CN106197626B - A kind of beam type pressure sensor based on Hall effect - Google Patents
A kind of beam type pressure sensor based on Hall effect Download PDFInfo
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- CN106197626B CN106197626B CN201610817824.7A CN201610817824A CN106197626B CN 106197626 B CN106197626 B CN 106197626B CN 201610817824 A CN201610817824 A CN 201610817824A CN 106197626 B CN106197626 B CN 106197626B
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- regulating member
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01G—WEIGHING
- G01G7/00—Weighing apparatus wherein the balancing is effected by magnetic, electromagnetic, or electrostatic action, or by means not provided for in the preceding groups
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- General Physics & Mathematics (AREA)
- Transmission And Conversion Of Sensor Element Output (AREA)
- Magnetic Bearings And Hydrostatic Bearings (AREA)
Abstract
The present invention relates to the beam type pressure sensors based on Hall effect, including bearing substrate, magnet and two hall devices；It is hollowed out in the middle part of the bearing substrate and to form pedestal, positioned at the load beam of base top and between pedestal and load beam and pressure measurement slot connected with the outside world；Extend in the middle part of the load soffit toward pedestal direction, and forms a magnet mounting base in pressure measurement slot；The magnet is installed on the magnet mounting base；Two hall device is installed on the pressure measurement slot, and is located at the opposite sides of the magnet.The present invention is converted into the variation in magnetic field by the pressure change for receiving pressure sensor, and the variation in magnetic field is converted to the variation of voltage signal based on the principle of Hall effect, the weight of the object carried, thus with a kind of untouchable measurement, improve measurement accuracy, and the controllability and controllability of sensor are greatly improved, have that production cost is low, reliable performance, measurement are controllable and the beneficial effects such as easy to use.
Description
Technical field
The invention belongs to art of pressure sensors, in particular to a kind of beam type pressure sensor based on Hall effect.
Background technique
Pressure sensor is a kind of for detecting the unit of pressure size, and cardinal principle is to lead to the power of external influence
The physical change or change in location for crossing itself, using sensible parts such as foil gauge, hall device, piezoelectric chip etc. these non-electrical
The physical change of amount is converted into change in electric, to achieve the purpose that the measurement to power.
Most commonly used existing pressure sensor is strain gauge pressure sensor, mainly by being pasted onto elastic element
On foil gauge the strain that stress effect generates be converted into changing for voltage achieve the purpose that measurement.But this seed type
The maximum limitation of sensor be as sensing element foil gauge installation and replacement it is difficult, and the performance of sensor is largely
The influence of upper strained sticking Quality.Make measurement accuracy limited in this way, is easy by external interference and can not adjust.
Summary of the invention
The shortcomings that the purpose of the present invention is to solve the above-mentioned prior arts and deficiency provide a kind of based on Hall effect
Beam type pressure sensor is converted into the variation in magnetic field by the pressure change for receiving pressure sensor, and is based on Hall effect
Principle the variation in magnetic field is converted to the variation of voltage signal, the weight of the object carried is achieved in a kind of non-connect
The measurement of touching property, to improve measurement accuracy, and substantially increases the controllability and controllability of sensor, has production cost
Low, reliable performance, controllable and easy to use etc. the beneficial effects of measurement.
To solve the above problems, the present invention provides a kind of beam type pressure sensor based on Hall effect comprising hold
Carry matrix, magnet and two hall devices；
It hollows out to form pedestal, positioned at the load beam of base top and positioned at pedestal and load in the middle part of the bearing substrate
Between beam and pressure measurement slot connected with the outside world；Extend in the middle part of the load soffit toward pedestal direction, and in pressure measurement
A magnet mounting base is formed in slot；
The magnet is installed on the magnet mounting base；
Two hall device is installed on the pressure measurement slot, and is located at the opposite sides of the magnet.
