CN217358397U

CN217358397U - Composite displacement sensor with linear displacement and angular displacement detection function

Info

Publication number: CN217358397U
Application number: CN202220164055.6U
Authority: CN
Inventors: 黄华钢; 文亮; 刘健; 雷辉煜
Original assignee: Chengdu Hongming Electronics Co Ltd
Current assignee: Chengdu Hongming Electronics Co Ltd
Priority date: 2022-01-21
Filing date: 2022-01-21
Publication date: 2022-09-02
Anticipated expiration: 2032-01-21

Abstract

The utility model discloses a compound displacement sensor with linear displacement and angle displacement detect function, which comprises an outer shell, the drive shaft, the brush seat, the guide bar, the brush, the resistive element, the lead wire, the magnet steel, bearing and circuit board, be equipped with the resistance area on the resistive element, the inner of drive shaft is connected with the brush seat after passing the corresponding through-hole on the shell by outer and interior, the brush is installed on the brush seat, the brush includes the first brush that contacts with the resistance area, be equipped with the magnet steel installation department on the brush seat, the magnet steel installation department is equipped with the inner chamber, the inner of drive shaft is connected with the magnet steel after passing the corresponding through-hole on the magnet steel installation department by outer and interior, the circuit board is installed in the inner chamber of magnet steel installation department, install the magnetic induction chip that corresponds with the magnet steel on the circuit board. The utility model discloses only need a drive shaft to be connected with the moving member of waiting to examine equipment, can accomplish the linear displacement of this moving member as required and detect and the angle displacement detection function, both reduced product cost, be convenient for install and use again.

Description

Composite displacement sensor with linear displacement and angular displacement detection functions

Technical Field

The present invention relates to a displacement sensor (or potentiometer), and more particularly to a composite displacement sensor with linear displacement and angular displacement detection functions.

Background

The linear displacement sensor (or potentiometer) is a sensor (or potentiometer) for converting linear mechanical displacement into an electric signal, the angular displacement sensor (or potentiometer) is a sensor (or potentiometer) for converting rotary mechanical displacement into an electric signal, and the two sensors are widely applied to the fields of ships, aviation, spaceflight, weapons, ships and the like.

Traditional linear displacement sensor can only detect the linear displacement volume, and traditional angular displacement sensor can only detect the rotation displacement volume. In practical applications, the linear displacement and the angular displacement may need to be detected, and in such a case, only one conventional linear displacement sensor and only one conventional angular displacement sensor are used to respectively detect the linear displacement and the angular displacement.

In the above-mentioned mode that adopts traditional linear displacement sensor and traditional angle displacement sensor to detect linear displacement volume and rotary displacement volume respectively, need accomplish a kind of detection after earlier dismantle with corresponding sensor be connected, then another sensor is connected again, accomplish another kind of detection again, increased product cost, two sensors also are not convenient for install in addition, even can install also need dismantle with the connection, waste time and energy, inefficiency.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a can reduce product cost and be convenient for install compound displacement sensor who has linear displacement and angle displacement detection function who uses for solving above-mentioned problem.

The utility model discloses a following technical scheme realizes above-mentioned purpose:

the utility model provides a compound displacement sensor with linear displacement and angle displacement detect function, includes shell, drive shaft, brush holder, guide bar, brush, resistive element and lead wire, be equipped with the resistance area on the resistive element, the inner of drive shaft is passed by outer and interior the corresponding through-hole on the shell after with the brush holder is connected, guide bar fixed mounting is in the shell, the brush holder is in through self through-hole suit on the guide bar and can the axial slip of guide bar, the brush is installed on the brush holder, the brush includes first brush, first brush with the resistance area contact, compound displacement sensor with linear displacement and angle displacement detect function still includes magnet steel, bearing and circuit board, be equipped with the magnet steel installation department on the brush holder, the magnet steel installation department is equipped with the inner chamber, the inner of drive shaft is passed by outer and interior the corresponding through-hole on the magnet steel installation department after with the magnet steel is connected The drive shaft with pass through between the pore wall of the corresponding through-hole on the magnet steel installation department the bearing is connected, the circuit board install in the inner chamber of magnet steel installation department, install on the circuit board with the magnetic induction chip that the magnet steel corresponds.

