TWI558988B - Apparatus and method for detecting azimuth of heat source - Google Patents

Description

Device and method for detecting heat source orientation

The present invention relates to an apparatus and method for detecting the orientation of a heat source, and more particularly to an infrared sensing device and a detecting method capable of detecting a position of a static and dynamic heat source.

For infrared sensing devices that use infrared sensors today, they are usually only used to detect if a heat source has entered its scanning range. That is to say, the infrared sensing device can be applied to a narrower level, and it is impossible to detect whether the heat source still exists or to further confirm its orientation relative to the sensing device; therefore, how to detect the heat source orientation through the infrared sensing device is actually One of the goals that researchers in the field want to achieve. Therefore, the present inventors have felt that the above problems can be improved, and they have devoted themselves to research and cooperate with the application of the theory, and finally proposed a present invention which is reasonable in design and effective in improving the above problems.

The embodiments of the present invention provide an apparatus and method for detecting the orientation of a heat source, which can effectively improve the problem that the heat source azimuth detection cannot be performed by a device equipped with a single infrared sensor.

An embodiment of the present invention provides a device for detecting a heat source orientation, comprising: a control device, comprising: a circuit board; a microcontroller electrically connected to the circuit board; and a driving module The device is electrically connected to the circuit board, and the driving module is electrically connected to the controller through the circuit board; and a detecting device includes: a turntable connected to the driving module; Reference piece The locating member is mounted on the turntable, and the turntable can be self-rotating by an axis of the drive through the driving of the driving module; wherein the positioning member is provided with a target positioning portion; a sensor electrically connected to the circuit board for receiving an infrared signal transmitted to the detecting device via the positioning component, and the infrared signal is transmitted to the infrared sensor via the target positioning portion The generated signal strength is different from the signal intensity generated by the infrared signal transmitted to the infrared sensor via the positioning portion other than the target positioning portion; and a reference determining member electrically connected to the control device And matching the reference member disposed on the turntable as a reference for a starting time point of the target positioning portion when rotating.

The embodiment of the present invention further provides a method for detecting the orientation of a heat source, comprising: providing an infrared sensing device having a control device and a detecting device electrically connected to the control device; wherein the detecting The device comprises: a target positioning portion capable of self-rotating with an axis as an axis; an infrared sensor; and a reference determining member electrically connected to the control device, and the reference determining member is used as The reference position of the target positioning unit at a starting time point of rotation; the detection step is as follows: Step 1: The control device detects, by the reference determining unit, a unit time period required for the target positioning unit to rotate one turn ( Tc), and the target positioning portion stops rotating, and is located in the reference determination component; Step 2: the infrared sensing device performs heat source detection within a scan range thereof; and Step 3: When the infrared sensing device detects When an external heat source enters its scanning range, the control device drives the target positioning portion to rotate, and performs the following orientation determination operation of the external heat source. a plane defined by the axis is defined as an azimuth plane, and the position of the reference judging element corresponding to the azimuth plane is defined as a reference orientation (0°) on the azimuth plane centered on the axis; When an infrared signal emitted from the external heat source is transmitted to the infrared sensor via the target positioning portion, a time point corresponding to the unit time period is defined as a heat source time point (Ts); when the external heat source is At the time of the heat source, the target positioning portion is projected on the position of the azimuth plane, and the angle with respect to the reference orientation is defined as a heat source azimuth (θ x), and the heat source azimuth is transported by the control device Calculating the following equation: θ x=(Ts/Tc) x 360°; and step 4: when the infrared sensing device detects that the external heat source is out of its scanning range, the target positioning portion can selectively The rotation is stopped and placed on the reference judgment piece.

In summary, the apparatus and method for detecting the orientation of a heat source provided by the embodiments of the present invention can effectively transmit the intensity of the signal generated by the infrared signal to the infrared sensor via the target positioning portion, which is different from the target positioning portion. The signal intensity generated by the position of the positioning member and transmitted to the infrared sensor, and the reference of the infrared sensing device and the target positioning portion, so that the external heat source is at a specific time point (ie, the heat source time point) The azimuth can be measured quickly.

The detailed description of the present invention and the accompanying drawings are to be understood by the claims The scope is subject to any restrictions.

100‧‧‧Infrared sensing equipment

1‧‧‧Control device

11‧‧‧ boards

12‧‧‧Microcontroller

13‧‧‧Drive Module

131‧‧‧Drive motor

132‧‧‧ drive gear

2‧‧‧Detection device

21‧‧‧Infrared sensor

211‧‧‧Detection surface

22‧‧‧ Bearing

23‧‧‧ Turntable

231‧‧‧First ring

232‧‧‧Second ring

233‧‧‧Transmission gear

24‧‧‧ Positioning parts

241‧‧‧Target Positioning Department

242‧‧‧Concentration Department

243‧‧‧ Surrounding

2431‧‧‧ concentrating surround

2432‧‧‧shading the surrounding

25‧‧‧ benchmark judgement

251‧‧‧Optical Receiver

26‧‧‧Focus

261‧‧‧Concentration Department

27‧‧‧ benchmark

271‧‧‧Reflecting film

3‧‧‧Shell

31‧‧‧ Directional indication

32‧‧‧Detection components

C‧‧‧ axis

θ x‧‧‧ heat source azimuth

S‧‧‧ scan range

P‧‧‧Azimuth

200‧‧‧External heat source

300‧‧‧ entrances and exits

S110‧‧‧Step one

S120‧‧‧Step 2

S130‧‧‧Step three

S140‧‧‧Step four

1A is a perspective view of a first embodiment of an infrared sensing device used in a method for detecting a heat source orientation according to the present invention.

FIG. 1B is a schematic view showing another mounting configuration of the infrared sensing device of FIG. 1A.

1C is a schematic flow chart showing the steps of the method for detecting the orientation of a heat source according to the present invention.

2 is an exploded perspective view of the infrared sensing device of FIG. 1A.

FIG. 3 is another perspective exploded view of the infrared sensing device of FIG. 1A.

4 is an exploded perspective view of the turntable and the positioning member of FIG. 2.

FIG. 5 is a top plan view of the positioning member of FIG. 4. FIG.

Figure 6 is a cross-sectional view of the infrared sensing device of Figure 1A.

FIG. 7 is a schematic diagram of the third step of the first embodiment of the method for detecting the orientation of a heat source according to the present invention.

FIG. 8 is a schematic view (1) of the operation of the infrared sensing device of FIG. 7. FIG.

FIG. 9 is a schematic diagram of the operation of the infrared sensing device of FIG. 7 (2).

FIG. 10 is a schematic diagram of a positioning member of a second embodiment of an infrared sensing device used in the method for detecting a heat source orientation according to the present invention.

11 is a third infrared sensing device used in the method for detecting the orientation of a heat source according to the present invention; A perspective view of an embodiment.

Figure 12 is a schematic view of the positioning member and the focusing member of the infrared sensing device of Figure 11;

FIG. 13 is a partial perspective view of a fourth embodiment of an infrared sensing device used in the method for detecting a heat source orientation according to the present invention.

14 is a partial perspective view of a fifth embodiment of an infrared sensing device used in the method for detecting a heat source orientation according to the present invention.

[First Embodiment]

Please refer to FIG. 1A to FIG. 9 , which are the first embodiment of the present invention. It should be noted that the related quantities and appearances mentioned in the embodiment are only used to specifically describe the implementation of the present invention. The manner in which the content is understood is not to be construed as limiting the scope of the invention.

The embodiment of the present invention provides a device 100 for detecting the orientation of a heat source (ie, the infrared sensing device 100) and a method for detecting the orientation of the heat source, and the method for detecting the orientation of the heat source is mainly through the infrared sensing device 100 in this embodiment. The infrared sensing device 100 has a housing 3, a control device 1 mounted in the housing 3, and a detecting device 2 mounted in the housing 3 and electrically connected to the control device 1. Hereinafter, a brief description will be given of each component of the infrared sensing device 100, and then a method of detecting the orientation of the heat source using the infrared sensing device 100 will be described.

Please refer to Figure 2 and Figure 3, and when introducing the connection relationship between components, please refer to Figure 6 as appropriate. The control device 1 includes a circuit board 11 , a microcontroller 12 mounted on the circuit board 11 , and a driving module 13 mounted on the circuit board 11 and electrically connected to the microcontroller 12 . The microcontroller 12 is used to control the operation of various components in the infrared sensing device 100. The driving module 13 includes a driving motor 131 and a transmission gear 132 connected to the driving motor 131 in this embodiment.

The detecting device 2 includes an infrared sensor 21 fixed on the circuit board 11, a bearing 22 sleeved on the outer edge of the infrared sensor 21, a turntable 23 mounted on the bearing 22, and a mounting device A positioning member 24 of the turntable 23 and a reference determining member 25 electrically connected to the control device 1 are provided.

The infrared sensor 21 has a detecting surface 211 away from the circuit board 11 , and the infrared sensor 21 is electrically connected to the microcontroller 12 of the control device 1 . That is, the signal received by the detecting surface 211 of the infrared sensor 21 can be transmitted to the microcontroller 12 for the microcontroller 12 to make a corresponding determination. Furthermore, the center line of the infrared sensor 21 is defined as an axis C in the embodiment, and the number of the infrared sensors 21 used in the infrared sensing device 100 of the present embodiment need only be a single, that is, The preferred embodiment of the infrared sensing device 100 of the present invention eliminates the use of two or more infrared sensors 21; the infrared sensor 21 can be a pyroelectric infrared sensing element or a thermal image sensing device. Components can be implemented according to the precise requirements of detection.

The turntable 23 has a first ring body 231, a second ring body 232 connected to the first ring body 231, and a transmission gear 233 connected to the second ring body 232, and the first ring body 231. The outer diameter of the second ring body 232 is substantially the same, and the outer diameter of the transmission gear 233 is smaller than the outer diameter of the second ring body 232. The inner edge of the transmission gear 233 of the turntable 23 is sleeved on the outer edge of the bearing 22, and the center of the transmission gear 233 and the center of the second ring body 232 are seated on the axis C. Furthermore, the transmission gear 233 is meshed with the drive gear 132 of the drive module 13 so that the turntable 23 can be driven by the drive module 13 to rotate automatically with the axis C as the axis.

