CN106124802A - A kind of acceleration measurement method and hydrargyrum acceleration transducer - Google Patents
A kind of acceleration measurement method and hydrargyrum acceleration transducer Download PDFInfo
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- CN106124802A CN106124802A CN201610149162.0A CN201610149162A CN106124802A CN 106124802 A CN106124802 A CN 106124802A CN 201610149162 A CN201610149162 A CN 201610149162A CN 106124802 A CN106124802 A CN 106124802A
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- insulation tube
- acceleration
- hydrargyrum
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P15/00—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration
- G01P15/02—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration by making use of inertia forces using solid seismic masses
- G01P15/08—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration by making use of inertia forces using solid seismic masses with conversion into electric or magnetic values
- G01P15/12—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration by making use of inertia forces using solid seismic masses with conversion into electric or magnetic values by alteration of electrical resistance
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- General Physics & Mathematics (AREA)
- Pressure Sensors (AREA)
- Measuring Fluid Pressure (AREA)
Abstract
The present invention relates to acceleration detection field, particularly to a kind of acceleration measurement method and hydrargyrum acceleration transducer.The invention discloses a kind of hydrargyrum acceleration transducer, including the insulation tube sealed, it is arranged on two mercury columns inside insulation tube, the dielectric scapus immiscible with hydrargyrum being arranged between two mercury columns, two pairs of electrodes to and magnetic field generation device, said two mercury column and dielectric scapus are not filled with insulation tube, the described two pairs of electrodes two ends to being separately positioned in insulation tube, described two pairs of electrodes to respectively with two mercury column part contact connect and compose two galvanic circles respectively with external power supply, the flow direction of the electric current of described two pairs of electrodes pair is perpendicular to insulation tube radially on the contrary and all, described magnetic field generation device is arranged on outside insulation tube, insulation tube radially the most vertical with insulation tube is run through in its magnetic field produced.The invention also discloses a kind of acceleration measurement method.The present invention is the highest to material requirements, design simple, Miniaturized, low cost.
Description
Technical field
The invention belongs to acceleration detection field, accelerate more particularly to a kind of acceleration measurement method and hydrargyrum
Degree sensor.
Background technology
Acceleration transducer is a kind of device for measuring moving object accekeration.Acceleration transducer is wide
General it is applied to auto industry, aircraft industry, machinery vibration analysis etc..
The operation principle of acceleration transducer is usually: when inertia mass is by extraneous acceleration effect, matter
Amount will produce displacement, and then conversion obtains acceleration.The same with other sensors, acceleration transducer leads to
Cross the acceleration that other amounts easily measured obtain being difficult to directly measure indirectly.It is the most mostly
It is made up of elastic sensing element, testing circuit, housing and supplementary structure 3 part, reference: high-g level microcomputer
The current situation and development of tool acceleration transducer, Chinese journal of scientific instrument, 2008,29 (04): 892-895.
Existing acceleration transducer directly measures inertia mass relative displacement or indirect detection spring deflection,
The accekeration of testee is obtained finally by a series of transformational relation.General acceleration transducer is divided into
Pressure resistance type, piezoelectric type, condenser type and heat convection type, reference: high-impact acceleration sensor current situation and
Trend, detects and controls journal, and 2013,35 (04): 6-10, the acceleration transducer of these types uses
Micromechanical process designs, and has a feature of miniaturization, but the design of the acceleration transducer of these types is complicated,
Material category requires strict and manufacturing cost is of a relatively high, additionally, severe in some large impact or high capacity
In the case of, be not suitable for using.
Summary of the invention
It is an object of the invention to provide a kind of inertia utilizing hydrargyrum and conduction property for solving the problems referred to above
Be designed, thus the highest to material requirements, design simple, Miniaturized, low cost and be useful in some
The acceleration measurement method of the harsh conditions of large impact or high capacity and hydrargyrum acceleration transducer.