Preferably, in order to facilitate connection of a lead to a corresponding output signal, minimize wire connection, and directly use detection data without affecting movement of the brush or decoding during application, the lead includes a positive power line, a negative power line, a CANH signal line, a CANL signal line, a second brush, a third brush, a fourth brush, and a fifth brush, the resistor further includes a first conductive strip, a second conductive strip, a third conductive strip, and a fourth conductive strip, the circuit board further includes a signal processing circuit for processing a changing electrical signal into data in a CAN bus standard frame format, the positive power line is connected to one end of the first conductive strip, the negative power line is connected to one end of the second conductive strip, one end of the first conductive strip is connected to one end of the resistance strip, and the other end of the second conductive strip is connected to the other end of the resistance strip, the second brush, the third brush, the fourth brush and the fifth brush respectively with first conductive band, the second conductive band, the third conductive band and the fourth conductive band one-to-one contact, the second brush with the third brush respectively with the positive power input end and the negative power input end of circuit board correspond and are connected, first brush with the signal output part of magnetic induction chip respectively with signal processing circuit's signal input part corresponds and is connected, signal processing circuit's CANH signal output part and CANL signal output part respectively with the fourth brush with the fifth brush corresponds and is connected, the one end of third brush with the one end of fourth conductive band respectively with CANH signal line with CANL signal line corresponds and is connected.

Preferably, in order to facilitate installation of the resistor body and make the resistor body be used in cooperation with a brush holder, the driving shaft is arranged in the housing after passing through a through hole in the top of the housing from top to bottom, four corners of the bottom of the housing are provided with housing platforms, four corners of the resistor body are respectively connected with the four housing platforms through screws, and the brush holder is located above the resistor body.

Preferably, the two guide rods are parallel to each other to guide the brush holder more stably and reliably.

The beneficial effects of the utility model reside in that:

the utility model discloses a forming a compound displacement sensor with linear displacement detection part and angular displacement detection part are integrated together, only needing a drive shaft to be connected with the moving member of waiting to examine equipment, can accomplish the linear displacement detection and the angular displacement detection function of this moving member as required, both reduced product cost, the installation of being convenient for again is used, and not equidirectional displacement detection also does not need the dismouting part, and labour saving and time saving is fit for promoting.

Drawings

Fig. 1 is a schematic top view of the composite displacement sensor with linear displacement and angular displacement detection functions of the present invention with the top cover removed;

FIG. 2 is a sectional view A-A of FIG. 1;

fig. 3 is a schematic view of the overlooking structure of the resistor body of the composite displacement sensor with linear displacement and angular displacement detection functions according to the present invention.

Detailed Description

The present invention will be further explained with reference to the accompanying drawings:

