CN113655470B - Object detection method, device, equipment and storage medium - Google Patents
Object detection method, device, equipment and storage medium Download PDFInfo
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- CN113655470B CN113655470B CN202110909773.1A CN202110909773A CN113655470B CN 113655470 B CN113655470 B CN 113655470B CN 202110909773 A CN202110909773 A CN 202110909773A CN 113655470 B CN113655470 B CN 113655470B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
- G01S13/02—Systems using reflection of radio waves, e.g. primary radar systems; Analogous systems
- G01S13/50—Systems of measurement based on relative movement of target
- G01S13/52—Discriminating between fixed and moving objects or between objects moving at different speeds
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
- G01B7/28—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring contours or curvatures
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
- G01S13/02—Systems using reflection of radio waves, e.g. primary radar systems; Analogous systems
- G01S13/50—Systems of measurement based on relative movement of target
- G01S13/58—Velocity or trajectory determination systems; Sense-of-movement determination systems
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Abstract
The present application relates to the field of detection, and in particular, to an object detection method, apparatus, device, and storage medium. The method comprises the following steps: acquiring a first detection signal, wherein the first detection signal is a signal of a signal transmitting device under a first transmitting power; identifying contour information of a target object from the first detection signal; determining a second transmitting power according to the contour information, and transmitting the second transmitting power to the signal transmitting device; and re-acquiring a second detection signal under the second transmitting power so as to detect the target object through the second detection signal. The application is used for solving the problem of energy waste caused by the same transmitting power of the signal transmitting device when different objects are detected in the prior art.
Description
Technical Field
The present application relates to the field of detection, and in particular, to an object detection method, apparatus, device, and storage medium.
Background
With the development of social economy and the improvement of the living standard of people, more and more furniture, household appliances and other objects are placed at all corners of the home by consumers. However, the increase of household appliances also makes it more difficult to find and catch cockroaches, mice or other unsophisticated guests hidden in the home. If one were to find these express guests, moving every piece of furniture or home appliance would obviously be time consuming and laborious, and not everyone would have the courage to directly face these express guests. Therefore, how to find these speedy guests outside a certain distance is important.
One detection mode in the prior art is to transmit detection signals into a space through a signal transmitting device, and then analyze the detection signals to realize detection of objects such as cockroaches, mice and the like. However, in the prior art, the transmission power of the signal transmission device is the same regardless of the detected object. Especially, in order to ensure that different objects, such as mice and ants, can be accurately detected, the transmitting power is set at a larger value, but the transmitting power required by detecting the object with a larger individual is smaller than the transmitting power required by detecting the object with a smaller individual, so that when the transmitting power is at the same value, unnecessary energy loss exists, and resource waste is caused.
Disclosure of Invention
The application provides an object detection method, an object detection device, an object detection equipment and a storage medium, which are used for solving the problem of energy waste caused by the same transmission power of a signal transmission device when different objects are detected in the prior art.
In a first aspect, an embodiment of the present application provides an object detection method, including: acquiring a first detection signal, wherein the first detection signal is a signal of a signal transmitting device under a first transmitting power; identifying contour information of a target object from the first detection signal; determining a second transmitting power according to the contour information, and transmitting the second transmitting power to the signal transmitting device; and re-acquiring a second detection signal under the second transmitting power so as to detect the target object through the second detection signal.
Optionally, the signal transmitting device is a microwave radar transmitting device; the first detection signal is a first microwave radar signal; the second detection signal is a second microwave radar signal.
Optionally, the identifying the profile information of the target object from the first detection signal includes: analyzing the first microwave radar signal to obtain the characteristics of the target object in the first microwave radar signal; and when the characteristics meet preset characteristic conditions, identifying the contour information of the target object from the first microwave radar signal.
Optionally, the characteristic comprises a velocity of the target object; the analyzing the first microwave radar signal, and obtaining the characteristics of the target object in the first microwave radar signal includes: analyzing the first microwave radar signal to obtain the speed of the target object in the first microwave radar signal; when the characteristic meets a preset characteristic condition, identifying the contour information of the target object from the first microwave radar signal, including: and when the speed of the target object is greater than zero, identifying the contour information of the target object from the first microwave radar signal.
