Knowing the heart rate data is very helpful while doing exercises, actively studying, etc. But measuring heart rate is a difficult problem. So, a pulse sensor is used to overcome this problem. This sensor is a plug & play heart-rate sensor, utilized by artists, students, athletes, mobile & game developers, makers who desire to know the existing heart-rate data to use in their live projects. This sensor merges a simple optical heart rate sensor through a circuit. This circuit is used … [Read more...]

IR technology is used in a wide range of wireless applications which includes remote controls and sensing. The infrared part in the electromagnetic spectrum can be separated into three main regions: near IR, mid-IR & far IR. The wavelengths of these three regions vary based on the application. For the near IR region, the wavelength ranges from 700 nm- 1400 nm, the wavelength of the mid-IR region ranges from 1400 nm - 3000 nm & finally for the far IR region, the wavelength ranges from … [Read more...]

In our day-to-day life, we all utilize different types of sensors. From that, the temperature sensor is one kind of sensor that is used most frequently in different forms like microwaves, water heaters, refrigerators, thermometers, etc. Generally, these types of sensors are used in a wide range of applications to measure the amount of coolness or hotness of the device and change it into a readable unit. Do you know how the temperature of the buildings, dams, boreholes, soil are measured:? … [Read more...]

Proximity sensor comprises all sensors that execute non-contact detection as compared to limit switches that notice objects through contacting physically them. These types of sensors change the data into an electrical signal on the movement or occurrence of a target. These sensors are used in mobile phones. Once the target is in a small range, then the lock screen of the mobile user interface will come into view which is called sleep mode. These sensors can be utilized to identify air gestures … [Read more...]

The controlling of street lights, make a light sensor circuit outdoor lights, a few indoor home appliances, and so on are usually maintained and operated manually on several occasions. This is not only risky but also results in wastage of power with the negligence of personnel or unusual circumstances in controlling these electrical appliances on and off. Hence, (based on the requirement) we can utilize the light sensor circuit for automatic switching of the loads based on daylight's intensity … [Read more...]

Different types of motion sensors are commonly used in security systems. They work based on a wide variety of principles and are used in a wide variety of applications. Typical usage could be in the exterior doorways or windows of a building for monitoring the area around the building. Upon detecting motion, they generate an electrical signal based on which some actions are taken. Some operate in much the same way as a military radar scanner, while others work based on vibration, infrared … [Read more...]

Even if a human body touches something, instantly the surface information will be passed to the brain using senses. Touch can also be felt by animals and plants. Hence the same technique can also be implied in today's electronics. Electronic devices consist of various sensors like temperature, pressure, humidity, etc. Similarly, a sensor-related touch device is also designed. Nowadays, we are coming across user interfaces that are operated on a single touch.  There is a wide range of … [Read more...]