CN209877879U - Angular displacement magnetic sensor with multiple signal outputs - Google Patents
Angular displacement magnetic sensor with multiple signal outputs Download PDFInfo
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- CN209877879U CN209877879U CN201920478594.5U CN201920478594U CN209877879U CN 209877879 U CN209877879 U CN 209877879U CN 201920478594 U CN201920478594 U CN 201920478594U CN 209877879 U CN209877879 U CN 209877879U
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Abstract
The utility model discloses an angular displacement magnetic sensor with multi-signal output, which comprises a shell and a hardware signal circuit, wherein a seal bearing assembly is arranged in a shaft hole of the shell, a power input shaft is arranged on the seal bearing assembly, a magnetic steel rotating shaft seat is arranged in a magnetic field cavity, the magnetic steel rotating shaft seat is provided with a magnetic steel mounting groove, a connecting rotating shaft of the power input shaft is arranged in the seal bearing assembly in a matching way, the magnetic steel rotating shaft seat is fixedly connected with the connecting rotating shaft of the power input shaft, and rare earth magnetic steel is fixedly arranged in the magnetic steel mounting groove; the hardware signal circuit is provided with a circuit substrate, and a connecting part of the circuit substrate is fixedly connected with the shell through a screw A; the casing is externally closed and covered by a cover plate, the hardware signal circuit comprises a power supply voltage stabilizing module, a signal acquisition module, an A/D conversion module, a data processing module and a plurality of D/A conversion modules, and the signal acquisition module corresponds to the rare earth magnetic steel. The utility model discloses can realize multiple signal output effect, have advantages such as function diversification, the comprehensive accurate of data.
Description
Technical Field
The utility model relates to a sensor especially relates to an angle displacement magnetic sensor of many signal output.
Background
The wire-wound potentiometer and the conductive plastic potentiometer are used for measuring angular displacement of the servo motor, the absolute position of the servo motor is fed back, the electric brush slides on the winding and the resistor body to change the change of the resistance value, and then the voltage generates corresponding change. The electric brush moves back and forth on the surfaces of the winding and the resistor body, the surface of the winding is worn more obviously as the service life is longer, and the resistance value of the corresponding position is changed, so that the parameters of linearity and the like of the product are poor. If the product is seriously wet or dusty, the stability of the output signal of the product is directly influenced, and even a breakpoint phenomenon can occur.
Most potentiometers in the existing market mainly adopt a single output voltage analog signal, mainly adopt a wire-wound potentiometer and a conductive plastic potentiometer, and the product needs to be redesigned and remanufactured after related technical parameters of the product are changed, so that the requirements of users cannot be met. The non-contact angular displacement sensor mainly has the advantages of small volume, high sensitivity, no break point, high reliability, infinite theoretical service life and the like, and is widely applied to the fields of space shuttles, ships, automobiles and the like. The existing non-contact angular displacement sensor has single output signal and single application. Therefore, the design of a non-contact angular displacement magnetic sensor which supports software on-line upgrading, has high reliability and infinite theoretical service life and outputs multiple signals is urgent to solve.
SUMMERY OF THE UTILITY MODEL
Aiming at the defects existing in the prior art, the utility model aims to provide an angular displacement magnetic sensor with multi-signal output, which can convert the angular displacement change into the change of the rotating magnetic field of rare earth magnetic steel, convert the change into digital signals after being collected by a signal collecting module, then process the digital signals to obtain the processed digital signals and output the processed digital signals, and also can convert the digital signals into various analog electric signals to output so as to meet different requirements; the utility model discloses can realize multiple signal output effect, have advantages such as function diversification, the comprehensive accurate of data.
