CN105091912B - Sensing device and method for sensing - Google Patents
Sensing device and method for sensing Download PDFInfo
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- CN105091912B CN105091912B CN201510476757.2A CN201510476757A CN105091912B CN 105091912 B CN105091912 B CN 105091912B CN 201510476757 A CN201510476757 A CN 201510476757A CN 105091912 B CN105091912 B CN 105091912B
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Abstract
The invention discloses a kind of sensing device and method for sensing, sensing device includes shell and the bar magnet being set in the shell (1) and magnetic induction part (2), and the enough orientations along its pole N and the poles S of potential energy are mobile relative to the magnetic induction part (2) in " 0 " magnetic dot of the bar magnet (1)；The sensitive surface of the magnetic induction part (2) is parallel to the side of its poles N and the orientation of the poles S towards the bar magnet (1)；The shift motion of position passes through the sensitive surface of the magnetic induction part (2) in " 0 " magnetic dot；Position is that magnetic induction intensity is the special position of 0 milli on the side of orientation of the bar magnet (1) along the poles N to the poles S in " 0 " magnetic dot.The change rate of sensing device provided by the invention, magnetic field intensity increases, and in order to make in time and accurately magnetic induction part generation magnetic strength induction signal, improves the sensing accuracy of sensing device.
Description
Technical field
The present invention relates to sensing equipment technical fields, more particularly to a kind of sensing device and method for sensing.
Background technology
Magnet itself is a different substance of object that space can be caused to generate linear motion.And to result in space close for spatial movement
Degree changes, and the variation of space density makes space generate diffusion motion.And then produce the magnetic line of force distribution of magnet external magnetic field
Situation.As shown in FIG. 1, FIG. 1 is the magnetic line of force situations of magnet, and still, there is no magnet in real life.And bar magnet
1 magnetic line of force situation is as shown in Figure 2.
The sensing principle of the sensing device of magnetic induction class is：The relative motion of magnet and magnetic induction part so that magnetic induction
Element carries out induction to the magnetic line of force that magnet generates and is exported as inductive signal.Currently, magnetic induction part is located at the poles S of magnet
Or N grades be relatively distant from or close movement, and then generate inductive signal.As shown in Figure 3 and Figure 4, with magnetic induction part work
Make for the N grade type of drive of magnet, by magnetic induction part relative to magnet N grades it is separate with it is close so that magnetic strength
Strength Changes of the element using magnet in space are answered, magnetic strength induction signal is generated and are exported.But in this case, magnetic field is strong
Degree variation it is smaller, it is difficult in time and accurately make magnetic induction part generate magnetic strength induction signal so that the sensing of sensing device
Precision is not high.
Therefore, the sensing accuracy for how improving sensing device is that those skilled in the art need the technology solved to ask at present
Topic.
Invention content
The object of the present invention is to provide a kind of sensing devices, to improve the sensing accuracy of sensing device.The present invention also provides
A kind of method for sensing.
In order to solve the above technical problems, the present invention provides a kind of sensing device, including shell and it is set in the shell
Bar magnet and magnetic induction part, the enough orientation phases along its pole N and the poles S of potential energy in " 0 " magnetic dot of the bar magnet
The magnetic induction part is moved；
The sensitive surface of the magnetic induction part is parallel to the side of its poles N and the orientation of the poles S towards the bar magnet；
The shift motion of position passes through the sensitive surface of the magnetic induction part in described " 0 " magnetic dot；
Position is that magnetic induction intensity is on the side of orientation of the bar magnet along the poles N to the poles S in " 0 " magnetic dot
The special position of 0 milli.
Preferably, in above-mentioned sensing device, the sensitive surface of the magnetic induction part towards the bar magnet and with it is described
The moving direction of bar magnet is mutually parallel.
Preferably, in above-mentioned sensing device, the sensing device is electronic switch, and the shell is the electronic switch
Shell；
The bar magnet is to be fixed on to stretch to be arranged on the ejector pin in the shell of the electronic switch, the bar shaped magnetic
Moving direction of the poles N of iron with the orientation of the poles S along the ejector pin is arranged.
