Doorbell device and associated control method
First Claim
1. A doorbell device, having a first power input terminal and a second power input terminal, the doorbell device coupled to a chime device, the doorbell device comprising:
- a current sensing circuit coupled to the first power input terminal, for generating a sensing voltage according to a current flowing through the current sensing circuit;
a switch circuit coupled between the current sensing circuit and the second power input terminal, wherein the switch circuit changes a conducting state in response to a control signal;
a processing circuit, configured to provide the control signal and determine a type of the chime device according to the sensing voltage;
a heating circuit;
a temperature sensing circuit, configured to control the heating circuit according to a sensed temperature, turn on the heating circuit when the processing circuit determines the chime device as analog and the sensed temperature is lower than a first threshold temperature, and turn off the heating circuit when the sensed temperature is higher than a second threshold temperature;
a battery; and
a charging circuit, configured to be controlled by the processing circuit to provide a charging current to the battery, and controlled by the processing circuit to decrease the charging current when the processing circuit determines the chime device as analog and the heating circuit is turned on.
1 Assignment
0 Petitions
Accused Products
Abstract
A doorbell device has a first power input terminal and a second power input terminal. The doorbell device is coupled to a chime device. The doorbell device includes a current sensing circuit, a switch circuit, and a processing circuit. The current sensing circuit is coupled to the first power input terminal, and generates a sensing voltage according to a current flowing through the current sensing circuit. The switch circuit is coupled between the current sensing circuit and the second power input terminal. The switch circuit changes the conducting state in response to a control signal. The processing circuit is configured to provide the control signal and determine the type of the chime device according to the sensing voltage.
43 Citations
6 Claims
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1. A doorbell device, having a first power input terminal and a second power input terminal, the doorbell device coupled to a chime device, the doorbell device comprising:
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a current sensing circuit coupled to the first power input terminal, for generating a sensing voltage according to a current flowing through the current sensing circuit; a switch circuit coupled between the current sensing circuit and the second power input terminal, wherein the switch circuit changes a conducting state in response to a control signal; a processing circuit, configured to provide the control signal and determine a type of the chime device according to the sensing voltage; a heating circuit; a temperature sensing circuit, configured to control the heating circuit according to a sensed temperature, turn on the heating circuit when the processing circuit determines the chime device as analog and the sensed temperature is lower than a first threshold temperature, and turn off the heating circuit when the sensed temperature is higher than a second threshold temperature; a battery; and a charging circuit, configured to be controlled by the processing circuit to provide a charging current to the battery, and controlled by the processing circuit to decrease the charging current when the processing circuit determines the chime device as analog and the heating circuit is turned on. - View Dependent Claims (2, 3)
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4. A control method for a doorbell device, the doorbell device coupled to a chime device, the doorbell device comprising a switch circuit, a current sensing circuit, a heating circuit, a charging circuit and a battery, the control method comprising:
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providing a control signal to control a conducting state of the switch circuit, wherein the switch circuit is coupled to the current sensing circuit, and the current sensing circuit generates a sensing voltage according to a current flowing through the current sensing circuit; determining a type of the chime device according to the sensing voltage; obtaining a sensed temperature; controlling the heating circuit according to the sensed temperature; turning on the heating circuit when the chime device is determined as analog and the sensed temperature is lower than a first threshold temperature; turning off the heating circuit when the sensed temperature is higher than a second threshold temperature; and adjusting a charging current provided by the charging circuit to the battery, wherein the step of adjusting the charging current comprises controlling the charging circuit to decrease the charging current when the chime device is determined as analog and the heating circuit is turned on. - View Dependent Claims (5, 6)
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Specification