The purpose of the utility model is realized through the following technical scheme:
an angular displacement magnetic sensor with multiple signal outputs comprises a shell, a cover plate, rare earth magnetic steel and a hardware signal circuit, wherein a magnetic field cavity is formed in the shell, a shaft hole communicated with the magnetic field cavity is formed in the shell, a seal bearing assembly is installed in the shaft hole of the shell, a power input shaft is installed on the seal bearing assembly and provided with a connecting rotating shaft, a magnetic steel rotating shaft seat is arranged in the magnetic field cavity and provided with a magnetic steel mounting groove, the connecting rotating shaft of the power input shaft is installed in the seal bearing assembly in a matched mode, the magnetic steel rotating shaft seat and the connecting rotating shaft are fixedly connected through a screw B, and the rare earth magnetic steel is fixedly installed in the magnetic steel mounting groove of the magnetic steel rotating shaft seat; the hardware signal circuit is provided with a circuit substrate, the outer edge of the circuit substrate is a connecting part, the connecting part of the circuit substrate is fixedly connected with the shell through a plurality of screws A, and the hardware signal circuit completely seals the magnetic field cavity; the outer part of the shell is closed and covered with a cover plate, and the cover plate completely contains a hardware signal circuit; the hardware signal circuit comprises a signal acquisition module, an A/D conversion module, a data processing module and a plurality of D/A conversion modules, wherein the signal acquisition module corresponds to the rare earth magnetic steel, the signal acquisition module, the A/D conversion module and the data processing module are sequentially connected, and the data processing module is respectively connected with the D/A conversion modules.
In order to realize better the utility model discloses, be equipped with the packing ring between the magnet steel pivot seat outside and the sealed bearing subassembly outside.
Preferably, the sealed bearing assembly comprises two sealed bearings, the two sealed bearings being located alongside one another.
Preferably, the magnetic steel rotating shaft seat is provided with a screw countersunk hole communicated with the magnetic steel mounting groove, and the head of the screw B is matched and positioned in the screw countersunk hole.
Preferably, a cover plate cavity is arranged in the cover plate, the cover plate is provided with a plurality of groups of digital signal output lines and a plurality of groups of analog signal output lines, all the digital signal output lines penetrate through the cover plate and are connected with a plurality of interface modules of different communication protocols in a one-to-one corresponding mode, and all the analog signal output lines are connected with all the D/A conversion modules in a one-to-one corresponding mode.
Compared with the prior art, the utility model, have following advantage and beneficial effect:
(1) the utility model discloses can realize the unsettled collection magnetic field signal of angle sensing signal collection module, replace current wire-wound potentiometre and conductive plastic potentiometre in the gliding motion of brush friction on winding and resistive element, can not receive environmental impact such as vibration, humidity, salt fog.
(2) The utility model can convert the angular displacement change into the change of the rotating magnetic field of the rare earth magnetic steel, convert the change into the digital signal after being collected by the signal collecting module, then process the digital signal to obtain the processed digital signal and output the digital signal in a one-to-one correspondence way through the interface modules of a plurality of different communication protocols by different communication protocols, and also convert the digital signal into a plurality of analog electric signals to output the digital signal so as to meet different requirements; the utility model discloses can realize multiple signal output effect, have advantages such as function diversification, the comprehensive accurate of data.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Wherein, the names corresponding to the reference numbers in the drawings are:
1-hardware signal circuit, 11-connecting part, 2-shell, 21-magnetic field cavity, 3-cover plate, 4-power input shaft, 41-connecting rotating shaft, 5-magnetic steel rotating shaft seat, 6-gasket, 7-sealing bearing, 8-rare earth magnetic steel, 9-screw A and 10-screw B.
Detailed Description
The present invention will be described in further detail with reference to examples.
Examples
As shown in fig. 1, an angle displacement magnetic sensor of many signal output, including casing 2, apron 3, tombarthite magnet steel 8 and hardware signal circuit 1, casing 2 is inside to have magnetic field chamber 21, and casing 2 opens the shaft hole that has and is linked together with magnetic field chamber 21, installs sealed bearing assembly in casing 2's the shaft hole, the utility model discloses preferred sealed bearing assembly includes two sealed bearings 7, and two sealed bearings 7 set up each other side by side. The utility model discloses preferred 2 surfaces of casing are equipped with the cladding material, can prevent oxidation and rust. Install power input shaft 4 on the seal bearing subassembly, power input shaft 4 has connection pivot 41, be equipped with magnet steel pivot seat 5 in the magnetic field cavity 21, magnet steel pivot seat 5 has the magnet steel mounting groove, the cooperation of power input shaft 4's connection pivot 41 is installed in the seal bearing subassembly, magnet steel pivot seat 5 is connected fixedly through screw B10 with connection pivot 41, fixed mounting has tombarthite magnet steel 8 in the magnet steel mounting groove of magnet steel pivot seat 5. Hardware signal circuit 1 has the circuit substrate, and the circuit substrate outward flange is connecting portion 11, and connecting portion 11 of circuit substrate is connected fixedly with casing 2 through a plurality of screw A9, and hardware signal circuit 1 closes magnetic field cavity 21 completely. The casing 2 is externally closed and covered with a cover plate 3, and the cover plate 3 completely contains the hardware signal circuit 1.
