CN203744910U - Device for sensing angular position - Google Patents
Device for sensing angular position Download PDFInfo
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- CN203744910U CN203744910U CN201320607922.XU CN201320607922U CN203744910U CN 203744910 U CN203744910 U CN 203744910U CN 201320607922 U CN201320607922 U CN 201320607922U CN 203744910 U CN203744910 U CN 203744910U
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- rotating shaft
- sensing
- signal
- reverse gear
- sensing element
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Abstract
The utility model discloses a sensing device which is used for sensing the neutral gear and reverse gear of a rotating shaft. The rotating shaft can rotate or make linear movement. The rotating shaft is fixedly provided with a magnet and a ferromagnet along the axial direction. The device comprises a sensing element disposed above the rotating shaft. When the rotating shaft is located at the reverse gear or non-reverse gear, the sensing element generates a first type of inductive electric signal or a second type of inductive electric signal along with the rotation of the rotating shaft. The device also comprises a processing circuit which is corresponding to the first and second types of inductive electric signals. The processing circuit generates a first type of voltage signal or a second type of voltage signal. The device also comprises an indicating circuit which is corresponding to the first and second types of voltage signals. The indicating circuit generates position signals of a neutral gear and a reverse gear. The device provided by the utility model just employs one sensing element, and saves one sensing element, thereby reducing the cost and improving the reliability.
Description
Technical field
The utility model relates generally to position sensing apparatus, and relates more specifically to survey the neutral position of rotating shaft and the sensing apparatus of reverse gear position and method.
background technology
The angle position that use location sensing apparatus is surveyed rotating shaft is known in the industry.
Specifically, in order to save gasoline, rest on neutral position be equipped with (for example 5 seconds) after a period of time at gear shift lever of auto vehicles, control unit of engine (ECU) produces stop control signal, automatically the engine of closing automobile.Then, in the time that control unit of engine receives the signal that automobile clutch jammed on, if shift lever is still in neutral position, control unit of engine (ECU) will produce and start control signal, automatically start the engine of automobile.So the control circuit of automobile need to be surveyed with position sensing apparatus the neutral gear position of rotating shaft.
In addition, for driving safety, in the time that gear shift lever of auto vehicles enters reverse gear position, need to open backup lamp or start voice device, remind pedestrian around, this automobile is in reversing state.So the control circuit of automobile will need to survey with position sensing apparatus the reverse gear position of rotating shaft.
Traditionally, the detection of rotating shaft neutral position and reverse gear position reaches with two position sensing apparatus respectively.Owing to using two sensing apparatus, need with two cover magnet, two cover circuit component and mechanical organs, so manufacturing cost is high.And owing to using two cover circuit component and mechanical organs, out of order probability can be high.
Therefore, be necessary to provide a kind of improved position sensing apparatus, this position sensing apparatus can reduce manufacturing cost, and reduces out of order probability.
utility model content
In order to reach above object, it is a kind of for the neutral gear position of sensing rotating shaft (108) and the sensing device of reverse gear position that the utility model provides, described rotating shaft (108) can rotate or move linearly, in described rotating shaft (108), be fixedly installed vertically magnet (102) and ferromagnetic block (113), it is characterized in that described sensing device (104,106).Described sensing device comprises:
Be arranged on the sensing element (104) of rotating shaft (108) top, when rotating shaft (108) is in reverse gear or non-reversing gear when position, along with the rotation of rotating shaft (108), described sensing element (104) produces the first electrical signal of reaction or the second electrical signal of reaction;
Treatment circuit (106), corresponding to the first electrical signal of reaction and the second electrical signal of reaction, described treatment circuit (106) produces the first voltage signal or the second voltage signal;
Indicating circuit (508), corresponding to the first voltage signal and the second voltage signal, described indicating circuit (508) produces neutral gear position signal and reverse gear position signal.
In order to reach above object, it is a kind of for the neutral gear position of sensing rotating shaft (108) and the sensing system of reverse gear position that the utility model provides, and described rotating shaft (108) can rotate or move linearly.Institute's sensing system comprises:
Be fixedly installed on magnet (102) and ferromagnetic block (113) in rotating shaft (108), described ferromagnetic block (113) is arranged on one end of described magnet (102); With
Be arranged on discretely the sensing element (104) of rotating shaft (108) top, when rotating shaft (108) is in reverse gear or non-reversing gear when position, along with the rotation of rotating shaft (108), described sensing element (104) produces the first electrical signal of reaction or the second electrical signal of reaction.
By providing with upper sensor and corresponding sensing system, the utility model has overcome mentioned defect of the prior art above.
Brief description of the drawings
With reference to accompanying drawing, the utility model embodiment is described, wherein:
Fig. 1 has described 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;
Fig. 2 has described the position sensing 100 of Fig. 1, and the vertical view of the rotating shaft 108 shown in Fig. 1 is shown;
Fig. 3 has described position sensing 100, and the sectional view of the rotating shaft 108 shown in Fig. 2 along the line A-A in Fig. 2 is shown;
Fig. 4 A-4B has described magnet arrangement 102 in Fig. 1-3 and the more detailed structure of sensing apparatus 104;
Fig. 5 A-5C has shown the schematic diagram of six gears of hand gear automobile and magnet arrangement 102 relative positions, and wherein, Fig. 5 A shows the schematic diagram of six gears of hand gear automobile and neutral position; Fig. 5 B shows the magnet arrangement that is provided with ferromagnetic block and is positioned at the schematic diagram of neutral position; Fig. 5 C has described the magnet arrangement that is provided with ferromagnetic block and lays respectively at neutral position, 1-3-5 shelves and enter file location and 2-4-R shelves and enter the schematic diagram of file location;
Fig. 6 A-6C has shown six gears of hand gear that show for Fig. 5 A-5C, in the output signal of sensing apparatus 104 magnet arrangement 102 during corresponding to different gear;
The magnetic line of force that Fig. 7 A and 7B have described the magnet arrangement that is not provided with magnet piece distributes and is provided with the schematic diagram of the magnetic line of force distribution of the magnet arrangement of ferromagnetic block, wherein, Fig. 7 A has shown that magnet arrangement 102 is not arranging the distribution of the change in magnetic flux density of 113 sections of ferromagnetic block/changes of magnetic field, and Fig. 7 B has shown that magnet arrangement 102 is being provided with the distribution of the change in magnetic flux density of 113 sections of ferromagnetic block/changes of magnetic field;
Fig. 8 A has described the more detailed structure of an embodiment of the processing circuitry 106 in position sensing 100;
Fig. 8 B illustrates the detailed configuration diagram of the processing unit 504 shown in Fig. 8 A;
Fig. 9 A has described in calibration (or simulation) program, sensing apparatus 104 responds in space 183 along Bx and By dimension change in magnetic flux density as shown in Figure 7A and/or changes of magnetic field and the output that meets two function lines (740,706) producing;
Fig. 9 B has described the Voltage-output that meets linear function 722.1 producing in calibration (or simulation) program, and this calibration (or simulation) program is being installed or before use location sensing system 100, carrying out on the spot;
Linear function line 722.1 formation that Fig. 9 C has described based in calibration (or simulation) program have first signal state (high voltage V
high) and secondary signal state (low-voltage V
low) the scheme of two state signaling 107;
Figure 10 demonstrates two change in magnetic flux density corresponding to Fig. 7 A and the 7B/changes of magnetic field producing in calibration (or simulation) program and distributes, and two Linear voltage outputs 722.1 and 722.2 that produce; And
Figure 11 illustrates engine control system 900, and wherein the output 111 of the processing circuitry 106 shown in Fig. 1-3 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 utility model embodiment can be configured to many different directions, directional terminology is used as the object of aid illustration and limits anything but.As much as possible, the same or analogous mark and the symbol that in institute's drawings attached, use represent same or analogous part.
