WO2023124598A1 - 入侵探测器 - Google Patents

入侵探测器 Download PDF

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Publication number
WO2023124598A1
WO2023124598A1 PCT/CN2022/132012 CN2022132012W WO2023124598A1 WO 2023124598 A1 WO2023124598 A1 WO 2023124598A1 CN 2022132012 W CN2022132012 W CN 2022132012W WO 2023124598 A1 WO2023124598 A1 WO 2023124598A1
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WO
WIPO (PCT)
Prior art keywords
light
intrusion detector
movable part
circuit board
fresnel lens
Prior art date
Application number
PCT/CN2022/132012
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English (en)
French (fr)
Inventor
徐海东
徐国斌
李宣娇
Original Assignee
杭州海康威视数字技术股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Application filed by 杭州海康威视数字技术股份有限公司 filed Critical 杭州海康威视数字技术股份有限公司
Publication of WO2023124598A1 publication Critical patent/WO2023124598A1/zh

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    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B13/00—Burglar, theft or intruder alarms
    • G08B13/18—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength
    • G08B13/189—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength using passive radiation detection systems
    • G08B13/19—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength using passive radiation detection systems using infrared-radiation detection systems

Definitions

  • the present application relates to the field of security technology, in particular to an intrusion detector.
  • Intrusion detector also known as motion detector, mainly uses passive infrared detection technology (Passive Infrared), microwave detection technology or video technology to realize the detection of human body entering the defense zone.
  • Passive Infrared passive infrared detection technology
  • the front-end lens unit is used to collect the infrared signals of the human body in the defense area, and the signals are converged to the pyroelectric infrared sensor (Pyroelectric passive infrared sensor).
  • the pyroelectric infrared sensor is referred to as Pyro, and Pyro can The infrared signal is converted into an electrical signal.
  • the detector When a human body invades, the temperature of the intruding human body and the ambient background temperature will change, and the detector will send an alarm signal when it senses the change. That is to say, when a human body invades, because the temperature of the intruding human body is different from the ambient background temperature, the temperature rises after the detector senses the infrared radiation of the human body, thereby converting the thermal radiation into an electrical signal, that is, sending out an alarm signal.
  • intrusion detectors may fail due to occlusion, for example, being occluded by hard objects, painted paint or sprayed paint, etc. Therefore, there is an anti-masking technology for intrusion detectors.
  • the anti-occlusion technology in the intrusion detector generally forms a signal closed loop through a near infrared (Near Infra-red, NIR) transmitter and receiver, and determines whether the detector is blocked by an object by detecting changes in the signal characteristics. Or whether it is painted or sprayed.
  • NIR near infrared
  • the change of signal characteristics is mainly the change of signal strength.
  • the anti-shading viewing angle of the anti-shading component including the above-mentioned transmitter and receiver cannot cover the detection viewing angle, which leads to the limitation of the anti-shading range of the intrusion detector. limit.
  • the purpose of this application is to provide an intrusion detector to expand the anti-shading angle range of the intrusion detector.
  • the application provides the following technical solutions:
  • Embodiments of the present application provide an intrusion detector.
  • the intrusion detector includes a housing, a support frame, a detector body and an anti-shielding component.
  • the supporting frame is arranged in the housing, and the supporting frame includes a fixed part and a movable part, the fixed part is connected with the movable part, and the movable part can rotate relative to the fixed part.
  • the probe main body is provided on the movable part.
  • the anti-blocking component includes a transmitter and a receiver, the transmitter is configured to emit a detection signal for detecting a blocking object, and the receiver is configured to receive a reflection signal formed by the detection signal being reflected by the blocking object, and the transmitter is arranged on the visible on the moving part.
  • a support is provided inside the housing, and the movable part can rotate relative to the fixed part, that is to say, the movable part of the support frame is connected to the fixed part in an angle-adjustable manner , when the angle of the movable part changes relative to the fixed part, the detection angle of the detector body installed on the movable part will also change accordingly, so that the detection range of the detector body is larger.
  • the intrusion detector also includes an anti-shielding component, and the emitter in the anti-shielding component is arranged on the movable part.
  • the emitter can be directly arranged on the movable part, and can also be indirectly arranged on the movable part.
  • the movable part is fixedly connected with a printed circuit board, and both the transmitter and the receiver are fixed on the printed circuit board, which keeps the relative positional relationship between the transmitter and the receiver and the main body of the detector always unchanged,
  • the anti-blocking viewing angle of the anti-blocking component also changes accordingly, so that the anti-blocking viewing angle of the anti-blocking component and the detection viewing angle of the detector body can always be consistent.
  • the intrusion detector in the embodiment of the present application has a relatively wide range of anti-blocking angles.
  • the receiver is arranged on the movable part, or the receiver is arranged on the housing.
  • the movable part includes a turntable and a circuit board arranged on the turntable, the surface of the turntable is at least partly flat, and the circuit board is arranged on at least At a part of the plane, the circuit board is driven by the movable part to rotate;
  • the receiver is arranged on the movable part, and the probe body, the transmitter and the receiver are all arranged on the circuit board; or,
  • the receiver is arranged on other parts except the movable part, and the detector main body and the emitter are arranged on the circuit board.
  • the movable part includes a turntable and a circuit board arranged on the turntable
  • the fixed part includes a base and a support platform fixedly connected to the base, and the base is connected to the base
  • the casing is fixedly connected
  • the support table is provided with a shaft hole
  • the movable part further includes a rotating shaft fixed on the rotating table, and the rotating shaft passes through the shaft hole.
  • a light-transmitting window is arranged on the housing, and the intrusion detector further includes a Fresnel lens arranged on the light-transmitting window, and the Fresnel lens is arc-shaped Lens; the rotating shaft is parallel or collinear with the centroid axis of the arc-shaped lens, and the rotating table rotates clockwise or counterclockwise with the rotating shaft as an axis, and the rotating angle range of the rotating table is 90°.
  • the anti-shading component further includes a light guide column, one end of the light guide column abuts against the emitter and can rotate with the movable part, and the other end of the light guide column is close to The Fresnel lens.
  • the intrusion detector further includes an elastic member, one side of the elastic member abuts against the support platform, and the other side of the elastic member abuts against the rotation shaft.
  • the rotating table is provided with elastic positioning protrusions
  • the base is also provided with a plurality of positioning grooves matching the positioning protrusions
  • the movable part is in the stop-rotation working condition, and the positioning protrusion snaps into and is fixed in one of the positioning grooves.
  • the anti-blocking assembly further includes a light-shielding sleeve, one end of the light-shielding sleeve is fixedly connected to the circuit board, and the other end of the light-shielding sleeve is close to the Fresnel lens, the emitter is housed in the light-shielding sleeve, the light-guiding column is fixed in the light-shielding sleeve, one end of the light-guiding column is close to the emitter, and the light-guiding column is The other end is close to the Fresnel lens.
  • the anti-blocking assembly further includes a light-shielding sleeve
  • the light-shielding sleeve includes a first section and a second section connected to each other, and the second section is close to the Fresnel lens, the first section is fixedly connected with the circuit board, the first section is made of hard light-blocking material, the material of the second section is soft light-blocking material, and the light-blocking
  • the optical sleeve covers the entire light guide column, the connecting part of the first section and the circuit board is on the centroid axis of the arc lens, and the connecting part of the first section and the circuit board
  • the connecting portion of the second section is located at the rotation center of the movable part, and the end of the second section away from the first section is interference-fitted with the Fresnel lens.
  • a bar is formed on the housing, the bar is arc-shaped and extends along the circumferential direction of the Fresnel lens, and the bar separates the light-transmitting windows are a first light-transmitting area and a second light-transmitting area, the transmitter corresponds to the first light-transmitting area, and the receiver corresponds to the second light-transmitting area.
  • the blocking strip and the housing jointly define a limiting groove
  • the connecting portion of the light blocking sleeve with the circuit board is located on the centroid axis of the arc-shaped lens
  • the connecting part of the light-shielding sleeve and the circuit board is located at the rotation center of the movable part
  • the end of the light-guiding column protrudes from the light-shielding sleeve and is limited to the limit In the groove, there is a gap between the end of the light guide column and the Fresnel lens.
  • the intrusion detector further includes a blocking sheet, the blocking sheet is arc-shaped and arranged on the blocking strip, and the inner edge of the blocking sheet is in the shape of the arc-shaped lens.
  • the distance between the central axes is less than the length of the light-shielding sleeve.
  • the intrusion detector further includes an LED indicator light arranged on the circuit board, and the LED indicator light is housed in the light guide column.
  • the fixed part is fixed relative to the casing, the movable part rotates relative to the casing, and the turntable can stop at any position within its rotation range; or , the fixed part is fixed relative to the housing, the movable part rotates relative to the housing, the rotating table is provided with gears, and the rotating table stops at a fixed angle corresponding to the set gears .
  • the intrusion detector further includes a Fresnel lens and a seal, the seal is at least partially located between the housing and the Fresnel lens, and the housing and the Fresnel lens The Fresnel lens is fixedly set.
  • the housing includes at least one curved panel and an accommodation cavity
  • the support frame, the detector body and the anti-shading assembly are all arranged in the accommodation cavity
  • the A curved panel is located at least on one side of the housing
  • the Fresnel lens is curved
  • the Fresnel lens covers at least part of the accommodating cavity
  • the outer surface of the curved panel is in contact with the Fresnel lens.
  • the outer surface of the Erlenmeyer lens is set flush.
  • the detector body and the emitter are arranged on the movable part, so the relative positional relationship between the emitter and the detector body in the intrusion detector remains unchanged all the time, thus,
  • the anti-blocking viewing angle of the anti-blocking component also changes accordingly, so that the anti-blocking viewing angle of the anti-blocking component and the detection viewing angle of the detector body can always be consistent.
  • the intrusion detector has a relatively wide range of anti-blocking angles.
  • the anti-occlusion angle changes with the change of the detection angle of the detector body, which can ensure that the anti-occlusion angle is consistent with the current detection angle of view, thereby ensuring effective identification of whether there is an obstruction in the current detection range.
  • FIG. 1 is a schematic structural diagram of an intrusion detector provided by an embodiment of the present application.
  • Fig. 2 is a schematic diagram of the intrusion detector provided by the embodiment of the present application being blocked by foreign objects during operation;
  • Fig. 3 is another schematic diagram of the intrusion detector provided by the embodiment of the present application when there is a foreign object blocking
  • Fig. 4 is a schematic diagram of the intrusion detector provided by the embodiment of the present application when there is paint or spraying blocking during operation;
  • Fig. 5 is another schematic diagram of the intrusion detector provided by the embodiment of the present application when there is paint or spraying blocking during operation;
  • Fig. 6 is another schematic structural diagram of the intrusion detector provided by the embodiment of the present application.
  • Fig. 7 is a schematic structural diagram of an intrusion detector provided with positioning protrusions on the rotating table and positioning grooves on the support table provided by the embodiment of the present application;
  • Fig. 8 is a schematic structural diagram of an intrusion detector provided with a scale on the support platform provided by the embodiment of the present application;
  • Fig. 9 is a schematic structural diagram of a support platform of an intrusion detector provided by an embodiment of the present application.
