Door lock, door lock controlling method and door lock controlling device

A door lock, comprising:

• a main controlling module;
• an unlocking module;
• a sensing module;
• and
• a timing module connected to the sensing module;
• wherein the sensing module is configured to:
• a) determine, by the sensing module, whether a human body is present within a first preset detection range;
• b) in response to determining, by the sensing module, that a human body is present within the first preset detection range:
• i) transmit, by the sensing module, a signal that causes the main controlling module and the unlocking module to be powered on;
• and
• ii) send, by the sensing module, human body sensing information to the timing module while sensing that the human body is present within the first preset detection range;
• and
• c) in response to receiving, by the sensing module, timeout information sent by the timing module that represents a determination that a human body is not present within the first preset detection range within a preset time period, control transmit, by the sensing module, a signal that causes the main controlling module and the unlocking module to be powered off;
• and
• wherein the timing module is configured to:
• a) record a first time point at which the human body sensing information is received by the timing module;
• b) search whether previous human body sensing information was received before the first time point;
• and
• c) in response to determining that previous human body sensing information was received before the first time point:
• i) search for a second time point at which the previous human body sensing information was received;
• and
• ii) in response to determining that a time difference between the first time point and the second time point is not greater than a time difference threshold, send first information to the sensing module, wherein the first information indicates that the time difference between adjacent two times of unlocking the door is not greater than the time difference threshold;
• wherein the sensing module is further configured to send the first information to the main controlling module;
• and
• wherein the main controlling module is configured to present the first information for communicating that another person opened or tried to open the door to avoid fright or collision between them.