Preferably, in above-mentioned sensing device, the sensing device is solenoid valve, and the magnetic induction part is fixed on the electricity
In the coil of magnet valve；
The bar magnet is the moving armature of the solenoid valve；The poles N of the bar magnet are with the orientation of the poles S along it
Orientation with the static gag bit of the solenoid valve is arranged.
Preferably, in above-mentioned sensing device, the static gag bit with corresponding set is both provided on the opposite face of the moving armature
The groove set；
It is provided with compressed spring in the cavity that the groove of the groove of the static gag bit and the moving armature is formed.
Preferably, in above-mentioned sensing device, the magnetic induction part is Hall element.
The present invention also provides a kind of method for sensing, including bar magnet and magnetic induction part；
1) sensitive surface of the magnetic induction part is parallel to the one of its pole N and the orientation of the poles S towards the bar magnet
Side；
2) position in " 0 " magnetic dot of the bar magnet is made to occur along the bar shaped magnetic with the magnetic induction part by external force
The relative motion of the poles N of iron and the orientation of the poles S, the magnetic induction part is passed through in position in " 0 " magnetic dot of the bar magnet
Sensitive surface；
Position is that magnetic induction intensity is on the side of orientation of the bar magnet along the poles N to the poles S in " 0 " magnetic dot
The special position of 0 milli；
3) induced signal for sensing the magnetic induction part is exported as transducing signal.
Preferably, in above-mentioned method for sensing, the magnetic induction part is Hall element.
Preferably, in above-mentioned method for sensing, in step 2), the bar magnet or magnetic induction member are pushed by external force
Part simultaneously makes the two relatively move, so that position occurs with the magnetic induction part in " 0 " magnetic dot of the bar magnet
Relative motion.
Preferably, in above-mentioned method for sensing, in step 2), make the bar magnet relative to the magnetic by magnetic-adsorption
Sensing element moves, so that with the magnetic induction part relative motion occurs for position in " 0 " magnetic dot of the bar magnet.
Preferably, in above-mentioned method for sensing, in step 2), the bar magnet is relatively fixed with the magnetic induction part；
It is moved so that in " 0 " magnetic dot of the bar magnet relative to the bar magnet by extraneous magnetic strength moving parts
Position of the position on the bar magnet generates movement, so that position and the magnetic strength in " 0 " magnetic dot of the bar magnet
Answer element that relative motion occurs.
Sensing device provided by the invention, the sensitive surface of magnetic induction part are parallel to its pole N towards bar magnet and are arranged with the poles S
The side of column direction, and magnetic induction part is fixed on shell, potential energy is enough along its pole N and the poles S in " 0 " magnetic dot of bar magnet
Orientation is moved relative to shell so that in " 0 " magnetic dot of magnetic induction part and bar magnet when the relative motion of position, magnetic induction
Element is located in the field region that position generates in " 0 " magnetic dot, and the change rate of magnetic field intensity increases, in order to make in time and accurately
Magnetic induction part generates magnetic strength induction signal, improves the sensing accuracy of sensing device.
The present invention also provides a kind of method for sensing.There is same technique effect with above-mentioned sensing device, herein no longer
It is discussed in detail.
Description of the drawings
Fig. 1 is the structural schematic diagram of the magnetic line of force of point magnet；
Fig. 2 is the structural schematic diagram of the magnetic line of force of bar magnet；
Fig. 3 is the structural schematic diagram of the first state of sensing device in the prior art；
Fig. 4 is the structural schematic diagram of second of state of sensing device in the prior art；
Fig. 5 is the structural schematic diagram of the magnetic line of force of bar magnet provided by the present invention；
Fig. 6 is the structural schematic diagram of the first state of sensing device provided by the present invention；
Fig. 7 is the structural schematic diagram of second of state of sensing device provided by the present invention.
Fig. 8 is the structural schematic diagram of electronic switch provided by the present invention；
Fig. 9 is the structural schematic diagram of solenoid valve provided by the present invention.
