KR101211121B1 - Apparatus for counting in and out using sensors and method for thereof - Google Patents

Abstract

PURPOSE: An apparatus and a method for counting entrance and exit using multi-sensor are provided to obtain counting information of a moving body existed inside the gate. CONSTITUTION: An apparatus for counting entrance and exit comprises a movement sensor(110), a temperature sensor(120), and a controller(130). A movement sensor installed at the gate senses the existence of a moving body from the entrancing point of a gate by sensing the ultraviolet ray wavelength of a moving body passing through the gate. A temperature sensor installed at the gate senses the temperature of a moving body. A controller controls the movement time of a movement sensor and a temperature sensor using the sensing value of a movement sensor and a temperature sensor. A controller determines direction of a moving body and counts the number of moving bodies which are existed inside the gate by the determined progressive directions. [Reference numerals] (100) Direction and count data transmission; (110) Movement sensor; (120) Temperature sensor; (130) Controller; (140) Wireless module; (200) External device; (AA) IN direction; (BB) OUT direction

Description

Apparatus for counting in and out using sensors and method for

The present invention relates to an access counting device and a method using multiple sensors, and more particularly, the moving direction and the number of accesses of the fuselage can be counted using the infrared ray wavelength and the sensing temperature of the fuselage with a certain amount of infrared rays. An access counting device and method using multiple sensors.

In general, a PIR sensor (Pyroelectric Infrared Sensor) is a sensor that detects the movement of an infrared ray object at a certain distance, and detects a wavelength band of about 7.5 to 13.5 μm based on the human body's temperature of 36.5 degrees.

On the surface of the sensor there is a filter, which strongly passes the wavelength band required by the sensor and the rest inhibits passage. The waveform passed through the filter is evicted / amplified by an internal sense / amplifier (FET). Therefore, the sensor detects the movement of an object with a certain amount of infrared rays and outputs it. If there is no movement, the sensor does not output.

Currently, such sensing technology is generally applied to lighting, alarms, air conditioners, automobiles, home appliances, and the like, and is particularly used in the automatic opening / closing door, automatic lighting, and security fields.

The technology related to the automatic lighting is disclosed in Korean Patent Publication No. 1996-0016640. This is a room light blinking control device to allow the indoor light to be turned on when a state of entering a person in the target space is detected, and the illuminated indoor light is automatically turned off if a state of entering a person is not detected after a predetermined time elapses. However, such a conventional technology is only to determine the presence of an infrared ray object, and can not provide a function of detecting the direction of the object or counting the object at all, and thus has a very narrow and limited application range. have.

In general, there are various electronic devices that operate as electric sources in the target space. Such an electronic device needs to be cut off when there is no person in the target space. The purpose of the power cut-off is to reduce the waste of power energy and to prevent human and physical accidents by preventing accidents (ex, overheating, fire, explosion) due to the malfunction of the equipment which can occur when no people exist. It is to reduce. However, in the prior art, it merely detects the motion of a person, and the person cannot determine the direction of entering or exiting the internal space through the gate, so that one or more people exist in the target space. It does not provide the ability to accurately detect cases and cases where there are no people.

To date, most human body detection circuits employing PIR sensors are mainly composed of analog digital converters (ADCs). The ADC converts the analog signal into a digital signal, which is also important as the ADC itself. However, in order to make the analog signal near the original signal or create a good condition for the ADC before the ADC operation, the conventional op-amp Amplify or filter the signal using.

In general, the processing of the analog signal by op-amp is mainly amplification, filtering to remove noise, etc., but its configuration is very complicated and is not suitable for forming a low current circuit, and it is easy to identify the human body. There is a disadvantage that it is impossible to obtain the count data of the human body based on the direction and the movement according to the human body movement.

This is very difficult to obtain direction data due to considerable noise, environmental variables, temperature and sunlight disturbances, and it is more difficult to detect the direction, especially when a person stays and moves in a random direction after a certain time. Related to In addition, this is related to the characteristics of the existing PIR sensors because when the human body continues to obtain the wavelength of the human body changes, but if the human body remains static without movement, the wavelength is quickly disappeared, it is difficult to detect.

The present invention is an access counting apparatus and method using multiple sensors that can determine the presence of the fuselage, as well as the direction of the fuselage with respect to the gate using the gated motion sensor and the temperature sensor and count the number of entrances and exits accordingly. The purpose is to provide.

The present invention is installed on the gate, the motion sensor for detecting the presence of the body at the entry or exit point of the gate by recognizing the infrared wavelength of the body passing through the gate, and installed in the gate, the temperature of the body Determining a moving direction of the fuselage with respect to the gate by controlling an operation time point of the motion sensor and the temperature sensor using a temperature sensor for detecting a motion signal, and a detected value of the motion sensor and the temperature sensor. A body access counting apparatus using multiple sensors including a control unit for counting the number of bodies existing in a target space inside the gate through a direction.

Here, when counting the number of fuselage existing in the target space, the controller counts +1 if the fuselage is in a forward direction entering the target space inside the gate, and the fuselage is outside the gate in the target space. You can count -1 in the backward direction toward.

Here, the fuselage access count device using the multiple sensors, the moving direction of the fuselage with respect to the gate, the count number of the fuselage corresponding to the forward direction, the count number of the fuselage corresponding to the backward direction, and the target space The apparatus may further include a wireless module for wirelessly transmitting at least one of information on the number of existing bodies to an external device.

