CN108895955B - Compact Hall displacement sensor special for DVVA and assembling method thereof - Google Patents
Compact Hall displacement sensor special for DVVA and assembling method thereof Download PDFInfo
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- CN108895955B CN108895955B CN201810495705.3A CN201810495705A CN108895955B CN 108895955 B CN108895955 B CN 108895955B CN 201810495705 A CN201810495705 A CN 201810495705A CN 108895955 B CN108895955 B CN 108895955B
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- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
- G01B7/02—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring length, width or thickness
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Abstract
The invention relates to a special compact Hall displacement sensor for DVVA and an assembly method thereof, wherein the sensor comprises a shell (1), a circuit board packaging box (2) and a sensing core (3); the two sides of the shell (1) are provided with assembling holes (1.4), an upper cavity and a lower cavity are arranged in the shell (1), the cavity on the upper portion is a packaging box mounting cavity (1.2) for fixedly mounting a circuit board packaging box (2), a screw through hole (1.2.1) and a wire outlet hole (1.2.2) are arranged on the cavity wall of the packaging box mounting cavity (1.2), the cavity on the lower portion is a sensing core mounting cavity (1.1) for mounting a sensing core (3), and a spring (4) is arranged between the sensing core (3) and the sensing core mounting cavity (1.1). The invention relates to a compact Hall displacement sensor special for DVVA and an assembly method thereof, which have the advantages of simple structure, small volume and stable measurement performance.
Description
Technical Field
The invention relates to a sensor and an assembly method thereof, in particular to a special compact Hall displacement sensor applied to a digital video visual inspection (DVVA) automatic control system of an automobile engine throttle valve and an assembly method thereof, belonging to the technical field of sensors.
Background
At present, a displacement sensor used on a DVVA is large in size and therefore is not beneficial to miniaturization application, the DVVA is used as shown in the figures (13-15), a mounting space given to the sensor is small (only a mounting space of 14.9mm x 40 mm), a conventional contact type (carbon film type) sensor cannot be directly applied, and the carbon film type sensor is easy to wear, short in service life, easy to be influenced by vibration and not stable enough in performance, so that the accuracy of the obtained displacement parameters is not enough, and the fuel system of an automobile engine cannot be accurately controlled. Therefore, a displacement sensor with simple structure, small size and stable measurement performance is needed.
Disclosure of Invention
The invention aims to overcome the defects and provide the special compact Hall displacement sensor for DVVA, which has the advantages of simple structure, small volume and stable measurement performance, and the assembly method thereof.
The purpose of the invention is realized as follows:
a compact Hall displacement sensor special for DVVA comprises a shell, a circuit board packaging box and a sensing core;
assembling holes are formed in two sides of the shell, an upper cavity and a lower cavity are formed in the shell, the cavity located at the upper part is a packaging box mounting cavity for fixedly mounting a circuit board packaging box, a screw through hole and a wire outlet hole are formed in the wall of the packaging box mounting cavity, the cavity located at the lower part is a sensing core mounting cavity for mounting a sensing core, and a spring is arranged between the sensing core and the sensing core mounting cavity; a spring positioning column for inserting a spring is arranged in the sensing core mounting cavity; the bottom of the sensing core mounting cavity is provided with a clamping hook along the sliding direction of the sensing core;
the circuit board packaging box comprises a box body, the box body is of a T-shaped structure, a circuit board of the T-shaped structure is installed in the box body, a Hall sensing chip is installed at the bottom of the T-shaped structure of the circuit board, box body self-tapping screw fixing bottom holes are formed in two sides of the box body, screws penetrate through screw through holes and are screwed into the box body self-tapping screw fixing bottom holes, circuit board positioning columns and limiting bosses are arranged in box cavities of the box body, positioning holes for the circuit board positioning columns to be inserted into are formed in the circuit board, and the box cavities of the box body are opposite to the wire outlet;
the sensing core package comprises a magnetic steel mounting body and a guide body connected to the magnetic steel mounting body, the magnetic steel mounting body is slidably inserted into the sensing core mounting cavity, a sliding groove is formed in the top surface of the magnetic steel mounting body along the sliding direction of the magnetic steel mounting body, magnetic steel is embedded in the groove walls of the left side and the right side of the sliding groove, the box body of the T-shaped structure is located in the sliding groove, and a Hall sensing chip on a circuit board in the box body is located between the two pieces of magnetic steel; the bottom surface of the magnetic steel installation body is provided with a clamping hook clamping groove and a guide groove along the sliding direction of the magnetic steel installation body, the clamping hook clamping groove and the guide groove are positioned in the same direction, the groove depth of the clamping hook clamping groove is greater than that of the guide groove, a guide chamfer is arranged at the end part of the guide groove, so that the clamping hook can conveniently slide in, and the clamping hook is embedded in the clamping hook clamping groove; the bottom surface of the magnetic steel mounting body is provided with a contact strip along the sliding direction, so that the contact surface between the magnetic steel mounting body and the shell is reduced, the maximum deformation area of the shell is avoided, and the friction force is reduced; spring mounting counter bores for inserting springs are formed in the back faces of the two sides of the magnetic steel mounting body, and lightening holes I are formed in the front faces of the two sides of the magnetic steel mounting body; the end part of the guide body is provided with a contact head, and the middle part of the guide body is provided with a lightening hole II along the length direction.
