CN104756159A - Device and method for counting entrance/exit by using multiple sensors - Google Patents
Device and method for counting entrance/exit by using multiple sensors Download PDFInfo
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- CN104756159A CN104756159A CN201380037485.5A CN201380037485A CN104756159A CN 104756159 A CN104756159 A CN 104756159A CN 201380037485 A CN201380037485 A CN 201380037485A CN 104756159 A CN104756159 A CN 104756159A
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- G—PHYSICS
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- G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
- G07C9/00—Individual registration on entry or exit
Abstract
The present invention relates to a device and method for counting entrance/exit by using multiple sensors. The device for counting entrance/exit of a moving body by using multiple sensors, according to the present invention, comprises: a motion sensor which is mounted at a gate and detects the presence of a moving body with respect to an entrance or exit point of the gate by recognizing infrared wavelengths of the moving body passing through the gate; a temperature sensor which is mounted at the gate and detects the temperature of the moving body; and a control unit which determines an advancing direction of the moving body with respect to the gate by controlling operation timings of the motion sensor and the temperature sensor using detected values of the motion sensor and the temperature sensor, and which counts the number of moving bodies present in a target space inside the gate through the determined advancing direction. Accordingly, since the presence of a moving body and count information according to the advancing direction of the moving body can be acquired, the device is useful for various applications
Description
Technical field
The invention relates to the discrepancy counting assembly and method that utilize multisensor, is that the Infrared wavelength that utilizes moving body to send and sensing temperature calculate moving body of coming in and going out and go out the discrepancy counting assembly and the method that utilize multisensor of direction and number of times in more detail.
Background technology
PIR Sensor (Pyroelectric Infrared Sensor) refers generally to the sensor of perception infrared ray moving body action within the scope of certain distance, it is with human body temperature 36.5 degree for reference value, and perceived wavelength is about 7.5 ~ 13.5 μm of interval moving bodys.
Sensor surface is with filtrator, and the wavelength that filtrator enables sensor need passes through rapidly, and hinders passing through of other wavelength.By the waveform of filtrator, according to the instruction of inner perception amplification key element (FET), be changing into and evict from or the shape of amplification.Utilize above principle, sensor, when infrared ray moving body moves, can be recorded perception, if not motion, does not keep a record.
In general, this type of sensing technology is applicable to the fields such as illumination, warning horn, air-conditioning, automobile, household appliances now, is widely used in automatic opening and closing door, automatic illuminating, security personnel field especially.
The relevant technical notes of automatic illuminating is at home in disclosed 1996-0016640 technical patent file.Automatically will open indoor lamp when perceiving and entering indoor human action, when perception entering indoor human action through the stipulated time, indoor lamp will be closed automatically, and namely this is indoor lamp switch control device.But such prior art can only judge there is nil case with infrared ray moving body, and the directivity of perception moving body or the function of moving body counting cannot be provided, also there is the shortcoming that the scope of application is narrow, limited to.
Indoor are generally provided with the electronic product needing electric energy to run miscellaneous.Such electronic product indoor nobody time need cut off the electricity supply.The object of cutting off the electricity supply is to reduce the waste of electric energy, simultaneously advance preventing indoor nobody time the electronic product error running etc. that likely the occurs accident (such as overheated, fire, blast) that causes, and reduce the injury of human and material resources accident.But aforesaid prior art can only the action of merely perception people, direction when but cannot judge that people is entered in door by door or when going out, and cannot provide in door the situation that there is number one or more and exist with indoor nobody.
Up till now, the most of human perception loop being suitable for PIR Sensor is configured to main with ADC (Analog DigitalConverter).ADC plays a part simulating signal to convert digital signal to, so not only self has importance, also before ADC action, simulating signal is utilized Op-amp amplification or trap signal close to original signal or in order to the condition provided to ADC.
The major function of Op-amp analog signal processing process: be generally amplification, filtration (elimination noise) etc.But form low current loop because it forms very complicated being not suitable for, and it is easy to there is identification human body, but cannot judge the directivity of human action, and then cannot calculate the shortcoming of concrete data.
Associated factor comprises: the factors such as suitable noise and surrounding enviroment parameter, temperature and sunlight interference, these factors make to be difficult to draw directional data.After more being rested on for people indoor a period of time, any direction motion time, detect its direction more difficult. its reason is relevant with the characteristic of PIR Sensor before.Namely when people can perceive human body change wavelength when taking action incessantly, can work as that human body is not taken action, when maintaining static state, wavelength disappears at once and is difficult to perception.
Summary of the invention
The object of the invention is: be arranged on the motion sensor of door and temperature sensor whether to judge the existence of moving body for providing to utilize, and then judge the direction of motion of moving body to this, and by judging that direction calculates the discrepancy counting assembly and the method that utilize multisensor of moving body discrepancy quantity above.
The invention provides: a kind of discrepancy counting assembly utilizing multisensor, it is characterized in that, the described discrepancy counting assembly of multisensor that utilizes comprises: be arranged on door, carried out the motion sensor of perception moving body existence by the Infrared wavelength of the moving body identifying introduction; Be arranged on the temperature sensor of door, perception moving body temperature; Control assembly, control assembly utilizes the numerical value of above motion sensor and the perception of temperature sensor institute to control the initial point of two sensor actuation, and then judge the direction of the moving body by this, and calculating indoor moving body quantity by the direction judged above, this device is the discrepancy moving body counting assembly utilizing multisensor comprising control assembly.
The rule that described control assembly calculates indoor moving body quantity is as follows: it is forward that moving body enters in door, is counted as+1; Moving body inlet/outlet is outward reverse, is counted as-1.