Beam type pressure sensor the present invention is based on Hall effect further includes being respectively used to adjust two hall device
The two positions regulating mechanism of position and two installing mechanisms for installing two hall device respectively；The two positions tune
Section mechanism is respectively arranged in two installing mechanism, and each position regulating mechanism includes for along the bearing substrate length
The first of the position of direction adjusting hall device is to position regulating member, and/or for adjusting along the bearing substrate width direction
The second of the position of hall device is to position regulating member, and/or for adjusting hall device along the bearing substrate short transverse
Position third to position regulating member.By the position adjusting mechanism added, the adjustment to the position of hall device is realized, from
And further increase the adjustability of pressure sensor of the invention and the controllability of measurement performance.
Each installing mechanism is pacified including one from a lateral edge bearing substrate length direction in the pressure measurement slot slot toward magnet
Dress seat extend to form installation backup plate, one be set to the magnet mounting base and it is described install backup plate between sliding block, a presser feet
Plate and both side plate；And pin is equipped at the top of each hall device；
The pressure foot is installed on the top of the sliding block by first to position regulating member；
The pin is folded between the pressure foot and the sliding block, and hall device is hung at cunning by the pin
Between block and magnet mounting base；The pin is adjusted by the position of sandwiched length direction, in fact to position regulating member by first
Now hall device is adjusted in the position on bearing substrate length direction；
The both side plate is respectively arranged in the two opposite outer of the installation backup plate and the sliding block, and it passes through one respectively
Second is connected with the slide block to position regulating member；Drive the sliding block in bearing substrate width to position regulating member by second
It is moved on direction, realizes and hall device is adjusted in the position in bearing substrate width direction；
The third is connect through the pressure measurement slot slot bottom with the slider bottom to position regulating member；Pass through third
It drives the sliding block to move in bearing substrate short transverse to position regulating member, realizes to hall device in bearing substrate height
Position on direction is adjusted.
Thus the present invention is converted by the pressure change that bearing substrate, magnet and hall device receive pressure sensor
The variation in magnetic field, and the variation in magnetic field is converted to based on the principle of Hall effect the variation of voltage signal, the object carried
The weight of body is achieved in a kind of untouchable measurement, and the patch quality of strain pressure transducer is avoided to influence measurement essence
The problem of replacing is spent and be difficult to, to improve measurement accuracy, and greatly improves the controllability and controllability of sensor, there is life
Produce at low cost, reliable performance, controllable and easy to use etc. the beneficial effects of measurement.
By the design of the structure to installing mechanism, be conducive to the structure construction for simplifying pressure sensor of the present invention, simultaneously
The firm and balance for also ensuring position adjusting mechanism installation, is conducive to the measurement for further increasing pressure sensor of the present invention
Precision.
As a further improvement of the present invention, described first spiral shell is adjusted to position including at least one first to position regulating member
Nail；Described first adjusts screw to position is threadedly coupled with the sliding block, and it through the pressure foot and makes pressure foot compress institute
State pin.By first to position regulating member structure, further simplify the structure of pressure sensor of the present invention, reduce production
Cost and further increase ease for operation.
As a further improvement of the present invention, described second spiral shell is adjusted to position including at least one second to position regulating member
Nail；Described second adjusts screw to position is threadedly coupled with the side plate, and it is abutted through the side plate and with the sliding block.It is logical
Cross the second structure to position regulating member, further simplify the structure of pressure sensor of the present invention, reduce production cost and into
One step improves ease for operation.
As a further improvement of the present invention, the third adjusts spiral shell to position including an at least third to position regulating member
Nail；The third adjusts screw to position and is threadedly coupled with the pressure measurement slot slot bottom, and it runs through the pressure measurement slot slot
Simultaneously withstand the slider bottom in bottom.By third to the structure of position regulating member, pressure sensor of the present invention is further simplified
Structure, reduce and production cost and further increase ease for operation.