Optionally, the feature comprises heartbeat information of the target object; the analyzing the first microwave radar signal, and obtaining the characteristics of the target object in the first microwave radar signal includes: analyzing the first microwave radar signal to obtain heartbeat information of the target object in the first microwave radar signal; when the characteristic meets a preset characteristic condition, identifying the contour information of the target object from the first microwave radar signal, including: and when the target object is determined to have the heartbeat according to the heartbeat information, identifying the outline information of the target object from the first microwave radar signal.
Optionally, the determining the second transmitting power according to the profile information includes: determining the diameter of an circumscribed circle of the outline of the target object according to the outline information; and taking the preset transmitting power corresponding to the diameter of the circumscribed circle as the second transmitting power of the signal transmitting device.
Optionally, the target object comprises at least one individual; the identifying the contour information of the target object from the first detection signal includes: identifying the profile information of each of the individuals from the first detection signals, respectively; the determining the diameter of the circumcircle of the outline of the target object according to the outline information comprises the following steps: determining the diameter of a circumcircle of each individual contour according to the contour information of each individual; the step of using the preset transmitting power corresponding to the diameter of the circumscribed circle as the second transmitting power of the signal transmitting device includes: obtaining the minimum diameter of the diameters of each circumscribed circle; and taking the preset transmitting power corresponding to the minimum diameter as the second transmitting power of the signal transmitting device.
Optionally, the target object comprises at least two individuals; the determining the diameter of the circumcircle of each individual contour according to the contour information of each individual includes: determining at least two individual contour intersections from the contour information of each of the individuals; taking the at least two individuals with the crossed outlines as one fusion individual; and obtaining the diameter of the circumscribed circle of the fused individual profile, and respectively obtaining the diameter of the circumscribed circle of each individual profile which is not intersected.
Optionally, the method comprises: the larger the diameter of the circumscribing circle is, the smaller the preset transmitting power is.
In a second aspect, an embodiment of the present application provides an object detection apparatus, including: the first acquisition module is used for acquiring a first detection signal, wherein the first detection signal is a signal of the signal transmitting device under the first transmitting power; the identification module is used for identifying the contour information of the target object from the first detection signal; the power determining module is used for determining second transmitting power according to the profile information and transmitting the second transmitting power to the signal transmitting device; and the second acquisition module is used for re-acquiring a second detection signal under the second transmitting power so as to detect the target object through the second detection signal.
In a third aspect, an embodiment of the present application provides an electronic device, including: the device comprises a processor, a memory and a communication bus, wherein the processor and the memory are communicated with each other through the communication bus; the memory is used for storing a computer program; the processor is configured to execute a program stored in the memory, to implement the object detection method according to the first aspect.
In a fourth aspect, an embodiment of the present application provides a computer readable storage medium storing a computer program, where the computer program implements the object detection method according to the first aspect when executed by a processor.
Compared with the prior art, the technical scheme provided by the embodiment of the application has the following advantages: according to the method provided by the embodiment of the application, the second transmitting power is determined through the contour information of the target object in the first detection signal, and the second transmitting power is transmitted to the signal transmitting device; and re-acquiring a second detection signal under the second transmitting power, and detecting the target object through the second detection signal. According to the method, the transmitting power of the signal transmitting device is adjusted according to the contour information of the target object, namely, the transmitting power suitable for the target object is adopted for different target objects, the transmitting power is adjusted in a targeted mode, the situation that unnecessary energy loss is caused by the fact that different target objects use the same transmitting power is avoided, and energy is saved.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the application and together with the description, serve to explain the principles of the application.
In order to more clearly illustrate the embodiments of the application or the technical solutions of the prior art, the drawings which are used in the description of the embodiments or the prior art will be briefly described, and it will be obvious to a person skilled in the art that other drawings can be obtained from these drawings without inventive effort.
Fig. 1 is a schematic diagram of flow steps implemented by an object detection method according to an embodiment of the present application;
FIG. 2 is a schematic view of a circumscribing circle of a target object according to an embodiment of the present application;
FIGS. 3 (a) and 3 (b) are schematic diagrams of two individuals with intersecting profiles according to an embodiment of the present application;
FIG. 4 is a schematic diagram of the outline of a fused individual according to an embodiment of the present application;
fig. 5 is a schematic structural connection diagram of an object detection device according to an embodiment of the present application;
fig. 6 is a schematic diagram of structural connection of an electronic device according to an embodiment of the present application.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present application more apparent, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments of the present application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
The object detection method provided by the embodiment of the application is realized in a processor capable of processing signals and data. The processor may be integrated in the detection device in which the signal emitting device is mounted, or may be located in other devices or apparatuses capable of signal transmission with the signal emitting device, instead of being integrated with the signal emitting device. The protection scope of the application is not limited by the location of the processor implementing the object detection method.
In one embodiment, as shown in fig. 1, the flow steps of the object detection method are as follows:
step 101, a first detection signal is obtained, wherein the first detection signal is a signal of the signal transmitting device under a first transmitting power.
In this embodiment, the signal transmitting device transmits the detection signal into the space, and the object existing in the space reflects the detection signal. The signal receiving device receives the reflected first detection signal and then transmits the first detection signal to the processor for processing. That is, the first detection signal acquired in the present embodiment is a detection signal reflected by an object in space.
In this embodiment, the specific implementation manner of the signal transmitting device may adopt any one of a microwave radar technology, a millimeter wave technology, an infrared technology and other technologies capable of implementing the method according to actual situations and needs. The signal transmitting device adopts corresponding technology.
Step 102, identifying contour information of the target object from the first detection signal.
In this embodiment, when the detection signal emitted by the signal emitting device is reflected back by the target object in the space, the reflected first detection signal includes the contour information of the target object. By resolving the reflected first detection signal, the contour of the target object can be identified.
And step 103, determining a second transmitting power according to the contour information, and transmitting the second transmitting power to the signal transmitting device.
In this embodiment, a correspondence between profile information and transmission power is preset, and different profile information corresponds to different transmission power. The correspondence may be pre-saved to the processor. After the profile information of the target object is identified from the first detection signal, the second transmitting power corresponding to the target object can be obtained through a preset corresponding relation.
Step 104, reacquiring the second detection signal at the second transmission power to detect the target object by the second detection signal.
In this embodiment, after determining the second transmission power, the processor transmits the second transmission power to the signal transmitting device, the signal transmitting device transmits the detection signal with the second transmission power, and the signal receiving device receives the second detection signal with the second transmission power and transmits the second detection signal to the processor. By the second detection signal, information required for the position and the like of the target object is obtained.
In this embodiment, specific values of the first transmission power and the second transmission power may be the same or different. When the values of the first transmitting power and the second transmitting power are the same, after the second transmitting power is transmitted to the signal transmitting device, the transmitting power of the signal transmitting device is maintained unchanged; when the values of the first transmitting power and the second transmitting power are different, the transmitting power of the signal transmitting device is automatically adjusted to the second transmitting power from the first transmitting power after the second transmitting power is transmitted to the signal transmitting device.
In one embodiment, when microwave radar technology is used in the object detection process, the signal transmitting device is a microwave radar transmitting device. The first detection signal is a first microwave radar signal, and the second detection signal is a second microwave radar signal. Specifically, a first detection signal is obtained, which is a first microwave radar signal. The contour information of the target object is identified from the first detection signal, and the contour information of the target object is identified from the first microwave radar signal. And re-acquiring a second detection signal under the second transmitting power to detect the target object through the second detection signal, and re-acquiring a second microwave radar signal under the second transmitting power to detect the target object through the second microwave radar signal.