The described discrepancy counting assembly of multisensor that utilizes also comprises wireless module, and wireless module at least carries out Wireless transceiver in the count information about the moving body existed in the direct of travel of above-mentioned door moving body, the counting of catatrepsis body, the counting of reverse moving body and object space by external mechanical.
The control principle of described control assembly is as follows: when some moving body Infrared wavelength of coming in and going out is perceived for the first time, opening start-up temperature sensor with the closedown of motion sensor to control the moving body temperature of perception, afterwards within moving body temperature drops to critical value, the secondary perception of opening of the closedown of start-up temperature sensor and motion sensor is come in and gone out the Infrared wavelength of some moving body.
Described control assembly come in and go out point perceive the wavelength of moving body at first after immediately start-up temperature sensor open perception moving body temperature; As moving body temperature exceedes arbitrary reference value, then start the closedown of motion sensor.
Described motion sensor refers to sensor body, motion sensor comprises and is arranged in sensor body, be arranged on inlet point, the wavelength value that perceives from moving body with or the first sensing core parts of transmitting of the value of negative or positive, and be arranged in sensor body, be arranged on the part that entry and exit point is corresponding, the second sensing core parts that the wavelength value that moving body perceives is transmitted by the plus or minus value that above first sensing core parts are contrary, first sensing core parts and the second sensing core parts are two core parts of the discrepancy counting assembly utilizing multisensor.
Described motion sensor and temperature sensor are all that front is in conjunction with Fresnel camera lens.Described motion sensor and temperature sensor are respectively motion pir sensor and temperature pir sensor.
A module of described motion sensor and being integrally formed of temperature sensor.
The present invention also provides: a kind of discrepancy method of counting utilizing multisensor, it is characterized in that, the described discrepancy method of counting of multisensor that utilizes comprises the following steps: by the step utilizing the Infrared wavelength of the motion sensor identification moving body being arranged on point of coming in and going out to carry out the existence of perception moving body; Utilize the step of the temperature sensor perception moving body temperature being arranged on point of coming in and going out; And, control assembly utilizes the numerical value of motion sensor and the perception of temperature sensor institute to come the action initial point of controlled motion sensor and the action initial point of temperature sensor, and then judge the direction of motion of moving body to this, and calculate the step of indoor moving body quantity by the direction of motion judged above.
The step of the indoor moving body quantity of described calculating comprises: if it is forward that moving body enters in door, be counted as+1; Moving body inlet/outlet is reverse direction outward, is counted as-1.
Described in catatrepsis body counting, reverse moving body counting, object space moving body quantity, at least one needs the step of externally machine Wireless transceiver.
The step of described judgement moving body direction of motion comprises the following steps: when some moving body Infrared wavelength of coming in and going out is perceived for the first time, by opening with the closedown of motion sensor to control the step of the moving body temperature of perception of start-up temperature sensor; Afterwards within moving body temperature drops to critical value, the secondary perception of opening of the closedown of start-up temperature sensor and motion sensor is come in and gone out the step of Infrared wavelength of some moving body.
Discrepancy counting assembly and the method for multisensor is utilized according to the present invention, utilize the motion sensor and temperature sensor that are arranged on door to judge that whether moving body exists, and then judge moving body travel direction, and indoor moving body count information can be obtained, be advantageously applied in this type of application various.
Accompanying drawing explanation
Fig. 1 is the discrepancy counting assembly pie graph utilizing multisensor that operating principle according to the present invention makes.DL1 and DL2 in Fig. 1 is the one of Digital Single Line Directional interface (the directed interface of digital single line), shows as Direct Link.The changing value of sensor passes to control assembly by the digital conversion of the directed interface of digital single line, now control assembly by digital single line orientation interface sensor with communicate and sensor changing value data.P1 and P2 represents that, on the meaning of link MCU and TTL (Transistor toTransi stor Logic), the Port 1 of specific GPIO (General Purpose Input Output), 2 show as P1 and P2.P1 and P2 links DL1 and DL2 respectively by utilizing GPIO Port in MCU, passes on the order language of LOW (" 0 ")/HIGH (" 1 ") signal, and receiving sensor changing value data.
Fig. 2 represents that the motion sensor of Fig. 1 and temperature sensor are arranged on the schematic diagram of the example in reveal face.
Fig. 3 represents the structural representation of the motion sensor of Fig. 1.
Fig. 4 ~ Fig. 6 is the concept map of the 1st running example to the 3rd running example of the motion sensor sensing waveform of key diagram 3 respectively.
Fig. 7 is the concept map of the action initial point of the control assembly control sensor of key diagram 1.
Fig. 8 is the process flow diagram of the discrepancy moving body method of counting utilizing Fig. 1.
Fig. 9 is the detail flowchart of the S830 step of Fig. 8.
Figure 10 utilizes the direction of Fig. 1 and the detail flowchart of counting acquisition methods.
Figure 11 represent according to running example of the present invention, the reality of the discrepancy counting assembly that utilizes multisensor looks into the schematic diagram of image.
Figure 12 represents the decomposing schematic representation of Figure 11.
Embodiment
Describe in detail with reference to appended drawing and running example of the present invention, the worker making the technical field belonging to the present invention be familiar with general knowledge more easily operates.
Fig. 1 is the discrepancy moving body counting assembly pie graph utilizing multisensor that operating principle according to the present invention makes.Above-mentioned discrepancy counting assembly 100 comprises motion sensor 110, temperature sensor 120, control assembly 130, wireless module 140.