  • Fig. 10 is a schematic structural diagram of an intrusion detector provided with a housing provided with a blocking sheet according to an embodiment of the present application;
  • Fig. 11 is a schematic diagram of the anti-blocking optical path of the intrusion detector provided by the embodiment of the present application.
  • FIG. 12 is another schematic diagram of the anti-blocking optical path of the intrusion detector provided by the embodiment of the present application.
  • Fig. 13 is a schematic diagram of the bar setting method of the intrusion detector provided by the embodiment of the present application.
  • Fig. 14 is a partially enlarged schematic diagram of the light-transmitting window of the intrusion detector provided by the embodiment of the present application.
  • Fig. 15 is an exploded view of the structure of the intrusion detector provided by the embodiment of the present application.
  • 100 housing; 101—curved panel; 102—accommodating chamber; 103—curved installation surface; 110—support frame; 111—fixed part; 1111—support platform; 11111—shaft hole; Base; 11121—positioning groove; 112—movable part; 1121—turning platform; 11211—positioning protrusion; 11213—scale; 1122—circuit board; Light area; 122—the second light-transmitting area; 130—Fresnel lens; 140—block bar; 150—limiting slot; 230—light guide column; 240—light shielding sleeve; 2401—first clamping part; 300—detector body; 400—protective layer; 410—second clamping part; 600—seal; 30—foreign matter; 40— Paint; Z01—detection angle of view; M—horizontal direction.
  • the embodiment of the present application proposes an intrusion detector.
  • the intrusion detector includes a housing 100 , a support frame 110 , a detector body 300 and an anti-shielding component 200 .
  • the support frame 110 is arranged in the housing 100, the support frame 110 includes a fixed part 111 and a movable part 112, the fixed part 111 is connected with the movable part 112, and the connection here is that the fixed part 111 is directly connected with the movable part 112, as other
  • the fixed part and the movable part can be connected indirectly or can be said to be connected through other components. connect.
  • the connections mentioned here and everywhere in the following texts can include direct connections and indirect connections.
  • the movable part 112 can rotate relative to the fixed part 111.
  • the movable part 112 is rotatable, and the fixed part 111 is fixed.
  • the movable part realizes the rotation through the rotation of the fixed part.
  • the movable part and the fixed part can be fixedly connected.
  • the movement of the movable part can be said to be the movement of the light transmission window 120 .
  • the detector main body 300 is arranged on the movable part 112 , so that the viewing angle of the intrusion detector changes with the rotation of the movable part 112 .
  • the anti-occlusion component 200 includes a transmitter 210 and a receiver 220, the transmitter 210 is configured to transmit a detection signal for detecting an obstruction, and the receiver 220 is configured to receive a reflection signal formed by the detection signal being reflected by the obstruction, and the transmitter 210 is configured to on the movable part 112 .
  • both the transmitter 210 and the receiver 220 may be disposed on the movable part 112 .
  • the receiver 220 may be disposed on the casing 100 .
  • transmitter 210 and receiver 220 are all arranged on the movable part 112
  • transmitter 210 and receiver 220 can be arranged on the movable part 112 directly, also can be arranged on indirectly on the movable part 112 .
  • the transmitter 210 and the receiver 220 are directly arranged on the movable part 112 means that the transmitter 210 and the receiver 220 are directly connected to the movable part 112, and no other components are provided.
  • the fact that the transmitter 210 and the receiver 220 are indirectly arranged on the movable part 112 means that the transmitter 210 and the receiver 220 are not directly connected to the movable part 112 , and other components may be provided.
  • a support frame 110 is disposed inside the housing 100 , and the movable part 112 and the fixed part 111 rotate relatively. That is to say, the movable part 112 of the support frame 110 is connected to the fixed part 111 in an angle-adjustable manner.
  • the detection viewing angle Z01 of 300 will also change accordingly, so that the detection range of the detector body 300 is larger.
  • the intrusion detector also includes an anti-masking assembly 200, and the transmitter 210 and the receiver 220 in the anti-masking assembly 200 are both arranged on the movable part 112, which makes the relative positions of the transmitter 210 and the receiver 220 and the detector body 300 The relationship remains unchanged, thus, when the detection viewing angle Z01 of the detector body 300 changes, the anti-blocking viewing angle of the anti-blocking component 200 also changes accordingly, thereby making the anti-blocking viewing angle of the anti-blocking component 200 and the detection angle Z01 change.
  • the detection angle Z01 of the detector body 300 can always be consistent. It can be seen that the intrusion detector in the embodiment of the present application has a relatively wide range of anti-blocking angles. Moreover, the anti-occlusion angle changes with the change of the detection angle of the detector body, which can ensure that the anti-occlusion angle is consistent with the current detection angle of view, thereby ensuring effective identification of whether there is an obstruction in the current detection range.
  • Fig. 2 schematically shows the situation that the intrusion detector is blocked by a foreign object 30, at this time the transmitter 210 in the anti-blocking assembly 200 sends out a detection signal, and the receiver 220 receives the reflection reflected by the foreign object 30 After the signal, it can be judged that the intrusion detector is blocked by foreign matter 30.
  • Fig. 4 shows the situation that the intrusion detector is painted or sprayed. When the intrusion detector is covered with paint 40 or other sprayed liquid, the anti-blocking The transmitter 210 in the component 200 sends out a detection signal, and the receiver 220 can judge that the intrusion detector is blocked after receiving the reflection signal reflected by the paint 40 or other sprayed liquid.
  • Figure 3 and Figure 5 show that when the detection angle Z01 of the intrusion detector changes, since the anti-blocking assembly 200 can rotate with the rotation of the rotating part 112, that is, it can rotate together with the detector main body 300, so the anti-blocking assembly 200
  • the detection angle of view can also change with the change of the detection angle of view Z01.
  • the detection angle of view of the anti-occlusion component 200 and the detection angle of view Z01 of the intrusion detector can always be consistent, thereby expanding the anti-occlusion detection angle of view of the intrusion detector.
  • the blocking objects in the embodiments of the present application include not only foreign objects, but also paint or liquid spraying objects. That is to say, the present application does not limit the type of the shelter.
  • the detection viewing angle Z01 of the intrusion detector is the detection range of the intrusion detector, which is specifically determined by the size of the field of view that the main body of the detector can detect.
  • the casing 100 is provided with a light-transmitting window 120, and the intrusion detector further includes a Fresnel lens 130 disposed on the light-transmitting window 120.
  • the Fresnel lens 130 is a curved lens, which can
  • the moving part 112 includes a turntable 1121 and a circuit board 1122 arranged on the turntable 1121 , and the detector main body 300 , the transmitter 210 and the receiver 220 are all arranged on the circuit board 1122 .
  • the fixed part 111 includes a base 1112 and a support platform 1111 fixedly connected to the base 1112.
  • the base 1112 is fixedly connected to the housing 100.
  • the support platform 1111 is provided with a shaft hole 11111.
  • the movable part 112 also includes a rotating shaft fixed on the rotating platform 1121.
  • the shaft 11212, the rotating shaft 11212 is passed through the shaft hole 11111.
  • the rotation axis 11212 is parallel or collinear with the centroid axis of the curved lens.
  • M is the horizontal direction
  • the turntable 1121 rotates along the horizontal direction
  • the rotatable angle range of the turntable 1121 is 90°.
  • the term "the turntable 1121 rotates in the horizontal direction” mentioned herein means that the turntable 1121 rotates clockwise or counterclockwise around the rotation axis 11212 .
  • the anti-shading assembly 200 further includes a light guide rod 230, one end of the light guide rod 230 abuts against the emitter 210 and can rotate with the movable part 112, and the other end of the light guide rod 230 is close to the Fresnel lens 130.
  • the surface of the turntable is at least partially flat
  • the circuit board is arranged on at least part of the plane of the turntable
  • the detector main body, the emitter and the The receiver is arranged on the circuit board
  • the circuit board can rotate in the horizontal direction driven by the movable part.
  • the turntable can stop at any position within its rotation range or the turntable is provided with gears, and the turntable stops at a set fixed angle.
  • Any cross-section of a curved lens can determine an arc, and the arc can determine a centroid. Then, the straight line formed by the centroids of multiple cross-sections of the curved lens is the centroid axis. .
  • the rotating shaft 11212 on the movable part 112 cooperates with the shaft hole 11111 on the fixed part 111 to form a hinge structure so that the movable part 112 can rotate relative to the fixed part 111 .
  • the rotation axis 11212 is parallel or collinear with the centroid axis of the arc-shaped lens, that is, the rotation axis 11212 is perpendicular to the cross-section of the arc-shaped lens, so that the rotation direction of the movable part 112 is the circumferential direction of the arc-shaped lens.
  • the rotation range of the movable part 112 can be set according to the angle range covered by the effective optical area of the Fresnel lens 130 . If the effective optical area of the Fresnel lens 130 covers a larger angle range, then the rotation range of the movable part 112 can be set to be larger. Conversely, if the effective optical area of the Fresnel lens 130 covers a smaller angle range, the rotation range of the movable part 112 can be set to be smaller.
  • the rotatable angle range of the turntable 1121 can be 90°. Specifically, when the detection angle of the detector body 300 itself is 90°, as the turntable 1121 rotates, the detection angle of the intrusion detector will It can reach 180°, which can cover a larger area.
  • the detector body 300, the transmitter 210 and the receiver 220 are all arranged on the circuit board 1122, and the circuit board 1122 is arranged on the turntable 1121, so that when the angle of the turntable 1121 changes, the circuit The board 1122 drives the detector main body 300, the transmitter 210 and the receiver 220 to turn synchronously, so that the detection angle Z01 and the anti-blocking angle of view change synchronously.
  • the detector main body 300 , the transmitter 210 and the receiver 220 are all arranged on the circuit board 1122 , which can also omit cumbersome wiring and make the structure relatively simple.
  • the transmitter 210 can transmit detection signals, the signal-to-noise ratio of near-infrared rays is very low, and the effective signal that can be received by the receiver 220 is very weak and is easily overwhelmed by other noises.
  • the detection signal emitted by the transmitter 210 can be guided to the Fresnel lens 130, and then transmitted through the Fresnel lens 130, thereby transmitting more detection signals to the external environment , so as to increase the emission intensity of the detection signal.
  • the intrusion detector further includes an elastic member (not shown in the figure), one side of the elastic member is against the supporting platform 1111 , and the other side of the elastic member is against the rotation shaft 11212 .
  • an elastic member (not shown in the figure)
  • one side of the elastic member is against the supporting platform 1111
  • the other side of the elastic member is against the rotation shaft 11212 .
  • the elastic member The elastic force can make the rotating platform 1121 stationary relative to the supporting platform 1111 , that is to say, the rotating platform 1121 can be fixed at any angle relative to the supporting platform 1111 , so as to avoid shaking between the rotating platform 1121 and the supporting platform 1111 .
  • the rotating table 1121 is provided with elastic positioning protrusions 11211, and the base 1112 is also provided with a plurality of positioning protrusions that match the positioning protrusions 11211.
  • the grooves 11121 when the movable part 112 stops rotating, the positioning protrusion 11211 can engage and be fixed in one of the positioning grooves 11121 .
