Optical mouse working principle pdf

Moving the mouse causes the ball to roll, and sensors inside the mouse detect the movement of the ball and consequently send signals to the cursor on the screen. The working of optical mouse depends upon some electronics device embedded inside it. The pcb has switches and traces allowing all possible modes of communication and operation, though the seeingeye mouse chip can actually be effectively used with no external components. An optical mouse uses an led installed at its bottom to move the cursor around on the screen. The development of semiconductors in the 1940s and 50s led to lowercost, compact and efficient lightsensing devices. As the wheel spins these lights represent an xaxis or yaxis for the mouse pointer on your screen. Pdf 2d position measurement with optical laser mouse sensor. The heart of an optical scanner is a charge coupled device ccd, the same light sensor system used in digital cameras and camcorders. One of the wheels detects movements in an upanddown direction like the yaxis on graphchart paper. Working of optical mouse now, almost everyone tries to switch from ballroller mouse to optical mouse. When light strikes the sensor, it trips the trigger, so a measurement is taken.

Thus, optical mouse used camera technology and digital processing to compare and track. Organometallic compounds are usually employed with either fluorescence or electrogenerated chemiluminescence sensing and the typical format exploits optical fiber or planar. Working principle of the optical mouse the basic working principle of an optical mouse is described in fig. Highprecision robot odometry using an array of optical mice.

One of those wheels detects sidetoside movement xaxis wheel and the other yaxis wheel detects movement in the upanddown direction. In principle, an optical mouse works almost same a mechanical mouse, but the working is entirely different. Optical mouse working principle linkedin slideshare. Weve got some clickworthy advice on buying mice for work or. The optical mouse does not have any movable parts as of the ball mouse. Cass, in comprehensive organometallic chemistry iii, 2007. Since the ball is absent in the optical mouse, the weight. Navigate with better speed, accuracy, and reliability. These differing technologies are identified by examining the bottom of the mouse. This article explains laser optical mouse sens or principle and presents measurements on sensor adns6010, especially precision, speed and reliability. The output voltage varies with the location x of the reflected light spot, which depends on the detected object distance as well as the. Overall, the optical mouse has been found to be a viable twodimensional displacement sensor.

The optical mouse works in a very different way as compared to the ball mouse. The optical mouse is a computer mouse first introduced by microsoft on april 19, 1999, that utilizes leds lightemitting diodes or a laser to track movement. Modern surfaceindependent optical mice work by using an optical sensor to take successive pictures of the surface the mouse is operating on. Optical sensors based upon luminescence often offer very high limits of detection combined with versatile sensing formats. Most of these mice use leds to illuminate the surface that is being tracked. A ccd is simply an array of lightsensitive diodes called photosites, which generate an electrical signal in response to light photons. Optical sensors work by converting light into an electronic signal. Optical mouse seminar report, ppt, pdf for ece students. Variations of the optical mouse have largely replaced the older mechanical mouse design, which uses moving parts to sense motion the earliest optical mice detected movement on preprinted. General description this optical cmos sensor provides a nonmechanical tracking engine for implementing a computer mouse. Optical mouse works on the principle of image processing techniques while air mouse works on the principle of inertial motion sensing. Microsoft basic optical mouse microsoft accessories. The mechanical mouse has largely been replaced by the. Each wheel contains a circle of holes or notches, allowing an led light to shine through and be detected by a sensor.