Above-mentioned motion sensor 110 and said temperature sensor 120 are mounted in the door 10 (Gate) that moving body is come in and gone out.Such as, motion sensor 110 and temperature sensor 120 are mounted in top or the side of door 10.
Wherein for the requirement of door 10, as long as moving body passes through passage just its form irrelevant easily, and do not distinguish the presence or absence of door yet.For the requirement of above-mentioned moving body, as long as the moving body comprising Infrared wavelength is just passable, have nothing to do with other factors.That is, the concept of moving body comprises people, animal (such as dog), disperses the various mobile means (such as car) of Infrared wavelength.With in the explanation of lower part, in order to the convenience illustrated, moving body is illustrated as human body.
Above motion sensor 110 can realize its concrete function by PIR (Pyroelectric Infrared) sensor being suitable for many FET, is carried out the existence of perception moving body by the Infrared wavelength of the moving body identifying above access door 10.That is, with the Infrared wavelength of dispersing in moving body, (for benchmark, the Infrared wavelength about detecting 7.5 ~ 13.5 μm carrys out perception moving body to the body temperature (36.5 degree) of such as people to motion sensor 110.
This motion sensor 110 forms with digital pir sensor, after detecting the wavelength size of perceive motion sensed values with the 2 binary data positions of 14bit (Binary Data Bit), be converted to decimal data (Decimal Data), finally only filtering out can only the wavelength of movement of perception people.Numeral pir sensor does not comprise complicated OP-Amp loop and forms, so have the possibility of sensor miniaturization and wireless penetration.Such as, this motion sensor 110 obtains digital value after the change of sensed values is used 7 ~ 16ms cycle analysis.
Above temperature sensor 120 is also mounted in the parts of door, perception moving body temperature and perceive heat.This temperature sensor 120 also can use digital pir sensor to form, and the crowd with temperature sensing ability also can be used to know the sensor composition of variform.Motion sensor 110 and temperature sensor 120 can use the mode of numeral or simulating signal.
Above motion sensor 110 and temperature sensor 120 can modules of being integrally formed, and user can install it easily according to the difformity of door 10 (Gate).
Fig. 2 represents that the motion sensor of Fig. 1 and temperature sensor are arranged on the schematic diagram of the example in reveal face.Namely Fig. 2 is arranged on motion sensor 110 and temperature sensor 120 near door 10 side, at the schematic diagram of the example of lateral location perception discrepancy human body.Here motion sensor 110 and temperature sensor 120 are all that front respectively combines Fresnel lens F.Fresnel lens F can reduce the field-of-view angle of each motion sensor 110 and the field-of-view angle of temperature sensor 120, and improves the correctness of sensor, increases sensor capability.Except Fresnel lens F, the present invention also comprises the order making type window for filtering various pir sensor (i.e. motion pir sensor and temperature pir sensor).
Fig. 2 (a) is the front view of door 10, and after being equipped with Fresnel lens F, the above-below direction field-of-view angle of motion sensor 110 is adjusted to 50 °, and the above-below direction field-of-view angle of temperature sensor 120 is adjusted to 22 °.Fig. 2 (b) is the plan view of door 10, and after being equipped with Fresnel lens F, the fore-and-aft direction field-of-view angle of motion sensor 10 is adjusted to 10.9 °, and the fore-and-aft direction field-of-view angle of temperature sensor 120 is adjusted to 10.9 ° simultaneously.
If be not equipped with Fresnel lens F, above-below direction field-of-view angle is 90 °, and fore-and-aft direction field-of-view angle is 100 °, there is the shortcoming that the visual field is broad, perception is weak.
Above-mentioned control assembly 130 utilizes above-mentioned motion sensor 110 and temperature sensor 120 perception numerical value to the action initial point of the action initial point and temperature sensor 120 that control above-mentioned motion sensor 110, and then judge that moving body is to this direction of motion of 10 (such as IN direction, OUT direction).Here IN direction refers to that moving body to enter in door forward; OUT direction refers to the reverse direction (with reference to Fig. 1) that moving body is gone out outside door 10.
Technology in the past can only judge whether the level entered in door, namely use in motion sensor 110 or temperature sensor 120 any one carry out perception people and whether enter level in door, and the present invention's not only action initial point of controlled motion sensor 110 or action initial point of temperature sensor 120, and based on the sensing numerical value of each motion sensor 110 sensing numerical value arrived by this point observation and temperature sensor 120, directivity and the direction of motion of moving body can also be judged.
That is, the present invention goes out inverse gesture (OUT) direction outside door 10 or moving body for take advantage of a situation (IN) direction or moving body that moving body enters in door 10 and enters the Return-ing direction etc. of going out again outdoors in (passing through) door 10 and can easily hold.
If judged the direction of motion of moving body, easily can hold the total number of persons entered in door 10, go out total number of persons remaining in total number of persons outside door 10 or opposite house 10.Again by moving body for based on this direction of motion of 10, the quantity information entering or go out of moving body can be judged.
Such as Fig. 1, when moving body enters from the IN direction entered in door 10, is counted as+1; When moving body is gone out from the Out direction of going out door 10, be counted as-1.The number entered in door 10 (being counted as+1) is added with the number of going out outside door 10 (being counted as-1), automatically can calculates the interior remaining number of door this moment.
As above control assembly 130, can calculate the remaining moving body quantity existed in door 10.The situation of existence one or more or the situation of nobody in door can be detected exactly.As previously mentioned, when above control assembly 130 calculates moving body quantity in door, if moving body enters (IN) direction in door 10, be counted as+1, moving body goes out outer (OUT) direction of door 10, be counted as-1, thus correctly distinguish each direction of motion, and then calculate moving body quantity.