As a further improvement of the present invention, each position regulating mechanism further includes one for avoiding sliding block in bearing substrate
The limit plate moved on length direction；Limit plate is set to the sliding block and magnet peace of the installing mechanism where its regulating mechanism
It fills between seat, and forms one for accommodating the limit space of sliding block with the installation backup plate；And hall device is hung by pin and is set
Between limit plate and magnet mounting base.By limit plate, be conducive to during avoiding sliding block from being conditioned position toward carrying base
The length direction of body is mobile to be generated deviation and influences measurement accuracy.
As a further improvement of the present invention, the beam type pressure sensor based on Hall effect further includes overload protection machine
Structure；The overload protecting mechanism is set to the underface of the magnet mounting base, to limit because load beam bears to cause after loading
The displacement that magnet mounting base moves down.By the limitation of overload protecting mechanism, be conducive to because load beam bears to cause magnetic due to load
The displacement that iron mounting base moves down is limited, namely the displacement that limitation magnet maximum moves down, to reach to load
The control of the maximum load bearing capacity size of beam, to realize the control to the range of pressure sensor of the invention.
As a further improvement of the present invention, it is equipped with a pallet mounting base in the middle part of the top surface of the load beam, for carrying
Tested load.By pallet mounting base, tested load is carried, is conducive to the middle part that stress is concentrated on to load beam, and
Band moving magnet mounting base moves down, and further increases the precision of measurement.
As a further improvement of the present invention, two hall device is arranged in parallel, and is respectively parallel to the magnetic
The opposite sides of iron.By being arranged herein, facilitates and the output circuit of two hall devices is connected, output sensitivity can be improved one
Times, and the linear characteristic of input and output is improved, be conducive to preferably measure the changes of magnetic field of magnet, further mention
High measurement accuracy.
In order to better understand and implement, the invention will now be described in detail with reference to the accompanying drawings.
Detailed description of the invention
Fig. 1 is the side structure schematic view of the beam type pressure sensor the present invention is based on Hall effect；
Fig. 2 is the side structure schematic view of the bearing substrate of the beam type pressure sensor the present invention is based on Hall effect；
Fig. 3 is the side structure schematic view after the beam type pressure sensor in Fig. 2 is further improved；
Fig. 4 is the schematic perspective view after the beam type pressure sensor in Fig. 3 is further improved；
Fig. 5 is the schematic perspective view under the overlooking state after the beam type pressure sensor in Fig. 4 is further improved；
Fig. 6 is schematic perspective view of the beam type pressure sensor under state of looking up in Fig. 5；
Fig. 7 is the schematic perspective view after the beam type pressure sensor in Fig. 5 is further improved.
Specific embodiment
Referring to Fig. 1, in the present embodiment, the beam type pressure sensor the present invention is based on Hall effect includes bearing substrate
1, magnet 2 and two hall devices (31 and 32).
Referring to Fig. 2, specifically, hollowing out to form pedestal 11, the load positioned at 11 top of pedestal in the middle part of the bearing substrate 1
Beam 12 and between pedestal 11 and load beam 12 and pressure measurement slot 13 connected with the outside world.12 bottom surface of load beam
Middle part extends toward 11 direction of pedestal, and a magnet mounting base 14 is formed in pressure measurement slot 13.
The magnet 2 is installed on the magnet mounting base 14.In the present embodiment, the end of the magnet mounting base 14 is set
There is a groove profile block 141, the side structure of the groove profile block 141 is concave, and the side where its recess portion and the magnet are installed
Fixation is bolted in the end of seat 14；The magnet 2 is installed in the recess portion of the groove profile block 141.
Two hall device (31 and 32) is installed on the pressure measurement slot 13, and is located at the phase of the magnet 2
To two sides.In the present embodiment, in order to guarantee measurement accuracy, two hall device (31 and 32) is arranged in parallel, and point
It is not parallel to the opposite sides of the magnet 2.