As shown in FIG. 4 and FIG. 5, the positioning member 24 is a substantially hemispherical housing. The positioning member 24 is disposed between the first ring body 231 and the second ring body 232 of the turntable 23, and protrudes from the turntable. 23, whereby the drive module 13 drives the turntable 23 to rotate, The position member 24 can be self-rotating with the turntable 23 with the above-mentioned axis C as the axis. Further, the outer surface of the positioning member 24 is rounded, and the inner surface of the positioning member 24 is formed with a target positioning portion 241 and a plurality of light collecting portions 242. The configuration of the target positioning portion 241 is different from the configuration of any of the light collecting portions 242, and any of the light collecting portions 242 may be semi-transmissive or opaque, which is presented in a single convex lens configuration in this embodiment. In the present embodiment, the target positioning unit 241 is represented by a combination of a plurality of semi-convex lens structures and a shielding structure. The positioning member 24 of the present invention is designed as a hemispherical housing for enabling the detection area. Approaching one-half of any space, in other words, by providing the infrared sensing device 100 of the present invention on one of the walls of the cubic space, the state within the entire cubic space can be detected.

Moreover, the concentrating portions 242 and the target positioning portion 241 have a common focus, the focus is substantially on the axis C, and the focus falls on the detecting surface 211 of the infrared sensor 21. Accordingly, the structure of the transmission target locating portion 241 is different from the configuration of any of the condensing portions 242, so that the infrared signal can be transmitted to the signal intensity generated by the detection surface 211 of the infrared ray sensor 21 via the target positioning portion 241. The infrared signal emitted by the infrared heat source 200 is transmitted to the detection surface 211 of the infrared sensor 21 via any of the light collecting portions 242.

Further, since any concentrating portion 242 is presented in a single convex lens configuration in the present embodiment, the target positioning portion 241 is represented by a combination of a plurality of semi-convex lens structures and a shielding structure in this embodiment; When the infrared signal is transmitted to the detection surface 211 of the infrared sensor 21 via the target positioning unit 241, the signal intensity generated by the infrared signal is substantially transmitted to the detection surface 211 of the infrared sensor 21 via the light collection unit 242. One and a half of the resulting signal strength.

According to the above, since the positioning member 24 has a hemispherical structure, so that the detecting surface 211 of the infrared sensor 21 can be disposed on the focus of the positioning member 24, the infrared signal outside the infrared sensing device 100 is passed through The hemispherical positioning member 24 is focused on the detecting surface 211 of the infrared sensor 21, thereby achieving the effect of raising the signal receiving range through the hemispherical positioning member 24. That is, the hemispherical positioning member 24 can The infrared signal transmitted thereto from any position is collected in the infrared sensor 21 so that the infrared sensor 21 is provided with a wider signal receiving range through the arrangement of the hemispherical positioning member 24.

In addition, in the embodiment, the positioning member 24 achieves the effect of focusing on the detecting surface 211 of the infrared sensor 21 in a convex lens type. However, in actual application, the configuration of the positioning member 24 is not limited thereto. For example, the positioning member 24 can also achieve the effect of focusing on the detecting surface 211 of the infrared sensor 21 by a mirror type or a Fresnel's lens type not shown.

As shown in FIG. 6, the reference judging member 25 is for detecting the time required for the target positioning portion 241 of the positioning member 24 to rotate one turn, and defines the time as a unit time period (Tc). In other words, the function of the reference judging member 25 is to provide a reference datum of the starting point of time at which the positioning member 24 is rotated. The reference judging component 25 includes a photoreceiver 251 mounted on the circuit board 11 and electrically connected to the microcontroller 12 in this embodiment. A reference member 27 corresponding to the target positioning portion 241 is disposed on the second ring body 232 of the turntable 23, which is a light reflecting sheet 271 in this embodiment, and light receiving when the light reflecting sheet 271 faces the light receiver 251. The 251 is adapted to receive an optical signal reflected from the retroreflective sheeting 271. Therefore, when the reflector 271 (the target positioning portion 241) is positioned behind the light receiver 251, the turntable 23 rotates one turn and the light receiver 251 receives the light signal from the retroreflective sheet 271, the microcontroller 12 passes the light receiver. The signal transmitted by 251 can know the unit time period (Tc) required for the turntable 23 (or the target positioning portion 241) to rotate one turn.

In addition, in the embodiment, the light reflecting sheet 271 is used as the reference member 27, and is matched with the light receiver 251 as the reference determining member 25, so as to achieve the reference reference effect of providing the reference point of rotation of the positioning member 24, but in practical application. The reference judging member 25 is not limited to the photoreceiver 251. For example, the reference judging member 25 can also use a micro switch to match the "bump structure" disposed on the second ring body 232 (ie, the bump structure as the reference member 27) to provide the rotation start reference of the positioning member 24. Time point (not shown); or for the photointerrupter with the "interrupting structure" (ie, the occlusion structure) disposed on the second ring body 232 The reference member 27) is configured to provide a rotation start start reference time point (not shown) of the positioning member 24; further, the retroreflective sheet 271 provides a rotation start start reference time point of the positioning member 24, that is, 0° in one rotation and The overlapping point of 360°, the reference member 27 can also add the retroreflective sheeting 271 at 90°, 180° and 270° to improve the correction accuracy.

