CN114136452B - Thermally stable detection driver and infrared detector using same - Google Patents
Thermally stable detection driver and infrared detector using same Download PDFInfo
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- CN114136452B CN114136452B CN202111168505.5A CN202111168505A CN114136452B CN 114136452 B CN114136452 B CN 114136452B CN 202111168505 A CN202111168505 A CN 202111168505A CN 114136452 B CN114136452 B CN 114136452B
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
- G01J5/02—Constructional details
- G01J5/06—Arrangements for eliminating effects of disturbing radiation; Arrangements for compensating changes in sensitivity
- G01J5/061—Arrangements for eliminating effects of disturbing radiation; Arrangements for compensating changes in sensitivity by controlling the temperature of the apparatus or parts thereof, e.g. using cooling means or thermostats
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
- G01J5/10—Radiation pyrometry, e.g. infrared or optical thermometry using electric radiation detectors
- G01J5/12—Radiation pyrometry, e.g. infrared or optical thermometry using electric radiation detectors using thermoelectric elements, e.g. thermocouples
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
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- General Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Photometry And Measurement Of Optical Pulse Characteristics (AREA)
Abstract
The application relates to a thermally stable detection driver and an infrared detector applying the same, and relates to the technical field of detection equipment. The application has the effects of reducing the temperature of the PCB in time and improving the thermal stability of the infrared detector.
Description
Technical Field
The application relates to the technical field of detection equipment, in particular to a thermally stable detection driver and an infrared detector using the same.
Background
The pyroelectric element in the infrared detector detects the presence or movement of a human body, and converts an output signal of the pyroelectric element into a voltage signal. The voltage signal is subjected to waveform analysis, and a detection signal is emitted only when a waveform generated by a human body is detected by the waveform analysis. The infrared detector is provided with a detection driver for driving the infrared detector to operate.
The detection driver comprises at least one PCB board, components are mounted on the PCB board, and an infrared detection chip is mounted on one of the PCB boards. A Fresnel lens is arranged on the shell of the infrared detector. The infrared detection chip monitors the activity condition of surrounding human bodies in real time and is matched with the Fresnel lens, so that infrared rays generated by the human bodies when the human bodies move are conveniently transmitted to the infrared detection chip through the Fresnel lens, and then the detection driver receives detection signals to identify the movement of the human bodies and trigger an alarm.
With respect to the related art described above, the inventors consider that when the temperature of the detection driver is too high, normal operation of the infrared detection chip may be affected, and thus detection accuracy of the infrared detector may be affected.
Disclosure of Invention
In order to timely reduce the temperature of a detection driver and improve the thermal stability of an infrared detector, the application provides the thermally stable detection driver and the infrared detector using the same.
In a first aspect, the present application provides a thermally stable detection driver, which adopts the following technical scheme:
the utility model provides a thermally stable detection driver, includes at least one PCB board, installs infrared detection chip on one of them PCB board, is provided with the one side that deviates from infrared detection chip on the PCB board of infrared detection chip has set gradually heat conduction membrane and refrigeration piece, and the driver still includes the treater, still including being used for detecting the temperature sensor who is provided with the PCB board temperature height of infrared detection chip, temperature sensor is connected with the treater, is located PCB board one side and is provided with the air exhauster, the air exhauster is connected with the treater.
Through adopting above-mentioned technical scheme, the heat dissipation membrane evenly spreads the local heat on the PCB board, do benefit to temperature sensor and respond to the temperature of PCB board steadily, and the refrigerating plate accelerates the heat dissipation speed on the heat conduction membrane, improves the cooling speed of PCB board, and temperature sensor detects the temperature of PCB board, and when the temperature is higher than the default temperature, the processor control air exhauster rotates for the refrigerating plate heat dissipation, the temperature of reduction PCB board is accelerated, improves infrared detector's heat stability.
Optionally, the PCB is covered with a copper layer, and the PCB is windowed.
Through adopting above-mentioned technical scheme, the heat radiating area of copper layer increase PCB board, the heat dispersion of PVB board is optimized in the processing of windowing, improves infrared detector's heat stability.
In a second aspect, the present application further provides an infrared detector, including the driver of the first aspect, and further including a housing and an outer cover fixed to the housing, wherein a heat dissipation frame is disposed in the housing, a mounting groove is disposed in the heat dissipation frame, the PCB board is mounted in the mounting groove, a vent hole is disposed on the heat dissipation frame, and the exhaust fan is mounted on the housing on a side of the cooling fin facing away from the heat conducting film.
Through adopting above-mentioned technical scheme, the heat dissipation speed of PCB board is accelerated to heat dissipation membrane and refrigeration piece, improves the cooling speed of PCB board, and temperature sensor detects the temperature of PCB board, and when the temperature was higher than the default temperature, the processor controlled air exhauster rotated, and the heat dissipation of refrigeration piece is accelerated in the exhaust of air exhauster for reduce the temperature of PCB board, improve infrared detector's heat stability.
Optionally, the front of PCB board deviates from the mounting groove tank bottom, the side that the heat dissipation frame kept away from the PCB board sets up a plurality of fin.
Through adopting above-mentioned technical scheme, the heat dissipation frame is when being used for fixed PCB board, and heat transfer is on the heat dissipation frame, and the heat dissipation frame absorbs the heat that more PCB boards were dispelled to the fin accelerates the speed of heat dissipation, improves the temperature stability of PCB board.
Optionally, be provided with the pyroelectric infrared detection chip that is connected with the treater on the PCB board, the treater still is connected with audible and visual alarm, and the voltage signal that the treater received pyroelectric infrared detection chip sent and control audible and visual alarm and send the alarm.
By adopting the technical scheme, after the pyroelectric infrared detection chip detects a target, an alarm electric signal is sent to the processor, and the audible and visual alarm gives an alarm, so that the device has a warning effect.
Optionally, the processor is further connected with a wireless communication module for transmitting information to the mobile terminal or the control platform.
By adopting the technical scheme, the processor can send information such as monitoring results and the like and running state information of the infrared detector to the mobile terminal or the control platform, so that the mobile terminal or the control platform can inquire conveniently.
Optionally, be provided with the camera on the enclosing cover, the camera is connected with the processor, starts the camera and makes the camera take the picture when the processor received the alarm signal, and the processor still is connected with the photo memory that is used for storing the camera and takes.
By adopting the technical scheme, a user can conveniently inquire the history record through follow-up, the current site situation can be checked through the photo shot by the camera, whether the photo analysis is misjudgment or not can be judged according to the photo analysis, and debugging is carried out again according to the misjudgment reason.
Optionally, the casing is connected with a bracket, the bracket comprises a connecting rod, one end of the connecting rod comprises a clamping component fixed with the casing, and the other end of the connecting rod is provided with a fixing component for fixing with a wall;
the clamping assembly comprises a bottom supporting plate fixed on the connecting rod, the connecting rod penetrates through the side wall of the shell, the bottom supporting plate abuts against the outer wall of the shell, and the connecting rod is further connected with a abutting plate abutting against the inner wall of the shell in a threaded manner;
the fixed subassembly is including fixing the base on the wall, be provided with the recess on the base, the one end that clamping subassembly was kept away from to the connecting rod is fixed with the connecting ball, and fixed subassembly is still including fixed cover shell, fixed cover shell includes the section of thick bamboo wall with base threaded connection, still includes the end wall fixed with the section of thick bamboo wall, and end wall central authorities have the slide opening that the diameter is less than the connecting ball diameter, and the connecting rod runs through the slide opening, and the end wall supports tightly to connect the ball and makes the connecting ball spacing in the recess.
By adopting the technical scheme, when the infrared detector is installed, after the angle of the shell is adjusted, the shell is clamped by the abutting plate and the bottom supporting plate, and the shell is fixed with the connecting rod; then after the base is fixed on the wall, the infrared detector is fixed on the wall after the position between the connecting ball and the base is adjusted and the fixing sleeve locks the connecting ball.
