CN203396360U - Oid digital length ruler - Google Patents

Abstract

The utility model discloses an OID digital length ruler and belongs to the metering technical field. The OID digital length ruler comprises an OID code-reading device and an OID image scale imitating a calibrated scale. Infrared light emitted by the OID code-reading device irradiates the OID image scale to generate reflected light, and the reflected light enters into the OID code-reading device. The OID digital length ruler is simple in structure and novel in construction. By utilizing an OID information-recording function and through combination with an OID printing technology, OIDs for length measuring are arranged and printed on the measuring ruler in order to form the OID image scale imitating the calibrated scale, the OIDs are read by the OID code-reading device and are decoded, length or height is displayed through an LCD, length or height measuring application is achieved, measurement accuracy can reach at least 1mm more or less, the measurement accuracy is improved at a certain degree compared with ultrasonic measurement accuracy, and negative influences of ambient temperature and humidity on the measurement accuracy are eliminated. Reading speed, correctness, ESD protection and other aspects of performance are greatly enhanced.

Description

OID digital length chi

Technical field

The utility model relates to a kind of length ruler, relates in particular to a kind of OID (optical recognition code, optical identification code) digital length chi, belongs to field of measuring techniques.

Background technology

At present, the decoding principle of digital length or height ruler mainly contains capacitance-grid type and raster pattern, capacitance-grid type is called again capacitance digital scrambler, and it mainly utilizes two can relatively move and surface is provided with the capacitance variations that the assembly of electrode produces when relative displacement and carrys out measurement length; Raster pattern is called again photoelectric digital scrambler, and it mainly utilizes a light source and two to relatively move and surface is provided with the assembly of grating, and the pulse change producing when relative displacement is carried out measurement length.

Above-mentioned two kinds of method for measurement all utilize the mode of progression counting, must remember initial value, generally can not shut down, or again start shooting and need to manually make zero after shutdown, cannot realize the function that start just can be read, and it is inconvenient to use; Meanwhile, when measuring, operating speed is had to certain restriction, the sensed speed that capacitance variations or pulse can occur as excessive velocities, lower than operating speed, causes and measure inaccurate result, and because scale adopts metal material, ESD protective capacities is poor.

Utility model content

The purpose of this utility model is the above-mentioned shortcoming that overcomes current digital length or height ruler.

For achieving the above object, the technical solution of the utility model is as follows:

A kind of OID digital length chi is provided, comprises OID reading code equipment and imitate the OID image rulers of rule, the Infrared irradiation that OID reading code equipment sends enters OID reading code equipment to the reflected light after OID image rulers.

Described OID reading code equipment comprise can identification OID code ccd image sensor, magnifier, two infrared LEDs, OID demoder and the LCD of auxiliary ccd image sensor identification OID code, OID reading code equipment is provided with light hole, from light hole, be arranged in order inward infrared LED, magnifier and ccd image sensor, the center of magnifier and ccd image sensor on an axis, two infrared LEDs are symmetrically arranged in axis both sides, ccd image sensor output terminal is connected with OID demoder, and OID demoder output terminal is connected storage and LCD respectively.

Described each row's of OID image rulers OID code is identical, and the OID code of every row is different, and each OID code is of a size of 0.423 * 0.508mm.

The printing of described OID image rulers adopts the OID printing of four looks, and the colored printing of C, M and Y tri-editions is added to the printing of K version OID ins and outs, prints the ink carbon containing of K version OID ins and outs, and the ink that printing C, M and Y are tri-editions is carbon containing not.

The utility model is simple in structure, and structure is novel, utilizes the function that OID can recorded information, in conjunction with OID

Printing technology, OID code for length metering is arranged in order and is printed on surveyors' staff, to construct the OID image rulers of imitating rule, with OID reading code equipment, read OID code, and decode, by LCD, demonstrate length or height, realize the application that length or height are measured, at least can reach ± 1mm of measuring accuracy, relatively hyperacoustic measuring accuracy is improved to some extent, and has avoided environment temperature and the adverse effect of humidity to measuring accuracy; In reading speed, the performance of the aspects such as correctness and ESD protection strengthens greatly.

