vibrating touch screen

vibrating touch screen enables braille reading - cnet

Touch-screen handsets may be the talk of the town, but they are useless to the visually impaired. A new software developed by Jussi Rantala and his colleagues at the University of Tampere in Finland attempts to address that by bringing Braille to touch-enabled mobile devices.

The team installed a software on the Nokia 770 Internet Tablet with a piezoelectric layer that "displays" a raised dot on the touch screen with a single intense vibration and an absent one with a longer and weaker pulse.

The second method generated a sequence of six dots, each 360 milliseconds apart, when the user taps and holds on the character. It turned out the volunteers were more comfortable with the latter option, though not without some learning and getting used to.

While the experiment is new, the technology isn't. What Rantala and team are doing is essentially taking what is currently available (devices with piezoelectric layers) and introducing new applications to it. In this case, it shouldn't be too long before reading Braille on touch-screen devices becomes mainstream.

finite element modeling of a vibrating touch screen actuated by piezo patches for haptic feedback | springerlink

The aim of our work is to design a touch screen for displaying vibrotactile haptic feedback to the user via piezo patches attached to its surface. One of the challenges in the design is the selection of appropriate boundary conditions and the piezo configurations (location and orientation) on the screen for achieving optimum performance within the limits of human haptic perception. To investigate the trade-offs in our design, we developed a finite element model of the screen and four piezo actuators attached to its surface in ABAQUS. The model utilizes the well-known Hookes law between stress and strain extended by piezoelectric coupling. After selecting the appropriate boundary condition for the screen based on the range of vibration frequencies detectable by a human finger, the optimum configuration for the piezo patches is determined by maximizing the vibration amplitude of the screen for a unit micro Coulomb charge applied to each piezo patch. The results of our study suggest that the piezo patches should be placed close to the clamped sides of the screen where the boundary conditions are applied.

what to do if my phone screen is flickering or shaking

The phone screen flickering phenomenon on your smartphone is not a very cool experience. For people with sensitive eyesight, it can disturb them and cause eye problems. Having a working display is pretty much linked to the proper use of your smartphone, which is why we are going to show you what to do if your phone screen is flickering or shaking.

Software issues causing flickering in your smartphone is usually as a result of an app needing a higher resolution than what your phones GPU can provide. Usually, your smartphones Graphics Processing Unit is the component of your smartphone that processes and renders images on your phone.

But there are times that some apps or videos might need a higher resolution, and this is where the problems arise. In times when apps or videos need to be rendered with a higher resolution than what your GPU can provide, the rendering is usually done via an encoder from your Central Processing Unit. Mobile screen flickering then happens when your phone oscillates between using the GPU and the CPU encoder.

Hardware issues with your smartphone that can cause phone screen flickering usually have to do with the LCD panel itself. There could be a faulty connection with the LCD panel itself, or the screen connector could be faulty.

During a video call, the quality of the video is usually dependent on the signal strength of the network. A strong network will mean a near seamless transmission, and both audio and voice capabilities will be fully engaged.

This is the reverse with a bad network. Remember, graphics are rendered via your phone's GPU. With a bad network, the graphics aren't exactly 'flowing' for your GPU to accurately render them, and this constant breakage is what causes flickering. The only antidote to this problem is to get connected to a faster network.

Doing this can help refresh your phone's components, especially if the phone is flickering not so seriously. Sometimes, your phone's processor might have too much to do and transmit to the GPU, and that can also cause phone screen flashing.

Clearing your phone's cache can also help to stop the phone screen flickering or blinking. Just like an app cache, your phone's system cache is a storage of data that your phone needs to boot up and work properly.

If data associated with your phone's GPU is corrupted or isn't being processed properly, flickering will occur. In this case, clearing the cache will solve the problem.To clear the cache of your phone, follow the following steps;

Booting your smartphone in safe mode is also another option to try and stop phone screen flickering or shaking problem. Take note, booting in safe mode won't help 'cure' the flickering. It is just to help you find out if the screen still flickers or not. If it doesn't, then it means the flickering is caused by a software glitch.

In the course of using your phone, if your phone screen is flickering or shaking, then it's very possible that it's that application causing the glitching.Uninstall the application and check your screen's performance afterward. If it doesn't flicker, the application was responsible for the shaking. If it does, check out our other fixes.

The flickering of your phone's screen might also be caused by unexpected bugs in your phone's brightness settings. The usual culprit is the auto-brightness setting.Normally, the setting is used to automatically alter the screen's brightness based on data from the screen's light sensors.

But sometimes, there might be a hardware issue or a software glitch resulting from either a recent update or the software being out of date. Either of this will cause flickering and shaking for your screen.

