CN110308493B - Method and device for detecting human body in space - Google Patents
Method and device for detecting human body in space Download PDFInfo
- Publication number
- CN110308493B CN110308493B CN201910577351.1A CN201910577351A CN110308493B CN 110308493 B CN110308493 B CN 110308493B CN 201910577351 A CN201910577351 A CN 201910577351A CN 110308493 B CN110308493 B CN 110308493B
- Authority
- CN
- China
- Prior art keywords
- detection
- sub
- detection signal
- space
- human body
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V8/00—Prospecting or detecting by optical means
- G01V8/10—Detecting, e.g. by using light barriers
Abstract
The invention relates to a human body detection method and a human body detection device in a space, wherein the space is provided with an inlet and an outlet; the method comprises the following steps: arranging a first detection area at a position close to the inlet and the outlet; the first detection area comprises at least one first sub-detection area, and each first sub-detection area corresponds to one first sub-detection unit; judging whether the first sub-detection unit generates a first detection signal or not; if yes, judging the motion direction of the human body according to the first detection signal. The detection method of the invention realizes human body existence type induction and can accurately judge the motion direction of the human body.
Description
Technical Field
The invention relates to the technical field of human body detection, in particular to a method and a device for detecting a human body in a space.
Background
At present, the detection of the human body can adopt a traditional pyroelectric infrared sensor to detect the human body moving in a specified area, or adopt a microwave pyroelectric infrared sensor to detect the human body moving in the specified area, or adopt infrared geminate transistors to detect the human body moving in the specified area.
However, the traditional pyroelectric infrared sensor cannot detect the motion direction of the human body; and the pyroelectric infrared sensor only generates signal output for human bodies with lower motion frequency (0.1 Hz-10 Hz) and outputs no response to human body activities with motion frequency exceeding 10 Hz.
The microwave pyroelectric infrared sensor only has response output to a moving human body, does not have response output to a static human body, and cannot detect the motion direction of the human body; and the microwave pyroelectric infrared sensor generates electromagnetic radiation outwards, is easily interfered by external electromagnetic signals and has limited detection precision.
The infrared tube has limited monitoring distance (generally less than 50 cm), is detected by a single light point, and has small monitoring angle (only the position right in front of the probe has response output). Therefore, there is a need to find a detector that can simultaneously detect a moving human body and its direction in a wide area.
Disclosure of Invention
The present invention provides a method and an apparatus for detecting a human body in a space, aiming at the above-mentioned defects in the prior art.
The technical scheme adopted by the invention for solving the technical problems is as follows: providing a human body detection method in a space, wherein the space is provided with an inlet and an outlet; the method comprises the following steps:
arranging a first detection area at a position close to the inlet and the outlet; the first detection area comprises at least one first sub-detection area, and each first sub-detection area corresponds to one first sub-detection unit;
judging whether the first sub-detection unit generates a first detection signal or not;
if yes, judging the motion direction of the human body according to the first detection signal.
In one embodiment, the determining the moving direction of the human body according to the first detection signal includes:
processing the first detection signal to obtain a waveform of the first detection signal;
and comparing the waveform of the first detection signal with a preset waveform to determine that the human body enters the space from the entrance or leaves the entrance from the space.
In one embodiment, the method further comprises:
if the waveform of the first detection signal is matched with a preset waveform, judging that the human body enters the space from the entrance and the exit, and adding 1 to the number of people in the counter;
and if the waveform of the first detection signal is not matched with the preset waveform, judging that the human body leaves the inlet and the outlet from the space, and subtracting 1 from the number of the counter.
In an embodiment, if the waveform of the first detection signal matches a preset waveform, and it is determined that a human body enters the space from the entrance/exit, the method further includes, after adding 1 to the number of people in the counter:
judging whether a second detection signal and/or a third detection signal is received within a preset time period;
and if the second detection signal and/or the third detection signal are not received, judging that no person exists in the space, and clearing the number of the counter.
In one embodiment, the method further comprises:
arranging a third detection area in the space, wherein the third detection area comprises a plurality of non-overlapping third sub-detection areas, and each third sub-detection area corresponds to one third sub-detection unit;
judging whether the third sub-detection unit has jump triggering or not;
and if so, calculating the number N of the triggered third sub-detection units, and adding N or subtracting N to the number of the counter by combining the first detection signal.
In one embodiment, the method further comprises:
and judging whether a third sub-detection signal detected by the adjacent third sub-detection unit is within a second set time, if so, obtaining the movement track of the human body in the space according to the triggering sequence of the third sub-detection unit.
In one embodiment, said adding or subtracting N to the counter population in combination with said first detection signal comprises:
if the human body is judged to enter the space from the entrance and the exit according to the first detection signal, adding N to the number of the counter;
and if the human body is judged to leave the inlet and the outlet from the space according to the first detection signal, N is subtracted from the number of the counter.
In one embodiment, the method further comprises:
if the first detection signal is not received, judging whether a second detection signal is received or not;
if yes, judging whether a third detection signal is received or not;
if yes, judging whether the number of people in the counter is zero or not;
if yes, adding 1 to the counter number; if not, judging whether the third sub-detection unit has jump triggering;
if yes, calculating the number N of the triggered third sub-detection units;
judging whether the number N of the sub-detection units is larger than the number of people in the counter or not;
and if so, adjusting the number of the counter to be N.
The invention also provides a human body detection device in the space, wherein the space is provided with an inlet and an outlet; the method comprises the following steps:
arranging a first detection area at a position close to the inlet and the outlet; the first detection area comprises at least one first sub-detection area, and each first sub-detection area corresponds to one first sub-detection unit; further comprising:
the processor is used for judging whether the first sub-detection unit generates a first detection signal or not; if yes, judging the motion direction of the human body according to the first detection signal.
In one embodiment, further comprising:
a third detection area arranged in the space, wherein the third detection area comprises a plurality of non-overlapping third sub-detection areas, and each third sub-detection area corresponds to one third sub-detection unit;
the processor is further configured to:
judging whether the third sub-detection unit has jump triggering or not;
and if so, calculating the number N of the triggered third sub-detection units, and adding N or subtracting N to the number of the counter by combining the first detection signal.
In one embodiment, further comprising: and a second detection area is arranged in the space, a second detection unit is correspondingly arranged in the second detection area, and the detection range of the second detection area can cover the whole space.
In one embodiment, the second detection unit includes a second pyroelectric infrared sensor, and the second pyroelectric infrared sensor includes a second sensing unit and a second focusing unit disposed in a sensing direction of the second sensing unit and focusing a detection signal to the sensing direction of the second sensing unit, so that the second detection unit forms a second detection region along the detection direction thereof.
In one embodiment, the first sub-detection unit includes a first pyroelectric infrared sensor, and the first pyroelectric infrared sensor includes a first sensing unit and a first focusing unit disposed in a sensing direction of the first sensing unit and focusing a detection signal to the sensing direction of the first sensing unit, so that the first sub-detection unit forms a first sub-detection area along a detection direction thereof.
In one embodiment, the third sub-detection unit includes a third pyroelectric infrared sensor, and the third pyroelectric infrared sensor includes a third sensing unit and a third focusing unit disposed in a sensing direction of the third sensing unit and used for focusing a detection signal to the sensing direction of the third sensing unit, so that the third sub-detection unit forms a third sub-detection area along the detection direction thereof.
The method for detecting the human body in the space has the following beneficial effects: according to the method for detecting the human body in the space, the first detection area is arranged at the position close to the inlet and the outlet of the space, and the human body in the inlet and the outlet can be detected by using the first detection area, so that the motion direction of the human body can be judged based on the first detection signal generated by the first detection area, the human body existence type induction is realized, and the motion direction of the human body can be accurately judged.
Furthermore, the method for detecting the human body in the space can also obtain the moving track of the human body in the space, and prevent false alarm and redundant triggering.
Drawings
The invention will be further described with reference to the accompanying drawings and examples, in which:
FIG. 1 is a schematic flow chart of a method for detecting a human body in a space according to an embodiment of the present invention;
FIG. 2 is a schematic flow chart of another embodiment of a method for detecting a human body in a space according to the present invention;
FIG. 3 is a schematic flow chart of a method for detecting a human body in a space according to another embodiment of the present invention;
FIG. 4 is a schematic flow chart of another embodiment of a method for detecting a human body in a space according to the present invention;
FIG. 5 is a schematic structural diagram of a human body detecting device in a space according to an embodiment of the present invention;
FIG. 6 is a schematic diagram of a detection area of a human body detection device in a space according to an embodiment of the present invention;
fig. 7 and 8 are schematic diagrams of waveforms of human motion directions provided by the 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.
Referring to fig. 1, a schematic flow chart of a method for detecting a human body in a space according to an embodiment of the present invention is shown, where the method can effectively detect a motion direction of a human body and can perform presence sensing on the human body in the space 100.
Referring to fig. 6, the space 100 is provided with an entrance 101, when a human body enters or exits the space 100, the human body needs to enter or exit from the entrance 101, and then the human body enters or exits the entrance 101 through a detection signal generated by triggering when the human body enters or exits the entrance 101, so as to detect the movement direction of the human body entering or exiting the space 100.
Specifically, as shown in fig. 1, the detection method includes:
in step S1, a first detection area is set at a position near the entrance/exit 101.
The first detection region includes at least one first sub-detection region 102, and each first sub-detection region 102 corresponds to one first sub-detection unit. In the embodiment of the present invention, each of the first sub-detection units is an independent first sub-detection unit, each of which is formed with a detection area, and each of the first sub-detection areas 102 can cover the area of the entrance 101 and the exit 101, that is, when a human body enters the space 100 or leaves the space 100, each of the first sub-detection areas 102 can sense that the human body enters the space 100 or leaves the space 100, and generate a corresponding detection signal.
Further, each of the first sub-detection regions 102 is a linear detection region, and the length and width of the linear detection region are all greater than the length and width of the port 101, so that each of the first sub-detection regions 102 can completely cover even a region greater than the port 101.
Step S2, determining whether the first sub-detecting unit generates the first detecting signal.
Wherein the first probe signal comprises at least one first sub-probe signal.
And step S3, if yes, judging the motion direction of the human body according to the first detection signal.
Specifically, as shown in fig. 2, the step S3 of determining the moving direction of the human body according to the first detection signal includes:
step S31, the first detection signal is processed to obtain a waveform of the first detection signal.
Step S32, comparing the waveform of the first detection signal with a preset waveform to determine whether the human body enters the space 100 from the entrance 101 or leaves the entrance 101 from the space 100.
In the embodiment of the invention, the motion directions of the human body are different, and the waveforms of the first detection signals generated by triggering the first sub-detection units are different. Specifically, as shown in fig. 7, when a human body enters the space 100, the preset waveform is a sine wave with a positive slope; as shown in fig. 8, when a human body leaves the space 100, the triggered waveform is a sine wave with a negative slope, and therefore, by comparing the waveform of the first detection signal with a preset waveform, it can be determined whether the human body enters the space 100 from the entrance 101 or leaves the entrance 101 from the space 100. Specifically, when the waveform of the first detection signal matches a preset waveform, that is, the waveform of the first detection signal is a sine wave with a positive slope, it is determined that the human body enters the space 100 from the inlet/outlet 101; when the waveform of the first detection signal is not matched with the preset waveform, that is, the waveform of the first detection signal is a sine wave with a negative slope, it can be determined that the human body exits from the inlet/outlet 101 from the space 100.
Further, as shown in fig. 3, the method further includes:
step S301, if the waveform of the first detection signal is matched with the preset waveform, and the human body is judged to enter the space 100 from the entrance 101, the number of people in the counter is increased by 1.
Step S302, if the waveform of the first detection signal is not matched with the preset waveform, the person is judged to go out of the entrance 101 from the space 100, and the number of people in the counter is reduced by 1.
Further, after step S301, the method further includes:
step S303, determining whether the second detection signal and/or the third detection signal is received within a preset time period.
And step S304, if the second detection signal and/or the third detection signal are not received, judging that no person exists in the space 100, and clearing the number of the counter.
In the embodiment of the present invention, the second detection signal is generated when the second detection unit 12 senses the trigger of the human body, and the third detection signal is generated when the third detection unit 13 senses the trigger of the human body. Wherein the second detecting unit 12 and the third detecting unit 13 are both disposed in the space 100, and further, the third detecting unit 13 is disposed in the space 100 and is not close to the access 101. When the first sub-detection unit senses a human body and triggers generation of a first detection signal, and determines that the human body enters the space 100 from the entrance 101, if the second detection unit 12 and/or the third detection unit 13 arranged in the space 100 do not generate the second detection signal and/or the third detection signal within a preset time period, it is further determined that no person is in the space 100, and it is determined that the first detection signal is a false trigger signal, and at this time, the counter is cleared. The preset time period can be set to about 1-5 seconds, and certainly, the preset time period can be set according to the requirement and is not limited to 1-5 seconds.
Further, the method comprises the following steps:
step S11, a third detection area is set in the space 100, the third detection area includes a plurality of non-overlapping third sub-detection areas 104, and each third sub-detection area 104 corresponds to a third sub-detection unit.
And step S12, judging whether the third sub-detection unit has jump trigger.
And step S13, if yes, calculating the number N of the triggered third sub-detection units, and adding N or subtracting N to the number of the counter by combining the first detection signal.
In the embodiment of the present invention, each of the third sub-detection regions 104 is an independent detection region.
Further, the skip trigger generates a plurality of third sub-detection signals for the presence of a plurality of third sub-detection units within the first set time interval T1. Wherein the first set time interval T1 comprises a simultaneous or very short time (e.g., several milliseconds). The plurality of sub-detection units may be adjacent or non-adjacent third sub-detection units. The third sub-detection signal triggered and generated by the third sub-detection unit is a third detection signal, that is, the third detection signal in the embodiment of the present invention includes a plurality of third sub-detection signals.
