit (508) produces described first signal state when the voltage of described electric signal.

4. sensor according to claim 1, described sensor further comprises:

When the voltage of the electric signal that senses exceeds scope between described the first reference voltage point and described the second reference voltage point, or outside the scope between described the first reference voltage point and described the second reference voltage point, described indicating circuit (508) produces described secondary signal state.

5. sensor according to claim 1 further comprises:

Memory storage (606), be used for providing at least two pairs of reference voltage points, described at least two pairs of reference voltages point has first pair of reference voltage point and the second pair of reference voltage point and represents four electrical voltage points on linear function line (722), wherein said first pair of reference voltage point is designated as has the first magnitude of voltage, and described second pair of reference voltage point is designated as and has the second voltage value;

Sensing apparatus (104) is used for response bipolar magnet device (102) change in magnetic flux density along bidimensional when described rotating shaft (108) is rotated and produces the electric signal that senses; And

Comparison means (602) is used for the magnitude of voltage of the described electric signal that senses and described the first appointment and the magnitude of voltage of described the second appointment are compared;

Wherein, when the magnitude of voltage of the magnitude of voltage of the voltage of the electric signal that senses and described the first appointment or described the second appointment equates, the voltage of perhaps working as the electric signal that senses is in scope between the magnitude of voltage of the magnitude of voltage of described the first appointment and described the second appointment the time, and described indicating circuit (508) produces the first signal state;

Wherein, during less than the magnitude of voltage of described the first appointment or greater than the magnitude of voltage of described the second appointment, described indicating circuit (508) produces the secondary signal state when the voltage of the electric signal that senses.

6. arbitrary described sensor according to claim 2-5, wherein:

Described sensing apparatus (104) is physically separated distance or a space with described bipolar magnet (304A, 304B).

7. sensor according to claim 6, wherein:

Described linear function line (722) install or use described sensor before response rotate 360 change in magnetic flux density along bidimensional when spending when described bipolar magnet (304A, 304B) around described rotating shaft and be calibrated under mode of operation/simulate.

8. sensor according to claim 6, wherein:

The variation of the angle position of the described two state signaling described rotating shaft of response (108) is changed between described first signal state and described the second status signal.

9. sensor according to claim 6, wherein:

The described angular position range of described rotating shaft is the neutral gear position scope on shift lever.

10. sensor according to claim 6, wherein:

Described processing unit (504) is regulated the width of described two state signaling or skew with the variation of the operating conditions that compensates described sensor, and the variation of described operating conditions comprises the variation of the parameters of operating part that uses in the variation in space, variation of ambient temperature and described sensor.

11. sensor according to claim 10, wherein:

Described processing unit (504) produces the K scale-up factor with the width of regulating described two state signaling and the variation that is offset with the parameters of operating part that is used in the variation, variation of ambient temperature and the described sensor that compensate the space.

12. sensor according to claim 1 further comprises:

Threshold circuit (924) is used for the threshold voltage on offer curves shape function line (704,706); And

Sensing device (104) is worked as described bipolar magnet (304A, 304B) magnetic flux change along one dimension when described rotating shaft (108) is rotated for response and is produced the electric signal that senses;

Wherein, when the voltage of the electric signal that senses higher or lower than or when equaling described threshold voltage, described indicating circuit (508) produces the first signal state, and the voltage of working as the electric signal that senses is during below or above described threshold voltage, and described indicating circuit (508) produces the secondary signal state.

13. sensor according to claim 12, wherein:

Described sensing apparatus (104) physically separates distance or a space with described bipolar magnet.

14. sensor according to claim 12, wherein:

Described threshold voltage, described shaped form function line (704,706) install or use described sensor before response be calibrated under mode of operation when the One-Dimension Magnetic variations of flux of described bipolar magnet when described rotating shaft rotation 360 is spent.

15. sensor according to claim 12, wherein:

16. the described sensor of any one according to claim 12-15, wherein:

The change in angular position of the described two state signaling described rotating shaft of response (108) is changed between described first signal state and described secondary signal state.

17. sensor according to claim 16, wherein:

Described processing unit (504) meets described shaped form function line (704 by monitoring and renewal, the minimum of electronic signal 706) and peak-peak are regulated the width of described binary condition signal with the variation of compensating operation condition, and the variation of described operating conditions comprises changes of voids, variation of ambient temperature and the variation of the parameters of operating part that uses.

18. sensor according to claim 17, wherein:

Described processing unit (504) produces the width and skew variation with compensating operation condition of threshold value coefficient to regulate described two state signaling, and the variation of described operating conditions comprises the variation of the parameters of operating part that uses in changes of voids, variation of ambient temperature and described sensor.

19. a sensor that is used for the angular position range of sensing rotating shaft (108) comprises:

Indicating circuit (508), the rotation that is used for response bipolar magnet device (102) produces the two state signaling with first signal state and secondary signal state, described bipolar magnet device (102) is attached in described rotating shaft (108), and is suitable for rotating together with described rotating shaft;

Wherein, when the voltage of the electric signal that senses equates with described the first voltage reference points or described the second reference voltage point, described indicating circuit (508) produces described first signal state, when the voltage of the electric signal that senses exceeds the scope between described the first reference voltage point and described the second reference voltage point or outside the scope between described the first reference voltage point and described the second reference voltage point, described indicating circuit (508) produces described secondary signal state.

20. sensor according to claim 19 further comprises:

And

21. the described sensor of any one according to claim 19-20, wherein:

Described sensing apparatus (102) is physically separated distance or a space with described bipolar magnet (304A, 304B).

22. sensor according to claim 21, wherein:

23. sensor according to claim 22, wherein:

24. sensor according to claim 23, wherein:

25. sensor according to claim 24, wherein:

26. sensor according to claim 25, wherein:

27. a sensor that is used for the angular position range of sensing rotating shaft (108) comprises:

28. sensor according to claim 27, wherein:

29. sensor according to claim 28, wherein:

30. sensor according to claim 29, wherein:

31. the described sensor of any one according to claim 27-30, wherein:

32. sensor according to claim 31, wherein:

33. sensor according to claim 32, wherein: