| 摘要 |
A weight sensing device comprises at least one airbag (1) and an object sensing circuit (2). The airbag (1) comprises a space (11) therein. The space (11) is filled with a gas (12). The object sensing circuit (2) is arranged in the space (11) of the airbag (1). The object sensing circuit (2) comprises a microcontroller unit (21), a battery unit (22), a boost converter/voltage regulator loop unit (24), a gravity sensor unit (23), a pressure sensor unit (25), and a data transmission unit (27). When the airbag (1) is squeezed, the gravity sensor unit (23) is configured to sense a displacement and activate the battery unit (22) to provide a power supply to the object sensing circuit (2) for operation. Subsequently, the pressure sensor unit (25) is configured to sense that the space (11) of the airbag (1) is squeezed, generate a pressure change value accordingly, and transmit the pressure change value to the microcontroller unit (21) for further processing. The microcontroller unit (21) is configured to transmit the data via the data transmission unit (27) to a software built-in in electronic equipment (4), to enable to the software built-in in the electronic equipment (4) to receive a pressure change state when the airbag (1) receives a pressure. In doing so, a user holding the electronic equipment (4) can know a weight change state during a movement. The device only activates detection upon the gravity sensor unit (23) senses a displacement, and remains inactivated in a normal state, and is a low-power sensing device. |