Further, in conjunction with the first detection signal, adding N or subtracting N to the counter population comprises: if the human body is judged to enter the space 100 from the entrance 101 according to the first detection signal, adding N to the number of people in the counter; if the person is judged to go out of the entrance 101 from the space 100 according to the first detection signal, the number of people in the counter is decreased by N.
Specifically, if the third sub-detection unit has a jump trigger, at this time, it may be determined that the number of people moving in the space 100 is N according to the number N of the triggered third sub-detection units, and when it is determined that the human body has entered the space 100 from the entrance 101 or the exit 101 based on the first detection signal, it is described that N people moving in the space 100 have entered the space 100 from the entrance 101 or the exit 101, so N is added to the number of people in the counter; when it is determined that the human body is going out of the entrance 101 from the space 100 based on the first detection signal, it means that N persons moving in the space 100 are going out of the entrance 101 from the space 100, and therefore N is decremented for the counter number. In addition, when the first detection signal is not received, it can also be determined that N persons move in the space 100 by the number N of the triggered third sub-detection units, and N is added to the number of counter persons. Therefore, the change of the number of the human bodies in the space 100 can be accurately judged by the detection of the human bodies in the space 100 by the third sub-detection unit, and in combination with the first detection signal of the first detection area, whether the changed number of the human bodies enters the space 100 or leaves the space 100 can be judged, so that the actual number of people in the space 100 can be further determined; alternatively, the detection of the presence of a human body in the space 100 may also be achieved by a third sub-detection unit.
Further, the method further comprises: and judging whether the third sub-detection signal detected by the adjacent third sub-detection unit is within a second set time, if so, obtaining the movement track of the human body in the space 100 according to the triggering sequence of the third sub-detection unit. And the second set time is greater than the first set time interval.
As shown in fig. 4, the method further comprises the steps of:
step S401, if the first detection signal is not received, determining whether a second detection signal is received.
Step S402, if yes, whether a third detection signal is received is judged.
And S403, if yes, judging whether the number of people in the counter is zero or not.
Step S404, if yes, adding 1 to the number of the counter; if not, judging whether the third sub-detection unit has jump triggering.
And S405, if yes, calculating the number N of the triggered third sub-detection units.
And step S406, judging whether the number N of the sub detection units is larger than the number of people in the counter.
In step S407, if yes, the number of people in the counter is adjusted to N.
Specifically, if the first detection signal is not received (for example, in a limit situation, a human body entering the space 100 from the entrance/exit 101 enters quickly so that none of the first sub-detection units can sense), at this time, the second detection unit 12 may determine whether the human body is detected to generate the second detection signal, if the second detection unit 12 is triggered to generate the second detection signal, it is determined that the human body exists in the space 100 at this time, and then, the third detection unit 13 (where the third detection unit 13 is formed by a plurality of third sub-detection units) is further detected to generate the third detection signal. If the third detection signal is received, it is further determined that there is a human body in the space 100, and at this time, it is determined whether the number of people in the counter is zero. If the number of people in the counter is zero, it means that the first detection unit 11 cannot detect that the human body enters the space 100 through the entrance 101, and the count of the counter is wrong, and 1 is added to the number of people in the counter to correct the count of the counter. If the number of people in the counter is not zero, whether the third sub-detection unit has jump triggering is further judged, if yes, the number of people in the counter is adjusted based on the number N of the triggered third sub-detection units, namely the number of people in the counter is adjusted to be N.
Further, the method further comprises: and if the first detection signal and the second detection signal are not received, waiting for a preset time delay and then judging whether a third detection signal is received. The duration of the preset delay can be determined according to actual needs.
Further, as shown in fig. 6, the detection range of the first detection region is the region of the entrance 101, the detection range of the second detection region 103 is the entire space 100, and the third detection region is a region within the space 100, wherein the third detection region may or may not overlap with the first detection region.
In the present invention, the first detection region disposed near the entrance 101 can be used to determine the movement direction of the human body entering and exiting the space 100, as shown in fig. 7, when the waveform of the first detection signal is a sine wave with a positive slope, it is determined that the human body enters the space 100 through the entrance 101; as shown in fig. 8, when the waveform of the first detection signal is a sine wave with a negative slope, it is determined that the human body has exited from the space 100 into the exit 101. Further, false alarms and redundant triggering can be prevented by the second detection unit 12. In addition, the number of the moving human body in the space 100 can be judged by the third detection unit 13 (a plurality of third sub-detection units), and the moving direction of the human body in the space 100 (i.e. going out of the space 100 or entering the space 100) can be judged in combination with the first detection signal, and the moving track of the human body in the space 100 can be obtained by the adjacent third sub-detection units being triggered within the second set time and based on the triggering sequence.
