CN205207648U - Sensor system - Google Patents
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- CN205207648U CN205207648U CN201521020875.4U CN201521020875U CN205207648U CN 205207648 U CN205207648 U CN 205207648U CN 201521020875 U CN201521020875 U CN 201521020875U CN 205207648 U CN205207648 U CN 205207648U
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Abstract
The utility model provides a sensor system for sensing derailleur selector shaft's neutral position with reverse gear the position, sensor system includes sensor and magnet device, and magnet device sets up on the selector shaft of derailleur, for the neutral gear magnet and the magnet that reverses gear, neutral gear magnet produces corresponding selector shaft's the neutral position and the magnetic field signal of the position of reversing gear respectively with the magnet that reverses gear, neutral position's magnetic field signal has opposite distribution direction with the magnetic field signal of the position of reversing gear, the sensor includes neutral gear sensing circuit and reverses gear the sensing circuit, is equipped with sensing element separately, and sensing element sensing neutral gear magnet and the magnetic field signal that the magnet that reverses gear moved produce the signal of the reaction neutral position and the position of reversing gear respectively. The utility model discloses sensor system adopts a plurality of switch halls response unit as sensing element, two magnet device's of independent sensing removal, and two blocks of magnet that magnetism is less and magnetic field direction is opposite are the overall arrangement of T type, have still reduceed the interference of magnet device to other electron device outside fulfilling feeling surveys and requires.
Description
Technical field
The utility model relates to field of automobile control, and particularly a kind of neutral based on Hall switch inductor/reverse gear position transducer.
Background technique
Current position sensor has and is widely used in each industrial field, such as automotive control system.Owing to needing to judge neutral gear position and reverse gear position to make ECU (ElectronicControlUnit in start stop system, electronic control unit, also known as " car running computer ", " vehicle-mounted computer " etc.) engine misses still operate when judging current state is will be in advance or reverse gear simultaneously, so need that relevant neutral/reverse gear position transducer.These sensors are installed on gearbox, and will sense the magnet that is installed in shifting shaft rotating shaft, is rotated when entering to keep off by shifting shaft and block selecting time straight line (or rotation) moving belt moving magnet, make sensor sensing gear.
In the prior art, on shifting shaft, how to arrange a monoblock magnet to reflect the motion of shifting shaft, inductor many employings 3D hall sensor senses this magnet.Adopt during the magnet of monoblock and need the very high all gears that could cover shifting shaft of the magnetic of magnet own, but this ferromagnetic magnet can have an impact to other periphery electrical apparatus element.
Summary of the invention
The utility model is for solving above technical problem, and provide a kind of and adopt switch Hall to be sense cell, and use two blocks of magnet as the sensing system of magnet arrangement, concrete technological scheme is as follows:
A kind of sensing system, for sensing the neutral gear position of shift of transmission axle and position of reversing gear; Described sensing system comprises sensor and magnet arrangement, and described magnet arrangement is arranged on the shifting shaft of speed changer;
Described magnet arrangement is neutral magnet and the magnet that reverses gear; Described neutral magnet produces the field signal of the neutral gear position of corresponding shifting shaft, described in the magnet that reverses gear produce the field signal of the position of reversing gear of corresponding shifting shaft; The field signal of described neutral gear position has contrary distribution arrangement with the field signal of described position of reversing gear;
Described sensor comprises:
Neutral sense line, is wherein provided with sense cell, and described sense cell senses the field signal of described neutral magnet movement, produces the signal of reaction neutral gear position;
To reverse gear sense line, be wherein provided with sense cell, the field signal of magnet movement of reversing gear described in described sense cell sensing, produce reaction and to reverse gear the signal of position.
Sensing system as previously described, described neutral magnet is arranged along the axial direction of described shifting shaft, described in reverse gear the axis cross setting of magnet along described shifting shaft.
Sensing system as previously described, described neutral magnet is elongated shape with the magnet that reverses gear.
Sensing system as previously described, the width of described neutral magnet is 3 ~ 7mm, is 3 ~ 5mm or 4 ~ 6mm especially.
Sensing system as previously described, the width of described neutral magnet is specifically as follows 3mm, 3.5mm, 4mm, 4.5mm or 5mm.
Sensing system as previously described, described neutral magnet and magnet interval of reversing gear are arranged.
Sensing system as previously described, also comprises magnet carrier;
Described neutral magnet is fixedly installed in described magnet carrier with the magnet that reverses gear, and forms integral piece.
Sensing system as previously described, described neutral sense line is two-way, every road neutral sense line is provided with a sense cell, two sense cells synchronously sense the motion of described neutral magnet, and produce two paths of signals respectively, wherein a road signal is neutral gear position signal, and another road signal is neutral gear position redundant signals;
Described sense line of reversing gear is two-way, every road sense line of reversing gear is provided with a sense cell, the motion of the magnet that reverses gear described in two sense cells synchronously sense, and produces two paths of signals respectively, wherein a road signal is the position signal that reverses gear, and another road signal is the position redundant signals that reverses gear.
Sensing system as previously described, each neutral sense line and sense line of reversing gear include processing circuit, and processing circuit connects described sense cell, for receiving the output value W of the changes of magnetic field that described sense cell sensing magnet arrangement obtains.