Specific implementation mode
Core of the invention is to provide a kind of sensing device, to improve the sensing accuracy of sensing device.The present invention also provides
A kind of method for sensing.
In order to enable those skilled in the art to better understand the solution of the present invention, with reference to the accompanying drawings and detailed description
The present invention is described in further detail.
Fig. 6 and Fig. 7 are please referred to, Fig. 6 is the structural schematic diagram of the first state of sensing device provided by the present invention；Figure
7 be the structural schematic diagram of second of state of sensing device provided by the present invention.
In this specific implementation mode, sensing device includes 1 He of shell and the bar magnet being set in the shell
Magnetic induction part 2, the enough orientations along its pole N and the poles S of potential energy are relative to magnetic induction part 2 in " 0 " magnetic dot of bar magnet 1
It is mobile；The sensitive surface of magnetic induction part 2 is parallel to the side of its poles N and the orientation of the poles S towards bar magnet 1；In " 0 " magnetic dot
The shift motion of position passes through the sensitive surface of magnetic induction part 2；
Wherein, it is 0 that position, which is the magnetic induction intensity along the poles N to the side of the orientation of the poles S of bar magnet 1, in " 0 " magnetic dot
The special position of milli.
As shown in figure 5, position of center line of the bar magnet 1 perpendicular to the poles N to the orientation of the poles S is special there are one
Field region, i.e., what position generated in " 0 " magnetic dot of strip magnet is similar to the field region that point magnet generates.In this region
The change rate of the variation of the interior position with magnetic induction part 2, magnetic field intensity increases.
With diameter 4mm, the bar magnet 1 of length 5mm is tested, and the data obtained are as follows：
The magnetic induction intensity of the end of 1 bar magnet of table
And the magnetic strength of the poles N of the bar magnet 1 and magnetic induction intensity position in " 0 " magnetic dot of the side of the poles S orientation
Intensity is that 0 milli is special.Detection is set to obtain for 1mm to have the vertical range of bar magnet 1 (orientation perpendicular to the poles N and the poles S),
The magnetic induction that 0.1mm is moved from position in " 0 " magnetic dot to N Ghandler motions is that 15 millis are special, and the magnetic of 0.1mm is moved from position in " 0 " magnetic dot to S Ghandler motions
It is that -15 millis are special to feel intensity；The magnetic induction that 2.5mm (the extreme portions N) is moved from position in " 0 " magnetic dot to N Ghandler motions is that 380 millis are special, by " 0 "
The magnetic induction that position moves 2.5mm (the extreme portions S) to S Ghandler motions in magnetic dot is that -380 millis are special.It is understood that in real process
In, magnetic induction part 2 and the spacing (i.e. above-mentioned vertical range) of bar magnet 1 are preferably less than 1mm, such as 0.3mm, 0.6mm
Deng the variation bigger of magnetic induction.
By taking magnetic induction part 2 is the Hall elements that Schmidt's characteristic is 2 milli spies, 7 milli spies as an example：
In the prior art, 7 millis are specially for the magnetic induction of the end 10-11mm apart from bar magnet, and 2 millis are specially for apart from bar shaped
The magnetic induction of the end 16-17mm of magnet.Therefore, the change in displacement between magnetic induction part 2 and bar magnet 1 is needed in item
The end 10-11mm of shape magnet is between the end positions 16-17mm of bar magnet, that is, magnetic induction part 2 is relative to bar shaped magnetic
Iron 1 could generate corresponding magnetic strength induction signal by movement the 16-17mm of its end 10-11mm to its end.
In the present embodiment, magnetic induction part 2 is relative to position in " 0 " magnetic dot of bar magnet 1 to the poles N and the orientation of the poles S
Mobile 0.1mm can generate magnetic strength induction signal.Also, when magnetic induction part 2 is by position in " 0 " magnetic dot, level can be caused to turn over
Turn.
