CN2926992Y

CN2926992Y - Tilet angle sensor

Info

Publication number: CN2926992Y
Application number: CN 200620200254
Authority: CN
Inventors: 钟涛; 倪巡
Original assignee: SHANGHAI RUIKE SPORTS GOODS CO Ltd
Current assignee: SHANGHAI RUIKE SPORTS GOODS CO Ltd
Priority date: 2006-03-14
Filing date: 2006-03-14
Publication date: 2007-07-25
Anticipated expiration: 2016-03-14

Abstract

The utility model relates to an inclined-angle sensor, which is composed of a hall element, a swinging alnico and a shell body. A weight dropper is positioned in the shell body, and the alnico is arranged on the weight dropper. The weight dropper can swing freely in a certain range of the shell body, and the hall element is positioned in the shell body. The weight dropper is always square to the horizontal surface because of gravity effect, so when the installation surface of the sensor has a certain angle with the horizontal surface, the hall element produces excursion with respect to the alnico, and the voltage or outlet resistance transferred by the hall element make changes so as to check out the inclination state, a switch signal is sent out through a comparing circuit or by the hall element. The utility model is characterized in that: the freely swinging structure with alnico weight dropper and hall magnetism sensing technique are adopted, and sealed in the shell body. The utility model is of simple structure, low cost, high reliability and long uses life, which is not easy to be destroyed and applicable to the inclination sensing.

Description

A kind of gradient sensor

Technical field

The utility model is a kind of angle of bank measurement sensor, belongs to electronic technology.Use this sensor can in gravity field, detect 0 ~ ± 90 ° of scope, can be used for angle sensor and measurement with interior angle of inclination.

Background technology

Development along with automatic technology, in building machinery, robot, medical health apparatus and the wheel Wheel-chair of riding instead of walk, keep correct set, steadily of centre of gravity, the angle of inclination is controlled and dangerous angle is reported to the police and limited, and the detection at angle of inclination is indispensable.The gradient sensor of having developed at present has some forms such as potentiometer type, differential transformer type, capacitance type, servo type, photoelectric type.But there is following weak point to some extent in existing gradient sensor: (1), complex structure, manufacture craft require high, and cost is very high.(2), anti-vibration characteristic is not good, environment for use requires high.(3), poor durability, use output characteristics variation after a period of time, cause the sensing error.

Summary of the invention

The purpose of this utility model is the novel sensor that proposes a kind of angle of bank measurement, and this gradient sensor adopts Hall element and magnet steel, can directly export and the angle of inclination corresponding voltage signal.

Scheme of the present utility model is: use linear hall element and magnet steel among Fig. 1 to form gradient sensor, this magnet steel is installed on the weight, and weight is hung on stationary shaft by bearing, and the two ends of stationary shaft tightly are fixed in the housing.Magnet steel is an arc magnetic shoe, and N and S magnetic pole are distributed in the two ends of magnetic shoe extrados respectively.This piece magnet steel also can be two among Fig. 4, with the extremely relative two ends that are placed in the lower camber side of weight with S of the N utmost point.

Because the utility model has adopted such scheme, so the voltage dynamic range of output is big, form a kind of simple in structure, with low cost, safe and reliable sensor has shock resistance preferably, anti-vibration, can adapt to the varying environment requirement, can save the signal amplifier that general angular transducer all needs, be advantageously connected to single-chip microcomputer or other circuit is handled, this sensor can satisfy many users detected and measured control to the angle of inclination needs.

Description of drawings

Provide the detailed description of the utility model below in conjunction with accompanying drawing.

Fig. 1 is a principle schematic of the present utility model.

Fig. 2 is the synoptic diagram of sensor when being in clockwise extreme position.

Fig. 3 is the synoptic diagram of sensor when being in counterclockwise extreme position.

Fig. 4 adopts two blocks of relative magnet steel of polarity to replace the synoptic diagram of the arc magnet steel among Fig. 1.

In Fig. 1, (1) housing, (2) bearing, (3) axle, (4) weight, (5) magnet steel, (6) Hall element, (7) vibration damping spring, (5) regulate bolt, (6) base plate.

Embodiment

This programme is by linear hall element and can swings magnet steel and constitute sensor, sees Fig. 1.Dispose weight in the sensor, magnet steel is installed on this weight, and weight can freely swing in the certain limit in housing, and linear hall element is installed on the housing of sensor.Owing to be subjected to gravitational effect weight all the time perpendicular to the level ground, therefore when installed surface with the level ground at an angle the time linear hall element with respect to magnet steel between generation be offset, voltage by linear hall element output changes, this magnitude of voltage, be proportional to the pitch angle of this sensor, thereby detect the angle of inclination about the level ground.

When sensor was in Fig. 1 horizontal level, the lower camber side center of weight faced linear hall element, and the magnetic field at this center is close to 0, when the power supply that offers Hall element is 5V voltage, and the about 2.5V of hall element output voltage; When sensor was in clockwise extreme position among Fig. 2, the S utmost point magnet steel on the weight faced linear hall element, and the magnetic field at this place is close to negative maximal value, when the power supply that offers Hall element is 5V voltage, and the about 0.9V of hall element output voltage; When sensor was in counterclockwise extreme position among Fig. 3, the N utmost point magnet steel on the weight faced linear hall element, and the magnetic field at this place is close to positive maximal value, when the power supply that offers Hall element is 5V voltage, and the about 4.2V of hall element output voltage.When sensor was between counterclockwise extreme position and the mid point, the N utmost point section magnet steel on the weight was facing to linear hall element, when the power supply that offers Hall element is 5V voltage, the hall element output voltage value at 2.5V between the 4.2V.When sensor was between clockwise extreme position and the mid point, the S utmost point section magnet steel on the weight was facing to linear hall element, when the power supply that offers Hall element is 5V voltage, the hall element output voltage value at 0.9V between the 2.5V.

This shows, in whole tilting procedure, Hall element corresponding all the time an ad-hoc location on the magnet steel, thereby export different voltage, like this, by measuring the angle that output voltage has just known that device tilts.

When the angular range that detects hour, Fig. 4 adopts two blocks of relative magnet steel of polarity to replace the arc magnet steel among Fig. 1 to have identical detection effect.

Claims

1. gradient sensor, it is characterized in that: it uses linear hall element and magnet steel to form gradient sensor, this magnet steel is installed on the weight that can rotate with angle change, magnet steel can be the arc magnetic shoe, also can be the separation magnetic patch that two opposed polarities are laid relatively.