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 with processing circuitry 106 by connecting 109, rotates together with rotating shaft 108 and magnet arrangement 102 is installed in rotating shaft 108 and be suitable for 108 axle (or axle center) 112 (as shown in Figure 3) around the shaft.Sensing apparatus 104 is positioned at the top of magnet arrangement 102, mutual copline in the direction of Graph-Oriented 1, and separate a distance B (or space) 183 with magnet arrangement 102.When magnet arrangement 102 is when 108 axle 112 rotates around the shaft, magnet arrangement 102 can produce change in magnetic flux density to the position at sensing apparatus 104 places (or detecting location), and then produces changes of magnetic field.In the time that sensing apparatus 104 is 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, produces electric signal for response by the caused changes of magnetic field of change in magnetic flux density.Sensed electric signal is transported to processing circuitry 106 by sensing apparatus 104, the electric signal sensing described in processing circuitry 106 responses, and then locate to produce two two state signalings 110 (neutral gear position signal) and 199 (position signalling reverses gear) at its output terminal (, connecting 111 and 189).
One end (for example right-hand member) of magnet arrangement 102 is provided with ferromagnetic block 113 (ferromagnetic), change in magnetic flux density/the changes of magnetic field of one section that magnet arrangement 102 is not overlapped with ferromagnetic block 113 is not subject to the impact of ferromagnetic block 113, and magnet arrangement 102 overlaps with ferromagnetic block 113 one section of impact that is subject to ferromagnetic block 113.
As shown in fig. 1, rotating shaft 108 can longitudinal along it (or its axial or length direction) be moved as the crow flies, and also can rotate around axle 112 (as shown in Figure 3).In the time that rotating shaft 108 is longitudinally moved as the crow flies along it, processing circuitry 106 keeps 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 (neutral gear position signal) in output 111.But when rotating shaft 108 is in the time that its axle 112 rotates, processing circuitry 106 can be according to the rotational angle of rotating shaft 108, at its output terminal 111 place's two state signalings (neutral gear position signal), in V
highand V
lowbetween change the Voltage-output of two states.In other words, processing circuitry 106 responds the rotational angle of rotating shaft 108, at V
highand V
lowbetween change its two State-output 111.
In addition, as shown in Figure 1, in rotating shaft 108, during not in reverse gear axial location, ferromagnetic block 113 staggers with sensing apparatus 104; In rotating shaft 108, in reverse gear axial location and while turning to reverse gear position, ferromagnetic block 113 is alignd with the sensing points of magnet arrangement 102.So, when rotating shaft 108 is not during in reverse gear axial location, along with the rotation of rotating shaft 108, processing circuitry 106 does not change the output state of two state signaling (position signalling reverses gear) in output 189, because ferromagnetic block 113 staggers with the sensing points of sensing apparatus 104.But when rotating shaft 108 is in reverse gear axial location and while turning to reverse gear position, processing circuitry 106 can be according to the rotational angle of rotating shaft 108, at its output terminal 189 place's two state signalings (position signalling reverses gear), in V
highand V
lowbetween change the Voltage-output of two states.In other words, processing circuitry 106 responds the rotational angle of rotating shaft 108 at reverse gear place, at V
highand V
lowbetween change its two State-output 189 because ferromagnetic block 113 is alignd with the sensing points of magnet arrangement 102.
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 utility model is described better, sensing apparatus 104 is schematically arranged in rotating shaft 108 sides of Fig. 2, but reflects the above-mentioned actual positional relationship between magnet arrangement 102 and sensing apparatus 104 with dotted line 129.
As shown in Figure 2, magnet arrangement 102 has along the length L in rotating shaft 108 longitudinal (or length direction) to guarantee that in the time that rotating shaft 108 is longitudinally 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 represent along rotating shaft 108 longitudinally on center line, and dotted line 115 and 117 defines be concerned about slewing area (L1 ,+L1).In other words,, when rotating shaft 108 is in the time that axle 112 turns left and turns right, longitudinally (or length direction) upper center line 114 rotates towards dotted line 115 and 117 respectively.
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 in the diametric(al) rotating shaft 108) from its center to bear left and move 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 in diametric(al) passes through and cuts the axle (or axle center) 112 of rotating shaft 108.Therefore, the scope of activities (Lm ,+Lm) of the whole rotation of two dotted line 121 and 123 restriction rotating shafts 108.In the scope of activities (Lm ,+Lm) of whole rotation, two dotted lines 115 and 117 limit the rotation scope of activities of rotating shaft 108 inside, or are called slewing area (L1 ,+L1) (that is: neutral gear position scope).In the specific embodiment shown in Fig. 3, the scope of activities of whole rotation and inner rotation scope of activities arrange about center line 113 symmetries in axle 112 and the rotating shaft 108 of rotating shaft 108.In other words, for the center line 113 in axle 112 and diametric(al) ,-Lm and-equal respectively+Lm of slewing area between L1 and+slewing area between L1.But the rotation scope of activities of asymmetric setting is also possible for a person skilled in the art.In addition it is also possible, expanding the whole rotation scope of activities (Lm ,+Lm) of rotating shaft 108 to 360 degree.In order clearly to limit the position relationship between the parts in Fig. 1-3, should be noted that the center line 113 in 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) along in rotating shaft 108 longitudinally.Magnet 102 side surfaces are provided with ferromagnetic block 113.
When collaborative work, the angle position of sensing apparatus 104 and the detectable rotating shaft 108 of processing circuitry 106 and produce neutral position two condition indicative signals 107 and produce reverse gear position two condition indicative signals 199 on output terminal 111 on output terminal 189.Specifically, when rotating shaft 108 is in the time that slewing area (L1 ,+L1) is interior, processing circuitry 106 can produce neutral position first signal state (high-voltage state V
highor low-voltage state V
low); When rotating shaft 108 is outside slewing area (L1 ,+L1) when (or exceeding this slewing area), processing circuitry 106 produces neutral position secondary signal state (low-voltage state V
lowor high-voltage state V
high).In addition, when rotating shaft 108 is when axially in reverse gear position, processing circuitry 106 can produce reverse gear position first signal state (high-voltage state V
highor low-voltage state V
low); When rotating shaft 108 is when axially in reverse gear position, processing circuitry 106 produces reverse gear position secondary signal state (low-voltage state V
lowor high-voltage state V
high).