When no external magnetic field influences, position is the orientation perpendicular to the poles N to the poles S in " 0 " magnetic dot of bar magnet 1
Position of center line.And when there is external magnetic field influence, in " 0 " magnetic dot of bar magnet 1 position by external magnetic field and bar magnet 1 from
The magnetic induction intensity that the superposition in body magnetic field generates is the special position of 0 milli.It is heteropolar close to each other such as two bar magnets 1, then two
Position is moved along direction close to each other in " 0 " magnetic dot of person.
It follows that sensing device provided in an embodiment of the present invention, the sensitive surface of magnetic induction part 2 is towards bar magnet 1
It is parallel to the side of its poles N and the orientation of the poles S, and magnetic induction part 2 is fixed on shell, in " 0 " magnetic dot of bar magnet 1
Potential energy is enough to be moved along its pole N and the orientation of the poles S relative to shell so that " 0 " magnetic of magnetic induction part 2 and bar magnet 1
In point when the relative motion of position, magnetic induction part 2 is located in the field region that position generates in " 0 " magnetic dot, the change rate of magnetic field intensity
Increase, in order to make in time and accurately the generation magnetic strength induction signal of magnetic induction part 2, improves the sensing accuracy of sensing device.
In order to further increase sensing effect, the sensitive surface of magnetic induction part 2 towards bar magnet 1 and with bar magnet 1
Moving direction be mutually parallel.It can also make to tilt between the sensitive surface of magnetic induction part 2 and the moving direction of bar magnet 1 and set
It sets, is no longer discussed in detail herein and within protection domain.
As shown in figure 8, sensing device is electronic switch, shell is the shell a5 of electronic switch；Bar magnet a1 is fixed on
On the flexible ejector pin a6 being arranged in shell a5, the poles N of bar magnet a1 are with the orientation of the poles S along the moving direction of ejector pin a6
Arrangement.In the present embodiment, no external magnetic field influences, then position is perpendicular to the poles N to the poles S in " 0 " magnetic dot of bar magnet a1
The position of center line of orientation.Movement by bar magnet a1 relative to magnetic induction part a2 realizes bar magnet a1's
Orientation of the position along its pole N and the poles S is moved relative to magnetic induction part a2 in " 0 " magnetic dot.
In the present embodiment, electromagnetic switch is by shell a5, ejector pin a6, the spring a8 etc. between ejector pin a6 and shell a5
Component forms.It is fixedly installed bolt a4 in shell a5, guide sleeve a3 is arranged in bolt a4, ejector pin a6 is slideably positioned in guide sleeve a3
It is interior, there is cavity at the contact surface of bolt a4 and guide sleeve a3, what magnetic induction part a2 was formed between bolt a4 and guide sleeve a3
In cavity and sensitive surface is towards guide sleeve a3.Preferably, in order to improve wearability, copper pipe is provided between guide sleeve a3 and ejector pin a6
a7.Bar magnet a1 is located at the side that ejector pin a6 stretches into guide sleeve a3.
As shown in figure 9, the sensing device in the present embodiment is solenoid valve, magnetic induction part b2 is fixed on the coil of solenoid valve
In b5.It should be noted that the shell of solenoid valve is relatively fixed with its coil b5, therefore, magnetic induction part b2 is fixed on electromagnetism
The shell of itself and solenoid valve is set to fix indirectly in the coil b5 of valve.Bar magnet is the moving armature b1 of solenoid valve；The N of bar magnet
The orientation of pole and the poles S is arranged along the orientation of itself and the static gag bit b4 of solenoid valve.In the present embodiment, there is external magnetic field
It influences.After coil b5 is powered, moving armature b1, which is attracted by static gag bit b4 to static gag bit b4, to be moved, and moving armature b1 itself is to static gag bit
B4 is moved.It should be noted that when the relative position as moving armature b1 and static gag bit b4 is closer, by static gag bit b4 magnetic field to dynamic
The influence of itself magnet of armature b1, position is equally moved to static gag bit b4 in " 0 " magnetic dot of moving armature b1.To sum up, when coil b5 is logical
After electricity, position is moved to static gag bit b4 in " 0 " magnetic dot of moving armature b1, realizes position in " 0 " magnetic dot of moving armature b1 (bar magnet)
Orientation along its pole N and the poles S is moved relative to magnetic induction part b2.In the present embodiment, bar magnet b1 is close to quiet
In the movement of armature b4, position is moved to B location by location A in " 0 " magnetic dot of bar magnet b1.