Wireless module 140 at least carries out Wireless transceiver in the count information about the moving body existed in the direct of travel of above-mentioned door moving body, the counting of catatrepsis body, the counting of reverse moving body and object space by external mechanical.External mechanical 200 belongs to by moving body direction of motion or enters or go out based on quantity, plays the application apparatus of original function.
Such as, external mechanical 200 refers to, when there are residue personnel in existing door 10, interior illuminator or control its lighting control unit, the demographic's assembly entering or go out in door per hour, when there is the disasters such as fiery residence, the module of taking precautions against natural calamities of indoor startup alarm or the measure of redemption life, when also having nothing residue personnel in present door, automatically cut off the Control Component of the supplies such as water, electricity, coal gas.This external mechanical 200 compares the technology of the present invention category and there is more various example.
As foregoing, the present invention is human body representatively example, the present invention also can detect the Infrared wavelength exhaled for the object carrying Infrared wavelength in addition, thus the action of perception moving body, the moving direction of tracking moving object, the count value easily detecting the moving body of space and space movement (when such as entering, counts+1; When going out, counting-1).Add in the present invention still more various necessity application software (electric light control, electric heater control, take precautions against invade, rescue take precautions against natural calamities, dump), also be the presence or absence being confirmed moving body (such as people) by above method of counting, therefore not only achieve control (switch of regulating object or control) various and correct in various applications, also can strengthen control ability.
Sensing waveform below about motion sensor 110 is understood in detail.Fig. 3 represents the structural representation of Fig. 1 motion sensor.Facility in order to illustrate in Fig. 3, eliminates temperature sensor 120 part, is equivalent to the view ((b) as Fig. 2) when looking squarely door 10.
With reference to Fig. 3, above-mentioned motion sensor 110 comprises: the first sensing core parts 111, second sensing core parts 112 and sensor body 113.First sensing core parts 111 are arranged on sensor body 113 place corresponding with the inlet point of door 10., and the second sensing core parts 112 are arranged on sensor body 113 puts corresponding place with the discrepancy of door 10.
For door 10, the direction of moving body from (a) to (c) movement, to pass through away from door 10 inlet point the direction a little entered again in door 10 corresponding with moving body; On the contrary, the direction of moving body from (c) to (a) movement, goes out a little corresponding through the direction that inlet point is gone out door 10 again with moving body from door 10.
Above-mentioned first sensing core parts 111 are used by the wavelength value perceived from moving body or the value of negative or positive is transmitted; Second sensing core parts 112 transmit the wavelength value that moving body perceives contrary just (the ascending wave long pass inductance value) of above first sensing core parts or negative (decline wavelength sensitive value) value.
Fig. 4 is the concept map of the 1st running example of the motion sensor sensing waveform of key diagram 3.Fig. 4 embodies: moving body after inlet point (or go out point), completely by this 10 " passing through waveform ".This figure and speed have nothing to do, detection be people when entering (IN) direction in door or go out (OUT) direction outdoors time wavelength.The length of the horizontal axis representing time of waveform, the longitudinal axis represents the wavelength value size that the time period detects.
As shown in Figure 4, when people enters IN direction in door 10, conform to the situation of Fig. 3 (a).Namely people start through move into one's husband's household upon marriage 10 inlet point time, first by the first sensing core parts 111 perception, the wavelength value at this moment detected is negative value.When (a) state that people enters Fig. 3 in process forwards (b) state to, first gradually increase of the wavelength size that the initial stage detects is reduced to 0 value again.
Then, in the IN direction drawing of Fig. 4, the waveform that (b) state of Fig. 3 is later is equivalent between the second sensing core parts 112 Perception Area, the wavelength value at this moment detected on the occasion of.When (b) state of Fig. 3 forwards (a) state to, first gradually increase of the wavelength size that the initial stage detects is reduced to 0 value again.People a little cannot detect wavelength value by going out of door 10 completely.
OUT direction is identical with the principle in above IN direction, and in Fig. 4, the waveform forwarding (b) state from Fig. 3 (c) state to is equivalent between the Perception Area of the second sensing core parts 112, waveform values detect on the occasion of.
Present invention uses the first sensing core parts 111 and the second sensing core parts 112, detect sensed values positive and negative respectively, thus easily judge the direction of motion of the people for door 10.For a simple example, if the waveform of motion sensor 110 from negative value convert on the occasion of, then represent that people is entered by the IN direction of door 10, otherwise then represent that OUT direction is passed through.
Fig. 5 is the concept map of motion sensor sensing waveform the 2nd running example of key diagram 3.The content that Fig. 5 represents is, have nothing to do with the speed of moving body, moving body is after inlet point (or go out point), again by going out point (or inlet point), and completely by door 10, again from " by front returning waveform " (with reference to Fig. 5 arrow) that inlet point (or go out point) returns.If consider the speed of moving body, the cycle of possible waveform can change or the degree of tilt of waveform can change.
Picture above Fig. 5 represents: moving body is through inlet point, after arriving door 10 central area, then return inlet point (corresponding with (a)-> (the b)-> (a) of Fig. 3).At this moment only have the first sensing core parts 111 perception, therefore can only observe the waveform of negative value.
On the contrary, in picture below Fig. 5, moving body passes through away point, after arriving the central area of door 10, when returning away point ((c)-> (the b)-> (c) of Fig. 3) again, only perceive the second sensing core parts 112, at this moment can only observe on the occasion of waveform.
