CN203908487U - Portable measuring device for cable thickness measurement - Google Patents

Abstract

The utility model discloses a portable measuring device for cable thickness measurement, which comprises a base plate, a lead screw fixed on the base plate, a floating knife, an angle sensor, a single-chip microcomputer and a digital display; the lower end of the floating knife is driven by a screw The mechanism is connected with the lead screw; one end of the lead screw is provided with an angle sensor for detecting its rotation angle; the angle sensor directly transmits the received current or voltage signal containing the rotation angle to the digital-to-analog conversion function The single-chip microcomputer or the digital-to-analog conversion module transmits to the single-chip microcomputer; the single-chip microcomputer processes the received signal and transmits it to the digital display; the digital display displays the received signal in digital form. The device is small in size, uses digital display to overcome human eye errors, and uses an angle sensor to detect the angle change of the lead screw and then converts it into axial displacement. Its accuracy is far less than 1 wire, and its operation is convenient, which can effectively improve work efficiency.

Description

Portable measuring device for cable thickness measurement

technical field

The utility model relates to the field of measuring devices, in particular to a portable measuring device for cable thickness measurement.

Background technique

The reading methods of the existing portable devices used for cable measurement are all manual reading or using the reading method of vernier calipers for reading. Due to individual differences and the limitations of measuring equipment, the amount of recorded data during the detection process is large and there are many calculation steps. The reading accuracy is difficult to guarantee, and this reading method leads to low detection efficiency.

Contents of the invention

In order to solve the above technical problems, the present invention provides a portable measuring device for cable thickness measurement. The measuring device is small in size. By changing the measurement method and using the screw to calculate the moving distance, the measurement accuracy can be effectively improved, and the digital display is adopted. Overcoming human eye errors, easy to operate, and effectively improving work efficiency.

For this reason, the technical scheme of the utility model is as follows:

A portable measuring device for cable thickness measurement, comprising a base plate, a lead screw fixed on the base plate, a floating knife, an angle sensor, a single-chip computer and a digital display; the lower end of the floating knife is connected to the wire through a screw transmission mechanism connected by a rod; one end of the leading screw is provided with an angle sensor for detecting its angle of rotation; the angle sensor is directly connected with a single-chip microcomputer comprising a digital-to-analog conversion function or is connected with a single-chip microcomputer through a digital-to-analog conversion module; the single-chip microcomputer is connected with the single-chip microcomputer said digital display is connected;

The angle sensor directly transmits the received current or voltage signal comprising the angle of rotation to a single-chip microcomputer comprising a digital-to-analog conversion function or transmits it to a single-chip microcomputer through a digital-to-analog conversion module; the single-chip microcomputer transmits the received signal to a digital display after processing; The digital display will display the received signal in digital form.

The screw transmission mechanism connected with the lead screw of the floating knife is a ball screw nut mechanism.

The single-chip microcomputer model that includes the digital-to-analog conversion function is s12x128, stc series produced by Texas Instruments, MSP430, F41x, F16x, F41x, F43x or F44x; the single-chip microcomputer model that data transmission needs to pass through the digital-to-analog conversion module is Atmel8051 produced by Texas Instruments , 80c51 or 89s51, the model of the analog conversion module connected with the microcontroller is ADC0809 or ADC12 produced for Texas Instruments.

The single-chip microcomputer and digital display are integrated and installed on the surface of the floating knife, which can not only reduce the size of the equipment, but also facilitate observation.

One end of the lead screw setting angle sensor is provided with a control knob, and the control knob rotates coaxially with the lead screw.

The control knob is arranged on the outside of the angle sensor, which effectively reduces the volume of the device and is convenient for operators to carry.

The minimum diameter of the angle sensor is only 30mm, which can effectively reduce the volume of the equipment.

The working principle of the portable measuring device is:

① Rotate the lead screw to adjust the floating knife to a suitable position;

② The angle sensor rotates coaxially with the lead screw to monitor the rotation angle of the lead screw in real time. At the same time, the angle sensor transmits the current/voltage signal carrying the rotation angle directly to the single-chip microcomputer with digital-to-analog conversion function, or through the digital-to-analog conversion module. to the MCU;

There are two steps to process the data by the single-chip microcomputer: first, convert the angle data into the number of cycles: the number of cycles = rotation angle/360;

Secondly, the number of cycles is converted into a straight-line distance: straight-line distance = number of cycles * lead screw pitch;

The single-chip microcomputer can be selected from the following models, and the single-chip microcomputer with similar functions can also be selected: the single-chip microcomputer model including the digital-to-analog conversion function is s12x128, stc series produced by Texas Instruments, MSP430, F41x, F16x, F41x, F43x or F44x; data transmission needs The single-chip microcomputer model of the digital-analog conversion module is Atmel8051, 80c51 or 89s51 produced for Texas Instruments, and the model of the digital-analog conversion module connected with the single-chip microcomputer is ADC0809 or ADC12 produced for Texas Instruments.

③ The distance data processed by the single-chip microcomputer is displayed on the digital display.

The portable measuring device for cable thickness measurement is small in size, uses digital display to overcome human eye errors, and uses an angle sensor to detect the angle change of the lead screw and then converts it into axial displacement. The accuracy is about d/3600 (d<5mm), far less than 1 wire, which greatly improves the detection accuracy, and the device is easy to operate and can effectively improve work efficiency.

Description of drawings

Fig. 1 is a top view of an embodiment of the utility model;

Fig. 2 is a top view of another embodiment of the present invention.

