Abstract: The present disclosure relates to a power management circuit including a control circuit, a first switch module, a second switch module, and a voltage conversion circuit. A first input end of the control circuit receives a main battery activeness detection signal, a first output end is connected to an enabling end of the second switch module which is connected to the voltage conversion circuit and an energy recovery component, and a second output end is connected to an enabling end of the first switch module which is connected to the voltage conversion circuit, a secondary battery, and a main battery. According to the received activeness detection signal, a channel used by the energy recovery component to charge the secondary battery is connected, or a channel used by the secondary battery or the energy recovery component to charge the main battery is connected.

Abstract: An electronic device and a charging method includes a photovoltaic power generation unit configured to charge a battery of the electronic device by using electric energy generated by a photovoltaic material included in the photovoltaic power generation unit. The charging method includes detecting light intensity applied to the photovoltaic material; and when the detected light intensity is always greater than a first preset threshold within a second preset duration, and a maximum variation within the second preset duration exceeds a second preset threshold, sampling an open-circuit voltage of the photovoltaic material, and setting a power generation parameter of the photovoltaic material according to the open-circuit voltage.

Abstract: The present disclosure relates to a wearable device and a wearable device charging method. The device includes a connector, a charging module, and a battery. The connector includes a first input end, a second input end, a first output end, and a second output end. The first input end is configured to receive a current signal, and the second input end is configured to receive a voltage signal. The first output end is connected to the charging module, and the charging module and the second output end are connected to the battery. The connector determines, according to the voltage signal of the second input end, whether the current signal is to be transmitted by the first output end or to be transmitted by the second output end to cause the wearable device to charge the battery according to the current signal directly or by the charging module.

Abstract: A monitoring method and a device for an intelligent monitoring system includes establishing a Bluetooth low energy (BLE) link between a front-end monitoring device and a back-end monitoring device; receiving, by the front-end monitoring device by using the BLE link, a first body temperature value sent by the back-end monitoring device; measuring, by the front-end monitoring device, body temperature of a monitoring person to obtain a second body temperature value; and determining, by the front-end monitoring device according to a variation of the first body temperature value relative to the second body temperature value, whether first prompt information needs to be generated.

Abstract: The present disclosure relates to example terminal unlocking methods. One example method includes controlling, by at least one processor of a terminal using an analog front end (AFE), a transmit electrode of the terminal to send a bioelectric current. A communications connection is established between the terminal and a band when a receive electrode receives the bioelectric current. The terminal then receives an unlocking password sent by the band and performs unlocking according to the unlocking password.

Abstract: An electronic device and a charging method includes a photovoltaic power generation unit configured to charge a battery of the electronic device by using electric energy generated by a photovoltaic material included in the photovoltaic power generation unit. The charging method includes detecting light intensity applied to the photovoltaic material; and when the detected light intensity is always greater than a first preset threshold within a second preset duration, and a maximum variation within the second preset duration exceeds a second preset threshold, sampling an open-circuit voltage of the photovoltaic material, and setting a power generation parameter of the photovoltaic material according to the open-circuit voltage.

Abstract: The present disclosure relates to a power management circuit including a control circuit, a first switch module, a second switch module, and a voltage conversion circuit. A first input end of the control circuit receives a main battery activeness detection signal, a first output end is connected to an enabling end of the second switch module which is connected to the voltage conversion circuit and an energy recovery component, and a second output end is connected to an enabling end of the first switch module which is connected to the voltage conversion circuit, a secondary battery, and a main battery. According to the received activeness detection signal, a channel used by the energy recovery component to charge the secondary battery is connected, or a channel used by the secondary battery or the energy recovery component to charge the main battery is connected.

Abstract: The present disclosure relates to a wearable device and a wearable device charging method. The device includes a connector, a charging module, and a battery. The connector includes a first input end, a second input end, a first output end, and a second output end. The first input end is configured to receive a current signal, and the second input end is configured to receive a voltage signal. The first output end is connected to the charging module, and the charging module and the second output end are connected to the battery. The connector determines, according to the voltage signal of the second input end, whether the current signal is to be transmitted by the first output end or to be transmitted by the second output end to cause the wearable device to charge the battery according to the current signal directly or by the charging module.

Abstract: An anti-lost notification method and an anti-theft device, which can improve accuracy of BLUETOOTH anti-lost notification, and avoid erroneous vibration notification in a non-lost case, where the method includes determining whether a step count value in first preset duration before a connection between an anti-theft device and a peer device is disconnected is greater than a preset value; if the step count value is greater than the preset value, determining whether a signal quality value sequence of a communication signal between the anti-theft device and the peer device shows a progressively decreasing trend in the first preset duration before the connected is disconnected; and giving an alarm if the signal quality value sequence shows a progressively decreasing trend in the first preset duration before the connected is disconnected.

Abstract: A monitoring method and a device for an intelligent monitoring system includes establishing a Bluetooth low energy (BLE) link between a front-end monitoring device and a back-end monitoring device; receiving, by the front-end monitoring device by using the BLE link, a first body temperature value sent by the back-end monitoring device; measuring, by the front-end monitoring device, body temperature of a monitoring person to obtain a second body temperature value; and determining, by the front-end monitoring device according to a variation of the first body temperature value relative to the second body temperature value, whether first prompt information needs to be generated.

Abstract: An anti-lost notification method and an anti-theft device, which can improve accuracy of BLUETOOTH anti-lost notification, and avoid erroneous vibration notification in a non-lost case, where the method includes determining whether a step count value in first preset duration before a connection between an anti-theft device and a peer device is disconnected is greater than a preset value; if the step count value is greater than the preset value, determining whether a signal quality value sequence of a communication signal between the anti-theft device and the peer device shows a progressively decreasing trend in the first preset duration before the connected is disconnected; and giving an alarm if the signal quality value sequence shows a progressively decreasing trend in the first preset duration before the connected is disconnected.