Referring to Fig. 3, making to further increase the adjustability of pressure sensor of the invention and the controllability of measurement performance
For a kind of more preferably technical solution, the beam type pressure sensor the present invention is based on Hall effect further includes being respectively used to described in adjusting
The two positions regulating mechanism (41 and 42) of the position of two hall devices (31 and 32) and for installing the two Halls device respectively
Two installing mechanisms (51 and 52) of part (31 and 32).The two positions regulating mechanism (41 and 42) is respectively arranged in two installation
Mechanism (51 and 52), and each position regulating mechanism includes for adjusting hall device along 1 length direction of bearing substrate
Position the first position to position regulating member, and/or for adjusting hall device along 1 width direction of bearing substrate
The third of second position to position regulating member, and/or for adjusting hall device along 1 short transverse of bearing substrate is to position
Regulating member.
In the present embodiment, each position regulating mechanism includes first to position regulating member 4x, second to position adjustment portion
Part 4y and third are to position regulating member 4z.
Please continue to refer to Fig. 3, to simplify the structure construction of pressure sensor of the present invention, while also ensuring that position adjusts machine
The firm and balance of structure installation, is conducive to the measurement accuracy for further increasing pressure sensor of the present invention, as a kind of preferred
Ground technical solution, in the present embodiment, each installing mechanism are used with flowering structure: each installing mechanism include installation backup plate 511,
Sliding block 512, pressure foot 513 and both side plate 514.The installation backup plate 511 is carried by a lateral edge in 13 slot of pressure measurement slot
1 length direction of matrix is extended to form toward magnet mounting base 14.The sliding block 512 is set to magnet mounting base 14 and the installation is leaned on
Between plate 511.The pressure foot 513 is installed on the top of the sliding block 512 by first to position regulating member 4x.The two sides
Plate 514 be respectively arranged in it is described installation backup plate 511 and the sliding block 512 two opposite outer, and its pass through respectively one second to
Position regulating member 4y is connect with the sliding block 512, by second to the position regulating member 4y drive sliding block 512 in bearing substrate
It is moved in 1 width direction, realizes and hall device is adjusted in the position in 1 width direction of bearing substrate.
Also, it is adjusted for convenience of displacement of the hall device on bearing substrate length direction, is further simplified structure, preferably
Ground, the top of each hall device are equipped with the pin 311 of hard, and in the present embodiment, the top of each hall device is equipped with three
The pin of root hard.The pin 311 is folded between the pressure foot 513 and the sliding block 512, and hall device 31 passes through
Pin 311 is hung between sliding block 512 and magnet mounting base 14, adjusts the pin 311 to position regulating member 4x by first
By the position of sandwiched length direction, realizes and hall device 31 is adjusted in the position on 1 length direction of bearing substrate.In this reality
It applies in example, the displacement that every pin is parallel to the displacement adjusting section slot bottom of pressure measurement slot 13 by one adjusts section 31a and one and is somebody's turn to do
Displacement adjusts the vertical hanging section 31b of section 31a and is integrally formed to be formed, and the displacement is adjusted between the section 31a and hanging section 31b
Junction be an arc lead angle structure.Then in application process, the displacement of the pin 311 adjusts section and is folded in the pressure
Between sole 513 and the sliding block 512, the hanging section 31b connect with hall device 31 and is parallel to the magnet mounting base
14。
The third is abutted through 13 slot bottom of pressure measurement slot with 512 bottom of sliding block to position regulating member 4z,
It drives the sliding block 512 to move in 1 short transverse of bearing substrate to position regulating member 4z by third, realizes to hall device
It is adjusted in the position in 1 short transverse of bearing substrate.
It further, is the structure of simplification pressure sensor of the invention, in this embodiment, it is preferred that, it is each to position tune
The structure difference for saving mechanism is as follows:
Described first adjusts screw to position including at least one first to position regulating member 4x.Described first adjusts screw to position
It is threadedly coupled with the sliding block 512, and it through the pressure foot 513 and makes pressure foot 513 compress the pin 311.As a result,
Screw is adjusted to position by unscrewing first, pin 311 is unclamped, pin 311 can be moved along the length direction of bearing substrate 1,
To change position of the hall device on 1 length direction of bearing substrate, after the completion of the adjustment of position, can screw again first to
Position adjusts screw, and the pressure foot 513 is made to compress the pin 311 again, realizes the position to the hall device after the completion of adjusting
The fixation set.