To this end, the invention discloses a kind of acceleration measurement method, two pairs of electrodes pair, and two are set diametrically
Electrode to being loaded opposite polarity voltage respectively, two pairs of electrodes between two mercury columns are set, make this two
Individual mercury column is spaced by an insulator and insulate, and makes this insulator that length can not be occurred diametrically to change, with
Time make two mercury columns all can respectively with two pairs of electrodes to part contact, and by electrode between electrode pass through
Mercury column is electrically connected, and setting direction is perpendicular to radially and runs through the magnetic field of hydrargyrum, has when diametrically and adds
When velocity component produces, two mercury columns and insulator are subjected to displacement the most diametrically, change respectively
The internal mercury column of two pairs of electrodes and the contact area of electrode pair, become by detecting the resistance of two pairs of electrodes pair respectively
Change situation, conversion draws acceleration diametrically；When not having acceleration diametrically, mercury column passes through
Flow through and reset under the Lorentz force action that electric current therein obtains in magnetic field.
Further, two pairs of electrodes on apply identical magnitude of voltage, detection flows separately through two pairs of electrodes pair
Size of current situation of change, with conversion draw acceleration.
Further, difference channel detection is used to flow separately through the size of current situation of change of two pairs of electrodes pair,
Acceleration is drawn with conversion.
The invention also discloses a kind of hydrargyrum acceleration transducer, including the insulation tube sealed, be arranged on insulation
Two mercury columns inside pipe, the dielectric scapus immiscible with hydrargyrum being arranged between two mercury columns,
Two pairs of electrodes to and magnetic field generation device, said two mercury column and dielectric scapus be not filled with insulation tube, institute
State the two pairs of electrodes two ends to being separately positioned in insulation tube, described two pairs of electrodes to respectively with two mercury columns
Part contact also connects and composes two galvanic circles respectively with external power supply, the electric current of described two pairs of electrodes pair
Flowing to be perpendicular to insulation tube on the contrary and all radially, described magnetic field generation device is arranged on outside insulation tube, and it produces
Magnetic field run through insulation tube radially the most vertical with insulation tube.
Further, described insulation tube is vacuum tube, and inner cavity surface is shiny surface.
Further, described iknsulating liquid is glycerol.
Further, the described electrode sheet metal to being oppositely arranged for two panels, described sheet metal is and insulation tube
The arc metal plate that inner chamber matches.
Further, also including the shell of both ends open, grip block and capping, described insulation tube is by clamping
Block is unsettled to be fixed in the enclosure, and described magnetic field generation device is arranged in the enclosure, and sets by grip block is fixing
Putting outside insulation tube, described capping seals the opening of shell.
Further, described two pairs of electrodes is to being connected with same power supply respectively.
Further, also include that difference channel, the outfan of said two galvanic circle connect difference channel respectively
Two inputs.
The Advantageous Effects of the present invention:
The present invention utilizes the inertia of hydrargyrum and conduction property to be designed, and uses the principle of difference to flowing through hydrargyrum
Electric current carry out contrast process, and then conversion obtains accekeration, the highest to material requirements, design is simple,
Miniaturized, manufacture simplicity, low cost, accuracy of detection height and be useful in the evil of some large impact or high capacity
Bad situation.
Accompanying drawing explanation
Fig. 1 is the structural representation of the embodiment of the present invention；
Fig. 2 is the internal structure schematic diagram of the embodiment of the present invention；
Fig. 3 is the elevational schematic of the embodiment of the present invention；
Fig. 4 is the grip block schematic diagram of the embodiment of the present invention；
Fig. 5 is the simplification circuit connection diagram of the embodiment of the present invention.
Detailed description of the invention
In conjunction with the drawings and specific embodiments, the present invention is further described.
