REMOVAL PREVENTION EQUIPMENT AND GPS MONITORING TERMINAL OF MOVING TARGET

摘要

A removal prevention equipment and a GPS monitoring terminal of moving target are provided. The removal prevention equipment includes a case(2), a handle(1), an elastic component(7) for driving the handle(1), a ratchet(3), a variable resistor(4) coaxially connected to the ratchet, a pawl(5), a pawl return component(6), and driving teeth(11) on the body of the handle(1) for engaging the ratchet(3). By employing the ratchet mechanism with the ratchet(3) engaging the pawl(5) and the driving teeth(11), once the removal occurs, the handle(1) is driven by the elastic component(7) to extend out of the case(2), and the driving teeth(11) drives the ratchet(3) to rotate because of the moving of the handle(1). The rotating ratchet(3) would change the resistance value of the variable resistor(4), and a changing signal is provided to the control circuit. After rotating, the ratchet(3) is fixed because of the securing function of the pawl(5), therefore, even if a power failure occurs in the system, a single-chip microcomputer could read out the changed resistance value signal of the variable resistor after the power recovers. The removal prevention equipment involves a record function, and could record that whether the removal occurs despite the power failure, and once the power recovers, an alarm is given. With power supply, the alarm is given once the removal occurs.