  • the number of positioning grooves 11121 is 9. When the positioning protrusion 11211 is located in the middle positioning groove 11121, the detection angle of the intrusion detector is straight ahead.
  • the intrusion detector can detect the edge area, that is to say, the intrusion detector can detect the area in other orientations.
  • the positioning protrusion 11211 has elasticity, so it does not affect the rotation of the turntable 1121.
  • the positioning protrusion 11211 can be snapped into any positioning groove 11121.
  • a scale 11112 is provided on the supporting table 1111, and a scale 11213 compatible with the scale 11112 is provided on the rotating table 1121, so that when the rotating table 1121 rotates, the Read the angle of rotation on the ruler 11112 in real time.
  • the scale 11112 may include 9 numbers from 1 to 9, where each number corresponds to an angle.
  • the rotatable angle range of the turntable 1121 is 90 degrees.
  • the angle difference corresponding to adjacent numbers may be 10 degrees.
  • the scale 11213 adapted to the scale 11112 may include an angle mark, and the angle mark may be located in the center, corresponding to the front of the detection angle of view of the intrusion detector. After the turntable 1121 rotates, which number on the scale 11112 is aligned with the angle mark means that the direction of the current detection angle of view of the intrusion detector is the same as the angle corresponding to the number.
  • the intrusion detector may further include a driving device (not shown in the figure), and the driving device is connected with the rotating shaft 11212 to drive the rotating shaft 11212 to rotate relative to the fixed part 111 .
  • the rotating shaft 11212 rotates, it can drive the rotating table 1121 and the circuit board 1122 on the rotating table 1121 to rotate synchronously.
  • the driving device can be a rotary motor, which can be installed on the fixed part 111.
  • the output end of the rotary motor can be connected with the rotating shaft 11212, so that the movable motor can be driven by the rotary motor in the working state.
  • the part 112 rotates relative to the fixed part 111 .
  • the driving device may also be a combined structure of a motor and a transmission assembly, wherein the transmission assembly may be, for example, a gear transmission assembly, a synchronous belt transmission assembly, and the like.
  • the transmitter 210 is a near-infrared transmitter capable of emitting near-infrared rays
  • the receiver 220 is a near-infrared receiver.
  • the detection signal emitted by the transmitter 210 for detecting an obstruction is The near-infrared rays.
  • the receiver 220 is configured to receive reflected near-infrared rays that are formed when the near-infrared rays emitted by the transmitter 210 are reflected by an obstruction.
  • the human body Since the human body will radiate infrared rays in the 6-15 ⁇ m band, when the human body enters the detection range of the detector, the infrared rays radiated by the human body will pass through the Fresnel lens 130, and the Fresnel lens 130 will focus this part of the infrared energy to the detector The main body 300, so that the detector main body 300 detects the intrusion of the human body.
  • near infrared near infra-red
  • NIR near infra-red
  • the infrared ray radiated by the human body will not be received by the receiver 220 and be regarded as an obstruction, which will not cause false alarms.
  • the anti-shading assembly 200 may further include a light-shielding sleeve 240, one end of the light-shielding sleeve 240 is fixedly connected to the circuit board 1122, and the other end of the light-shielding sleeve 240 is close to the Fresnel lens 130, the emitter 210 is housed in the light blocking sleeve 240, the light guiding rod 230 is fixed in the light blocking sleeve 240, one end of the light guiding rod 230 is close to the emitter 210, and the other end of the light guiding rod 230 is close to the Fresnel lens 130 .
  • the reflection signal of the detection signal generated by the occlusion will be very weak, that is to say, the detection signal emitted by the transmitter 210 is reflected by the occlusion object, and the reflection signal generated is generally relatively weak in intensity, so it is necessary to correct the detection signal on the circuit.
  • the reflected signal generated by it is sufficiently amplified to ensure accurate reading of the signal value of the reflected signal.
  • this part of the stray signal will be directly received by the receiver 220.
  • Scattered signals can easily cause saturation of the receiver 220 , and further lead to failure of the function of the anti-shading component 200 .
  • the stray signal is directly received by the receiver 220 inside the intrusion detector means that the stray signal enters the receiver 220 and is received by the receiver 220 after being reflected by various components inside the intrusion detector.
  • a light-blocking sleeve 240 can also be provided outside the light-guiding column 230, and both the transmitter 210 and the light-guiding column 230 are located in the light-blocking sleeve 240, thereby effectively preventing stray signals from being transmitted to the intrusion detector.
  • the internal propagation of so as to improve the detection accuracy of the anti-occlusion component 200 .
  • Figure 11 is a schematic diagram of the anti-blocking optical path when the intrusion detector detects the front, the detection signal emitted by the transmitter 210 on the movable part 112 is emitted from the Fresnel lens 130 through the light guide column 230,
  • the light shielding sleeve 240 provided outside the light guide column 230 can prevent the detection signal from entering the interior of the intrusion detector from the side wall of the light guide column 230 .
  • the detection signal is emitted from the Fresnel lens 130 , it is reflected by an obstruction, and the reflected signal enters the interior of the intrusion detector from the Fresnel lens 130 and is received by the receiver 220 .
  • Figure 12 is a schematic diagram of the anti-blocking optical path when the intrusion detector detects other directions, the detection signal emitted by the transmitter 210 on the movable part 112 is emitted from the Fresnel lens 130 through the light guide column 230,
  • the light shielding sleeve 240 provided outside the light guide column 230 can prevent the detection signal from entering the interior of the intrusion detector from the side wall of the light guide column 230 .
  • the detection signal is emitted from the Fresnel lens 130 , it is reflected by an obstruction, and the reflected signal enters the interior of the intrusion detector from the Fresnel lens 130 and is received by the receiver 220 .
  • the receiver 220, the light guide column 230 and the light blocking sleeve 240 can rotate together with the main body of the detector, thereby ensuring that the anti-blocking detection of each orientation can be improved.
  • the detection accuracy of the anti-occlusion component 200 can be improved.
  • a hollow mounting post structure (not shown in the figure) can be provided on the circuit board 1122, and one end of the light-shielding sleeve 240 is sleeved on the mounting post structure and combined with the mounting post structure, for example, can be formed with an interference
  • the light-shielding sleeve 240 is fixedly connected to the circuit board 1122 by means of socketing in a matching manner, bonding by means of gluing, and the like.
  • the light blocking sleeve 240 can be used as a fixing bracket of the light guide column 230 to facilitate fixing the light guide column 230 .
  • a light-shielding gasket, foam, etc. can be arranged at the connection between the light-shielding sleeve 240 and the circuit board 1122 to cover the gap.
  • the light-shielding sleeve 240 can also be a sleeve made of elastic soft material, which can be sleeved on the light guide column 230, in order to avoid stray signals from the light-shielding sleeve 240 and the circuit board 1122.
  • the gap enters the interior of the intrusion detector, and the connection between the light-shielding sleeve 240 and the circuit board 1122 can be an interference fit, so that the soft light-shielding sleeve 240 can block the gap.
  • the light guide rod 230 needs to be fixedly connected to the circuit board 1122 .
  • a first clamping portion 2401 is provided on the light-shielding sleeve 240 , and a groove matching the first clamping portion 2401 is provided on the light guide column 230 .
  • the light guide column 230 can be fixed on the light-shielding sleeve 240 by snapping the first engaging portion 2401 into the groove.
  • the intrusion detector can also be provided with a protective layer 400 , and the light-shielding sleeve 240 is fixedly connected with the protective layer 400 .
  • the protective layer 400 is provided with a second clamping part 410
  • the rotating table 1121 is provided with a groove suitable for the second clamping part 410
  • the circuit board 1122 is provided with a groove suitable for the second clamping part 410 .
  • the protection layer 400 can protect the circuit board 1122 and can prevent dust, insects, short circuit and water.
  • the light-shielding sleeve 240 and the protective layer 400 can also be the same device, so the materials of the light-shielding sleeve 240 and the protective layer 400 can be light-blocking or light-absorbing materials, so as to prevent detection signals from intruding into the detector.
  • the light-shielding sleeve 240 is made of soft material, since the protective layer 400 generally adopts hard materials, etc., which can play a better protective role, for example, using hard plastic parts, etc., in this case, if the two are two As a device, the light-shielding sleeve 240 can be quietly matched with the protective layer 400, for example, the two can be bonded together. If the two are one device, injection molding can be used, as long as the light-shielding sleeve 240 is made of soft material, and the protective layer 400 is made of hard material, which is not specifically limited here.
  • the anti-blocking assembly 200 may also include a light-shielding sleeve 240, the emitter 210 is housed in the light-shielding sleeve 240, the light-guiding column 230 is fixed in the light-shielding sleeve 240, and the light-guiding column One end of the light guide rod 230 is close to the emitter 210 , and the other end of the light guide rod 230 is close to the Fresnel lens 130 .
  • the light-shielding sleeve 240 includes a first section and a second section connected to each other.
  • the first section is fixedly connected to the circuit board 1122 , and the part of the light-shielding sleeve 240 connected to the Fresnel lens 130 is the second section. Further, the first section is made of hard light-blocking material, and the material of the second section is soft light-blocking material.
  • the light-shielding sleeve 240 covers the entire light guide column 230 , the connecting part of the first section and the circuit board 1122 is on the centroid axis of the arc-shaped lens, and the connecting part of the first section and the circuit board is located at the rotation of the movable part. In the center, the end of the second segment away from the first segment is interference fit with the Fresnel lens 130 .
  • the connecting portion of the first section and the circuit board 1122 is on the centroid axis of the arc lens, so that when the movable part 112 rotates, the light blocking sleeve 240 and the Fresnel lens The distance between 130 does not change.
  • the second section uses a flexible light-blocking material, and the end of the second section away from the first section is in interference fit with the Fresnel lens 130, so that the process of rotating the movable part 112 can be avoided.
  • a gap is formed between the middle Fresnel lens 130 and the light-shielding sleeve 240 , thereby further preventing stray signals from entering the interior of the intrusion detector, so as to further improve the detection accuracy of the anti-shading component 200 .
  • the boundary between the first section and the second section of the light-shielding sleeve 240 can be set according to actual needs.
  • One of the principles is to make the part of the light-shielding sleeve 240 in contact with the Fresnel lens 130 Just be soft material.
  • the first section and the second section can be made into shapes separately, and then the two can be combined together.
  • the first section can also be injection-molded with a hard rubber material first, and then the second section can be produced by secondary injection molding of a soft rubber material on the basis of the first section.
  • the color of the light-shielding sleeve 240 is preferably black, because black can absorb light better, so when the light-shielding sleeve 240 is thinner, the black light-shielding sleeve 240 can more effectively block stray signals and avoid Spurious signals propagate inside the intrusion detector.
  • the wall thickness of the light-shielding sleeve 240 When the wall thickness of the light-shielding sleeve 240 is thicker, its color can also be brown, red, etc., when the wall thickness of the light-shielding sleeve 240 reaches a certain thickness, the light-shielding sleeve 240 of this thickness can block stray signals from Among them, at this time, the light blocking sleeve 240 can be other lighter colors, which are all reasonable, and a better light blocking effect can also be obtained.
