CN202048885U

CN202048885U - Magnetic induction type position detecting device

Info

Publication number: CN202048885U
Application number: CN2011201678875U
Authority: CN
Inventors: 王永
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-05-19
Filing date: 2011-05-19
Publication date: 2011-11-23
Anticipated expiration: 2021-05-19

Abstract

The utility model relates to a sensor detecting device, in particular to a magnetic induction type position detecting device, which comprises a central control processor, a shift register module, a sensitive element module and a display module. The central control processor is taken as a core processing unit; the shift register module, the sensitive element module and the display module are connected with the central control processor; the sensitive element module consists of a plurality of arrayed Hall elements; the central control processor and the shift register module read a time sequence of output states after controlling the Hall elements of the sensitive element module to be de-energized and energized and obtain output states of all Hall elements after being energized, and then the obtained output states of all Hall elements are transmitted to the display module for display after being calculated and processed. The arrayed Hall elements are taken as position detecting units, when the magnetic field intensity acted on active regions of the Hall elements is stronger than that of working points, the magnetic induction type position detecting device is in an operating state; when the magnetic field intensity acted on the active regions of the Hall elements is weaker than or equal to that of releasing points, the magnetic induction type position detecting device is in a releasing state; when the magnetic field intensity acted on the active regions of the Hall elements is weaker than that of the working points and stronger than that of the releasing points, the magnetic induction type position detecting device is in the releasing state, so that the accuracy for position detecting is enhanced, and the power consumption is reduced.

Description

The magnetic inductive position detecting device

Technical field

The utility model relates to a kind of sensor detecting device, particularly be a kind of magnetic inductive position detecting device.

Background technology

The adoptable sensitive element of magnetic inductive position probing is made up of two kinds-tongue tube and Hall element.Magnet-sensitive element has three major parameters: working point, point of release and return difference, and return difference=working point-point of release, the working point is greater than point of release.Because can there be error in the existence of return difference during measurement.Working point such as magnet-sensitive element is 100Gs, and point of release is 50Gs, and magnet makes the magnetic field intensity of the active region of sensing sensitive element reach the working point towards the crescendo of sensitive element displacement magnetic field intensity to position A during measurement, the sensitive element action.Then magnet dorsad the diminuendo of sensitive element displacement magnetic field intensity make the active region of sensing sensitive element to position B magnetic field intensity less than point of release, sensitive element discharges.The problem that exists is: A is release to this segment distance magnet of B sensitive element when the sensitive element displacement, move when mobile dorsad, the state of sensitive element depends on the state before magnet enters the A-B fragment position, the influence of return difference that Here it is, this problem makes and limited its measuring accuracy when using magnet-sensitive element to do the continuous position detection, and when using Hall element to do continuous position to measure because Hall element uses manyly, power consumption is just very big.

The utility model content

The purpose of this utility model is to provide a kind of return difference magnetic inductive position detecting device little, low in energy consumption of measuring.

The technical scheme that its technical matters that solves the utility model adopts is: the magnetic inductive position detecting device, comprise central control processor as core processing unit, and the shift register module that is connected with this central control processor, sensitive element module and display module, described sensitive element module is made up of the Hall element of several arrays, described central control processor and each Hall element of shift register module control sensitive element module are according to outage, after the energising, the sequential that reads output state again obtains output state after all Hall elements energisings and is sent to display module through calculation process and shows.

Described central control processor gives the sensitive element module each Hall element power supply by shift register module successively, every displacement one next Hall element of shift register module gets electric work, all the other Hall element dead electricity, the Hall component output state that reads electricly again, after outage, energising, the sequential that reads output state again travels through all Hall elements, and the output state that obtains after all Hall elements are switched on is sent to the display module demonstration through the central control processor calculation process.

Described central control processor by each Hall element outage of control sensitive element module after, again electric, central control processor reads the Hall element state output terminal by the control shift register module and is sent to the display module demonstration through calculation process.

After described central control processor is given each Hall element outage of sensitive element module by shift register module, power supply again, central control processor reads the Hall element state output terminal by the control shift register module and is sent to the display module demonstration through calculation process.

Described shift register module adopts MC74HC164 or MC74HC165 shift register.