An assembling method of a compact Hall displacement sensor special for DVVA, which comprises the following steps: respectively preparing a shell, a circuit board packaging box and a sensing core, embedding and installing a circuit board in the circuit board packaging box, then pouring sealant into the circuit board packaging box to form sealing, embedding the circuit board packaging box after the sealant is poured and sealed into a packaging box installation cavity, tapping screws penetrate through screw through holes and then tap into self-tapping screw fixing bottom holes of a box body to realize fixing, and leading out wires of the circuit board through wire outlet holes; the magnetic steel is embedded in the mounting cavities at two sides of the sliding groove of the magnetic steel mounting body and is glued and fixed, the spring is inserted into the counter bore, then the magnetic steel mounting body is inserted into the sensing core mounting cavity in a sliding mode, the spring is sleeved on the spring positioning column, and meanwhile the clamping hook is embedded into the clamping hook clamping groove after being guided by the guide groove, so that the whole assembly process is completed.
Compared with the prior art, the invention has the beneficial effects that:
the invention carries out displacement detection in a non-contact Hall sensor mode, thereby improving the stability and reducing the volume; simultaneously, make the circuit board can not contact with oil through reasonable structural design to the stability of performance has been guaranteed.
Drawings
Fig. 1 is a side sectional view of a compact hall displacement sensor for DVVA according to the present invention.
Fig. 2 is a front view of the compact hall displacement sensor for DVVA according to the present invention.
Fig. 3 is a bottom view of the compact hall displacement sensor for DVVA according to the present invention.
Fig. 4 is a front view of a housing of a compact hall displacement sensor for DVVA applications of the present invention.
Fig. 5 is a sectional view a-a of fig. 4 of a housing of a compact hall displacement sensor for DVVA according to the present invention.
Fig. 6 is a bottom view of a housing of the compact hall displacement sensor for DVVA according to the present invention.
Fig. 7 is a front view of a circuit board packaging box of the DVVA dedicated compact hall displacement sensor of the present invention.
Fig. 8 is a rear view of a circuit board packaging box of the DVVA dedicated compact hall displacement sensor of the present invention.
Fig. 9 is a side sectional view of a circuit board packaging box of the DVVA dedicated compact hall displacement sensor of the present invention.
Fig. 10 is a rear view of a sensor core of the compact hall displacement sensor for DVVA according to the present invention.
Fig. 11 is a bottom view of a sensor core of the compact hall displacement sensor for DVVA according to the present invention.
Fig. 12 is a side cross-sectional view of a sensor core of the compact hall displacement sensor for DVVA according to the present invention.
Fig. 13 is a top view of DVVA according to an embodiment of the present invention.
Fig. 14 is a front view of an application DVVA of the present invention.
Fig. 15 is a left side view of the DVVA application object according to the present invention.
Wherein:
the sensor comprises a shell 1, a circuit board packaging box 2, a sensing core 3, a spring 4, magnetic steel 5 and a circuit board 6;
the sensor core mounting cavity comprises a sensor core mounting cavity 1.1, a packaging box mounting cavity 1.2, a clamping hook 1.3 and an assembling hole 1.4;
a spring positioning column 1.1.1;
the screw passes through a hole 1.2.1 and an outlet hole 1.2.2;
the box body 2.1, the box body self-tapping screw fixing bottom hole 2.2, the circuit board positioning column 2.3 and the limiting boss 2.4;
a magnetic steel mounting body 3.1 and a guide body 3.2;
the spring mounting structure comprises a sliding groove 3.1.1, a hook clamping groove 3.1.2, a guide groove 3.1.3, a contact strip 3.1.4, a spring mounting counter bore 3.1.5, a lightening hole I3.1.6 and a guide chamfer 3.1.7;
contact 3.2.1, lightening hole two 3.2.2.