  • different structures can be set on the housing to block the detection signal from the light guide column, so as to avoid the detection signal from The gap between the light guide column and the housing enters into the interior of the intrusion detector.
  • a groove is generally provided on the housing at a position corresponding to the light guide column, so that the light guide column can extend into the groove, and the concave The side wall of the groove can prevent the detection signal from entering the interior of the intrusion detector from the gap between the light guide column and the housing.
  • some installation methods of the intrusion detector may not be able to adopt the structure in which the light guide column extends into the groove.
  • the blocking strip can be arranged on a side of the groove close to the main body of the detector, so as to prevent detection signals from entering the main body of the detector.
  • the structure in which the light guide column extends into the groove does not affect the installation of the intrusion detector, it is possible to adopt the structure in which the light guide column extends into the groove, and set a barrier on one side of the groove. Bar, to further prevent the detection signal from entering the interior of the intrusion detector from the gap between the light guide column and the housing.
  • a bar 140 is formed on the casing 100.
  • the bar 140 is arc-shaped and extends along the circumferential direction of the Fresnel lens 130.
  • the bar 140 will
  • the light transmission window 120 is divided into a first light transmission area 121 and a second light transmission area 122, the transmitter 210 corresponds to the first light transmission area 121, the receiver 220 corresponds to the second light transmission area 122, the bar 140 and the housing 100 jointly define a limiting slot 150 .
  • the connecting part of the light-shielding sleeve 240 and the circuit board 1122 is on the centroid axis of the arc lens, and the connecting part of the light-shielding sleeve 240 and the circuit board 1122 is located at the rotation center of the movable part 112, and the light-guiding column 230 The end is limited in the limiting groove 150 , and there is a gap between the end of the light guiding rod 230 and the Fresnel lens 130 .
  • the connecting portion of the light-shielding sleeve 240 and the circuit board 1122 is on the centroid axis of the arc-shaped lens, so that when the movable part 112 rotates, the light-shielding sleeve 240 approaches Fresnel
  • the distance between one end of the Fresnel lens 130 and the Fresnel lens 130 is constant.
  • the end of the light guide column 230 is limited in the limiting groove 150 defined by the bar 140 and the housing 100, and the end of the light guide column 230 is always facing the first light-transmitting area 121, and the receiver 220 may be directly opposite to the second light-transmitting region 122, as long as the receiver 220 can receive a reflected signal with sufficient intensity.
  • the side wall of the limiting groove 150 (a part of the structure of the bar 140 and a part of the structure of the housing 100 ) can form a certain shield at the end of the light guide column 230 , thereby reducing the number of parts guided to the end of the light guide column 230 to a certain extent. Part of the detection signal is received by the receiver 220 directly.
  • the intrusion detector further includes a blocking sheet 160, which is arc-shaped and arranged on the bar 140, and the inner edge of the blocking sheet 160 is in the shape of an arc lens.
  • the distance between the central axes is less than the length of the light-shielding sleeve 240 .
  • the detection signal can be reduced to a certain extent from being directly received by the receiver 220 .
  • some detection signals will still return to the interior of the intrusion detector, especially through the gap between the light-shielding sleeve 240 and the housing 100 or the blocking strip 140 .
  • the arrangement of the blocking piece 160 expands the shielding range of the detection signal by the limiting slot 150 , which can further prevent the detection signal from being received by the receiver 220 after propagating inside the intrusion detector.
  • the distance from the inner edge of the blocking sheet 160 to the centroid axis of the arc-shaped lens is less than the length of the light-shielding sleeve 240, so that the shielding range of the blocking sheet 160 can be guaranteed to cover the end of the light-shielding sleeve 240, thereby effectively
  • the detection signal is prevented from leaking from the gap between the light-shielding sleeve 240 and the housing 100 or the blocking strip 140 and being received by the receiver 220 .
  • the intrusion detector further includes an LED indicator light (not shown in the figure) arranged on the circuit board 1122 , and the LED indicator light is housed in the light guide column 230 .
  • the light guide column 230 can simultaneously guide the detection signal emitted by the transmitter 210 and the light emitted by the LED indicator to the Fresnel lens 130 and then exit the intrusion detector, thereby improving the performance of the light guide column 230. Utilization rate, without having to set up a light guide structure for the LED indicator light, can optimize the internal space of the intrusion detector product, is conducive to the miniaturization design of the product, and is also conducive to reducing the production cost of the intrusion detector.
  • the intrusion detector further includes a seal 600, the seal 600 is at least partially located between the housing 100 and the Fresnel lens 130, and the housing 100 and the Fresnel lens 130 is fixedly arranged.
  • the housing 100 includes at least one curved panel 101 and a housing chamber 102.
  • the support frame 110, the detector body 300 and the anti-shading assembly 200 are all arranged in the housing chamber 102.
  • the curved panel 101 is at least located on the housing 100.
  • the Fresnel lens 130 is arc-shaped, and the Fresnel lens 130 covers at least part of the accommodating cavity 102 , and the outer surface of the arc-shaped panel 101 is flush with the outer surface of the Fresnel lens 130 .
  • the housing 100 and the Fresnel lens 130 are fixedly connected, and the two can be directly fixed together, or indirectly fixed together by setting a connecting piece between the two.
  • the sealing member 600 between the lenses 130 is only one embodiment.
  • the sealing member 600 may be a sealing member made of materials such as rubber and resin, which is not specifically limited here.
  • its casing 100 has a curved panel 101, and the Fresnel lens 130 is also curved.
  • the Fresnel lens 130 covers the housing cavity 102 of the casing 100,
  • the curved panel 101 of the housing 100 is flush with the outer surface of the Fresnel lens 130 , so that the aesthetic appearance of the intrusion detector can be improved, so as to obtain a beautiful and elegant appearance of the overall curved surface.
  • FIG. 10 is a schematic diagram of the structure of the intrusion detector after installation. It can be seen that when this kind of intrusion detector is used in areas with high air humidity, due to its good waterproof function The service life of the intrusion detector can thus be increased.
  • the outer surface of the curved panel 101 is flush with the outer surface of the Fresnel lens 130 , and a certain installation error can be allowed. That is to say, in the case of a certain installation error, it can still be regarded as the flush arrangement in this embodiment. Wherein, the installation error does not exceed 10% of the radius of the curved panel 101 .
  • the embodiment of another aspect of the present application provides a method for installing an intrusion detector.
  • This installation method includes:
  • the housing is provided with a window area, the housing includes two oppositely arranged arc-shaped panels and an arc-shaped mounting surface 103 arranged adjacent to the arc-shaped panels, and the window area is located between the two arc-shaped panels , the radius of the curved panel is greater than the radius of the curved mounting surface 103;
  • a Fresnel lens is provided, and the thickness of the Fresnel lens is equal to the difference between the radius of the curved panel and the radius of the curved mounting surface 103;
  • the Fresnel lens is mounted on the housing so that the Fresnel lens covers the window area and the Fresnel lens is in close contact with the two arc-shaped mounting surfaces 103 .
  • Fig. 10 is a schematic diagram of the structure of the installed intrusion detector. It can be seen that through the installation method of the intrusion detector in the embodiment of the present application, the surface of the Fresnel lens 130 of the installed intrusion detector can be It can be flush with the surface of the curved panel 101 , thereby improving the aesthetic appearance of the intrusion detector, so as to obtain a beautiful and generous appearance of the overall curved surface.
  • the embodiment of the present application also provides another intrusion detector, which includes:
  • a support frame the support frame is arranged in the housing, the support frame includes a fixed part and a movable part, the fixed part is connected with the movable part, and the movable part rotates relative to the fixed part ;
  • An anti-occlusion assembly includes a transmitter and a receiver, the transmitter is configured to emit a detection signal for detecting an obstruction, and the receiver is configured to receive the detection signal formed by the reflection of the obstruction Reflecting the signal, the transmitter is arranged on the movable part, and the receiver is arranged on the housing.
  • the movable part includes a turntable and a circuit board arranged on the turntable, the detector body and the emitter are arranged on the circuit board, the surface of the turntable is at least partially flat, and the circuit board is arranged on at least the turntable
  • the receiver is electrically connected to the circuit board, and the circuit board is driven by the movable part to rotate along the horizontal direction.
  • the main body of the detector and the transmitter can rotate with the drive of the movable part, while the receiver is fixed, and the receiver is electrically connected with the circuit board so that the receiver can work normally.
  • the electrical connection wire between the receiver and the circuit board can pass through the movable part and the fixed part to electrically connect the two.
  • the size of the turntable can be as small as possible on the premise that the detector body, transmitter and circuit board can be installed, or it can be set to a material that can transmit reflected signals. is reasonable.

