CN205311165U

CN205311165U - Precision measurement electron compasses

Info

Publication number: CN205311165U
Application number: CN201620011703.9U
Authority: CN
Inventors: 刘会彩; 谢凤艳; 李东方
Original assignee: Individual
Current assignee: Individual
Priority date: 2016-01-08
Filing date: 2016-01-08
Publication date: 2016-06-15
Anticipated expiration: 2026-01-08

Abstract

The utility model provides a precision measurement electron compasses, includes the swing handle, the pivot, and a foot, the stabilizer blade is equipped with angle sensor in the pivot, and a sole portion has inserted photoelectric sensor, embedding display control box on the stabilizer blade. The utility model discloses an angle sensor and photoelectric sensor can be very simple radius, arc length, the central angle of measurement arc, need not other appurtenance such as chi, protractor, pen, the drawing precision is high, it is nimble convenient to use, can improve work efficiency.

Description

A kind of accurate measurement electronic compass

Technical field

This utility model relates to a kind of compasses, particularly a kind of can the compasses of accurate measurement.

Background technology

Drawing or in the teaching process of drawing course, compasses are used to the indispensable instrument carrying out drawing circle or circular arc, are usually used in construction with ruler and compasses. Traditional compasses include swing handle, rotating shaft, leg and a foot, equipped with positioning needle on leg, equipped with pen core on a foot. During drawing, leg and a foot are pulled open certain angle by rotating shaft, determine the center of circle with leg, then draw circular arc with a foot. When needs precision drafting, during as a circle determining radius value or circular arc need to be drawn, the distance of ruler measurement leg and a toe end to be passed through. During as the circular arc of the circular arc of certain angle central angle or certain length need to be drawn, first first to measure the terminal of circular arc according to the starting point in the center of circle and circular arc with protractor and pen, cumbersome also lose time.

Summary of the invention

For solving the deficiency in above-mentioned prior art, this utility model provides a kind of accurate measurement electronic compass.

The technical solution of the utility model is: a kind of accurate measurement electronic compass, including swing handle, rotating shaft, a foot, leg, it is characterized in that, being connected with rotating shaft below swing handle, be provided with angular transducer in rotating shaft, angular transducer is connected with a foot and leg respectively, foot bottom is inserted with photoelectric sensor, leg embeds display and controls box.

Described display controls box surface LCDs and button, and inside is provided with control circuit, buzzer and battery.

Described angular transducer, photoelectric sensor and display control to be connected by electric wire between box.

Operation principle of the present utility model is as follows:

When needing drafting one to determine radius arc, leg and a foot are pulled open certain angle by rotating shaft, angular transducer records the angle of the angle between leg and a foot, control the control circuit in box to display corresponding data transfer, owing to the length of leg and a foot is fixing, control circuit can calculate distance and the radius of leg and a toe end by the cosine law, and is shown by LCDs.

When needing the circular arc drawing the circular arc of certain angle central angle or certain length, arc length or angle value can be controlled the key-press input on box by display, while circular arc drawn by the pen core of foot, the photoelectric sensor of foot bottom synchronizes to record distance and the arc length value of movement, analog value being transferred to display and controls the control circuit in box, control circuit calculates the angle of central angle according to known radius value and this arc length value by arc length computing formula.When length or the angle arrival setting value of arc, buzzer can send prompting.

This utility model one accurate measurement electronic compass, owing to have employed technique scheme, so as to compared with prior art, has the following advantages that and good effect:

This utility model can very simply measure the radius of arc, arc length, central angle by angular transducer and photoelectric sensor, it is not necessary to other aids such as chi, protractor, pen, and drafting accuracy is high, flexible and convenient to use, it is possible to improve work efficiency.

Accompanying drawing explanation

Fig. 1 is this utility model structural representation;

In figure: swing handle 1, rotating shaft 2, a foot 3, leg 4, angular transducer 21, photoelectric sensor 31, display controls box 41.

Detailed description of the invention

This utility model includes swing handle 1, rotating shaft 2, a foot 3, leg 4, angular transducer 21, photoelectric sensor 31 as shown in Figure 1, and display controls box 41. Being connected with rotating shaft 2 below swing handle 1, be provided with angular transducer 21 in rotating shaft 2, angular transducer 21 is connected with a foot 3 and leg 4 respectively, is inserted with photoelectric sensor 31 bottom a foot 3, leg 4 embeds display and controls box 41. Display controls box 41 surface LCDs, and LCDs can show the metrical informations such as radius, angle, arc length, unit, and button includes toggle switch, for the switch of power supply; System permutator, for the switching between metric system and English system; Upwards switch and downwards switch, be used for inputting setting value. Display controls box 41 inside and is provided with control circuit, buzzer and battery. Control circuit includes control chip and other electronic devices and components, for programme-control. Control to be connected by electric wire between box 41 in angular transducer 21, photoelectric sensor 31 and display.

The above is embodiment of the present utility model; not thereby the scope of the claims of the present utility model is limited; every equivalent structure utilizing this utility model description and accompanying drawing content to make or equivalence flow process conversion; or directly or indirectly it is used in other relevant technical fields, all in like manner include in scope of patent protection of the present utility model.

Namely this utility model is suitable for drawing teaching and the drawing of school, is also suitable for enterprises and institutions staff and draws use.

Claims

1. an accurate measurement electronic compass, including swing handle, rotating shaft, foot, leg, it is characterised in that, rotating shaft it is connected with below swing handle, being provided with angular transducer in rotating shaft, angular transducer is connected with a foot and leg respectively, and a foot bottom is inserted with photoelectric sensor, leg embeds display and controls box, described display controls box surface LCDs and button, and inside is provided with control circuit, buzzer and battery, and described angular transducer, photoelectric sensor and display control to be connected by electric wire between box.