Vibration feeds the sensor. Free Technical Library News

NEWS OF SCIENCE AND TECHNOLOGY, NOVELTY IN ELECTRONICS
Free technical library / timeline

Vibration feeds the sensor

20.08.2006

Scientists from the USA have made a hydrogen sensor that receives energy from vibration.

Hydrogen is highly explosive, but it has no color or odor. Therefore, it is possible to detect its leakage only with the help of sensors, the need for which will increase with the development of hydrogen energy. And then the problem of batteries for these sensors will arise: it is very tedious to change them from time to time in dozens of devices.

"We have been able to create a sensor that works without batteries," says Associate Professor Lin Yongshan from the University of Florida. The sensitive element of the sensor is made of nanowires - zinc oxide whiskers, through which an extremely small electric current flows. The conductivity of these wires is the higher, the more hydrogen is in the ambient air.

The microcontroller converts the information about the conductivity of the whiskers into gas concentration data and sends a radio signal to the central processor of the system. And he is already monitoring the situation. The energy source for the sensor is a piezocrystal, which converts into electricity the vibration of the mechanism on the surface of which the sensor is glued, for example, a pump or engine part.

Tests have shown that the sensor is very sensitive, it is able to detect even 10 hydrogen molecules among a million air molecules, and transmits information over a distance of 20 meters.

<< Back: 30V HEXFET MOSFETs 21.08.2006

>> Forward: The sad fate of robots 19.08.2006

Latest news of science and technology, new electronics:

The existence of an entropy rule for quantum entanglement has been proven 09.05.2024

Quantum mechanics continues to amaze us with its mysterious phenomena and unexpected discoveries. Recently, Bartosz Regula from the RIKEN Center for Quantum Computing and Ludovico Lamy from the University of Amsterdam presented a new discovery that concerns quantum entanglement and its relation to entropy. Quantum entanglement plays an important role in modern quantum information science and technology. However, the complexity of its structure makes understanding and managing it challenging. Regulus and Lamy's discovery shows that quantum entanglement follows an entropy rule similar to that for classical systems. This discovery opens new perspectives in the field of quantum information science and technology, deepening our understanding of quantum entanglement and its connection to thermodynamics. The results of the study indicate the possibility of reversibility of entanglement transformations, which could greatly simplify their use in various quantum technologies. Opening a new rule ... >>

Mini air conditioner Sony Reon Pocket 5 09.05.2024

Summer is a time for relaxation and travel, but often the heat can turn this time into an unbearable torment. Meet a new product from Sony - the Reon Pocket 5 mini-air conditioner, which promises to make summer more comfortable for its users. Sony has introduced a unique device - the Reon Pocket 5 mini-conditioner, which provides body cooling on hot days. With it, users can enjoy coolness anytime, anywhere by simply wearing it around their neck. This mini air conditioner is equipped with automatic adjustment of operating modes, as well as temperature and humidity sensors. Thanks to innovative technologies, Reon Pocket 5 adjusts its operation depending on the user's activity and environmental conditions. Users can easily adjust the temperature using a dedicated mobile app connected via Bluetooth. Additionally, specially designed T-shirts and shorts are available for convenience, to which a mini air conditioner can be attached. The device can oh ... >>

Energy from space for Starship 08.05.2024

Producing solar energy in space is becoming more feasible with the advent of new technologies and the development of space programs. The head of the startup Virtus Solis shared his vision of using SpaceX's Starship to create orbital power plants capable of powering the Earth. Startup Virtus Solis has unveiled an ambitious project to create orbital power plants using SpaceX's Starship. This idea could significantly change the field of solar energy production, making it more accessible and cheaper. The core of the startup's plan is to reduce the cost of launching satellites into space using Starship. This technological breakthrough is expected to make solar energy production in space more competitive with traditional energy sources. Virtual Solis plans to build large photovoltaic panels in orbit, using Starship to deliver the necessary equipment. However, one of the key challenges ... >>

New method for creating powerful batteries 08.05.2024

With the development of technology and the expanding use of electronics, the issue of creating efficient and safe energy sources is becoming increasingly urgent. Researchers at the University of Queensland have unveiled a new approach to creating high-power zinc-based batteries that could change the landscape of the energy industry. One of the main problems with traditional water-based rechargeable batteries was their low voltage, which limited their use in modern devices. But thanks to a new method developed by scientists, this drawback has been successfully overcome. As part of their research, scientists turned to a special organic compound - catechol. It turned out to be an important component that can improve battery stability and increase its efficiency. This approach has led to a significant increase in the voltage of zinc-ion batteries, making them more competitive. According to scientists, such batteries have several advantages. They have b ... >>

Alcohol content of warm beer 07.05.2024

Beer, as one of the most common alcoholic drinks, has its own unique taste, which can change depending on the temperature of consumption. A new study by an international team of scientists has found that beer temperature has a significant impact on the perception of alcoholic taste. The study, led by materials scientist Lei Jiang, found that at different temperatures, ethanol and water molecules form different types of clusters, which affects the perception of alcoholic taste. At low temperatures, more pyramid-like clusters form, which reduces the pungency of the "ethanol" taste and makes the drink taste less alcoholic. On the contrary, as the temperature increases, the clusters become more chain-like, resulting in a more pronounced alcoholic taste. This explains why the taste of some alcoholic drinks, such as baijiu, can change depending on temperature. The data obtained opens up new prospects for beverage manufacturers, ... >>

Random news from the Archive

Wireless data transmission 1 terabit per second 26.02.2015

Researchers at the UK-based 5G Innovation Center of Surrey seem to have set a new record. Most recently, they tested equipment that provides wireless data transmission at speeds of more than 1 terabit per second with minimal latency.

This is truly an achievement that surpasses previous results - for example, 7,5 Gb / s achieved in Samsung laboratories. But more importantly, new systems have made it possible to reduce network delays to a value in the region of one millisecond.

True, in this mode they were tested at a distance of no more than 100 meters in laboratory conditions. The result has been confirmed and recorded, and now the researchers plan to conduct a series of tests in real conditions, which is scheduled for next year. And in 2018, it is planned to hold a public demonstration of the new communication technology.

As one of the project participants noted, the most important aspect of fifth generation (5G) networks will be long-term support for new applications. It is not yet known which applications will be used in 2020, 2030, and even more so in 2040, but one thing is clear - they will be very demanding on latency.

There is a lot of work to be done in the coming years before such speeds become a reality, as it will require a completely new infrastructure and new technologies that can fit in smartphones, but at the same time support such a fast data transfer. In the meantime, many LTE-enabled smartphones do not support all the capabilities of even fourth-generation networks (4G), and the LTE-Advanced standard allows you to download data at a speed of about 1 Gb / s for stationary receivers and around 300 Mb / s for mobile users.

See full Archive of science and technology news, new electronics

All languages of this page

Home page | Library | Articles | Website map | Site Reviews