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Abstract

一种入侵探测器，包括：壳体（100）；支撑架（110），支撑架（110）设置在壳体（100）内，支撑架（110）包括固定部（111）和可动部（112），固定部（111）与可动部（112）连接，可动部（112）与固定部（111）相对转动；探测器主体（300），探测器主体（300）设置在可动部（112）上；以及防遮挡组件（200），防遮挡组件（200）包括发射器（210）和接收器（220），发射器（210）配置为发射用于探测遮挡物的探测信号，接收器（220）配置为接收探测信号被遮挡物反射而形成的反射信号，发射器（210）设置在可动部（112）上。

Description

入侵探测器
本申请要求于2021年12月30日提交中国专利局、申请号为202111683229.6发明名称为“入侵探测器”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请涉及安防技术领域，特别涉及入侵探测器。
背景技术
本部分提供的仅仅是与本申请相关的背景信息，其并不必然是现有技术。
入侵探测器(intrusion detector)，又称移动报警器(motion detector)，主要是利用被动红外探测技术(Passive Infrared)、微波探测技术或者视频技术实现对人体进入防区的探测。其中主要是采用被动红外探测技术，利用前端的透镜单元收集防区内的人体红外信号，并将信号汇聚至热释电红外传感器(Pyroelectric passive infrared sensor)，热释电红外传感器简称Pyro，Pyro能将红外信号转化为电信号作用。当有人体入侵时，入侵人体温度与环境背景温度产生变化，探测器感应到该变化即会发出报警信号。也就是说，当有人体入侵时，由于入侵人体温度与环境背景温度不同，探测器感应到人体红外辐射后温度升高，从而将热辐射转换为电信号，即发出报警信号。
然而，入侵探测器有可能因遮挡而失效，例如，被硬物遮挡、被涂刷的漆或喷涂的颜料遮挡等，因此，便有了入侵探测器的防遮挡技术。相关技术中，入侵探测器中的防遮挡技术一般是通过近红外(Near Infra-red，NIR)发射器和接收器，形成信号闭环，通过检测该信号特征变化而判定探测器是否有被物体遮挡或者是否有被刷漆、喷涂的情况，其中，信号特征变化主要是信号的强弱变化。但是在相关技术中，当入侵探测器的探测视角发生变化时，包括上述发射器和接收器的防遮挡组件的防遮挡视角便不能够覆盖探测视角，进而导致入侵探测器的防遮挡的范围受到限制。
发明内容
本申请的目的是提供一种入侵探测器，以扩大入侵探测器的防遮挡的角度范围。为实现上述目的，本申请提供如下技术方案：
本申请的实施例提出一种入侵探测器。入侵探测器包括壳体、支撑架、探测器主体和防遮挡组件。支撑架设置在壳体内，支撑架包括固定部和可动部，固定部与可动部连接，可动部能够相对固定部转动。探测器主体设置在可动部上。防遮挡组件包括发射器和接收器，发射器配置为发射用于探测遮挡物的探测信号，接收器配置为接收探测信号被遮挡物反射而形成的反射信号，所述发射器设置在所述可动部上。
根据本申请实施例中的入侵探测器，其壳体的内部设置有支撑件，可动部能够相对固定部相对转动，也就是说支撑架的可动部以角度可调的方式与固定部连接，在可动部相对于固定部发生角度变化时，安装在可动部上的探测器主体的探测视角也会发生相应的变化，从而使探测器主体可探测范围较大。另外，入侵探测器还包括防遮挡组件，防遮挡组件中的发射器设置在可动部上，在本实施例中，发射器可以直接设置在可动部上，也可以间接设置在可动部上，例如，可动部固定连接有印制电路板，发射器和接收器均固定在该印制电路板上，这使得发射器和接收器与探测器主体的相对位置关系始终保持不变，由此，在探测器主体的探测视角发生变化的同时，防遮挡组件的防遮挡视角也随之发生变化，从而，使防遮挡组件的防遮挡视角与探测器主体的探测视角可以始终保持一致。可见，本申请实施例中的入侵探测器，具有较为广阔的防遮挡角度范围。
另外，根据本申请实施例的，还可以具有以下附加的技术特征：
在本申请的一些实施例中，所述接收器设置在所述可动部上，或，所述接收器设置在所述壳体上。
在本申请的一些实施例中，所述可动部包括转动台和设置在所述转动台的电路板，所述转动台表面至少部分呈平面，所述电路板设置在所述转动台的至少部分平面处，所述电路板在所述可动部的带动下进行转动；
所述接收器设置在所述可动部上，所述探测器主体、所述发射器和所述接收器均设置在所述电路板上；或，
所述接收器设置在除所述可动部外的其他部件上，所述探测器主体和所述发射器设置在所述电路板上。
在本申请的一些实施例中，所述可动部包括转动台和设置在所述转动台上的电路板，所述固定部包括底座和与所述底座固定连接的支撑台，所述底座与所述壳体固定连接，所述支撑台上设置有轴孔，所述可动部还包括固定在所述转动台上的转动轴，所述转动轴穿设于所述轴孔。
在本申请的一些实施例中，所述壳体上设置有透光窗，所述入侵探测器还包括设置在所述透光窗上的菲涅尔透镜，所述菲涅尔透镜为弧形透镜；所述转动轴与所述弧形透镜的形心轴线平行或者共线，所述转动台以所述转动轴为轴，顺时针或逆时针转动，所述转动台可转动的角度范围为90°。
在本申请的一些实施例中，所述防遮挡组件还包括导光柱，所述导光柱的一端与所述发射器相抵接且能够随所述可动部转动，所述导光柱的另外一端靠近所述菲涅尔透镜。
在本申请的一些实施例中，所述入侵探测器还包括弹性件，所述弹性件的一侧与所述支撑台相抵，所述弹性件的另外一侧与所述转动轴相抵。
在本申请的一些实施例中，所述转动台上设置有具有弹性的定位凸起，所述底座上还设置有与所述定位凸起相适配的多个定位凹槽，所述可动部处于停止转动工况，所述定位凸起卡接并固定在其中一个所述定位凹槽中。
在本申请的一些实施例中，所述防遮挡组件还包括挡光套管，所述挡光套管的一端固定连接在所述电路板上，所述挡光套管的另一端靠近所述菲涅尔透镜，所述发射器被罩设在所述挡光套管内，所述导光柱被固定在所述挡光套管内，所述导光柱的一端靠近所述发射器，所述导光柱的另一端靠近所述菲涅尔透镜。
在本申请的一些实施例中，所述防遮挡组件还包括挡光套管，所述挡光套管包括彼此相连的第一部段和第二部段，所述第二部段靠近所述菲涅尔透镜，所述第一部段与所述电路板固定连接，所述第一部段为硬质挡光材料，所述第二部段的材质为软质挡光材料，所述挡光套管覆盖整个所述导光柱，所述第一部段的与所述电路板的连接部位处于所述弧形透镜的形心轴线上，且所述第一部段的与所述电路板的连接部位位于所述可动部的转动中心，所述第二部段的远离所述第一部段的一端与所述菲涅尔透镜过盈配合。
在本申请的一些实施例中，所述壳体上形成有挡条，所述挡条呈弧形且延所述菲涅尔透镜的圆周方向延伸，所述档条将所述透光窗分隔为第一透光区域和第二透光区域，所述发射器与所述第一透光区域对应，所述接收器与所述第二透光区域对应。
在本申请的一些实施例中，所述挡条和所述壳体共同限定出限位槽，所述挡光套管的与所述电路板的连接部位处于所述弧形透镜的形心轴线上，且所述挡光套管的与所述电路板的连接部位位于所述可动部的转动中心，所述导光柱的端部伸出所述挡光套管且限制在 所述限位槽内，所述导光柱的端部与所述菲涅尔透镜之间具有间隙。
在本申请的一些实施例中，所述入侵探测器还包括阻挡片，所述阻挡片呈弧形且设置在所述挡条上，所述阻挡片的内边缘到所述弧形透镜的形心轴线的距离小于所述挡光套管的长度。
在本申请的一些实施例中，所述入侵探测器还包括设置在所述电路板上的LED指示灯，所述LED指示灯被罩设在所述导光柱内。
在本申请的一些实施例中，所述固定部相对于所述壳体固定，所述可动部相对于所述壳体转动，所述转动台在其转动范围内能够在任一位置停止；或者，所述固定部相对于所述壳体固定，所述可动部相对于所述壳体转动，所述转动台设置档位，所述转动台在所设置的档位对应的固定角度处停止。
在本申请的一些实施例中，所述入侵探测器还包括菲涅尔透镜和密封件，所述密封件至少部分位于所述壳体与所述菲涅尔透镜之间，所述壳体与所述菲涅尔透镜固定设置。
在本申请的一些实施例中，所述壳体包括至少一个弧形面板和容纳腔，所述支撑架、所述探测器主体和所述防遮挡组件均设置在所述容纳腔内，所述弧形面板至少位于所述壳体的一侧，所述菲涅尔透镜呈弧形，所述菲涅尔透镜覆盖至少部分所述容纳腔，所述弧形面板的外表面与所述菲涅尔透镜的外表面平齐设置。
可见，本申请的实施例提出的入侵探测器，探测器主体和发射器设置在可动部上，所以入侵探测器中的发射器与探测器主体的相对位置关系始终保持不变，由此，在探测器主体的探测视角发生变化的同时，防遮挡组件的防遮挡视角也随之发生变化，从而，使防遮挡组件的防遮挡视角与探测器主体的探测视角可以始终保持一致。入侵探测器具有较为广阔的防遮挡角度范围。并且，防遮挡角度随着探测器主体的探测视角的改变而变化，可以保证在防遮挡角度与当前探测视角一致，从而保证有效识别到当前探测范围是否存在遮挡物。
附图说明
为了更清楚地说明本发明实施例和现有技术的技术方案，下面对实施例和现有技术中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1为本申请实施例提供的一种入侵探测器的结构示意图；
图2为本申请实施例提供的入侵探测器在工作时存在异物阻挡的一种示意图；
图3为本申请实施例提供的入侵探测器在工作时存在异物阻挡的另一种示意图；
图4为本申请实施例提供的入侵探测器在工作时存在油漆或喷涂阻挡的一种示意图；
图5为本申请实施例提供的入侵探测器在工作时存在油漆或喷涂阻挡的另一种示意图；
图6为本申请实施例提供的入侵探测器的另一种结构示意图；
图7为本申请实施例提供的转动台设置有定位凸起及支撑台设置有定位凹槽的入侵探测器的一种结构示意图；
图8为本申请实施例提供的支撑台设置有刻度尺的入侵探测器的一种结构示意图；
图9为本申请实施例提供的入侵探测器的支撑台的一种结构示意图；
图10为本申请实施例提供的壳体设置有阻挡片的入侵探测器的一种结构示意图；
图11为本申请实施例提供的入侵探测器的防遮挡光路的一种示意图；
图12为本申请实施例提供的入侵探测器的防遮挡光路的另一种示意图；
图13为本申请实施例提供的入侵探测器的挡条设置方式的一种示意图；
图14为本申请实施例提供的入侵探测器的透光窗的局部放大示意图；
图15为本申请实施例提供的入侵探测器的一种结构爆炸图。
附图中各标记表示如下：
100—壳体；101—弧形面板；102—容纳腔；103—弧形安装面；110—支撑架；111—固定部；1111—支撑台；11111—轴孔；11112—刻度尺；1112—底座；11121—定位凹槽；112—可动部；1121—转动台；11211—定位凸起；11213—标尺；1122—电路板；11212—转动轴；120—透光窗；121—第一透光区域；122—第二透光区域；130—菲涅尔透镜；140—挡条；150—限位槽；160—阻挡片；200—防遮挡组件；210—发射器；220—接收器；230—导光柱；240—挡光套管；2401—第一卡接部；300—探测器主体；400—保护层；410—第二卡接部；600—密封件；30—异物；40—油漆；Z01—探测视角；M—水平方向。
