Ameya360:What are the main types of wireless sensors

　　The component module of the wireless sensor is packaged in a shell, and it will be provided by the battery or the vibration generator when working, constituting the wireless sensor network node. It is widely used, and the wireless sensor is included in an electronic device everywhere in life. So wireless sensors are no stranger. In order to help you in-depth understanding, this article Ameya360 electronic components purchasing network will summarize the relevant knowledge of wireless sensors. If you're interested in what we're going to cover in this article, read on.

　　First, what is wireless sensor Wireless sensors are devices that collect sensory information and detect changes in the local environment. Examples of wireless sensors include proximity sensors, motion sensors, temperature sensors, and liquid sensors. Wireless sensors do not perform heavy data processing locally, they consume so little power that a single battery can last for years with the best wireless technology. In addition, sensors are easy to support on slow networks because they transmit very light data loads.

　　Wireless sensors can be grouped to monitor environmental conditions across an area. These wireless sensor networks consist of a number of spatially dispersed sensors that communicate through wireless connections. Sensors in a public network share data through nodes that consolidate information at the gateway or each sensor directly connected to the gateway, assuming it can reach the necessary range. Gateways act as Bridges connecting local sensors to the Internet, acting as both routers and wireless access points.

　　Two, the main types of wireless sensors

　　1. Vibration sensor

　　The maximum sampling rate of each node can be set to 4KHz, and each channel is provided with anti-aliasing low-pass filter. The collected data can be transmitted wirelessly to the computer in real time or stored in the 2M data memory built in the node, ensuring the accuracy of the collected data. The effective outdoor communication distance is up to 300m, the node power consumption is only 30mA, and the built-in rechargeable battery can be used for continuous measurement for 18 hours. If you choose a node with a USB interface, you can not only charge the node through the USB interface, but also quickly download the data in the memory to the computer.

　　2. Strain sensor

　　The node is compact in structure and compact in size. It is composed of power module, acquisition and processing module and wireless transceiver module. It is encapsulated in PPS plastic shell. Each channel of the node has an independent high-precision 120-1000Ω bridge resistance and amplification and conditioning circuit, which can be easily switched automatically by the software to select 1/4 bridge, half bridge, full bridge measurement mode, compatible with various types of bridge sensors, such as strain, load, torque, displacement, acceleration, pressure, temperature, etc. The node supports both 2-wire and 3-wire input modes, and the bridge is automatically trimmed. It can also be stored in the built-in 2M data storage of the node. Effective outdoor communication distance up to 300 m. It can be measured continuously for more than ten hours.

　　3. Torque sensor

　　The node is compact in structure, compact in size and encapsulated in a resin shell. Each channel of the node is equipped with a high precision 120-1000Ω bridge resistor and an amplification and conditioning circuit. Automatic bridge trim. The in-air transmission rate of the node can reach 250K BPS, the effective real-time data transmission rate can reach 4K SPS, and the effective indoor communication distance can reach 100 meters. The node is designed with special power management software and hardware. In the case of real-time uninterrupted transmission, the power consumption of the node is only 25mA, and the ordinary 9V battery can be used for continuous measurement for dozens of hours. For long-term monitoring applications, torque values are sent at 5-minute intervals, and battery replacement is not required for several years, greatly improving the system's maintainability.

　　In this article, Ameya360 can only give you a preliminary understanding of wireless sensors. I hope it will be of some help to you. At the same time, it needs to be summarized constantly so as to improve your professional skills.