Fig. 6 is the concept map of motion sensor sensing waveform the 3rd example of key diagram 3.The content that Fig. 6 represents is, have nothing to do with the speed of moving body, moving body is after inlet point (or go out point), again by going out point (or inlet point) completely by door 10, then return to inlet point (or go out point) " by after return waveform " (with reference to Fig. 6 arrow).
Picture above Fig. 6 represents: moving body successively through inlet point, door 10 central area, go out a little, then return inlet point (corresponding with Fig. 3 (a)-> (b)-> (c)-> (b)-> (a)).Picture below Fig. 6 represents: moving body successively through going out after point, door 10 central area, inlet point, then returns away point (corresponding with Fig. 3 (c)-> (b)-> (a)-> (b)-> (c)).
Illustrate in addition, when people stands in motion sensor 110 front for a long time, because the action of nobody, so do not detect waveform accordingly.That is, when people stands in before sensor for a long time, the wavelength value detected level off to 0 or waveform be lasting irregular shape.
As above shown in Fig. 4 to Fig. 6, as the principle of motion sensor 110, waveform when account for motion sensor 110 operates always, in actual motion example, control assembly 130 controls the action initial point of motion sensor 110.Fig. 4 to Fig. 6 also illustrates: detect the sensed values for whole wavelength, but in fact employ the value that filtrator detects any wavelength coverage (such as 7.5 ~ 13.5 μm), at this moment control assembly 130 can filter out any wavelength coverage (0 ~ 7.5 μm) value, and therefore inspection does not measure the value of this scope.
Fig. 7 is the concept map of the action initial point of the control assembly control sensor of key diagram 1.Below based on foregoing, describe the process of above control assembly 130 controlled motion sensor 110 and temperature sensor 120 in detail.
Above-mentioned control assembly 130 with visit 10 inlet point or point of going out, when moving body Infrared wavelength is perceived more than critical value for the first time (at t1 time point), the closedown (OFF) of opening (ON) and motion sensor 110 of start-up temperature sensor 120 controls the temperature of perception moving body.When during persistent surveillance temperature, moving body sense temperature drops to critical value again afterwards (at t2 time point), the opening of the closedown (OFF) of start-up temperature sensor 120 and motion sensor 110 (ON) carrys out secondary perception in inlet point or the Infrared wavelength of a moving body of going out.
Here perception Infrared wavelength refers to, wavelength (natural wavelength of people) more than critical value is perceived.The wavelength value that motion sensor 110 detects is or the numerical value of negative or positive.Above critical value can be defined as or the absolute value of numerical value of plus or minus.When moving body is behaved, critical value is equivalent to 9.5 μm.
The detailed annotation of Fig. 7 is as follows: first in the stage of first perception Infrared wavelength, can understand moving body whether first close to inlet point or point of going out from the symbol (plus or minus) of the wavelength value of perception.In the IN direction example of Fig. 7, the wavelength value that the initial stage detects is negative value, this numerical value because detecting at the t1 time point exceeding critical value, so can understand first close to inlet point.
When people is as above perceived t1 time point, stops motion sensor 110 and start-up temperature sensor 120, enter into and detect interval.Detect interval for this temperature, Fig. 7 graphically, is equivalent to the imaginary waveform of motion sensor 110 when carrying out above action.Namely after t1 time point, only utilize the temperature value of the sensing of temperature sensor 120 (being called for short " sensed values ").The temperature value of sensing just increases close to the center (such as people is more close to Fig. 3 (b) point) of door 10 people, more just reduces away from center (such as people more puts or (c) point close to (a) from (b) point).
Temperature sensing after t1 time point is interval, and perception drops to the t2 time point of critical value.When t2 time point is perceived time, visual is that people far goes (such as from Fig. 3 (b) point to (a) point or (c) point) at Li Men 10 center, control assembly 130 stops start-up temperature sensor 120, restarts the second time motion that motion sensor 110 carrys out perception people.That is, during secondary perception, can judge motion sensor 110 wavelength value as or plus or minus, and then judge that moving body returns inlet point or directly walks and have passed away point.Can understand in the IN direction example of Fig. 7, the wavelength value that secondary detects on the occasion of, become minimizing trend, and then can judge that people's secondary approach goes out point.
Above control assembly 130, for visit 10 inlet point or point of going out, when being perceived the numerical value of more than critical value for the first time (t1 time point), as previously mentioned start-up temperature sensor 120 open (ON) to control perception moving body temperature.If when the temperature of moving body exceedes arbitrary reference value, start the closedown (OFF) of above motion sensor 110.Explain to be exactly pass through on (t1+ α) time point of some times again at t1 time point, closing movement sensor 110 in more detail.
If this is because when temperature is no more than arbitrary reference value, not necessarily people is likely other moving body or wind.That is, in order to prior confirmation is people close to the object of door 10, giving the mistiming started between the closedown (OFF) of opening (ON) and motion sensor 110 of t1 time point temperature sensor 120O is α.
With reference to figure 5 and Fig. 6, for time shaft, with the critical value of wavelength for benchmark, left and right sides one timing point is respectively t1 time point, t2 time point, again as benchmark go controlled motion sensor 110 open ON action and closedown (OFF) action, temperature sensor 120 open ON action and closedown (OFF) action, and then prevent the current drain that continues.So combine the control assembly 130 of sleep (Sleep)/wake up (Awake) action, light relies on battery just can use the advantage of (comprising radio communication) several years.
According to example of the present invention, utilization can two sensors of control action initial point, not only right area is divided and is entered or go out the moving body in direction, can also count this, and difference control action initial point, thus noise jamming mutual between minimizing sensor and action error, also can minimize sensor power consumption.
