CN208724060U - A kind of video security monitoring device - Google Patents

Abstract

The utility model relates to the technical field of security accessories, in particular to a video security monitoring device. In order to solve the problem that the monitoring device in the prior art is not easy to clean, the utility model comprises a casing, a lens fixedly connected to one end of the casing, and a lens mounted in the casing. The technical solution of a camera that captures images through a lens is that the housing is provided with a wiping component for wiping the lens, and the housing is provided with a wiping component for detecting the dust concentration on the lens and controlling the wiping component The open and closed detection components are automatically cleaned when there is a lot of dust on the monitoring device, thereby improving the cleaning efficiency and picture shooting quality of the monitoring device.

Description

A video security monitoring device

technical field

The utility model relates to the technical field of security accessories, in particular to a video security monitoring device.

Background technique

Security, for the purpose of maintaining social and public safety, using security products and other related products to form intrusion alarm system, video security monitoring system, entrance and exit control system, BSV LCD video wall system, access control fire protection system, explosion-proof safety inspection system, etc.; or an electronic system or network composed or integrated of these systems as subsystems.

Video security monitoring system is an electronic system or network that uses video technology to detect and monitor fortified areas and display and record live images in real time. In the process of video surveillance, a surveillance device including a camera for image acquisition is essential. The live image is captured by the camera and then transmitted to the server for processing and delivery or storage.

The quality of information collection is not only related to the installation position of the camera and pixel parameters, etc., but also the dust concentration of the lens in front of the camera is also an important factor affecting the quality of the image captured by the camera. When a lot of dust adheres to the lens of the monitoring device, the photographed image is blocked by the dust, which is likely to cause a safety hazard. However, in the prior art, most of the staff are required to clean and wipe the corresponding position of the monitoring device periodically or according to the image transmission result, which is very inefficient.

Utility model content

The purpose of the utility model is to provide a video security monitoring device, which can be cleaned automatically when there is a lot of dust on the monitoring device, thereby improving the cleaning efficiency and picture shooting quality of the monitoring device.

The above-mentioned technical purpose of the utility model is achieved through the following technical solutions:

A video security monitoring device, comprising a casing, a lens fixedly connected to one end of the casing, and a camera installed in the casing and capturing images through the lens, the casing is provided with a wiping component for wiping the lens, and the The housing is provided with a detection component for detecting the dust concentration on the lens and controlling the opening and closing of the wiping component.

By adopting the above technical solution, the dust concentration on the lens is detected by the detection component, and when the dust concentration is high, the wiping component is activated, and the wiping component wipes and scrapes the dust on the lens, thereby reducing the dust concentration on the lens. The cleaning effect of the lens further improves the shooting quality and cleaning efficiency of the monitoring device.

The utility model is further arranged as follows: the wiping assembly comprises a bidirectional threaded screw rod rotatably connected to the casing, a positioning rod fixedly connected to the casing and arranged parallel to the bidirectional threaded screw rod, sleeved on the bidirectional threaded screw rod and the positioning rod The wiper is externally threaded with the bidirectional threaded screw and pressed against the lens to wipe the lens, and a drive motor mounted on the housing for driving the bidirectional threaded screw to rotate to drive the wiper to wipe the lens.

By adopting the above technical solution, when the power supply circuit of the driving motor is turned on, the driving motor drives the bidirectional threaded screw to rotate. Since the wiper is threadedly connected to the bidirectional threaded screw, the wiper is on the positioning rod when the bidirectional threaded screw rotates. It reciprocates along the axis of the bidirectional threaded screw under the limit.

The utility model is further configured as follows: the bidirectional threaded screw rod is arranged vertically.

By adopting the above technical solution, the vertically arranged wiping member enables the wiping member to reciprocate up and down, so that the dust peeled off the lens can be directly dropped by gravity, thereby improving the cleaning efficiency of the dust.

The utility model is further configured as follows: the wiper comprises a mounting frame sleeved on the outside of the bidirectional threaded screw rod and the positioning rod and threadedly matched with the bidirectional threaded screw rod, and a mounting groove opened on the side wall of the mounting frame and extending in the horizontal direction , a connecting frame inserted in the installation groove, and a sponge block fixedly connected to the connecting frame and pressed against the lens.

By adopting the above technical solutions, the mounting frame realizes the cooperation with the bidirectional threaded screw rod and the positioning rod, and the connecting frame inserted into the installation groove realizes the installation and sliding control of the sponge block. The sponge block is soft in texture and high in quality. Lighter and lower cost, it is convenient for the mounting frame to drive the sponge block to slide, and at the same time, the scratches on the lens are reduced.