Fig. 5 is a schematic structural diagram of a device for detecting a human body in a space according to an embodiment of the present invention. The device for detecting the human body in the space can be used for realizing the method for detecting the human body in the space provided by the embodiment of the invention.
As shown in fig. 5, the control device may include: at least one first sub-detecting unit, and each first detecting unit 11 corresponds to one first sub-detecting region 102. The at least one first sub-detection region 102 forms a first detection region. Wherein the first detection region is disposed at a position near the entrance 101 of the space 100, as shown in fig. 6.
In the embodiment of the present invention, each of the first sub-detectors is an independent first sub-detection unit, each of which is formed with a detection area thereof, and each of the first sub-detection areas 102 can cover the area of the entrance 101 and the exit 101, that is, when a human body enters the space 100 or leaves the space 100, each of the first sub-detection areas 102 can sense that the human body enters the space 100 or leaves the space 100, and generate a corresponding detection signal.
Further, each of the first sub-detection regions 102 is a linear detection region, and the length and width of the linear detection region are all greater than the length and width of the port 101, so that each of the first sub-detection regions 102 can completely cover even a region greater than the port 101.
Further, the detection device further comprises: a processor 14, wherein the processor 14 is configured to determine whether the first sub-detection unit generates the first detection signal; if yes, judging the motion direction of the human body according to the first detection signal.
Specifically, the processor 14 receives the first detection signal, processes the first detection signal to obtain a waveform of the first detection signal, and compares the waveform of the first detection signal with a preset waveform to determine that the human body enters the space 100 from the entrance 101 or leaves the entrance 101 from the space 100.
Further, the processor 14 is also configured to perform the following actions: if the waveform of the first detection signal is judged to be matched with the preset waveform, the human body is judged to enter the space 100 from the entrance 101, and at the moment, the processor 14 controls the number of people in the counter to be increased by 1; if the waveform of the first detection signal is judged not to match the preset waveform, the human body is judged to go out of the inlet and outlet 101 from the space 100, and the number of people in the counter is controlled to be reduced by 1.
Further, the processor 14 is specifically further configured to: and judging whether the second detection signal and/or the third detection signal is received or not within a preset time period, if the second detection signal and/or the third detection signal is not received, judging that no person exists in the space 100, and controlling the number of the counter to be reset.
Further, the detection device further comprises: a third detecting unit 13, wherein the third detecting unit 13 includes a plurality of third sub-detecting units, and each third sub-detecting unit corresponds to one third sub-detecting area 104. The plurality of third sub-detection regions 104 form a third detection region, and the plurality of third sub-detection regions 104 are independent detection regions and do not overlap, wherein the plurality of third sub-detection regions 104 form the third detection region, and the third detection region is disposed in the space 100.
Further, the processor 14 is specifically further configured to: and judging whether the third sub-detection unit has jump triggering or not, if so, calculating the number N of the triggered third sub-detection units, and adding N or subtracting N to the number of the counter by combining the first detection signal.
Further, the detection device further comprises: a second detection unit 12, wherein the second detection unit 12 forms a second detection region 103 in its detection direction. The second detection region 103 is disposed in the space 100, and a detection range of the second detection region 103 may cover the entire space 100.
Further, as shown in fig. 5, the detecting device may further include a base plate 10, and the first detecting unit 11, the second detecting unit 12, and the third detecting unit 13 are disposed on the base plate 10. The first detecting unit 11 in fig. 5 gives examples of two first sub-detecting units (including a1 and a2), and the third detecting unit 13 gives examples of 5 third sub-detecting units (including C1, C2, C3, C4, and C5). The example of fig. 5 does not have any limiting effect on the invention.
In the embodiment of the present invention, each of the first sub-detection units includes a first pyroelectric infrared sensor, and the first pyroelectric infrared sensor includes a first sensing unit and a first focusing unit disposed in a sensing direction of the first sensing unit and used for focusing a detection signal to the sensing direction of the first sensing unit, so that the first sub-detection unit forms a first sub-detection region 102 along the detection direction of the first sub-detection unit. Namely, each first sub-detection unit is an independent pyroelectric infrared sensor.
Further, the first focusing unit includes a first fresnel lens.
Further, each of the first pyroelectric infrared sensors includes: the first substrate, a first induction element arranged on the first substrate and a first pipe cap covering the periphery of the first induction element, wherein an induction window is arranged on the first pipe cap corresponding to the induction direction of the induction element.