In other variant embodiments, described first, which adjusts screw to position, could alternatively be bolt or can be with pressure foot 513
Carry out the multistage card column being fixed or the other structures with similar functions.
And described second to position regulating member 4y include at least one second to position adjust screw.In the present embodiment, described
Second to position regulating member 4y includes being respectively arranged at the two second of 1 front and rear sides of bearing substrate to adjust screw to position.Often
One second, which adjusts screw to position, includes a upper screw.The upper screw is threadedly coupled with the side plate 514, and it runs through institute
It states side plate 514 and is abutted with the sliding block 512.Be located at 1 front and rear sides of bearing substrate by rotation as a result, second is adjusted to position
The upper screw of screw screws the upper screw of wherein side, and the upper screw of the other side unscrews, that is, making wherein one
The second of side becomes larger to the length for the part that the upper screw that position adjusts screw protrudes into outside 514 inside of side plate, and the other side becomes smaller, from
And pushing tow sliding block 512, make sliding block 512 that hall device be driven to exist toward by the direction movement of pushing tow to realize to hall device
Position in 1 width direction of bearing substrate is adjusted.In order to improve the reliability of installation and adjusting, second, which adjusts screw to position, is also wrapped
The lower section for including lower screw and the side plate 514 offers a narrow shape elongated slot.Described second to adjust screw lower screw
It is threadedly coupled across the narrow shape elongated slot of the side plate 514 with the sliding block 512.In adjustment process, if it is desired, can first be unclamped
Two adjust the lower screw of screw, then the adjusting of the position to hall device in the width direction of bearing substrate 1 to position, adjust
After the completion, the second lower screw that screw is adjusted to position can be screwed again.
In other variant embodiments, described second to position adjust screw could alternatively be bolt or can with side plate 514 into
The card column that row multistage is fixed or the other structures with similar functions.
And the third adjusts screw to position including an at least third to position regulating member 4z.The third is adjusted to position
Screw is threadedly coupled with 13 slot bottom of pressure measurement slot, and it through 13 slot bottom of pressure measurement slot and withstands the sliding block
512 bottoms.Direction is screwed by edge as a result, and rotates third to position adjusting screw, so that third is adjusted screw to position and up moves top
High sliding block 512；Direction can also be unscrewed by edge and rotates third to position adjusting screw, so that third is adjusted screw to position and moved drop down
The undertaking height of low sliding block 512, to realize that the position to hall device in the short transverse of bearing substrate 1 is adjusted.
In other variant embodiments, the third to position adjust screw could alternatively be bolt or can with side plate 514 into
The card column that row multistage is fixed or the other structures with similar functions.
Referring to Fig. 4, being produced during to avoid sliding block 512 from being conditioned position toward the length direction of bearing substrate 1 is mobile
It gives birth to deviation and influences measurement accuracy, as a kind of more preferably technical solution, each position regulating mechanism further includes one for avoiding
The limit plate 4a that sliding block 512 moves on 1 length direction of bearing substrate.Limit plate 4a is set to the installation where its regulating mechanism
Between the sliding block 512 of mechanism and the magnet mounting base 14, and one is formed for accommodating sliding block 512 with the installation backup plate 511
Limit space；And hall device is hung between limit plate 4a and magnet mounting base 14 by the pin 311.
Further, for convenience of the installation and arrangement of the conducting wire of hall device, as a kind of more preferably technical solution, Mei Yian
Installation backup plate in mounting mechanism offers the wire guide (a and b) through its top and bottom.
Preferably, in the present embodiment, sliding block 512 is just sandwiched between the limit plate 4a and the installation backup plate 511
Between.
