阅读说明：本技术 目标体探测方法与装置及目标体温度探测方法与装置 (Target body detection method and device and target body temperature detection method and device ) 是由 不公告发明人 于 2019-12-16 设计创作，主要内容包括：本发明提供了一种目标体探测方法与装置及目标体温度探测方法与装置,其中的目标体探测方法,包括：利用微波传感器探测目标空间的N个当前目标体,得到每个当前目标体的探测信息；所述探测信息用于表征所述当前目标体的位置、姿态、运动状态以及运动轨迹中至少之一；利用不具有成像能力的被动红外传感器探测所述目标空间内的红外辐射能量分布与变化情况,得到用于表征所述红外辐射能量分布情况与变化情况的电信号；根据所述电信号,以及预先确定的第一匹配关系,验证所述N个当前目标体；所述第一匹配关系用于表征所述目标空间或其关联的典型环境中所述被动红外传感器的电信号的变化与所述微波传感器的探测信息变化之间的匹配关系。(The invention provides a target body detection method and device and a target body temperature detection method and device, wherein the target body detection method comprises the following steps: detecting N current target bodies in a target space by using a microwave sensor to obtain detection information of each current target body; the detection information is used for representing at least one of the position, the posture, the motion state and the motion trail of the current target body; detecting infrared radiation energy distribution and change conditions in the target space by using a passive infrared sensor without imaging capability to obtain an electric signal for representing the infrared radiation energy distribution conditions and the change conditions; verifying the N current target bodies according to the electric signals and a predetermined first matching relation; the first matching relationship is used for representing the matching relationship between the change of the electric signal of the passive infrared sensor and the change of the detection information of the microwave sensor in the target space or the typical environment associated with the target space.)

1. A method for detecting a target body based on a combination of a microwave sensor and a passive infrared sensor without imaging capability, the target body being a human body or an animal, comprising:

detecting N current target bodies in a target space by using a microwave sensor to obtain detection information of each current target body; the detection information is used for representing at least one of the position, the posture, the motion state and the motion trail of the current target body; wherein N is an integer greater than or equal to 1;

detecting infrared radiation energy distribution and change conditions in the target space by using a passive infrared sensor without imaging capability to obtain an electric signal for representing the infrared radiation energy distribution and the change conditions; the passive infrared sensor is matched with the microwave sensor in installation position, so that the passive infrared sensor and the microwave sensor have the common target space;

verifying the N current target bodies according to the electric signals and a predetermined first matching relation; the first matching relation is used for representing the matching relation between the change of the electric signal of the passive infrared sensor and the change of the detection information of the microwave sensor in the target space or the typical environment associated with the target space;

if any one of the N current target bodies is a misjudged target body, screening out the misjudged target body; the misjudgment target body is a target body which does not actually exist in the N current target bodies;

and if at least one new object is missed among the N current objects, triggering the microwave sensor to re-confirm the missed new object, wherein the missed new object is an object which actually exists but is not detected by the microwave sensor.

2. The method of claim 1, wherein validating the N current targets based on the electrical signal and a predetermined first match relationship comprises:

if the N current target bodies detected by the microwave sensor include a first suspected target body which is directly and newly appeared in the target space, and: when the first suspected target body is detected by the microwave sensor, the electrical signal is not changed to match the first suspected target body, and then: determining the first suspected target as the misjudgment target:

if the N current target bodies detected by the microwave sensor include a second suspected target body which moves relatively in the target space, and: when the second suspected target body is detected to generate relative motion, the electrical signal is not changed to match the second suspected target body, and then: and determining the second suspected target body as the misjudgment target body.

3. The method of claim 1, wherein validating the N current targets based on the electrical signal and a predetermined first match relationship further comprises:

if the N current target bodies detected by the microwave sensor include a first suspected target body which is directly and newly appeared in the target space, and: when the first suspected target body is detected by the microwave sensor, the electrical signal changes to match the first suspected target body, and then: determining the first suspected target volume as not being a misjudged target volume, such that the first suspected target volume is retained, and/or:

if the N current target bodies detected by the microwave sensor include a second suspected target body which moves relatively in the target space, and: when the second suspected target body is detected to generate relative motion, the electric signal is changed to match the second suspected target body, and then: determining that the second suspected target volume is not a false positive target volume such that the second suspected target volume is retained.