In addition, when the infrared wavelength of the fuselage is first detected at the entry or exit point of the gate, the controller controls the sensor to sense the temperature of the fuselage by turning on the temperature sensor and driving off the motion sensor. When the temperature falls below the threshold again, the temperature sensor may be driven off and the motion sensor may be driven on to control the infrared wavelength of the fuselage to be secondarily detected at the entry or exit point.

Here, when the infrared wavelength of the fuselage is first detected at the entry or exit point of the gate, the controller controls the sensor to sense the temperature of the fuselage by turning on the temperature sensor, but when the temperature of the fuselage exceeds an arbitrary reference value. The motion sensor may be driven off.

The motion sensor may include a sensor main body and a first sensing core provided at a portion of the sensor main body corresponding to an entry point of the gate and providing a wavelength value detected from the body as a negative or positive value, and The sensor body may include a second sensing core provided at a portion corresponding to the exit point of the gate and providing a wavelength value detected from the body as a positive or negative value opposite to the first sensing core. .

In addition, the motion sensor and the temperature sensor, the Fresnel lens may be coupled to the front, respectively. In addition, the motion sensor and the temperature sensor may be a motion PIR (Pyroelectric Infrared) sensor and a temperature PIR sensor, respectively.

In addition, the motion sensor and the temperature sensor may be integrated into one module.

In addition, the present invention detects the presence of the body at the entry or exit point of the gate by recognizing the infrared wavelength of the body passing through the gate using a motion sensor installed in the gate, and the temperature installed on the gate Sensing the temperature of the fuselage using a sensor; and controlling an operation time point of the motion sensor and the temperature sensor by using the detected values of the motion sensor and the temperature sensor to determine a moving direction of the fuselage with respect to the gate. After the determination, the number of moving body access counting method using the multiple sensors comprising the step of counting the number of the body existing in the target space inside the gate through the determined progress direction.

Here, the counting of the number of fuselage present in the target space includes counting +1 if the fuselage is in a forward direction entering the target space inside the gate, and the retrograde from which the fuselage exits from the target space to the outside of the gate. Direction, -1 can be counted.

The moving body access counting method using the multiple sensors may include a moving direction of the moving body with respect to the gate, a count number of the moving body corresponding to the forward direction, a counting number of the moving body corresponding to the backward direction, and the target space. The method may further include wirelessly transmitting at least one of information on the number of existing bodies to an external device.

The determining of the moving direction of the fuselage may include: when the infrared wavelength of the fuselage is first detected at the entry or exit point of the gate, driving the temperature sensor on and driving the motion sensor off to sense the temperature of the fuselage; And driving the temperature sensor off and driving the motion sensor on when the temperature of the fuselage falls below the threshold again to detect the infrared wavelength of the fuselage at the entry or exit point secondary. It may include.

According to the entry and exit counting apparatus and method using multiple sensors according to the present invention, it is possible to determine the presence of the fuselage using the motion sensor and the temperature sensor installed in the gate portion, and to determine the moving direction of the fuselage with respect to the gate. As a result, it is possible to obtain count information about the body existing in the target space inside the gate, which can be usefully used for various applications requiring the same.

1 is a block diagram of a fuselage access count apparatus using multiple sensors according to an embodiment of the present invention.
FIG. 2 shows an example in which the motion sensor and the temperature sensor of FIG. 1 are installed on the side of the gate.
3 illustrates a configuration of the motion sensor of FIG. 1.
4 to 6 are conceptual views illustrating first to third embodiments of sensing waveforms by the motion sensor of FIG. 3.
FIG. 7 is a conceptual diagram illustrating an operation time control of a sensor by the controller of FIG. 1.
8A is a flowchart of a fuselage access count method using FIG. 1.
FIG. 8B is a detailed flowchart of step S830 of FIG. 8A.
9 is a detailed flowchart of a direction and count data acquisition method using FIG. 1.
10 is a photo-realistic image of an entrance counting device using multiple sensors according to an exemplary embodiment of the present invention.
11 is an exploded perspective view of FIG. 10.

DETAILED DESCRIPTION Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art may easily implement the present invention.

1 is a block diagram of a fuselage access count apparatus using multiple sensors according to an embodiment of the present invention. The access counting device 100 includes a motion sensor 110, a temperature sensor 120, a controller 130, and a wireless module 140.

The motion sensor 110 and the temperature sensor 120 are installed at a gate portion 10 that allows the body to enter and exit. For example, the motion sensor 110 and the temperature sensor 120 may be installed on the top or side surfaces of the gate 10.

Here, the gate 10 is irrelevant as long as the body can pass through, and does not distinguish between having a door and not having a door. In addition, the body may be any object containing a unique infrared wavelength. In other words, the fuselage is a concept encompassing humans, animals (ex, dogs), and various means of transportation (ex, automobiles) that emit infrared wavelengths. Hereinafter, for convenience of description, the case of the human body (human body) will be described as an embodiment.

The motion sensor 110 may be implemented as a PIR (Pyroelectric Infrared) sensor to which multiple FETs are applied. The motion sensor 110 recognizes an infrared wavelength of the body passing through the gate 10 so that the motion sensor 110 may enter or exit the gate 10. Detect the presence of fuselage That is, the motion sensor 110 detects an infrared ray emitted from the body (ex, an infrared wavelength of about 7.5-13.5 μm based on a human body temperature (36.5 degrees)) to recognize the body.

