-
公开(公告)号：US11566964B2
公开(公告)日：2023-01-31
申请号：US17284398
申请日：2018-10-10
Applicant: Huawei Technologies Co., Ltd.
Abstract: A circuit includes: a first electrical interface including a first pin, a resistor module, an alternating current signal source, a voltage detection module, and a controller. One end of the resistor module is electrically connected to the first pin. The alternating current signal source is electrically connected to the other end of the resistor module, and configured to generate an alternating current detection signal. The voltage detection module is connected to the first pin, and configured to detect a maximum voltage value and a minimum voltage value that are on the first pin within a period of the alternating current detection signal. The controller is separately connected to the alternating current signal source and the voltage detection module, and configured to, when a difference between the maximum voltage value and the minimum voltage value is less than a first threshold, determine that water enters the first electrical interface.
-
公开(公告)号：US20220218219A1
公开(公告)日：2022-07-14
申请号：US17610964
申请日：2020-05-13
Applicant: Huawei Technologies Co., Ltd.
Inventor： Yuliang Yao , Zhi Guo , Le Wang , Nan Lu , Rongguang Yang , Yi Xi , Shiyou Sun
Abstract: A smart wearable device includes a display screen, a rear cover that engages with the display screen, a light generator, and a light receiver. The light generator and the light receiver are disposed in a mounting cavity formed after the display screen engages with the rear cover, the light generator is configured to emit light to an outer side of the rear cover, the light receiver is configured to receive light transmitted from the outer side of the rear cover, the light generator is disposed on a first control panel, the light receiver is disposed on a second control panel, and the light generator is disposed closer to the rear cover than the light receiver.
-
公开(公告)号：US20210341351A1
公开(公告)日：2021-11-04
申请号：US17284398
申请日：2018-10-10
Applicant: Huawei Technologies Co., Ltd.
IPC: G01M3/40
Abstract: A circuit includes: a first electrical interface including a first pin, a resistor module, an alternating current signal source, a voltage detection module, and a controller. One end of the resistor module is electrically connected to the first pin. The alternating current signal source is electrically connected to the other end of the resistor module, and configured to generate an alternating current detection signal. The voltage detection module is connected to the first pin, and configured to detect a maximum voltage value and a minimum voltage value that are on the first pin within a period of the alternating current detection signal. The controller is separately connected to the alternating current signal source and the voltage detection module, and configured to, when a difference between the maximum voltage value and the minimum voltage value is less than a first threshold, determine that water enters the first electrical interface.
-
-
Search Results
3
records
(took 0.019 seconds)