Mouse dissectionetc stereomicroscope long working distance low magnification observation with stereo perception. Optical mouse working principle pdf one of the earliest optical mouse designs started with the. Optical mouse led diode pdf optical mouse led diode pdf optical mouse led diode pdf download. Developed by agilent technologies and introduced to the world in late 1999, the optical mouse actually uses a tiny camera to take 1,500 pictures every second. The sensor is attached to a measuring instrument and an electrical trigger. Basic principle of light microscope the incident angle is magnified by lens very small. Time to ditch that old pc mouse, or move beyond your laptops touchpad. Introduction a mouse is a pointing device used with interactive displayoriented computer systems, which tracks the movement of a users hand as the user pushes the mouse about on a pad usually on the. Optical mouse was developed by agilent technologies and introduced in late 1999. As you can see in the picture, the optical mechanical mouse has a ball, and the optical mouse has a light instead. Since the mouse works with the sensor recognition, the movements are clearly captured and so the moves gives out a same function in all moves. This paper synthesizes these threads of research to create a system based on a set of optical mice which can be used for robust and precise robot navigation. Also explore the seminar topics paper on optical mouse with abstract or synopsis, documentation on advantages and disadvantages, base paper presentation slides for ieee final year electronics and telecommunication engineering or ece students for the year 2015 2016.

Based on an interferometric principle, the ap2540a series achieve a 0. Optical sensor this specification may change without further notice. The optical mouse as a twodimensional displacement sensor. For decades, optical sensors have been finding their way into an increasing number of applications. To connect this optical mouse, the necessity is ps2 or usb plug, and windows, macintosh or linux operating system installed in the computer. An optical mouse is a computer mouse which uses a light source, typically a lightemitting diode led, and a light detector, such as an array of photodiodes, to detect movement relative to a surface. Ambidextrous design makes it comfortable either way. A single light emitting diode led illuminates the surface at an angle. The laser mouse operating principle is basically the same as an ledbased. It actually uses a tiny camera to take 1,500 pictures every second. A mechanical mouse is a computer hardware input device comprised of a metal or rubber ball in its underside.

As the cost of the mouse is also being decreasing, the replacement is quiet quicker. Here is a picture of a mouse this one is usb plugged into a usbps2 adapter, and plugged into a working prototype of the seeingeye mouse. As you move it across your desk, the ball rolls under its own weight and pushes against two plastic rollers linked to thin wheels numbered 6 and 7 in the photo. Optical mice developed by agilent technologies and introduced to the world in late 1999, the optical mouse actually uses a tiny camera to take thousands of pictures every second. Led optical mice are often mislabeled as laser mice, probably due to the red led which is used in almost all optical mice, though lasers are becoming more common, as. Many integrated optical sensors can be directly connected to embedded systems. This mouse doesnt have mouse ball and electromechanical. The second led lights up a red plastic strip along the back of the mouse so you can see its working. Each photosite records a pixel, a tiny dot representing the light that hit that spot.

An optical mouse is an computer pointing device that uses a lightemitting diode an optical sensor, and digital signal processing dsp. In this work, the optical mouse has been investigated to determine its suitability. The optical mouse, and an architectural methodology for smart digital sensors 1. Optical mouse working principle anas ibrahim,moeen ghafoor gik institue dec 12,2014 2. The name optical mouse comes from the ability of the mouse to act as a highspeed camera and image processor. Move through your documents quickly without having to use the onscreen scroll bar. Explore optical mouse with free download of seminar report and ppt in pdf and doc format.

Its efficacy was demonstrated in measuring the viscoelastic elongation of polyethylene. Conditions for mouse use based on the research discussed above, there are several constraints which inform the use of optical mice as planar 3dof position sensors. Able to work on almost any surface, the mouse has a small, red lightemitting diode led that bounces light off that surface onto a complementary metaloxide semiconductor cmos sensor. So, the life of the optical mouse is long compared to the ordinary mouse. Alternatively referred to as the ball mouse, the optical mechanical or optomechanical mouse consists of a ball that rolls one of two wheels inside the mouse. Sensors and actuators a 107 2003 2125 the optical mouse as a twodimensional displacement sensor t. Basic optical mouse device downloads microsoft accessories. It does not allow dirt to get inside the mouse and interfere the tracking sensors. When you move a mechanical mouse, the ball rolls beneath it, pushing the two plastic wheelsrollers linked to it in the process. A lens is used to image the surface of the mouse pad onto a cmos sensor located in.