as shown in fig. 1, fig. 2 and fig. 3, the composite displacement sensor with linear displacement and angular displacement detection functions of the present invention comprises a housing 2, a driving shaft 14, a brush holder 10, a guiding rod 4, an electric brush, a resistor 3, a lead 1, a magnetic steel 19, a bearing 18 and a circuit board 20, wherein the resistor 3 is provided with a resistor strip 5, the inner end of the driving shaft 14 passes through a corresponding through hole on the housing 2 from outside to inside and then is connected with the brush holder 10, the guiding rod 4 is fixedly installed in the housing 2, the brush holder 10 is sleeved on the guiding rod 4 through a through hole thereof and can slide in the axial direction of the guiding rod 4, the electric brush is installed on the brush holder 10, the electric brush comprises a first electric brush 11, the first electric brush 11 contacts with the resistor strip 5, the brush holder 10 is provided with a magnetic steel installation part 13, the magnetic steel installation part 13 is provided with an inner cavity, the inner end of the driving shaft 14 passes through a corresponding through hole on the magnetic steel installation part 13 from outside to inside and then is connected with the magnetic steel 19, the driving shaft 14 is connected with the hole wall of the corresponding through hole on the magnetic steel mounting part 13 through a bearing 18, the circuit board 20 is mounted in the inner cavity of the magnetic steel mounting part 13, a magnetic induction chip (not shown, conventional chip) corresponding to the magnetic steel 19 is mounted on the circuit board 20, and the magnetic induction chip can select a TLE5012 magnetic induction chip. Preferably, the lead 1 includes a positive power line (not labeled in the figure), a negative power line (not labeled in the figure), a CANH signal line (not labeled in the figure), and a CANL signal line (not labeled in the figure), the brushes further include a second brush 12, a third brush 15, a fourth brush 16, and a fifth brush 17, the resistor 3 is further provided with a first conductive strip 6, a second conductive strip 7, a third conductive strip 8, and a fourth conductive strip 9, the circuit board 20 is further provided with a signal processing circuit (not shown, a conventional circuit) for processing the changing electrical signal into CAN bus standard frame format data, the signal processing circuit CAN select a single chip microcomputer with model number C8051F506, the positive power line is connected with one end of the first conductive strip 6, the negative power line is connected with one end of the second conductive strip 7, one end of the first conductive strip 6 is connected with one end of the resistive strip 5, the other end of the second conductive strip 7 is connected with the other end of the resistive strip 5, the second brush 12, the third brush 15, the fourth brush 16 and the fifth brush 17 are respectively in one-to-one corresponding contact with the first conductive band 6, the second conductive band 7, the third conductive band 8 and the fourth conductive band 9, the second brush 12 and the third brush 15 are respectively in corresponding connection with a positive power supply input end and a negative power supply input end of a circuit board 20, the first brush 11 and a signal output end of the magnetic induction chip are respectively in corresponding connection with a signal input end of the signal processing circuit, a CANH signal output end and a CANL signal output end of the signal processing circuit are respectively in corresponding connection with the fourth brush 16 and the fifth brush 17, and one end of the third brush 8 and one end of the fourth conductive band 9 are respectively in corresponding connection with a CANH signal line and the CANL signal line; a driving shaft 14 penetrates through a through hole in the top of the shell 2 from top to bottom and then is arranged in the shell 2, shell platforms (not marked in the figure) are arranged at four corners of the bottom in the shell 2, the four corners of the resistor 3 are respectively connected with the four shell platforms through screws (not marked in the figure), and the brush holder 10 is positioned above the resistor 3; 4 the guide rods are two parallel to each other.

As shown in fig. 1-3, when in use, the driving shaft 14 is connected to a moving member (not shown) of the device to be tested (not shown), when the moving member moves in a linear direction, the moving member drives the brush holder 10 to move synchronously in the linear direction through the driving shaft 14, so as to drive the first brush 11, the second brush 12, the third brush 15, the fourth brush 16 and the fifth brush 17 to slide on the one-to-one corresponding resistor strip 5, the first conductive strip 6, the second conductive strip 7, the third conductive strip 8 and the fourth conductive strip 9, respectively, the changed electrical signal is transmitted to the signal processing circuit through the first brush 11, and is processed by the signal processing circuit to form a CANH signal (i.e., a high-level CAN bus standard signal) and a CANL signal (i.e., a low-level CAN bus standard signal), which are respectively connected to the moving member (not shown) through the corresponding fourth brush 16, the third conductive strip 8 and the fifth brush 17, The fourth conductive band 9 is transmitted to the CANH signal line and the CANL signal line, so that the aim of detecting the linear displacement of the moving part moving in the linear direction is fulfilled; when the moving member carries out rotary motion, the moving member passes through drive shaft 14 and drives magnet steel 19 synchronous revolution, and magnetic induction chip on the circuit board detects the magnetic field change and converts the signal transmission into the signal transmission of change for signal processing circuit, passes through signal processing circuit handles back formation CANH signal (being high level CAN bus standard signal) and CANL signal (being low level CAN bus standard signal), transmits respectively through corresponding fourth brush 16, third conductive band 8 and fifth brush 17, fourth conductive band 9 CANH signal line with the CANL signal line realizes the angular displacement volume detection purpose of moving member when rotary motion.