Accompanying drawing explanation

Fig. 1 is OID code schematic diagram;

Fig. 2 is OID image rulers schematic diagram;

Fig. 3 is OID image rulers printing schematic diagram;

Fig. 4 is OID reading code equipment principle block diagram.

In figure: 1.CCD imageing sensor, 2. magnifier, 3. infrared LED, 4.OID demoder, 5. storer, 6.LCD, 7. light hole.

Embodiment

Below in conjunction with accompanying drawing, the utility model is described in further detail:

Each OID code represents a digital code, can discharge 65536 different codes, it shown in Fig. 1, is exactly OID code, minimum dimension can be accomplished 0.423 * 0.508mm, need to reach 48 * 40 pixel, so minimum pixel is of a size of 0.01058 * 0.01058mm, for guaranteeing precision, its printing precision will reach 2400 * 2400dpi.

As shown in Figure 2, different OID codes are printed to arrangement, the OID code that can set each row is identical, and the OID code of every row is different.As adopt OID code to be of a size of 0.423 * 0.508mm, can reach ± 0.5mm of the precision of linear measure longimetry.When optical identification recognition of devices arrives these OID codes, will tell different codes, according in house software computing, draw concrete length.

As shown in Figure 3, imitate the printing of the OID image rulers of rule to adopt the OID of four looks to print, exactly the colored printing of three editions is added to the printing of an OID ins and outs, will, K version during original four editions printings, be incorporated to respectively among C, M and Y version, except printing the necessary carbon containing of ink of ins and outs, remaining ink all can not carbon containing.The ink configuration of four editions OID printings is as follows:

(1) print C version ink used → normally print C ink;

(2) print M version ink used → normally print M ink;

(3) print Y version ink used → normally print Y ink;

(4) ink of printing OID ins and outs ink → use used carbon containing is printed.

As shown in Figure 4, OID reading code equipment comprises ccd image sensor 1 that can identification OID code, the magnifier 2 of auxiliary ccd image sensor identification OID code, two infrared LEDs 3, OID demoder 4 and LCD6, OID reading code equipment is provided with light hole 7, from light hole 7, be arranged in order inward infrared LED 3, magnifier 2 and ccd image sensor 1, the center of magnifier 2 and ccd image sensor 1 on an axis, two infrared LEDs 3 are symmetrically arranged in this axis both sides, ccd image sensor 1 output terminal is connected with OID demoder 4, OID demoder 4 output terminals connect respectively eeprom memory 5 and LCD6.

Infrared LED 3 irradiates OID image rulers as light source by light hole 7, for the identification of OID code provides suitable intensity of illumination, magnifier 2 is received from the reflected light of OID image rulers and is converged to ccd image sensor 1 by light hole 7, ccd image sensor 1 can identification OID code, OID demoder 4 is decoded into digital signal by the OID code of ccd image sensor 1 identification, and be stored in the middle of EEPROM reservoir 5, be transferred to LCD6 simultaneously and show.Such a system is equivalent to a people and is seeing scale with eyes, sees clearly after scale and records or say with pen.

Claims (1)

1. an OID digital length chi, is characterized in that: comprise OID reading code equipment and imitate the OID image rulers of rule, the Infrared irradiation that OID reading code equipment sends enters OID reading code equipment to the reflected light after OID image rulers;

Described OID reading code equipment comprise can identification OID code ccd image sensor, magnifier, two infrared LEDs, OID demoder and the LCD of auxiliary ccd image sensor identification OID code, OID reading code equipment is provided with light hole, from light hole, be arranged in order inward infrared LED, magnifier and ccd image sensor, the center of magnifier and ccd image sensor on an axis, two infrared LEDs are symmetrically arranged in axis both sides, ccd image sensor output terminal is connected with OID demoder, and OID demoder output terminal is connected storage and LCD respectively.

2. OID digital length chi according to claim 1, is characterized in that: described each row's of OID image rulers OID code is identical, and the OID code of every row is different, and each OID code is of a size of 0.423 * 0.508mm.

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