The utility model is further provided that: the side wall of the mounting frame located above the mounting groove is rotatably connected with a limiting piece for preventing the connecting frame from sliding out of the mounting groove under external force.

By adopting the above technical solution, when the limit piece is in a natural state, the limit piece intercepts the moving path of the connecting frame in the installation groove due to the action of gravity, and the limit piece reduces the amount of the connecting frame driving the sponge block during the wiping process of the wiping piece. The phenomenon of detaching from the mounting frame occurs under external force factors, thereby improving the wiping reliability of the wiping assembly.

The utility model is further configured as follows: a first metal sheet is fixedly connected to the side wall of the connecting frame, and a magnet sheet for attracting and engaging with the first metal sheet is fixedly connected to the side wall of the limiting sheet.

By adopting the above technical solution, the connection stability between the limit piece and the connecting frame is further improved through the first metal sheet and the iron-absorbing sheet, thereby reducing the shaking of the limit piece and further improving the wiping reliability of the wiping assembly; Or when installing the connecting frame, it is only necessary to turn the limit piece to overcome the attraction force between the magnet piece and the first metal piece.

The utility model is further provided that: the side wall of the mounting frame located above the mounting groove is fixedly connected with a second metal sheet for cooperating with the magnet sheet so as to fix the limiting sheet above the mounting groove.

By adopting the above-mentioned technical solution, through the attraction and fixation between the second metal sheet and the magnet sheet, the state in which the limit piece is fixed and non-intercepting the movement path of the connecting frame is realized, and the disassembly and installation of the connecting frame is facilitated. When the disassembly of the connecting frame is completed, the Or after installation, overcoming the attraction force between the magnet piece and the second metal piece can realize the change of the position state of the limit piece.

The utility model is further arranged as follows: the detection component comprises:

Fixed block, fixedly connected in the shell;

Dust sensor, installed at one end of the fixed block close to the lens, is used to detect the concentration of dust attached to the lens and output the detection value of dust concentration;

a comparison circuit, coupled to the output end of the dust sensor to receive the dust concentration detection value, and output a comparison signal after comparing with the preset value;

The execution circuit is coupled to the output end of the comparison circuit to receive the comparison signal and control the opening and closing of the driving motor.

By adopting the above technical scheme, when the dust sensor on the fixed block detects that the dust concentration detection value is greater than the preset value of the comparison circuit, the comparison circuit outputs a high-level comparison signal, and the execution circuit controls the control after receiving the high-level comparison signal. The drive motor acts to drive the bidirectional threaded screw to rotate.

To sum up, the utility model has the following beneficial effects:

The dust concentration on the lens is detected by the detection component, and the wiping component is activated when the dust concentration is high, and the wiping component wipes and scrapes the dust on the lens, thereby reducing the dust concentration on the lens and realizing the cleaning effect of the lens. Further improve the shooting quality and cleaning efficiency of the monitoring device;

Through the cooperation of the limiting piece with the connecting frame and the mounting frame, the wiping reliability of the wiping element is further improved, and the convenience of installation and disassembly of the connecting frame is also improved.

Description of drawings

Fig. 1 is the overall structure schematic diagram of this embodiment;

FIG. 2 is a schematic diagram of the partial structure of the present embodiment, mainly showing the structure of the wiper;

FIG. 3 shows the structure of the detection assembly in this embodiment.

Reference numerals: 1, housing; 2, lens; 3, camera; 4, protective cover; 5, wiping assembly; 6, detection assembly; 7, first extension block; 8, second extension block; 9, third extension block; 10, fourth extension block; 11, bidirectional threaded screw; 12, positioning rod; 13, drive motor; 14, wiper; 15, mounting frame; 16, mounting groove; 17, connecting frame; 18, sponge block ; 19, limit piece; 20, first metal piece; 21, magnet piece; 22, second metal piece; 23, fixed block; 24, dust sensor; 25, comparison circuit; 26, executive circuit.

Detailed ways

The present utility model will be described in further detail below in conjunction with the accompanying drawings.

A video security monitoring device, as shown in Figure 1, includes a housing 1, one end of the housing 1 is open, the end of the housing 1 at the open end is fixedly connected with a lens 2, the end surface of the lens 2 is flush with the end surface of the housing 1, and the housing 1 A camera 3 is installed inside to capture images of the environment through the lens 2 . A protective cover 4 is fixedly connected to the housing 1 , and the protective cover 4 is used to cover and protect the housing 1 and the lens 2 .

