RU2389060C2 - Device for measuring and recording object displacement - Google Patents

Abstract

FIELD: information technology.

SUBSTANCE: device has a personal computer comprising a system block, display, keyboard and mouse, an object whose displacement is being measured and recorded, and software. The device also has a unit for setting up unit displacement of the object on the entire screen of the said display or part thereof. The device employs an optical mouse which is stationary. The "belly" moving under and synchronously with the object and having a mark is pivotally joined to the said object. The software sets operation of the said display and optical mouse, as well as the device as a whole.

EFFECT: easier use of the device.

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Description

The present invention relates to the field of sports, medicine and pedagogy, as well as to game simulators and can be used in computerized control and regulation systems.

Known electrogoniometer [1], designed to measure the movement of an object, built on the basis of a miniature potentiometer. It contains a hinge consisting of two parts, fastened to each other by an axis, on one part of which a bracket is mounted vertically with a miniature potentiometer fixed horizontally with a nut with circular movement of its engine, on the axis of which a pulley with a groove is mounted on its outer surface, and on the other part of the hinge, a bracket is mounted vertically with a vertical row of holes to which the first ends of inextensible and tensile elastic threads are wound, wound on the pulley in opposite directions and behind replennyh it second ends. The wires are soldered to the terminals of the potentiometer, with the help of which this potentiometer is connected to an analog-to-digital converter (ADC) and a stabilized power source.

The disadvantages of the electrogoniometer include the following.

1. The limited measuring capabilities of this device.

2. The requirement for alignment of both parts of the hinge.

3. The need for an ADC and a stabilized power supply for connecting to a personal computer.

The prior art also knows a device for measuring and recording on a personal computer a slowly varying positive voltage ranging from 1 to 10 volts with an accuracy of ± 2.5%, using the functions and interface of a standard mouse-type manipulator by replacing a double mouse in the circuit diode [2].

The operation of the device is based on the voltage-frequency conversion. To explain the principle of operation of the device, we will consider how the “mouse” itself works. When the “mouse” moves, the ball rotates, which mechanically transfers the rotation to the wheels with slots located between the photo-LEDs on the “mouse” board. The presence of slots in the opaque wheels allows the rotation to modulate the illumination of the photodiode with the light flux from the corresponding LED according to the “light-shadow” principle, which leads to a periodic change in the resistance of each of the two photocells included in the dual photodiode. Here, the presence of a time offset of the signals in both channels, i.e. implemented phase shift. In the absence of a phase shift, the mouse circuit cannot select the direction of cursor movement on the display screen.

Thus, the cursor is moved along each of the coordinates with the "mouse" based on the following information:

- the phase shift of the current pulses flowing through the photocells of the dual photodiode determines the direction of movement (for example, to the right or left);

- number of pulses - cursor path length;

- period of pulses - the length of the cursor path.

Replace one of the dual photodiodes with a measuring element, but in such a way that the “mouse” does not “guess” about it, i.e. the measuring element should imitate the operation of the replaced photodiode as accurately as possible. The parameters of the measuring circuit were chosen precisely from these considerations.

Advantages are obvious.

The disadvantages of this device include the following.

1. The need to penetrate into a foreign product in order to implant, integrate your own measuring element into it.

2. The software of the mouse and the personal computer itself is changing.

3. Outdated mouse design.

The objective of the present invention is the creation of technical and the use of standard computing tools for measuring and recording the movement of an object or part thereof.

The task in the "Device for measuring and recording the movement of an object" containing a personal computer, which includes a system unit, a display, a keyboard and a mouse, an object whose movement is measured and recorded, and the software of a personal computer, is solved by it was additionally introduced a unit for setting the unit to move the object to the entire display screen, and it uses an optical “mouse” mounted stationary, and a “rug” with marking moving synchronously with the object under its “belly” pivotally connected to the specified object, and the software sets the operation of the aforementioned display and optical "mouse", as well as the device as a whole.

Distinctive features of the proposed technical solution is the following:

- firstly, an adjustment unit for unit moving an object to the entire screen or part of it is additionally introduced into the device;

- secondly, the optical “mouse” is fixedly mounted, and the “mat” with marking moving synchronously with the object under its “belly” is pivotally connected to the object;

- thirdly, the software sets the display and the optical mouse, as well as the device as a whole.

In the inventive device, the distinctive features exhibit properties known in other fields of science and technology, and taken in conjunction with the features of the prototype exhibit properties that allow you to create technical and use computing tools to measure and record the movement of an object or part of it with relatively inaccurate means - "mouse" with sufficient accuracy, which indicates the conformity of the claimed technical solution to the criterion of "significant differences".

The inventive device explain the schematic drawings.

Figure 1 shows the device as a whole: front view and top view.

In Fig.2 shows a "mat" docked with a lever, in two projections - front and top.

The device includes a measuring tool and a personal computer (figure 1). The measuring tool contains a frame made of two pipes 1 and 2 bent along an arc, fastened with two screws 3, 4 and an axis 5, on which the lever 6. is mounted. The lever 6 performs reciprocating movements (unit movement of the object), which limits and defines the node settings for a single movement of the object (lever 6), consisting of a base 7, fixed at two points with screws 3, 4 with nuts, and in which there are limit screws 8, 9, threaded holes in the base 7, into which the limit screws 8 are screwed , 9 and fixed with locknuts 10, 11. At the ends of the restrictive screws 8, 9, rubber support heads 12, 13 made of hard rubber are supplied. In addition, on the lever 6, a hinge 16 is attached using a clamp 14 with a lock 15, connecting the clamp 14 with a “rug” 17, which moves between the two guides 18 and 19 under the “belly” of the optical “mouse” 20, which is fixed motionless on the table 21. The optical "mouse" 20 is part of a personal computer 22 (outlined by a dashed line), which includes a system unit 23, a display 24 and a keyboard 25.