In this embodiment of the present invention, the second detecting unit 12 includes a second pyroelectric infrared sensor, and the second pyroelectric infrared sensor includes a second sensing unit and a second focusing unit disposed in the sensing direction of the second sensing unit and used for focusing the detection signal to the sensing direction of the second sensing unit, so that the second detecting unit 12 forms a second detecting region 103 along the detecting direction thereof. It is to be understood that the second detection unit 12 of the embodiment of the present invention is composed of one pyroelectric infrared sensor.
Further, the second focusing unit includes a second fresnel lens, wherein the second fresnel lens is an array lens, which can make the detection range of the second detection unit 12 cover the whole space 100.
Further, the second pyroelectric infrared sensor includes: the second base plate, set up the second response unit on the second base plate and cover and establish the second pipe cap at second response unit outlying, the response direction that corresponds the response unit on the second pipe cap is equipped with the response window.
In this embodiment of the present invention, each of the third sub-detection units includes a third pyroelectric infrared sensor, and the third pyroelectric infrared sensor includes a third sensing unit and a third focusing unit disposed in a sensing direction of the third sensing unit and used for focusing a detection signal to the sensing direction of the third sensing unit, so that the third sub-detection unit forms a third sub-detection region 104 along the detection direction thereof.
Further, the third focusing unit includes a third fresnel lens. It can be understood that the angle of the fresnel lens of each of the third sub-detection units is different, so that the sub-detection regions formed by each of the third sub-detection units do not overlap.
Further, each of the third pyroelectric infrared sensors includes: the third base plate, set up third response unit on the third base plate and cover and establish the third pipe cap in third response unit periphery, the response direction that corresponds the response unit on the third pipe cap is equipped with the response window.
The above embodiments are merely illustrative of the technical ideas and features of the present invention, and are intended to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the scope of the present invention. All equivalent changes and modifications made within the scope of the claims of the present invention should be covered by the claims of the present invention.
It will be understood that modifications and variations can be made by persons skilled in the art in light of the above teachings and all such modifications and variations are intended to be included within the scope of the invention as defined in the appended claims.
Claims (5)
1. A method for detecting a human body in a space, the space being provided with an entrance and an exit; it is characterized by comprising:
arranging a first detection area at a position close to the inlet and the outlet; the first detection area comprises at least one first sub-detection area, and each first sub-detection area corresponds to one first sub-detection unit; further comprising: a second detection area is arranged in the space, a second detection unit is correspondingly arranged in the second detection area, and the detection range of the second detection area can cover the whole space; arranging a third detection area in the space, wherein the third detection area comprises a plurality of non-overlapping third sub-detection areas, and each third sub-detection area corresponds to one third sub-detection unit;
judging whether the first sub-detection unit generates a first detection signal or not;
if so, judging the motion direction of the human body according to the first detection signal; the judging the motion direction of the human body according to the first detection signal comprises: processing the first detection signal to obtain a waveform of the first detection signal; comparing the waveform of the first detection signal with a preset waveform to determine that the human body enters the space from the entrance or leaves the entrance from the space;
the method further comprises the following steps:
if the waveform of the first detection signal is matched with a preset waveform, judging that the human body enters the space from the entrance and the exit, and adding 1 to the number of people in the counter;
if the waveform of the first detection signal is not matched with a preset waveform, judging that the human body leaves the entrance from the space, and subtracting 1 from the number of the counter;
if the waveform of the first detection signal is matched with a preset waveform, and the human body is judged to enter the space from the entrance and the exit, the counter further comprises the following steps after adding 1 to the number of people:
judging whether a second detection signal and/or a third detection signal is received within a preset time period;
if the second detection signal and/or the third detection signal are not received, judging that no person exists in the space, and resetting the number of the counter;
judging whether the third sub-detection unit has jump triggering or not;
if yes, calculating the number N of the triggered third sub-detection units, and adding N or subtracting N to the number of the counter by combining the first detection signal; the adding N or subtracting N to the counter population in combination with the first detection signal comprises: if the human body is judged to enter the space from the entrance and the exit according to the first detection signal, adding N to the number of the counter; if the person is judged to leave the entrance from the space according to the first detection signal, N is subtracted from the number of the counter;
the method further comprises the following steps:
judging whether a third sub-detection signal detected by the adjacent third sub-detection unit is within a second set time, if so, obtaining a movement track of the human body in the space according to a trigger sequence of the third sub-detection unit;
the method further comprises the following steps:
if the first detection signal is not received, judging whether a second detection signal is received or not;
if yes, judging whether a third detection signal is received or not;
if yes, judging whether the number of people in the counter is zero or not;
if yes, adding 1 to the counter number; if not, judging whether the third sub-detection unit has jump triggering;
if yes, calculating the number N of the triggered third sub-detection units;
judging whether the number N of the sub-detection units is larger than the number of people in the counter or not;
and if so, adjusting the number of the counter to be N.
