Anti-shielding dual-technology sensor

Abstract

The utility model is suitable for the technical field of security and protection equipment, and provides an anti-shielding dual-technology sensor, which comprises a shell with a cavity structure formed inside; the lens is used for receiving the infrared light, converging the received infrared light and projecting the converged infrared light onto the infrared tube; and the main control assembly comprises an infrared tube, a microwave module, an anti-disassembly switch and a main control board, and the infrared tube and the microwave module are installed on the main control board and face the lens. According to the utility model, an electric signal generated by the infrared tube and a microwave signal received by the microwave module simultaneously detect that an object moves, and then the main control board outputs an alarm signal, so that the condition that the sensor is only blocked by an external object and misinformation occurs is prevented; once the shell is dismounted and opened by an illegal person, the anti-dismounting switch transmits a signal to the main control board, so that the sensor is prevented from underreporting, and the problems that the detection effect is influenced and even dangerous conditions occur due to the fact that the sensor has false reporting or underreporting are solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of security equipment, and in particular relates to an anti-shielding dual-detection sensor. Background Art

[0002] The monitoring components of the security protection system need to be combined with the alarm, communication and control systems to form a comprehensive and efficient security solution. The application areas of security protection systems are very wide, and they are often used in residential security, commercial buildings, industrial facilities, public facilities, educational institutions, medical institutions, banks and financial institutions, government facilities, transportation systems, smart cities, cultural heritage, sports and entertainment venues, etc. With the development of technology, security systems are increasingly dependent on automation, intelligence and networking technologies to improve the accuracy and response speed of monitoring.

[0003] The security protection system is a comprehensive security solution, mainly composed of the following key parts: video surveillance system, intrusion alarm system, access control system, monitoring intercom system, physical protection facilities, intelligent analysis system, etc. The intrusion alarm system is composed of various sensors and alarm hosts, which are used to detect illegal intrusions, etc. When it detects illegal intrusion or malicious removal of the alarm, it can promptly alarm and play a security role.

[0004] In the prior art, in the security protection system, sensors with alarm functions need to be installed on the outer walls of residential or commercial buildings. Most sensors with security protection functions are installed outdoors. Sensors with alarm functions often have high sensitivity so as to detect the occurrence of abnormal conditions in time and transmit signals to the system. However, during use, due to the influence of spatial obstacles, swaying or obstruction of external objects, and damage to the sensors by illegal personnel, false alarms or missed alarms may occur, affecting the detection effect and even causing dangerous conditions. Utility Model Content

[0005] The purpose of the embodiment of the utility model is to provide an anti-obstruction dual-detection sensor, which aims to solve the problem that during use, the sensor may be affected by spatial obstacles, swaying or obstruction of external objects, and damage to the sensor by illegal personnel, resulting in false alarms or missed alarms, affecting the detection effect and even causing dangerous conditions.

[0006] The utility model is implemented in this way: an anti-shielding dual-detection sensor, the anti-shielding dual-detection sensor comprising:

[0007] A housing, wherein a cavity structure is formed inside the housing, and the housing is used for mounting a lens and a main control component;

[0008] A lens is mounted on a housing. The lens is used to receive infrared light and converge the received infrared light and project it onto an infrared tube of a main control component.

[0009] A main control component includes an infrared tube, a microwave module, an anti-tamper switch, and a main control board. The infrared tube and the microwave module are mounted on the main control board and face the lens. The infrared tube is used to receive the infrared light converged by the lens to generate an electrical signal and transmit the generated electrical signal to the main control board. The microwave module is used to transmit and receive microwave signals and transmit the received microwave signals to the main control board. The anti-tamper switch is mounted on the main control board. The anti-tamper switch is used to prevent the housing from being opened. The main control board is used to transmit the electrical signal generated by the infrared tube and the microwave signal generated by the microwave module to a main control unit.