Fig. 4 A has described an embodiment of the magnet arrangement 102 shown in Fig. 1-3 and sensing apparatus 104.As shown in Figure 4 A, magnet arrangement 102 comprises the magnet 304A with the South Pole and the 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 the magnet 304A arctic is set to mutually face.Magnet 304A side surface is provided with ferromagnetic block 113.Center line 113 in axle 112 and rotating shaft 108 diametric(al)s of the South Pole of magnet 304A and the arctic and rotating shaft 108 aligns.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 longitudinally.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, in the time being exposed to rotation (or variation) magnetic field, can produce electric signal.More specifically, Hall effect sensing element 302 can be the semiconductor film (current-carrying semi-conductor membrane) of current-carrying, can in the time of the change in magnetic flux density/changes of magnetic field being subject to perpendicular to film surface, produce the voltage perpendicular to direction of current.As shown in Figure 4 A, magnetic flux density/magnetic field is interior along three-dimensional coordinate 303 (B in space 183
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 change in magnetic flux density/changes of magnetic field sensitivity and sensitive detecting location that the magnet 304A by rotating is caused.In Fig. 4 A, B represents magnetic flux density; B
xrepresent above and perpendicular to the magnetic flux density of sensing element 302 to measure along the straight radial direction (the radial direction) of axle 108; And B
yrepresent to measure 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 sensing apparatus shown in Fig. 4 A with sensing apparatus 104, except the polar orientation of magnet 304B is different with the direction of the magnet 304A in Fig. 4 A.As shown in Figure 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.Center line in axle 112 and the rotating shaft 108 of the north and south poles of magnet 304B and rotating shaft 108 aligns.According to identical with the described principle of Fig. 4 A, magnetic field in 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.Magnet 304B side surface is provided with ferromagnetic block 113.
Fig. 5 A-5C has shown the schematic diagram of six gears of hand gear automobile and magnet arrangement 102 relative positions.In Fig. 5 A, 1,3,5 gears are in the upside of rotating shaft 108, and 2,4, R gear is in the downside of rotating shaft 108.
As previously mentioned and with reference to Fig. 5 B, magnet arrangement 102 is axially disposed within rotating shaft 108 along rotating shaft (or gear axle) 108.Sensing apparatus 104 arranges with magnet arrangement 102 intervals.As Figure 1-3, sensing apparatus 104 is arranged on the top of magnet arrangement 102 (or rotating shaft 108); In one embodiment, ferromagnetic block 113 arranges a relatively side of R shelves of magnet arrangement 102.Wherein R represents reverse gear.
In Fig. 5 A, the Range Representation magnet arrangement 102 between dotted line 115 and 117 is in the slewing area of neutral position, and the center of the scope of magnet arrangement 102 in neutral position now.With reference to Fig. 6 A to Fig. 6 C, magnet arrangement 102 can axially move linearly left and right along it with rotating shaft 108, axially has three working positions (1-2 shelves, 3-4 shelves, 5-R shelves) at it.When magnet arrangement 102 is during in 1-2 shelves working position, upwards rotate 1 grade of incision, and rotate 2 grades of incisions; When magnet arrangement 102 is during in 3-4 shelves working position, upwards rotate 3 grades of incisions, and rotate 4 grades of incisions; When magnet arrangement 102 is during in 5-R shelves working position, upwards rotate 5 grades of incisions, and rotate incision R shelves.
In Fig. 5 B, magnet arrangement 102 is in 5-R shelves working position, but magnet arrangement 102 is still in the center of the scope of neutral position.As shown in Figure 5 B, the setting of ferromagnetic block 113 on magnet arrangement 102 will ensure that, in the time that magnet arrangement 102 is in 5-R shelves working position, ferromagnetic block 113 is also in 5-R shelves working position.
According to the utility model, two kinds of position relationships below ferromagnetic block 113 and the setting of magnet arrangement 102 in rotating shaft 108 will ensure, that is: (1) is in the time that magnet arrangement 102 is in 1-2 shelves or 3-4 shelves working position, the detecting location of ferromagnetic block 113 and sensing apparatus 104 staggers, so that ferromagnetic block 113 does not exert an influence to the sensing of sensing apparatus 104; (2), in the time that magnet arrangement 102 is in 5-R shelves working position, the detecting location alignment of ferromagnetic block 113 and sensing apparatus 104, so that ferromagnetic block 113 exerts an influence to the sensing of sensing apparatus 104.So in the time that magnet arrangement 102 (or rotating shaft 108) is in 1-2 shelves or 3-4 shelves working position, the rotation switching of magnet arrangement 102 (or rotating shaft 108) between 1-2 shelves or 3-4 shelves can not exert an influence to the sensing of sensing apparatus 104; And in the time that magnet arrangement 102 (or rotating shaft 108) is in 5-R shelves working position, the rotation switching meeting of magnet arrangement 102 (or rotating shaft 108) between 5-R exerts an influence to the sensing of sensing apparatus 104.
Fig. 5 C illustrates when magnet arrangement 102 is during in 5-R shelves working position, three positions in rotation: (1) magnet arrangement 102 (or rotating shaft 108) is at neutral centre position (neutral position), (2) magnet arrangement 102 (or rotating shaft 108) turns at 5 grades (in gear) from neutral centre position, and (3) magnet arrangement 102 (or rotating shaft 108) turns at R shelves (in gear) from neutral centre position.When magnet arrangement 102 (or rotating shaft 108) upwards rotates from the center of the scope of neutral position, cut 5 grades; When magnet arrangement 102 (or rotating shaft 108) rotates from the center of the scope of neutral position, incision R shelves (in gear).Certainly, magnet arrangement 102 (or rotating shaft 108) is done on position at 1-2 shelves or 3-4 shelves, make left-right rotation from the center (neutral position) of the scope of neutral position, cut respectively 1,2 grade or 3,4 grades (in gear).
Fig. 6 A-6C has shown six gears of hand gear that show for Fig. 5 A-5C, in the output signal of sensing apparatus 104 magnet arrangement 102 during corresponding to different gear.In Fig. 6 A-6C, X coordinate is corresponding to the rotational angle of rotating shaft 108, and Y coordinate is corresponding to the intensity of the output signal (can be electric signal or frequency signal) of sensing apparatus 104.Specifically, Fig. 6 A shows and passes through neutral (neutral) to moving down into while converting between 2 grades of cutting into position (in gear) from 1 grade of cutting into position (in gear), the output signal of sensing apparatus 104 when hand gear; Fig. 6 B shows and passes through neutrals (neutral) to moving down into while converting between 4 grades of cutting into position (in gear) from 3 grades of cutting into position (in gear), the output signal of sensing apparatus 104 when hand gear; Fig. 6 C shows and passes through neutrals (neutral) to moving down into while converting between reverse gear (R) cutting into position (in gear) from 5 grades of cutting into position (in gear), the output signal of sensing apparatus 104 when hand gear.Can find out, because while moving between 1-2 and 3-4 shelves cutting into position, sensing apparatus 104 is not subject to the impact of ferromagnetic block, so Fig. 6 A is the same with the output signal in 6B.But in Fig. 6 C, because while movement between 5-R shelves cutting into position, sensing apparatus 104 is subject to the impact of ferromagnetic block 113, so the slope of the slope of the output signal (representing with solid line) producing when the moving between 5-R shelves cutting into position of sensing apparatus 104 in Fig. 6 C raw output signal (dotting) when moving between 1-2 and 3-4 shelves cutting into position more greatly or steeper, like this, between reverse gear (R) cutting into position and 2/4 grade of cutting into position, the output signal strength difference on two curves of output increases.The difference of this output signal strength for the utility model, distinguishes reverse gear (R) cutting into position and 2/4 grade of cutting into position.In Figure 10, the output signal of magnet arrangement 102 is further described when in Fig. 6 A-6C, aobvious sensing apparatus 104 is corresponding to different gear.
