CN-115201830-B - Target object detection method and device and intelligent door lock

Abstract

The embodiment of the invention discloses a target object detection method and a related device, wherein the method comprises the steps of obtaining target reflection parameters of a target area, determining movement parameters of a reflection source based on the target reflection parameters, judging whether the movement parameters are located in a first preset range, confirming that the type of the reflection source is a movement target object if the movement parameters are located in the first preset range, and confirming that the type of the reflection source is an interference source if the movement parameters are not located in the first preset range. By setting the preset range as the trigger condition, the detected movement parameters are compared with the trigger condition, and the corresponding functional element is started only when the trigger condition is met, so that the possibility of misjudgment is reduced, the power consumption of the equipment is reduced to a certain extent, and the use experience of a user is improved.

Inventors

• LU QI
• JIANG XIAOMING

Assignees

• 深圳绿米联创科技有限公司

Dates

Publication Date

20260512

Application Date

20220718

Claims (19)

1. 1. A target object detection method, characterized by comprising: The method comprises the steps of acquiring target reflection parameters of a target area, wherein the target reflection parameters are obtained by scanning a scanning instruction output by a difference control circuit, the difference control circuit is used for controlling the scanning frequency precision of a detection module, and the difference control circuit improves the scanning frequency precision of the detection module through a clock module with the precision higher than a set precision threshold so as to avoid the interference of detection equipment of the same type; Determining a moving parameter of a reflection source based on the target reflection parameter, and judging whether the moving parameter is in a first preset range, wherein the first preset range does not comprise an interference moving parameter which is determined in advance based on an interference signal of an interference source received by the detection module; if the movement parameter is located in the first preset range, confirming that the type of the reflection source is a movement target object; If the moving parameter is not located in the first preset range and is not lower than a first preset threshold, whether the reflection source is an interference source is identified, if the moving parameter is located in a second preset range, the reflection source is confirmed to be the interference source, the second preset range is determined and obtained based on a pre-acquired signal of the interference source of the target area, and the second preset range is determined based on an interference signal sent by the interference source.
2. 2. The method of claim 1, wherein the first predetermined threshold is not within the first predetermined range, and wherein the second predetermined range is not within the first predetermined range and is not lower than the first predetermined threshold.
3. 3. The target object detection method according to claim 2, wherein the method for acquiring the second preset range includes: Acquiring an interference signal sent by the interference source; and determining the second preset range based on the interference signal, wherein the second preset range comprises an interference movement parameter which is determined in advance based on the interference signal of the interference source received by the detection module.
4. 4. The method for detecting a target object according to claim 2, wherein the step of acquiring the target reflection parameter of the target area further comprises: Scanning the target area according to the scanning instruction, wherein the difference control circuit is used for controlling the scanning frequency precision of the detection module; And if the movement parameter is not located in the first preset range, the step of confirming that the type of the reflection source is an interference source includes: and when the movement parameter is judged not to be in the first preset range and to be lower than the first preset threshold value, confirming that the reflection source is the interference source through the detection module.
5. 5. The method of claim 4, wherein the detection module is an ultrasonic module.
6. 6. The method according to claim 5, wherein the difference control circuit triggers the micro control module by preventing the scan instruction from being sent to the micro control module by a logic and gate module if the clock module outputs a trigger signal.
7. 7. The method according to any one of claims 1 to 6, wherein after the step of confirming that the type of the reflection source is a moving target object if the movement parameter is within the first preset range, further comprising: and waking up and starting the functional element, wherein the functional element is used for collecting the information of the target object.
8. 8. A target object detection apparatus, characterized by comprising: The detection module is used for acquiring target reflection parameters of a target area, wherein the target reflection parameters are obtained by scanning a scanning instruction output by the difference control circuit, the difference control circuit is used for controlling the scanning frequency precision of the detection module, and the difference control circuit improves the scanning frequency precision of the detection module through a clock module with the precision higher than a set precision threshold so as to avoid the interference of detection equipment of the same type; The micro control module is connected with the detection module; The detection module or the micro control module is used for determining a moving parameter of a reflection source based on the target reflection parameter and judging whether the moving parameter is located in a first preset range, wherein the first preset range does not comprise an interference moving parameter which is determined in advance based on an interference signal of the interference source received by the detection module, the interference source comprises similar detection equipment which emits ultrasonic waves, if the moving parameter is located in the first preset range, the type of the reflection source is confirmed to be a moving target object, if the moving parameter is not located in the first preset range and is not lower than a first preset threshold, whether the reflection source is the interference source is confirmed, if the moving parameter is located in a second preset range, the reflection source is confirmed to be the interference source, the second preset range is determined based on a signal of the interference source of the target area which is obtained in advance, and the second preset range is determined based on the interference signal emitted by the interference source.