Fig. 8 is the process flow diagram of the moving body discrepancy Numeration utilizing Fig. 1.Under regard to this explanation running example and utilize the discrepancy moving body technical method of multisensor to be described.
First, the Infrared wavelength utilizing the motion sensor 110 being arranged on door 10 to identify the moving body of introduction carrys out the existence (S810) of perception moving body.The temperature sensor 110 being arranged on door 10 is utilized to carry out perception moving body temperature (S820).
Above S810, S820 two steps are utilized to control the initial point of two sensor actuation.Control assembly 130 utilizes the numerical value of above motion 110 and temperature sensor 120 perception to control the action initial point of two sensors, and then the direction judging by this moving body, and calculated the moving body quantity (S830) in door by the direction of motion judged above.
When calculating moving body quantity in door, it is (IN) direction of taking advantage of a situation that moving body enters in door, is counted as+1; It is inverse gesture (OUT) direction outdoors that contrary moving body is gone out, and is counted as-1.That is, in S830 step, utilize the direction of motion of above moving body, IN and OUT count information can be obtained.
Afterwards, about with visit 10 moving body go out direction, catatrepsis body counting, reverse moving body counting and door in remain in the information (in door moving body quantity) of moving body quantity, at least one needs external mechanical 200 Wireless transceiver (S840) by above wireless module 140.
Fig. 9 is the detail flowchart of Fig. 8 in S830 step.Illustrate the moving body method of counting about example of the present invention below.
First, above control assembly 130 receives sensed values (S831) from each motion sensor 110 and temperature sensor 120.
Then, control the initial point of two sensor actuation according to the above sensed values received, and then judge above moving body direction of motion (S832).Illustrate before the control principle of action initial point, so omit detailed description.
First judge that above direction of motion is as (IN) direction or inverse (OUT) direction (S833) of taking advantage of a situation.If the direction of motion of moving body is to enter in door forward, be counted as+1 (S834); Contrary reverse direction, is counted as-1 (S835).
Afterwards, utilize control assembly more than 130 forward+counting and above reverse direction-counting, can obtain to visit in 10 remains moving body quantity (S836).The accumulated quantity in the above accumulated quantity forward individually utilizing S836 step, direction of driving in the wrong direction, also can obtain all directions moving body counting.According to this example above, the situation that has one or more and contrary, the i.e. situation of nobody correctly can be found out in door.
Figure 10 utilizes the direction of Fig. 1 and the detail flowchart of method of counting.Explain below in conjunction with Fig. 7, about above each sensor control action initial point, and then judge the process of direction of motion.
First, by the Infrared wavelength of the first perception moving body of motion sensor 110, the first direction of closing of perception (S910) then.This is corresponding with the t1 time point of Fig. 7.Namely when moving body is the IN direction of Fig. 7, the wavelength value that the initial stage detects is negative value, so can judge moving body for the first time close to the inlet point of door 10.This absolute value putting the wavelength value detected has exceeded the time point drafting critical value, is t1 time point.
Afterwards, start-up temperature sensor 120 open (ON) (S920), judge in the temperature value of temperature sensor, whether temperature changes (S930).If during temperature variation on the rise, can judge that temperature reaches the situation (S935) of reference value.If temperature reaches the reference value set, just can judge that moving body is behaved, and can go to next step, if not required moving body, then turn back to previous step.
If when temperature reaches reference value, then start the closedown (OFF) of motion sensor 110.If continue to read temperature sensing value, when arriving the human perception critical value of setting, just can enter temperature and detect interval (S940), can confirm between the time point (t1) opening (ON) of start-up temperature sensor 120 and the time point (t1+ α) of closedown (OFF) starting motion sensor 110 with this, exist and confirm that whether moving body is the time difference α of people.
Afterwards, judge whether the temperature value of sensing drops to critical value (S950).If above situation, can judge for people is away from door 10 centre, can the closedown (OFF) of start-up temperature sensor 120 and motion sensor 110 open (ON) (S960).S960 step is equivalent to the t2 time point of Fig. 7.The action of secondary perception people according to this.
Then judge whether motion sensor 110 has the change (S970) of downtrending wavelength value, this is the absolute value of the wavelength value perceived, the confirmation process of whether downtrending direction change.Afterwards, can judge the absolute value of wavelength value whether be positioned at critical value within (S975).Absolute value as wavelength can forward next step within being in critical value, if not within critical value, then turns back to previous step.
Are plus or minus according to the wavelength value of motion sensor 110, can judge whether moving body returns the inlet point detected for the first time, still move ahead have passed away point always.As shown in the IN direction of Fig. 7, if the wavelength that secondary detects be on the occasion of, within wavelength value reduces to critical value, people's secondary approach can be understood and go out point (S980).
Afterwards, control assembly 130 judges direction of motion and the count value of moving body, and transmits (S990) with wireless module 140.The data that control assembly 130 transmits are applicable in various application program as necessary data.
The following describes about example motion sensor 110 sensed values of the present invention calculating and determine the example of direction method (numeral).Above action is run by control assembly 130.
First, read from the every 16ms of motion sensor 110 sensed values being once equivalent to 14Bit and be converted to decimal data.At this moment, peripheral temperature with 25 DEG C for benchmark draw 8250 decimal data.The reference value correction of sensor utilizes peripheral temperature modification method.Such as, sensor body temperature utilizes reading environment temperature (AmbientTemperature) to revise reference value.