The above is a brief description of the infrared sensing device 100 of the present embodiment. The following describes the method for detecting the orientation of the heat source according to the embodiment, and the method is as follows (please refer to FIG. 1C, FIG. 7 to FIG. 9): providing the above-mentioned infrared sensing The device 100, the specific configuration of the infrared sensing device 100 will not be repeated herein. When the following description refers to the components of the infrared sensing device 100, please refer to the corresponding drawings as appropriate, including the following steps:

Step 1 (S110): The microcontroller 12 of the control device 1 commands the driving module 13 to operate to drive the turntable 23 and the positioning member 24 (target positioning portion 241) thereon to rotate and rotate at the target positioning portion 241. In the process, the reference period determining unit 25 detects the unit time period (Tc) required for the target positioning unit 241 to rotate one turn, and simultaneously records the transient heat source condition in the scanning range S of one of the infrared sensing devices 100. After the transient heat source condition is compared with the ambient temperature mean value defined by the preset parameter, if there is no existing external heat source 200, the infrared sensing device 100 updates the transient heat source status as a follow-up comparison basis and enters a standby In the state, the turntable 23 and the positioning member 24 (target positioning portion 241) thereon are stopped from rotating, and the target positioning portion 241 on the positioning member 24 is positioned as the reference position determining member 25 as the stop position. Otherwise, the position determination operation of step 3 is performed.

It should be noted that when the infrared sensing device 100 is installed in an environment in which at least one inlet and outlet 300 is provided (as shown in FIG. 1B ), the inlet and outlet 300 can be regarded as an external heat source 200, and the scanning range S of the infrared sensing device 100 is compared. The best includes the above-mentioned entrances and exits 300. Further, the infrared sensing device 100 in the standby state is disposed such that the shielding structure of the target positioning portion 241 is not directed toward the inlet and outlet 300, thereby avoiding When the external heat source 200 is prevented from entering and exiting the inlet and outlet 300, the infrared signal emitted from the external heat source 200 cannot be transmitted from the shielding structure to the infrared sensor 21, thereby improving the reaction speed of the infrared external sensing device 100 to detect the dynamic external heat source 200.

Furthermore, the infrared sensing device 100 can be provided with a direction indicator 31 on the portion of the housing 3 corresponding to the shielding structure of the target positioning portion 241, so as to arrange the positioning of the required detection orientation when the user installs the infrared sensing device 100. That is, the relationship between the detected area and the infrared sensing device 100 is arranged, and the target positioning portion 241 of the infrared sensing device 100 in the standby state can be shielded from the non-oriented direction by the direction indicator 31. The above-mentioned way of entrance and exit is set.

Step 2 (S120): The infrared sensing device 100 in the standby state continues to perform heat source detection in the scanning range S, and the positioning member 24 at this time is in an unrotated state. It should be noted that the scanning range S of the infrared sensing device 100 presented in the drawing in this embodiment is for illustrative purposes only and is not limited thereto.

Step 3 (S130): When the infrared sensing device 100 detects that an external heat source 200 (eg, a person) enters its scanning range S (as shown in FIG. 7), an orientation determination action is performed, and the control device 1 can select An electrical signal is sent to control an external device (for example, an alarm device or a heat sink). In practical applications, the infrared sensing device 100 can also detect the ambient temperature when the external heat source 200 (eg, a person) enters the scanning range S, and when the ambient temperature is higher than 30 ° C, the scanning range is made. The heat sink (slightly shown) in S enters the standby state.

The manner in which the external heat source 200 enters the scanning range S is determined in the present embodiment is determined by the signal strength received by the infrared sensor 21. Further, when the signal intensity distribution received by the infrared sensor 21 is different from the transient heat source status updated in the first step (S110), the microcontroller determines that the external heat source 200 enters the scanning of the infrared sensing device 100. Range S.

Furthermore, the orientation determining operation includes: the microcontroller of the control device 1 The command drive module 13 operates to drive the turntable 23 and the positioning member 24 (target positioning portion 241) thereon to rotate (see Figs. 8 and 9). During the rotation of the target positioning unit 241, the rotation speed of the target positioning unit 241 is controlled to be smaller than the signal receiving frequency of the infrared sensor 21, so as to prevent the infrared sensor 21 from reacting to cause a positioning offset or insufficient signal amplitude. . In this embodiment, the control device 1 controls the target positioning unit 241 to take one rotation per turn, but is not limited thereto. When the control device 1 drives the positioning member 24 to rotate, the infrared signal emitted by the external heat source 200 is transmitted to the detection surface 211 of the infrared sensor 21 via the target positioning portion 241, which is smaller than the external heat source 200. The emitted infrared signal is transmitted to the signal intensity generated by the detection surface 211 of the infrared sensor 21 via any of the light collecting portions 242.

The orientation determining operation then performs the following orientation determination of the external heat source 200: a plane (eg, ground) with the axis C as a normal is defined as an azimuth plane P, and an azimuth plane P centered on the axis C The position of the reference judging member 25 corresponding to the azimuth plane P is defined as a reference orientation (0°).

When the infrared signal emitted from the external heat source 200 is transmitted to the detecting surface 211 of the infrared sensor 21 via the target positioning portion 241, a time point corresponding to the unit period (Tc) is defined as a heat source time point (Ts). That is to say, the infrared signal emitted from the external heat source 200 is not transmitted to the detecting surface 211 of the infrared sensor 21 via the target positioning portion 241 before the heat source time point.