9. 9. The target object detection device of claim 8, wherein the first predetermined threshold is not located in the first predetermined range, and wherein the second predetermined range is not located in the first predetermined range and is not lower than the first predetermined threshold.
10. 10. The target object detection device of claim 9, wherein the detection module is further configured to obtain an interference signal sent by the interference source; The detection module or the micro control module is further configured to determine the second preset range based on the interference signal, where the second preset range includes an interference movement parameter that is determined in advance based on the interference signal of the interference source received by the detection module.
11. 11. The target object detection apparatus according to claim 9, further comprising: the difference control circuit is connected between the micro control module and the detection module, and is used for controlling the scanning frequency precision of the detection module and sending a scanning instruction to the detection module; and the detection module is used for responding to the scanning instruction to scan a target area, and confirming that the reflection source is the interference source when the movement parameter is not in the first preset range and is lower than the first preset threshold value.
12. 12. The target object detection apparatus according to claim 11, wherein the difference control circuit includes: the clock module is higher than a set precision threshold, and is used for outputting a trigger signal according to a preset time interval; The pulse generation module is connected between the clock module and the detection module and is used for responding to the trigger signal and outputting the scanning instruction to the detection module.
13. 13. The apparatus of claim 12, wherein the difference control circuit further comprises a logic AND gate module, respectively coupled to the micro control module, the pulse generation module, and the detection module, the logic AND gate module configured to prevent the scan command from being sent to the micro control module to trigger the micro control module if the clock module outputs the trigger signal.
14. 14. The apparatus of claim 13, wherein the clock module is configured to output the trigger signal to the pulse generating module and the logic AND gate module at the predetermined time interval, and wherein the logic AND gate module is configured to maintain the logic AND gate module in an off state in response to the trigger signal such that the scan command is not responded to by the logic AND gate module.
15. 15. The apparatus of claim 13, wherein the detecting module is configured to determine that the reflection source is the interference source when the moving parameter is not in the first preset range and is below the first preset threshold, and wake up the micro-control module through the logic and gate module when the moving parameter is not in the first preset range and is not below the first preset threshold, so as to identify whether the reflection source is the interference source through the micro-control module.
16. 16. The target object detection device of claim 13, wherein the logic and gate module comprises a first input terminal, a second input terminal, and an output terminal, the first input terminal is respectively connected with the output terminal of the clock module and the input terminal of the pulse generation module, and the second input terminal is respectively connected with the output terminal of the pulse generation module and the detection module, so that the scan command is prevented from being sent to the micro control module to trigger the micro control module when the clock module outputs the trigger signal.
17. 17. The target object detection device according to any one of claims 13 to 16, wherein the pulse generating module comprises a capacitor, a resistor and a switching unit; One end of the capacitor is respectively connected with the output end of the clock module and the first input end of the logic AND gate module, the other end of the capacitor is respectively connected with one end of the resistor and the control end of the switch unit, the other end of the resistor is respectively connected with an external power supply and the first pole of the switch unit, the second pole of the switch unit is respectively connected with the detection module and the second input end of the logic AND gate module, and the output end of the logic AND gate module is connected with the micro control module.
18. 18. An intelligent door lock, characterized by comprising: the device comprises a detection module, a difference control circuit, a clock module and a detection module, wherein the detection module is used for acquiring target reflection parameters of a target area, the target reflection parameters are obtained by scanning a scanning instruction output by the difference control circuit, the difference control circuit is used for controlling the scanning frequency precision of the detection module, and the difference control circuit improves the scanning frequency precision of the detection module through the clock module with the precision higher than a set precision threshold so as to avoid the interference of detection equipment of the same type; The micro control module is connected with the detection module; The detection module or the micro control module is used for determining a moving parameter of a reflection source based on the target reflection parameter and judging whether the moving parameter is located in a first preset range, wherein the first preset range does not comprise an interference moving parameter which is determined in advance based on an interference signal of the interference source received by the detection module, the interference source comprises similar detection equipment which emits ultrasonic waves, if the moving parameter is located in the first preset range, the type of the reflection source is confirmed to be a moving target object, if the moving parameter is not located in the first preset range and is not lower than a first preset threshold, whether the reflection source is the interference source is confirmed, if the moving parameter is located in a second preset range, the reflection source is confirmed to be the interference source, the second preset range is determined based on a signal of the interference source of the target area which is obtained in advance, and the second preset range is determined based on the interference signal emitted by the interference source.
19. 19. The intelligent door lock of claim 18, wherein the intelligent door lock further comprises a functional element; The micro control module is used for starting a functional element after confirming that the target object is a moving target object, and the functional element is used for collecting target object information.