In order to improve the efficiency of the lens 2, the housing 1 is provided with a wiping component 5 and a detection component 6. The wiping component 5 is used to wipe the lens 2. The detection component 6 is used to detect the dust concentration on the lens 2 and control the wiping component. 5 open and close.

The wiper assembly 5 includes a first extension block 7, a second extension block 8, a third extension block 9, and a fourth extension block 10, which are respectively fixedly connected to the end of the housing 1 and are rotatably connected to the lens 2. The first extension block 7 and The third extension block 9 is located on the side wall above the casing 1, the second extension block 8 and the fourth extension block 10 are located on the side wall below the casing, and the first extension block 7 and the second extension block 8 are rotated through bearings A bidirectional threaded screw rod 11 is connected, and the bidirectional threaded screw rod 11 is arranged vertically. A positioning rod 12 is fixedly connected between the third extension block 9 and the fourth extension block 10 , and the positioning rod 12 is parallel to the bidirectional threaded screw rod 11 . A drive motor 13 is installed on the first extension block 7 , and the output shaft of the drive motor 13 passes through the first extension block 7 and is fixedly connected to the top end of the bidirectional threaded screw 11 . The bidirectional threaded screw 11 and the positioning rod 12 are covered with a wiper 14 , the wiper 14 is threadedly fitted with the bidirectional screw rod 11 , and the wiper 14 is pressed against the lens 2 for wiping the lens 2 .

Wherein, the bidirectional threaded screw 11 and the positioning rod 12 are respectively disposed on both sides of the camera 3 and do not block the acquisition range of the camera 3 .

When the power supply circuit of the driving motor 13 is turned on, the driving motor 13 drives the bidirectional threaded screw 11 to rotate. Since the wiper 14 is threadedly connected with the bidirectional threaded screw 11, when the bidirectional threaded screw 11 rotates, the wiper 14 moves along the vertical direction. The reciprocating motion in the straight direction realizes the wiping of the lens 2 .

As shown in FIG. 2 , the wiper 14 includes a mounting frame 15 sleeved on the two-way threaded screw rod 11 and the positioning rod 12 , and the mounting frame 15 is threadedly matched with the two-way threaded screw rod 11 , and the side wall on one side of the mounting frame 15 is A mounting groove 16 extending in the horizontal direction but not passing through is provided. A connecting frame 17 is inserted into the mounting groove 16. A sponge block 18 is fixedly connected to the side wall of the connecting frame 17 close to the lens 2, and the sponge block 18 is pressed against the lens 2. .

In order to reduce the occurrence of the phenomenon that the connecting frame 17 drives the sponge block 18 to detach from the mounting frame 15 under external force, the side wall of the mounting frame 15 located above the mounting groove 16 is connected to the limiting piece 19 through the rotation of the pin shaft, and the rotation of the limiting piece 19 The point is offset from the center point of the limiting piece 19 , and the limiting piece 19 extends to the sliding path of the connecting frame 17 along the mounting groove 16 in a natural state.

In order to improve the interception stability of the limiting piece 19 , the side wall of the connecting frame 17 is fixedly connected with the first metal sheet 20 , and the side wall of the limiting piece 19 is fixedly connected with a magnet sheet for attracting with the first metal sheet 20 . 21 , a second metal sheet 22 for cooperating with the magnet sheet 21 to fix the limiting sheet 19 above the mounting slot 16 is fixedly connected to the side wall of the mounting bracket 15 above the mounting slot 16 .

As shown in Figures 1 and 3, the detection assembly 6 includes:

The fixing block 23 is fixedly connected to the inner wall of the housing 1;

The dust sensor 24 is installed at one end of the fixed block 23 close to the lens 2, and is used to detect the concentration of dust attached to the lens 2 and output the detection value of the dust concentration;

The comparison circuit 25 is coupled to the output end of the dust sensor 24 to receive the dust concentration detection value, and output a comparison signal after comparing with the preset value;

The execution circuit 26 is coupled to the output end of the comparison circuit 25 to receive the comparison signal and control the opening and closing of the driving motor 13 .

The comparison circuit 25 includes a comparator A, a resistor R1 and a resistor R2, the non-inverting terminal of the comparator A is coupled to the output terminal of the dust sensor 24, the resistor R1 is connected in series between the inverting terminal of the comparator A and the direct current VCC, and the resistor R2 It is connected in series between the inverting terminal of the comparator A and the ground, and the voltage value across the resistor R2 is the preset value of the comparison circuit 25

The execution circuit 26 includes a transistor Q1, a freewheeling diode D1, and a relay KM1. The base of the transistor Q1 is coupled to the output end of the comparator A, the emitter of the transistor Q1 is grounded, the relay KM1 has a coil and a normally open contact, the coil of the relay KM1 is connected in series between the collector of the transistor Q1 and the direct current VCC, the relay The normally open contact of KM1 is connected in series to the power supply circuit of the driving circuit of the driving motor 13 , the anode of the freewheeling diode D1 is coupled to the collector of the transistor Q1 , and the cathode of the freewheeling diode D1 is coupled to the DC current VCC.