Referring to Fig. 5, for the displacement for causing magnet mounting base 14 to move down because load beam 12 bears load
It is limited, namely the displacement that limitation 2 maximum of magnet moves down, to reach the maximum load bearing capacity size to load beam 12
Control, to realize the control to the range of pressure sensor of the invention, as a kind of more preferably technical solution, base of the present invention
In the beam type pressure sensor of Hall effect further include overload protecting mechanism 6.The overload protecting mechanism 6 is set to the magnet
The underface of mounting base 14, to limit because load beam 12 bears the displacement for causing magnet mounting base 14 to move down after load.
Referring to Fig. 6, in the present embodiment, the overload protecting mechanism 6 is made of two overload protection screws 61.Described two
Overload protection screw 61 is threadedly coupled with the slot bottom of the pressure measurement slot 13, is hung down on the outside of the slot bottom of pressure measurement slot 13
The straight slot bottom inside through pressure measurement slot 13, and be located at immediately below the magnet mounting base 14, it is opposite with magnet mounting base 14
Setting.By screwing two overload protection screws 61, shortens the distance between itself and magnet mounting base 14, reduce this hair to reach
The purpose of the measuring range of bright pressure sensor.By unscrewing two overload protection screws 61, increase itself and magnet mounting base 14
The distance between, to achieve the purpose that the measuring range for increasing pressure sensor of the invention.
In addition, the two overload protections screw 61 may be replaced by bolt or have more in other variant embodiments
The card column etc. of grade snap-in structure.
It is installed referring to Fig. 7, being equipped with a pallet as a further improvement of the present invention, in the middle part of the top surface of the load beam 12
Seat 121, for carrying tested load.In the present embodiment, the pallet mounting base 121 is a cuboid.
Further, pressure sensor of the invention is about the symmetrical structure of its middle line.Also, in the present embodiment
In, in terms of circuit structure, the output circuit of two hall devices 31 and 32 is connected, its output sensitivity is thus made to improve one
Times, and improve the linear characteristic of input and output.
Compared with the existing technology, the present invention is based on the beam type pressure sensor of Hall effect by bearing substrate, magnet and
The pressure change that hall device receives pressure sensor is converted into the variation in magnetic field, and based on the principle of Hall effect by magnetic field
Variation be converted to the variation of voltage signal, the weight of the object carried is achieved in a kind of untouchable measurement, from
And improve measurement accuracy, and substantially increase the controllability and controllability of sensor, have production cost is low, reliable performance,
Measure the beneficial effects such as controllable and easy to use.
The invention is not limited to above embodiment, if not departing from the present invention to various changes or deformation of the invention
Spirit and scope, if these changes and deformation belong within the scope of claim and equivalent technologies of the invention, then this hair
It is bright to be also intended to encompass these changes and deformation.
Claims (8)
1. a kind of beam type pressure sensor based on Hall effect, it is characterised in that: including bearing substrate, magnet and two Hall devices
Part；It hollows out to form pedestal, positioned at the load beam of base top and between pedestal and load beam in the middle part of the bearing substrate
And pressure measurement slot connected with the outside world；Extend in the middle part of the load soffit toward pedestal direction, and the shape in pressure measurement slot
At a magnet mounting base；
The magnet is installed on the magnet mounting base；
Two hall device is installed on the pressure measurement slot, and is located at the opposite sides of the magnet；
It further include being respectively used to adjust the two positions regulating mechanism of the position of two hall device and for installing institute respectively
State two installing mechanisms of two hall devices；
The two positions regulating mechanism is respectively arranged in two installing mechanism, and each position regulating mechanism includes for edge
The first of the position of the bearing substrate length direction adjusting hall device is to position regulating member, and/or for along the carrying
The second of the position of matrix width direction adjusting hall device is to position regulating member, and/or for along the bearing substrate height
Direction adjusts the third of the position of hall device to position regulating member；
Each installing mechanism includes one from a lateral edge bearing substrate length direction in the pressure measurement slot slot toward magnet mounting base
The installation backup plate that extends to form, one be set to sliding block between the magnet mounting base and the installation backup plate, a pressure foot and
Both side plate；And pin is equipped at the top of each hall device；
The pressure foot is installed on the top of the sliding block by first to position regulating member；
The pin is folded between the pressure foot and the sliding block, and hall device by the pin be hung at sliding block and
Between magnet mounting base；The pin is adjusted by the position of sandwiched length direction, realization pair to position regulating member by first
Hall device is adjusted in the position on bearing substrate length direction；
The both side plate is respectively arranged in the two opposite outer of the installation backup plate and the sliding block, and it passes through one second respectively
It is connected with the slide block to position regulating member；Drive the sliding block in bearing substrate width direction to position regulating member by second
Upper movement is realized and is adjusted to hall device in the position in bearing substrate width direction；
The third is connect through the pressure measurement slot slot bottom with the slider bottom to position regulating member；By third to position
Regulating member drives the sliding block to move in bearing substrate short transverse, realizes to hall device in bearing substrate short transverse
On position adjust.