Fig. 7 A has shown that magnet arrangement 102 is in magnetic flux density/Distribution of Magnetic Field that 113 sections of ferromagnetic block are not set, and 7B has shown that magnet arrangement 102 is in the magnetic flux density/Distribution of Magnetic Field that is provided with 113 sections of ferromagnetic block.Can find out from Fig. 7 A, owing to not being subject to the impact of ferromagnetic block 113, be symmetrical in the magnetic flux density/Distribution of Magnetic Field of magnet arrangement 102 both sides.Can find out from Fig. 7 B, owing to being subject to the impact of ferromagnetic block 113, be asymmetric in the magnetic flux density/changes of magnetic field of magnet arrangement 102 both sides, at magnet arrangement 102, a side of ferromagnetic block 113 is being set that is:, and magnetic flux density/Distribution of Magnetic Field has produced variation.So in the time that sensing apparatus 104 sections different from magnet arrangement 102 align, can sense different change in magnetic flux density/changes of magnetic field, thereby produce the different signals (electric signal or frequency signal) that sense.
Fig. 8 A describes an embodiment of the processing circuitry 106 in position sensing 100 in detail.As shown in Figure 8 A, processing circuitry 106 comprises analog/digital conversion circuit 502, processing unit (or digital processing element) 504 and indicating circuit (or two condition indication circuits) 508.1 and 508.2, and all these circuits are all electrically connected by connecting 503,505.1,505.2,507.1 and 507.2.Analog/digital conversion circuit 502 is electrically connected with sensing apparatus 104 by connecting 109, this analog/digital conversion circuit 502 receives analog electronic signal as input, by 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 signal and can determine that rotating shaft 108 is whether in slewing area (L1 ,+L1), and can determine whether rotating shaft 108 cuts reverse gear position.Based on determining of processing unit 504, when rotating shaft 108 is in the time that slewing area (L1 ,+L1) is interior, two State-outputs 111 of indicating circuit 508.1 are arranged to neutral first signal state (high-voltage state V by processing unit 504
highor low-voltage state V
low); When rotating shaft 108 is outside slewing area (L1 ,+L1) when (or exceeding this slewing area), two State-outputs 111 of indicating circuit 508.1 are arranged to neutral secondary signal state (low-voltage state V by processing unit 504
lowor high-voltage state V
high).
Similarly, based on determining of processing unit 504, when rotating shaft 108 is during in reverse gear position, processing unit 504 is by two State-outputs 189 of indicating circuit 508.2 first signal state (the high-voltage state V that is arranged to reverse gear
highor low-voltage state V
low); When rotating shaft 108 is during in non-reverse gear position, processing unit 504 is by two State-outputs 189 of indicating circuit 508.2 secondary signal state (the low-voltage state V that is arranged to reverse gear
lowor high-voltage state V
high).
More specifically, two State-outputs 111 of indicating circuit 508.1 can arrange according to connecting two control signals that occur on 505.1 and 507.1; Namely, according to the state control signal (having the first control signal state and the second control signal state) and the trigger pip (or trigger pulse) being connected on 507.1 that connect on 505.1, indicating circuit 508.1 is arranged on high-voltage state (V
high) or low-voltage state (V
low).Connect on 505.1 when digital processing element 504 is transported to trigger pulse to connect on 507.1 and state control signal is transported to, indicating circuit 508.1 is configured to the voltage status identical with appearing at the state control signal that connects on 505.1.In the time that trigger pip is not transported in connection 507.1, indicating circuit 508.1 keeps its current output states, and is not appeared at the impact that connects state control signal on 505.1.As an embodiment, the logic function of indicating circuit 508.1 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 505.1 and by trigger pip and is transported to and connects on 507.1, and first signal state (high-voltage state V is arranged to by indicating circuit 508 by this
highor low-voltage state V
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 connection 505.1 by the second control signal state (low state of a control signal or high state of a control signal) and trigger pip is transported to and is connected on 507.1, and secondary signal state (low-voltage state V is arranged to by indicating circuit 508.2 by this
lowor high-voltage state V
high).
Similarly, two State-outputs 189 of indicating circuit 508.2 can arrange according to connecting two control signals that occur on 505.2 and 507.2; Namely, according to the state control signal (having the first control signal state and the second control signal state) and the trigger pip (or trigger pulse) being connected on 507.2 that connect on 505.2, indicating circuit 508.2 is arranged on high-voltage state (V
high) or low-voltage state (V
low).Connect on 505.2 when digital processing element 504 is transported to trigger pulse to connect on 507.2 and state control signal is transported to, indicating circuit 508.2 is configured to the voltage status identical with appearing at the state control signal that connects on 505.2.In the time that trigger pip is not transported in connection 507.2, indicating circuit 508.2 keeps its current output states, and is not appeared at the impact that connects state control signal on 505.2.As an embodiment, the logic function of indicating circuit 508.2 equally can be by realizing with J-K register or D register.
Therefore, in the time that processing unit 504 determines that rotating shaft 108 is in reverse gear position, 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 505.2 and by trigger pip and is transported to and connects on 507.2, and first signal state (high-voltage state V is arranged to by indicating circuit 508.2 by this
highor low-voltage state V
low).When processing unit 504 determines that rotating shaft 108 is not while being in reverse gear position, processing unit 504 is transported to connection 505.2 by the second control signal state (low state of a control signal or high state of a control signal) and trigger pip is transported to and is connected on 507.2, and secondary signal state (low-voltage state V is arranged to by indicating circuit 508.2 by this
lowor high-voltage state V
high).
Fig. 8 B has described the more detailed structure of processing unit 504 shown in Fig. 8 A.As shown in Fig. 8 B, 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 608 are connected with bus 610 with 609 by being connected 603,605,607 respectively.Memory storage 606 program storages (, one instruction sequence), parameter (for example, reference voltage shown in 9B and 10) 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 to processing unit 504 (connecting 505 and 507 as sent to).Register 604 can provide and holding signal state for one or more CPU operating cycle based on being kept at content in this register, so as processor 602 can be within the CPU operating cycle executable operations.
Be stored in the program in memory storage 606 by execution, processor (or CPU) 602 can control register 604, the operation of 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 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 617.Processor (or CPU) 602 can be determined subsequent operation by the comparative result based in output 617.More specifically, based on this comparative result, processor (or CPU) 602 can produce desired state control signal with trigger pip (or trigger pulse) and they are sent to and are connected on 505.1,505.2,507.1 and 507.2.
Fig. 9 A has described in calibration (or simulation) program, sensing apparatus 104 responds in space 183 along Bx and By dimension the magnetic flux density as shown in Fig. 7 A or Fig. 7 B and/or Distribution of Magnetic Field and the output that meets two function lines (740,706) producing.
Specifically, in the time of magnet arrangement 102 108 axle (or axle center), 112 lasting rotation around the shaft, sensing apparatus 104 produces response along change in magnetic flux density and/or the changes of magnetic field of Bx and By dimension respectively to what produced by magnet arrangement 102, and according to change in magnetic flux density and/or 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 magnet arrangement 102 is in the time that axle 112 continues 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.In the coordinate system as shown in Fig. 9 A, X coordinate represents the variation of the rotation angle of rotating shaft 108, and 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 (, X and Y dimension).On this use market, ready-made circuit way has been saved circuit design cost and has reduced the circuit design time.