Detailed Description
Referring to fig. 1 to 15, the compact hall displacement sensor special for DVVA according to the present invention comprises a housing 1, a circuit board packaging box 2 and a sensor core 3;
assembling holes 1.4 are formed in two sides of the shell 1, an upper cavity and a lower cavity are formed in the shell 1, the cavity located at the upper part is a packaging box mounting cavity 1.2 for fixedly mounting a circuit board packaging box 2, a screw through hole 1.2.1 and a wire outlet hole 1.2.2 are formed in the cavity wall of the packaging box mounting cavity 1.2, the cavity located at the lower part is a sensing core mounting cavity 1.1 for mounting a sensing core 3, and a spring 4 is arranged between the sensing core 3 and the sensing core mounting cavity 1.1; a spring positioning column 1.1.1 for inserting a spring 4 is arranged in the sensing core mounting cavity 1.1; the bottom of the sensing core mounting cavity 1.1 is provided with a clamping hook 1.3 along the sliding direction of the sensing core 3;
the circuit board packaging box 2 comprises a box body 2.1, the box body 2.1 is of a T-shaped structure, a circuit board 6 of the T-shaped structure is installed in the box body 2.1, a Hall sensing chip is installed at the bottom of the T-shaped structure of the circuit board 6, box body self-tapping screw fixing bottom holes 2.2 are formed in two sides of the box body 2.1, screws penetrate through screw through holes 1.2.1 and then are screwed into the box body self-tapping screw fixing bottom holes 2.2, a circuit board positioning column 2.3 and a limiting boss 2.4 are arranged in a box cavity of the box body 2.1, a positioning hole for inserting the circuit board positioning column 2.3 is formed in the circuit board 6, and the box cavity of the box body 2.1 is over against the wire outlet hole 1.2.;
the sensing core 3 comprises a magnetic steel mounting body 3.1 and a guide body 3.2 (an eccentric structure is arranged between the magnetic steel mounting body 3.1 and the guide body 3.2) connected to the magnetic steel mounting body 3.1, the magnetic steel mounting body 3.1 is inserted into a sensing core mounting cavity 1.1 in a sliding manner, a sliding groove 3.1.1 is formed in the top surface of the magnetic steel mounting body 3.1 along the sliding direction, magnetic steels 5 are embedded in the groove walls of the left side and the right side of the sliding groove 3.1.1, the box body 2.1 of the T-shaped structure is positioned in the sliding groove 3.1.1, and a Hall sensing chip on a circuit board 6 in the box body 2.1 is positioned in the middle of the two magnetic steels 5; the bottom surface of the magnetic steel installation body 3.1 is provided with a clamping hook clamping groove 3.1.2 and a guide groove 3.1.3 along the sliding direction, the clamping hook clamping groove 3.1.2 and the guide groove 3.1.3 are positioned in the same direction, the groove depth of the clamping hook clamping groove 3.1.2 is larger than that of the guide groove 3.1.3, the end part of the guide groove 3.1.3 is provided with a guide chamfer 3.1.7, so that the clamping hook 1.3 can be conveniently slid in, and the clamping hook 1.3 is embedded in the clamping hook clamping groove 3.1.2; the bottom surface of the magnetic steel mounting body 3.1 is provided with a contact strip 3.1.4 along the sliding direction, so that the contact surface between the magnetic steel mounting body and the shell 1 is reduced, a deformation area is avoided, namely, the maximum deformation area of the shell is avoided, and the friction force is reduced; spring mounting counter bores 3.1.5 for inserting springs 4 are formed in the back faces of the two sides of the magnetic steel mounting body 3.1, and lightening holes I3.1.6 are formed in the front faces of the two sides of the magnetic steel mounting body 3.1; a contact 3.2.1 is arranged at the end part of the guide body 3.2, and a lightening hole II 3.2.2 is arranged in the middle of the guide body 3.2 along the length direction;
an assembling method of a compact Hall displacement sensor special for DVVA, which comprises the following steps: respectively preparing a shell 1, a circuit board packaging box 2 and a sensing core 3, embedding and installing a circuit board 6 in the circuit board packaging box 2 (a circuit board positioning column 2.3 provides a positioning and limiting boss 2.4 to enable the circuit board 6 to be suspended to form an installation space of a Hall sensor), then pouring sealant into the circuit board packaging box 2 to form sealing, embedding the circuit board packaging box 2 after pouring sealant and sealing into a packaging box installation cavity 1.2, tapping screws penetrate through screw through holes 1.2.1 and then tap into box body tapping screw fixing bottom holes 2.2 to realize fixing, and leading out wires of the circuit board 6 through wire outlet holes 1.2.2; the magnetic steel 5 is embedded in the mounting cavities at two sides of the chute 3.1.1 of the magnetic steel mounting body 3.1 and is glued fixedly (thereby ensuring that the mounting is fixed and reliable and improving the measurement precision), the spring 4 is inserted into the counter bore 3.1.5, then the magnetic steel mounting body 3.1 is inserted into the sensing core mounting cavity 1.1 in a sliding manner, the spring 4 is sleeved on the spring positioning column 1.1.1, and meanwhile, the clamping hook 1.3 is embedded in the clamping hook clamping groove 3.1.2 after being guided by the guide groove 3.1.3, thereby completing the whole assembly process.