[0010] Preferably, the housing includes a front shell and a bottom shell. The front shell is a semi-closed housing. The outer side surface of the front shell is arc-shaped. A first mounting hole is provided on the outer side surface of the front shell. The first mounting hole is used to mount the lens. A plurality of first positioning grooves are provided on the hole wall surface of the first mounting hole. The first positioning grooves are used to position the lens. A plurality of first mounting grooves and mounting bumps are provided on the inner wall surface of the front shell. The first mounting grooves are used to mount the main control board and the infrared tube, the microwave module, and the anti-tamper switch mounted on the main control board. The mounting bumps are used to connect with the bottom shell.

[0011] Preferably, the bottom shell is a semi-closed housing. A plurality of second mounting grooves, first positioning bumps, and fixing knobs are provided on the inner wall surface of the bottom shell. The second mounting grooves cooperate with the mounting bumps on the front shell so that the front shell and the bottom shell are connected. The first positioning bumps are used to position the main control board. The fixing knobs are used to fix the main control board on the bottom shell.

[0012] Preferably, the lens is mounted on the front shell through a mounting bracket. The lens is an arc-shaped Fresnel lens. The concave side of the lens is mounted on the mounting bracket. The convex side of the lens is mounted on the first mounting hole of the front shell. A plurality of second positioning bumps are provided on the mounting bracket. The second positioning bumps cooperate with the first positioning grooves on the front shell to facilitate positioning the lens on the front shell.

[0013] Preferably, the infrared tube is mounted at the center position of the main control board and is located in the same straight line direction as the center position of the concave side of the lens so that the external light received by the lens is converged and projected onto the infrared tube. The infrared tube is electrically connected to the main control board so that the infrared tube transmits the generated electrical signal to a main receiver through the main control board.

[0014] Preferably, the microwave module is mounted above the infrared tube. The microwave module is mounted above the infrared tube and faces the inner side of the lens. The microwave module is electrically connected to the main control board so that the generated microwave signal is transmitted to a main receiver.

[0015] Preferably, the anti-disassembly switch is provided with a connecting portion and a mounting portion, the connecting portion is respectively connected to the inner wall surfaces of the front shell and the bottom shell, and the mounting portion is mounted on the main control board and electrically connected to the main control board.

[0016] Preferably, the main control board is provided with a signal light unit, a terminal socket connector and a converter unit. The signal light unit, the terminal socket connector, the converter unit, the infrared tube and the microwave module are respectively electrically connected to the main control board through connecting wires. The signal light unit is connected to the relay output unit to facilitate the transmission of blocking or alarm signals. The terminal socket connector is used to connect the connecting wires.

[0017] Preferably, the main control component is further provided with a dip switch, which is installed on the main control board. The dip switch is used to adjust the signal strength of the infrared tube or microwave module so as to adjust the sensitivity of the anti-blocking dual-detection sensor.

[0018] The utility model provides an anti-obstruction dual-detection sensor. The utility model is provided with a shell for installing a lens and a main control component. Infrared light is received through the lens and the received infrared light is converged and projected onto the infrared tube so that the infrared tube generates an electrical signal. When the electrical signal generated by the infrared tube and the microwave signal received by the microwave module simultaneously detect the movement of an object and transmit the signal to the main control board, the main control board outputs an alarm signal to prevent the sensor from falsely reporting due to being obstructed by external objects. An anti-dismantling switch is provided. Once the shell is dismantled and opened by illegal personnel, the anti-dismantling switch transmits a signal to the main control board so that the main control board outputs an alarm signal to prevent the sensor from missing reports. The problem of false reports or missed reports of the sensor caused by the influence of spatial obstacles, swaying or obstruction of external objects, and damage to the sensor by illegal personnel is solved, which affects the detection effect and even causes dangerous conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A three-dimensional structural diagram of an anti-shielding dual-detection sensor provided in an embodiment of the utility model;

[0020] Figure 2 A schematic diagram of the internal structure of a main control board in an anti-obstruction dual-detection sensor provided in an embodiment of the utility model.

[0021] In the attached figure: 1. top shell; 2. bottom shell; 21. fixed knob; 3. lens; 4. infrared tube; 5. microwave module; 6. anti-tampering switch; 7. main control board; 8. terminal block connector. DETAILED DESCRIPTION

[0022] In order to make the objectives, technical solutions and advantages of the present utility model more clear and understandable, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0023] The following describes in detail the specific implementation of the present utility model with reference to specific embodiments.