In this embodiment, the radar judges whether a static or dynamic object is a radar by emitting electromagnetic waves of different frequencies and wavelengths. The transmitter of the radar device emits electromagnetic wave energy to a certain direction of space through the antenna, and an object in the direction reflects the electromagnetic wave; the radar antenna receives the reflected wave and sends it to the receiving device for processing, and extracts certain information about the object, such as the distance from the target object to the radar, the rate of change of distance, the radial velocity, the azimuth or the altitude. The microwave radar is a microwave radar signal generated by detecting the movement of an object, and can be used for detecting the movement of a person, an animal or other objects.
Different objects reflect microwave radar signals when moving, for example, moving human body reflected microwave radar signals are different from stationary furniture reflected microwave radar signals; for another example, according to the doppler effect of the radar, the doppler characteristic information analyzed from the microwave radar signal reflected from the human body is different from the doppler characteristic information analyzed from the microwave radar signal reflected from a small animal such as a rat or a cockroach, wherein there is relative motion between the radar and the object, the signal waveform is compressed or widened, the reflected echo of the radar generates a frequency shift, and the shift is proportional to the relative radial velocity of the scatterer and the radar, which is the doppler effect. By analyzing the microwave radar signal, the outline information of the object can be obtained according to the distance, speed, direction and other information of the object.
In one embodiment, the contour information of the target object is identified from the first detection signal, and the specific implementation process is as follows: analyzing the first microwave radar signal to obtain the characteristics of a target object in the first microwave radar signal; and when the characteristics meet preset characteristic conditions, identifying the contour information of the target object from the first microwave radar signal.
In this embodiment, the first microwave radar signal includes information of multiple types of objects in a space, for example, when multiple types of objects such as a human body, a cat, a mouse, and furniture exist in one space, the reflected first microwave radar signal includes information of multiple types of objects such as a human body, a cat, a mouse, and furniture. However, in the process of object detection, according to actual requirements, each object does not need to be detected, but a required target object needs to be determined in various objects.
In this embodiment, the features of the target object are first obtained from the first microwave radar signal, then, whether the obtained features meet the preset feature conditions is determined, if yes, the contour information of the target object is continuously identified from the first microwave radar signal, and if not, the next processing is not performed on the target object.
In this embodiment, the characteristic of the target object may be at least one of a speed, heartbeat information, and other characteristics that can be used to screen the target object. When the characteristics of the target object are two or more than two characteristics, each characteristic simultaneously meets the preset characteristic condition, and the contour information of the target object can be continuously identified.
In a specific embodiment, when the characteristic of the target object is the speed of the target object, the first microwave radar signal is analyzed, and the characteristic for positioning the target object in the first microwave radar signal is obtained, which comprises the following specific steps: and analyzing the first microwave radar signal to obtain the speed of the target object in the first microwave radar signal. When the characteristics meet preset characteristic conditions, identifying the contour information of the target object from the first microwave radar signal, wherein the specific implementation process is as follows: and when the speed of the target object is greater than zero, identifying the contour information of the target object from the first microwave radar signal.
In this embodiment, when the target object is a small animal such as a mouse or a cockroach, the small animal such as the mouse or the cockroach is a moving object, and by detecting the speed of the target object, the object which is not moving can be conveniently screened out, the information of the target object can be more accurately obtained, the number of target objects to be detected is reduced, and the detection of the target object can be better completed.
In a specific embodiment, when the characteristic of the target object is the heartbeat information of the target object, the first microwave radar signal is analyzed, and the characteristic for positioning the target object in the first microwave radar signal is obtained, which comprises the following specific steps: analyzing the first microwave radar signal, and obtaining heartbeat information of a target object in the first microwave radar signal. When the characteristics meet preset characteristic conditions, identifying the contour information of the target object from the first microwave radar signal, wherein the specific process is as follows: when the target object is determined to have a heartbeat according to the heartbeat information, the outline information of the target object is identified from the first microwave radar signal.
In this embodiment, when the target object is an animal with heartbeats, objects that do not need to be processed can be screened out by the heartbeat information. The information of the target objects is obtained more accurately, the number of the target objects to be detected is reduced, and the detection of the target objects is completed better.