具体实施方式
为使本发明的目的、技术方案、及优点更加清楚明白，以下参照附图并举实施例，对本发明进一步详细说明。显然，所描述的实施例仅仅是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。
如图1-图5所示，本申请实施例提出了一种入侵探测器。入侵探测器包括壳体100、支撑架110、探测器主体300和防遮挡组件200。支撑架110设置在壳体100内，支撑架110包括固定部111和可动部112，固定部111与可动部112连接，该处连接是固定部111与可动部112直接连接，作为其它实施方式，固定部与可动部可间接连接或者可以说是通过其他部件实现连接，例如，固定部和可动部之间设置中间连接部，该中间连接部分别与固定部、可动部直接连接。本处以及以下全文各处所说的连接都可包括直接连接和间接连接。
可动部112能够相对固定部111相对转动，本实施例中，可动部112可转动，固定部111固定不动，作为其他实时方式，可动部通过固定部的转动而实现转动，在这种情况下，可动部与固定部可以固定连接。可动部中的可动可以说是针对透光窗120可动。探测器主体300设置在可动部112上，这样，入侵探测器的视场角随着可动部112的转动而变化。防遮挡组件200包括发射器210和接收器220，发射器210配置为发射用于探测遮挡物的探测信号，接收器220配置为接收探测信号被遮挡物反射而形成的反射信号，发射器210设置在可动部112上。一种实施方式中，发射器210和接收器220可以均设置在可动部112上。另一种实施方式中，接收器220可以设置在壳体100上。
下面首先介绍发射器210和接收器220均设置在可动部112上的实施例，在本实施例中，发射器210和接收器220可以直接设置在可动部112上，也可以间接设置在可动部112上。其中，发射器210和接收器220直接设置在可动部112上是指发射器210和接收器220与可动部112之间是直接连接的，不设置其他部件。发射器210和接收器220间接设置在可动部112上是指发射器210和接收器220与可动部112之间不是直接连接的，可以设置其他部件。
根据本申请实施例中的入侵探测器，其壳体100的内部设置有支撑架110，可动部112与固定部111相对转动。也就是说，支撑架110的可动部112以角度可调的方式与固定部111连接，在可动部112相对于固定部111发生角度变化时，安装在可动部112上的探测 器主体300的探测视角Z01也会发生相应的变化，从而使探测器主体300可探测范围较大。另外，入侵探测器还包括防遮挡组件200，防遮挡组件200中的发射器210和接收器220均设置在可动部112上这使得发射器210和接收器220与探测器主体300的相对位置关系始终保持不变，由此，在探测器主体300的探测视角Z01发生变化的同时，防遮挡组件200的防遮挡视角也随之发生变化，从而，使防遮挡组件200的防遮挡视角与探测器主体300的探测视角Z01可以始终保持一致。可见，本申请实施例中的入侵探测器，具有较为广阔的防遮挡角度范围。并且，防遮挡角度随着探测器主体的探测视角的改变而变化，可以保证在防遮挡角度与当前探测视角一致，从而保证有效识别到当前探测范围是否存在遮挡物。
请参照图2和图4，图2示意出了入侵探测器被异物30遮挡的情况，此时防遮挡组件200中的发射器210发出探测信号，接收器220接收到被异物30反射后的反射信号后，就能够判断该入侵探测器被异物30遮挡，图4示意出了入侵探测器被刷漆、或喷涂的情况，当入侵探测器覆盖有油漆40或其它被喷涂的液体时，防遮挡组件200中的发射器210发出探测信号，接收器220接收到被油漆40或其它被喷涂的液体反射后的反射信号后，就能够判断该入侵探测器被遮挡。图3和图5为入侵探测器的探测视角Z01发生变化时，由于防遮挡组件200可以随着转动部112的转动而转动，也就是可以与探测器主体300一同转动，所以防遮挡组件200的检测视角也能够随探测视角Z01的变化而变化。在本实施例中，防遮挡组件200的检测视角和入侵探测器的探测视角Z01能够始终保持一致，进而扩大入侵探测器的防遮挡的检测视角。
需要说明的是，本申请实施例中的遮挡物，不仅包括异物，也包括油漆或者液体喷涂物等。也就是说，本申请对遮挡物的类型不进行限制。入侵探测器的探测视角Z01即为入侵探测器的探测范围，具体由探测器主体能够探测的视场大小确定。
在本申请的一些实施例中，壳体100上设置有透光窗120，入侵探测器还包括设置在透光窗120上的菲涅尔透镜130，菲涅尔透镜130为弧形透镜，可动部112包括转动台1121和设置在转动台1121上的电路板1122，探测器主体300、发射器210和接收器220均设置在电路板1122上。固定部111包括底座1112和与底座1112固定连接的支撑台1111，底座1112与壳体100固定连接，支撑台1111上设置有轴孔11111，可动部112还包括固定在转动台1121上的转动轴11212，转动轴11212穿设于轴孔11111。转动轴11212与弧形透镜的形心轴线平行或者共线，在图1中，M为水平方向，转动台1121沿水平方向转动，转动台1121可转动的角度范围为90°。其中，本文中所说的“转动台1121沿水平方向转动”是指转动台1121以转动轴11212为轴，顺时针或逆时针转动。
在本申请的一些实施例中，防遮挡组件200还包括导光柱230，导光柱230的一端与发射器210相抵接且能够随可动部112转动，导光柱230的另外一端靠近菲涅尔透镜130。
需要说明的是，作为一种实施例，所述转动台表面至少部分呈平面，所述电路板设置在所述转动台的至少部分平面处，所述探测器主体、所述发射器以及所述接收器设置在所述电路板上，所述电路板在所述可动部的带动下能够沿水平方向进行转动。并且，所述转动台在其转动范围内能够在任一位置停止或者所述转动台设置档位，所述转动台在所设置的固定角度处停止。
弧形透镜的任一横截面均可以确定出一个弧线，该弧线的可以确定出一个形心，那么，弧形透镜的多个横截面的形心所连成的直线即为形心轴线。
在本实施例中，可动部112上的转动轴11212和固定部111上的轴孔11111相配合，即形成了铰链结构，使得可动部112可以相对于固定部111转动。另外，转动轴11212与弧形透镜的形心轴线平行或者共线，即转动轴11212垂直于弧形透镜的横截面，由此，使 得可动部112的转动方向为弧形透镜的圆周方向。
可动部112的转动范围可以根据菲涅尔透镜130的有效光学区域所覆盖的角度范围进行设置。如果菲涅尔透镜130的有效光学区域所覆盖的角度范围较大，那么可动部112的转动范围可以设置得大一些。反之，如果菲涅尔透镜130的有效光学区域所覆盖的角度范围较小，那么可动部112的转动范围可以设置得小一些。由此，有利于保证探测器主体300的探测信号和发射器210的探测信号都能够通过菲涅尔透镜130出射，而避免被壳体100反射至入侵探测器内部而变成噪声，影响接收器220接收遮挡物的反射信号以及探测器主体300接收人体辐射红外信号。
在本实施例中，转动台1121可转动的角度范围可以为90°，具体地，当探测器主体300本身的探测视角为90°时，随着转动台1121的转动，入侵探测器的探测视角能够达到180°，以此能够覆盖更大的范围。
在本实施例中，探测器主体300、发射器210和接收器220均设置在电路板1122上，电路板1122设置在转动台1121上，这样，当转动台1121发生角度变化时，可以通过电路板1122带动探测器主体300、发射器210和接收器220同步发生转向，从而使探测视角Z01和防遮挡视角同步改变。另外，探测器主体300、发射器210和接收器220均设置在电路板1122上，还可以省略繁琐的布线，使结构较为简洁。
尽管发射器210能够发射探测信号，但是近红外线的信噪比非常低，接收器220能够接收到的有效信号非常弱，且很容易被其余噪声淹没。在本实施例中，通过设置导光柱230，能够将发射器210发射的探测信号引导至菲涅尔透镜130，再经过菲涅尔透镜130透射出去，从而将更多的探测信号发射到外部环境，以此提高探测信号的发射强度。
在其中一个具体的实施例中，入侵探测器还包括弹性件(图中未示出)，弹性件的一侧与支撑台1111相抵，弹性件的另外一侧与转动轴11212相抵。当外部作用力驱动转动台112沿水平方向转动时，弹性件不影响转动台112转动，当外部作用力消失时，弹性件的弹性力能够使转动轴11212固定于支撑台1111。在本实施例中，外部作用力能够驱动转动台112能够连续角度的转动，当外部作用力消失时，弹性件的两端分别与支撑台1111和转动轴11212抵接，此时，弹性件的弹性力能够使转动台1121相对于支撑台1111静止，也就是说，转动台1121相对于支撑台1111能够固定在任一角度，这样能够避免转动台1121与支撑台1111之间发生晃动。
如图6至图9所示，在另外一个具体的实施例中，转动台1121上设置有具有弹性的定位凸起11211，底座1112上还设置有与定位凸起11211相适配的多个定位凹槽11121，当可动部112停止转动时，定位凸起11211能够卡接并固定在其中一个定位凹槽11121中。在一些具体的实施例中，定位凹槽11121的数量为9个，当定位凸起11211位于中间的定位凹槽11121中时，入侵探测器的探测视角便为正前方，当定位凸起11211位于边缘的定位凹槽11121中时，入侵探测器能够探测到边缘的区域，也就是说，入侵探测器能够探测到其他方位的区域。当外部作用力驱动转动台1121转动时，定位凸起11211由于具备弹性，因此不影响转动台1121的转动，当外部作用力消失时，定位凸起11211能卡接在任一个定位凹槽11121中。
在一些具体的实施例中，在支撑台1111上设置有刻度尺11112，在转动台1121上设置有与刻度尺11112相适配的标尺11213，这样，当转动台1121转动时，便能够从刻度尺11112上实时读取转动的角度。
在一种实施方式中，如图8所示，刻度尺11112可以包括1-9共9个数字标识，其中 每个数字对应一个角度，例如，转动台1121可转动角度范围为90度，那么相邻数字对应的角度差可以为10度。与刻度尺11112相适配的标尺11213可以包括角度标识，该角度标识可以位于中央，对应入侵探测器的探测视角的正前方。那么转动台1121在转动后，刻度尺11112的哪个数字与角度标识对齐，则表示入侵探测器当前探测视角的方向与该数字对应角度相同。
在其他的实施例中，入侵探测器还可以包括驱动装置(图中未示出)，驱动装置与转动轴11212连接，以驱动转动轴11212相对于固定部111转动。当转动轴11212转动时，可带动转动台1121和转动台1121上的电路板1122同步转动。
在一些实施例中，驱动装置可以是旋转马达，旋转马达可以安装在固定部111上，相应的，旋转马达的输出端可以与转动轴11212连接，从而通过工作状态下的旋转马达可以驱动可动部112相对于固定部111转动。在其它的一些实施例中，驱动装置也可以是电机加上传动组件的组合结构，其中，传动组件例如可以为齿轮传动组件、同步带传动组件等。