In order to ensure static gag bit b4 and moving armature b1 are relatively distant from after dead electricity, the bullet of compressive state is provided therebetween
Property device.And in the present embodiment, in order to improve the stationarity of static gag bit b4 and moving armature b1 relative motions, static gag bit b4 directions are dynamic
It is arranged fluted on the opposite face of armature b1, moving armature b1 is towards being also equipped with groove, and quiet rank on the opposite face of static gag bit b4
The groove of iron b4 and the groove of moving armature b1 are correspondingly arranged so that the two forms the cavity of connection, and is provided in this cavity
Compressed spring b3.
The position of bar magnet 1 can also be made motionless, only make its " 0 " magnetic by bar magnet 1 is influenced by external magnetic field
Displacement is dynamic in point.In the present embodiment, bar magnet 1 and the relative position of magnetic induction part 2 are motionless, pass through the mobile magnetic of setting
Iron keeps it mobile to the end (the extreme portions N or the extreme portions S) of bar magnet 1.When the end of the moving magnet and bar magnet 1
When attracting each other, position is moved to close to the direction of moving magnet in " 0 " magnetic dot of bar magnet 1；When the moving magnet and bar shaped
When the end of magnet 1 is mutually exclusive, position is moved to the direction far from moving magnet in " 0 " magnetic dot of bar magnet 1.By above-mentioned
It is mobile so that bar magnet 1 and the relative position of magnetic induction part 2 are motionless, and position and magnetic strength in " 0 " magnetic dot of bar magnet 1
Orientation of the element 2 along the poles N of bar magnet 1 and the poles S is answered to relatively move.Further, magnetic induction part 2 is Hall member
Part.Hall element has high level state and low level state, when Hall element is by position in " 0 " magnetic dot, level state hair
Raw overturning, i.e., be low level state by high level state overturning or to be overturn by low level state be high level state, so by this
Level state energizing signal is exported as inductive signal.Other magnetic induction parts, such as tongue tube can also be used.
The embodiment of the present invention additionally provides a kind of method for sensing, including bar magnet 1 and magnetic induction part 2；
S1：The sensitive surface of magnetic induction part 2 is parallel to the side of its poles N and the orientation of the poles S towards bar magnet 1；That is,
Magnetic induction part 2 is located in the field region that position generates in " 0 " magnetic dot of bar magnet 1.
S2：Position in " 0 " magnetic dot of bar magnet 1 is set to occur along the poles N of bar magnet 1 with magnetic induction part 2 by external force
With the relative motion of the orientation of the poles S, the sensitive surface of magnetic induction part 2 is passed through in position in " 0 " magnetic dot of bar magnet 1.
Wherein, it is 0 that position, which is the magnetic induction intensity along the poles N to the side of the orientation of the poles S of bar magnet 1, in " 0 " magnetic dot
The special position of milli.
S3：The induced signal that magnetic induction part 2 is sensed is exported as sensing outcome.Magnetic induction part 2 is strong by magnetic field
The induced signal that the variation of degree generates is exported as transducing signal.
The sensitive surface of method for sensing provided in an embodiment of the present invention, magnetic induction part 2 is parallel to its N towards bar magnet 1
The side of pole and the orientation of the poles S, the position relative motion in being made " 0 " magnetic dot of magnetic induction part 2 with bar magnet 1 by external force
When, magnetic induction part 2 is located in the field region that position generates in " 0 " magnetic dot, and the change rate of magnetic field intensity increases, in order to timely
And magnetic induction part 2 is accurately made to generate magnetic strength induction signal, improve sensing accuracy.