Sensing system as previously described, described processing circuit comprises storage and processor;
Described storage, measures obtain for storing described sense cell, be in the analog output value W of each gear positions corresponding to described shifting shaft in simulator program
0;
Described processor, be provided with two input ends, one end connects described storage, receives described analog output value W
0; Another input end connects described sense cell, receives the output value W of sense cell; Described processor compares output value W and described analog output value W
0, and send the position signal that described sense cell records, or non-location signal.
Sensing system as previously described, the real-time output value W of two sense cells in described two-way neutral sense line is less than the analog output value W of corresponding neutral gear position
ntime, the described processing circuit in described neutral sense line is emitted in gear position signal.
Sensing system as previously described, the real-time output value W of two sense cells in described two-way neutral sense line is more than or equal to the analog output value W of corresponding neutral gear position
ntime, the described processing circuit in described neutral sense line sends neutral gear position signal.
Sensing system as previously described, when described shifting shaft enters neutral and enters the scope of reversing gear and do not enter to keep off, described two-way neutral sense line sends neutral gear position signal; Described sense line of reversing gear sends the position signal that reverses gear;
Described neutral gear position signal priority, in the described position signal that reverses gear, is designated as neutral gear position.
Sensing system as previously described, when described two-way reverses gear the real-time output value W of described two sense cells in sense line and the analog output value W of corresponding position of reversing gear
rduring for certain difference or certain proportion, described in the described processing circuit reversed gear in sense line send the position signal that reverses gear in advance.
Sensing system as previously described, described neutral gear position signal and neutral gear position redundant signals form one group of complementary signal pair;
The described position signal that reverses gear forms one group of complementary signal pair with the position redundant signals that reverses gear.
Sensing system as previously described, the level of described neutral gear position signal and neutral gear position redundant signals is contrary: when neutral gear position signal is high level, and neutral gear position redundant signals is low level; When neutral gear position signal is low level, neutral gear position redundant signals is high level.
Sensing system as previously described, described in the position signal that reverses gear contrary with the level of position redundant signals of reversing gear: when the position signal that reverses gear is high level, the position redundant signals that reverses gear is low level; When the position signal that reverses gear is low level, the position redundant signals that reverses gear is high level.
Sensing system as previously described, described sense cell is switch Hall element, and described its operating voltage of switch Hall element is 5V-12V.
Sensing system as previously described, the neutral gear position of the corresponding whole shift range of two sense cells in described two-way neutral sense line is arranged; And if only if when shifting shaft enters neutral shift range, and described two-way neutral sense line sends neutral gear position signal and neutral gear position redundant signals.
Sensing system as previously described, described two-way two sense cell correspondences of reversing gear in sense line reverse gear position arrange; And if only if, and shifting shaft enters when reversing gear scope, and described two-way sense line of reversing gear sends reverse gear position signal and the position redundant signals that reverses gear.
Sensing system as previously described, the gearbox that described sensor is applicable to is manual-gear vehicle, and gear is that 8 gears are arranged, and 3, every side, 6 advance gear point both sides is symmetrical arranged along neutral gear, and the gear that reverses gear is asymmetric is located at neutral gear side.
Sensing system as previously described, the gearbox that described sensor is applicable to is manual-gear vehicle, and wherein, the gear that reverses gear axially is positioned at all gear one end along shifting shaft, and arranges at shifting shaft axially spaced-apart with advance gear.
Sensing system as previously described, described two-way neutral sense line is separate; Described two-way sense line of reversing gear is separate.
Described sensor is integrated part.
The utility model sensing system adopts 4 switch Halls induction unit as sensing device, and independent sensing two becomes T-shaped layouts and the contrary magnet arrangement of magnetic direction senses the movement of shifting shaft, and produces two-way independently position signal.The operating voltage of switch Hall is 5V-12V, and voltage range is wider, does not need additional voltage stabilizer; And the volume of switch Hall sense cell is less, only has 1/4th of 3D hall sensing element, more save the space of automobile gearbox; Adopt two pieces of magnetic less and the T-shaped layout of magnetic direction is contrary magnet, meet sensing require outside also reduce the interference of magnet arrangement to other electronic device.
Accompanying drawing explanation
Fig. 1 is the perspective view of the utility model sensing system;
Fig. 2 is the electrical block diagram of the utility model sensing system;
Fig. 3 is the internal structure schematic diagram of processor in the utility model sensing system;
Fig. 4 is the utility model shifting shaft mobile alignment schematic diagram;
Fig. 5 is that the signal of the utility model neutral gear position signal NPS and neutral gear position redundant signals NPSK exports schematic diagram;
Fig. 6 be the utility model reverse gear position signal RPS and reverse gear position redundant signals RPSK signal export schematic diagram; And
Fig. 7 is that the magnetic field value of the utility model slender type magnet arrangement and roomy type magnet arrangement outputs signal comparison diagram.
Embodiment
Below with reference to the accompanying drawing forming this specification part, various embodiment of the present utility model is described.It should be understood that, although use the term representing direction in the utility model, such as "front", "rear", " on ", D score, "left", "right" etc. describe various example features of the present utility model and element, but use these terms just object for convenience of description at this, determine based on the example orientations shown in accompanying drawing.Because embodiment disclosed in the utility model can be arranged according to different directions, so these represent that the term in direction just should not regard as restriction as explanation.In the conceived case, the identical or similar reference character used in the utility model refers to identical parts.