[0024] As Figure 1-2 shown, it is a structural diagram of an anti-blocking dual-sensor provided by an embodiment of the present utility model, including: a housing, a cavity structure is formed inside the housing, and the housing is used for installing a lens 3 and a main control component;

[0025] Lens 3, the lens 3 is installed on the housing, and the lens 3 is used to receive infrared light and project the received infrared light onto the infrared tube 4 of the main control component after convergence;

[0026] The main control component includes an infrared tube 4, a microwave module 5, an anti-tamper switch 6 and a main control board 7. The infrared tube 4 and the microwave module 5 are installed on the main control board 7 and face the lens 3. The infrared tube 4 is used to receive the infrared light converged by the lens 3 to generate an electrical signal and transmit the generated electrical signal to the main control board 7. The microwave module 5 is used to transmit and receive microwave signals and transmit the received microwave signals to the main control board 7. The anti-tamper switch 6 is installed on the main control board 7, and the anti-tamper switch 6 is used to prevent the housing from being opened. The main control board 7 is used to transmit the electrical signal generated by the infrared tube 4 and the microwave signal generated by the microwave module 5 to the main control unit.

[0027] In the embodiment of the present utility model, preferably, the anti-blocking dual-detection sensor can be applied to a security protection system, and can also be installed in an outdoor environment and on the outer wall of a residence or a commercial building, and has an alarm function. The outer shell with a certain cavity structure is used for the installation of the lens 3 and the main control component. On the outer side of the lens 3 shell, the lens 3 receives external infrared light and converges it and then projects it onto the infrared tube 4. The infrared light received by the lens 3 can be the energy signal during the movement of a person. When the infrared tube 4 receives the infrared light projected by the lens 3 to generate an electrical signal, and combines with the microwave signal detected by the microwave module 5 being blocked and transmits it to the main control board 7, and the main control board 7 issues an alarm. The infrared tube 4 and the microwave module 5 will only issue an alarm signal when they simultaneously detect a movement signal through the lens 3. When the microwave module 5 detects a microwave signal, but the infrared tube 4 does not detect a signal, it is because of an external blocker or swaying on the sensor. At this time, the main control board 7 will issue a signal of the blocker to give a prompt to remove the blocker to prevent it from affecting the normal use of the sensor and reduce the false alarm situation caused by the sensor being blocked by a stationary external blocker. The anti-tamper switch 6 set on the main control board 7 can prevent the detection of the infrared tube 4 from being bypassed by illegal means and prevent the sensor from being removed using tools. Once the shell of the sensor is opened, the anti-tamper switch 6 transmits a signal to the main control board 7, and the main control board 7 issues an alarm signal in time to prevent the sensor from having a missed alarm, affecting the detection effect and preventing dangerous situations.

[0028] In an example of the present utility model, the present utility model provides a housing for installing the lens 3 and the main control component. The lens 3 receives infrared light and converges the received infrared light and then projects it onto the infrared tube 4 to facilitate the infrared tube 4 to generate an electrical signal. When the electrical signal generated by the infrared tube 4 and the microwave signal received by the microwave module 5 simultaneously detect the movement of an object and transmit the signal to the main control board 7, and then the main control board 7 outputs an alarm signal to prevent the sensor from having a false alarm due to being blocked by an external object. The anti-tamper switch 6 is provided. When the shell is illegally removed and opened by a person, the anti-tamper switch 6 transmits a signal to the main control board 7 to facilitate the main control board 7 to output an alarm signal to prevent the sensor from having a missed alarm, solving the problems of false alarms or missed alarms of the sensor caused by the influence of spatial obstacles, swaying or blocking of external objects, and damage to the sensor by illegal personnel, affecting the detection effect and even dangerous situations.

[0029] Such as Figure 1-2As shown, as a preferred embodiment of the present utility model, the outer shell includes a front shell 1 and a bottom shell 2. The front shell 1 is a semi-closed shell. The outer side surface of the front shell 1 is arc-shaped. A first mounting hole is provided on the outer side surface of the front shell 1 for mounting a lens 3. A plurality of first positioning grooves are provided on the hole wall surface of the first mounting hole for positioning the lens 3. A plurality of first mounting grooves and mounting bumps are provided on the inner wall surface of the front shell 1. The first mounting grooves are used for mounting a main control board 7 and an infrared tube 4, a microwave module 5, and an anti-tamper switch 6 mounted on the main control board 7. The mounting bumps are used for connecting with the bottom shell 2.