Wherein, when the external heat source 200 is at the heat source time point, the target positioning portion 241 is projected on the position of the azimuth plane P, the angle with respect to the reference azimuth is defined as a heat source azimuth angle θ x , and the heat source azimuth angle θ x is controlled via the control device The microcontroller 12 of 1 calculates the following equation: θ x = (Ts / Tc) x 360 °. Furthermore, when the heat source azimuth angle θ x is known, the control device 1 can selectively emit an electrical signal to control the external device. In practical applications, the infrared sensing device 100 can detect that the external heat source 200 (eg, a person) is in a certain orientation time and exceeds a set value. When the heat sink of the orientation is activated.

Step 4 (S140): After the external heat source 200 leaves the scanning range S, the transient heat source condition is updated, and the infrared sensing device 100 enters the standby state; the turntable 23 and the positioning member 24 thereon (the target positioning portion 241) The rotation is stopped, and the target positioning portion 241 on the positioning member 24 is positioned on the reference judging member 25. Moreover, after the external heat source 200 leaves the scanning range S, the control device 1 can selectively emit an electrical signal to control the external device. In practical applications, the infrared sensing device 100 can turn off the heat sink in the scanning range S after detecting that the external heat source 200 (eg, a person) leaves the scanning range S.

The manner in which the present embodiment determines whether the external heat source 200 has left the scanning range S is determined by the signal strength received by the infrared sensor 21. Further, when the signal intensity distribution received by the infrared sensor 21 is equal to the transient heat source condition updated by the infrared sensor 21 in step one (S110), the microcontroller 12 determines that the external heat source 200 is The scanning range S of the infrared sensing device 100 has been left.

Therefore, the infrared sensing device 100 and the method for detecting the orientation of the heat source provided by the embodiment of the present invention effectively transmit the signal intensity generated by the infrared signal to the infrared sensor 21 via the target positioning portion 241 through the infrared signal. The signal intensity generated by the position of the positioning member 24 other than the target positioning unit 241 (for example, the condensing unit 242) is transmitted to the infrared sensor 21, and the reference determining unit 25 of the infrared sensing device 100 is matched with the target positioning unit 241. The heat source azimuth angle θ x at which the external heat source 200 is located at a specific point in time (ie, the heat source time point) can be quickly measured.

Furthermore, since the manner in which the external heat source 200 enters or leaves the scanning range S of the infrared sensing device 100 is determined, the transient heat source status updated in the first step (S110) by the single infrared sensor 21 is used as a reference, so that infrared sensing is required. The device 100 has an external heat source within the scanning range S, that is, can be detected. According to this, the infrared rays The sensing device 100 and its method of detecting the orientation of the heat source are capable of detecting the heat source azimuth angle θ x for the static or dynamic external heat source 200.

In addition, in steps 1 to 4, after the target positioning unit 241 is driven to rotate, it can also be set to maintain the state of rotation until the power is turned off or turned off, that is, when the infrared sensing device 100 is in the standby state, the turntable is still enabled. 23 and the positioning member 24 (target positioning portion 241) thereon rotate to increase the reaction speed of the external heat source 200 and maintain the most instantaneous transient heat source condition.

It should be added that the time unit of the unit time period (Tc) is not specifically limited in the above steps, that is, the time unit of the unit time period (Tc) can be adjusted according to the designer's needs. For example, in step 1 (S110), when the detection target determining unit 241 is rotated by one rotation through the reference determining unit 25, the total number of seconds required to be used is defined as the unit time period, and the unit time period is M seconds; In the position determining operation, the heat source time point is the Nth second, and M is greater than or equal to N, and the equation is further defined as: θ x=(N/M) x 360°. Alternatively, in step 1 (S110), when the detection target determining unit 241 detects one rotation of the target positioning unit 241, the total number of clocks transmitted to the infrared sensor 21 via the target positioning unit 241 is defined as the unit time period. And the unit time period is R clocks; and in the position determining operation, the heat source time point is the Qth clock, R and Q are both positive integers, and R is greater than or equal to Q, the equation is further defined as: θ x= (Q/R) x 360°.

In addition, the structure of the infrared sensing device 100 described in this embodiment is only used to understand the method for detecting the heat source orientation of the present invention, that is, before the method for detecting the heat source orientation according to the present invention, the infrared sensing device 100 is The configuration can be adjusted according to the designer's needs, and is not limited to the method of detecting the heat source orientation proposed by the present invention.

[Second embodiment]

Please refer to FIG. 10 , which is a second embodiment of the present invention. An embodiment is similar, and the same point is not described again, and the difference between the two is mainly in the positioning member 24 of the detecting device 2, and the specific differences are explained below.

The inner surface of the positioning member 24 of the present embodiment is formed with a target positioning portion 241 and a surrounding portion 243 surrounding the target positioning portion 241. The structure of the target positioning unit 241 is different from the structure of the surrounding portion 243, and the infrared signal can be transmitted to the signal intensity generated by the infrared sensor 21 via the target positioning unit 241, which is greater than the infrared signal transmitted through the surrounding portion 243. The signal intensity generated by the infrared sensor 21.