In one embodiment, after the profile information is obtained from the first microwave radar signal, the second transmitting power is determined according to the profile information, which is specifically implemented as follows: determining the diameter of an circumscribed circle of the outline of the target object according to the outline information; and taking the preset transmitting power corresponding to the diameter of the circumscribed circle as the second transmitting power of the signal transmitting device.
In this embodiment, the contour information refers to two-dimensional plane information of the target object. The size of the target object can be well indicated by the diameter of the circumscribed circle obtained by the outline of the target object. For example, as shown in fig. 2, the irregular polygon in fig. 2 represents the target object, and the circle in fig. 2 is the circumcircle of the target object, and the diameter of the circumcircle is the circumcircle diameter of the target object.
In one embodiment, when the transmit power is preset, the setting principle is as follows: the larger the diameter of the circumscribing circle is, the smaller the preset transmitting power is. The larger the circumscribed circle is, the larger the volume of the target object is, the smaller the required signal detection precision is, and the smaller the required transmitting power of the corresponding signal transmitting device is; on the contrary, the smaller the circumscribed circle is, the smaller the volume of the target object is, the larger the required signal detection precision is, and the larger the required transmitting power of the corresponding signal transmitting device is.
In one embodiment, the target object comprises at least one individual, at which time processing is required for each individual. Specifically, from the first detection signal, the contour information of the target object is identified, and the specific process is as follows: from the first detection signals, profile information of each individual is identified, respectively. According to the contour information, determining the diameter of the circumscribed circle of the contour of the target object, wherein the method comprises the following specific processes: and determining the diameter of the circumcircle of each individual contour according to the contour information of each individual. The preset transmitting power corresponding to the diameter of the circumscribed circle is used as the second transmitting power of the signal transmitting device, and the specific process is as follows: obtaining the minimum diameter of the diameters of each circumscribing circle; and taking the preset transmitting power corresponding to the minimum diameter as the second transmitting power of the signal transmitting device.
In this embodiment, when the identified target object is two or more individuals and there are individuals with different diameters of the circumscribed circles, the preset transmitting power is determined according to the minimum diameter. For example, the target object includes two individuals, namely a mouse and an ant, the diameter of the circumcircle of the mouse is 15 cm, the diameter of the circumcircle of the ant is 1 cm, and the preset transmitting power corresponding to 1 cm is the second transmitting power.
In one embodiment, when the target object includes at least two individuals, there may be a case where the positions of two or more individuals are superimposed. For example, when two mice are present, the head of one mouse may be located on the back of the other mouse. At this time, according to the contour information of each individual, the diameter of the circumcircle of each individual contour is respectively determined, and the specific implementation process is as follows: determining that at least two individual contours intersect according to contour information of each individual; taking at least two individuals with crossed outlines as a fusion individual; and obtaining the diameter of the circumscribed circle of the fused individual contour, and respectively obtaining the diameter of the circumscribed circle of the individual contour which is not intersected by each contour.
For example, rectangles and ovals in fig. 3 (a) represent individual 1 and individual 2, respectively. The contours of individual 1 and individual 2 intersect, and the resulting fused individual contour is shown in fig. 3 (b). And taking the fusion individual as a whole to obtain the diameter of the circumscribed circle of the fusion individual.
In one embodiment, as shown in fig. 4, a processor for implementing the object detection method in the above embodiment and a microwave radar chip are integrated in a handheld device, where the microwave radar chip includes a microwave radar transmitting device and a microwave radar receiving device. A handheld device refers to a device that a user can hold for object detection.
Compared with the fixed-installation equipment, the handheld equipment is more flexible in detection mode, a user can place the handheld equipment at the position where the target object needs to be detected according to the needs, and the handheld equipment is suitable for more use scenes and wider in detection range. And the handheld device is more convenient to maintain.
In one embodiment, based on the above embodiment, the handheld device adopts a battery and charging dual power supply mode. When the battery power is low, the detection can be continuously finished in a charging mode, and the use experience of a user is improved.