A kind of acceleration measurement method, arranges two pairs of electrodes pair diametrically, and two electrodes is to being loaded respectively
Opposite polarity voltage, two pairs of electrodes between two mercury columns are set, make the two mercury column exhausted by one
Edge body is spaced and insulate, and makes this insulator that length can not be occurred diametrically to change, concrete, right by two
The specification of electrode pair is set to identical, and two insulators are dielectric scapus, and liquid is preferably glycerol.Make simultaneously
Two mercury columns all can respectively with two pairs of electrodes to part contact, and by electrode between electrode pass through hydrargyrum
Post is electrically connected, and setting direction is perpendicular to radially and runs through the magnetic field of hydrargyrum, has acceleration when diametrically
When component produces, two mercury columns and insulator are subjected to displacement the most diametrically, change two respectively right
The internal mercury column of electrode and the contact area of electrode pair, by detecting the resistance variations feelings of two pairs of electrodes pair respectively
Condition, conversion draws acceleration diametrically；When not having acceleration diametrically, mercury column is by flowing through
Reset under the Lorentz force action that electric current therein obtains in magnetic field.
Concrete, two pairs of electrodes on apply identical magnitude of voltage, flow separately through two pairs of electrodes by detection
To size of current situation of change, with conversion draw acceleration.In the present embodiment, can be by two pairs of electrodes pair
It is connected on same power supply, to ensure that voltage is identical.
Further, using the size of current situation of change of difference channel detection two pairs of electrodes pair, conversion draws
Acceleration.Using difference channel, can obtain bigger signal output, accuracy of detection is higher.
As shown in Figures 1 to 5, the invention also discloses a kind of hydrargyrum acceleration transducer, including seal
Insulation tube 1, (two mercury columns 3 are positioned at insulation tube 1 to be arranged on two mercury columns 3 inside insulation tube 1
Both sides), the dielectric scapus 4 immiscible with hydrargyrum that be arranged between two mercury columns 3, two pairs of electrodes pair
2 (in this specific embodiment, in order to make conversion easier, it is identical that two pairs of electrodes is preferably specification to 2) and magnetic
Field generator 7.In this specific embodiment, insulation tube 1 is glass tubing, naturally it is also possible to be to be insulated by other
The pipe that material is made such as pottery, the caliber of glass tubing 1 needs little to certain degree, makes hydrargyrum and glass tubing 1
The surface tension of internal chamber wall and suffered gravitational equilibrium, can maintain column, the i.e. diameter of mercury column 3 equal to glass
The intracavity diameter of glass pipe 1, glass tubing 1 is vacuum tube, and its inner cavity surface is shiny surface, reduces mercury column 3 and exists
The frictional force of movement in glass tubing 1, improves accuracy in detection.Iknsulating liquid is preferably glycerol, certainly,
In other embodiments, it is also possible to be the liquid immiscible with hydrargyrum of other insulation.Magnetic field generation device 7 is
Two pieces of magnetic sheets being made up of strong magnetic permanent-magnet.
Said two mercury column 3 and dielectric scapus 4 are not filled with glass tubing 1, i.e. when two mercury columns 3 are with exhausted
When edge liquid column 4 is in initial position, two mercury columns 3 two ends with glass tubing 1 respectively also have one section away from
From.Described two pairs of electrodes is separately positioned on the two ends of glass tubing 1 inner chamber to 2, and when two mercury column 3 Hes
When dielectric scapus 4 is in initial position, two pairs of electrodes to 2 respectively with two mercury column 3 part contact and
Contact area is identical and electrode is electrically connected the electrode in 2, and two pairs of electrodes passes through wire respectively to 2
Connect and compose two galvanic circles with extraneous power supply VCC, described two pairs of electrodes to 2 electric current flow to phase
Instead and being all perpendicular to the radial direction of glass tubing 1, the electric current of two galvanic circles is input to two of difference channel 11
Input, the current differential of two galvanic circles of outfan output of difference channel 11.In this specific embodiment,
Electrode is to 2 sheet metals being oppositely arranged for two panels, and described sheet metal is the arc matched with glass tubing 1 inner chamber
Shape sheet metal.Two pairs of electrodes can be to be connected respectively on two identical power supply VCC of voltage 2, certainly,
In order to ensure that voltage is identical, make accuracy in detection higher, two pairs of electrodes to 2 respectively with same power supply
VCC connects, but opposite polarity, as shown in Figure 5.