4. The method of claim 1, wherein validating the N current targets based on the electrical signal and a predetermined first match relationship further comprises:

if the electric signal changes only when a new target body directly appears, and the N current target bodies detected by the microwave sensor do not include the new target body, then: determining that the microwave sensor has missed detection of the new target; and/or:

if the N current targets detected by the microwave sensor do not include an old target detected before, and the electrical signal does not change until the old target disappears or moves away directly, then: determining that the microwave sensor missed detection of the old target.

5. The method of any one of claims 1 to 4, wherein the target-matching relationship is characterized by a target-mapping function, or a target-mapping neural network;

the target mapping function is a predetermined functional relation between the change of the electric signal of the passive infrared sensor and the change of the detection information of the microwave sensor in the target space or the associated typical environment;

the target mapping neural network is determined by utilizing the material of the electric signal of the passive infrared sensor and the material of the detection information of the microwave sensor in the target space or the associated typical environment in advance for training.

6. A target detection device based on a combination of a microwave sensor and a passive infrared sensor without imaging capability, the target being a human body or an animal, comprising:

the microwave detection module is used for detecting N current target bodies in a target space by using a microwave sensor to obtain detection information of each current target body; the detection information is used for representing at least one of the position, the posture, the motion state and the motion trail of the current target body; wherein N is an integer greater than or equal to 1;

the infrared detection module is used for detecting the infrared radiation energy distribution and the change condition in the target space by using a passive infrared sensor without imaging capability to obtain an electric signal for representing the infrared radiation energy distribution and the change condition; the passive infrared sensor is matched with the microwave sensor in the installation position, so that the passive infrared sensor and the microwave sensor have a common target space; (ii) a

The verification module is used for verifying the N current target bodies according to the electric signals and a predetermined first matching relation; the first matching relation is used for representing the matching relation between the change of the electric signal of the passive infrared sensor and the change of the detection information of the microwave sensor in the target space or the typical environment associated with the target space;

a screening module, configured to screen out a misjudged object if any one of the N current objects is a misjudged object; the misjudgment target body is a target body which does not actually exist in the N current target bodies;

and the reconfirming module is used for triggering the microwave sensor to reconfirm the new missed target body if at least one new target body is missed in the N current target bodies.

7. A method for detecting the temperature of a target body based on a combination of a microwave sensor and a passive infrared sensor without imaging capability, wherein the target body is a human body or an animal, comprising:

detecting M current target bodies in a target space by using a microwave sensor to obtain detection information of each current target body; the detection information is used for representing at least one of the position, the posture, the motion state and the motion trail of the current target body; wherein M is an integer greater than or equal to 1;

detecting infrared radiation energy distribution and change conditions in the target space by using a passive infrared sensor without imaging capability to obtain an electric signal for representing the infrared radiation energy distribution condition; the passive infrared sensor is matched with the microwave sensor in installation position, so that the passive infrared sensor and the microwave sensor have the common target space;

determining the body surface temperature information of at least part of the M current target bodies according to the detection information, the electric signals and a second matching relation; the second matching relationship is used for representing the matching relationship among the change of the detection information of the microwave sensor, the change of the electric signal of the passive infrared sensor and the relative body surface temperature of the target space or the associated typical environment of the target space.

8. A target body temperature detection device based on a combination of a microwave sensor and a passive infrared sensor without imaging capability, the target body being a human body or an animal, comprising:

the microwave detection module is used for detecting M current target bodies in a target space by using a microwave sensor to obtain detection information of each current target body; the detection information is used for representing at least one of the position, the posture, the motion state and the motion trail of the current target body; wherein M is an integer greater than or equal to 1;

the infrared detection module is used for detecting the infrared radiation energy distribution and the change condition in the target space by using a passive infrared sensor without imaging capability to obtain an electric signal for representing the infrared radiation energy distribution and the change condition; the passive infrared sensor is matched with the microwave sensor in installation position, so that the passive infrared sensor and the microwave sensor have the common target space; (ii) a

The temperature determining module is used for determining the body surface temperature information of at least part of the M current target bodies according to the detection information, the electric signals and the second matching relation; the second matching relationship is used for representing the matching relationship among the change of the detection information of the microwave sensor, the change of the electric signal of the passive infrared sensor and the relative body surface temperature of the target space or the associated typical environment of the target space.