Further, the target positioning portion 241 may be semi-transmissive or opaque, which in the present embodiment is represented by a combination of a plurality of semi-convex lens structures and a shielding structure, and the surrounding portion 243 is in this embodiment. The C-shaped concentrating surrounding portion 2431 and a shielding surrounding portion 2432 located in the concentrating surrounding portion 2431 are included. The two ends of the concentrating surrounding portion 2431 are connected to the outermost end of the target positioning portion 241, that is, the concentrating surrounding portion 2431 is the outermost convex lens structure in the positioning member 24, thereby detecting the external heat source 200. Detection of presence or absence. Furthermore, the target positioning portion 241 has a focus, and the focus falls on the detection surface 211 of the infrared sensor 21.

In step 3 (S130), when the control device 1 drives the positioning member 24 to rotate, the infrared signal emitted by the external heat source 200 is transmitted to the signal intensity generated by the infrared sensor 21 via the target positioning portion 241, and the difference is different. The infrared signal emitted from the external heat source 200 is transmitted to the signal intensity generated by the infrared sensor 21 via the surrounding portion 243. Furthermore, in the present embodiment, the infrared signal emitted by the external heat source 200 can only be transmitted to the infrared sensor 21 via the target positioning portion 241 or the light collecting surrounding portion 2431, and cannot be transmitted through the shielding surrounding portion 2432. To the infrared sensor 21. In practical applications, the infrared sensing device 100 uses the positioning member 24 of the embodiment to perform heat source orientation detection. When the control device 1 drives the positioning member 24 to rotate, the complete signal waveform of only one rotation of the record is required. The approved unit time period (Tc) is the highest amplitude in the waveform section, and is regarded as a heat source time point (Ts), so that the heat source orientation can be estimated.

[Third embodiment]

Referring to FIG. 11 and FIG. 12, which is a third embodiment of the present invention, the present embodiment is substantially similar to the second embodiment, and the same portions are not described again, and the difference between the two is mainly the positioning device of the detecting device 2. 24, and this embodiment further includes a focusing member 26 corresponding to the positioning member 24, the specific differences are explained below.

The focusing member 26 is mounted on the housing 3 and is disposed outside the positioning member 24 . The focusing member 26 is formed with a plurality of collecting portions 261 , and the positioning member 24 is formed with the target positioning portion 241 and a surrounding around the target positioning portion 241 . Department 243. In any of the embodiments, the concentrating portion 261 is represented by a single convex lens structure, and the configuration of the target positioning portion 241 is different from the configuration of the surrounding portion 243, and enables the infrared signal to be positioned through the concentrating portion 261 and the target. The signal intensity generated by the portion 241 transmitted to the infrared sensor 21 is smaller than the signal intensity generated by the infrared signal emitted from the external heat source 200 transmitted to the infrared sensor 21 via any of the light collecting portion 261 and the surrounding portion 243. .

Further, the target positioning portion 241 may be semi-transparent or opaque, which is presented in a semi-convex light transmissive structure in this embodiment, that is, the target positioning portion 241 shields the concentrating portion 261. The semi-convex lens configuration, while the surrounding portion 243 is present in the light transmissive configuration in this embodiment. Moreover, the concentrating portions 242 have a common focus which falls on the infrared sensor 21.

In step 3 (S130), when the control device 1 drives the positioning member 24 to rotate, the focusing member 26 remains stationary, and the infrared signal emitted by the external heat source 200 is transmitted to the target positioning portion 241 via any of the collecting portion 261. The signal intensity generated by the infrared ray sensor 21 is smaller than the signal intensity generated by the infrared ray signal emitted from the external heat source 200 via the concentrating portion 261 and the surrounding portion 243 to the infrared ray sensor 21. Further, in the present embodiment, after the infrared signal emitted by the external heat source 200 passes through any of the concentrating portions 261 of the focusing member 26, half of the signals are blocked when passing through the target positioning portion 241, but after passing through The surrounding portion 243 passes directly through, thus making the signal strength different.

Accordingly, the greatest advantage of the infrared sensing device 100 provided by the embodiment is The focusing member 26 is fixed to make the infrared signal received by the infrared sensor 21 more stable.

[Fourth embodiment]

Referring to FIG. 13 , which is a fourth embodiment of the present invention, the present embodiment is substantially similar to the third embodiment, and the same portions are not described again, and the difference between the two is mainly that the target positioning unit 241 of the present embodiment is The hollowed out or fully light transmissive structure is presented, while the surrounding portion 243 is presented in a semi-transmissive configuration.

Further, the target positioning portion 241 is configured to be hollowed out or completely transparent, so that the infrared signal passing through any of the concentrating portion 261 and the target positioning portion 241 can be completely focused and transmitted to the infrared ray sensor 21. Furthermore, the surrounding portion 243 is provided in a semi-transmissive structure, and the infrared signal emitted by the external heat source 200 can be transmitted to the signal intensity generated by the infrared sensor 21 via the concentrating portion 261 and the target positioning portion 241. It is much larger than the signal intensity generated by the infrared signal emitted by the external heat source 200 to the infrared sensor 21 via any of the concentrating portion 261 and the surrounding portion 243.

Therefore, in the practical application, when the external heat source 200 enters the scanning range S, the signal intensity transmitted by the infrared signal to the infrared sensor 21 via the focusing member 26 and the surrounding portion 243 is small, but the control device 1 remains The determination can be recognized, and the positioning member 24 is driven to rotate, and the external heat source 200 is tracked by the target positioning portion 241.