Fig. 9 B has described the Voltage-output that meets linear function 722.1 producing in calibration (or simulation) program, and this calibration (or simulation) program is being installed or before use location sensing system 100, carrying out on the spot.In the time carrying out calibration (or simulation) program, treating apparatus (as comprised the processing circuitry 106 of 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. 9 A) to produce the Voltage-output that meets linear function line 722.1.Should be understood that the change in voltage shown in Fig. 9 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 722.1 as shown in Fig. 9 B, X coordinate represents the variation of the rotation angle in rotating shaft 108, and the voltage (or frequency) on Y coordinates table timberline function line 722.1 changes.
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 (CPU) 602 in processing unit 504 is stored into them in memory storage 606, then converts these two groups of digitized electronic signals to meet the linear function line 722.1 as shown in Fig. 7 B one group of electronic signal.Processor (CPU) 602 in processing unit 504 is by using following mathematical formula to change these two groups of digitized electronic signals:
(1) output voltage.
1(V.
1function=m x (angle)+b=m x θ+b of)=angle
(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)) in the step that reflects at above-mentioned five mathematical formulaes of+b, 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 make the linearity of function line 722.1 be accurately reflected in operating conditions change time angular position range, k is the constant for adjusting/penalty function line 722.1; Sin (θ) and cos (θ) be the function line 706 and 704 shown in presentation graphs 9A respectively; Equation (4) represents by the Voltage-output shown in the function line 722.1 in Fig. 9 B; And equation (5) represents to use the Voltage-output of regulate/compensation of constant k.In the time of 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 722.1 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 or numerical value) V on the Voltage-output of linear function line 722.1
f1and V
f2.Particularly, as shown in Fig. 9 B, two reference voltage V
f1and V
f2confirmation relevant with two angular position of rotation of respective dashed 115 (L1) and 117 (+L1) respectively.In order to keep output voltage in the dotted line 115 and 117 central rotation angle symmetry corresponding with dotted line 113, first processor (CPU) 602 can confirm the center reference voltage V relevant with dashed centre line 113 in rotating shaft 108
c.Then, processor (CPU) 602 is according to center reference voltage V
cconfirm about center reference voltage V
csymmetrically arranged two reference voltage V
fland V
f2.
Linear function line 722.1 formation that Fig. 9 C has described based in calibration (or simulation) program have 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 Figure 9 C, by equaling or all electrical voltage points (or voltage) on the linear function line 722.1 between two reference voltage points (or voltage) coupling (or appointment) is the first two state signaling (high voltage V
high), and by being less than the first reference voltage V
f1or be greater than the second reference voltage V
f2linear function line 722.1 on all electrical voltage points coupling (or appointment) be the second two state signaling (low-voltage V
lowthereby) formation two state signaling 107.In the time that the output of calibration (or simulation) is sent to oscillograph, the electronic signal as shown in Fig. 9 B-C can also be observed from oscillograph.
Should be noted that, calibrate in (or simulation) program although illustrate at Fig. 9 A-9B, sensing apparatus 104 respond in space 183 along Bx and By dimension magnetic flux density as shown in Figure 7A and/or Distribution of Magnetic Field and produce meet two function lines (740,706) output, thereby the Voltage-output that meets linear function 722.1 producing, further produces neutral position two state signaling 107; To magnetic flux density and/or Distribution of Magnetic Field as shown in Fig. 7 B, the people of this area can calibrate with Fig. 9 A-9B (or simulation) program equally, the output that meets other Sin and two function lines of Cos producing, thereby the Voltage-output that meets another linear function 722.2 (seeing Figure 10) producing, produces reverse gear position two state signaling.
Figure 10 demonstrates two change in magnetic flux density corresponding to Fig. 7 A and the 7B/changes of magnetic field producing in calibration (or simulation) program and distributes, two Linear voltage outputs 722.1 and 722.2 that in sensing apparatus 104 and processing circuitry 106, processing unit 504 produces.Linear voltage output 722.1 is sensing apparatus 104 along with the Linear voltage output along Bx and By dimension, magnetic flux density as shown in Figure 7A and/or Distribution of Magnetic Field being produced in response space 183; And Linear voltage output 722.2 is sensing apparatus 104 along with the Linear voltage output along Bx and By dimension, the magnetic flux density as shown in Fig. 7 B and/or Distribution of Magnetic Field being produced in response space 183.
In Figure 10, X coordinate represents the output signal of sensing apparatus 104, and Y coordinate represents the largest circumference rotational angle range (Lm ,+Lm) of rotating shaft 108.In Figure 10, on Y coordinate, largest circumference rotational angle range (Lm ,+Lm) is divided into 40 units, the center of neutral is located in 20 units of Y coordinate, the scope of neutral gear position is arranged between 17 and 23 units, between dotted line 115 and 117 positions.Because circular motion is symmetrical periodic motion, so its reference position can be arranged on 1,3,5 position, i.e. near in 0 unit position (or 0 unit position); In 40 unit positions (or near 40 unit positions, i.e. dotted line 115 positions), be 2,5, the cutting into position of R shelves.As can be seen from Figure 10, from 0 to 25 unit, two Linear voltage outputs 722.1 and 722.2 are more or less the same, so illustrate that with these two Linear voltage outputs displacement accuracy that the signal of neutral gear position scope produces, within can accepting scope, can not affect the operation of gear; And from from 25 to 40 units, two Linear voltage outputs 722.1 and 722.2 differ and increase gradually, so with these two Linear voltage outputs, at dotted line 199 places, can distinguish rotating shaft 108 is 2,4 grades of incisions or incision R shelves.
From Figure 10, two Linear voltage output signals 722.1 and 722.2 can be found out after comparing, when rotating shaft 108 from 1 grade to 2 grades or from 3 grades to 4 grades rotate time, curve of output is 722.1; And in the time that rotating shaft 108 is rotated from 5 grades to R shelves, curve of output is 722.2.As can be seen from Figure 10, in 1,3,5 file locations, be that output on 722.1 and 722.2 is about the same at curve; And in R file location, the output of R shelves is greater than at 2,4 grades in 722.1 output on 722.2.
According to the utility model, first, two that in calibration (or simulation) program, produce from the Linear voltage output 722.1 and 722.2 shown in Figure 10; Then, take out six reference voltages (or referential data) from two Linear voltage outputs 722.1 and 722.2.For Linear voltage output 722.1, with dotted line 117,115,199 intersections, extraction V
f1.1, V
fl.2and V
fl.3three reference voltages (or referential data); For Linear voltage output 722.2, with dotted line 117,115,199 intersections, extraction V
f2.1, V
f2.2and V
f2.3three reference voltages (or referential data).This six each and every one reference voltage (or referential data) deposits memory storage 606 in.
It should be understood that, shown in Fig. 9 A-9B and Figure 10, Sin and Cos are inputted to the principle that converts Voltage-output to, be equally applicable to convert Sin and Cos input to PWM, SENT exports, thereby decides the signal output of neutral gear position and reverse gear position with the numerical value of PWM or SENT.