In addition: it should be noted that the above-mentioned embodiment is only a preferred embodiment of the present patent, and any modification or improvement made by those skilled in the art based on the above-mentioned conception is within the protection scope of the present patent.
Claims (2)
1. The utility model provides a special compact hall displacement sensor of DVVA which characterized in that: the sensor comprises a shell (1), a circuit board packaging box (2) and a sensing core (3);
assembling holes (1.4) are formed in two sides of the shell (1), an upper cavity and a lower cavity are arranged in the shell (1), the cavity positioned at the upper part is a packaging box mounting cavity (1.2) for fixedly mounting a circuit board packaging box (2), a screw through hole (1.2.1) and a wire outlet hole (1.2.2) are formed in the cavity wall of the packaging box mounting cavity (1.2), the cavity positioned at the lower part is a sensing core mounting cavity (1.1) for mounting a sensing core (3), and a spring (4) is arranged between the sensing core (3) and the sensing core mounting cavity (1.1); a spring positioning column (1.1.1) for inserting a spring (4) is arranged in the sensing core mounting cavity (1.1); the bottom of the sensing core mounting cavity (1.1) is provided with a clamping hook (1.3) along the sliding direction of the sensing core (3);
the circuit board packaging box (2) comprises a box body (2.1), the box body (2.1) is of a T-shaped structure, a circuit board (6) of the T-shaped structure is installed in the box body (2.1), a Hall sensing chip is installed at the bottom of the T-shaped structure of the circuit board (6), box body self-tapping screw fixing bottom holes (2.2) are formed in two sides of the box body (2.1), screws penetrate through the screw through holes (1.2.1) and then are screwed into the box body self-tapping screw fixing bottom holes (2.2), a circuit board positioning column (2.3) and a limiting boss (2.4) are arranged in a box cavity of the box body (2.1), a positioning hole for the circuit board positioning column (2.3) to be inserted into is formed in the circuit board (6), and the box cavity of the box body (2.1) is over against the wire outlet hole (1.2;
the sensing core (3) comprises a magnetic steel mounting body (3.1) and a guide body (3.2) connected to the magnetic steel mounting body (3.1), the magnetic steel mounting body (3.1) is inserted into the sensing core mounting cavity (1.1) in a sliding manner, a sliding groove (3.1.1) is formed in the top surface of the magnetic steel mounting body (3.1) along the sliding direction, magnetic steels (5) are embedded in the groove walls of the left side and the right side of the sliding groove (3.1.1), the box body (2.1) of the T-shaped structure is positioned in the sliding groove (3.1.1), and a Hall sensing chip on a circuit board (6) in the box body (2.1) is positioned in the middle of the two magnetic steels (5); the bottom surface of the magnetic steel mounting body (3.1) is provided with a clamping hook clamping groove (3.1.2) and a guide groove (3.1.3) along the sliding direction, the clamping hook clamping groove (3.1.2) and the guide groove (3.1.3) are positioned in the same direction, the groove depth of the clamping hook clamping groove (3.1.2) is greater than that of the guide groove (3.1.3), the end part of the guide groove (3.1.3) is provided with a guide chamfer (3.1.7), so that the clamping hook (1.3) can conveniently slide in, and the clamping hook (1.3) is embedded in the clamping hook clamping groove (3.1.2); the bottom surface of the magnetic steel mounting body (3.1) is provided with a contact strip (3.1.4) along the sliding direction, the back surfaces of the two sides of the magnetic steel mounting body (3.1) are provided with spring mounting counter bores (3.1.5) for inserting springs (4), and the front surfaces of the two sides of the magnetic steel mounting body (3.1) are provided with lightening holes I (3.1.6); the end part of the guide body (3.2) is provided with a contact head (3.2.1), and the middle part of the guide body (3.2) is provided with a second lightening hole (3.2.2) along the length direction.