In the present embodiment, magnetic induction part 2 is Hall element.Hall element has high level state and low level shape
State, when Hall element is by position in " 0 " magnetic dot, level state is overturn, i.e., is low level shape by high level state overturning
State is high level state by low level state overturning, and then is exported this level state energizing signal as inductive signal.?
Other magnetic induction parts, such as tongue tube may be used.
Both in the first embodiment, in step S2, bar magnet 1 or magnetic induction part 2 are pushed by external force, make
It relatively moves, so that with magnetic induction part 2 relative motion occurs for position in " 0 " magnetic dot of bar magnet 1.
In the second embodiment, in step S2, make bar magnet 1 relative to magnetic induction part 2 by magnetic-adsorption
It is mobile, so that with magnetic induction part 2 relative motion occurs for position in " 0 " magnetic dot of bar magnet 1.Wherein, magnetic force can be used only
Moved in absorption bar magnet 1, can also while mobile to " 0 " magnetic dot of bar magnet 1 in position generate to sending out
The close influence of the component of magnetic force.
In the third embodiment, in step S2, bar magnet 1 is relatively fixed with magnetic induction part 2；Pass through extraneous magnetic
Feel moving parts to be moved relative to bar magnet 1 so that position production of the position on bar magnet 1 in " 0 " magnetic dot of bar magnet 1
Raw movement, so that with magnetic induction part 2 relative motion occurs for position in " 0 " magnetic dot of bar magnet 1.And extraneous magnetic strength movement
Component can be the component that iron material, cobalt material or nickel material make, and can also directly apply magnet.Usually iron material makes
Extraneous magnetic strength moving parts.
Sensing device provided by the present invention is described in detail above.Specific case used herein is to this hair
Bright principle and embodiment is expounded, the explanation of above example is only intended to help understand the present invention method and its
Core concept.It should be pointed out that for those skilled in the art, in the premise for not departing from the principle of the invention
Under, it can be with several improvements and modifications are made to the present invention, these improvement and modification also fall into the protection of the claims in the present invention
In range.
Claims (11)
1. a kind of sensing device, which is characterized in that including shell and the bar magnet being set in the shell (1) and magnetic induction
Element (2), the enough orientations along its pole N and the poles S of potential energy are relative to the magnetic strength in " 0 " magnetic dot of the bar magnet (1)
Answer element (2) mobile；When no external magnetic field influences, position is perpendicular to the poles N to the poles S in " 0 " magnetic dot of the bar magnet (1)
Orientation position of center line, and when there is external magnetic field influence, in " 0 " magnetic dot of the bar magnet (1) position be by
The magnetic induction intensity that the superposition of external magnetic field and the bar magnet (1) self-field generates is the special position of 0 milli；
The sensitive surface of the magnetic induction part (2) is parallel to the one of its pole N and the orientation of the poles S towards the bar magnet (1)
Side；The shift motion of position passes through the sensitive surface of the magnetic induction part (2) in " 0 " magnetic dot；Position is institute in " 0 " magnetic dot
It is the special position of 0 milli to state bar magnet (1) magnetic induction intensity along the poles N to the side of the orientation of the poles S；In the magnetic induction
In " 0 " magnetic dot described in element (2) process when position, level can be caused to overturn.
2. sensing device according to claim 1, which is characterized in that the sensitive surface of the magnetic induction part (2) is towards institute
It states bar magnet (1) and is mutually parallel with the moving direction of the bar magnet (1).
3. sensing device according to claim 1, which is characterized in that the sensing device is electronic switch, the shell
For the shell (a5) of the electronic switch；
The bar magnet is to be fixed on to stretch to be arranged on the ejector pin (a6) in the shell (a5) of the electronic switch, the item
Moving direction of the poles N of shape magnet with the orientation of the poles S along the ejector pin (a6) is arranged.
4. sensing device according to claim 1, which is characterized in that the sensing device is solenoid valve, the magnetic induction
Element is fixed in the coil (b5) of the solenoid valve；
The bar magnet is the moving armature (b1) of the solenoid valve；The poles N of the bar magnet are with the orientation of the poles S along it
Orientation with the static gag bit (b4) of the solenoid valve is arranged.