The motion sensor 110 is implemented as a digital PIR sensor, detects the size of the detected wavelength, which is a motion detection value, as binary data bits of 14 bits, and converts it into decimal data. Wavelength filtering detects only human movement. Digital PIR sensors do not include complex OP-Amp circuit configurations, which allows the miniaturization and wirelessization of the sensor. For example, the motion sensor 110 may acquire the digital value by analyzing the variation of the detected value every 7 to 16 ms.

The temperature sensor 120 is installed at the gate to detect the temperature of the body, that is, heat. The temperature sensor 120 may also be implemented as a digital PIR sensor and may be implemented by various types of known sensors capable of sensing temperature. Of course, the motion sensor 110 and the temperature sensor 120 may be implemented in a digital or analog type.

In addition, the motion sensor 110 and the temperature sensor 120 may be integrated and implemented as a single module, and according to the shape of the gate 10, the user may conveniently install the integrated module.

FIG. 2 shows an example in which the motion sensor and the temperature sensor of FIG. 1 are installed on the side of the gate. 2 illustrates an example in which the motion sensor 110 and the temperature sensor 120 are disposed near the side of the gate 10 to detect a person passing through the gate 10 from the side. Here, the Fresnel lens F is coupled to the front of the motion sensor 110 and the temperature sensor 120, respectively. The Fresnel lens F narrows the viewing angles of the sensors 110 and 120 to increase the accuracy of sensing and the sensing ability. In addition to the Fresnel lens F, the present invention includes a customized window for filtering each PIR sensor, namely a motion PIR sensor and a temperature PIR sensor.

FIG. 2A is a front view of the gate 10. When the Fresnel lens F is mounted, the vertical viewing angle of the motion sensor 110 is 50 °, and the vertical viewing angle of the temperature sensor 120 is 22 °. Adjusted to °. FIG. 2B is a plan view of the gate 10. When the Fresnel F lens is mounted, the forward and backward viewing angle of the motion sensor 110 is adjusted to 10.9 °, and the forward and backward viewing angle of the temperature sensor 120 is shown. Is equally adjusted to 10.9 °.

If the Frisnel lens F is not mounted, the vertical viewing angle is 90 °, the viewing angle is 100 °, and the viewing angle is very wide and the sensing ability is poor.

The controller 130 controls an operation time point of the motion sensor 110 and the temperature sensor 120 by using the detected values of the motion sensor 110 and the temperature sensor 120, so as to control the gate 10. The moving direction of the body (ex, In direction, Out direction) is determined. Here, the In direction means a forward direction in which the body enters the object space inside the gate 10, and the Out direction means a backward direction in which the body exits from the object space to the outside of the gate 10 (see FIG. 1).

Conventionally, by applying only one of the motion sensor 110 or the temperature sensor 120 is limited to the level of technology that detects only a person entering the target space, the present invention is a motion sensor 110 and the temperature sensor ( In addition to the control of the operation time of the 120, based on the sensing values of the sensors 110 and 120 observed at the corresponding time, the direction of the body, that is, the direction of travel may be determined.

That is, according to the present invention, whether the fuselage is in the forward direction (In) to the target space inside the gate (10), the backward direction out of the gate (10) from the target space, or the fuselage is the object in the gate 10 It's easy to see if it's the return direction as it enters (passes) the space.

Here, when the moving direction of the fuselage is determined, the total number of persons entering the target space inside the gate 10, the total number of persons leaving the gate 10, or the current target space inside the gate 10 remains in the target space. The total number of people present can also be easily identified. That is, the controller 130 may further determine not only the moving direction of the fuselage with respect to the gate 10, but also information regarding the number of entrances or exits of the fuselable body that can be counted based on this.

For example, as shown in FIG. 1, when the body enters the IN direction toward the inside of the gate 10, a + count may be performed, and − count when the body enters the Out direction toward the outside of the gate 10. Of course, when the number of people (+ count value) exiting the gate 10 is added from the number of people entering the internal space of the gate 10 (+ count value), the residuals that enter the gate 10 and exist in the current target space are added. The number of people can be calculated automatically.

As described above, the controller 130 may count the number of remaining bodies in the object space inside the gate 10. Therefore, it is possible to accurately detect the case where one or more persons exist in the object space and the case where no persons exist. In addition, as described above, when the number of the fuselage existing in the target space is counted, the controller 130 counts +1 if the fuselage enters the target space inside the gate 10 and the fuselage is moved. If the direction of the outgoing direction (Out) to the outside of the gate 10 in the target space is counted to -1, it is possible to accurately count the body corresponding to each travel direction.

The wireless module 140 may include a moving direction of the fuselage with respect to the gate 10, a count number of the fuselage corresponding to the forward direction, a count number of the fuselage corresponding to the backward direction, and a fuselage existing in the target space. At least one of the information on the number of wirelessly transmits to the external device. The external device 200 may correspond to an application device capable of expressing its original function based on the moving direction or the number of entry or exit of the body.

For example, the external device 200 is a lighting device that illuminates a lamp in a room, or a lighting control module for controlling the light, when there is a residual person currently present in the target space inside the gate 10, entering or entering the target space per hour. Statistics module that calculates the statistics of the number of people to be told, Disaster prevention module that controls alarm or lifesaving to the target space where the current remaining personnel exists, and when there is no remaining personnel in the current target space. It may correspond to a control module that automatically cuts off the supply of water, gas, electricity, and the like. Of course, the external device 200 may have more various examples within the technical scope of the present invention.