在本申请的一些实施例中，发射器210为可发射近红外线的近红外发射器，接收器220为近红外接收器，此时，发射器210所发射的用于探测遮挡物的探测信号为近红外线，相应地，接收器220配置为接收发射器210所发射的近红外线被遮挡物反射而形成的反射近红外线。由于人体会辐射6-15μm波段的红外线，所以当人体进入侵探测器的探测范围内时，人体辐射的红外线会通过菲涅尔透镜130，菲涅尔透镜130将这部分红外能量聚焦到探测器主体300，从而使探测器主体300探测到人体的入侵。
其中，近红外线(near infra-red，NIR)的波长范围介于可见光和中远红外线之间，一般指750nm-3μm之间的电磁波。所以，人体辐射的红外线并不会被接收器220所接收而被认为是遮挡物，不会造成误报警。
在本申请的一些实施例中，防遮挡组件200还可以包括挡光套管240，挡光套管240的一端固定连接在电路板1122上，挡光套管240的另一端靠近菲涅尔透镜130，发射器210被罩设在挡光套管240内，导光柱230被固定在挡光套管240内，导光柱230的一端靠近发射器210，导光柱230的另一端靠近菲涅尔透镜130。
另外，遮挡所产生的探测信号的反射信号会非常弱，也就是说，遮挡物对发射器210发射的探测信号进行反射，所产生的反射信号一般强度是比较弱的，因此需要在电路上对其所产生的反射信号进行足够的放大，可以保证准确的读出反射信号的信号值。此时，如果发射器210发射的探测信号中有一部分未能从导光柱230传导出去，而作为杂散信号在入侵探测器内部直接被接收器220接收，在这样的放大倍率下，该部分杂散信号很容易引起接收器220的饱和，进而导致防遮挡组件200功能失效。其中，杂散信号在入侵探测器内部直接被接收器220接收是指杂散信号在入侵探测器内部经过各部件的反射作用，入射至接收器220而被接收器220所接收到。
故而，本实施例还可以在导光柱230的外部设置挡光套管240，发射器210和导光柱230均处于挡光套管240内，由此，能够有效的避免杂散信号在入侵探测器的内部传播，以此来提高防遮挡组件200的检测精准度。
如图11所示，图11为入侵探测器探测正前方时的防遮挡光路的一种示意图，可动部112上的发射器210发射的探测信号经过导光柱230从菲涅尔透镜130射出，在探测信号经过导光柱230的过程中，导光柱230的外部设置的挡光套管240可以防止探测信号从导光柱230的侧壁射入入侵探测器内部。探测信号从菲涅尔透镜130射出后，经过遮挡物的反射，反射信号从菲涅尔透镜130入射至入侵探测器内部，从而被接收器220接收。
如图12所示，图12为入侵探测器探测其他方位时的防遮挡光路的一种示意图，可动部112上的发射器210发射的探测信号经过导光柱230从菲涅尔透镜130射出，在探测信号经过导光柱230的过程中，导光柱230的外部设置的挡光套管240可以防止探测信号从导光柱230的侧壁射入入侵探测器内部。探测信号从菲涅尔透镜130射出后，经过遮挡物的反射，反射信号从菲涅尔透镜130入射至入侵探测器内部，从而被接收器220接收。
可见，无论入侵探测器的探测方位如何变化，接收器220、导光柱230以及挡光套管240都可以随着探测器主体一同转动，从而保证在对各个方位进行防遮挡检测时，均可以提高防遮挡组件200的检测精准度。
具体地，可以在电路板1122上设置空心的安装柱结构(图中未示出)，挡光套管240的一端套在安装柱结构上并与安装柱结构相结合，例如，可以以过盈配合的方式套接、通过胶粘的方式结合等，从而使挡光套管240实现与电路板1122的固定连接。此时，挡光套管240可以作为导光柱230的固定支架，便于固定导光柱230。为了避免杂散信号从挡光套管240与电路板1122之间的缝隙进入到入侵探测器的内部，可以在挡光套管240与电路板1122的连接处设置挡光垫片、泡棉等来遮挡缝隙。
当然，挡光套管240也可以为具有弹性的软质材料制成的套管，其可以套设于导光柱230上，为了避免杂散信号从挡光套管240与电路板1122之间的缝隙进入到入侵探测器的内部，挡光套管240与电路板1122的连接处可以为过盈配合，这样，软质的挡光套管240可以起到遮挡缝隙的作用。在这种情况下，导光柱230需要固定连接于电路板1122。
在一些具体的实施例中，如图7所示，在挡光套管240上设置有第一卡接部2401，导光柱230上设置有与第一卡接部2401相适配的槽体，通过将第一卡接部2401卡接在该槽体中，便能够将导光柱230固定在挡光套管240上。
在一些具体的实施例中，入侵探测器还可以设置保护层400，挡光套管240与保护层400固定连接。在保护层400上设置有第二卡接部410，转动台1121上设置有与第二卡接部410相适配的槽体，在电路板1122上设置有与第二卡接部410相适配的通孔，在安装时，将电路板1122放置在转动台1121上，接着将第二卡接部410穿过通孔并卡接在转动台1121中的槽体上，以此将电路板1122夹持在保护层400和转动台1121之间。
保护层400可以对电路板1122起到保护作用，可以防尘、防虫、防短路以及防水等。挡光套管240与保护层400也可以为同一个器件，那么挡光套管240和保护层400的材料可以是阻光或者吸光材料，以避免探测信号进行入侵探测器内部。如果挡光套管240为软质材料，由于保护层400一般采用硬质材料等能够起到较好的保护作用，例如，采用硬质塑料件等，所以这种情况下，如果二者为两个器件，挡光套管240可以与保护层400过瘾配合，例如，二者可以粘接在一起等。如果二者为一个器件，可以采用注塑成型的方式，只要保证挡光套管240部分为软质材料，保护层400部分为硬质材料即可，在此不做具体限定。
在本申请的一些实施例中，防遮挡组件200还可以包括挡光套管240，发射器210被罩设在挡光套管240内，导光柱230被固定在挡光套管240内，导光柱230的一端靠近发射器210，导光柱230的另一端靠近菲涅尔透镜130。挡光套管240包括彼此相连的第一部段和第二部段，第一部段与电路板1122固定连接，挡光套管240的连接菲涅尔透镜130的部分为第二部段。进一步地，第一部段为硬质挡光材料，第二部段的材质为软质挡光材料。挡光套管240覆盖整个导光柱230，第一部段与电路板1122的连接部位处于弧形透镜的形心轴线上，且第一部段的与电路板的连接部位位于可动部的转动中心，第二部段的远离第一部段的一端与菲涅尔透镜130过盈配合。
在本实施例中，第一部段的与电路板1122的连接部位处于弧形透镜的形心轴线上，这样，在可动部112转动的过程中，挡光套管240与菲涅尔透镜130之间的距离不变。在此基础上，第二部段采用柔性挡光材料，并且第二部段的远离第一部段的一端与菲涅尔透镜130过盈配合，这样，可以避免在可动部112转动的过程中菲涅尔透镜130与挡光套管240之间产生间隙，由此，可以进一步避免杂散信号进入到入侵探测器的内部，以进一步提高防遮挡组件200的检测精准度。
挡光套管240的第一部段和第二部段，两者的界限可以根据实际需求进行设置，其中的一个原则是，使挡光套管240的与菲涅尔透镜130相接触的部位为软质材料即可。另外，第一部段和第二部段，可以分别制作成型，再将两者结合在一起。或者，也可以先通过硬质胶料注塑出第一部段，再在第一部段的基础上通过软质胶料二次注塑成型而制作出第二部段。
另外，挡光套管240的颜色优选为黑色，由于黑色能够更好的吸收光，因此当挡光套管240较薄时，黑色的挡光套管240能够更加有效的遮挡杂散信号，避免杂散信号在入侵探测器的内部传播。当挡光套管240的壁厚较厚时，其颜色也可以为褐色、红色等，在挡光套管240的壁厚达到一定厚度，该厚度的挡光套管240可以阻挡杂散信号从其中射出，此时，挡光套管240可以为其他更浅的颜色，这都是合理的，也可以获得较好的挡光效果。
在本申请的一些实施例中，为了尽量避免探测信号在入侵探测器内部传播后被接收器接收，可以通过在壳体上设置不同的结构来遮挡导光柱发出的探测信号，以避免探测信号从导光柱与壳体之间的缝隙进入入侵探测器内部。
在一种实施方式中，为了使导光柱发出的探测信号能够射出入侵探测器，一般会在壳体上与导光柱对应的位置设置凹槽，因此，导光柱可以伸进该凹槽内，凹槽的侧壁可以起到阻挡探测信号从导光柱与壳体之间的缝隙进入入侵探测器内部的效果。
在另一种实施方式中，考虑到壳体安装方式的限制，有一些安装方式的入侵探测器可能无法采用导光柱伸进该凹槽内的结构，这种情况下，可以在凹槽的一侧设置挡条。该挡条可以设置于凹槽的靠近探测器主体的一侧，以避免探测信号进入探测器主体。
在另一种实施方式中，如果采用导光柱伸进凹槽内的结构不会影响入侵探测器的安装，可以即采用导光柱伸进凹槽内的结构，又在凹槽的一侧设置挡条，以进一步避免探测信号从导光柱与壳体之间的缝隙进入入侵探测器内部。
在本申请的一些实施例中，如图13至图14所示，壳体100上形成有挡条140，挡条140呈弧形且延菲涅尔透镜130的圆周方向延伸，挡条140将透光窗120分隔为第一透光区域121和第二透光区域122，发射器210与第一透光区域121对应，接收器220与第二透光区域122对应，挡条140和壳体100共同限定出限位槽150。挡光套管240的与电路板1122的连接部位处于弧形透镜的形心轴线上，且挡光套管240的与电路板1122的连接部位位于可动部112的转动中心，导光柱230的端部限制在限位槽150内，导光柱230的端部与菲涅尔透镜130之间具有间隙。
在本实施例中，挡光套管240的与电路板1122的连接部位处于弧形透镜的形心轴线上，这样，在可动部112转动的过程中，挡光套管240的靠近菲涅尔透镜130的一端与菲涅尔透镜130之间的距离不变。在此基础上，导光柱230的端部限制在挡条140和壳体100所限定出的限位槽150内，并且导光柱230的端部始终正对第一透光区121，而接收器220可以与第二透光区122正对，只要保证接收器220可以接收到足够强度的反射信号即可。这样，限位槽150的侧壁(挡条140的一部分结构和壳体100一部分结构)可以在导光柱 230的端部形成一定的遮挡，从而在一定程度上减少被引导至导光柱230的端部的探测信号直接被接收器220接收。此外，导光柱230的端部与菲涅尔透镜130之间具有间隙，可以避免导光柱230在运动时与菲涅尔透镜130接触而导致菲涅尔透镜130磨损。
在本申请的一些实施例中，如图14所示，入侵探测器还包括阻挡片160，阻挡片160呈弧形且设置在挡条140上，阻挡片160的内边缘到弧形透镜的形心轴线的距离小于挡光套管240的长度。尽管在限位槽150的侧壁的遮挡作用下，可以在一定程度上减少探测信号直接被接收器220接收。但依然有部分探测信号会回到入侵探测器内部，尤其是通过挡光套管240与壳体100或挡条140之间的间隙处漏出部分探测信号。而阻挡片160的设置扩张了限位槽150对探测信号的遮挡范围，可以进一步避免探测信号在入侵探测器内部传播后被接收器220接收。
另外，阻挡片160的内边缘到弧形透镜的形心轴线的距离，小于挡光套管240的长度，这样，可以保证阻挡片160的遮挡范围涵盖挡光套管240的端部，从而有效防止探测信号从挡光套管240与壳体100或挡条140之间的间隙处漏出而被接收器220接收。
在本申请的一些实施例中，入侵探测器还包括设置在电路板1122上的LED指示灯(图中未示出)，LED指示灯被罩设在导光柱230内。