Description

Target object detection method and device and intelligent door lock Technical Field The present invention relates to the field of sensing technologies, and in particular, to a method and an apparatus for detecting a target object, and an intelligent door lock. Background At present, with the rapid development of the Internet and the Internet of things, more and more people start to use intelligent door locks. In general, a detection device is installed on the intelligent door lock to detect movement of a target object, and when the movement of the target object is detected, the camera device on the intelligent door lock is controlled to be turned on, the keyboard lamp is turned on, the doorbell lamp is turned on, and the like. However, the current detection devices are prone to false detection. Disclosure of Invention In view of the above, the present invention provides a target object detection method and related device, which are used for solving the problem that the detection device in the prior art is prone to false detection. To achieve one or a part or all of the above or other objects, an embodiment of the present invention provides a target object detection method, including: acquiring a target reflection parameter of a target area; determining a moving parameter of a reflection source based on the target reflection parameter, and judging whether the moving parameter is in a first preset range, wherein the first preset range does not comprise an interference moving parameter which is determined in advance based on an interference signal of an interference source received by a detection module; if the movement parameter is located in the first preset range, confirming that the type of the reflection source is a movement target object; And if the movement parameter is not in the first preset range, determining whether the type of the reflection source is the interference source. Optionally, the step of determining whether the type of the reflection source is an interference source if the movement parameter is not in the first preset range includes: When the moving parameter is judged not to be located in the first preset range and not to be lower than a first preset threshold, the micro control module is used for identifying whether the reflection source is an interference source or not, and when the micro control module judges that the moving parameter is located in a second preset range, the reflection source is confirmed to be the interference source, the first preset threshold is not located in the first preset range, and the second preset range is not located in the first preset range and not lower than the first preset threshold. Optionally, the method for acquiring the second preset range includes: Acquiring an interference signal sent by the interference source; and determining the second preset range based on the interference signal, wherein the second preset range comprises an interference movement parameter which is determined in advance based on the interference signal of the interference source received by the detection module. Optionally, the step of acquiring the target reflection parameter of the target area further includes: receiving a scanning instruction output by a difference control circuit, and scanning the target area according to the scanning instruction, wherein the difference control circuit is used for controlling the scanning frequency precision of the detection module; And if the movement parameter is not located in the first preset range, the step of determining whether the type of the reflection source is an interference source includes: and when the movement parameter is judged not to be in the first preset range and to be lower than the first preset threshold value, confirming that the reflection source is the interference source through the detection module. Optionally, the difference control circuit improves the scanning frequency precision of the detection module through a clock module with precision higher than a set precision threshold. Optionally, the difference control circuit prevents the scanning instruction from being sent to the micro control module to trigger the micro control module under the condition that the clock module outputs the trigger signal through the logic AND gate module. Optionally, after the step of determining that the type of the reflection source is the moving target object if the movement parameter is in the first preset range, the method further includes: and waking up and starting the functional element, wherein the functional element is used for collecting the information of the target object. On the other hand, the embodiment of the application also provides a target object detection device, which comprises: The detection module is used for acquiring target reflection parameters of the target area; The micro control module is connected with the detection module; The detection module or the micro control module is used for determinin