Optionally, the position that is close to the connecting rod on the casing inner wall is provided with the button, the button is connected with the treater, support and offered the breach on the tight board, the button is located the breach, the lateral wall of breach department extends along the direction of keeping away from, to the direction slope of keeping away from the button.
Through adopting above-mentioned technical scheme, when infrared detector is promoted by external force and is rotated around the connecting rod, the button is with the position relative change of supporting tight board, and the button supports tightly to supporting tight board surface along the domatic of breach department, and the button is pressed promptly, and the processor obtains the voltage signal that the button was pressed the time change to send the alarm to mobile terminal or monitoring center platform, suggestion infrared detector has the transaction, improves the security.
Optionally, recess central authorities are provided with the inside groove, and the inside groove tank bottom is fixed with the miniature pressure sensor who is connected with the treater, be fixed with the spring on the miniature pressure sensor, the one end that miniature pressure sensor was kept away from to the spring is fixed with the joint ball, a plurality of arc draw-in groove has been seted up on the connection ball outer wall, the joint ball with draw-in groove joint.
Through adopting above-mentioned technical scheme, when the connecting rod is stirred, the position of connecting ball in the recess changes, and the joint ball is at first followed the draw-in groove and is slipped to another draw-in groove, and at this in-process, the spring extrudees miniature pressure sensor when being compressed, miniature pressure sensor produces the telecommunication flow signal of change and sends to the treater, and the treater sends out the alarm promptly, and the position of suggestion infrared detector is moved to the system, improves the security.
In summary, the present application includes at least one of the following beneficial technical effects:
1. the heat dissipation film uniformly spreads local heat on the PCB, is favorable for the temperature sensor to stably sense the temperature of the PCB, the refrigerating sheet accelerates the heat dissipation speed on the heat conduction film, the cooling speed of the PCB is improved, the temperature sensor detects the temperature of the PCB, when the temperature is higher than the preset temperature, the processor controls the exhaust fan to rotate, the refrigerating sheet is accelerated to dissipate heat, the temperature of the PCB is accelerated to be reduced, and the thermal stability of the infrared detector is improved;
2. the heat dissipation frame is used for fixing the PCB, the heat of the heat dissipation film is transferred to the heat dissipation frame, the heat dissipation frame absorbs more heat dissipated by the PCB, the heat dissipation speed of the heat dissipation is increased by the heat dissipation fins, and the temperature stability of the PCB is improved;
3. when the infrared detector is pushed by external force to rotate around the connecting rod, the key is pressed down, the processor gives an alarm to the mobile terminal or the monitoring center platform to prompt that the infrared detector is abnormal, so that the safety is improved;
4. when the connecting rod is stirred, the spring extrudes the miniature pressure sensor, and the miniature pressure sensor generates telecommunication flow signals and sends the telecommunication flow signals to the processor, and the processor gives an alarm to prompt the system that the position of the infrared detector is moved, so that the safety is improved.
Drawings
Fig. 1 is a block diagram of the structure of the present application.
Fig. 2 is a schematic structural diagram of a PCB board in the present application.
Fig. 3 is a schematic view of the overall structure of the present application.
Fig. 4 is a cross-sectional view of the present application.
Fig. 5 is an enlarged schematic view of the portion a in fig. 4.
Fig. 6 is an exploded view of the connection of the actuator to the heatsink frame embodying the present application.
Fig. 7 is a schematic structural view of the stent of the present application.