Fig. 1 is the perspective view of the utility model sensing system.
As shown in Figure 1, sensing system includes the magnet arrangement 105 of corresponding automobile gearbox shifting shaft 101 motion, and the sensor 100 of sensing magnet arrangement motion, sensor 100 comprises two-way neutral gear position signal sensing circuit and two-way and to reverse gear position signal sense line.Magnet arrangement 105 to be arranged on shifting shaft 101 and to move with shifting shaft 101.The straight line motion (in figure arrow A A ' direction) that shifting shaft 101 can do back and forth along axis H-H ' or come and go, the rotary motion (in figure arrow B B ' direction) also can done back and forth with axis H-H ' for the center of circle or come and go along the transverse direction of axis B.
Magnet arrangement 105 two blocks of magnet, comprise for reflecting that shifting shaft 101 is at the neutral magnet 1052 of neutral gear position with for reflecting the reverse gear magnet 1053 of shifting shaft 101 in position of reversing gear respectively, neutral magnet 1052 and the T-shaped layout of magnet 1053 of reversing gear: neutral magnet 1052 is arranged along the axial direction of shifting shaft 101, reverse gear magnet 1053 for circular arc, along the axis cross setting of shifting shaft 101, and neutral magnet 1052 is contrary with the pole orientation of the magnet 1053 that reverses gear, the N pole of neutral magnet 1052 is upwards, S is extremely downward, the N of the magnet 1053 that reverses gear extremely downwards, S pole upwards; Equally, two blocks of magnet separately magnetic arrange on the contrary and also can reach effect same.The length of neutral magnet 1052 is enough to cover in the effective search coverage of length of shifting shaft 101 rectilinear movement, the radian span of magnet 1053 of reversing gear is enough to cover in shifting shaft 101 effective search coverage in rotary moving, and neutral magnet 1052 and the magnet 1053 that reverses gear are followed shifting shaft 101 and done straight line and rotary motion.
Two-way neutral sense line and to reverse gear sense line, is respectively two-way neutral sense line (112,114) and two-way and reverses gear sense line (116,118).Sense line includes multiple sense cell and provides sensing signal separately, the sense cell that sensing neutral magnet 1052 moves is respectively switch Hall sense cell side by side: neutral gear position signal sensing element 104 and neutral gear position redundant signals sensing element 104 ', be arranged on the top (or neighbouring position) of neutral magnet 1052, when neutral magnet 1052 moves to the region that neutral gear position signal sensing element 104 and neutral gear position redundant signals sensing element 104 ' sense, and sense the change in the magnetic field (or magnetic flux) of neutral magnet 1052, corresponding data are picked up at special time, and magnetic induction intensity (magnetic induction line) is when reaching certain value, neutral gear position signal sensing element 104 and neutral gear position redundant signals sensing element 104 ' can send neutral gear position signal (NPS) and neutral gear position redundant signals (NPSK) respectively to neutral sense line 112 and neutral redundancy sense line 114.In like manner, the reverse gear sense cell of magnet 1052 of sensing is respectively switch Hall sense cell side by side: reverse gear position signal sensing element 106 and the position redundant signals sensing element 106 ' that reverses gear, be arranged on the top (or neighbouring position) of the magnet 1053 that reverses gear simultaneously, when the magnet 1053 that reverses gear moves to the sensing region of reverse gear position signal sensing element 106 and the position redundant signals sensing element 106 ' that reverses gear, and sense the change in the magnetic field (or magnetic flux) of the magnet 1053 that reverses gear, corresponding data are picked up at special time, and magnetic induction intensity (magnetic induction line) is when reaching certain value, the position signal sensing element 106 that reverses gear can send the position signal that reverses gear (RPS) and the position redundant signals (RPSK) that reverses gear to sense line 116 of reversing gear with redundancy sense line 118 of reversing gear with the position redundant signals sensing element 106 ' that reverses gear.
What adopt is switch Hall sense cell to sensing element of the present utility model (neutral gear position signal sensing element 104 and neutral gear position redundant signals sensing element 104 ', reverse gear position signal sensing element 106 and the position redundant signals sensing element 106 ' that reverses gear), the operating voltage of switch Hall sense cell is 5V-12V, voltage range is wider, do not need additional voltage stabilizer, save cost; And the volume of switch Hall sense cell is less, only has 1/4th of 3D hall sensing element, more save the space of automobile gearbox.
In FIG, neutral magnet 1052 of the present utility model and the magnet 1053 that reverses gear, neutral magnet 1052 and the magnet 1053 that reverses gear, leave interval between the two and T-shaped layout, be arranged in magnet carrier 160 and form integral piece.Wherein, neutral magnet 1052 is arranged along the axial direction of shifting shaft 101, reverse gear magnet 1053 for circular arc, along the axis cross setting of shifting shaft 101, and neutral magnet 1052 is contrary with the pole orientation of the magnet 1053 that reverses gear, the Magnetic field distribution direction that this set makes neutral magnet 1052 and the magnet 1053 that reverses gear produce also is contrary.The design that this one-tenth magnetic direction staggers makes the distribution of the field signal of neutral magnet 1052 and the magnet 1053 that reverses gear to superpose in one direction, neutral sensing element and reverse gear sensing element each self-inductance measurement neutral magnet 1052 and the magnet 1053 that reverses gear, the magnetic field of two magnet can not be disturbed mutually.In addition, the switch Hall inductor that the utility model uses needs in the obvious Magnetic field distribution of jump position magnetic field value size variation, if magnetic field superposition can make jump position magnetic intensity strengthen, magnetic field value size variation is not obvious, the sensitivity of the sensing of sensing element can reduce, and specifically sees Fig. 7.