In actual use, processing unit 504 use V
f2.1and V
f1.2two reference voltages (or referential data) judge that rotating shaft 108, whether at neutral gear position, uses V
f1.3and V
f2.3two reference voltages (or referential data) judge that whether rotating shaft 108 is in 2,4 file locations or R file location.Specifically, when rotating shaft 108 is from 1,2,3,4,5 or R shelves while getting back to neutral gear position scope, processor 602 receives a signal by I/O circuit 608, processor 602 is by this signal and exist the reference voltage (or referential data) in memory storage 606 to compare, and judges that the magnitude of voltage of this signal is at V
f2.1and V
f1.2between, 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 505.1 and by trigger pip and is transported to and connects on 507.1, and first signal state (high-voltage state V is arranged to by indicating circuit 508 by this
highor low-voltage state V
low), to indicate rotating shaft 108 on neutral position.When rotating shaft 108 turns and switches to 1,2,3,4,5 or when R file location from neutral gear scope shelves, processor 602 receives a signal by I/O circuit 608, processor 602 is by this signal and have the reference voltage comparison in memory storage 606, judges that the magnitude of voltage of this signal is less than V
f2.1and be greater than V
r1.2processing unit 504 is transported to the second control signal state (low state of a control signal or high state of a control signal) to connect on 505.2 and by trigger pip and is transported to and connects on 507.2, and secondary signal state (low-voltage state V is arranged to by indicating circuit 508.2 by this
lowor high-voltage state V
high), to indicate rotating shaft 108 not on neutral position.
In actual use, in the time that R or 2/4 grade are cut in rotating shaft 108, processor 602 receives a signal by I/O circuit 608, processor 602 is by this signal and exist the reference voltage (or referential data) in memory storage 606 to compare, and judges that the magnitude of voltage of this signal is being greater than V
f1.2, and then this signal and V
f2.3compare, because this signal and V
f2.3equate (or and V
f2.3differ in a preset range), 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 505.2 and by trigger pip and is transported to and connects on 507.2, and first signal state (high-voltage state V is arranged to by indicating circuit 508.2 by this
highor low-voltage state V
low), to indicate rotating shaft 108 in reverse gear position.If this signal is not equal to V
f2.3equate (or and V
f2.3differ by more than in a preset range), processor 602 is by this signal and have the reference voltage comparison in memory storage 606, judges this signal and V
f1.3equate (or and V
f1.3differ in a preset range), processing unit 504 is transported to the second control signal state (low state of a control signal or high state of a control signal) to connect on 505.2 and by trigger pip and is transported to and connects on 507.2, and secondary signal state (low-voltage state V is arranged to by indicating circuit 508.2 by this
lowor high-voltage state V
high), to indicate rotating shaft 108 not in reverse gear position.
Figure 11 has described engine control system 900, and wherein two State-outputs 111 of processing circuitry 106 (or processing circuitry 106 ') are used to control the engine 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 the neutral position scope of slewing area (L1 ,+L1) reflection shift lever.
As shown in Figure 11, ECU (control unit of engine) 902 receives from processing circuitry 106 the neutral position two state signaling connecting 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 instruction automobiles is jammed on.For example, when ECU902 (5 seconds) when connecting neutral position two state signaling on 111 and detect shift lever and rest on neutral position scope and had a time period, the engine of its closing automobile, to save gasoline.When the clutch coupling of ECU902 based on connecting input on 903 and detect automobile just jammed on, ECU902 visits to judge and surveys shift lever whether within the scope of neutral position based on connecting neutral position two state signaling on 111.ECU902 is starting engine in the time that shift lever is within the scope of neutral position only.And reverse gear position two state signaling is sent to control circuit, start reverse gear indicating device, people's (as reverse gear pilot lamp or voice device).
It should be noted that, as another embodiment, processing unit 504 in processing circuitry 106 can be to not dealt with by the position signalling of sensing apparatus 104 rotating shaft that senses 108, and this position signalling is directly outputed to engine control system 900, and a processing unit 1104 is set engine control system 900 is interior, processed by processing unit 1104.Processing unit 1104 comprises processing unit 504 and two indicating circuits 508.1,508.2 as shown in Figure 8 A.Processing unit 1104 is inputted (being the processing unit 504 in processing unit 1104) and is exported 505 with the processing unit 504 in processing circuitry 106 and be connected, and accepts use Linear voltage output (722.1,722.2) and reference voltage (or referential data) V as shown in figure 10
f1.1, V
fl.2, V
f1.3, V
f2.1, V
f2.2and V
f2.3, and identify neutral position and reverse gear position by aforesaid operations principle engine control system 900 is interior, and produce neutral position and reverse gear position signal.Because in the ordinary course of things, a processing unit is set always, so can not increase the cost of engine control system 900 in engine control system 900.Because the processing unit 504 in processing unit 1104 is the same with two indicating circuit 508.1,508.2 26S Proteasome Structure and Functions with the processing unit 504 in processing circuitry 106 with two indicating circuits 508.1,508.2, for the no longer repeated description of structure, connection and function of the processing unit 504 in processing unit 1104 and two indicating circuits 508.1,508.2.
Below the operation of sensing neutral position:
While use on the spot, digital processing circuit 106 as shown in Figure 8 A responds the rotation of rotating shaft 108, use following steps that the neutral position signal setting on indicating circuit 508.1 is become to first signal state (corresponding to neutral gear position) and secondary signal state (corresponding to non-neutral gear position), as follows:
(K-1) while use on the spot, according to an embodiment, when rotating shaft 108 is at the scope of activities (Lm in whole rotation, + Lm) in rotate time, sensing device 104, based on shown in Fig. 7 A or 7B magnetic flux density and/or Distribution of Magnetic Field, senses and produces two electronic signals with Sin and Cos shape.
(K-2), according to mathematical formulae (1)-(5), the processor (CPU) 602 in processing circuitry 106 converts two electronic signals with Sin and Cos shape to a voltage signal (output signal or a numerical value).This voltage signal (or numerical value) should drop in analog linearity output 722.1 or 722.2 as shown in figure 10.
(K-3-1) processor (CPU) 602 in processing circuitry 106 by obtained voltage signal (output signal or numerical value) with exist the reference voltage (referential data) in storer 606 to compare.When the definite voltage signal (or numerical value) obtaining of processor (CPU) 602 is at the V of Figure 10
f2.1and V
f1.2between, 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 505.1 and by trigger pip and is transported to and connects on 507.1, and first signal state (high-voltage state V is arranged to by indicating circuit 508.1 by this
highor low-voltage state V
low), to indicate rotating shaft 108 on neutral position; When processor (CPU) 602 determines that the voltage signal (output signal or numerical value) obtaining is not at V
f2.1and V
f1.2between (the magnitude of voltage of this signal is less than V
f2.1and be greater than V
f1.2), processing unit 504 is transported to the second control signal state (low state of a control signal or high state of a control signal) to connect on 505.2 and by trigger pip and is transported to and connects on 507.2, and secondary signal state (low-voltage state V is arranged to by indicating circuit 508.2 by this
lowor high-voltage state V
high), to indicate rotating shaft 108 not on neutral position; Or
(K-3-2) processor (CPU) 602 in engine control system 900 by obtained voltage signal (output signal or numerical value) with exist the reference voltage (referential data) in storer 606 to compare.When processor (CPU) 602 determines that the voltage signal (output signal or numerical value) obtaining is at V
f2.1and V
f1.2between, 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 505.1 and by trigger pip and is transported to and connects on 507.1, and first signal state (high-voltage state V is arranged to by indicating circuit 508.1 by this
highor low-voltage state V
low), to indicate rotating shaft 108 on neutral position; When processor (CPU) 602 determines that the voltage signal (output signal or numerical value) obtaining is not at V
f2.1and V
f1.2between (the magnitude of voltage of this signal is less than V
f2.1and be greater than V
f1.2), processing unit 504 is transported to the second control signal state (low state of a control signal or high state of a control signal) to connect on 505.2 and by trigger pip and is transported to and connects on 507.2, and secondary signal state (the low or high-voltage state V of low-voltage state V is arranged to by indicating circuit 508.2 by this
high), to indicate rotating shaft 108 not on neutral position.