[0030] In the embodiment of the present utility model, preferably, the outer shell can be formed by connecting two semi-closed shells to form a closed shell with a certain cavity structure. The outer shell is composed of a front shell 1 and a bottom shell 2. The outer side surface of the front shell 1 can be arc-shaped and protrude outward. The first mounting hole can be rectangular and a first positioning groove is provided on its hole wall surface to facilitate the mounting of the lens 3. The first mounting hole can be provided at the center position of the front shell 1 to facilitate the lens 3 to converge infrared light and project it onto the infrared tube 4. A plurality of first mounting grooves are provided on the inner wall surface of the front shell 1 for positioning the main control board 7 and the infrared tube 4, the microwave module 5, and the anti-tamper switch 6 mounted on the main control board 7 and facing the lens 3. A plurality of mounting bumps are provided on the side surface of the inner wall surface of the front shell 1 to facilitate the connection with the bottom shell 2 in place.

[0031] As Figure 1-2 As shown, as a preferred embodiment of the present utility model, the bottom shell 2 is a semi-closed shell. A plurality of second mounting grooves, first positioning bumps, and fixing knobs 21 are provided on the inner wall surface of the bottom shell 2. The second mounting grooves cooperate with the mounting bumps on the front shell 1 so that the front shell 1 and the bottom shell 2 are connected. The first positioning bumps are used for positioning the main control board 7. The fixing knobs 21 are used for fixing the main control board 7 on the bottom shell 2.

[0032] In the embodiment of the present utility model, preferably, a plurality of second mounting grooves are provided on the inner wall surface of the bottom shell 2 to cooperate with the mounting bumps of the front shell 1 so that the front shell 1 and the bottom shell 2 are connected. The mounting bumps can be embedded in the second mounting grooves so that the connection between the front shell 1 and the bottom shell 2 is complete and together they protect the main control components installed in the internal cavity. The fixing knobs 21 are provided on the bottom shell 2 to pass through the main control board 7 and twisting the top of the fixing knobs 21 can fix the main control board 7 completely to prevent the main control board 7 from shifting and affecting the detection effect.

[0033] As Figure 1-2As shown, as a preferred embodiment of the present utility model, the lens 3 is mounted on the front shell 1 through a mounting bracket. The lens 3 is an arc-shaped Fresnel lens 3. The concave side of the lens 3 is mounted on the mounting bracket, and the convex side of the lens 3 is mounted on the first mounting hole of the front shell 1. A plurality of second positioning bumps are provided on the mounting bracket, and the second positioning bumps cooperate with the first positioning groove on the front shell 1 to facilitate positioning the lens 3 on the front shell 1.

[0034] In the embodiment of the present utility model, preferably, the lens 3 is mounted on the first mounting hole of the front shell 1 through a mounting bracket for protection. The lens 3 can be a Fresnel lens 3. By changing the segmentation method of the Fresnel lens 3, it is convenient to detect and converge infrared light and project it onto the infrared tube 4, thereby reducing the probability of false alarms and missed alarms. The mounting bracket can be an enclosed transparent protective cover for protecting the lens 3. It can also be embedded into the first positioning groove of the front shell 1 through the second positioning bumps to make the connection between the mounting bracket and the front shell 1 complete.

[0035] As Figure 1-2 As shown, as a preferred embodiment of the present utility model, the infrared tube 4 is mounted at the central position of the main control board 7 and is located in the same straight line direction as the central position of the concave side of the lens 3 to facilitate the converged external light received by the lens 3 to be projected onto the infrared tube 4. The infrared tube 4 is electrically connected to the main control board 7 to facilitate the infrared tube 4 to transmit the generated electrical signal to the main receiver through the main control board 7.