Fig. 2 is the electrical block diagram of the utility model sensing system;
Be illustrated in figure 2 the two-way neutral sense line of sensing system and the basic circuit structure of sense line of reversing gear, neutral sense line 112 and neutral redundancy sense line 114 receive the neutral gear position signal of neutral gear position signal sensing element 104 and the size generation of neutral gear position redundant signals sensing element 104 ' sensing magnetic field, the neutral gear position signal of sensing element sensing is linear analogue signal, sense line is provided with processing circuit 130 (see Fig. 3) and carries out the Treatment Analysis such as digital-to-analog conversion to signal, neutral gear position signal NPS and the neutral gear position redundant signals NPSK of digital form Treatment Analysis obtained send to protective circuit 120, the neutral gear position signal NPS handled well and neutral gear position redundant signals NPSK starts to automotive control system by protective circuit 120.
Sense line of reversing gear 116 is identical with neutral redundancy sense line 114 with neutral sense line neutral sense line 112 with the signal processing mode of redundancy sense line 118 of reversing gear.Wherein the internal structure of processing circuit 130 and handling process are specifically shown in Fig. 3.
Fig. 3 is the internal structure schematic diagram of processor in the utility model sensing system;
Neutral sense line 112 and neutral redundancy sense line 114, sense line of reversing gear 116 and this four routes road of redundancy sense line 118 of reversing gear are all independent operatings, are all provided with identical processor (process circuit) structure in every route road.Be explained for neutral sense line 112, as shown in Figure 3: in processing circuit 130, be provided with storage 131, processor 132, A/D change-over circuit 134 etc.Be previously stored with sense cell in storage 131 to measure in simulator program and obtain, analog output value W when being in neutral gear position corresponding to shifting shaft 101
0(threshold value of corresponding magnetic field size); Processor 132 is provided with two input ends: input end 133 and input end 135, and an output terminal 137.Input end 133 connected storage 131, receives analog output value W
0; Input end 135 connects the output value W that A/D change-over circuit 134, A/D change-over circuit 134 receives sense cell 104, and converts the output value W of analogue signal to digital signal that processor 132 can identify use.
The output value W that processor 132 is more real-time and analog output value W
0, when real-time output value W exceedes the analog output value W of neutral gear position
0time, processor 132 sends the position signal (high level signal) of neutral by output terminal 137; Be less than as real-time output value W or be no more than this analog output value W
0time, processor 132 sends non-NULL gear position signal (low level signal) (specifically seeing Fig. 5-6).
In fact; neutral redundancy sense line 114, sense line of reversing gear 116 adopt the mode identical with neutral sense line 112 with redundancy sense line 118 of reversing gear in the processing mode of signal; signal all outputs in protective circuit 120 by its respective output terminal (147,157,167), is sent to automotive control system ECU by protective circuit 120.Wherein, the concrete grammar of processor 132 processing signals can also cited application number be the method for processor processing signals in the Chinese model utility of 201420562060.8.
Fig. 4 is the utility model shifting shaft mobile alignment schematic diagram.
As shown in Figure 4, automobile gearbox comprises the R gear that reverses gear, forward gear 1,2,3,4,5,6 keeps off and neutral N gear has 8 gears altogether (in fact, the setting of other more gears also can adopt sensing system of the present utility model), wherein neutral N gear moves along path 211 in centre, R, 1,3,5 gears in neutral side, 2,4,6 gears are at neutral opposite side and keep off aliging with 1,3,5.The gear level stirring automobile makes shifting shaft 101 take exercises along the circuit in figure shown in arrow between each gear, can be decomposed in the plane along moving back and forth of the A direction of arrow and moving back and forth of the B direction of arrow.
In figure, dash area 221 represents neutral gear position scope, such as, scope when shifting shaft 101 rotational steps is ± 5 °; Dash area 221 both sides are position range of putting into gear, and represent that shifting shaft 101 rotates to and reverse gear on R or advance gear, such as, scope when shifting shaft 101 rotational steps is ± 20 °.Dash area 222 represents the axial position that reverses gear, and represents that shifting shaft 101 is linearly moved to the side of the gear that reverses gear, comprises the neutral gear position that position of reversing gear is adjacent with it; Be forward gear axial position on the right side of dash area 222, represent that shifting shaft 101 is linearly moved to the side of forward gear gear.
Neutral gear position signal sensing element 104 and neutral gear position redundant signals sensing element 104 ' can sensing gearbox shifting axle 101 in the position of each gear.Laterally gear scope of putting into gear is entered when shifting shaft 101 rotates, namely, when gear R or forward gear gear (comprising gear 1, gear 2, gear 3, gear 4, gear 5 and gear 6), neutral gear position signal sensing element 104 and neutral gear position redundant signals sensing element 104 ' produce non-NULL gear position signal; When shifting shaft 101 laterally enters neutral gear position scope (shadow region 221), neutral gear position signal sensing element 104 and neutral gear position redundant signals sensing element 104 ' produce neutral gear position signal NPS and neutral gear position redundant signals NPSK.