Below the operation of sensing reverse gear position:
While use on the spot, digital processing circuit 106 as shown in Figure 8 A responds the rotation of rotating shaft 108, use following steps that the reverse gear position signal setting on indicating circuit 508.2 is become to first signal state (corresponding to the position of reversing gear) and secondary signal state (corresponding to the non-position of reversing gear), the first operation scheme is as follows:
(D-1-1-a) while use on the spot, when rotating shaft 108 is 5, when R working position, and turn left, during from 5 grades of incision R shelves (with reference to figure 5C), sensing device 104, shown in Fig. 7 B change in magnetic flux density and/or magnetic field variation cloth, change in magnetic flux density and/or changes of magnetic field along X dimension and/or Y dimension that response is produced by magnet arrangement 102, produce two electronic signals with Sin and Cos shape.
(D-1-2-a), according to mathematical formulae (1)-(5), the processor (CPU) 602 in processing circuitry 106 converts two electronic signals with Sin and Cos shape to a voltage signal (output signal or numerical value).This voltage signal (or numerical value) should drop in analog linearity output 722.2 as shown in figure 10.
(D-1-3-a) processor (CPU) 602 in processing circuitry 106 by obtained voltage signal (output signal or numerical value) with exist the reference voltage (referential data) in storer 604 to compare.When processor (CPU) 602 is determined the voltage signal (or numerical value) and the V that obtain
f2.3equate (or and V
f2.3differ in a preset range), processor (CPU) 602 produces respectively corresponding state control signal and trigger pip on 505.2 and 507.2 indicating circuit 508.2 is arranged to first signal state (high-voltage state V connecting
highor low-voltage state V
low).
(D-2-1-a) when rotating shaft 108 is when rotating shaft 108 is 1,2 or 3, when 4 working position and turn left, and from 1/3 grade of incision 2/4 grade time, sensing device 104, shown in Fig. 7 A or 7B change in magnetic flux density and/or magnetic field variation cloth, change in magnetic flux density and/or changes of magnetic field along X dimension and/or Y dimension that response is produced by magnet arrangement 102, produce two electronic signals with Sin and Cos shape.
(D-2-2-a), according to mathematical formulae (1)-(5), the processor (CPU) 602 in processing circuitry 106 converts two electronic signals with Sin and Cos shape to a voltage signal (or a numerical value).This voltage signal (or numerical value) should drop in linearity output 722.1 as shown in figure 10.
(D-2-3-a) processor (CPU) 602 in processing circuitry 106 by obtained voltage signal (or numerical value) with exist the reference voltage (referential data) in storer 604 to compare.When processor (CPU) 602 is determined the voltage signal (or numerical value) and the V that obtain
f1.3equate (or and V
f1.3differ in a preset range), processor (CPU) 602 produces respectively corresponding state control signal and trigger pip indicating circuit 508.2 is arranged to secondary signal state (low-voltage state V in connection 505.2 and 507.2
lowor high-voltage state V
high).
While use on the spot, digital processing circuit 106 as shown in Figure 8 A responds the rotation of rotating shaft 108, use following steps that the reverse gear position signal setting on indicating circuit 508.2 is become to first signal state (corresponding to the position of reversing gear) and secondary signal state (corresponding to the non-position of reversing gear), the second operation scheme is as follows:
(D-1-1-b) while use on the spot, when rotating shaft 108 is 5, when R working position, and turn left, during from 5 grades of incision R shelves (with reference to figure 5C), sensing device 104, shown in Fig. 7 B change in magnetic flux density and/or magnetic field variation cloth, change in magnetic flux density and/or changes of magnetic field along X dimension and/or Y dimension that response is produced by magnet arrangement 102, produce two electronic signals with Sin and Cos shape.
(D-1-2-b), according to mathematical formulae (1)-(5), the processor (CPU) 602 in processing circuitry 106 converts two electronic signals with Sin and Cos shape to a voltage signal (output signal or numerical value).This voltage signal (or numerical value) should drop in analog linearity output 722.2 as shown in figure 10.
(D-1-3-b) processor (CPU) 602 in engine control system 900 by obtained voltage signal (output signal or numerical value) with exist the reference voltage (referential data) in storer 604 to compare.When processor (CPU) 602 is determined the voltage signal (or numerical value) and the V that obtain
f2.3equate (or and V
f2.3differ in a preset range), processor (CPU) 602 produces respectively corresponding state control signal and trigger pip on 505.2 and 507.2 indicating circuit 508.2 is arranged to first signal state (high-voltage state V connecting
highor low-voltage state V
low).
(D-2-1-b) when rotating shaft 108 is when rotating shaft 108 is 1,2 or 3, when 4 working position and turn left, and from 1/3 grade of incision 2/4 grade time, sensing device 104, shown in Fig. 7 A or 7B change in magnetic flux density and/or magnetic field variation cloth, change in magnetic flux density and/or changes of magnetic field along X dimension and/or Y dimension that response is produced by magnet arrangement 102, produce two electronic signals with Sin and Cos shape.
(D-2-2-b), according to mathematical formulae (1)-(5), the processor (CPU) 602 in processing circuitry 106 converts two electronic signals with Sin and Cos shape to a voltage signal (or a numerical value).This voltage signal (or numerical value) should drop in linearity output 722.1 as shown in figure 10.
(D-2-3-b) in engine control system 900 processor (CPU) 602 by obtained voltage signal (or numerical value) with exist the reference voltage (referential data) in storer 604 to compare.When processor (CPU) 602 is determined the voltage signal (or numerical value) and the V that obtain
f1.3equate (or and V
f1.3differ in a preset range), processor (CPU) 602 produces respectively corresponding state control signal and trigger pip indicating circuit 508.2 is arranged to secondary signal state (low-voltage state V in connection 505.2 and 507.2
lowor high-voltage state V
high).
Program, instruction set or the data of carrying out above step can be stored in the memory storage 606 in processing circuitry 106 or in engine control system 900, and can be carried out or call by processor (CPU) 602.
Can carry out various changes and modification and not depart 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 (20)
1. the neutral gear position for sensing rotating shaft (108) and the sensing device of reverse gear position, described rotating shaft (108) can rotate or move linearly, in described rotating shaft (108), be fixedly installed vertically magnet (102) and ferromagnetic block (113), it is characterized in that described sensing device (104,106) comprising:
Be arranged on the sensing element (104) of rotating shaft (108) top, when rotating shaft (108) is in reverse gear or non-reversing gear when position, along with the rotation of rotating shaft (108), described sensing element (104) produces the first electrical signal of reaction or the second electrical signal of reaction;
Treatment circuit (106), corresponding to the first electrical signal of reaction and the second electrical signal of reaction, described treatment circuit (106) produces the first voltage signal or the second voltage signal;
Indicating circuit (508), corresponding to the first voltage signal and the second voltage signal, described indicating circuit (508) produces neutral gear position signal and reverse gear position signal.