The biggest advantage of this embodiment is that the infrared sensing device 100 can accurately determine the orientation of the multiple external heat sources 200 or further detect the intensity of the external heat source 200. Further, the infrared sensing device 100 can define the orientation of the external heat source 200 for the state of the external heat source 200 being stationary and moving, or use the amplitude of the infrared signal to define the intensity of the external heat source 200.

In the foregoing embodiments, the infrared signals must be transmitted to the infrared through the positioning member 24. The line sensor 21, wherein the positioning member 24 is further provided with a target positioning portion 241 for positioning and tracking the external heat source 200. In addition to the target positioning portion 241, the positioning member 24 may be provided with a surrounding portion 243 (third, fourth embodiment), a concentrated surrounding portion 2431 (second embodiment), or a collecting portion 242 (first In the embodiment, the infrared signal emitted by the external heat source 200 when entering or already existing in the scanning range S is transmitted to the infrared sensor 21, thereby initiating the position determining operation of the third step (S130). In actual use, a detecting component 32 electrically connected to the control device 1 can be additionally added to the housing 3 to realize the requirement of detecting angle or detecting conditions, and avoiding misjudgment and more accurate detection. It is detected whether the external heat source 200 enters the scanning range S. The sensing medium of the detecting component 32 may be infrared, ultrasonic, or visible light, which is not limited herein.

[Fifth Embodiment]

Referring to FIG. 14 , which is a fifth embodiment of the present invention, the present embodiment is substantially similar to the third embodiment, and the same portions are not described again, and the difference between the two is mainly due to the structural design of the positioning member 24 of the present embodiment. .

Specifically, the positioning member 24 of the embodiment has a target positioning portion 241 and a plurality of concentrating portions 242 surrounding the target positioning portion 241. The target positioning portion 241 is represented by a plurality of adjacently arranged convex lens structures. Each concentrating portion 242 is presented in a single convex lens configuration. Moreover, the size of each concentrating portion 242 is smaller than any one of the target locating portions 241, and the concentrating portions 242 are arranged around the target positioning portion 241 in a plurality of stacked C-shaped patterns, and the above-mentioned C-type The number of the aspects is larger than the number of convex lens configurations included in the target positioning portion 241.

Therefore, the positioning member 24 of the present embodiment is designed to transmit the infrared signal to the signal intensity generated by the infrared sensor 21 via the target positioning portion 241, which is greater than the infrared signal transmitted through any of the light collecting portions 242. The signal intensity generated by the infrared sensor 21.

[Possible effects of the embodiments of the present invention]

In summary, the apparatus and method for detecting the orientation of a heat source provided by the embodiment of the present invention effectively utilizes an infrared signal to transmit to an infrared sensor via a target positioning portion, and the signal intensity generated by the infrared sensor is different from the target positioning portion. The signal intensity generated by the position of the positioning member and transmitted to the infrared sensor, and the reference determining portion of the infrared sensing device cooperate with the target positioning portion to make the external heat source at a specific time point (ie, the time point of the heat source) The heat source azimuth can be measured quickly.

Furthermore, since the manner in which the external heat source enters or leaves the scanning range of the infrared sensing device is determined, the transient heat source status updated in the first step (S110) is referenced by the single infrared sensor, so that the infrared sensing device scans within the range. There is an external heat source that can be detected. Accordingly, the apparatus and method for detecting the orientation of a heat source are capable of detecting and tracking a heat source azimuth for a static or dynamic external heat source, and then issuing a control signal in time to open and close an external device, such as a lamp or an electric fan. Or warning sounds....etc.

In addition, the hemispherical positioning member provided in this embodiment is capable of collecting infrared signals transmitted from any position to the infrared sensor, so that the infrared sensor is provided through the arrangement of the hemispherical positioning member. Wide range of signal reception, and easy to set up without obstructing the space.

Moreover, the device and method for detecting the orientation of the heat source provided by the embodiments of the present invention can greatly reduce the noise transmitted by the signal by eliminating the need to rotate the structure of the infrared sensor. The device for detecting the orientation of the heat source can also be provided with a bearing between the infrared sensor and the turntable to reduce the friction generated when the turntable rotates, thereby reducing the power consumption of the drive and improving the stability of receiving the infrared signal, thereby effectively The service life of the device for detecting the orientation of the heat source is increased.

The above are only the preferred embodiments of the present invention, and are not intended to limit the scope of the invention, and the equivalent variations and modifications of the scope of the invention are intended to be within the scope of the invention.