Continue above-mentioned item, calculating 16ms drew numerical value in the past and instantly drew the change of numerical value, only carried out filtration treatment to the change producing positive number (+) side, and then detected (+) changing value whether occurring being equivalent to people.At this moment, the noise range of motion sensor 110 numerical value is ± 3, if human perception can obtain ± the reaction of more than 3.
About the IN direction (Image to left of Fig. 7; Forward) and OUT direction (Image to right; Reverse direction) each time point, as follows with reference to " approach axis time point (initial stage perception time point) " near t1 interval: if the change numerical value of the past Shuo Zhi – numerical value instantly >=perception people before 16ms more than 30 (past numeric ratio instantly numerical value draws positive number greatly), belong to the situation that sensed values is reducing, be equivalent to above IN direction (Image to left).On the contrary, the change numerical value more than 30 (be instantly worth larger than past value and draw positive number) of the past numerical value >=perception people instantly before value-16ms, belongs to the situation that sensed values is increasing, is equivalent to above OUT direction (Image to right).
Also have about inlet point and go out human body " perception human body stop interval point (human sensing intersection time point) " (such as the large point between t1 time point and t2 time point) of a centre, method as the aforementioned, first determine initial stage approach axis, then find out by the perception of temperature the residence time that human body intersects with motion sensor.If when certain hour temperature starts to decline, the sensed values of again evicting motion sensor from comes perception human motion direction.
Then, as follows with reference to " go out direction point (last perception time point) " near the t2 time point interval of Fig. 7: if the change numerical value of the past numerical value-numerical value instantly >=perception people before 16ms more than 30 (past numeric ratio instantly numerical value draws positive number greatly), belong to the situation that sensed values is reducing, be equivalent to above IN direction (Image to left).On the contrary, the change numerical value more than 30 (be instantly worth larger than past value and draw positive number) of the past numerical value >=perception people instantly before value-16ms, belongs to the situation that sensed values is increasing, is equivalent to above OUT direction (Image to right).
Comprehensive above data, can draw following result: time forward, be counted as+1; During reverse direction, be counted as-1; Enter when returning again, be counted as 0, go out when returning again, be counted as 0.
Described below, the sensed values about temperature sensor 120 calculates and determines the example of direction method (numeral).This action is run by control assembly 130.
First, read from the every 7ms of temperature sensor 120 sensed values being once equivalent to 17Bit and be converted to decimal data.At this moment, peripheral temperature with 25 DEG C for benchmark draw 64500 denary number value.The now reference value correction of sensor utilizes peripheral temperature modification method.
Continue above-mentioned item, by the perception of motion sensor, determine moment (the t 1 time point) temperature value (A) that the initial stage of evicting from enters, then continue to evict from the 7ms cycle, finally large or equal than set point of temperature value time point is as the time point of human perception.Afterwards, start to evict the moment being worth little temperature value (B) than set point of temperature from, motion sensor 110 sensed values determine final direction again.At this moment, temperature value (A) in fact can perceive atomic little change, and the method therefore by filtering distinguishes the region of temperature rising value and drop-out value clearly.The noise range of the numerical value of temperature sensing 120 is ± 3, and when moving body is behaved, the change of temperature inspection range is more than 300.
Figure 11 represent according to running example of the present invention, utilize the come in and go out reality of counting assembly of multisensor to look into the schematic diagram of image.Figure 12 represents the decomposing schematic representation of Figure 11.Can be confirmed by figure, the central part of device discharges motion sensor 110 and temperature sensor 120 side by side.
According to above method of the present invention, from the position of two sensors, moving body normally carry out by, stop, the action such as to return time, the directional information irrelevant with speed can be perceived.And the present invention uses pir sensor merely before having broken away from, and in conjunction with the human perception sensing technology of timer, contain moving body kinesthesia tolerance, close directivity and by direction, return, stop the functions such as perception, can at the action route of full angle orientation, sensor front (angle of visibility is 10.9 degree) perception moving body.Therefore, under the change of moving body responsiveness, also can draw calculating data, these data are just being applicable to the fields such as small-sized, light weight, low electrification and widespread use.
Particularly the counting possessing access door space is come in and gone out personnel, or slype and particular space counting personal information, can provider tropism in the lump.Therefore based on it, utilize electric light control data, electric heater control data, prevent invading data, rescue is taken precautions against natural calamities by technology such as data, can be widely used in fields such as illumination, warning horn, air-conditioning, automobile, household appliances as utilization.
The present invention is with the example shown in drawing for reference to being illustrated, but this just citing, if know the technician of the art ABC, is just appreciated that and also can lifts other impartial example.And the technical protection scope that the present invention is real, should be determined by the technological thought of appended patent claim.
Claims (18)
1. utilize a discrepancy counting assembly for multisensor, it is characterized in that, the described discrepancy counting assembly of multisensor that utilizes comprises:
Be arranged on door, carried out the motion sensor of perception moving body existence by the Infrared wavelength of the moving body identifying introduction;
Be arranged on the temperature sensor of door, perception moving body temperature;
Control assembly, control assembly utilizes the numerical value of above motion sensor and the perception of temperature sensor institute to control the initial point of two sensor actuation, and then judge the direction of the moving body by this, and calculating indoor moving body quantity by the direction judged above, this device is the discrepancy moving body counting assembly utilizing multisensor comprising control assembly.
2. the discrepancy counting assembly utilizing multisensor according to claim 1, is characterized in that, the rule that described control assembly calculates indoor moving body quantity is as follows: it is forward that moving body enters in door, is counted as+1; Moving body inlet/outlet is outward reverse, is counted as-1.