The hardware signal circuit 1 comprises a signal acquisition module, an A/D conversion module, a data processing module, a plurality of interface modules with different communication protocols and a plurality of D/A conversion modules, wherein the signal acquisition module corresponds to the rare earth magnetic steel 8, the signal acquisition module, the A/D conversion module and the data processing module are sequentially connected, and the data processing module is respectively connected with the D/A conversion module and the interface modules. The utility model discloses a hardware signal circuit 1 still includes constant voltage power supply module, and constant voltage power supply module is connected with the signal acquisition module electricity, and constant voltage power supply module is used for carrying out steady voltage processing to the power. The power input shaft 4 is connected with the rotating shaft 41, power is output to the magnetic steel rotating shaft seat 5, the magnetic steel rotating shaft seat 5 drives the rare earth magnetic steel 8 to rotate, the rare earth magnetic steel 8 generates magnetic field change, therefore, the rare earth magnetic steel 8 can convert the power of the power input shaft 4 into magnetic field change signals, the signal acquisition module is used for acquiring the magnetic field change signals of the magnetic field cavity 21 in real time, the A/D conversion module is used for converting the magnetic field change signals into digital signals, the data processing module is used for filtering, amplifying, reducing noise and the like of the digital signals, the data processing module transmits the processed digital signals to the D/A conversion module, and the D/A conversion module converts the digital signals into analog voltage signals or analog current signals of various applications for people to use. The apron 3 is inside to have the apron chamber, and apron 3 is equipped with a plurality of digital signal output line and a plurality of analog signal output line, and all digital signal output lines run through the apron 3 and are connected with the different communication protocol's of a plurality of interface module one-to-one (the utility model discloses have a plurality of interface module, all digital signal output lines are connected with all interface module one-to-ones, and each interface module has different communication protocol), and all analog signal output lines run through apron 3 and all DA conversion module one-to-ones are connected.
As shown in fig. 1, a gasket 6 is arranged between the outer side of the magnetic steel rotating shaft seat 5 and the outer side of the seal bearing assembly, so that the sealing performance between the magnetic steel rotating shaft seat 5 and the seal bearing assembly can be improved.
The utility model discloses preferred magnet steel pivot seat 5 has the screw counter sink that is linked together with the magnet steel mounting groove, and screw B10's head cooperation is located the screw counter sink.
The working principle of the utility model is as follows:
the external angular displacement force is transmitted to the magnetic steel rotating shaft seat 5 through the power input shaft 4 and the connecting rotating shaft 41, the magnetic steel rotating shaft seat 5 drives the rare earth magnetic steel 8 to rotate, the rare earth magnetic steel 8 generates magnetic field change, and the rare earth magnetic steel 8 converts the power of the power input shaft 4 into a magnetic field change signal. The signal acquisition module acquires magnetic field change signals of the magnetic field cavity 21 in real time, the A/D conversion module converts the magnetic field change signals into digital signals, the data processing module performs filtering, amplification, noise reduction and other processing on the digital signals, and the processed digital signals or unprocessed digital signals are transmitted to the outside of the magnetic sensor through a digital signal output line so that people can obtain digital signal data related to angular displacement change. Meanwhile, the data processing module transmits the processed digital signals to the D/a conversion module, the D/a conversion module converts the digital signals into analog voltage signals or analog current signals for various applications, the embodiment has a plurality of D/a conversion modules, each D/a conversion module converts the digital signals into analog voltage signals or analog current signals of one type, and each D/a conversion module is electrically connected with one analog signal output line correspondingly, so that the processed digital signals are converted into analog voltage signals or analog current signals of different types and different application fields and are output respectively, and a multi-signal output function compatible with the digital signals and the analog electric signals can be realized.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (5)