9. An electronic device, comprising: a processor and a memory;

the memory for executable instructions of the processor;

the processor is configured to perform the method of any one of claims 1 to 5, or the method of claim 7, via execution of the executable instructions.

10. A storage medium having a program stored thereon, the program being characterized in that it implements the method of any one of claims 1 to 5, or the method of claim 7, when executed by a processor.

Technical Field

The invention relates to the field of sensor detection, in particular to a target body detection method and device and a target body temperature detection method and device based on a microwave sensor and a passive infrared sensor without imaging capability.

Background

The microwave sensor (typically, such as a 24Ghz microwave radar sensor, a 60G, 77Ghz millimeter wave sensor) can detect the positions of the human and the animal, detect the movement speed and acceleration characteristics of the human and the animal, and can also use the classifier to extract the characteristics (the contour of the reflection point, the movement characteristic, the effective reflection area, etc.) to distinguish the human, the animal, and other objects. The human and the animal can be regarded as the target body of the detection. Microwave sensor is widely used in household appliances, robot and AGV, Smart Home (Smart Home), intelligent building, factory automation, security monitoring, medical care, Home-based care, Smart city and so on in many fields.

However, in the related art, the microwave sensor is prone to generate "ghost" due to multipath reflection of the electric wave and other interference factors, and the "ghost" can be understood as that a target body and a mirror image of the reflected electric wave are detected by the sensor as a plurality of target bodies, or a single target body is erroneously sensed by the sensor as a plurality of target bodies, or the background is erroneously determined as a target, and meanwhile, the microwave sensor with high angular resolution and sensitivity, which is more transmitting and receiving, is more prone to generate "ghost".

In addition, many features of the reflected signal of the target detected by the microwave sensor have similarity, and the reflected signal of the background (for example, an object such as a table, a chair, an electric fan, etc.) is very similar to the reflected signal of a person (especially, the person is in a static state) in many scenes, which also causes misjudgment, and it is seen that the reflected signal is easily covered by background noise or other interference, resulting in missed judgment (for example, the person enters the detection area but the system fails to detect) or misjudgment (for example, the person leaves the detection area but the system does not detect the leaving of the target).

Therefore, in the prior art, the microwave sensor is prone to misjudgment, missed judgment and the like aiming at the target body.

Disclosure of Invention

The invention provides a target body detection method and device based on a microwave sensor and an infrared sensor and a target body temperature detection method and device, and aims to solve the problem that the microwave sensor is easy to generate misjudgment, missed judgment and the like aiming at a target body.

According to a first aspect of the present invention, there is provided a method for detecting a target body, which is a human body or an animal, based on a microwave sensor, comprising:

detecting N current target bodies in a target space by using a microwave sensor to obtain detection information of each current target body; the detection information is used for representing at least one of the position, the posture, the motion state and the motion trail of the current target body; wherein N is an integer greater than or equal to 1;

detecting the infrared radiation energy distribution condition in the target space by using a passive infrared sensor without imaging capability to obtain an electric signal for representing the infrared radiation energy distribution condition; the passive infrared sensor is matched with the microwave sensor in installation position, so that the passive infrared sensor and the microwave sensor have the common target space;

verifying the N current target bodies according to the electric signals and a predetermined first matching relation; the first matching relation is used for representing the matching relation between the change of the electric signal of the passive infrared sensor and the change of the detection information of the microwave sensor in the target space or the typical environment associated with the target space;

if any one of the N current target bodies is a misjudged target body, screening out the misjudged target body; the misjudgment target is a target which does not actually exist in the N current targets.