2. sensing device according to claim 1, is characterized in that:
Described sensing device has a set of sensing element (104) and a set for the treatment of circuit (106).
3. sensing device according to claim 1, is characterized in that:
Described the first electrical signal of reaction and the second electrical signal of reaction are the electric signal that meets linear functional relation.
4. sensing device according to claim 3, is characterized in that:
Described the first electrical signal of reaction corresponding to described rotating shaft (108) in reverse gear position;
Described the second electrical signal of reaction corresponding to described rotating shaft (108) in non-reverse gear position.
5. sensing device according to claim 1, characterized by further comprising magnet (102):
Described magnet (102) is provided with ferromagnetic block (113), and described magnet (102) and ferromagnetic block (113) can rotate around it jointly along with the rotation of rotating shaft (108);
Described magnet (102) and ferromagnetic block (113) can be along with the rectilinear movement of rotating shaft (108) with its rectilinear movements.
6. sensing device according to claim 5, is characterized in that:
The length of described magnet (102) is greater than the length of described ferromagnetic block (113).
7. sensing device according to claim 5, is characterized in that:
When rotating shaft (108) is during in reverse gear position, described sensing element (104) and ferromagnetic block (113) are in rotating shaft (108) and axially go up identical position, thereby sense the first magnetic flux distribution that described magnet (102) provides;
When rotating shaft (108) is during in non-reverse gear position, described sensing element (104) and ferromagnetic block (113) are in the position of staggering in rotating shaft (108) axially, thereby described sensing element (104) senses the second magnetic flux distribution that described magnet (102) provides.
8. sensing device according to claim 6, is characterized in that:
When rotating shaft (108) is during in reverse gear position, described sensing element (104) and ferromagnetic block (113) be at the radially aligned of rotating shaft (108), thereby sense the first magnetic flux distribution that described magnet (102) provides.
9. sensing device according to claim 5, is characterized in that:
When rotating shaft (108) is during in non-reverse gear position, described sensing element (104) and ferromagnetic block (113) radially stagger rotating shaft (108), thereby described sensing element (104) senses the second magnetic flux distribution that described magnet (102) provides.
10. sensing device according to claim 1, is characterized in that:
Described sensing element (104) is Hall element.
11. 1 kinds of neutral gear positions for sensing rotating shaft (108) and the sensing system of reverse gear position, described rotating shaft (108) can rotate or move linearly, and it is characterized in that described sensing system comprises:
Be fixedly installed on magnet (102) and ferromagnetic block (113) in rotating shaft (108), described ferromagnetic block (113) is arranged on one end of described magnet (102); With
Be arranged on discretely the sensing element (104) of rotating shaft (108) top, when rotating shaft (108) is in reverse gear or non-reversing gear when position, along with the rotation of rotating shaft (108), described sensing element (104) produces the first electrical signal of reaction or the second electrical signal of reaction.
12. sensing systems according to claim 11, is characterized in that described sensing element (104) comprises;
Treatment circuit (106), the first electrical signal of reaction and the second electrical signal of reaction that produce corresponding to described sensing element (104), described treatment circuit (106) produces the first voltage signal or the second voltage signal;
Indicating circuit (508), corresponding to the first voltage signal and the second voltage signal, described indicating circuit (508) produces neutral gear position signal and reverse gear position signal.
13. sensing systems according to claim 11, is characterized in that:
Described sensing system has a set of sensing element (104) and a set for the treatment of circuit (106).
14. sensing systems according to claim 11, is characterized in that:
Described the first electrical signal of reaction and the second electrical signal of reaction are the electric signal that meets linear functional relation.
15. sensing systems according to claim 14, is characterized in that:
Described the first electrical signal of reaction corresponding to described rotating shaft (108) in reverse gear position;
Described the second electrical signal of reaction corresponding to described rotating shaft (108) in non-reverse gear position.
16. sensing systems according to claim 15, is characterized in that:
The length of described magnet (102) is greater than the length of described ferromagnetic block (113).
17. sensing systems according to claim 11, is characterized in that:
When rotating shaft (108) is during in reverse gear position, described sensing element (104) and ferromagnetic block (113) be at the radially aligned of rotating shaft (108), thereby sense the first magnetic flux distribution that described magnet (102) provides;
When rotating shaft (108) is during in non-reverse gear position, described sensing element (104) and ferromagnetic block (113) are in the position of staggering in rotating shaft (108) axially, thereby described sensing element (104) senses the second magnetic flux distribution that described magnet (102) provides.
18. sensing systems according to claim 17, is characterized in that:
When rotating shaft (108) is during in reverse gear position, described sensing element (104) and ferromagnetic block (113) be at the radially aligned of rotating shaft (108), thereby sense the first magnetic flux distribution that described magnet (102) provides.
19. sensing systems according to claim 11, is characterized in that:
When rotating shaft (108) is during in non-reverse gear position, described sensing element (104) and ferromagnetic block (113) radially stagger rotating shaft (108), thereby described sensing element (104) senses the second magnetic flux distribution that described magnet (102) provides.
20. sensing systems according to claim 11, is characterized in that:
Described sensing element (104) is Hall element.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320607922.XU CN203744910U (en) | 2013-09-27 | 2013-09-27 | Device for sensing angular position |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320607922.XU CN203744910U (en) | 2013-09-27 | 2013-09-27 | Device for sensing angular position |
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| Publication Number | Publication Date |
|---|---|
| CN203744910U true CN203744910U (en) | 2014-07-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201320607922.XU Expired - Lifetime CN203744910U (en) | 2013-09-27 | 2013-09-27 | Device for sensing angular position |
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| CN (1) | CN203744910U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104515461A (en) * | 2013-09-27 | 2015-04-15 | 泰科电子(上海)有限公司 | Angle position sensing apparatus and method |
| CN105526852A (en) * | 2014-09-30 | 2016-04-27 | 泰科电子(上海)有限公司 | Neutral-gear reverse-gear position sensing sensor and system thereof |
-
2013
- 2013-09-27 CN CN201320607922.XU patent/CN203744910U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104515461A (en) * | 2013-09-27 | 2015-04-15 | 泰科电子(上海)有限公司 | Angle position sensing apparatus and method |
| CN104515461B (en) * | 2013-09-27 | 2017-11-10 | 泰科电子(上海)有限公司 | Angle position sensing device further and method |
| CN105526852A (en) * | 2014-09-30 | 2016-04-27 | 泰科电子(上海)有限公司 | Neutral-gear reverse-gear position sensing sensor and system thereof |
| CN105526852B (en) * | 2014-09-30 | 2019-07-12 | 泰科电子(上海)有限公司 | Neutral gear is reversed gear position sensing sensor and system |
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Address after: 200131 Shanghai City, Pudong New Area city of Shanghai Waigaoqiao Free Trade Zone Hedan Road No. 142 in the first layer of the whole site Patentee after: Tyco Electronics (Shanghai) Co.,Ltd. Patentee after: TE CONNECTIVITY GERMANY GmbH Address before: 200131 Shanghai City, Pudong New Area city of Shanghai Waigaoqiao Free Trade Zone Hedan Road No. 142 in the first layer of the whole site Patentee before: Tyco Electronics (Shanghai) Co.,Ltd. Patentee before: TYCO ELECTRONICS AMP Co.,Ltd. |
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Granted publication date: 20140730 |