在本实施例中，导光柱230能够同时将发射器210发射的探测信号和LED指示灯发射的灯光引导至菲涅尔透镜130后出射至入侵探测器外，由此，可以提高导光柱230的利用率，而不必再为LED指示灯另外设置导光结构，这样能够优化入侵探测器产品的内部空间，有利于产品的小型化设计，而且还有利于降低入侵探测器的生产成本。
如图15所示，在本申请的一些实施例中，入侵探测器还包括密封件600，密封件600至少部分位于壳体100与菲涅尔透镜130之间，壳体100与菲涅尔透镜130固定设置，壳体100包括至少一个弧形面板101和容纳腔102，支撑架110、探测器主体300和防遮挡组件200均设置在容纳腔102内，弧形面板101至少位于壳体100的一侧，菲涅尔透镜130呈弧形，菲涅尔透镜130覆盖至少部分容纳腔102，弧形面板101的外表面与菲涅尔透镜130的外表面平齐设置。
壳体100和菲涅尔透镜130固定连接，两者可以直接固定在一起，也可以在两者之间设置连接件而间接固定在一起，在本实施例中，在壳体100和菲涅尔透镜130之间设置密封件600仅为一种实施方式。其中，密封件600可以为橡胶、树脂等材料制成的密封件，在此不做具体限定。
根据本申请实施例中的入侵探测器，其壳体100具有弧形面板101，且菲涅尔透镜130也呈弧形，当菲涅尔透镜130覆盖到壳体100的容纳腔102上时，壳体100的弧形面板101与菲涅尔透镜130的外表面平齐，这样，可以提高入侵探测器的外观的美观性，以得到整体弧面的美观大方的外形。
再者，在壳体100和菲涅尔透镜130之间设置有密封件600，这样能够将入侵探测器的内部空间与外部空间完全隔离，由此便能够使安装完成后的壳体100和菲涅尔透镜130具备防水功能，图10为安装完成后的入侵探测器的结构示意图，可以看出，当这种入侵探测器应用于空气湿度较大的地区时，由于其具备良好的防水功能，因此能够增加入侵探测器的使用寿命。
需说明的是，弧形面板101的外表面与菲涅尔透镜130的外表面平齐设置，可以允许存在一定的安装误差。也就是说，在存在一定安装误差的情况下，也依然可以认为是本实施例中的平齐设置。其中，安装误差不超过为弧形面板101半径的10％。
本申请另外一方面的实施例提出了一种入侵探测器的安装方法。该安装方法包括：
提供入侵探测器的壳体，壳体上设置有窗口区域，壳体包括相对设置的两个弧形面板和紧邻弧形面板设置的弧形安装面103，窗口区域位于两个弧形面板之间，弧形面板的半径大于弧形安装面103的半径；
提供菲涅尔透镜，菲涅尔透镜的厚度等于弧形面板的半径与弧形安装面103的半径的差值；
将菲涅尔透镜弯曲成与弧形安装面103相适配的弧形；
将菲涅尔透镜安装在壳体上，使菲涅尔透镜覆盖窗口区域且菲涅尔透镜与两个弧形安装面103紧密贴合。
图10为安装完成后的入侵探测器的结构示意图，可以看出，通过本申请实施例中的入侵探测器的安装方法，可以使得完成安装后的入侵探测器，其菲涅尔透镜130的表面和弧形面板101的表面即可处于平齐的状态，由此，可以提高入侵探测器的外观的美观性，以得到整体弧面的美观大方的外形。
本申请实施例还提供了另一种入侵探测器，该入侵探测器包括：
壳体；
支撑架，所述支撑架设置在所述壳体内，所述支撑架包括固定部和可动部，所述固定部与所述可动部连接，所述可动部与所述固定部相对转动；
探测器主体，所述探测器主体设置在所述可动部上；以及
防遮挡组件，所述防遮挡组件包括发射器和接收器，所述发射器配置为发射用于探测遮挡物的探测信号，所述接收器配置为接收所述探测信号被遮挡物反射而形成的反射信号，所述发射器设置在所述可动部上，所述接收器设置在壳体上。
作为一种实施方式，上述可动部包括转动台和设置在转动台的电路板，探测器主体和发射器设置在电路板上，转动台表面至少部分呈平面，电路板设置在转动台的至少部分平面处，接收器与电路板电连接，电路板在可动部的带动下沿水平方向进行转动。这样，探测器主体和发射器可以随可动部的带动进行转动，接收器则固定不动，接收器与电路板电连接，以使接收器能够正常工作。此时，接收器与电路板之间的电连接线可以穿过可动部以及固定部将二者电连接。
为了使转动台不会影响接收器接收反射信号，转动台的大小可以在能够安装探测器主体、发射器和电路板的前提下尽量小，或者，可以设置为能够透射反射信号的材质，这都是合理的。
本申请实施例提供的入侵探测器的其他部件的具体设置方式与上述第一种入侵探测器均可以相同，请参见上述第一种入侵探测器的各实施例的说明，在此不再赘述。
需要说明的是，在本文中，诸如第一和第二等之类的关系术语仅仅用来将一个实体或者操作与另一个实体或操作区分开来，而不一定要求或者暗示这些实体或操作之间存在任何这种实际的关系或者顺序。而且，术语“包括”、“包含”或者其任何其他变体意在涵盖非排他性的包含，从而使得包括一系列要素的过程、方法、物品或者设备不仅包括那些要素，而且还包括没有明确列出的其他要素，或者是还包括为这种过程、方法、物品或者设备所固有的要素。在没有更多限制的情况下，由语句“包括一个……”限定的要素，并不排除在 包括所述要素的过程、方法、物品或者设备中还存在另外的相同要素。
本申请的各个实施例均采用相关的方式描述，各个实施例之间相同相似的部分互相参见即可，每个实施例重点说明的都是与其他实施例的不同之处。
以上所述仅为本申请的较佳实施例，并非用于限定本申请的保护范围。凡在本申请的精神和原则之内所作的任何修改、等同替换、改进等，均包含在本申请的保护范围内。

Claims (17)

  1. 一种入侵探测器，其特征在于，包括：
    壳体；
    支撑架，所述支撑架设置在所述壳体内，所述支撑架包括固定部和可动部，所述固定部与所述可动部连接，所述可动部与所述固定部相对转动；
    探测器主体，所述探测器主体设置在所述可动部上；以及
    防遮挡组件，所述防遮挡组件包括发射器和接收器，所述发射器配置为发射用于探测遮挡物的探测信号，所述接收器配置为接收所述探测信号被遮挡物反射而形成的反射信号，所述发射器设置在所述可动部上。
  2. 根据权利要求1所述的入侵探测器，其特征在于，所述接收器设置在所述可动部上，或，所述接收器设置在所述壳体上。
  3. 根据权利要求2所述的入侵探测器，其特征在于，所述可动部包括转动台和设置在所述转动台的电路板，所述转动台表面至少部分呈平面，所述电路板设置在所述转动台的至少部分平面处，所述电路板在所述可动部的带动下进行转动；
    所述接收器设置在所述可动部上，所述探测器主体、所述发射器和所述接收器均设置在所述电路板上；或，
    所述接收器设置在除所述可动部外的其他部件上，所述探测器主体和所述发射器设置在所述电路板上。
  4. 根据权利要求1-3任一项所述的入侵探测器，其特征在于，所述可动部包括转动台和设置在所述转动台上的电路板，所述固定部包括底座和与所述底座固定连接的支撑台，所述底座与所述壳体固定连接，所述支撑台上设置有轴孔，所述可动部还包括固定在所述转动台上的转动轴，所述转动轴穿设于所述轴孔。
  5. 根据权利要求4所述的入侵探测器，其特征在于，所述壳体上设置有透光窗，所述入侵探测器还包括设置在所述透光窗上的菲涅尔透镜，所述菲涅尔透镜为弧形透镜；所述转动轴与所述弧形透镜的形心轴线平行或者共线，所述转动台以所述转动轴为轴，顺时针或逆时针转动，所述转动台可转动的角度范围为90°。
  6. 根据权利要求5所述的入侵探测器，其特征在于，所述防遮挡组件还包括导光柱，所述导光柱的一端与所述发射器相抵接且能够随所述可动部转动，所述导光柱的另外一端靠近所述菲涅尔透镜。
  7. 根据权利要求4所述的入侵探测器，其特征在于，所述入侵探测器还包括弹性件，所述弹性件的一侧与所述支撑台相抵，所述弹性件的另外一侧与所述转动轴相抵。
  8. 根据权利要求4所述的入侵探测器，其特征在于，所述转动台上设置有具有弹性的定位凸起，所述底座上还设置有与所述定位凸起相适配的多个定位凹槽，所述可动部处于停止转动工况，所述定位凸起卡接并固定在其中一个所述定位凹槽中。
  9. 根据权利要求6所述的入侵探测器，其特征在于，所述防遮挡组件还包括挡光套管，所述挡光套管的一端固定连接所述电路板上，所述挡光套管的另一端靠近所述菲涅尔透镜，所述发射器被罩设在所述挡光套管内，所述导光柱被固定在所述挡光套管内，所述导光柱的一端靠近所述发射器，所述导光柱的另一端靠近所述菲涅尔透镜。
  10. 根据权利要求6所述的入侵探测器，其特征在于，所述防遮挡组件还包括挡光套管，所述挡光套管包括彼此相连的第一部段和第二部段，所述第一部段与所述电路板固定连接，所述第一部段为硬质挡光材料，所述第二部段的材质为软质挡光材料，所述挡光套 管覆盖整个所述导光柱，所述第一部段的与所述电路板的连接部位处于所述弧形透镜的形心轴线上，且所述第一部段的与所述电路板的连接部位位于所述可动部的转动中心，所述第二部段的远离所述第一部段的一端与所述菲涅尔透镜过盈配合。
  11. 根据权利要求9所述的入侵探测器，其特征在于，所述壳体上形成有挡条，所述挡条呈弧形且延所述菲涅尔透镜的圆周方向延伸，所述档条将所述透光窗分隔为第一透光区域和第二透光区域，所述发射器与所述第一透光区域对应，所述接收器与所述第二透光区域对应。
  12. 根据权利要求11所述的入侵探测器，其特征在于，所述挡条和所述壳体共同限定出限位槽，所述挡光套管的与所述电路板的连接部位处于所述弧形透镜的形心轴线上，且所述挡光套管的与所述电路板的连接部位位于所述可动部的转动中心，所述导光柱的端部伸出所述挡光套管且限制在所述限位槽内，所述导光柱的端部与所述菲涅尔透镜之间具有间隙。
  13. 根据权利要求11所述的入侵探测器，其特征在于，所述入侵探测器还包括阻挡片，所述阻挡片呈弧形且设置在所述挡条上，所述阻挡片的内边缘到所述弧形透镜的形心轴线的距离小于所述挡光套管的长度。
  14. 根据权利要求6所述的入侵探测器，其特征在于，所述入侵探测器还包括设置在所述电路板上的LED指示灯，所述LED指示灯被罩设在所述导光柱内。
  15. 根据权利要求1-3任一项所述的入侵探测器，其特征在于，所述固定部相对于所述壳体固定，所述可动部相对于所述壳体转动，所述转动台在其转动范围内能够在任一位置停止；
    或者，所述固定部相对于所述壳体固定，所述可动部相对于所述壳体转动，所述转动台设置档位，所述转动台在所设置的档位对应的固定角度处停止。
  16. 根据权利要求1-3任一项所述的入侵探测器，其特征在于，所述入侵探测器还包括菲涅尔透镜和密封件，所述密封件至少部分位于所述壳体与所述菲涅尔透镜之间，所述壳体与所述菲涅尔透镜固定设置。
  17. 根据权利要求1-3任一项所述的入侵探测器，其特征在于，所述壳体包括至少一个弧形面板和容纳腔，所述支撑架、所述探测器主体和所述防遮挡组件均设置在所述容纳腔内，所述弧形面板至少位于所述壳体的一侧，所述菲涅尔透镜呈弧形，所述菲涅尔透镜覆盖至少部分所述容纳腔，所述弧形面板的外表面与所述菲涅尔透镜的外表面平齐设置。
PCT/CN2022/132012 2021-12-30 2022-11-15 入侵探测器 WO2023124598A1 (zh)

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