If the phone screen flickering or glitching persists after you've tried all the previous fixes, then it's likely to be a hardware issue that can only be resolved by professionals.Find out about a service center close to you and take your device there. For Infinix, Itel and Tecno users, you can find the nearest Carcare center close to you.

vibration frequency, screen inclination of the vibrating screen | lzzg

Vibration characteristics include vibration frequency, amplitude, vibration direction angle, and screen inclination. If these parameters are set incorrectly, it will affect the working efficiency of the vibrating screen. The correct way is: 1. Screen angle The angle between the screen surface and the horizontal plane is called the screen angle. The size of the dip is closely related to the throughput of the screening equipment and the screening efficiency. When the inclination angle is increased, the throwing strength of the material on the sieve will be increased, so that the forward movement speed of the material on the sieve surface is accelerated, so that the treatment amount of the vibrating screen is increased, but the residence time of the material on the sieve surface is shortened, and the opportunity for screening the sieve is reduced. , thereby reducing the screening efficiency. On the contrary, the throughput is reduced and the screening efficiency is improved. In order to control the screening efficiency of the vibrating screen to a relatively ideal range, the screen inclination angle of the circular vibrating screen is generally between 15-25, and the screen inclination angle of the linear vibrating screen is between 0 and 8. 2. The angle between the vibration direction angle vibration direction line and the upper screen surface is called the vibration direction angle. The larger the value of the vibration direction angle is, the shorter the distance moved by the material is, and the slower the movement speed of the material on the screen surface, the material can be fully sieved, thereby obtaining a larger screening efficiency. The smaller the value of the vibration direction angle is, the farther the material throws and advances each time. The faster the material passes through the screen surface, the higher the processing capacity, but the material cannot be fully sieved. Therefore, the vibration direction angle should be reasonably selected. For difficult-to-screen materials, the vibration direction angle should be taken as a large value. For easy-screen materials, the vibration direction angle should be small; in general, the vibration direction angle of the circular vibrating screen is 90. The vibrating direction angle of the linear vibrating screen ranges from 30 to 60, often 45. This value not only has good performance for various screening but also obtains the best moving speed and high productivity. circular vibrating screen 3. The amplitude A amplitude increases, the mesh plugging phenomenon will be greatly reduced, and it is also conducive to the stratification of materials. However, too large amplitude is also destructive to the device. The choice of amplitude is based on the particle size and nature of the material being screened. In general, the larger the vibrating screen size, the larger the amplitude selected. When the linear vibrating screen is used for classification, the amplitude is slightly larger; when used for dehydration and deliming, the amplitude should be smaller. When the particle size of the treated material is large, the amplitude should be correspondingly increased; when the particle size of the treated material is small, the amplitude should be smaller. Usually, the amplitude of the linear vibrating screen is A=3.5~6mm. 4. The increase of vibration frequency vibration frequency can increase the number of times the material beats on the screen surface, which increases the probability of material permeability. This is helpful for speeding up the material screening speed and improving the screening efficiency, but it is too high. Reduce the life of your equipment. For larger particle sizes, use larger amplitudes and lower frequencies; for finer particles, use smaller amplitudes and higher frequencies.

Vibration characteristics include vibration frequency, amplitude, vibration direction angle, and screen inclination. If these parameters are set incorrectly, it will affect the working efficiency of the vibrating screen. The correct way is:

1. Screen angle The angle between the screen surface and the horizontal plane is called the screen angle. The size of the dip is closely related to the throughput of the screening equipment and the screening efficiency. When the inclination angle is increased, the throwing strength of the material on the sieve will be increased, so that the forward movement speed of the material on the sieve surface is accelerated, so that the treatment amount of the vibrating screen is increased, but the residence time of the material on the sieve surface is shortened, and the opportunity for screening the sieve is reduced. , thereby reducing the screening efficiency. On the contrary, the throughput is reduced and the screening efficiency is improved. In order to control the screening efficiency of the vibrating screen to a relatively ideal range, the screen inclination angle of the circular vibrating screen is generally between 15-25, and the screen inclination angle of the linear vibrating screen is between 0 and 8.

2. The angle between the vibration direction angle vibration direction line and the upper screen surface is called the vibration direction angle. The larger the value of the vibration direction angle is, the shorter the distance moved by the material is, and the slower the movement speed of the material on the screen surface, the material can be fully sieved, thereby obtaining a larger screening efficiency. The smaller the value of the vibration direction angle is, the farther the material throws and advances each time. The faster the material passes through the screen surface, the higher the processing capacity, but the material cannot be fully sieved. Therefore, the vibration direction angle should be reasonably selected. For difficult-to-screen materials, the vibration direction angle should be taken as a large value. For easy-screen materials, the vibration direction angle should be small; in general, the vibration direction angle of the circular vibrating screen is 90. The vibrating direction angle of the linear vibrating screen ranges from 30 to 60, often 45. This value not only has good performance for various screening but also obtains the best moving speed and high productivity.

3. The amplitude A amplitude increases, the mesh plugging phenomenon will be greatly reduced, and it is also conducive to the stratification of materials. However, too large amplitude is also destructive to the device. The choice of amplitude is based on the particle size and nature of the material being screened. In general, the larger the vibrating screen size, the larger the amplitude selected. When the linear vibrating screen is used for classification, the amplitude is slightly larger; when used for dehydration and deliming, the amplitude should be smaller. When the particle size of the treated material is large, the amplitude should be correspondingly increased; when the particle size of the treated material is small, the amplitude should be smaller. Usually, the amplitude of the linear vibrating screen is A=3.5~6mm.

