Category Archives: Sensors

Digital Temperature Sensor with High Accuracy

Whether it is the body temperature, room temperature or the average temperature of the day, we take important decisions based on the various temperatures we measure and record. Although the mercury-based thermometer is still the most commonly used instrument, industrial temperature measurement has largely shifted to electronic sensors, data logging and digital displays. Accuracy in measurement is highly desirable and sensor manufacturers are constantly improving on their products offering better Read more [...]

A Stamp-Sized Radar Sensor from NXP

Radio waves are used for different purposes other than transmitting audio, video and for communication. One of their primary uses includes detecting the presence of objects in the atmosphere, including aircraft, clouds, and precipitation. This is done mainly through Radio Detection and Ranging or RADAR. By noting the time of flight that a single pulse takes to return after reflection from an atmospheric object, it is possible to estimate the distance of the object. To detect a target, radar systems Read more [...]

PIR Sensor: Let Raspberry Pi Guard your Home

With a versatile platform such as the Raspberry Pi or RBPi, prototyping a project is very simple. The scale does not matter for you can start with a single blinking LED and move on to complex quad copters. If you have the necessary components, simply add a little amount of imagination, and RBPi can work wonders for you. A practical use for the RBPi is to sense the surrounding environment. Not only is this interesting, but also gathering this data is useful in myriad ways. For example, a weather Read more [...]

A New 6 Axis Motion Sensor

Except for professional photographers using tripods, most people now use the camera within their smartphones to capture images of their surroundings. More often, unless your hands are exceptionally steady, the captured image is somewhat blurred. The act of holding the smartphone, aiming it properly to frame the image and touching the capture icon induces tremors and shakes that prevent the camera from capturing a steady picture. To counter the lack of stabilization when capturing images on a hand-held Read more [...]

Raspberry Pi Zero for a Real-Time Sensor Dashboard

Using the Raspberry Pi or RBPi, the single board computer (SBC), and a few applications from Google, you can have a functional dashboard showing real-time parameters from sensors. Google offers its App Engine in the form of a Platform as a Service or PaaS. The advantage is you can deploy and run your own applications using the Google infrastructure without bothering about exclusive ways of setting up hardware, servers, or Operating Systems. Google also offers the free and powerful Google Charts Read more [...]

The Latest Ultra-sensitive Gas Sensors

By using Graphene doped with Boron, scientists have developed ultra-sensitive gas sensors that could one day be able to detect the presence of one molecule of gas in a thousand trillion molecules of air. Various gases, such as those produced by explosives, are specifically difficult to detect – you need extra-sensitive sensors. However, scientists are considering Graphene as being the new material for creating a stream of electronic devices, including sensitive gas detectors. Graphene has high Read more [...]

How do Sensors Measure Gear Tooth Speed and Direction?

Measuring speed of gears is an important factor in various industries, especially in pharmaceutical, tobacco, printing, woodworking, paper, textile, food and others where rotational machinery predominates. Gear speed measurements also necessary in pumps, blowers, mixers, exhaust and ventilation fans, wheel-slip measurement on autos and locomotives, flow measurement on turbine meters and many more. The most common gear tooth sensors detect a change in the magnetic field for determining the speed Read more [...]

How do Sensors Measure Angle?

An angle is the degree of rotation of an object from a reference position about a central axis. In the engineering world, there are two types of angles requiring measurement. One is the physical or mechanical characteristic, such as the rotation of a shaft with respect to its bearing or housing. The other is a mathematical term such as the angle between two phases of alternating voltage system. Usually, sensors measure angles in a format that a computer or a machine can understand, interpret and Read more [...]

How do AC Current Sensors Work?

You can sense current using a series resistor and measuring the voltage drop across it. According to Ohm's law, the current through the resistor is then the voltage drop divided by the resistance value. That makes the voltage drop proportional to the value of the resistance and the current flowing through it. The disadvantage is obvious – to prevent the voltage drop from affecting the circuit parameters, one needs a very low value resistor when the current involved is high. Additionally, as the Read more [...]

ARDUINO 101: The Curie-Powered Sensor-Packed Arduino

Intel and Arduino have teamed up to generate a new single board computer, the Arduino 101. Scheduled for market availability in the first quarter of 2016, the Arduino 101 is powered by the Curie module from Intel. Aimed at educating youngsters in the emerging technologies, the SBC is packed with sensors, yet affordably priced. Arduino 101 has the input and output capabilities of the classic Arduino UNO, but also includes hardware for Bluetooth wireless communication. In addition, Arduino 101 comes Read more [...]