When the drive circuit of the drive motor 13 is triggered by a rising edge, the drive circuit of the drive motor 13 controls the output shaft of the drive motor 13 to rotate a specific angle, so that the wiper 14 descends to wipe the lens 2 and then rises and resets. This process is a cycle process.

When the dust sensor 24 on the fixed block 23 detects that the dust concentration detection value is greater than the preset value of the comparison circuit 25, the comparison circuit 25 outputs a high-level comparison signal, and the transistor Q1 is turned on after receiving the high-level comparison signal , the power supply circuit of the drive circuit of the drive motor 13 is turned on, thereby driving the output shaft of the drive motor 13 to rotate to drive the bidirectional threaded screw 11 to rotate, so that the wiper 14 performs a periodic motion and then resets, waiting for the next trigger.

This specific embodiment is only an explanation of the present utility model, and it is not a limitation of the present utility model. Those skilled in the art can make modifications to the present embodiment without creative contribution as needed after reading this specification, but as long as the utility model is used in the present invention All new types of claims are protected by the patent law.

Claims (8)

1. A video security monitoring device, comprising a casing (1), a lens (2) fixedly connected to one end of the casing (1), and a camera (2) mounted in the casing (1) and capturing images through the lens (2). 3), characterized in that: the housing (1) is provided with a wiping component (5) for wiping the lens (2), and the housing (1) is provided with dust on the lens (2) A detection component (6) for detecting the concentration and controlling the opening and closing of the wiping component (5). 2. A video security monitoring device according to claim 1, characterized in that: the wiping assembly (5) comprises a bidirectional threaded screw (11) rotatably connected to the casing (1), and fixedly connected to the casing (11). 1) A positioning rod (12) provided on and parallel to the two-way threaded screw (11), sleeved outside the two-way screwed screw (11) and the positioning rod (12) and threadedly matched with the two-way screwed screw (11) and A wiper (14) pressed against the lens (2) for wiping the lens (2), and a wiper (14) mounted on the housing (1) for driving the bidirectional threaded screw (11) to rotate so as to drive the wiper (14) to wipe the lens (14). 2) A drive motor (13) for wiping. 3 . The video security monitoring device according to claim 2 , wherein the bidirectional threaded screw ( 11 ) is vertically arranged. 4 . 4. A video security monitoring device according to claim 3, characterized in that: the wiper (14) comprises a two-way threaded screw (11) and a positioning rod (12) sleeved outside the two-way threaded screw A mounting bracket (15) with which the rod (11) is threaded, a mounting slot (16) opened on the side wall of the mounting bracket (15) and extending in the horizontal direction, and a connecting bracket (17) inserted into the mounting slot (16) , and a sponge block (18) fixedly connected to the connecting frame (17) and pressed against the lens (2). 5. A video security monitoring device according to claim 4, characterized in that: a side wall of the mounting bracket (15) located above the mounting groove (16) is rotatably connected with a device for preventing the connecting bracket (17) from sliding out under external force. Install the limit piece (19) of the slot (16). 6. A video security monitoring device according to claim 5, characterized in that: a first metal sheet (20) is fixedly connected to the side wall of the connecting frame (17), and the limiting sheet (19) A magnet sheet (21) for attracting and engaging with the first metal sheet (20) is fixedly connected to the side wall of the metal sheet. 7. A video security monitoring device according to claim 6, characterized in that: a side wall of the mounting bracket (15) located above the mounting groove (16) is fixedly connected with a magnet sheet (21) for cooperating with the limiter The position piece (19) is fixed on the second metal piece (22) above the installation groove (16). 8. A video security monitoring device according to claim 2, wherein the detection component (6) comprises: The fixing block (23) is fixedly connected in the casing (1); a dust sensor (24), installed at one end of the fixing block (23) close to the lens (2), used for detecting the concentration of dust adhering to the lens (2) and outputting the detection value of the dust concentration; a comparison circuit (25), coupled to the output end of the dust sensor (24) to receive the dust concentration detection value, and output a comparison signal after comparing with a preset value; The execution circuit (26) is coupled to the output end of the comparison circuit (25) to receive the comparison signal and control the opening and closing of the driving motor (13).