Electronic lock

An electronic lock comprising:

• an electric locking unit;
• a touch panel including a circuit board that has a reference ground, a plurality of touch switches that are disposed on said circuit board, and a shielding circuit that is disposed on said circuit board around said touch switches for shielding said touch switches from the reference ground of said circuit board;
• and
• a control module including a scan control unit that is configured to store a plurality of touch condition sets which are related to human contact and which correspond respectively to said touch switches, each of the touch condition sets including a plurality of touch conditions that are pre-established respectively in different weather conditions, said control module being further configured to operate in one of an operation mode where said control module is configured to control said electric locking unit to operate, and a sleep mode where said scan control unit executes an intermittent scan operation once every predetermined time interval,
• wherein, in each time of execution of the intermittent scan operation, said scan control unit scans each of said touch switches individually by
• transmitting a constant current signal to said touch switch to charge a self capacitor formed by coupling between said touch switch and the reference ground of said circuit board for a predetermined time duration in a manner that the self capacitor remains undercharged,
• transmitting a driving signal to said shielding circuit to charge a mutual capacitor formed by coupling between said shielding circuit and said touch switch to make a high voltage level of a voltage of the mutual capacitor greater than a voltage of the self capacitor,
• determining whether an electric change relating to the self capacitor and the mutual capacitor conforms with anyone of the touch conditions included in the corresponding one of the touch condition sets, and
• switching to the operation mode when it is determined in the sleep mode that the electric change conforms with one of the touch conditions in the corresponding one of the touch condition sets.

An electronic lock comprising:

• an electric locking unit;
• a touch panel including a circuit board that has a reference ground, a plurality of touch switches that are disposed on said circuit board, and a shielding circuit that is disposed on said circuit board around said touch switches for shielding said touch switches from the reference ground of said circuit board;
• and
• a control module including a scan control unit that is configured to store a plurality of touch condition sets which are related to human contact and which correspond respectively to said touch switches, each of the touch condition sets including a plurality of touch conditions that are pre-established respectively in different weather conditions, said control module being further configured to operate in one of an operation mode where said control module is configured to control said electric locking unit to operate, and a sleep mode where said scan control unit executes an intermittent scan operation once every predetermined time interval,
• wherein, in each time of execution of the intermittent scan operation, said scan control unit scans each of said touch switches individually by
• transmitting a scan signal to said touch switch to charge a self capacitor formed by coupling between said touch switch and the reference ground of said circuit board so as to make a voltage of the self capacitor reach a predetermined voltage value,
• transmitting a driving signal to said shielding circuit to charge a mutual capacitor formed by coupling between said shielding circuit and said touch switch so as to make a voltage of the mutual capacitor equal to the voltage of the self capacitor,
• determining whether an electric change relating to the self capacitor and the mutual capacitor conforms with any one of the touch conditions included in the corresponding one of the touch condition sets, and
• switching to the operation mode when it is determined in the sleep mode that the electric change conforms with one of the touch conditions in the corresponding one of the touch condition sets.