Reference numerals illustrate: 1. a PCB board; 2. a first processor; 3. a memory; 4. a wireless communication module; 5. an infrared detection chip; 6. a temperature sensor; 7. a second processor; 8. a heat conductive film; 9. a cooling sheet; 10. an exhaust fan; 11. a housing; 111. a receiving chamber; 12. a heat dissipation frame; 121. a mounting groove; 122. a vent hole; 123. a heat sink; 13. an outer cover; 131. opening holes; 132. a Fresnel lens; 14. an audible and visual alarm; 15. a battery case; 16. a battery; 17. a camera; 18. a flexible board; 19. a bracket; 191. a connecting rod; 192. a clamping assembly; 1921. a bottom support plate; 1922. a pressing plate; 1923. a notch; 193. a fixing assembly; 1931. a connecting ball; 19311. a clamping groove; 1932. a base; 1933. a mounting plate; 1934. a groove; 1935. fixing the casing; 1936. a slide hole; 1937. an inner tank; 1938. a miniature pressure sensor; 1939. a spring; 1930. a clamping ball; 20. and (5) a key.
Detailed Description
The application is described in further detail below with reference to fig. 1-7.
The embodiment of the application discloses a thermally stable detection driver, which comprises a plurality of PCB boards 1, wherein the PCB boards 1 can be divided into a bottom board, a core board, a sensor driving board and a sensor interface board according to functional modules, the driver also comprises a processor, and the processor can be divided into a plurality of blocks according to the functional modules. The device comprises a core board, a first processor 2 and a memory 3, wherein the core board is provided with the first processor 2, and the memory 3 is connected with the first processor 2 and is used for collecting sensor signals and processing various data; the base plate is connected with the core plate, a voltage stabilizing circuit and a wireless communication module 4 are arranged on the base plate, and the wireless communication module 4 is connected with the first processor 2 and is used for transmitting data and images; the sensor drive board, the core board and the sensor interface board are connected, the infrared detection chip 5 is arranged on the sensor interface board, the type of the infrared detection chip 5 can be UL04322, and the sensor drive board is used for driving the infrared detection chip 5 on the sensor interface board.
The sensor interface board is also provided with a second processor 7 and a temperature sensor 6, the temperature sensor 6 and the infrared detection chip 5 are connected with the second processor 7, and the model of the temperature sensor 6 can be AD590KF. The temperature sensor 6 is used for detecting the temperature of the sensor interface board, and transmitting an electrical signal converted from the detected temperature signal to the second processor 7. The second processor 7 is connected to the first processor 2.
In order to improve the heat dissipation of the driver, the copper laying area on the sensor interface board is increased, the copper coating thickness is increased, and the heat dissipation effect is improved. And a heat dissipation structure is further arranged on the sensor interface board. The heat radiation structure is including setting gradually heat conduction membrane 8 and the refrigeration piece 9 on the sensor interface board keeps away from infrared detection chip 5 one side, after the copper coating heat dissipation, the local heat of heat conduction membrane 8 evenly dispersed PCB board, heat conduction membrane 8 makes the heat on the sensor interface board scatter fast, be convenient for temperature sensor 6 stable induction temperature to on evenly transmitting the refrigeration piece 9 with the heat, refrigeration piece 9 absorbs the heat, accelerate the thermal derivation on drive plate and the sensor interface board, make pyroelectric infrared detection chip 5 work in more stable environment.
In order to further improve the heat dissipation of the driver, a windowing process is performed at the bottom of the sensor interface board, and the heat dissipation effect is further improved due to the contact of the sensor interface board with the heat conducting film 8.
The drive further comprises an exhaust fan 10, which exhaust fan 10 is connected to the second processor 7 and blows air towards the drive. When the temperature electric signal value received by the second processor 7 is larger than the preset temperature electric signal value, the second processor 7 controls the exhaust fan 10 to start. After the exhaust fan 10 is started, heat is evacuated, and the temperature of the driver is reduced.
The memory 3 is used for recording the frequency of starting the exhaust fan 10, and when the number of times of starting the exhaust fan 10 exceeds the preset number of times in a period of time, the second processor 7 sends a signal to the first processor 2, so that the first processor 2 sends an overhaul signal to the mobile terminal or the control platform.