When shifting shaft 101 enters the axial position that reverses gear (shadow region 222) reversing gear and hold with A direction of arrow straight line motion along axis 211, the position signal sensing element 106 that reverses gear produces with the position redundant signals sensing element 106 ' that reverses gear the position signal RPS and the position redundant signals RPSK that reverses gear that reverses gear, when shifting shaft 101 rectilinear movement enters the forward gear axial position of forward gear side: comprise gear 1, gear 2, gear 3, gear 4, gear 5, gear 6 and the adjacent neutral N1 of homonymy, neutral N2 and neutral N3, the position signal sensing element 106 that reverses gear produces the non-position signal that reverses gear with the position redundant signals sensing element 106 ' that reverses gear.
Especially, the sensing of automotive control system ECU to position of reversing gear needs in advance anticipation, and before shifting shaft 101 being arrived reverse gear, so that automotive control system needs hydraulic control system, the oil circuit that will reverse gear is switched on, and driving wheel reverses, and realization is reversed gear traveling.Sense line of reversing gear 116 and the storage reversed gear in redundancy sense line 118 store the position analog output value W that reverses gear
r, as real-time output value W and the analog output value W of position of reversing gear
rduring for certain difference or certain proportion (such as 1/3), namely the R ' in Fig. 4 on neutral movement line 211 puts position, described sense line 116 of reversing gear sends the position signal that reverses gear (or the position signal that reverses gear in advance) in advance with redundancy sense line 118 of reversing gear and can make a response in advance to ECU, ECU.Because when shifting shaft 101 move to reverse gear R mono-side position time, this route does not have except the R that reverses gear other gears can move to, 1 gear can certainly be turned back to along neutral gear position or 2 gears are put, or rest on neutral.In fact, judge whether shifting shaft 101 really enters when reversing gear position or rest on neutral gear position, judgment mode is: namely when neutral sense line (or neutral redundancy sense line) is shown as non-NULL gear position signal (entering to keep off position signal), and sense line of reversing gear (or redundancy sense line of reversing gear) is shown as when reversing gear position signal RPS (or RPSK), system can judge that shifting shaft 101 only can be in the position R that reverses gear.Control automobile is carried out car backing operation by automotive control system ECU.
If rest on neutral gear position (position that namely in figure, dash area 222 and dash area 211 intersect), sense line of now reversing gear (or redundancy sense line of reversing gear) is shown as the position signal RPS (or RPSK) that reverses gear, neutral sense line (or neutral redundancy sense line) is shown as neutral gear position signal NPS (or NPSK), system judges that neutral gear position signal NPS (or NPSK) has precedence over the position signal RPS (or RPSK) that reverses gear, and sentences and is in neutral gear position.
Fig. 5 is that the signal of the utility model neutral gear position signal NPS and neutral gear position redundant signals NPSK exports schematic diagram.
Concrete, as shown in Figure 5, ordinate X and X ' represents the displacement of shifting shaft 101, and abscissa Y represents the level V of output signal, and figure middle polyline 201 represents neutral gear position signal NPS, and broken line 202 represents neutral gear position redundant signals NPSK.Because neutral gear position signal sensing element 104 and neutral gear position redundant signals sensing element 104 ' independently sense neutral magnet 1052 shifting shaft 101 from two angles, the signal level that corresponding neutral sense line 112 and neutral redundancy sense line 114 produce also is different.In figure, dash area 221 (same to Fig. 4) represents that shifting shaft 101 is at neutral gear position.When shifting shaft 101 on the upside of dash area 221 gear, do between neutral gear position and downside gear with the moving back and forth of the B direction of arrow time, neutral gear position signal sensing element 104 and neutral gear position redundant signals sensing element 104 ', as switch Hall inductor, produce the low and high level signal representing neutral respectively.Concrete, neutral gear position signal NPS201, is set to low level L at non-NULL gear, is high level H at the neutral gear position of dash area 221; Neutral gear position redundant signals NPSK202, is set to high level H at non-NULL gear, is low level L at the neutral gear position of dash area 221.
Fig. 6 be the utility model reverse gear position signal RPS and reverse gear position redundant signals RPSK signal export schematic diagram.
As shown in Figure 6, abscissa X and X ' represents the displacement of shifting shaft 101, and ordinate Y represents the level V of output signal, and figure middle polyline 203 represents the position signal RPS that reverses gear, and broken line 204 represents the position redundant signals RPSK that reverses gear.Because reverse gear, position signal sensing element 106 and the position redundant signals sensing element 106 ' that reverses gear are the magnet 1053 that reverses gear independently sensed from two angles shifting shaft 101, so the signal level of reverse gear accordingly sense line 116 and redundancy sense line 118 generation of reversing gear also is different.In figure, dash area 222 (same to Fig. 4) represents that shifting shaft 101 is in position of reversing gear.When shifting shaft 101 reverse gear to do between position and forward gear position with the moving back and forth of the A direction of arrow time, sense line of reversing gear 116 and redundancy sense line 118 of reversing gear produce the low and high level signal producing respectively and represent and reverse gear: reverse gear position signal RPS203, being low level L in non-position of reversing gear, is high level H in the position of reversing gear of dash area 222; Reverse gear position redundant signals NPSK204, is high level H in non-position of reversing gear, and is low level L in the position of reversing gear of dash area 222.