5. sensing device according to claim 4, which is characterized in that the static gag bit (b4) and the moving armature (b1)
The groove being correspondingly arranged is both provided on opposite face；
It is provided with compressed spring (b3) in the cavity that the groove of the static gag bit (b4) is formed with the groove of the moving armature (b1).
6. according to claim 1-5 any one of them sensing devices, which is characterized in that the magnetic induction part (2) is Hall
Element.
7. a kind of method for sensing, which is characterized in that including bar magnet (1) and magnetic induction part (2)；
1) sensitive surface of the magnetic induction part (2) is parallel to its pole N and the orientation of the poles S towards the bar magnet (1)
Side；
2) position in " 0 " magnetic dot of the bar magnet (1) is made to occur along the bar shaped with the magnetic induction part (2) by external force
The relative motion of the poles N of magnet (1) and the orientation of the poles S, the magnetic is passed through in position in " 0 " magnetic dot of the bar magnet (1)
The sensitive surface of sensing element (2)；
Position is that magnetic induction intensity is 0 on the side of orientation of the bar magnet (1) along the poles N to the poles S in " 0 " magnetic dot
The special position of milli；When no external magnetic field influences, position is perpendicular to the poles N to the poles S in " 0 " magnetic dot of the bar magnet (1)
The position of center line of orientation, and when there is external magnetic field influence, position is by outer in " 0 " magnetic dot of the bar magnet (1)
The magnetic induction intensity that the superposition of boundary magnetic field and the bar magnet (1) self-field generates is the special position of 0 milli；
3) induced signal for sensing the magnetic induction part (2) is exported as transducing signal.
8. method for sensing according to claim 7, which is characterized in that the magnetic induction part (2) is Hall element.
9. method for sensing according to claim 7, which is characterized in that in step 2), the bar shaped magnetic is pushed by external force
Iron (1) or the magnetic induction part (2) simultaneously make the two relatively move, so that " 0 " magnetic dot of the bar magnet (1)
With the magnetic induction part (2) relative motion occurs for middle position.
10. method for sensing according to claim 7, which is characterized in that in step 2), make the bar shaped by magnetic-adsorption
Magnet (1) is mobile relative to the magnetic induction part (2) so that in " 0 " magnetic dot of the bar magnet (1) position with it is described
Relative motion occurs for magnetic induction part (2).
11. method for sensing according to claim 7, which is characterized in that in step 2), the bar magnet (1) with it is described
Magnetic induction part (2) is relatively fixed；
By extraneous magnetic strength moving parts relative to mobile " 0 " magnetic dot for making the bar magnet (1) of the bar magnet (1)
Position of the middle position on the bar magnet (1) generates movement so that in " 0 " magnetic dot of the bar magnet (1) position with
Relative motion occurs for the magnetic induction part (2).
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| WO2018152740A1 (en) * | 2017-02-23 | 2018-08-30 | 深圳市汇顶科技股份有限公司 | Sensing unit |
| CN113238223B (en) * | 2021-05-24 | 2024-04-19 | 德惠市北方汽车底盘零部件有限公司 | Anti-stealth radar, aircraft detection method and device |
| CN113189653A (en) * | 2021-05-24 | 2021-07-30 | 德惠市北方汽车底盘零部件有限公司 | Equipment, method and device for detecting underwater vehicle and computer readable storage medium |
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| CN1433512A (en) * | 1999-12-03 | 2003-07-30 | 费舍-柔斯芒特系统股份有限公司 | Flux shaping pole pieces for magnetic displacement sensor |
| CN2702435Y (en) * | 2004-03-30 | 2005-05-25 | 扬中市中金电器设备有限公司 | A bistable operating mechanism for permanent-magnet type contactor |
| CN201663070U (en) * | 2010-03-10 | 2010-12-01 | 解树卿 | Tongue control-type contact operating device |
| CN103256267A (en) * | 2013-04-28 | 2013-08-21 | 潍坊威度电子科技有限公司 | Hydraulic high-flow and high-speed digital valve |
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