The software recorded on a diskette or disk is inserted into the corresponding slot 26 or 27 of the system unit 23 of the personal computer 22 and is initiated using the keyboard 25.

Work with the device as follows.

It is important to determine how to make relatively accurate measurements with relatively inaccurate measuring tools. This can be done by selecting coarse measurements, and in each coarse measurement make more accurate measurements. So, if we single out the unit displacement of an object (lever), restricting its displacement (rough measurement), and count these displacements of the object, and inside each unit displacement with the help of an optical “mouse” make accurate positioning of the display cursor, it’s possible to obtain accurate measurement with relatively inaccurate measuring tools.

Before starting the measurements, the research engineer checks the operability of the device: it adjusts the displacement sensor (lever 6), the area of its limitation and the possibility of positioning the display cursor using the optical "mouse". Having also made sure that the device as a whole and its individual components, that is, the software, are functioning correctly, you can begin experiments by moving the lever 6.

Moving the lever 6, which is the object of measurement, reciprocatingly to the support heads 12, 13 located on the restrictive screws 8, 9, simultaneously move the clamp 14, mounted on the lever 6 using the lock 15. With the clamp 14 is connected a leash 28 and using a hinge 16 it is connected to the “mat” 17, which synchronously moves under the “belly” of the optical “mouse” 20, fixed motionless on a table 21 mounted on a frame formed by two bent pipes 1, 2. The optical “mouse” 20 is part of a personal computer 22, including e system unit 23, the display 24 and the keyboard 25. On the display 24 observe the movement of the cursor on its screen and determine the quantitative characteristics.

Having counted the number of unit movements and clarifying the result of cursor positioning (since some instability is possible, although the restrictive heads are made of hard rubber) within each unit movement, the result of the object’s movement as a whole is obtained.

In the claimed device, along with the standard ones, there are non-standard nodes, for example, standard computing tools and their interfaces (personal computer) are used. Consider the main non-standard nodes, paying attention to their design.

The movable "mat" 17 and its connection with the lever 6. One of the possible designs shown in figure 2. It contains: a "mat" 17, a hinge 16, a clamp 14 with a lock 15, a tightening leash 28 on the lever 6. "Mat" 17, as shown in figure 2, is made of two layers. The bottom layer 29 is the rigid but elastic basis of the “rug” 17, and the upper layer serves to apply hatching 31. In principle, the “rug” 17 can be single-layer, and hatching 31 can be applied mechanically or electrochemically. The hinge 16 connects the “rug” 17 to the leash 28 and is fastened with screws 32, 33 to the “rug” 17, and with screws 34, 35 - to the leash 28. In addition, the “rug” 17 is not wider than the width of the optical “mouse”, and in length - equal to the maximum length of the object.

The operation of the device and its component parts is described above.

A feature of the device is that the "mat" 17 is made not wider than the width of the optical "mouse" and equal in length to the maximum length of the object (lever 6), and the cursor position on the display screen corresponds to the middle of the screen horizontally and it moves when moving object across the screen or part of it from the bottom up. In the software, however, the recount of the number of unit movements of the cursor on the screen should be laid down, according to which the number of movements of the object is judged, and the numbers of this movement should be displayed on the display screen. If it is required to determine the displacement of an object point other than the fastening of the clamp 14, then this should be reflected in the software.

Compared with the prototype, the proposed device has a new quality that allows you to create technical means and use standard computing tools to measure and record the movement of an object or part of it with relatively inaccurate means - an optical "mouse" with sufficient accuracy and register all movement.

Bibliography

1. RF patent No. 2234728 With 2 IPC G66F 17/00, G06F 159: 00, 3/03. A method of forming correction of motor plastics and a device for its implementation.

2. Klimov A. Science and mouse // Computra: Computer weekly. - 1999. - No. 7 (285). - S. 34-35.

Claims (4)

1. A device for measuring and recording the movement of an object or part thereof, comprising a personal computer with software for operating the units included in the computer: a system unit, a display, a keyboard and an optical mouse, characterized in that the device also contains a unit for setting up a single object movement on the entire screen of the display or part thereof, with the help of which the area of the object’s movement is limited and the cursor is positioned on the display screen by means of this unit and an optical mouse, while an optical mouse l set up motionlessly and place a mat under it associated with the object, the movement of which is measured and recorded, and computer software is also designed to recalculate the number of unit movements of the cursor on the screen, which judge the number of movements of the object associated with the mat and moving synchronously with it . 2. The device according to claim 1, characterized in that the mat is made on a rigid and flexible base, the width of which is not greater than the width of the optical mouse, and the length is equal to the maximum length of the object, and markings are applied on the surface of the mat. 3. The device according to claim 1, characterized in that in it the position of the cursor on the display screen corresponds to the middle of the screen horizontally and when the object moves, move it around the entire screen or part of it from the bottom up. 4. The device according to claim 1, characterized in that the software is designed to display a digital value of the movement of the object on the display screen.

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