In fact: two the neutral inducting cells (as: neutral gear position signal sensing element 104 and neutral gear position redundant signals sensing element 104 ') in two-way neutral sense line are positioned at the central authorities of whole shift range, all have magnetic field induction to all gears.When these two neutral inducting cells normally work, and if only if when shifting shaft enters neutral shift range, and these two neutral sense line send neutral gear position signal NPS and neutral gear position redundant signals NPSK.
Before generation signal, the analog signal transmission of the reflection neutral gear position that the motion of neutral gear position signal sensing element 104 and the separate sensing neutral magnet 1052 of neutral gear position redundant signals sensing element 104 ' produces is to the processor in sense line, voltage signal (or pwm signal) is become to export through the flow processing shown in Fig. 3, i.e. neutral gear position signal NPS and neutral gear position redundant signals NPSK.
According in a preferred embodiment of the present utility model, the neutral gear position signal NPS of two-way independently in neutral sense line and neutral gear position redundant signals NPSK forms one group of complementary signal pair.The two paths of signals that automotive control system ECU receives redundancy complementation can form diagnosis.The reflection that the motion that position signal sensing element 106 and the separate sensing of the position redundant signals sensing element 106 ' that reverses gear reverse gear magnet 1053 of reversing gear produces reverses gear the analog signal transmission of position to corresponding processor, treated device process changes into voltage signal (or pwm signal output), and namely reverse gear position signal RPS and the position redundant signals RPSK that reverses gear.According in a preferred embodiment of the present utility model, the position signal RPS and the position redundant signals RPSK that reverses gear that reverses gear that two-way independently reverses gear in sense line forms one group of complementary signal pair, and the two paths of signals that automotive control system ECU receives redundancy complementation forms condition diagnosing.
Fig. 7 is that the magnetic field value of the utility model slender type magnet arrangement and roomy type magnet arrangement outputs signal comparison diagram.
In FIG, neutral magnet 1052 and the magnet 1053 that reverses gear are all elongated shape, and neutral magnet 1052 is along the axial direction growth strip of shifting shaft 101, and reverse gear the strip of magnet 1053 along the axis horizontal direction camber of shifting shaft 101.Wherein, the width of neutral magnet can be 3 ~ 7mm, and be 3 ~ 5mm or 4 ~ 6mm especially, according to the service condition of different client, width is specifically as follows 3mm, 3.5mm, 4mm, 4.5mm or 5mm etc.These two kinds elongated its magnetic intensities of strip magnet are concentrated, and this can not have an impact to other periphery electrical apparatus element, simultaneously because its magnetic intensity concentrates on narrower angle of swing, exceed its magnetic intensity of this angle obviously to decline, signal saltus step is obvious, senses sensitive, specifically sees Fig. 7.
Figure 7 shows that the comparison diagram that the magnetic field value that the wider magnet (being called for short " wide magnet ") of magnetic field value distribution that magnet arrangement 105 (for neutral magnet 1052) of the present utility model produces and size produces distributes, abscissa represents angle of swing, and ordinate represents magnetic field value.In figure, upside curve 710 is the magnetic field value distribution of wide magnet, and lower curve 720 is the magnetic field value distribution of neutral magnet 1052.The magnetic field value distribution curve 710 of wide magnet is because magnet width is comparatively large, magnetic field distribution is comparatively wide, and its curve distribution is also comparatively disperseed, and the slope of curve is less; The magnetic field value distribution curve 720 of neutral magnet 1052 because of magnet width less, it obviously weakens in the magnetic field, both sides that angle of swing is larger, therefore its curve distribution is comparatively concentrated, and the slope of curve is larger.
The utility model uses and utilizes switch Hall inductor to sense magnetic field value, relative to the angle in 3D hall sensor sensing magnetic field, switch Hall sensing be the size of magnetic field actual value, namely when magnet rotate to several angle magnetic field value be greater than or less than certain threshold value time, sensor sends sensing signal, thus for the change of angle of swing, the larger sensing of change of magnetic field value is sensitiveer.Be 5 ° with the angle of swing in scheming to illustrate for trip point, when rotating to 5 ° from 4.9 °, the signal value variable quantity of wide magnet is H1, the magnetic field value variable quantity of neutral magnet 1052 is H2, because the magnetic field value of neutral magnet 1052 changes greatly, so H2 > H1, for switch Hall inductor, this larger magnetic field value change more easily senses, so width less neutral magnet 1052 magnet larger than width, relative to 3D hall sensor, is more adapted to switch Hall inductor.
Although will be described the utility model with reference to the embodiment shown in accompanying drawing, but be to be understood that, under the spirit and scope not deviating from the utility model instruction and background, sensing system of the present utility model can have many versions, the different layouts of such as separated type magnet.Art technology those of ordinary skill also has different modes to change embodiment disclosed in the utility model by recognizing, all falls in the spirit and scope of the utility model and claim.