As described above, the present invention is a representative example of the human body, but in addition, the present invention detects an infrared wavelength emitted by a target containing an inherent infrared wavelength, and detects movement as well as tracking a moving direction of the fuselage from space to space. The count value of the moving body (ex, + count on entering,-count on entering) can be easily detected. Furthermore, the present invention allows the presence or absence of a fuselage (ex, person) to be counted for various applications (light control, heater control, crime prevention, life-saving disaster prevention, electric shut-off, power cut-off) that require this, This enables a variety of accurate controls (on or off adjustments) in various applications and increases control.

Hereinafter, the sensing waveform by the motion sensor 110 will be described in detail. 3 illustrates a configuration of the motion sensor of FIG. 1. 3 is a view showing the temperature sensor 120 omitted for convenience of description, and corresponds to a shape (corresponding to FIG. 2B) of the gate 10 in plan view.

Referring to FIG. 3, the motion sensor 110 includes a first sensing core 111, a second sensing core 112, and a sensor body 113. The first sensing core 111 is provided at a portion corresponding to the entry point of the gate 10 in the sensor body 113, and on the contrary, the second sensing core 112 enters the gate 10 in the sensor body 113. It is confirmed that it is provided in the part corresponding to a point.

Here, the movement of the fuselage from (a) to (c) with respect to the gate 10 corresponds to the direction in which the fuselage enters the object space inside the gate 10 through the entry point and the exit point of the gate 10. . In contrast, the movement of the fuselage from (c) to (a) corresponds to the direction in which the fuselage exits the gate 10 through the entry point and the entry point of the gate 10 in turn.

The first sensing core 111 provides a negative or positive value of a wavelength detected by the fuselage. In addition, the second sensing core 112 may convert the wavelength value detected from the body to a value of a positive value (a sensing value of a rising wavelength) or a negative (a sensing value of a falling wavelength) opposite to the first sensing core 111. to provide.

4 is a conceptual diagram illustrating a first embodiment of a sensing waveform by the motion sensor of FIG. 3. 4 shows a 'pass waveform' where the fuselage passes through the entry point (or entry point) and then completely passes through the gate 10 through the entry point (or entry point). 4 is a waveform measured when a person passes through the gate in an IN direction or an OUT direction regardless of the speed. The horizontal axis of the waveform means time flow and the vertical axis means the magnitude of the detected wavelength value over time.

Referring to the IN direction, in which the person enters the gate 10 in FIG. 4, the sensing by the first sensing core 111 while the person starts to pass through the entry point of the gate 10 as shown in FIG. Since this occurs first, the detected wavelength value is detected as a negative value. Here, in the process of going from the state (a) of FIG. 3 to the state (b) of FIG. 3, the absolute magnitude of the detected wavelength gradually increases and then decreases to zero.

Next, when the waveform corresponding to the state after FIG. 3B is shown in the IN direction of FIG. 4, the wavelength detected by the second sensing core 112 is a period in which the detected wavelength value is detected as a positive value. do. Here, in the process of going from the state (b) of FIG. 3 to the state (c), the absolute magnitude of the detected wavelength gradually increases and then decreases to zero again. Once a person has completely passed through the exit point of the gate 10, the wavelength value is not detected.

In the case of the OUT direction also has the same principle as the IN direction, as shown in the waveforms from FIG. 4 to (c) to (b) in FIG. 4, the sensing by the second sensing core 112 is performed. When the wavelength value is detected as a positive value, and then the waveforms from (b) to (a) state are detected, the wavelength value is detected as a negative value again because the sensing is performed by the first sensing core 111.

In the present invention, the sensing direction of the person with respect to the gate 10 can be easily known by separately detecting the sensing values as the positive and negative values using the two sensing cores 111 and 112. For a simple example, if the waveform of the motion sensor 110 is initially converted to a positive value after having a negative value, it may mean that a person has passed the gate 10 in the IN direction, and vice versa. It may mean that it has passed in the OUT direction.

FIG. 5 is a conceptual diagram illustrating a second embodiment of a sensing waveform by the motion sensor of FIG. 3. 5 shows that the fuselage passes through the entry point (or entry point) and then returns back to the entry point (or entry point) without completely passing through the gate 10 through the entry point (or entry point) regardless of the speed of the fuselage. It shows the 'before passing return waveform' (see arrow in FIG. 5). Of course, when considering the speed of the fuselage, the period of the waveform may be changed or the slope of the waveform may be modified.

5 shows a case in which the fuselage passes through the entry point and reaches the center region of the gate 10 and then exits the entry point again (corresponding to the process (a)-> (b)-> (a) in FIG. 3). As only the sensing by the first sensing core 111 is made, only a waveform composed of negative values is observed.

On the contrary, the lower figure of FIG. 5 shows a case in which the fuselage passes through the exit point and reaches the center region of the gate 10 and then again exits the exit point ((c)-> (b)-> (c) in FIG. 3). Corresponding), since only the sensing by the second sensing core 112 is performed, only a waveform composed of positive values is observed.