3. the discrepancy counting assembly utilizing multisensor according to claim 2, it is characterized in that, the described discrepancy counting assembly of multisensor that utilizes also comprises wireless module, and wireless module at least carries out Wireless transceiver in the count information about the moving body existed in the direct of travel of above-mentioned door moving body, the counting of catatrepsis body, the counting of reverse moving body and object space by external mechanical.
4. the discrepancy counting assembly utilizing multisensor according to claim 1, it is characterized in that, the control principle of described control assembly is as follows: when some moving body Infrared wavelength of coming in and going out is perceived for the first time, opening start-up temperature sensor with the closedown of motion sensor to control the moving body temperature of perception, afterwards within moving body temperature drops to critical value, the secondary perception of opening of the closedown of start-up temperature sensor and motion sensor is come in and gone out the Infrared wavelength of some moving body.
5. the discrepancy counting assembly utilizing multisensor according to claim 4, is characterized in that, described control assembly come in and go out point perceive the wavelength of moving body at first after immediately start-up temperature sensor open perception moving body temperature; As moving body temperature exceedes arbitrary reference value, then start the closedown of motion sensor.
6. the discrepancy counting assembly utilizing multisensor according to claim 4, it is characterized in that, described motion sensor refers to sensor body, motion sensor comprises and is arranged in sensor body, be arranged on inlet point, the wavelength value that perceives from moving body with or the first sensing core parts of transmitting of the value of negative or positive, and be arranged in sensor body, be arranged on the part that entry and exit point is corresponding, the second sensing core parts that the wavelength value that moving body perceives is transmitted by the plus or minus value that above first sensing core parts are contrary, first sensing core parts and the second sensing core parts are two core parts of the discrepancy counting assembly utilizing multisensor.
7. the discrepancy counting assembly utilizing multisensor according to claim 1, is characterized in that, described motion sensor and temperature sensor are all that front is in conjunction with Fresnel camera lens.
8. the discrepancy counting assembly utilizing multisensor according to claim 1, is characterized in that, described motion sensor and temperature sensor are respectively motion pir sensor and temperature pir sensor.
9. the discrepancy counting assembly utilizing multisensor according to claim 1, is characterized in that, a module of described motion sensor and being integrally formed of temperature sensor.
10. utilize a discrepancy method of counting for multisensor, it is characterized in that, the described discrepancy method of counting of multisensor that utilizes comprises the following steps:
By the step utilizing the Infrared wavelength of the motion sensor identification moving body being arranged on point of coming in and going out to carry out the existence of perception moving body;
Utilize the step of the temperature sensor perception moving body temperature being arranged on point of coming in and going out;
And, control assembly utilizes the numerical value of motion sensor and the perception of temperature sensor institute to come the action initial point of controlled motion sensor and the action initial point of temperature sensor, and then judge the direction of motion of moving body to this, and calculate the step of indoor moving body quantity by the direction of motion judged above.
The 11. discrepancy method of counting utilizing multisensor according to claim 10, is characterized in that, the step of the indoor moving body quantity of described calculating comprises: if it is forward that moving body enters in door, be counted as+1; Moving body inlet/outlet is reverse direction outward, is counted as-1.
The 12. discrepancy method of counting utilizing multisensor according to claim 11, is characterized in that, described in catatrepsis body counting, reverse moving body counting, object space moving body quantity, at least one needs the step of externally machine Wireless transceiver.
The 13. discrepancy method of counting utilizing multisensor according to claim 10, it is characterized in that, the step of described judgement moving body direction of motion comprises the following steps: when moving body Infrared wavelength of coming in and going out is perceived for the first time, opening start-up temperature sensor with the closedown of motion sensor to control the step of the moving body temperature of perception; Afterwards within moving body temperature drops to critical value, the secondary perception of opening of the closedown of start-up temperature sensor and motion sensor is come in and gone out the step of Infrared wavelength of some moving body.
The 14. discrepancy method of counting utilizing multisensor according to claim 13, is characterized in that, described control assembly come in and go out point perceive the wavelength of moving body at first after immediately start-up temperature sensor open perception moving body temperature; As moving body temperature exceedes arbitrary reference value, then start the closedown of motion sensor.
The 15. discrepancy method of counting utilizing multisensor according to claim 13, it is characterized in that, described motion sensor refers to sensor body, motion sensor comprises and is arranged in sensor body, be arranged on inlet point, the wavelength value that perceives from moving body with or the first sensing core parts of transmitting of the value of negative or positive, and be arranged in sensor body, be arranged on the part that entry and exit point is corresponding, the second sensing core parts that the wavelength value that moving body perceives is transmitted by the plus or minus value that above first sensing core parts are contrary, first sensing core parts and the second sensing core parts are two core parts of the discrepancy method of counting utilizing multisensor.
The 16. discrepancy method of counting utilizing multisensor according to claim 10, is characterized in that, described motion sensor and temperature sensor are all that front is in conjunction with Fresnel camera lens.
The 17. discrepancy method of counting utilizing multisensor according to claim 10, it is characterized in that, described motion sensor and temperature sensor are respectively motion pir sensor and temperature pir sensor.
The 18. discrepancy method of counting utilizing multisensor according to claim 10, is characterized in that, a module of described motion sensor and being integrally formed of temperature sensor.
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| KR1020120101621A KR101211121B1 (en) | 2012-09-13 | 2012-09-13 | Apparatus for counting in and out using sensors and method for thereof |
| KR10-2012-0101621 | 2012-09-13 | ||
| PCT/KR2013/008087 WO2014042393A1 (en) | 2012-09-13 | 2013-09-06 | Device and method for counting entrance/exit by using multiple sensors |
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| CN104756159B (en) | 2017-10-20 |
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