Claims (26)
1. a sensing system, for sensing the neutral gear position of shift of transmission axle (101) and position of reversing gear; Described sensing system comprises sensor (100) and magnet arrangement (105), and described magnet arrangement (105) is arranged on the shifting shaft (101) of speed changer;
It is characterized in that:
Described magnet arrangement (105) is neutral magnet (1052) and the magnet that reverses gear (1053); Described neutral magnet (1052) produces the field signal of the neutral gear position of corresponding shifting shaft (101), described in the magnet (1053) that reverses gear produce the field signal of the position of reversing gear of corresponding shifting shaft (101); The field signal of described neutral gear position has contrary distribution arrangement with the field signal of described position of reversing gear;
Described sensor (100) comprising:
Neutral sense line (112,114), is wherein provided with sense cell, and described sense cell (104,104 ') senses the field signal that described neutral magnet (1052) is moved, and produces the signal of reaction neutral gear position;
Sense line of reversing gear (116,118), is wherein provided with sense cell, the field signal that the magnet (1053) that reverses gear described in described sense cell (106,106 ') sensing moves, and produces the signal reacting position of reversing gear.
2. sensing system as claimed in claim 1, is characterized in that:
Described neutral magnet (1052) is arranged along the axial direction of described shifting shaft (101), described in reverse gear the axis cross setting of magnet (1053) along described shifting shaft (101).
3. sensing system as claimed in claim 1, is characterized in that:
Described neutral magnet (1052) with reverse gear magnet (1053) in elongated shape.
4. sensing system as claimed in claim 3, is characterized in that:
The width of described neutral magnet (1052) is 3 ~ 7mm.
5. sensing system as claimed in claim 4, is characterized in that:
The width of described neutral magnet (1052) is 3 ~ 5mm or 4 ~ 6mm.
6. sensing system as claimed in claim 5, is characterized in that:
The width of described neutral magnet (1052) is 3mm, 3.5mm, 4mm, 4.5mm or 5mm.
7. sensing system as claimed in claim 1, is characterized in that:
Described neutral magnet (1052) and the magnet that reverses gear (1053) interval are arranged.
8. sensing system as claimed in claim 1, is characterized in that:
Also comprise magnet carrier (160);
Described neutral magnet (1052) is fixedly installed in described magnet carrier (160) with the magnet (1053) that reverses gear, and forms integral piece.
9. sensing system as claimed in claim 1, is characterized in that:
Described neutral sense line (112,114) is two-way, every road neutral sense line is provided with a sense cell, two sense cells (104,104 ') synchronously sense the motion of described neutral magnet (1052), and produce two paths of signals respectively, wherein a road signal is neutral gear position signal (NPS), and another road signal is neutral gear position redundant signals (NPSK);
Described sense line of reversing gear (116,118) is two-way, every road sense line of reversing gear is provided with a sense cell, two sense cells (106,106 ') are synchronously reversed gear described in sensing the motion of magnet (1053), and produce two paths of signals respectively, wherein a road signal is the position signal that reverses gear (RPS), and another road signal is the position redundant signals (RPSK) that reverses gear.
10. sensing system as claimed in claim 9, it is characterized in that each neutral sense line (112,114) and sense line of reversing gear (116,118) include processing circuit (130), processing circuit (130) connects described sense cell (104,104 ', 106,106 '), for receiving the output value W of the changes of magnetic field that described sense cell (104,104 ', 106,106 ') sensing magnet arrangement (1052,1053) obtains.
11. sensing systems as claimed in claim 10, is characterized in that:
Described processing circuit (130) comprises storage (131) and processor (132);
Described storage (131), to measure in simulator program obtain for storing described sense cell (104,104 ', 106,106 '), be in the analog output value W of each gear positions corresponding to described shifting shaft (101)
0;
Described processor (132), is provided with two input ends, and one end connects described storage (132), receives described analog output value W
0; Another input end connects described sense cell (104,104 ', 106,106 '), receives the output value W of sense cell (104,104 ', 106,106 ');
Described processor (132) compares output value W and described analog output value W
0, and send the position signal that described sense cell (104,104 ', 106,106 ') records, or non-location signal.
12. sensing systems as claimed in claim 11, is characterized in that:
The real-time output value W of two sense cells (104,104 ') in described two-way neutral sense line (112,114) is less than the analog output value W of corresponding neutral gear position
ntime, the described processing circuit (130) in described neutral sense line (112,114) is emitted in gear position signal.
13. sensing systems as claimed in claim 11, is characterized in that:
The real-time output value W of two sense cells (104,104 ') in described two-way neutral sense line (112,114) is more than or equal to the analog output value W of corresponding neutral gear position
ntime, the described processing circuit (130) in described neutral sense line (112,114) sends neutral gear position signal.
14. sensing systems as claimed in claim 11, is characterized in that:
When described shifting shaft (101) enters neutral and enters the scope of reversing gear and do not enter to keep off, described two-way neutral sense line (112,114) sends neutral gear position signal; Described sense line of reversing gear (116,118) sends the position signal that reverses gear;
Described neutral gear position signal priority, in the described position signal that reverses gear, is designated as neutral gear position.
