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Cambridge Business English listening and speaking-Door circuit
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emily bett rickardsAs a modern and technological society, we rely heavily on electronic devices to make our lives more convenient and efficient. One such important invention is the door circuit. Door circuits are electronic circuits that control the opening and closing of doors in buildings or homes.小学英语字母教学
Another application of the door circuit is in automatic sliding doors. The doors typically are installed in hospitals, airports, shopping centers, and similar locations. The door circuit is programmed to open and clo the door smoothly and quietly, following the movement of people passing through the door. An infrared nsor detects when somebody is approaching the door, and the door circuit activates the motor to open the door.
剑桥少儿英语培训>sarMoreover, door circuits can also provide curity functions. For instance, they can detect when a door is violently forced, and in respon, the circuit can trigger an alarm or alert the
limesurvey>big cockcurity personnel. In addition, the door circuit can detect when unauthorized individuals try to gain access and it can signal the curity personnel.
In conclusion, door circuits are modern devices that have enhanced the safety, curity, and convenience of our daily lives. We can e the benefit from door circuits for a wide range of applications in buildings or homes. We can only e某pect that further innovations will be made in this field, making it even more convenient to our lives.merial