4. The increase of vibration frequency vibration frequency can increase the number of times the material beats on the screen surface, which increases the probability of material permeability. This is helpful for speeding up the material screening speed and improving the screening efficiency, but it is too high. Reduce the life of your equipment. For larger particle sizes, use larger amplitudes and lower frequencies; for finer particles, use smaller amplitudes and higher frequencies.

The excitation force, vibration frequency and screening effect of the dewatering screen are closely related. Too small excitation force will cause poor screening effect, and excessive excitation force may cause damage to the screen plate.How to adjust the vibrating screen. 1. Control of screening area The width of the screen surface is the main factor that determines the production rate

Silica sand is the main raw material for making ceramics and glass, so the market demand has been high. It is mainly processed by crushing, powdering, and iron removal. Fine silica sand removal methods instruction. The mechanical equipment required in the silica sand dry iron removal method is a crusher, a dry ball mill, a dry iron remover, a dry

Drum rotating aggregate screening machine also called trommel screen according to its structure. It uses the self-weight of sand and gravel aggregates and the isolation effect of the mesh to separate sand and gravel materials of different sizes. The inclination of the central axis is 22.5 degrees. It can discharge l530m3 per hour. When the screen is moved, it is

After the raw sand is mined, the finished sand is obtained after washing rod milling, classification, homogenization, and dehydration. The raw sand with particles below 10mm from the raw ore mining is conveyed into the rod mill through a belt. At the same time, add water according to a certain proportion and grind it into mortar and drain into the

fundawear - vibrating touch underwear | wearable x

Fundawear takes touch input from one partner via their touch screensmartphone and sends these signals across the Internet via a special real-time server to theirpartners touch screen device. From here it is transferred to the Fundawear garment where the touch sensation is recreated on the skin. This all happens in a split second so the experience is verynatural.

"You put on special (read: vibrating) underwear that connect to a smartphone app. You can control the vibrations yourself with a smartphone as a remote, or pair the panties with your partners smartphone, so they can control the fun."

"Fundaware uses tiny vibrating actuators similar to those that give your finger that buzzing "haptic feedback" on smartphones. The intensity of Fundawear's vibrations correspond to the movements of the person's finger touching the smartphone screen from afar."

Wearable X believes in designing technology for the things that make us truly human. Intimacy, Exploration, Entertainment and Self Awareness. Learn your body through vibrations.Shop our latest product!

Wearable X is the future of wellness that brings together design and technology to create a better quality of life through experience and fashion. PRIVACY POLICY | TERMS OF USE | MEDIA KIT | FAQs | User Manual | CONTACT US: [email protected] | 174 WEST 4TH ST, NYC

PRIVACY POLICY | TERMS OF USE | MEDIA KIT | FAQs | User Manual | CONTACT US: [email protected] | 174 WEST 4TH ST, NYC

PRIVACY POLICY | TERMS OF USE | MEDIA KIT | FAQs | User Manual | CONTACT US: [email protected] | 174 WEST 4TH ST, NYC

evaluating fitts law on vibrating touch-screen to improve visual data accessibility for blind users - sciencedirect

Reviews the literature on Fitts Law and visual data accessibility solutions for blind users.Studies the ability of blind users to point to shapes on a vibrating touch-screen (VTS).Varies different pointing task parameters: target distance, target size, and angle of attack.Fitts Law can be applied for blind users using a VTS when varying target distance and target size.Fitts Law is not verified for blind users using a VTS when varying the angle of attack.

The pointing task is the process of pointing to an object on a computer monitor using a pointing device, or physically touching an object with the hand or finger. It is an important element for users when manipulating visual computer interfaces such as traditional screens and touch-screens. In this context, Fitts Law remains one of the central studies that have mathematically modeled the pointing method, and was found to be a good predictor of the average time needed to perform a pointing task. Yet, in our modern computerized society, accessing visual information becomes a central need for all kinds of users, namely users who are blind or visually impaired. Hence, the goal of our study is to evaluate whether Fitts Law can be applied for blind candidates using the vibration modality on a touch-screen. To achieve this, we first review the literature on Fitts Law and visual data accessibility solutions for blind users. Then, we introduce an experimental framework titled FittsEVAL studying the ability of blind users to tap specific shapes on a touch-screen, while varying different parameters, namely: target distance, target size, and the angle of attack of the pointing task. Experiments on blindfolded and blind candidates show that Fitts Law can be effectively applied for blind users using a vibrating touch-screen under certain parameters (i.e., when varying target distance and size), while it is not verified under others (i.e., when varying the angle of attack). This can be considered as a first step toward a more complete experimental evaluation of vibrating touch-screen accessibility, toward designing more adapted interfaces for the blind.