The above-mentioned embodiment is only the preferred embodiment of the present invention, and is not to the limitation of the technical solution of the present invention, as long as the technical solution can be realized on the basis of the above-mentioned embodiment without creative work, all should be regarded as falling into the protection scope of the right of the present invention.

Claims

1. A composite displacement sensor with linear displacement and angular displacement detection functions comprises a shell, a driving shaft, a brush seat, a guide rod, an electric brush, a resistor body and a lead, wherein a resistor belt is arranged on the resistor body, the inner end of the driving shaft penetrates through a corresponding through hole in the shell from outside to inside and then is connected with the brush seat, the guide rod is fixedly installed in the shell, the brush seat is sleeved on the guide rod through the through hole per se and can slide in the axial direction of the guide rod, the electric brush is installed on the brush seat and comprises a first electric brush, and the first electric brush is in contact with the resistor belt, and the composite displacement sensor is characterized in that: compound displacement sensor with linear displacement and angle displacement detect function still includes magnet steel, bearing and circuit board, be equipped with the magnet steel installation department on the brush holder, the magnet steel installation department is equipped with the inner chamber, the inner of drive shaft is passed by outer and interior the last corresponding through-hole of magnet steel installation department after with magnet steel is connected, the drive shaft with pass through between the pore wall of the last corresponding through-hole of magnet steel installation department the bearing is connected, the circuit board install in the inner chamber of magnet steel installation department, install on the circuit board with the magnetic induction chip that the magnet steel corresponds.

2. A compound type displacement sensor having a linear displacement and angular displacement detecting function according to claim 1, characterized in that: the lead comprises a positive power supply line, a negative power supply line, a CANH signal line and a CANL signal line, the brushes further comprise a second brush, a third brush, a fourth brush and a fifth brush, a first conductive strip, a second conductive strip, a third conductive strip and a fourth conductive strip are further arranged on the resistor body, a signal processing circuit for processing a change electric signal into CAN bus standard frame format data is further arranged on the circuit board, the positive power supply line is connected with one end of the first conductive strip, the negative power supply line is connected with one end of the second conductive strip, one end of the first conductive strip is connected with one end of the resistor strip, the other end of the second conductive strip is connected with the other end of the resistor strip, and the second brush, the third brush, the fourth brush and the fifth brush are respectively connected with the first conductive strip, the second conductive strip, the third brush, the fourth brush and the fifth brush, The third conductive band and the fourth conductive band are in one-to-one corresponding contact, the second electric brush and the third electric brush are correspondingly connected with a positive power input end and a negative power input end of the circuit board respectively, the first electric brush and a signal output end of the magnetic induction chip are correspondingly connected with a signal input end of the signal processing circuit respectively, a CANH signal output end and a CANL signal output end of the signal processing circuit are correspondingly connected with the fourth electric brush and the fifth electric brush respectively, and one end of the third conductive band and one end of the fourth conductive band are correspondingly connected with the CANH signal line and the CANL signal line respectively.

3. A composite displacement sensor with linear and angular displacement detection as claimed in claim 1 or 2, characterized in that: the driving shaft penetrates through a through hole in the top of the shell from top to bottom and then is arranged in the shell, shell platforms are arranged at four corners of the bottom in the shell, the four corners of the resistor are respectively connected with the four shell platforms through screws, and the electric brush seat is located above the resistor.

4. The composite type displacement sensor with the linear displacement and angular displacement detecting function according to claim 1 or 2, characterized in that: the guide rods are two parallel to each other.