The implementation principle of the embodiment of the application is as follows: when the sensor interface board generates heat, the copper layer and the windowed window quicken heat dissipation, the heat conducting film 8 uniformly disperses local heat, the temperature sensor 6 is convenient for stably sensing temperature, and meanwhile, the heat is uniformly transferred onto the refrigerating sheet 9, and the refrigerating sheet 9 quickens heat export. When the temperature electric signal value received by the second processor 7 is larger than the preset temperature electric signal value, the second processor 7 controls the exhaust fan 10 to start. After the exhaust fan 10 is started, heat on the refrigerating sheet 9 is evacuated, and the temperature of the driver is reduced.
The embodiment of the application also discloses an infrared detector. Referring to fig. 3 and 4, the infrared detector includes a housing 11, a receiving chamber 111 is provided in the housing 11, a heat sink 12 is fixed in the receiving chamber 111, a driver is installed in the heat sink 12, an outer cover 13 is further installed on the housing 11, and the driver and the like are sealed in the housing 11.
Referring to fig. 3 and 4, an opening 131 is formed in the outer cover 13 at a side opposite to the pyroelectric infrared detection chip 5, a fresnel lens 132 is arranged on the opening 131, and the pyroelectric infrared detection chip 5 corresponds to the fresnel lens 132. The first processor 2 is also connected with an audible and visual alarm 14, infrared rays generated by a human body when the human body moves are transmitted to the pyroelectric infrared detection chip 5 through the Fresnel lens 132, voltage signals sent by the pyroelectric infrared detection chip 5 are amplified by the amplifying circuit and transmitted to the first processor 2 for processing, the human body movement is identified, the first processor 2 controls the audible and visual alarm 14 to send out audible and visual alarms, and people are prompted to check the situation.
Referring to fig. 1, in order to implement remote warning, a first processor 2 is connected to a wireless communication module 4 on a base plate, and the first processor 2 communicates with a communication module on a mobile terminal or a control platform through the wireless communication module 4. When the pyroelectric infrared detection chip 5 senses a target, the first processor 2 sends target alarm information to the mobile terminal or the control platform through the wireless communication module 4.
Referring to fig. 4 and 5, the heat sink 12 is provided with an inwardly recessed mounting groove 121, and a plurality of vent holes 122 are formed in the bottom of the mounting groove 121, the vent holes 122 penetrating through the side wall of the heat sink 12. The driver is installed in the installation groove 121, and components on the driver are all located at one side far away from the bottom of the installation groove 121.
Referring to fig. 4 and 6, a plurality of heat radiating fins 123 are fixed to a side wall of the heat radiating frame 12 at a side far from the opening of the mounting groove 121, the heat radiating fins 123 accelerate heat on the heat radiating frame 12, and the vent 122 is provided between the two heat radiating fins 123. A battery case 15 adjacent to the heat sink 123 is also fixed to the heat sink 12, and a battery 16 for supplying power to the driver is mounted in the battery case 15.
Referring to fig. 4, the exhaust fan 10 is installed in the accommodating chamber 111, the exhaust fan 10 is positioned between the heat dissipation frame 12 and the bottom of the accommodating chamber 111, and after the exhaust fan 10 is started, the interior of the casing 11 is ventilated to reduce the temperature of the driver.
Referring to fig. 4, in order to improve the safety of the detection of the infrared detector, a camera 17 is fixed to the outer cover 13, and the camera 17 is connected to the driver through a flexible board 18, and the flexible board 18 facilitates subsequent maintenance and installation. The camera 17 is connected with the first processor 2, and when the first processor 2 receives the signal sent by the pyroelectric infrared detection chip 5, the first processor 2 controls the camera 17 to take a plurality of pictures and store the pictures in the memory 3, so that the follow-up inquiry of the site situation is facilitated. After taking the picture, the first processor 2 controls the camera 17 to be closed, so that the electric quantity is saved.