1. An angular displacement magnetic sensor with multiple signal outputs is characterized in that: comprises a shell (2), a cover plate (3), rare earth magnetic steel (8) and a hardware signal circuit (1), the shell (2) is internally provided with a magnetic field cavity (21), the shell (2) is provided with a shaft hole communicated with the magnetic field cavity (21), a sealing bearing assembly is arranged in the shaft hole of the shell (2), a power input shaft (4) is arranged on the sealing bearing assembly, the power input shaft (4) is provided with a connecting rotating shaft (41), a magnetic steel rotating shaft seat (5) is arranged in the magnetic field cavity (21), the magnetic steel rotating shaft seat (5) is provided with a magnetic steel mounting groove, the connecting rotating shaft (41) of the power input shaft (4) is arranged in the sealing bearing assembly in a matching way, the magnetic steel rotating shaft seat (5) is fixedly connected with the connecting rotating shaft (41) through a screw B (10), rare earth magnetic steel (8) is fixedly arranged in a magnetic steel mounting groove of the magnetic steel rotating shaft seat (5); the hardware signal circuit (1) is provided with a circuit substrate, the outer edge of the circuit substrate is provided with a connecting part (11), the connecting part (11) of the circuit substrate is fixedly connected with the shell (2) through a plurality of screws A (9), and the hardware signal circuit (1) completely seals the magnetic field cavity (21); a cover plate (3) is covered outside the shell (2) in a closed manner, and the cover plate (3) completely contains the hardware signal circuit (1); the hardware signal circuit (1) comprises a signal acquisition module, an A/D conversion module, a data processing module, a power voltage stabilization module and a plurality of D/A conversion modules, wherein the signal acquisition module corresponds to the rare earth magnetic steel (8), the signal acquisition module, the A/D conversion module and the data processing module are sequentially connected, and the data processing module is respectively connected with the D/A conversion modules.
2. A multiple signal output angular displacement magneto-sensitive sensor according to claim 1, wherein: and a gasket (6) is arranged between the outer side of the magnetic steel rotating shaft seat (5) and the outer side of the sealing bearing assembly.
3. A multiple signal output angular displacement magneto-sensitive sensor according to claim 1 or 2, wherein: the sealing bearing assembly comprises two sealing bearings (7), and the two sealing bearings (7) are arranged side by side.
4. A multiple signal output angular displacement magneto-sensitive sensor according to claim 1, wherein: the magnetic steel rotating shaft seat (5) is provided with a screw countersunk hole communicated with the magnetic steel mounting groove, and the head of the screw B (10) is matched and positioned in the screw countersunk hole.
5. A multiple signal output angular displacement magneto-sensitive sensor according to claim 1, wherein: the novel cover plate is characterized in that a cover plate cavity is formed in the cover plate (3), a plurality of groups of digital signal output lines and a plurality of groups of analog signal output lines are arranged on the cover plate (3), all the digital signal output lines penetrate through the cover plate (3) to be connected with interface modules of a plurality of different communication protocols in a one-to-one correspondence mode, and all the analog signal output lines are connected with all the D/A conversion modules in a one-to-one correspondence mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920478594.5U CN209877879U (en) | 2019-04-10 | 2019-04-10 | Angular displacement magnetic sensor with multiple signal outputs |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920478594.5U CN209877879U (en) | 2019-04-10 | 2019-04-10 | Angular displacement magnetic sensor with multiple signal outputs |
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| CN209877879U true CN209877879U (en) | 2019-12-31 |
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| CN201920478594.5U Active CN209877879U (en) | 2019-04-10 | 2019-04-10 | Angular displacement magnetic sensor with multiple signal outputs |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112038027A (en) * | 2020-09-02 | 2020-12-04 | 中国电子科技集团公司第四十九研究所 | High-precision corner sensor and preparation method of resistance sensitive element thereof |
| CN115435675A (en) * | 2022-11-07 | 2022-12-06 | 成都宏明电子股份有限公司 | High-efficiency sealed angular displacement sensor capable of preventing liquid from immersing for long time |
-
2019
- 2019-04-10 CN CN201920478594.5U patent/CN209877879U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112038027A (en) * | 2020-09-02 | 2020-12-04 | 中国电子科技集团公司第四十九研究所 | High-precision corner sensor and preparation method of resistance sensitive element thereof |
| CN112038027B (en) * | 2020-09-02 | 2022-04-05 | 中国电子科技集团公司第四十九研究所 | High-precision corner sensor and preparation method of resistance sensitive element thereof |
| CN115435675A (en) * | 2022-11-07 | 2022-12-06 | 成都宏明电子股份有限公司 | High-efficiency sealed angular displacement sensor capable of preventing liquid from immersing for long time |
| CN115435675B (en) * | 2022-11-07 | 2023-02-14 | 成都宏明电子股份有限公司 | High-efficiency sealed angular displacement sensor capable of preventing liquid from immersing for long time |
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