2. A DVVA dedicated compact Hall displacement sensor assembling method is characterized in that:
the sensor comprises a shell (1), a circuit board packaging box (2) and a sensing core (3);
assembling holes (1.4) are formed in two sides of the shell (1), an upper cavity and a lower cavity are arranged in the shell (1), the cavity positioned at the upper part is a packaging box mounting cavity (1.2) for fixedly mounting a circuit board packaging box (2), a screw through hole (1.2.1) and a wire outlet hole (1.2.2) are formed in the cavity wall of the packaging box mounting cavity (1.2), the cavity positioned at the lower part is a sensing core mounting cavity (1.1) for mounting a sensing core (3), and a spring (4) is arranged between the sensing core (3) and the sensing core mounting cavity (1.1); a spring positioning column (1.1.1) for inserting a spring (4) is arranged in the sensing core mounting cavity (1.1); the bottom of the sensing core mounting cavity (1.1) is provided with a clamping hook (1.3) along the sliding direction of the sensing core (3);
the circuit board packaging box (2) comprises a box body (2.1), the box body (2.1) is of a T-shaped structure, a circuit board (6) of the T-shaped structure is installed in the box body (2.1), a Hall sensing chip is installed at the bottom of the T-shaped structure of the circuit board (6), box body self-tapping screw fixing bottom holes (2.2) are formed in two sides of the box body (2.1), screws penetrate through the screw through holes (1.2.1) and then are screwed into the box body self-tapping screw fixing bottom holes (2.2), a circuit board positioning column (2.3) and a limiting boss (2.4) are arranged in a box cavity of the box body (2.1), a positioning hole for the circuit board positioning column (2.3) to be inserted into is formed in the circuit board (6), and the box cavity of the box body (2.1) is over against the wire outlet hole (1.2;
the sensing core (3) comprises a magnetic steel mounting body (3.1) and a guide body (3.2) connected to the magnetic steel mounting body (3.1), the magnetic steel mounting body (3.1) is inserted into the sensing core mounting cavity (1.1) in a sliding manner, a sliding groove (3.1.1) is formed in the top surface of the magnetic steel mounting body (3.1) along the sliding direction, magnetic steels (5) are embedded in the groove walls of the left side and the right side of the sliding groove (3.1.1), the box body (2.1) of the T-shaped structure is positioned in the sliding groove (3.1.1), and a Hall sensing chip on a circuit board (6) in the box body (2.1) is positioned in the middle of the two magnetic steels (5); the bottom surface of the magnetic steel mounting body (3.1) is provided with a clamping hook clamping groove (3.1.2) and a guide groove (3.1.3) along the sliding direction, the clamping hook clamping groove (3.1.2) and the guide groove (3.1.3) are positioned in the same direction, the groove depth of the clamping hook clamping groove (3.1.2) is greater than that of the guide groove (3.1.3), the end part of the guide groove (3.1.3) is provided with a guide chamfer (3.1.7), so that the clamping hook (1.3) can conveniently slide in, and the clamping hook (1.3) is embedded in the clamping hook clamping groove (3.1.2); the bottom surface of the magnetic steel mounting body (3.1) is provided with a contact strip (3.1.4) along the sliding direction, the back surfaces of the two sides of the magnetic steel mounting body (3.1) are provided with spring mounting counter bores (3.1.5) for inserting springs (4), and the front surfaces of the two sides of the magnetic steel mounting body (3.1) are provided with lightening holes I (3.1.6); a contact head (3.2.1) is arranged at the end part of the guide body (3.2), and a second lightening hole (3.2.2) is arranged in the middle of the guide body (3.2) along the length direction;
