WSN wireless sensor network WMS2000

Model WMS2000 Wireless Monitoring System is developed by BCM SENSOR to wirelessly monitor changes in force or pressure on site. The system consists of three blocks: four sensors, one wireless transceiver (model WTM2000) and one wireless receiver (model WRM2000). In this datasheet, model 1290 force sensor will be used as an example to explain how the system works to wirelessly monitor tightening of four bolts in distance. In this example the 1290 compression force sensor functions as a washer for the bolt, in order to monitor the tightening status of the bolt. The four sensors are connected to the transceiver with cables, while the transceiver communicates with the receiver at 433MHz radio frequency (RF) which enables communication distance up to 300 meter in an open area. The receiver, which can be installed in a control room, is integrated with a touch screen, by which the receiver can both store and indicate the tightening status of each of the four bolts monitored by the sensors. In case any of the bolts become loosened during the operation, the receiver will alert the operator in the control room. The WMS2000 system is operated as a plug-and-play force/pressure monitoring system without need of any computer. In fact, this system can work with any type of force and pressure sensors of either 4~20mA or millivolt (i.e., output from Wheatstone bridge circuit). In addition, this system can be turned into a Wireless Measuring System, model WMS3000, by which a specific force or pressure of interest can be measured remotely, for instance, in nuclear power plant or very harsh environment where human cannot access.