[0036] In the embodiment of the present utility model, preferably, the infrared tube 4 mainly detects whether there is a signal of heat source energy movement within the detection range of the sensor, and transmits the signal to the main control board 7. The microprocessor analyzes and compares the collected signal data to determine whether the moving object within the detection range of the sensor is a person or an object, which can more accurately identify effective signals and reduce the false alarm rate.

[0037] As Figure 1-2 As shown, as a preferred embodiment of the present utility model, the microwave module 5 is mounted above the infrared tube 4. The microwave module 5 is mounted above the infrared tube 4 and faces the inner side of the lens 3. The microwave module 5 is electrically connected to the main control board 7 to facilitate transmitting the generated microwave signal to the main receiver.

[0038] In an embodiment of the present utility model, preferably, the microwave module 5 can detect whether there is an object blocking or appearing within the detection range of the sensor by emitting a microwave signal through the transmitting end, and determine whether an object stays or moves in front of the sensor based on the microwave signal received by the receiving end. At the same time, combined with the signal on the infrared tube 4, it can be determined whether an inanimate object without vital signs and without heat sensation is swinging or blocking the sensor or a person is moving within the detection range of the sensor, so as to identify valid signals and more effectively reduce the false alarm rate and missed alarm rate of the sensor.

[0039] As Figure 1-2 shown, as a preferred embodiment of the present utility model, the anti-tamper switch 6 is provided with a connecting portion and an installation portion. The connecting portion is respectively connected to the inner wall surfaces of the front shell 1 and the bottom shell 2, and the installation portion is installed on the main control board 7 and electrically connected to the main control board 7.

[0040] In an embodiment of the present utility model, preferably, the anti-tamper switch 6 is electrically connected to the main control board 7 through the installation portion, and the connecting portion is connected to the inside of the housing, so as to form a complete connection. A normally closed connection contact can be set. When the front shell 1 is separated from the bottom shell 2, the contact is disconnected and an alarm signal is immediately generated by the main control board 7, which can effectively prevent an intruder from maliciously damaging the sensor and prevent the sensor from missing an alarm.

[0041] As Figure 1-2 shown, as a preferred embodiment of the present utility model, the main control board 7 is provided with a signal lamp unit, a wiring socket connector 8 and a converter unit. The signal lamp unit, the wiring socket connector 8, the converter unit, the infrared tube 4 and the microwave module 5 are respectively electrically connected to the main control board 7 through connecting wires. The signal lamp unit is connected to the relay output unit to facilitate the transmission of blocking or alarm signals, and the wiring socket connector 8 is used to connect the connecting wires.

[0042] In an embodiment of the present utility model, preferably, the signal lamp unit on the main control board 7 can be provided with an LED signal lamp connected to the relay output unit, and different brightness and different lighting frequencies are set according to the alarm signal or prompt signal. When the sensor only detects that there is an object blocking by the microwave signal and the infrared tube 4 does not detect a signal, the relay output unit for anti-blocking is disconnected. At this time, the main control board 7 transmits the prompt signal to the signal lamp unit and controls the signal lamp to flash and light up to play a reminder role. When the blocking object is removed, the signal lamp no longer flashes, and the relay output unit and the signal lamp unit return to the normal working state. The infrared tube 4, the microwave module 5, the signal lamp unit, the wiring socket connector 8 and the converter unit are respectively electrically connected to the main control board 7, and can also be connected to each other by connecting wires and the wiring socket connector 8 is used to receive and install the connecting wires for easy installation.

[0043] As Figure 1-2As shown in the figure, as a preferred embodiment of the present utility model, the main control component is further provided with a DIP switch, which is installed on the main control board 7 and is used to adjust the signal intensity of the infrared tube 4 or the microwave module 5 so as to adjust the sensitivity of the anti-blocking dual detector sensor.

[0044] In the embodiment of the present utility model, preferably, a DIP switch for adjusting the detection sensitivity is provided on the main control component. The DIP switch can adjust the intensity of the detection signal of the microwave module 5 or the infrared tube 4 according to the requirements of the use scenario of the sensor, so as to adjust its sensitivity, so that the sensor can be adjusted according to different scenarios for use and detection in multiple scenarios.

[0045] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present utility model shall be included in the protection scope of the present utility model.

