CN2248335Y

CN2248335Y - Electronic curve length measuring apparatus

Info

Publication number: CN2248335Y
Application number: CN 95200131
Authority: CN
Inventors: 韩志岭
Original assignee: Individual
Current assignee: Individual
Priority date: 1995-01-05
Filing date: 1995-01-05
Publication date: 1997-02-26
Anticipated expiration: 2005-01-05

Abstract

The utility model relates to an electronic curve length measuring instrument, which is composed of a measuring head, a computing circuit, a liquid crystal displayer, a casing, a positioning needle, etc. The measurement of the length of a straight line, a fold line, and a curve line can be realized. The utility model is more convenient for the measurement of a curve line. The measuring accuracy of the utility model can be designed according to different needs, and the conversion calculation and general calculation of various length unit can be realized. The utility model can bring great convenience to the users who want to measure curve line length. The utility model has the advantages of novel structure, convenient operation, fast measurement, digital display of measuring result, and large measuring range. The measuring range of the utility model is thousands of times bigger than the measuring range of a general dipper stick. The utility model can be widely used in families and industries such as textiles, garments, commerce, electric power, etc.

Description

Electronics length of curve measuring instrument

The utility model provides a kind of contact-type to measure the device of length of curve, is a kind of gauging instrument of electromechanical integration.

Usually measuring length of curve is to approach testee with tape, and very loaded down with trivial details measurement is piecemeal measured very long thread and more bothered.Old curved measurement tool work amount is big, and precision is low, and speed is slow, and range is little.

The purpose of this utility model is that design is a kind ofly measured straight line, curved segments length, and has the mechano-electronic gauging instrument of especially big range, and line segment is measured, and especially the measurement of curved segments is more convenient, quick, and precision is higher.

The utility model is achieved in that the girth with the measuring head (see figure 2) is that the sampling wheel 1 of L rolls on measured object, the distance that the sampling wheel rolls across is the length of measured object, and the distance that metering sampling wheel is passed by also just draws the length of measured object.On sampling wheel, be the garden heart with its axle center, an even distribution n through hole 2 (see figure 2)s on same garden.The light that infrarede emitting diode D1 (see figure 2) is sent is by the through hole on the sampling wheel, received by phototriode T1 (see figure 2), promptly write down a pulse signal, pulse signal enters counting circuit JSDL (see figure 1), after treatment, drive LCD YJXSQ (see figure 1) and demonstrate measurement result L/n.With the rotation of sampling wheel, the light of D1 constantly is sampled wheel and blocks and pass through.Light is by m time, and then the liquid crystal display displays result is mL/n.Because the sampling wheel exists certain radian, the utility model to design pilot pin 3 (see figure 3)s, auxiliary definite starting point of measuring.Pilot pin is installed on the position of shell 6 (see figure 3) up-samplings wheel.Consider the interference of visible light, the utility model has been selected infraluminescence, receiving tube for use.

Fig. 1 is an electrical schematic diagram of the present utility model.

Fig. 2 is a measuring head synoptic diagram of the present utility model.

Fig. 3 is an external form synoptic diagram of the present utility model.

1 is the sampling wheel among Fig. 3, and 3 is pilot pin, and 4 is the calculation control key, and 5 is LCDs, and 6 is shell.

Structure and experiment from figure show, the designed electronics length of curve measuring instrument of the utility model is the mechano-electronic gauging instrument that a kind of contact-type is measured curve, straight line line segment length, and it is made up of measuring head, counting circuit, LCD, shell and pilot pin etc.The minimum profile curvature radius of its measurement be decided by the to sample radius of wheel, measuring accuracy be decided by the to sample precision of wheel and the number that the sampling wheel is gone up uniform through hole.Its novel structure, easy and simple to handle, to measure fast, the measurement result numeral shows that range is big, range is several thousand times of general measure chi, and is accurate than the general measure means, also can carry out the conversion and the general calculating of all lengths unit.Can be widely used in industry and families such as weaving, clothes, commerce, electric power.

Claims

1, a kind of electronics length of curve measuring instrument, it comprises: measuring head, counting circuit, LCD, shell and pilot pin etc., it is characterized by measuring head and connect counting circuit, counting circuit connects LCD, measuring head, counting circuit, LCD are installed in the shell, and pilot pin is installed on the position of measuring head on the shell.

2, it is characterized in that according to claims 1 described measuring instrument: measuring head comprises: sampling wheel (1), infrarede emitting diode (D1), phototriode (T1), the light that infrarede emitting diode sends is by the through hole (2) on the sampling wheel, received by phototriode, obtain the digital signal of measured object length.

3, measuring instrument according to claim 1 is characterized in that: pilot pin (3) is installed on the position that shell (6) is gone up measuring head, auxiliary definite starting point of measuring.