15. sensing systems as claimed in claim 11, is characterized in that:
The real-time output value W of described two sense cells (106,106 ') reversed gear in sense line (116,118) when described two-way and the analog output value W of corresponding position of reversing gear
rduring for certain difference or certain proportion, described in the described processing circuit (130) reversed gear in sense line (116,118) send the position signal that reverses gear in advance.
16. sensing systems as claimed in claim 9, is characterized in that:
Described neutral gear position signal (NPS) and neutral gear position redundant signals (NPSK) form one group of complementary signal pair;
The described position signal that reverses gear (RPS) and the position redundant signals (RPSK) that reverses gear form one group of complementary signal pair.
17. position sensor systems as claimed in claim 9, is characterized in that:
Described two-way neutral sense line is separate;
Described two-way sense line of reversing gear is separate.
18. sensing systems as claimed in claim 16, is characterized in that:
The level of described neutral gear position signal (NPS) and neutral gear position redundant signals (NPSK) is contrary: when neutral gear position signal (NPS) is for high level, neutral gear position redundant signals (NPSK) is low level; When neutral gear position signal (NPS) is for low level, neutral gear position redundant signals (NPSK) is high level.
19. sensing systems as claimed in claim 16, is characterized in that:
The level of the described position signal that reverses gear (RPS) and the position redundant signals (RPSK) that reverses gear is contrary: when the position signal that reverses gear (RPS) is for high level, and the position redundant signals (RPSK) that reverses gear is low level; When the position signal that reverses gear (RPS) is for low level, the position redundant signals (RPSK) that reverses gear is high level.
20. sensing systems as claimed in claim 1, is characterized in that:
Described sense cell (104,104 ', 106,106 ') is switch Hall element.
21. sensing systems as claimed in claim 20, is characterized in that:
Described its operating voltage of switch Hall element is 5V-12V.
22. sensing systems as claimed in claim 9, is characterized in that:
The neutral gear position of two corresponding whole shift range of sense cell (104,104 ') in described two-way neutral sense line (112,114) is arranged;
And if only if when shifting shaft (101) enters neutral shift range, and described two-way neutral sense line sends neutral gear position signal (NPS) and neutral gear position redundant signals (NPSK).
23. sensing systems as claimed in claim 9, is characterized in that:
Described two-way two sense cell (106,106 ') correspondences of reversing gear in sense line (116,118) reverse gear position arrange;
And if only if, and shifting shaft (101) enters when reversing gear scope, and described two-way sense line of reversing gear sends the position signal that reverses gear (RPS) and the position redundant signals (RPSK) that reverses gear.
24. sensing systems as claimed in claim 1, is characterized in that:
The gearbox that described sensor (100) is applicable to is manual-gear vehicle, and gear is that 8 gears are arranged, and 3, every side, 6 advance gear point both sides is symmetrical arranged along neutral gear, and the gear that reverses gear is asymmetric is located at neutral gear side.
25. sensing systems as claimed in claim 1, is characterized in that:
The gearbox that described sensor (100) is applicable to is manual-gear vehicle, and wherein, the gear that reverses gear axially is positioned at all gear one end along shifting shaft (101), and arranges at shifting shaft (101) axially spaced-apart with advance gear.
26. sensing systems as described in any one of claim 1 to 25, is characterized in that:
Described sensor is integrated part.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521020875.4U CN205207648U (en) | 2015-12-10 | 2015-12-10 | Sensor system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521020875.4U CN205207648U (en) | 2015-12-10 | 2015-12-10 | Sensor system |
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| CN205207648U true CN205207648U (en) | 2016-05-04 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106870727A (en) * | 2015-12-10 | 2017-06-20 | 泰科电子科技（苏州工业园区）有限公司 | A kind of sensing system |
| CN107421429A (en) * | 2016-05-17 | 2017-12-01 | 通用汽车环球科技运作有限责任公司 | Magnetic speed changer parking position sensor |
| EP3404367A1 (en) * | 2017-05-18 | 2018-11-21 | Tyco Electronics (Shanghai) Co. Ltd. | Sensing system for sensing a position of a gear shaft |
| CN108953595A (en) * | 2017-05-18 | 2018-12-07 | 泰科电子(上海)有限公司 | For sensing the sensor-based system of gear rotating shaft position |
-
2015
- 2015-12-10 CN CN201521020875.4U patent/CN205207648U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106870727A (en) * | 2015-12-10 | 2017-06-20 | 泰科电子科技（苏州工业园区）有限公司 | A kind of sensing system |
| CN107421429A (en) * | 2016-05-17 | 2017-12-01 | 通用汽车环球科技运作有限责任公司 | Magnetic speed changer parking position sensor |
| CN107421429B (en) * | 2016-05-17 | 2019-12-27 | 通用汽车环球科技运作有限责任公司 | Magnetic transmission parking position sensor |
| EP3404367A1 (en) * | 2017-05-18 | 2018-11-21 | Tyco Electronics (Shanghai) Co. Ltd. | Sensing system for sensing a position of a gear shaft |
| CN108953596A (en) * | 2017-05-18 | 2018-12-07 | 泰科电子(上海)有限公司 | For sensing the sensor-based system of gear rotating shaft position |
| CN108953595A (en) * | 2017-05-18 | 2018-12-07 | 泰科电子(上海)有限公司 | For sensing the sensor-based system of gear rotating shaft position |
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