Referring to fig. 4 and 7, a bracket 19 is installed at an end of the cabinet 11 remote from the outer cover 13, and an end of the bracket 19 remote from the cabinet 11 is installed on a wall. The bracket 19 includes a connecting rod 191, one end of the connecting rod 191 is fixed with a clamping assembly 192, the clamping assembly 192 is clamped on the housing 11, the other end is connected with a fixing assembly 193, and the fixing assembly 193 is used for mounting the housing 11 on a wall.
The connecting rod 191 penetrates the housing 11 and protrudes into the receiving chamber 111, and the clamping assembly 192 includes a bottom plate 1921 fixed to one end of the connecting rod 191, the bottom plate 1921 being located in the receiving chamber 111. The clamping assembly 192 further includes a tightening plate 1922 threadedly coupled to the connecting rod 191, the tightening plate 1922 being tightened against the bottom plate 1921 until the tightening plate 1922 tightens against the housing 11, and the clamping assembly 192 is clamped to the housing 11.
Referring to fig. 1 and 7, in order to monitor the state of the infrared detector and enhance the anti-theft function, a key 20 is installed on the inner wall of the cabinet 11 near the connection rod 191, and the key 20 is connected to the first processor 2.
Referring to fig. 4 and 7, a notch 1923 is formed in the bottom plate 1921, the key 20 is located at the notch 1923, the side wall at the notch 1923 extends in a direction away from the key 20 and is inclined in a direction away from the key 20, when the casing 11 is pushed by an external force to rotate around the connecting rod 191, the positions of the key 20 and the bottom plate 1921 are changed relatively, and the key 20 abuts against the surface of the bottom plate 1921 along the slope at the notch 1923, namely, the key 20 is pressed. Referring to fig. 1, the first processor 2 obtains a voltage signal that changes when the key 20 is pressed, and gives an alarm to the mobile terminal or the monitoring platform to prompt that the infrared detector is abnormal.
Referring to fig. 4 and 5, the fixing assembly 193 includes a connection ball 1931 fixed on the connection rod 191, and further includes a base 1932, wherein the base 1932 is cylindrical, a mounting plate 1933 is integrally formed on an end surface of the base 1932, and screws are screwed on the mounting plate 1933, and the base 1932 is fixed on a wall. The side of the base 1932 remote from the mounting plate 1933 is provided with an inwardly recessed groove 1934.
The connecting rod 191 is further sleeved with a fixed sleeve 1935, the fixed sleeve 1935 comprises a cylindrical wall and an end wall fixed at one end of the cylindrical wall, a sliding hole 1936 is formed in the center of the end wall, the diameter of the sliding hole 1936 is smaller than that of the connecting ball 1931 and larger than that of the connecting rod 191, and the connecting rod 191 is located in the sliding hole 1936. The coupling ball 1931 may be inserted into the recess 1934, the stationary sleeve 1935 threaded onto the base 1932 and tightened, with the end wall abutting the coupling ball 1931, causing the coupling ball 1931 to abut in the recess 1934. The connecting ball 1931 can rotate in the groove 1934, so that the position of the connecting rod 191, i.e., the position of the housing 11, can be adjusted during installation, and the orientation of the infrared detector can be changed.
Referring to fig. 1 and 5, a plurality of inward concave arc-shaped clamping grooves 19311 are further formed in the spherical surface of the connecting ball 1931, an inward concave inner groove 1937 is formed in the base 1932, a micro pressure sensor 1938 is fixed on the bottom of the inner groove 1937, the micro pressure sensor 1938 can be a FAB, and the micro pressure sensor 1938 is connected with the first processor 2. A spring 1939 is fixed on the micro pressure sensor 1938, a clamping ball 1930 is fixed at one end of the spring 1939 away from the bottom of the inner groove 1937, the spring 1939 pushes the clamping ball 1930 to extend out of the inner groove 1937, when the clamping ball 1930 is pushed into the inner groove 1937, the spring 1939 presses the micro pressure sensor 1938, the micro pressure sensor 1938 outputs a voltage signal, and when the positions of the spring 1939 and the clamping ball 1930 are unchanged, the voltage signal value output by the micro pressure sensor 1938 is unchanged.