In one embodiment, the handheld device is further integrated with a WiFi module, through which the handheld device is connected with a smart terminal, for example, with a smart phone. By installing the corresponding client on the intelligent terminal, when the handheld device detects the position of the target object, the position information of the target object, such as the distance or the azimuth of the target object from the handheld device, can be displayed in a digital form; alternatively, the contour information and/or the position information of the target object may be directly displayed in the form of an image.
According to the object detection method provided by the embodiment of the application, the second transmitting power is determined through the contour information of the target object in the first detection signal, and the second transmitting power is transmitted to the signal transmitting device; and re-acquiring a second detection signal under the second transmitting power, and detecting the target object through the second detection signal. According to the method, the transmitting power of the signal transmitting device is adjusted according to the contour information of the target object, namely, the transmitting power suitable for the target object is adopted for different target objects, the transmitting power is adjusted in a targeted mode, the situation that unnecessary energy loss is caused by the fact that different target objects use the same transmitting power is avoided, and energy is saved.
Based on the same concept, the embodiment of the present application provides an object detection device, and the specific implementation of the device may be referred to the description of the embodiment of the method, and the repetition is omitted, as shown in fig. 5, where the device mainly includes:
a first obtaining module 501, configured to obtain a first detection signal, where the first detection signal is a signal of the signal transmitting device under a first transmission power;
an identifying module 502, configured to identify profile information of the target object from the first detection signal;
a power determining module 503, configured to determine a second transmission power according to the profile information, and transmit the second transmission power to the signal transmitting device;
the second acquisition module 504 is configured to reacquire a second detection signal at a second transmission power, so as to detect the target object through the second detection signal.
Based on the same concept, the embodiment of the application also provides an electronic device, as shown in fig. 6, where the electronic device mainly includes: processor 601, memory 602, and communication bus 603, wherein processor 601 and memory 602 accomplish communication with each other through communication bus 603. The memory 602 stores a program executable by the processor 601, and the processor 601 executes the program stored in the memory 602 to implement the object detection method described in the above embodiment.
The communication bus 603 mentioned in the above-mentioned electronic device may be a peripheral component interconnect standard (Peripheral Component Interconnect, abbreviated to PCI) bus, an extended industry standard architecture (Extended Industry Standard Architecture, abbreviated to EISA) bus, or the like. The communication bus 603 may be divided into an address bus, a data bus, a control bus, and the like. For ease of illustration, only one thick line is shown in fig. 6, but not only one bus or one type of bus.
The memory 602 may include random access memory (Random Access Memory, simply RAM) or may include non-volatile memory (non-volatile memory), such as at least one disk memory. Alternatively, the memory may be at least one memory device located remotely from the aforementioned processor 601.
The processor 601 may be a general-purpose processor including a central processing unit (Central Processing Unit, CPU), a network processor (Network Processor, NP), a digital signal processor (Digital Signal Processing, DSP), an application specific integrated circuit (Application Specific Integrated Circuit, ASIC), a Field programmable gate array (Field-Programmable Gate Array, FPGA), or other programmable logic device, discrete gate or transistor logic device, or discrete hardware components.
In yet another embodiment of the present application, there is also provided a computer-readable storage medium having stored therein a computer program which, when run on a computer, causes the computer to perform the object detection method described in the above embodiment.
In the above embodiments, it may be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented in software, may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer instructions are loaded and executed on a computer, the processes or functions described in accordance with embodiments of the present application are produced in whole or in part. The computer may be a general purpose computer, a special purpose computer, a computer network, or other programmable apparatus. The computer instructions may be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, by a wired (e.g., coaxial cable, optical fiber, digital Subscriber Line (DSL)), or wireless (e.g., infrared, microwave, etc.) means from one website, computer, server, or data center to another. The computer readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server, data center, etc. that contains an integration of one or more available media. The usable medium may be a magnetic medium (e.g., floppy disk, hard disk, magnetic tape, etc.), an optical medium (e.g., DVD), or a semiconductor medium (e.g., solid state disk), etc.