100‧‧‧Infrared sensing equipment

C‧‧‧ axis

θ x‧‧‧ heat source azimuth

S‧‧‧ scan range

P‧‧‧Azimuth

200‧‧‧External heat source

Claims (13)

An apparatus for detecting a heat source orientation, comprising: a control device, comprising: a circuit board; a microcontroller electrically connected to the circuit board; and a driving module electrically connected to the The circuit board, and the driving module is electrically connected to the controller via the circuit board; and a detecting device comprising: a turntable connected to the driving module; a reference component, the setting In the turntable; a positioning member mounted on the turntable, and the turntable can be self-rotating by an axis of the drive through the driving of the driving module; wherein the positioning member is provided with a target positioning portion; an infrared sensation a detector electrically connected to the circuit board for receiving an infrared signal transmitted to the detecting device via the positioning component, and the infrared signal is transmitted to the infrared sensor via the target positioning portion The signal strength is different from the signal intensity generated by the infrared signal transmitted to the infrared sensor via the positioning portion other than the target positioning portion; and a reference determining member, the electrical property thereof Connected to the control means, and with the reference member disposed on the turntable of the reference point as a reference when the rotation time of the start of a targeting portion. The apparatus for detecting a heat source orientation according to claim 1, wherein the positioning member is formed with a plurality of concentrating portions surrounding the target positioning portion, and the concentrating portions and the target positioning portion have a common focus. The focus is on the infrared sensor; and the configuration of the target positioning portion is different from the configuration of any concentrating portion, and the infrared signal can be transmitted to the infrared sensor via the target positioning portion. Signal intensity, which is different from the infrared signal transmitted to the infrared light via any concentrating portion The signal strength produced by the sensor. The device for detecting the orientation of a heat source according to claim 1, wherein the positioning member is formed with a surrounding portion surrounding the target positioning portion, the target positioning portion has a focus, and the focus falls on the infrared sensor. The configuration of the target positioning portion is different from the configuration of the surrounding portion, and the infrared signal can be transmitted to the signal intensity generated by the infrared sensor via the target positioning portion, which is different from the infrared signal via the surrounding And transmitted to the signal intensity generated by the infrared sensor. The apparatus for detecting a heat source orientation according to claim 1, wherein the detecting device comprises a focusing member corresponding to the positioning member, the focusing member is formed with a plurality of concentrating portions, and the positioning member is formed to surround a surrounding portion of the target positioning portion, the concentrating portions have a common focus, the focus falls on the infrared sensor; and the configuration of the target positioning portion is different from the configuration of any concentrating portion, and The infrared signal can be transmitted to the infrared sensor via any of the concentrating portion and the target positioning portion, and the infrared signal is transmitted to the infrared ray via the concentrating portion and the surrounding portion. The signal strength produced by the sensor. The device for detecting the orientation of the heat source, as defined in claim 1, defines a scanning range and further includes a detecting component; wherein the control device is electrically connected to the detecting component to detect whether an external heat source enters the Scan range. The device for detecting the orientation of a heat source according to claim 1, further comprising a casing, wherein the casing is provided with a direction indicator for facilitating the arrangement of the detected orientation when the device for detecting the orientation of the heat source is installed. Positioning. A method for detecting an orientation of a heat source, comprising: providing an infrared sensing device having a control device and a detecting device electrically connected to the control device; wherein the detecting device comprises: a target a positioning portion capable of self-rotating with an axis as an axis; an infrared sensor; a reference determining component electrically connected to the control device, and the reference determining component is used as a reference reference for a starting time point of the target positioning portion during rotation; the detecting step is as follows: Step 1: The control device The unit determining unit detects a unit time period (Tc) required for the target positioning portion to rotate one turn, and stops the target positioning portion from rotating, and is located at the reference determining unit; Step 2: using the infrared sensing device Performing heat source detection in a scan range thereof; and step 3: when the infrared sensor device detects that an external heat source enters its scan range, the control device drives the target positioning portion to rotate, and performs the following An orientation determining action of the external heat source: a plane having the axis as a normal is defined as an azimuth plane, and a position corresponding to the azimuth plane is defined as a reference on the azimuth plane centered on the axis Azimuth (0°); when an infrared signal emitted from the external heat source is transmitted to the infrared sensor via the target positioning portion, it corresponds to the unit time period A time point is defined as a heat source time point (Ts); when the external heat source is at the heat source time point, the target positioning portion is projected at the position of the azimuth plane, and an angle with respect to the reference azimuth is defined as a heat source orientation. An angle (θ x), and the heat source azimuth is obtained by the control device calculating the following equation: θ x=(Ts/Tc) x 360°; and step four: when the infrared sensing device detects the external heat source When leaving the scanning range, the target positioning portion can selectively stop the rotation and is located at the reference judgment piece. The method for detecting a heat source orientation according to claim 7, wherein the step 1 comprises: recording a transient heat source condition in the scanning range of the infrared sensing device. The method for detecting the orientation of a heat source according to claim 7, wherein in the step 3, when the infrared sensing device detects that an external heat source enters the scanning range, the control The device selectively emits an electrical signal to control an external device. The method for detecting the orientation of a heat source according to claim 7, wherein in the step 3, when the heat source azimuth is known, the control device can selectively emit an electrical signal to control an external device. The method for detecting a heat source orientation according to claim 7, wherein in the step 4, when the infrared sensing device detects that the external heat source is out of the scanning range, the control device can selectively emit an electrical property. Signal to control an external device. The method for detecting the orientation of a heat source according to claim 7, wherein in the steps 1 to 4, the target positioning portion is maintained in a rotated state after being driven. The method for detecting the orientation of a heat source according to claim 7, wherein in the step 1, when the target determining portion is rotated by one rotation, the target positioning portion is transmitted to the infrared sensor through the target positioning portion. The total number of clocks is defined as the unit time period, and the unit time period is R clocks; and in the third step, the heat source time point is the Qth clock, and R is greater than or equal to Q, and the equation is further defined as: θ x=(Q/R)x 360°.