By adopting above-mentioned technical scheme, the beneficial effects of the utility model are: this device adopts sensitive element arrays of modules Hall element as position detection signal, make the Hall element dead electricity earlier, Hall element is given in power supply again, read the Hall element state at last, can make the magnetic field intensity that acts on the Hall element active region like this is operating state during greater than the working point, during smaller or equal to point of release release conditions, is release conditions less than the working point during more than or equal to point of release, improve the precision of position probing, reduced power consumption.

Description of drawings

Fig. 1 is a frame assumption diagram of the present utility model;

Fig. 2 is circuit theory diagrams of the present utility model.

Embodiment

As shown in Figure 1, magnetic inductive position detecting device of the present utility model, comprise central control processor 1 as core processing unit, and the shift register module 2 that is connected with this central control processor 1, sensitive element module 3 and display module 5, described sensitive element module 3 is rearranged by several Hall elements, described central control processor 1 is logical by shift register module 2 control sensitive element modules 3 each Hall elements, off-position, and read this state and be sent to display module 5 and show that described shift register module adopts the MC74HC164 shift register.

As shown in Figure 2, Hall element Q1-Q16 by 16 arrays forms sensor, the GND output terminal of Hall element Q1-Q16 is termination power ground, ground, the OUT output terminal connects the 74164-DATA port of single-chip microcomputer, the VDD output terminal is the feeder ear of Hall element, and its supply voltage is provided by MC74HC164 shift register U1, U2.

Single-chip microcomputer is by its 74164-CLK, 74164-AB port controlling MC74HC164 shift register U1, U2, have only a Hall element to get electric work, all the other Hall elements are with regard to dead electricity, if the magnetic field intensity that sense the active region of that Hall element that must be electric is greater than its working point, its OUT output terminal output low level so, even the magnetic field intensity that sense its active region of those Hall elements of all the other dead electricity is greater than its working point, its OUT output terminal can output low level yet, the OUT output terminal of all Hall elements links together and is connected to single-chip microcomputer 74164-DATA port, single-chip microcomputer judges that by the height of judging 74164-DATA port level those Hall elements have sensed the magnetic field greater than its working point, single-chip microcomputer gets output state after electric, the treated magnet positions accurately that calculates by traveling through all Hall elements.

Power supply is earlier given to Hall element before the OUT output terminal of single-chip microcomputer on reading Hall element, reads the OUT output terminal level of Hall element again, and outage is then eliminated the return difference influence of Hall element and reduced power consumption.

Above-described only is a preferred embodiment of the present utility model, can not limit the scope that this practicality is implemented, and every equalization of being done according to the utility model claim changes and decorates, and all should still belong in the scope that the utility model contains.

Claims

1. magnetic inductive position detecting device, it is characterized in that: comprise central control processor (1) as core processing unit, and the shift register module (2) that is connected with this central control processor (1), sensitive element module (3) and display module (5), described sensitive element module (3) is made up of the Hall element of several arrays, described central control processor (1) and each Hall element of shift register module (2) control sensitive element module (3) are according to outage, after the energising, the sequential that reads output state again obtains output state after all Hall elements energisings and is sent to display module (5) through calculation process and shows.

2. magnetic inductive position detecting device according to claim 1, it is characterized in that: described central control processor (1) gives sensitive element module (3) each Hall element power supply by shift register module (2) successively, every displacement one next Hall element of shift register module (2) gets electric work, all the other Hall element dead electricity, the Hall component output state that reads electricly again, according to outage, after the energising, the sequential that reads output state again travels through all Hall elements, and the output state that obtains after all Hall elements are switched on is sent to display module (5) demonstration through central control processor (1) calculation process.

3. magnetic inductive position detecting device according to claim 1, it is characterized in that: after described central control processor (1) cuts off the power supply by each Hall element of control sensitive element module (3), again electric, central control processor (1) reads the Hall element state output terminal by control shift register module (2) and is sent to display module (5) through calculation process and shows.

4. magnetic inductive position detecting device according to claim 1, it is characterized in that: after described central control processor (1) is given each Hall element outage of sensitive element module (3) by shift register module (2), power supply again, central control processor (1) reads the Hall element state output terminal by control shift register module (2) and is sent to display module (5) demonstration through calculation process.

5. according to claim 1 or 2 or 3 or 4 described magnetic inductive position detecting devices, it is characterized in that: described shift register module (2) adopts MC74HC164 or MC74HC165 shift register.