Further, also include that the shell 5 of both ends open, grip block 6 and capping 9, described glass tubing 1 are led to
Crossing that grip block 6 is unsettled to be fixed in shell 5, in this specific embodiment, grip block 6 is made up of insulant,
Quantity is 4 pieces, and the two ends of glass tubing 1 are gripped by two pieces of grip blocks 6 respectively, and grip block 6 is provided with
The groove 61 matched with glass tubing 1 end, for entangling the end of glass tubing 1, grip block 6 also sets
Being equipped with the through hole 62 allowing wire pass, described magnetic sheet 7 is arranged in shell 1, and is supported by grip block 6
Being fixedly installed on the upper outer lower face surface of glass tubing 1, described capping 9 seals the opening of shell 1, uses screw
10 are fixed, and capping 9 is provided with installation portion, and installation portion is provided with the screw for installing, capping 9 with
Accommodate and be provided with pad 8 between block 6, for being held out against by grip block 6, prevent it from moving.
Detection process:
Connect the two pairs of electrodes power supply VCC to 2, when there is no acceleration, two mercury columns 3 and two pairs of electrodes
Identical to the contact area of 2, the size of current flowing through two galvanic circles is identical, and difference channel output valve is 0；
When there being acceleration, two mercury columns 3 can produce displacement under effect of inertia so that it is in a mercury column 3
With electrode to 2 contact area increase, and then the electric current making to flow through this galvanic circle increases；Another hydrargyrum
The contact area reduction to 2 of post 3 and electrode, the electric current flow through in corresponding galvanic circle reduces, difference channel
The current differential of two galvanic circles of output, i.e. can get accekeration through certain conversion relation.Work as acceleration
After degree disappears, owing to the size of current of two mercury columns 3 is inconsistent and in opposite direction, magnetic field produces phase
To and unequal Lorentz force, under the effect of Lorentz force, two mercury columns 3 move to initial position,
Until returning to initial position, two mercury columns 3 reach dynamic balance, no longer move.
Above-described embodiment uses the curent change situation of two galvanic circles of detection, converts and obtains acceleration,
But it is not limited to this, in other embodiments, it is also possible to two galvanic circles are applied constant-current source, by detection
The change in voltage situation of two galvanic circles, converts and obtains acceleration.Above-described embodiment uses difference channel
Detect the curent change situation of two galvanic circles so that output signal is bigger, accuracy of detection and accuracy
Higher, but in other embodiments, it is also possible to not having difference channel, directly two galvanic circles of detection is each
The circuit variation situation in individual loop, then carry out conversion and obtain acceleration.Above-described embodiment uses and flows through hydrargyrum
The Lorentz force in electric current magnetic field again makes hydrargyrum reset, certainly, in other embodiments, it is possible to use gravity
Hydrargyrum is made to reset.
Although specifically show and describe the present invention in conjunction with preferred embodiment, but those skilled in the art
Should be understood that in the spirit and scope of the present invention limited without departing from appended claims, in form
Above and the present invention can be made a variety of changes in details, be protection scope of the present invention.
Claims (10)
1. an acceleration measurement method, it is characterised in that: two pairs of electrodes pair is set diametrically, and two to electricity
Extremely to being loaded opposite polarity voltage respectively, two pairs of electrodes between two mercury columns are set, make the two
Mercury column is spaced by an insulator and insulate, and makes this insulator that length can not be occurred diametrically to change, simultaneously
Make two mercury columns all can respectively with two pairs of electrodes to part contact, and by electrode between electrode pass through water
Silver post is electrically connected, and setting direction is perpendicular to radially and runs through the magnetic field of hydrargyrum, has acceleration when diametrically
When degree component produces, two mercury columns and insulator are subjected to displacement the most diametrically, change two respectively
Mercury column internal to electrode and the contact area of electrode pair, by detecting the resistance variations of two pairs of electrodes pair respectively
Situation, conversion draws acceleration diametrically；When not having acceleration diametrically, mercury column is by stream
Reset under the Lorentz force action that electric current therein obtains in magnetic field.