Referring to fig. 4 and 5, when the connection ball 1931 is abutted in the groove 1934, the connection ball 1931 is inserted into the card slot 19311, limiting the connection ball 1931. When the connecting rod 191 is shifted, the position of the connecting ball 1931 in the groove 1934 changes, the snap ball 1930 slides out of the slot 19311 first, possibly slides into the other slot 19311, during which the spring 1939 is compressed first and then expands, the spring 1939 presses the micro pressure sensor 1938 when compressed, the micro pressure sensor 1938 changes the voltage signal sent to the first processor 2, and the first processor 2 sends an alarm to indicate to the system that the position of the infrared detector is moved.
The implementation principle of the infrared detector of the embodiment of the application is as follows: when the pyroelectric infrared detection chip 5 detects a target, a signal is sent to the first processor 2, the first processor 2 controls the audible and visual alarm 14 to send out an alarm, and a target alarm signal is sent to the mobile terminal or the monitoring platform.
When the infrared detector is in operation, the copper plating layer helps the heat of the PCB 1 to be dissipated, the heat dissipation film evenly disperses the local heat of the PCB 1, the temperature sensor 6 monitors the temperature of the PCB 1, and when the temperature electric signal received by the first processor 2 is greater than a preset temperature value, the first processor 2 controls the exhaust fan 10 to rotate for exhaust.
The housing 11 is mounted on a wall, and the position of the housing 11 is adjusted. When the casing 11 is pushed by external force to rotate around the connecting rod 191, the positions of the key 20 and the abutting plate 1922 are changed relatively, the key 20 abuts against the surface of the abutting plate 1922 along the slope at the notch 1923, namely, the key 20 is pressed down, and the first processor 2 gives an alarm to the mobile terminal or the monitoring platform.
When the connecting rod 191 is shifted, the position of the connecting ball 1931 in the groove 1934 changes, the clamping ball 1930 is clamped into the other clamping groove 19311, during the displacement process of the clamping ball 1930, the spring 1939 is compressed first and then stretched, the spring 1939 presses the micro pressure sensor 1938 when being compressed, the voltage signal sent by the micro pressure sensor 1938 changes and is sent to the first processor 2, and the first processor 2 sends an alarm signal to the mobile terminal or the monitoring platform to prompt the system that the position of the infrared detector is moved.
The above embodiments are not intended to limit the scope of the present application, so: all equivalent changes in structure, shape and principle of the application should be covered in the scope of protection of the application.
Claims (8)
1. An infrared detector, characterized in that: the heat radiation type detection driver comprises a heat stable detection driver, and further comprises a machine shell (11) and an outer cover (13) fixed on the machine shell (11), wherein a heat radiation frame (12) is arranged in the machine shell (11), a mounting groove (121) is formed in the heat radiation frame (12), a PCB (1) is arranged in the mounting groove (121), a vent hole (122) is formed in the heat radiation frame (12), and an exhaust fan (10) is arranged on the machine shell (11) at one side, away from a heat conducting film (8), of a refrigerating sheet (9);
the machine shell (11) is connected with a bracket (19), the bracket (19) comprises a connecting rod (191), one end of the connecting rod (191) comprises a clamping component (192) fixed with the machine shell (11), and the other end of the connecting rod is provided with a fixing component (193) fixed with a wall;
the clamping assembly (192) comprises a bottom support plate (1921) fixed on the connecting rod (191), the connecting rod (191) penetrates through the side wall of the shell (11), the bottom support plate (1921) abuts against the outer wall of the shell (11), and the connecting rod (191) is further connected with a abutting plate (1922) in a threaded mode, which abuts against the inner wall of the shell (11);
the fixing assembly (193) comprises a base (1932) fixed on a wall, a groove (1934) is formed in the base (1932), a connecting ball (1931) is fixed at one end, far away from the clamping assembly (192), of the connecting rod (191), the fixing assembly (193) further comprises a fixing sleeve (1935), the fixing sleeve (1935) comprises a cylinder wall in threaded connection with the base (1932), the fixing sleeve further comprises an end wall fixed with the cylinder wall, a sliding hole (1936) with the diameter smaller than that of the connecting ball (1931) is formed in the center of the end wall, the connecting rod (191) penetrates through the sliding hole (1936), and the end wall abuts against the connecting ball (1931) to limit the connecting ball (1931) in the groove (1934);
an inner groove (1937) is formed in the center of the groove (1934), a miniature pressure sensor (1938) connected with a processor is fixed at the bottom of the inner groove (1937), a spring (1939) is fixed on the miniature pressure sensor (1938), a clamping ball (1930) is fixed at one end, far away from the miniature pressure sensor (1938), of the spring (1939), a plurality of arc-shaped clamping grooves (19311) are formed in the outer wall of the connecting ball (1931), and the clamping ball (1930) is clamped with the clamping grooves (19311).
