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RF Technologies installed an RFID emergency call system for Shorewood High School in the United States to enhance student safety in classrooms and corridors. Each instructor carries an RFID strap with him, which can be hung under his neck with a string or placed in his pocket. When they need to ask for help, they only need to press the middle button of the device. After the system was installed, the school management stated that it had successfully dealt with an emergency (two students were fighting in the classroom, and school security personnel started to deal with it in time).
The Help Alert system can run on an existing Wi-Fi network, or a Help Alert reader mesh network that complies with the ZigBee IEEE 802.15.2 protocol (called a “router” by the company), according to David Bussa, Global Solutions Director, Pinpoint, RF Technologies . Since Shorewood High School does not have an existing Wi-Fi system, ZigBee was chosen. The school has completed the beta version of the system in several buildings and is currently awaiting the official installation of the federal grant funding system.
The RFID pendant of the Help Alert system, press the middle button to ask for help
Shorewood High School occupies an area of 790,000 square feet, including 5 buildings, each three and a half stories high, with walls up to 3 feet thick, and the floor and steps are made of marble. “This is the ideal place for testing,” said Windham Gary, VP of Engineering at RF Technologies. “There is no longer a more challenging environment to test the tag to the reader, the reader to the gateway, and the gateway to send the data to the signal transmission between the back-end systems of the campus. This system covers three teaching buildings and between them. Public space.
“Our accident rate is very low,” said Tim Kenney, the school’s safety director. However, he added that school safety is more important than Mount Tai. In the event of an emergency, it is difficult to search the entire campus due to the open campus environment. Teachers can use the classroom phone to contact the outside world. However, in an emergency, the call may not be successful due to busy lines. Taking these factors into consideration, Kenney said that he thinks it is very appropriate to adopt such a system on campus.
The school has installed this system in three teaching buildings, and finally plans to adopt this system in all five buildings. At the end of 2008, RF Technologies began to install and test this system to ensure that the router reads the tags, forwards the data to the gateway, and finally reaches the back-end software. Schools are not allowed to install more power outlets in the aisles to power the readers, which delays the installation of the RFID system. The wireless tracking system was officially launched in February this year, using a total of 90 routers, covering 180,000 square feet of campus.
Currently, each instructor carries a 2-inch long oval pendant with a 2.4G RFID tag. The reader routes the tag’s ID code and its own ID code to the gateway (one gateway is installed in each building), and the gateway is connected to an independent RF Technologies server through an Ethernet network. One reader is installed in each classroom, and one reader is installed every 60 feet in the aisle. The system determines who is calling for help based on the person corresponding to the tag ID code, and determines the room or aisle where the tag is based on the reader that receives the strongest signal from the tag.
School management needs to know which classroom is calling, not where the tag is. The computer software in the school office displays a map of the school and a logo indicating the location of the label. The software also sends the alarm to the phone or calling machine of the relevant employee to indicate the time of the emergency and who triggered the alarm.
The system was tested several times before it was officially launched. Kenney said that when the label button was pressed, the pager responded immediately after a few seconds. Since the campus is not big, he can react within a few seconds.
RF Technologies is also installing this system in another junior high school in the state, using the existing Wi-Fi system of Xueyou school. In this case, RF Technologies’ Internet-based software can obtain information remotely. Moreover, the system can send information to the campus security team and the local police station.
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