Claims

1. An anti-blocking dual-detection sensor, characterized in that: The anti-shielding dual-detection sensor comprises: A housing, wherein a cavity structure is formed inside the housing, and the housing is used for mounting a lens and a main control component; A lens is mounted on the housing and is used to receive infrared light and converge the received infrared light and project it onto the infrared tube of the main control component; The main control component includes an infrared tube, a microwave module, an anti-dismantling switch and a main control board. The infrared tube and the microwave module are installed on the main control board and face the lens. The infrared tube is used to receive the infrared light converged by the lens to generate an electrical signal and transmit the generated electrical signal to the main control board. The microwave module is used to transmit and receive microwave signals and transmit the received microwave signals to the main control board. The anti-dismantling switch is installed on the main control board. The anti-dismantling switch is used to prevent the shell from being opened. The main control board is used to transmit the electrical signal generated by the infrared tube and the microwave signal generated by the microwave module to the main control unit.

2. The anti-shielding dual-detection sensor according to claim 1, characterized in that: The outer shell includes a front shell and a bottom shell, the front shell is a semi-closed shell, the outer side surface of the front shell is arc-shaped, a first mounting hole is arranged on the outer side surface of the front shell, the first mounting hole is used to install a lens, a plurality of first positioning grooves are arranged on the hole wall surface of the first mounting hole, the first positioning grooves are used to position the lens, a plurality of first mounting grooves and mounting protrusions are arranged on the inner wall surface of the front shell, the first mounting grooves are used to install a main control board and an infrared tube, a microwave module and an anti-disassembly switch installed on the main control board, and the mounting protrusions are used to connect with the bottom shell.

3. The anti-shielding dual-detection sensor according to claim 2, characterized in that: The bottom shell is a semi-closed shell, and the inner wall surface of the bottom shell is provided with a plurality of second mounting grooves, a first positioning protrusion and a fixing knob. The second mounting groove cooperates with the mounting protrusion on the face shell to connect the face shell and the bottom shell. The first positioning protrusion is used to position the main control board, and the fixing knob is used to fix the main control board on the bottom shell.

4. The anti-shielding dual-detection sensor according to claim 2, characterized in that: The lens is mounted on the face shell via a mounting bracket. The lens is an arc-shaped Fresnel lens. The concave side of the lens is mounted on the mounting bracket, and the convex side of the lens is mounted on the first mounting hole of the face shell. A plurality of second positioning protrusions are arranged on the mounting bracket, and the second positioning protrusions cooperate with the first positioning grooves on the face shell to facilitate positioning of the lens on the face shell.

5. The anti-shielding dual-detection sensor according to claim 1, characterized in that: The infrared tube is installed at the center of the main control board and is located in the same straight line as the center of the concave side of the lens so that the external light received by the lens can be gathered and projected onto the infrared tube. The infrared tube is electrically connected to the main control board so that the infrared tube can transmit the generated electrical signal to the main receiver through the main control board.

6. The anti-shielding dual-detection sensor according to claim 1, characterized in that: The microwave module is installed above the infrared tube and faces the inner side of the lens. The microwave module is electrically connected to the main control board so as to transmit the generated microwave signal to the main receiver.

7. The anti-shielding dual-detection sensor according to claim 2, characterized in that: The anti-disassembly switch is provided with a connecting portion and a mounting portion, wherein the connecting portion is respectively connected to the inner wall surfaces of the front shell and the bottom shell, and the mounting portion is mounted on the main control board and is electrically connected to the main control board.

8. The anti-shielding dual-detection sensor according to claim 1, characterized in that: The main control board is provided with a signal light unit, a terminal block connector and a converter unit. The signal light unit, the terminal block connector, the converter unit, the infrared tube and the microwave module are respectively electrically connected to the main control board through connecting wires. The signal light unit is connected to the relay output unit to facilitate the transmission of blocking or alarm signals. The terminal block connector is used to connect the connecting wires.

9. The anti-shielding dual-detection sensor according to claim 1, characterized in that: The main control component is also provided with a dip switch, which is installed on the main control board. The dip switch is used to adjust the signal strength of the infrared tube or microwave module so as to adjust the sensitivity of the anti-blocking dual-detection sensor.

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