2. An infrared detector as claimed in claim 1, wherein: the detection driver comprises at least one PCB (1), wherein an infrared detection chip (5) is arranged on the PCB (1), one surface, deviating from the infrared detection chip (5), of the PCB (1) of the infrared detection chip (5 is sequentially provided with a heat conducting film (8) and a refrigerating sheet (9), the driver further comprises a processor, the driver further comprises a temperature sensor (6) used for detecting the temperature of the PCB (1) of the infrared detection chip (5), the temperature sensor (6) is connected with the processor, an exhaust fan (10) is arranged on one side of the PCB (1), and the exhaust fan (10) is connected with the processor.
3. An infrared detector as claimed in claim 2, wherein: the PCB (1) is covered with a copper layer, and the PCB (1) is subjected to windowing treatment.
4. An infrared detector as claimed in claim 1, wherein: the front face of the PCB (1) is away from the bottom of the mounting groove (121), and a plurality of cooling fins (123) are arranged on one side, away from the PCB (1), of the cooling rack (12).
5. An infrared detector as claimed in claim 1, wherein: the processor is also connected with an audible and visual alarm (14), and the processor receives the voltage signal sent by the pyroelectric infrared detection chip (5) and controls the audible and visual alarm (14) to send out an alarm.
6. An infrared detector as claimed in claim 1, wherein: the processor is also connected with a wireless communication module (4) for transmitting information to the mobile terminal or the control platform.
7. An infrared detector as claimed in claim 1, wherein: the camera (17) is arranged on the outer cover (13), the camera (17) is connected with the processor, when the processor receives an alarm electric signal, the camera (17) is started, the camera (17) shoots a picture, and the processor is further connected with the memory (3) for storing the picture shot by the camera (17).
8. An infrared detector as claimed in claim 1, wherein: the novel intelligent control device is characterized in that a key (20) is arranged on the inner wall of the shell (11) at a position close to the connecting rod (191), the key (20) is connected with the processor, a notch (1923) is formed in the abutting plate (1922), the key (20) is located in the notch (1923), and the side wall of the notch (1923) extends in a direction away from and inclines in a direction away from the key (20).
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| CN202111168505.5A CN114136452B (en) | 2021-10-08 | 2021-10-08 | Thermally stable detection driver and infrared detector using same |
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| CN202111168505.5A CN114136452B (en) | 2021-10-08 | 2021-10-08 | Thermally stable detection driver and infrared detector using same |
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| CN114136452A (en) | 2022-03-04 |
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Application publication date: 20220304 Assignee: Guangdong weiruidi Technology Co.,Ltd. Assignor: BEIJING VIREADY TECHNOLOGY Co.,Ltd. Contract record no.: X2022990001008 Denomination of invention: A thermally stable detection driver and an infrared detector using the driver License type: Common License Record date: 20230103 |
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