2. the beam type pressure sensor according to claim 1 based on Hall effect, it is characterised in that: described first to position
Regulating member adjusts screw to position including at least one first；Described first adjusts screw to position is threadedly coupled with the sliding block, and
It is through the pressure foot and pressure foot is made to compress the pin.
3. the beam type pressure sensor according to claim 1 based on Hall effect, it is characterised in that: described second to position
Regulating member adjusts screw to position including at least one second；Described second adjusts screw to position is threadedly coupled with the side plate, and
It is abutted through the side plate and with the sliding block.
4. the beam type pressure sensor according to claim 1 based on Hall effect, it is characterised in that: the third is to position
Regulating member adjusts screw to position including an at least third；The third adjusts screw and the pressure measurement slot slot bottom spiral shell to position
Line connection, and it through the pressure measurement slot slot bottom and withstands the slider bottom.
5. according to the described in any item beam type pressure sensors based on Hall effect of claim 2~4, it is characterised in that: every
One position adjusting mechanism further includes a limit plate for avoiding sliding block from moving on bearing substrate length direction；Limit plate setting
Between the sliding block and the magnet mounting base of the installing mechanism where its regulating mechanism, and one is formed with the installation backup plate and is used
In the limit space for accommodating sliding block；And hall device is hung between limit plate and magnet mounting base by the pin.
6. the beam type pressure sensor according to claim 1 based on Hall effect, it is characterised in that: further include that overload is protected
Protect mechanism；The overload protecting mechanism is set to the underface of the magnet mounting base, to limit because load beam is born after loading
The displacement for causing magnet mounting base to move down.
7. the beam type pressure sensor according to claim 1 based on Hall effect, it is characterised in that: the load beam
A pallet mounting base is equipped in the middle part of top surface, for carrying tested load.
8. the beam type pressure sensor according to claim 1 based on Hall effect, it is characterised in that: the two Halls device
Part is arranged in parallel, and is respectively parallel to the opposite sides of the magnet.
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| CN201610817824.7A CN106197626B (en) | 2016-09-12 | 2016-09-12 | A kind of beam type pressure sensor based on Hall effect |
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| CN106197626B true CN106197626B (en) | 2019-01-04 |
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| CN101021450A (en) * | 2007-03-26 | 2007-08-22 | 应城市新世纪摩托车配件有限责任公司 | Internal combustion engine negative pressure sensor |
| CN201611295U (en) * | 2009-12-30 | 2010-10-20 | 成都威力生生物科技有限公司 | Gas pressure sensor |
| CN103063353A (en) * | 2011-10-19 | 2013-04-24 | 常州三恒电器有限公司 | Gas pressure sensor |
| CN202770580U (en) * | 2012-09-21 | 2013-03-06 | 浙江华地电子有限公司 | Pressure sensor |
| CN103350692A (en) * | 2013-08-08 | 2013-10-16 | 昆山市兴利车辆科技配套有限公司 | Method of electronic parking braking of novel tension sensor |
| CN104964786A (en) * | 2015-06-08 | 2015-10-07 | 北京交通大学 | Magnetic liquid micropressure sensor using Hall detection method |
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