2. A human body detection device in a space, the space is provided with an inlet and an outlet; it is characterized by comprising:
arranging a first detection area at a position close to the inlet and the outlet; the first detection area comprises at least one first sub-detection area, and each first sub-detection area corresponds to one first sub-detection unit; further comprising:
the processor is used for judging whether the first sub-detection unit generates a first detection signal or not; if so, judging the motion direction of the human body according to the first detection signal; the judging the motion direction of the human body according to the first detection signal comprises: processing the first detection signal to obtain a waveform of the first detection signal; comparing the waveform of the first detection signal with a preset waveform to determine that the human body enters the space from the entrance or leaves the entrance from the space;
further comprising: a second detection area is arranged in the space, a second detection unit is correspondingly arranged in the second detection area, and the detection range of the second detection area can cover the whole space;
the processor is further configured to:
when the waveform of the first detection signal is matched with a preset waveform, judging that a human body enters the space from the entrance and the exit, and adding 1 to the number of people in the counter;
when the waveform of the first detection signal is not matched with a preset waveform, judging that the human body leaves the inlet and outlet from the space, and subtracting 1 from the number of the counter;
and when the waveform of the first detection signal is matched with a preset waveform, judging that a human body enters the space from the entrance and the exit, and adding 1 to the number of the counter, namely:
judging whether a second detection signal and/or a third detection signal is received within a preset time period;
if the second detection signal and/or the third detection signal are not received, judging that no person exists in the space, and resetting the number of the counter;
further comprising:
a third detection area arranged in the space, wherein the third detection area comprises a plurality of non-overlapping third sub-detection areas, and each third sub-detection area corresponds to one third sub-detection unit;
the processor is further configured to:
judging whether the third sub-detection unit has jump triggering or not;
if yes, calculating the number N of the triggered third sub-detection units, and adding N or subtracting N to the number of the counter by combining the first detection signal; the adding N or subtracting N to the counter population in combination with the first detection signal comprises: if the human body is judged to enter the space from the entrance and the exit according to the first detection signal, adding N to the number of the counter; if the person is judged to leave the entrance from the space according to the first detection signal, N is subtracted from the number of the counter;
the processor is further configured to:
judging whether a third sub-detection signal detected by the adjacent third sub-detection unit is within a second set time, if so, obtaining a movement track of the human body in the space according to a trigger sequence of the third sub-detection unit;
the processor is further configured to:
if the first detection signal is not received, judging whether a second detection signal is received or not;
if yes, judging whether a third detection signal is received or not;
if yes, judging whether the number of people in the counter is zero or not;
if yes, adding 1 to the counter number; if not, judging whether the third sub-detection unit has jump triggering;
if yes, calculating the number N of the triggered third sub-detection units;
judging whether the number N of the sub-detection units is larger than the number of people in the counter or not;
and if so, adjusting the number of the counter to be N.
3. The in-space human body detection device according to claim 2, wherein the second detection unit comprises a second pyroelectric infrared sensor, the second pyroelectric infrared sensor comprises a second sensing unit and a second focusing unit disposed in a sensing direction of the second sensing unit to focus a detection signal to the sensing direction of the second sensing unit, so that the second detection unit forms a second detection region along the detection direction thereof.
4. The in-space human body detection device according to claim 2, wherein the first sub-detection unit comprises a first pyroelectric infrared sensor, and the first pyroelectric infrared sensor comprises a first sensing unit and a first focusing unit disposed in a sensing direction of the first sensing unit and focusing a detection signal to the sensing direction of the first sensing unit, so that the first sub-detection unit forms a first sub-detection area along a detection direction thereof.