Detailed ways

The structure of the present utility model will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

As shown in Figure 1, a kind of portable measuring device that is used for cable thickness measurement comprises base plate 7, leading screw 1 that is fixed on described base plate 7, swimming knife 6, angle sensor 2, single-chip microcomputer 4 and digital display 5; The lower end of the floating knife 6 is connected to the lead screw 1 through a screw transmission mechanism; one end of the lead screw 1 is provided with an angle sensor 2 for detecting its rotation angle; Single-chip microcomputer 4 is connected or is connected with single-chip microcomputer 4 by digital-to-analog conversion module; Described single-chip microcomputer 4 is connected with described digital display 5;

The angle sensor 2 directly transmits the received electric current or voltage signal containing the angle of rotation to a single-chip microcomputer 4 comprising a digital-to-analog conversion function or transmits to the single-chip microcomputer 4 through a digital-to-analog conversion module; the single-chip microcomputer 4 transmits the received signal to the A digital display 5; the digital display 5 displays the received signal in digital form.

In one embodiment of the portable measuring device, the screw transmission mechanism of the floating knife 6 connected with the lead screw 1 is a ball screw nut mechanism.

In the embodiment of this portable measurement device, the s12x128, stc series produced by Texas Instruments can be selected, MSP430, F41x, F16x, F41x, F43x or F44x are used as the single-chip microcomputer comprising the digital-to-analog conversion function; Atmel8051, 80c51 or 89s51 produced by Texas Instruments are selected for use As a single-chip microcomputer that does not include a digital-to-analog conversion function, ADC0809 or ADC12 produced by Texas Instruments is selected as a digital-to-analog conversion module connected with a single-chip microcomputer that does not include a digital-to-analog conversion function.

The angle sensor of the portable measuring device can be the WDA-D30-SA angle sensor produced by Shanghai Jiang Jingxiang Electronics Co., Ltd., or an angle sensor with similar accuracy/function produced by other manufacturers.

In one embodiment of the portable measuring device, the single-chip microcomputer 4 and the digital display 5 are integrated and installed on the surface of the floating knife, which can not only reduce the size of the equipment, but also facilitate observation.

The minimum diameter of the angle sensor is only 30mm, which can effectively reduce the volume of the equipment.

In one embodiment of the portable measuring device, a control knob 3 is provided at one end of the angle sensor on the lead screw, and the control knob 3 rotates coaxially with the lead screw 1 .

As shown in Fig. 2, in one embodiment of the device, the control knob 3 is arranged outside the angle sensor 2, which effectively reduces the volume of the device and is convenient for operators to carry.

The working principle of the portable measuring device is:

① Fix the sample to be tested on the sample stage 8;

② Rotate the screw 1 to adjust the floating knife 6 to a suitable position;

③ The angle sensor 2 rotates coaxially with the lead screw 1 to monitor the rotation angle of the lead screw in real time. At the same time, the angle sensor 2 directly transmits the current/voltage signal carrying the rotation angle to the single-chip microcomputer 4 including the digital-to-analog conversion function, or through the digital The analog conversion module is transmitted to the single-chip microcomputer 4;

Single-chip microcomputer 4 processes data in two steps: first, the angle data is converted into cycle number: cycle number=rotation angle/360;

Secondly, the number of cycles is converted into a straight-line distance: straight-line distance = number of cycles * lead screw pitch;

④ The distance data processed by the single-chip microcomputer 4 is displayed on the digital display 5 .

Claims (6)

1. a portable measuring device for cable thickness measurement, comprising a base plate (7), a leading screw (1) fixed on the base plate (7), a swimming knife (6), an angle sensor (2), a single-chip microcomputer ( 4) and a digital display (5); it is characterized in that: the lower end of the floating knife (6) is connected to the lead screw (1) through a screw transmission mechanism; one end of the lead screw (1) is provided for detecting its An angle sensor (2) of the angle of rotation; the angle sensor (2) is directly connected with a single-chip microcomputer (4) comprising a digital-to-analog conversion function or is connected with the single-chip microcomputer (4) through a digital-to-analog conversion module; the single-chip microcomputer (4) be connected with the digital display (5); The angle sensor (2) directly transmits the received current or voltage signal containing the angle of rotation to a single-chip microcomputer (4) comprising a digital-to-analog conversion function or transmits it to the single-chip microcomputer through a digital-to-analog conversion module; the single-chip microcomputer processes the received signal The digital display (5) is transmitted to the digital display (5); the digital display (5) displays the received signal in digital form. 2. The portable measuring device according to claim 1, characterized in that: the screw transmission mechanism of the floating knife (6) connected with the screw (1) is a ball screw nut mechanism. 3. The portable measuring device as claimed in claim 1, characterized in that: the single-chip microcomputer model comprising digital-to-analog conversion function is s12x128, stc series produced by Texas Instruments, MSP430, F41x, F16x, F41x, F43x or F44x; The model of the single-chip microcomputer that needs to pass through the digital-to-analog conversion module is Atmel8051, 80c51 or 89s51 produced by Texas Instruments, and the model of the digital-to-analog conversion module connected with the single-chip computer is ADC0809 or ADC12 produced by Texas Instruments. 4. The portable measuring device according to claim 1, characterized in that: the single-chip microcomputer (4) and the digital display (5) are integrally installed on the surface of the floating knife (6). 5. The portable measuring device as claimed in claim 1, characterized in that: one end of the lead screw (1) provided with an angle sensor (2) is provided with a control knob (3), and the control knob (3) is connected to the lead screw ( 1) Coaxial rotation. 6. The portable measuring device according to claim 5, characterized in that: the control knob (3) is arranged outside the angle sensor (2).