Optionally, verifying the N current target volumes according to the electrical signal and a predetermined first matching relationship, including:

if the N current target bodies detected by the microwave sensor include a first suspected target body which is directly and newly appeared in the target space, and: when the first suspected target body is detected by the microwave sensor, the electrical signal is not changed to match the first suspected target body, and then: determining the first suspected target as the misjudgment target:

if the N current target bodies detected by the microwave sensor include a second suspected target body which moves relatively in the target space, and: when the second suspected target body is detected to generate relative motion, the electrical signal is not changed to match the second suspected target body, and then: and determining the second suspected target body as the misjudgment target body.

Optionally, verifying the N current target volumes according to the electrical signal and a predetermined first matching relationship, further comprising:

if the N current target bodies detected by the microwave sensor include a first suspected target body which is directly and newly appeared in the target space, and: when the first suspected target body is detected by the microwave sensor, the electrical signal changes to match the first suspected target body, and then: determining the first suspected target volume as not being a misjudged target volume, such that the first suspected target volume is retained, and/or:

if the N current target bodies detected by the microwave sensor include a second suspected target body which moves relatively in the target space, and: when the second suspected target body is detected to generate relative motion, the electric signal is changed to match the second suspected target body, and then: determining that the second suspected target volume is not a false positive target volume such that the second suspected target volume is retained.

Optionally, verifying the N current target volumes according to the electrical signal and a predetermined first matching relationship, further comprising:

if the electric signal changes only when a new target body directly appears, and the N current target bodies detected by the microwave sensor do not include the new target body, then: determining that the microwave sensor has missed detection of the new target; and/or:

if the N current targets detected by the microwave sensor do not include an old target detected before, and the electrical signal does not change until the old target disappears or moves away directly, then: determining that the microwave sensor missed detection of the old target.

Optionally, the target matching relationship is characterized by a target mapping function or a target mapping neural network;

the target mapping function is a predetermined functional relation between the change of the electric signal of the passive infrared sensor and the change of the detection information of the microwave sensor in the target space or the associated typical environment;

the target mapping neural network is determined by utilizing the material of the electric signal of the passive infrared sensor and the material of the detection information of the microwave sensor in the target space or the associated typical environment in advance for training.

According to a second aspect of the present invention, there is provided a target body detection device based on a combination of a microwave sensor and a passive infrared sensor without imaging capability, the target body being a human body or an animal, comprising:

the microwave detection module is used for detecting N current target bodies in a target space by using a microwave sensor to obtain detection information of each current target body; the detection information is used for representing at least one of the position, the posture, the motion state and the motion trail of the current target body; wherein N is an integer greater than or equal to 1;

the infrared detection module is used for detecting the infrared radiation energy distribution and the change condition in the target space by using a passive infrared sensor without imaging capability to obtain an electric signal for representing the infrared radiation energy distribution and the change condition; the passive infrared sensor is matched with the microwave sensor in the installation position, so that the passive infrared sensor and the microwave sensor have a common target space;

the verification module is used for verifying the N current target bodies according to the electric signals and a predetermined first matching relation; the first matching relation is used for representing the matching relation between the change of the electric signal of the passive infrared sensor and the change of the detection information of the microwave sensor in the target space or the typical environment associated with the target space;

a screening module, configured to screen out a misjudged object if any one of the N current objects is a misjudged object; the misjudgment target body is a target body which does not actually exist in the N current target bodies;

and the reconfirming module is used for triggering the microwave sensor to reconfirm the new missed target body if at least one new target body is missed in the N current target bodies.

According to a third aspect of the present invention, there is provided a method for detecting a temperature of a target body based on a microwave sensor, the target body being a human body or an animal, comprising:

detecting M current target bodies in a target space by using a microwave sensor to obtain detection information of each current target body; the detection information is used for representing at least one of the position, the posture, the motion state and the motion trail of the current target body; wherein M is an integer greater than or equal to 1;

detecting the infrared radiation energy distribution condition in the target space by using a passive infrared sensor without imaging capability to obtain an electric signal for representing the infrared radiation energy distribution condition; the passive infrared sensor is matched with the microwave sensor in installation position, so that the passive infrared sensor and the microwave sensor have the common target space;

determining the body surface temperature information of at least part of the M current target bodies according to the detection information, the electric signals and a second matching relation; the second matching relationship is used for representing the matching relationship among the change of the detection information of the microwave sensor, the change of the electric signal of the passive infrared sensor and the relative body surface temperature of the target space or the associated typical environment of the target space.