5. The in-space human body detection device according to claim 2, wherein the third sub-detection unit comprises a third pyroelectric infrared sensor, and the third pyroelectric infrared sensor comprises a third sensing unit and a third focusing unit disposed in a sensing direction of the third sensing unit and focusing a detection signal to a sensing direction of the third sensing unit, so that the third sub-detection unit forms a third sub-detection area along a detection direction thereof.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910577351.1A CN110308493B (en) | 2019-06-28 | 2019-06-28 | Method and device for detecting human body in space |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910577351.1A CN110308493B (en) | 2019-06-28 | 2019-06-28 | Method and device for detecting human body in space |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110308493A CN110308493A (en) | 2019-10-08 |
| CN110308493B true CN110308493B (en) | 2021-12-17 |
Family
ID=68079297
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910577351.1A Active CN110308493B (en) | 2019-06-28 | 2019-06-28 | Method and device for detecting human body in space |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110308493B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10160856A (en) * | 1996-11-28 | 1998-06-19 | Nec Robotics Eng Ltd | Pyroelectric human body detector |
| JP2007315965A (en) * | 2006-05-26 | 2007-12-06 | Sanyo Electric Co Ltd | Human body detector and video display apparatus |
| CN201886508U (en) * | 2010-12-06 | 2011-06-29 | 王雷 | Infrared human body movement identifying and counting device |
| JP2012013422A (en) * | 2010-06-29 | 2012-01-19 | Yazaki Corp | Moving direction determining device |
| CN104246839A (en) * | 2011-07-12 | 2014-12-24 | 泰科消防及安全有限公司 | Method and system for people counting using passive infrared detectors |
| CN108444604A (en) * | 2018-05-04 | 2018-08-24 | 深圳钶钽智能技术有限公司 | A kind of space partition zone detection device, system and method |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8410445B2 (en) * | 2011-03-30 | 2013-04-02 | Linudix Co., Ltd. | Human body sensing apparatus with improved accuracy |
| JP2015055493A (en) * | 2013-09-10 | 2015-03-23 | 株式会社リコー | Human body detection device, human body detection method and electronic device |
| CN106441596B (en) * | 2016-08-04 | 2019-03-26 | 深圳通感微电子有限公司 | Array infrared thermopile sensing device and method for sensing |
-
2019
- 2019-06-28 CN CN201910577351.1A patent/CN110308493B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10160856A (en) * | 1996-11-28 | 1998-06-19 | Nec Robotics Eng Ltd | Pyroelectric human body detector |
| JP2007315965A (en) * | 2006-05-26 | 2007-12-06 | Sanyo Electric Co Ltd | Human body detector and video display apparatus |
| JP2012013422A (en) * | 2010-06-29 | 2012-01-19 | Yazaki Corp | Moving direction determining device |
| CN201886508U (en) * | 2010-12-06 | 2011-06-29 | 王雷 | Infrared human body movement identifying and counting device |
| CN104246839A (en) * | 2011-07-12 | 2014-12-24 | 泰科消防及安全有限公司 | Method and system for people counting using passive infrared detectors |
| CN108444604A (en) * | 2018-05-04 | 2018-08-24 | 深圳钶钽智能技术有限公司 | A kind of space partition zone detection device, system and method |
Non-Patent Citations (1)
| Title |
|---|
| 热释电红外传感器及其在人员计数系统中的应用;易金桥等;《红外与激光工程》;20150430;第44卷(第4期);第1186-1191页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110308493A (en) | 2019-10-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4746910A (en) | Passive infrared intrusion detector employing correlation analysis | |
| US5693943A (en) | Passive infrared intrusion detector | |
| US7573032B2 (en) | Passive infra-red detectors | |
| US4523095A (en) | Radiation detector with asymmetrical pattern | |
| KR970010008B1 (en) | Ultrared object detecting device | |
| US6317040B1 (en) | Intruder detecting method and apparatus therefor | |
| EP2019999B1 (en) | Motion detector having asymmetric zones for determining direction of movement and method therefore | |
| US20100019903A1 (en) | Passive infrared detector | |
| JP2004078908A (en) | Crime prevention device and method thereof | |
| CA2884160A1 (en) | Room occupancy sensing apparatus and method | |
| KR20100022297A (en) | Apparatus for detecting intrusion and intrusion detection method using measuring the position of 3d sound source thereof | |
| CN110308493B (en) | Method and device for detecting human body in space | |
| JP2013210306A (en) | Human body detector | |
| CN107167851B (en) | Partition type infrared detector and partition type infrared detection method | |
| US20210158679A1 (en) | Adaptive fire detection | |
| JP3975776B2 (en) | Anomaly detection system | |
| EP3182389A1 (en) | Ceiling mounted motion detector with pir signal enhancement | |
| RU159824U1 (en) | SECURITY PASSIVE INFRARED DETECTOR | |
| US4800368A (en) | Pyroelectric detector arrangement | |
| KR101928417B1 (en) | System for determining orientation of moving object using plurality of UWB Radar(Pulse Radar) Sensor and method therefor | |
| KR101935542B1 (en) | People counter for enhancing accuracy efficiency | |
| JPH05203763A (en) | Human body detector | |
| RU170054U1 (en) | Security passive infrared detector | |
| JP3172274U (en) | Passive infrared detector | |
| RU2756593C1 (en) | Scanning flame detector with a function of determining the angular coordinate of the fire source |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |