WO2021097896A1

WO2021097896A1 - Electronic ruler

Info

Publication number: WO2021097896A1
Application number: PCT/CN2019/121790
Authority: WO
Inventors: 胡文亮; 彭圣
Original assignee: 珠海市易迅科技有限公司
Priority date: 2019-11-21
Filing date: 2019-11-29
Publication date: 2021-05-27
Also published as: CN110881728A

Abstract

An electronic ruler, comprising: a housing (100), which is provided with a ruler tape outlet (110); a rotating wheel (200), which is rotatingly provided within the housing (100), a ruler tape and an elastic reset piece being provided on the rotating wheel (200), and one end of the ruler tape being penetratingly disposed in the ruler tape outlet (110); a grating wheel (300), which is connected to and provided coaxial with the rotating wheel (200), grating graduations (301) being provided on the grating wheel (300); a photoelectric sensor (400), which is provided on one side of the grating wheel (300) and is used for reading the grating graduations (301); and a data acquisition circuit board (500), which is electrically connected to the photoelectric sensor (400) and is used for metering the grating graduations (301). Compared with a rolling encoder, the photoelectric sensor (400) has higher precision, which is beneficial to improving the precision of measurement. The grating wheel (300) and the rotating wheel (200) are connected and are coaxially provided. Compared with non-coaxial provision, a transmission structure may be omitted, thus measurement errors caused by poor contact of a transmission structure and like reasons may be avoided, synchronous rotation between the grating wheel (300) and the rotating wheel (200) is achieved, and the precision of measurement is improved.

Description

electric gauge

Technical field

The invention relates to the technical field of clothing tools, in particular to an electronic ruler.

Background technique

In the clothing industry, the size of clothing is generally measured manually through an electronic ruler. The current electronic ruler has the following defects: 1) the measurement accuracy is not high; 2) it is inconvenient to measure the corners of the clothing; 3) the measurement efficiency is low.

Summary of the invention

The present invention aims to solve at least one of the technical problems existing in the prior art. For this reason, the present invention provides an electronic ruler, which can improve the measurement accuracy.

An electronic ruler according to an embodiment of the first aspect of the present invention includes a housing provided with a rule tape outlet; a rotating wheel is rotatably arranged in the housing, and the rotating wheel is provided with a rule tape and an elastic reset member. One end of the scale tape passes through the outlet of the scale tape; the grating wheel is connected to the rotating wheel and arranged coaxially, and the grating wheel is provided with grating scales; the photoelectric sensor is arranged on one side of the grating wheel, Used for reading the grating scale; a data acquisition circuit board, electrically connected with the photoelectric sensor, for measuring the grating scale.

The electronic ruler according to the embodiment of the present invention has at least the following beneficial effects:

Compared with the rolling encoder, the photoelectric sensor has higher accuracy, which is beneficial to improve the measurement accuracy. The grating wheel is connected to the runner and arranged coaxially. Compared with the non-coaxial arrangement, the transmission structure can be omitted, and the transmission structure can be avoided. The measurement error caused by poor structural contact, etc., realizes the synchronous rotation between the grating wheel and the runner, and improves the measurement accuracy.

According to some embodiments of the present invention, the tape exit is provided with an extension.

According to some embodiments of the present invention, the extension part is formed of a light-transmitting material.

According to some embodiments of the present invention, a return-to-zero detection sensor is provided on one side of the tape, a return-to-zero mark is provided on the tape, and the return-to-zero detection sensor is electrically connected to the data acquisition circuit board, The return-to-zero detection sensor is used to detect the return-to-zero mark on the tape.

According to some embodiments of the present invention, the data acquisition circuit board includes a microprocessor and a wireless communication module electrically connected to the microprocessor.

According to some embodiments of the present invention, the housing is provided with a key module and a display module, the key module and the display module are respectively electrically connected to the microprocessor, and the key module is used to transmit an operation signal It is sent to the wireless communication module through the microprocessor, and the wireless communication module is used to send the operation signal to the terminal device, and receive the response signal from the terminal device, and pass the response signal through the terminal device. The microprocessor sends to the display module.

According to some embodiments of the present invention, one side of the runner is provided with a mounting cavity for mounting the elastic reset member, a shaft mounting hole is provided at the axis of the runner, and the mounting cavity is provided with A fixing part connected with the elastic reset part.

According to some embodiments of the present invention, a first rotating shaft mounting plate and a second rotating shaft mounting plate are respectively provided on both sides of the runner, and the first rotating shaft mounting plate and the second rotating shaft mounting plate are respectively connected to the housing A rotating shaft is provided on the first rotating shaft mounting plate, and the rotating shaft passes through the rotating shaft mounting hole and is connected to the second rotating shaft mounting plate.

According to some embodiments of the present invention, the runner and the grating wheel are integrally formed.

According to some embodiments of the present invention, the protruding length of the ruler tape

Wherein, D is the circumference of the grating wheel, d is the thickness of the tape after winding, n is the number of rotations of the grating wheel, and X is the compensation value.

The additional aspects and advantages of the present invention will be partly given in the following description, and partly will become obvious from the following description, or be understood through the practice of the present invention.

Description of the drawings

The above and/or additional aspects and advantages of the present invention will become obvious and easy to understand from the description of the embodiments in conjunction with the following drawings, in which:

FIG. 1 is one of the structural schematic diagrams of an electronic ruler according to an embodiment of the present invention;

2 is a schematic diagram of the internal structure of the electronic ruler shown in FIG. 1;

Fig. 3 is the second structural diagram of the electronic ruler according to the embodiment of the present invention;

Fig. 4 is a schematic block diagram of an electronic ruler according to an embodiment of the present invention;

Fig. 5 is an exploded schematic diagram of the electronic ruler shown in Fig. 3;

Fig. 6 is a schematic diagram of the grating wheel of the electronic ruler shown in Fig. 5;

Fig. 7 is an exploded schematic diagram of the assembly of the grating wheel of the electronic ruler shown in Fig. 5.

Detailed ways

The embodiments of the present invention are described in detail below. Examples of the embodiments are shown in the accompanying drawings, in which the same or similar reference numerals indicate the same or similar elements or elements with the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary, and are only used to explain the present invention, but should not be understood as limiting the present invention.

In the description of the present invention, unless otherwise clearly defined, terms such as setting, installation, and connection should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meaning of the above terms in the present invention in combination with the specific content of the technical solution.

1 and 2, this embodiment discloses an electronic ruler, which includes a housing 100, a runner 200, a grating wheel 300, a photoelectric sensor 400, and a data acquisition circuit board 500. The housing 100 is provided with a tape outlet 110 The runner 200 is rotatably arranged in the housing 100, and the runner 200 is provided with a ruler tape (not shown) and an elastic reset member (not shown), and the elastic reset member is used to enable the ruler tape to be rolled back after being pulled out . One end of the tape is threaded through the tape outlet 110; the grating wheel 300 is connected to the rotating wheel 200 and arranged coaxially. The grating wheel 300 is provided with grating scales 301. The grating scales 301 may be uniformly distributed on the edge of the grating wheel 300. Hole; the photoelectric sensor 400 is arranged on one side of the grating wheel 300, the photoelectric sensor 400 is used to read the grating scale 301; the data acquisition circuit board 500 is electrically connected with the photoelectric sensor 400, and the data acquisition circuit board 500 is used to measure the grating scale 301. The data acquisition circuit board 500 is powered by a battery.

Compared with the rolling encoder, the photoelectric sensor 400 has higher accuracy, which is beneficial to improve the measurement accuracy. The grating wheel 300 is connected to the rotating wheel 200 and arranged coaxially. Compared with the non-coaxial arrangement, the transmission structure, such as gears, can be omitted. , And can avoid measurement errors caused by poor contact of the transmission structure, etc., realize the synchronous rotation between the grating wheel 300 and the rotating wheel 200, and improve the measurement accuracy.

Please refer to Figure 3, because some clothes, such as women’s underwear, have protrusions or depressions, which have corners and are small in size. When using an electronic ruler for manual measurement, in order to facilitate the measurement of this part, the tape outlet 110 is provided with The extension part 111, and the ruler tape passes through the extension part 111. When measuring, the operator fixes one end of the tape with one hand, and uses the electronic ruler with the other hand to attach the extension 111 to the corner of the raised or recessed part of the clothing to fix the other of the tape. At one end, the ruler can be close to the corner of the raised or recessed part of the clothing, which is convenient for measuring the raised or recessed part of the clothing and reduces the measurement error.

In order to facilitate the reading by the operator, the extension 111 is formed of a light-transmitting material, and the light-transmitting material can be acrylic or glass.

4 and 5, in order to further improve the measurement accuracy of the electronic ruler, a zero return detection sensor 600 is provided on one side of the tape, and a zero return mark (not shown) is provided on the tape. The zero return detection sensor 600 and The data acquisition circuit board 500 is electrically connected, and the zero return detection sensor 600 is used to detect the zero return mark on the tape. The zero detection sensor 600 adopts a magnetic sensor, and the zero mark adopts a magnetic strip. When the tape is in the initial state of rewinding, the zero detection sensor 600 detects the zero mark, and the zero detection sensor 600 generates a zero signal to make the ruler The count of the belt is cleared to ensure that the measurement starting point is correct, and the measurement accuracy is improved. When the tape is pulled out, the reset mark moves with the tape, the reset detection sensor 600 cannot detect the reset mark, and the data acquisition circuit board 500 starts to calculate The number of rotations of the grating wheel 300. The return-to-zero detection sensor 600 can also adopt a slot-type photocoupler, and the return-to-zero mark can be a through hole provided on the tape.

Specifically, the data acquisition circuit board 500 includes a microprocessor 510 and a wireless communication module 520 electrically connected to the microprocessor 510. The wireless communication module 520 may adopt a Bluetooth module, a WIFI module, or a GPRS module. The wireless communication module 520 is used to connect to a terminal device, and the terminal device may be a mobile phone or a tablet computer. The photoelectric sensor 400 sends the collected signal to the microprocessor 510, and the microprocessor 510 sends the signal to the terminal device through the wireless communication module 520 to realize automatic entry of measurement data. Compared with manual recording of measurement data, it can save paper cost , Improve measurement efficiency and data entry efficiency, avoid manual data entry errors, and the measurement data entered in this embodiment is electronic data, which is convenient for subsequent data processing and extended applications.

3 to 5, the housing 100 is provided with a key module 700 and a display module 800, the key module 700 and the display module 800 are respectively electrically connected to the microprocessor 510, the key module 700 is used to process the operating signal through the micro-processing The device 510 is sent to the wireless communication module 520, and the wireless communication module 520 is used to send an operation signal to the terminal device and receive a response signal from the terminal device, and send the response signal to the display module 800 through the microprocessor 510. The function of the key module 700 is similar to that of remote control, and the key module 700 can remotely operate the cursor of the terminal device and preset function modules. Specifically, the data entry form of the terminal device is EXCEL or WORD, and the key module 700 can remotely operate the cursor of the terminal device to move the cursor up, down, left, and right, or perform operations such as confirming and resetting, making the application of the electronic ruler more flexible and convenient.

Referring to FIG. 6, one side of the runner 200 is provided with a mounting cavity 210 for installing the elastic reset member, the shaft of the runner 200 is provided with a shaft mounting hole 211, and the mounting cavity 210 is provided with a fixing for connecting the elastic reset member. Pieces 212. The elastic reset member is installed in the installation cavity 210 of the runner 200, which can make full use of the internal space of the housing 100, which is beneficial to reduce the size of the electronic ruler.

Referring to FIGS. 5 to 7, a first shaft mounting plate 910 and a second shaft mounting plate 920 are respectively provided on both sides of the runner 200, and the first shaft mounting plate 910 and the second shaft mounting plate 920 are respectively connected to the housing 100 A rotating shaft 911 is provided on the first rotating shaft mounting plate 910, and the rotating shaft 911 passes through the rotating shaft mounting hole 211 and is connected to the second rotating shaft mounting plate 920. The elastic return piece in this embodiment adopts a coil spring. During assembly, one end of the elastic return piece is connected to the rotating shaft 911, and the other end of the elastic return piece is connected to the fixed piece 212.

The runner 200 and the grating wheel 300 are integrally formed, which is convenient for processing and assembly, and can ensure that the runner 200 and the grating wheel 300 are coaxially arranged, avoiding the measurement error caused by the eccentricity of the runner 200 and the grating wheel 300, which is beneficial to improve the measurement Accuracy.

Extension length of the tape

Wherein, D is the circumference of the grating wheel 300, d is the thickness of the tape after winding, n is the number of rotations of the grating wheel 300, and X is the compensation value. Specifically, the circumference D, the thickness d and the compensation value X are fixed values. In the initial state, the point where the scale tape and the wheel 200 are tangent is point A, and the zero scale point on the scale tape is point B, then the compensation value X is equal to the length between point A and point B, and the number of rotations n is measured by the photoelectric sensor 400. During the measurement process, the winding thickness of the scale tape will gradually decrease as the scale tape is pulled, and there is a non-linear relationship between the extension length L of the scale tape and the rotation angle of the grating wheel 300 or the rotating wheel 200. The formula (1) can accurately calculate the extension length L of the tape, which is beneficial to improve the accuracy of measurement.

The embodiments of the present invention are described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above-mentioned embodiments. Within the scope of knowledge possessed by those of ordinary skill in the technical field, various modifications can be made without departing from the purpose of the present invention. Kind of change.

Claims

An electronic ruler, characterized in that it comprises:

The housing (100) is provided with a ruler tape outlet (110);

The runner (200) is rotatably arranged in the housing (100), the runner (200) is provided with a ruler belt and an elastic reset member, and one end of the ruler belt passes through the ruler belt outlet ( 110);

The grating wheel (300) is connected to the rotating wheel (200) and arranged coaxially, and the grating wheel (300) is provided with a grating scale (301);

The photoelectric sensor (400) is arranged on one side of the grating wheel (300) and is used to read the grating scale (301);

The data acquisition circuit board (500) is electrically connected with the photoelectric sensor (400), and is used for measuring the grating scale (301).
The electronic ruler according to claim 1, wherein the ruler tape outlet (110) is provided with an extension (111).
The electronic ruler according to claim 2, characterized in that the extension part (111) is formed of a light-transmitting material.
The electronic ruler according to claim 1, characterized in that a zero return detection sensor (600) is provided on one side of the ruler tape, a zero return mark is provided on the ruler tape, and the zero return detection sensor (600) ) Is electrically connected to the data acquisition circuit board (500), and the zero return detection sensor (600) is used to detect the zero return mark on the ruler tape.
The electronic ruler according to claim 1, wherein the data acquisition circuit board (500) comprises a microprocessor (510) and a wireless communication module (520) electrically connected to the microprocessor (510) .
The electronic ruler according to claim 5, characterized in that a key module (700) and a display module (800) are provided on the casing (100), and the key module (700) and the display module (800) ) Are respectively electrically connected to the microprocessor (510), the key module (700) is used to send operation signals to the wireless communication module (520) through the microprocessor (510), and the wireless The communication module (520) is used to send the operation signal to the terminal device and receive the response signal from the terminal device, and send the response signal to the display module ( 800).
The electronic ruler according to claim 1, wherein one side of the runner (200) is provided with a mounting cavity (210) for mounting the elastic reset member, and the axis of the runner (200) A shaft mounting hole (211) is provided at the position, and a fixing member (212) for connecting the elastic reset member is provided in the mounting cavity (210).
The electronic ruler according to claim 7, characterized in that a first shaft mounting plate (910) and a second shaft mounting plate (920) are respectively provided on both sides of the runner (200), and the first shaft The mounting plate (910) and the second rotating shaft mounting plate (920) are respectively connected to the housing (100), the first rotating shaft mounting plate (910) is provided with a rotating shaft (911), the rotating shaft (911) ) Penetrates the shaft mounting hole (211) and is connected to the second shaft mounting plate (920).
The electronic ruler according to claim 1, wherein the rotating wheel (200) and the grating wheel (300) are integrally formed.
The electronic ruler according to claim 1 or 2, wherein the extension length of the ruler tape

Wherein, D is the circumference of the grating wheel (300), d is the thickness of the tape after winding, n is the number of rotations of the grating wheel (300), and X is the compensation value.