It should be noted that in this document, relational terms such as "first" and "second" and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
The foregoing is only a specific embodiment of the application to enable those skilled in the art to understand or practice the application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (9)
1. An object detection method, comprising:
acquiring a first detection signal, wherein the first detection signal is a signal of a signal transmitting device under a first transmitting power;
identifying contour information of a target object from the first detection signal;
determining a second transmitting power according to the contour information, and transmitting the second transmitting power to the signal transmitting device;
re-acquiring a second detection signal at the second transmission power to detect the target object through the second detection signal;
the identifying the contour information of the target object from the first detection signal includes: analyzing a first microwave radar signal to obtain characteristics of the target object in the first microwave radar signal, wherein the first detection signal is the first microwave radar signal, and the characteristics comprise speed and heartbeat information of the target object; and when the speed of the target object is greater than zero and the target object is determined to have heartbeats according to the heartbeat information, identifying the outline information of the target object from the first microwave radar signal.
2. The object detection method according to claim 1, wherein the signal transmitting device is a microwave radar transmitting device;
the first detection signal is a first microwave radar signal;
the second detection signal is a second microwave radar signal.
3. The object detection method according to claim 1, wherein the determining the second transmission power according to the profile information includes:
determining the diameter of an circumscribed circle of the outline of the target object according to the outline information;
and taking the preset transmitting power corresponding to the diameter of the circumscribed circle as the second transmitting power of the signal transmitting device.
4. The object detection method of claim 3, wherein the target object comprises at least one individual;
the identifying the contour information of the target object from the first detection signal includes:
identifying the profile information of each of the individuals from the first detection signals, respectively;
the determining the diameter of the circumcircle of the outline of the target object according to the outline information comprises the following steps:
determining the diameter of a circumcircle of each individual contour according to the contour information of each individual;
the step of using the preset transmitting power corresponding to the diameter of the circumscribed circle as the second transmitting power of the signal transmitting device includes:
obtaining the minimum diameter of the diameters of each circumscribed circle;
and taking the preset transmitting power corresponding to the minimum diameter as the second transmitting power of the signal transmitting device.
5. The object detection method according to claim 4, wherein the target object includes at least two individuals;
the determining the diameter of the circumcircle of each individual contour according to the contour information of each individual includes:
determining at least two individual contour intersections from the contour information of each of the individuals;
taking the at least two individuals with the crossed outlines as one fusion individual;
and obtaining the diameter of the circumscribed circle of the fused individual profile, and respectively obtaining the diameter of the circumscribed circle of each individual profile which is not intersected.
6. The object detection method according to any one of claims 3 to 5, characterized by comprising:
the larger the diameter of the circumscribing circle is, the smaller the preset transmitting power is.
7. An object detection apparatus, comprising:
the first acquisition module is used for acquiring a first detection signal, wherein the first detection signal is a signal of the signal transmitting device under the first transmitting power;
an identifying module, configured to identify profile information of a target object from the first detection signal, including: analyzing a first microwave radar signal to obtain characteristics of the target object in the first microwave radar signal, wherein the first detection signal is the first microwave radar signal, and the characteristics comprise speed and heartbeat information of the target object; when the speed of the target object is greater than zero and the target object is determined to have heartbeats according to the heartbeat information, identifying the outline information of the target object from the first microwave radar signal;
the power determining module is used for determining second transmitting power according to the profile information and transmitting the second transmitting power to the signal transmitting device;
and the second acquisition module is used for re-acquiring a second detection signal under the second transmitting power so as to detect the target object through the second detection signal.
8. An electronic device, comprising: the device comprises a processor, a memory and a communication bus, wherein the processor and the memory are communicated with each other through the communication bus;
the memory is used for storing a computer program;
the processor is configured to execute a program stored in the memory to implement the object detection method according to any one of claims 1 to 6.
9. A computer readable storage medium storing a computer program, wherein the computer program when executed by a processor implements the object detection method of any one of claims 1 to 6.
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