Acceleration measurement method the most according to claim 1, it is characterised in that: two pairs of electrodes on
Applying identical magnitude of voltage, detection flows separately through the size of current situation of change of two pairs of electrodes pair, to convert
Go out acceleration.
Acceleration measurement method the most according to claim 2, it is characterised in that: use difference channel inspection
Survey the size of current situation of change flowing separately through two pairs of electrodes pair, draw acceleration with conversion.
4. a hydrargyrum acceleration transducer, it is characterised in that: include the insulation tube sealed, be arranged on insulation
Two mercury columns inside pipe, the dielectric scapus immiscible with hydrargyrum being arranged between two mercury columns,
Two pairs of electrodes to and magnetic field generation device, said two mercury column and dielectric scapus be not filled with insulation tube, institute
State the two pairs of electrodes two ends to being separately positioned in insulation tube, described two pairs of electrodes to respectively with two mercury columns
Part contact also connects and composes two galvanic circles respectively with external power supply, the electric current of described two pairs of electrodes pair
Flowing to be perpendicular to insulation tube on the contrary and all radially, described magnetic field generation device is arranged on outside insulation tube, and it produces
Magnetic field run through insulation tube radially the most vertical with insulation tube.
Hydrargyrum acceleration transducer the most according to claim 4, it is characterised in that: described insulation tube is
Vacuum tube, inner cavity surface is shiny surface.
Hydrargyrum acceleration transducer the most according to claim 4, it is characterised in that: described iknsulating liquid
For glycerol.
Hydrargyrum acceleration transducer the most according to claim 4, it is characterised in that: described electrode to for
The sheet metal that two panels is oppositely arranged, described sheet metal is the arc metal plate matched with insulation tube inner chamber.
Hydrargyrum acceleration transducer the most according to claim 4, it is characterised in that: also include that two ends are opened
Mouthful shell, grip block and capping, described insulation tube by grip block unsettled fixing in the enclosure, described magnetic
Field generator is arranged in the enclosure, and is fixedly installed on outside insulation tube by grip block, and described capping seals
The opening of shell.
Hydrargyrum acceleration transducer the most according to claim 4, it is characterised in that: described two pairs of electrodes
To being connected with same power supply respectively.
10. according to the hydrargyrum acceleration transducer described in claim 4 or 9, it is characterised in that: it is poor also to include
Parallel circuit, the outfan of said two galvanic circle connects two inputs of difference channel respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610149162.0A CN106124802B (en) | 2016-03-16 | 2016-03-16 | Acceleration measuring method and mercury acceleration sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610149162.0A CN106124802B (en) | 2016-03-16 | 2016-03-16 | Acceleration measuring method and mercury acceleration sensor |
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| Publication Number | Publication Date |
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| CN106124802A true CN106124802A (en) | 2016-11-16 |
| CN106124802B CN106124802B (en) | 2022-06-28 |
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| CN201610149162.0A Active CN106124802B (en) | 2016-03-16 | 2016-03-16 | Acceleration measuring method and mercury acceleration sensor |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108761129A (en) * | 2018-08-27 | 2018-11-06 | 北京梦之墨科技有限公司 | A kind of acceleration transducer |
| WO2020150829A1 (en) * | 2019-01-24 | 2020-07-30 | Uti Limited Partnership | Particle based accelerometer |
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| CN205426952U (en) * | 2016-03-16 | 2016-08-03 | 英麦科（厦门）微电子科技有限公司 | Mercury acceleration sensor |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108761129A (en) * | 2018-08-27 | 2018-11-06 | 北京梦之墨科技有限公司 | A kind of acceleration transducer |
| CN108761129B (en) * | 2018-08-27 | 2024-02-23 | 北京梦之墨科技有限公司 | Acceleration sensor |
| WO2020150829A1 (en) * | 2019-01-24 | 2020-07-30 | Uti Limited Partnership | Particle based accelerometer |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106124802B (en) | 2022-06-28 |
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