6 is a conceptual diagram illustrating a third embodiment of a sensing waveform by the motion sensor of FIG. 3. 6 shows that the fuselage passes through the entry point (or entry point) after passing through the gate 10 through the entry point (or entry point), and then back to the entry point (or entry point) regardless of the speed of the fuselage. 'Post-pass return waveform' (see arrow in FIG. 6).

 The upper figure of FIG. 6 shows a case in which the fuselage passes back through the entry point and the center area of the gate 10 and the exit point, and returns from the entry point again ((a)-> (b)-> (c)-> ( b)-> (a) corresponding to the process), and the figure below shows the case where the fuselage passes through the exit point and the center area of the gate 10 and the entry point again and exits the exit point again ((c)-> ( b)-> (a)-> (b)-> (c)).

As another example, if a person stays in front of the motion sensor 110 and stands continuously, there will be no waveform detected since there is no human motion. That is, while the person stays in front of the sensor, the detected wavelength value will be close to zero or the meaningless waveform will continue irregularly.

4 to 6 as described above correspond to a waveform when the motion sensor 110 is always operated to explain the principle of the motion sensor 110. In an exemplary embodiment, an operation time of the motion sensor 110 is controlled. It should be understood that it is controlled by 130. In addition, although FIG. 4 to FIG. 6 are shown to detect sensing values of all wavelengths, in practice, it may be implemented by detecting only an arbitrary wavelength range (ex, 7.5 to 13.5 μm) using a filter. Unlike the one, the controller 130 filters the values in the wavelength range from 0 to 7.5 μm.

FIG. 7 is a conceptual diagram illustrating an operation time control of a sensor by the controller of FIG. 1. Hereinafter, a process of controlling the operation time of the motion sensor 110 and the temperature sensor 120 by the controller 130 will be described in detail based on the above description.

The controller 130 drives the temperature sensor 120 on and moves when the infrared wavelength of the body is first detected (first time) above a threshold at the entry or exit point of the gate 10 (a time point t1). The sensor 110 is controlled to sense the temperature of the fuselage by driving the sensor 110 off. Thereafter, if the sensing temperature of the fuselage falls below the threshold again during the temperature monitoring (at time t2), the temperature sensor 120 is driven off and the motion sensor 110 is driven on to drive the fuselage at the entry or exit point. Detects the infrared wavelength of the secondary.

Here, the sensing of the infrared wavelength means that a wavelength above a threshold value (equivalent to a natural wavelength of a person) is detected. The wavelength value detected by the motion sensor 110 has a negative or positive value. Therefore, the threshold may be defined as the absolute value of the positive or negative wavelength value. This threshold may correspond to 9.5 μm when the body is human.

Referring to the process of Figure 7 in more detail as follows. In the first step of detecting the infrared wavelength, the sign (positive or negative) of the detected wavelength value indicates whether the fuselage first approaches the entry point or the exit point. Referring to the example of the IN direction in FIG. 7, it can be seen that since the initial detected wavelength value is a negative value and a time point t1 at which the negative value exceeds a threshold is detected, a person approaches the entry point first. .

When a person is detected (t1), the movement of the motion sensor 110 is stopped and the temperature sensor 120 is operated to enter the temperature detection section. Although the waveform is shown in FIG. 7 for this temperature detection section, this corresponds to a virtual waveform for the case in which the motion sensor 110 is always operated. That is, after the time t1, only the sensing value of the temperature sensor 120 is used. The sensed temperature value increases as a person approaches the center of the gate 10 (ex, as a person approaches the point (b) of FIG. 3), and as the person moves away from the center of the gate 10 (ex And gradually decrease toward the point (a) or (c) from the point (b) of FIG.

Therefore, in the temperature sensing section after t1, a time point t2 at which the temperature value falls below the threshold is detected. When the time point t2 is sensed, a person is regarded as being far away from the center of the gate 10 (ex, toward the point (a) or (c) from the point (b) of FIG. 3), and the controller 130 controls the temperature. The sensor 120 is stopped and the motion sensor 110 is restarted to detect the movement of the person second. That is, in the second detection, it is also possible to determine whether the fuselage has returned to the entry point or passed straight through the entry point by determining whether the wavelength value of the motion sensor 110 is positive or negative. Referring to the example of the IN direction in FIG. 7, it can be seen that the second approached the approaching point because the wavelength detected as the secondary decreases with a positive value.

However, when the infrared wavelength of the fuselage is first detected at a value greater than or equal to a threshold value at a point of entry or exit to the gate 10 (time t1), the controller 130 turns on the temperature sensor 120 as described above. By controlling to drive to sense the temperature of the fuselage, and to drive off the motion sensor 110 only when the temperature of the fuselage exceeds any reference value. Therefore, in more detail, the motion sensor 110 is turned off at the time t1 + (alpha) a little later than the time t1.

This is because if the temperature does not exceed any reference value, it may be the case when a non-human object or wind approaches. That is, in order to confirm in advance whether the object of access to the gate 10 is a person, a time difference of α is provided between the on driving of the temperature sensor 120 and the off driving of the motion sensor 110 at a time t1.

For reference, in the case of FIGS. 5 to 6, time points t1 and t2 are applied to the left and right predetermined points based on the threshold value of the wavelength with respect to the time axis. This prevents the continuous consumption of current. As described above, the controller 130 applying the sleep / awake operation has an advantage of using the battery for several years, including wireless communication.

