地震报警器
他的发明包括一个导盲机器人、一台地震报警器和一把电子门锁。
His inventions include a guide robot, an earthquake alarm and an electronic door lock.
本实用新型涉及一种地震报警器，由电源电路、震动传感器、报警延时控制电路和声响报警电路连接构成。
The utility model relates to an earthquake alarm which is formed by the connection of a power circuit, a vibration sensor, an alarm delay control circuit and a sound alarm circuit.
应用推荐