the assembly method of the sensor comprises the following steps: respectively preparing a shell (1), a circuit board packaging box (2) and a sensing core (3), embedding a circuit board (6) into the circuit board packaging box (2), then pouring sealant into the circuit board packaging box (2) to form sealing, embedding the circuit board packaging box (2) after glue pouring sealing into a packaging box mounting cavity (1.2), tapping screws penetrate through screw through holes (1.2.1) and then attack into self-tapping screw fixing bottom holes (2.2) of a box body to realize fixing, and leading out leads of the circuit board (6) through wire outlet holes (1.2.2); embedding magnet steel (5) in the two side installation cavities of the sliding groove (3.1.1) of the magnet steel installation body (3.1) and gluing for fixation, inserting the spring (4) in the counter bore (3.1.5), then sliding and inserting the magnet steel installation body (3.1) into the sensor core installation cavity (1.1), and sleeving the spring (4) on the spring positioning column (1.1.1), and embedding the clamping hook (1.3) in the clamping hook clamping groove (3.1.2) after being guided by the guide groove (3.1.3), thereby completing the whole assembly process.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810495705.3A CN108895955B (en) | 2018-05-22 | 2018-05-22 | Compact Hall displacement sensor special for DVVA and assembling method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810495705.3A CN108895955B (en) | 2018-05-22 | 2018-05-22 | Compact Hall displacement sensor special for DVVA and assembling method thereof |
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| Publication Number | Publication Date |
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| CN108895955A CN108895955A (en) | 2018-11-27 |
| CN108895955B true CN108895955B (en) | 2020-01-24 |
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| CN1343871A (en) * | 2001-10-12 | 2002-04-10 | 厦门大学 | Hall follow-up shift sensor |
| JP3822731B2 (en) * | 1997-10-03 | 2006-09-20 | 株式会社緑測器 | Non-contact linear displacement sensor |
| CN201037764Y (en) * | 2007-04-12 | 2008-03-19 | 中国矿业大学 | Displacement sensor for measuring gap of brake block |
| CN102538835A (en) * | 2010-12-20 | 2012-07-04 | 长春荣德光学有限公司 | Non-contact annular magnetoelectric rotary encoder |
| CN103217093A (en) * | 2013-04-23 | 2013-07-24 | 扬州大学 | Hall type straight small displacement sensor |
| CN203595492U (en) * | 2013-12-20 | 2014-05-14 | 宁波市北仑机械电器有限公司 | Non-contact absolute value type linear displacement sensor |
| CN107421432A (en) * | 2017-06-16 | 2017-12-01 | 上海同驭汽车科技有限公司 | A kind of Novel Non-Contact Type Hall Displacement Sensor |
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2018
- 2018-05-22 CN CN201810495705.3A patent/CN108895955B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3822731B2 (en) * | 1997-10-03 | 2006-09-20 | 株式会社緑測器 | Non-contact linear displacement sensor |
| CN1343871A (en) * | 2001-10-12 | 2002-04-10 | 厦门大学 | Hall follow-up shift sensor |
| CN201037764Y (en) * | 2007-04-12 | 2008-03-19 | 中国矿业大学 | Displacement sensor for measuring gap of brake block |
| CN102538835A (en) * | 2010-12-20 | 2012-07-04 | 长春荣德光学有限公司 | Non-contact annular magnetoelectric rotary encoder |
| CN103217093A (en) * | 2013-04-23 | 2013-07-24 | 扬州大学 | Hall type straight small displacement sensor |
| CN203595492U (en) * | 2013-12-20 | 2014-05-14 | 宁波市北仑机械电器有限公司 | Non-contact absolute value type linear displacement sensor |
| CN107421432A (en) * | 2017-06-16 | 2017-12-01 | 上海同驭汽车科技有限公司 | A kind of Novel Non-Contact Type Hall Displacement Sensor |
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Denomination of invention: Dvva special compact Hall displacement sensor and its assembly method Effective date of registration: 20210608 Granted publication date: 20200124 Pledgee: Qiaoqi sub branch of Jiangsu Jiangyin Rural Commercial Bank Co.,Ltd. Pledgor: JIANGYIN LINGE TECHNOLOGY Co.,Ltd. Registration number: Y2021320010202 |
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