According to the embodiment of the present invention as described above, not only can accurately count the fuselage in the entry or exit direction by using two sensors whose operation time is controlled, but also control the operation time differently, It can reduce noise interference and consequent operational errors and minimize sensor power dissipation.

8A is a flowchart of a fuselage access count method using FIG. 1. Hereinafter, a description will be given of the fuselage access count method using multiple sensors according to an embodiment of the present invention.

First, by detecting the infrared wavelength of the body passing through the gate 10 using the motion sensor 110 installed in the gate 10 to detect the presence of the body at the entry or exit point of the gate 10. (S810). In addition, the temperature of the body is sensed using the temperature sensor 120 installed in the gate 10 (S820).

Herein, in operation S810 and operation S820, an operation time point must be controlled. To this end, the controller 130 controls the operation time of the motion sensor 110 and the temperature sensor 120 by using the detection values of the motion sensor 110 and the temperature sensor 120 to control the gate ( After determining the moving direction of the fuselage for 10), the number of remaining fuselages existing in the target space inside the gate is counted through the determined moving direction (S830).

Here, when counting the number of remaining bodies present in the target space, +1 is counted if the fuselage enters the target space inside the gate 10 and, on the contrary, the body is gated in the target space. (10) Count -1 in the outward direction. That is, in step S830, the IN and OUT count information of the body may be acquired based on the moving direction.

Thereafter, the moving direction of the fuselage with respect to the gate 10, the count number of the fuselage corresponding to the forward direction, the count number of the fuselage corresponding to the backward direction, and the number of the remaining fuselage in the target space At least one of the information is wirelessly transmitted to the external device 200 through the wireless module 140 (S840).

FIG. 8B is a detailed flowchart of step S830 of FIG. 8A. Hereinafter, the counting method of the fuselage according to the present embodiment will be described in more detail.

First, the controller 130 receives the sensed values sensed by the motion sensor 110 and the temperature sensor 120 from the respective sensors 110 and 120 (S831).

Then, the operation direction of the motion sensor 110 and the temperature sensor 120 is controlled based on the received detection value to determine the moving direction of the body with respect to the gate 10 (S832). Since the control principle at the time of operation has been described above, a detailed description thereof will be omitted.

Here, it is determined whether the determined advancing direction is the forward (In) direction or the backward (Out) direction (S833). If the moving direction of the current fuselage is in the forward direction, +1 is counted (S834), and if it is in the backward direction, -1 is counted (S835).

Thereafter, the controller 130 may acquire the number of remaining bodies remaining in the target space inside the gate 10 by using the + count number in the forward direction and the − count number in the backward direction (S836). ). Of course, in step S836, the number of counts of the fuselage corresponding to each direction may be obtained by separately using the cumulative count number in the forward direction and the cumulative count number in the backward direction. According to the present embodiment as described above, it is possible to accurately detect the case where there is one or more people in the corresponding target space and when it is not, that is, no people at all.

9 is a detailed flowchart of a direction and count data acquisition method using FIG. 1. Hereinafter, the control of the operation time of each sensor and the process of determining the moving direction of the body through this will be described in detail with reference to FIG.

First, by detecting the infrared wavelength of the body as a primary through the motion sensor 110 (S910). This corresponds to the time point t1 of FIG. 7. That is, in the IN direction of FIG. 7, since the initial detected wavelength value is a negative value, it can be seen that the fuselage first approaches the entry point of the gate 10. Here, a time point at which the absolute value of the detected wavelength value exceeds a preset threshold value corresponds to a time point t1.

Thereafter, the temperature sensor 120 is driven on (S920) and it is checked whether there is a rising temperature change in the sensed temperature value (S930). If there is a rising temperature change, it is determined whether the temperature reaches the reference value (S935). In this case, when the temperature reaches the predetermined reference value, it is determined that the fuselage is a person and moves to the next step. Otherwise, since the fuselage is not a desired fuselage, the previous step is repeated.

When the temperature reaches the reference value, the motion sensor 110 is driven off, and when the temperature sensing value is reached and the set body detection threshold is reached, the sensor enters the temperature detection section (S940). Accordingly, there is a time difference between the time t1 at which the temperature sensor 120 is driven on and the time t1 + α at which the motion sensor 110 is driven off. I can confirm that

Thereafter, it is determined whether the sensed temperature value falls below the threshold (S950). In such a case, when the person is regarded as being far from the center of the gate 10, the temperature sensor 120 is driven off and the motion sensor 110 is driven on (S960). This step S960 corresponds to time t2 of FIG. 7. Accordingly, the human movement can be detected secondarily.

Next, it is determined whether there is a change in the wavelength value falling by the motion sensor 110 (S970). This is to check whether the absolute value of the detected wavelength value changes in the downward direction. Then, it is determined that the absolute value of the wavelength value is less than the threshold value (S975). Here, if the absolute value of the wavelength is less than the threshold, go to the next step, otherwise repeat the previous step.

Here, depending on whether the wavelength value of the motion sensor 110 is positive or negative, it may be determined whether the body has returned to the first detected entry point or whether the body has passed straight through the entry point. In the case of the IN direction of FIG. 7, it can be seen that the second detected wavelength has a positive value and the wavelength value is lower than the threshold value so that a person approaches the exit point secondary (S980).

Thereafter, the controller 130 generates a moving direction and a count value according to the moving body and transmits the generated count value to the wireless module 140 (S990). The transmitted data can be applied and used for various applications.