According to a fourth aspect of the present invention, there is provided a target body temperature detection device based on a combination of a microwave sensor and a passive infrared sensor without imaging capability, the target body being a human body or an animal, comprising:

the microwave detection module is used for detecting M current target bodies in a target space by using a microwave sensor to obtain detection information of each current target body; the detection information is used for representing at least one of the position, the posture, the motion state and the motion trail of the current target body; wherein M is an integer greater than or equal to 1;

the infrared detection module is used for detecting the infrared radiation energy distribution condition in the target space by using a passive infrared sensor without imaging capability to obtain an electric signal for representing the infrared radiation energy distribution condition; the passive infrared sensor is matched with the microwave sensor in installation position, so that the passive infrared sensor and the microwave sensor have the common target space;

the temperature determining module is used for determining the body surface temperature information of at least part of the M current target bodies according to the detection information, the electric signals and the second matching relation; the second matching relationship is used for representing the change of the detection information of the microwave sensor, the change of the electric signal of the passive infrared sensor and the matching relationship of the relative body surface temperature of the target body in the target space or the associated typical environment.

According to a fifth aspect of the invention, an electronic device comprises: a processor and a memory;

the memory for executable instructions of the processor;

the processor is configured to perform the method of the first aspect and the alternatives thereof, or the method of the third aspect and the alternatives thereof, via execution of the executable instructions.

According to a sixth aspect of the present invention, there is provided a storage medium having a program stored thereon, wherein the program is to implement the method according to the first aspect and its alternatives, or the method according to the third aspect and its alternatives, when executed by a processor.

In the target body detection method and device based on the microwave sensor, a certain matching correlation exists between the change of the electric signal obtained by detecting the infrared radiation energy distribution by the passive infrared sensor and the change of the detection result of the microwave sensor, and the detection result of the microwave sensor can be verified based on the electric signal obtained by the passive infrared sensor on the basis of the first matching relation capable of representing the matching correlation, so that misjudgment target bodies such as 'ghost' can be screened out conveniently, and the detection result of the microwave sensor is effectively improved. In an alternative scheme, the microwave sensor can find the target body in time when the microwave sensor fails to detect the target body.

In the microwave sensor-based target body temperature detection method and device, the change of an electric signal obtained by detecting infrared radiation energy distribution by the passive infrared sensor, the change of a detection result of the microwave sensor and the actual body surface temperature of a detected target body have certain matching relevance, and the temperature of the target body can be deduced by taking the detection result of the microwave sensor as a basis on the basis of the second matching relation which can represent the matching relevance.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1a is a first schematic flow chart of a method for detecting an object based on a combination of a microwave sensor and a passive infrared sensor without imaging capability according to an embodiment of the present invention;

FIG. 1b is a schematic flow chart of a second method for detecting an object based on a combination of a microwave sensor and a passive infrared sensor without imaging capability according to an embodiment of the present invention;

FIG. 2 is a schematic diagram of the aggregation of points in a microwave sensor in accordance with an embodiment of the present invention;

FIG. 3 is a first flowchart illustrating the step S14 according to an embodiment of the present invention;

FIG. 4 is a second flowchart illustrating the step S14 according to an embodiment of the present invention;

FIG. 5 is a third flowchart illustrating the step S14 according to an embodiment of the present invention;

FIG. 6 is a fourth flowchart illustrating the step S14 according to an embodiment of the present invention;

FIG. 7 is a schematic flow chart of a method for detecting the temperature of an object based on a combination of a microwave sensor and a passive infrared sensor without imaging capability according to an embodiment of the present invention;

FIG. 8 is a schematic diagram of the program modules of an object detection device based on a combination of a microwave sensor and a passive infrared sensor without imaging capability according to an embodiment of the present invention;

FIG. 9 is a block diagram of a program for an apparatus for detecting a temperature of an object based on a combination of a microwave sensor and a passive infrared sensor without imaging capability according to an embodiment of the present invention;

FIG. 10 is a first schematic diagram of an electronic device according to an embodiment of the invention;

fig. 11 is a second schematic structural diagram of an electronic device in an embodiment of the invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.