Hereinafter, an example of a detection value calculation and direction determination method (digital) of the motion sensor 110 according to an embodiment of the present invention will be described. This operation is performed by the controller 130.

First, the detection value corresponding to 14Bit is read from the motion sensor 110 once every 16ms, and converted to Decimal. At this time, a decimal value of 8250 is evicted based on the case where the ambient temperature is 25 ° C. The reference value correction of the sensor uses a correction method according to the ambient temperature. For example, the reference temperature is corrected by reading the temperature of the sensor body and the ambient temperature.

Subsequently, the difference between the value evicted and the value evicted before 16 ms is calculated. Only the change of the positive number (+) side is filtered and processed to determine whether a positive change value corresponding to the human is generated. Detect. At this time, the noise of the motion sensor 110 value is in the range of ± 3, and when the human body detects, the response is more than +30.

Referring to the 'entry direction point (initial detection time point)' near the section t1 for each of the In direction (left picture; forward direction) and the Out direction (right picture; backward direction) of FIG. If the past value before 16ms-present value ≥ if the change value from human detection is more than 30 (when the past value is greater than the present value and the positive number is obtained), the sensing value is decreasing and the In direction (left figure) ) Is the case. On the contrary, if the present value minus the past value of 16 ms ≥ the change value from the detection of the person is 30 or more (the present value is greater than the past value and the positive number comes out), the sensing value is increasing and the Out direction (the right figure) ) Is the case.

In addition, in the 'staying detection section point (the point at which the human body crosses the sensor)' (ex, between the points t1 and t2) of the human body corresponding to the middle of the entry point and the exit point are as follows. After determining the initial direction of entry of the human body in the same way as above, after detecting the dwell time when the human body intersects with the motion sensor through temperature sensing, if the temperature starts to fall again again, the motion sensor Eject the value to detect the direction of the human body.

Next, referring to the 'outgoing direction point (last detection time point)' near the section t2 in FIG. If the past value before 16ms-present value ≥ if the change value from human detection is more than 30 (when the past value is greater than the present value and the positive number is obtained), the sensing value is decreasing and the In direction (left figure) ) Is the case. On the contrary, if the present value minus the past value of 16 ms ≥ the change value from the detection of the person is 30 or more (the present value is greater than the past value and the positive number comes out), the sensing value is increasing and the Out direction (the right figure) ) Is the case.

Combining the above data, the following results can be obtained. Counts +1 in the forward direction, -1 in the reverse direction, counts 0 in the direction of entry and exit, and counts 0 in the direction of exit.

The following describes an example of a sensing value calculation and direction determination method (digital) of the temperature sensor 120. This operation is performed by the controller 130.

First, the sensing value corresponding to 17Bit is read every 7ms from the temperature sensor 120 and converted into Decimal. At this time, a decimal value of 64500 is evicted based on the case where the ambient temperature is 25 ° C. Of course, the reference value correction of the sensor also uses the correction method according to the ambient temperature as described above.

Subsequently, the temperature value A of the instant t1 is determined to be evicted through the motion sensor to be continuously evicted in a 7 ms period, and the time point that is greater than or equal to the predetermined temperature value is recognized as the detection time point of the human body. After that, the value of the motion sensor 110 is evicted again when the temperature value B which is lowered again than the predetermined temperature value is evicted to determine the final direction. At this time, since the temperature value (A) actually detects a slight change in temperature, the filter is applied so that the temperature can clearly come out as a rising value and a falling value. The noise of the temperature sensor 120 value is also in the range of ± 3, and the temperature detection range shows a temperature change of 300 or more in the case of the human body.

10 is a photo-realistic image of an entrance counting device using multiple sensors according to an exemplary embodiment of the present invention. 11 is an exploded perspective view of FIG. 10. It is confirmed that the motion sensor 110 and the temperature sensor 120 are arranged side by side in the center of the device.

According to the method of the present invention as described above, it is possible to detect the direction of the body regardless of the speed in the action, such as normal moving, staying, returning from the position of the two sensors. In addition, the present invention deviates from the function of a simple human body sensor combined with a timer by simply applying a PIR sensor to a conventional body, and includes a body or a body including a motion sensitivity amount, approach direction and a passing direction, a return, and a stay detection for the body. The moving line can be detected effectively from the front of the sensor (10.9 degree viewing angle). Accordingly, count data can be obtained regardless of the speed of the moving body, and can be applied in various ranges because it can be compact, light weight, and low power.

In particular, since the movement count of the personnel to the space having the door, or the personnel count information in the narrow passage and the specific space is provided along with the directionality, the light control data, the heater control data, the security intrusion data, and the life-saving disaster prevention based on this It can be used as a useful application in various fields such as lighting, alarm, air conditioner, automobile, home appliance, etc.

While the present invention has been described with reference to exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims. Accordingly, the true scope of the present invention should be determined by the technical idea of the appended claims.

100: fuselage entrance counting device using multiple sensors
110: motion sensor 111: first sensing core
112: second sensing core 113: sensor body
120: temperature sensor 130: control unit
140: wireless module 200: external device

Claims (18)

A motion sensor installed at the gate and recognizing an infrared wavelength of the body passing through the gate to sense the presence of the body at an entry or exit point of the gate;
A temperature sensor installed at the gate and sensing a temperature of the fuselage; And
The operating time of the motion sensor and the temperature sensor is controlled by using the detected values of the motion sensor and the temperature sensor to determine a moving direction of the body with respect to the gate, and then the inside of the gate through the determined moving direction. A fuselage access counting device using multiple sensors including a control unit for counting the number of fuselage existing in the target space. The method according to claim 1,
The control unit,
When counting the number of fuselage existing in the target space, if the fuselage is in the forward direction entering the target space inside the gate, +1 is counted, and if the fuselage is a backward direction exiting the gate from the target space- Fuselage access counting device using multiple sensors to count 1. The method according to claim 2,
At least one of information about a moving direction of the fuselage with respect to the gate, a count of the fuselage corresponding to the forward direction, a count of the fuselage corresponding to the backward direction, and a number of the fuselage present in the target space is externally provided. Fuselage access count device using a multi-sensor further comprising a wireless module for wireless transmission to the device. The method according to claim 1,
The control unit,
When the infrared wavelength of the fuselage is first detected at the entry or exit point of the gate, the temperature sensor is turned on and the motion sensor is turned off to control the temperature of the fuselage to be sensed.
When the temperature of the fuselage falls below the threshold again, the fuselage entry and counting device using a multi-sensor to control the second sensor to detect the infrared wavelength of the fuselage at the entry or exit point by driving the temperature sensor off and driving the motion sensor on . The method of claim 4,
When the infrared wavelength of the fuselage is first detected at the entry or exit point of the gate, the temperature sensor is controlled to sense the temperature of the fuselage by turning on the temperature sensor.
Fuselage entry counting device using a multiple sensor to drive off the motion sensor when the temperature of the fuselage exceeds any reference value. The method of claim 4,
The motion sensor,
Sensor body;
A first sensing core provided at a portion of the sensor body corresponding to an entry point of the gate and providing a negative or positive value of a wavelength detected from the body; And
A multi-sensor provided at a portion of the sensor body corresponding to the exit point of the gate and including a second sensing core configured to provide a wavelength value detected from the fuselage as a positive or negative value opposite to the first sensing core; Fuselage access count device using the. The method according to claim 1,
The motion sensor and the temperature sensor,
Fuselage access counting device using multiple sensors with Fresnel lenses coupled to the front. The method according to claim 1,
The motion sensor and the temperature sensor,
Fuselage entry and counting devices using multiple sensors, each a motion PIR (Pyroelectric Infrared) sensor and a temperature PIR sensor. The method according to claim 1,
The motion sensor and the temperature sensor,
Body access counting device using multiple sensors integrated into a single module. Detecting an infrared ray wavelength of the fuselage passing through the gate using a motion sensor installed at the gate to detect the presence of the fuselage at an entry or exit point of the gate;
Sensing the temperature of the fuselage using a temperature sensor installed at the gate; And
The operating time of the motion sensor and the temperature sensor is controlled by using the detected values of the motion sensor and the temperature sensor to determine a moving direction of the body with respect to the gate, and then the inside of the gate through the determined moving direction. A method of counting body traffic using multiple sensors, comprising: counting a number of bodies existing in a target space. The method of claim 10,
Counting the number of fuselage existing in the target space,
And counting +1 if the fuselage is in a forward direction entering the object space inside the gate, and counting -1 if the fuselage is in the backward direction exiting the gate from the target space. The method of claim 11,
At least one of information about a moving direction of the fuselage with respect to the gate, a count of the fuselage corresponding to the forward direction, a count of the fuselage corresponding to the backward direction, and a number of the fuselage present in the target space is externally provided. Fuselage access count method using a multiple sensor further comprising the step of wireless transmission to the device. The method of claim 10,
Determining the moving direction of the fuselage,
Controlling the sensor to sense the temperature of the fuselage by driving the temperature sensor on and driving the motion sensor off when the infrared wavelength of the fuselage is first detected at the entry or exit point of the gate; And
And when the temperature of the fuselage falls below a threshold again, driving the temperature sensor off and driving the motion sensor on so that the infrared wavelength of the fuselage is secondarily detected at the entry or exit point. Fuselage entry count method. The method according to claim 13,
When the infrared wavelength of the fuselage is first detected at the entry or exit point of the gate, the temperature sensor is controlled to sense the temperature of the fuselage by turning on the temperature sensor.
Fuselage entry count method using a multi-sensor to drive off the motion sensor when the temperature of the fuselage exceeds an arbitrary reference value. The method according to claim 13,
The motion sensor,
Sensor body;
A first sensing core provided at a portion of the sensor body corresponding to an entry point of the gate and providing a negative or positive value of a wavelength detected from the body; And
A multi-sensor provided at a portion of the sensor body corresponding to the exit point of the gate and including a second sensing core configured to provide a wavelength value detected from the fuselage as a positive or negative value opposite to the first sensing core; Fuselage access count method using. The method of claim 10,
The motion sensor and the temperature sensor,
Fuselage access counting method using multiple sensors, each Fresnel lens is coupled to the front. The method of claim 10,
The motion sensor and the temperature sensor,
Fuselage entry and counting method using multiple sensors, respectively, a motion PIR (Pyroelectric Infrared) sensor and a temperature PIR sensor. The method of claim 10,
The motion sensor and the temperature sensor,
Fuselage access count method using multiple sensors that are integrated into a single module.

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