Camera cleaning device and control circuit thereof

Abstract

The utility model relates to a camera cleaning device, the camera comprises a camera body and window glass, the cleaning device can use fresh water to automatically clean the window glass of the camera, the cleaning device comprises a cleaning mechanism and a spraying mechanism, the cleaning mechanism comprises a cleaning motor, an elastic connecting piece, a swing arm and a doctor blade, the cleaning motor is arranged in the camera body, the output end of the cleaning motor is connected with the swing arm and drives the swing arm to swing in a reciprocating mode, the scraping piece is connected to the swing arm through an elastic connecting piece, and the scraping piece is tightly pressed on window glass of the camera. And the spraying mechanism can spray fresh water on window glass of the camera.

Description

Technical Field

[0001] The utility model relates to the technical field of outdoor video monitoring for ships, and particularly relates to a camera cleaning device and its control circuit. Background Art

[0002] At present, the country pays more and more attention to work safety. In order to supervise and manage work safety and illegal operations, video monitoring devices such as cameras are installed at key workplaces in all industries. As an important support ship for offshore oil platforms, the daily working environment of offshore ships is relatively harsh, and safety accidents occur frequently. In order to strengthen the supervision of ship work safety, more and more offshore ships have installed video monitoring devices on the ship deck.

[0003] However, due to the harsh marine environment and high salt content in the air, the window glass of the video monitoring device is extremely easy to be covered by salt crystals, and the salt crystals on the window glass are not easy to remove, resulting in unclear and blurred monitoring images of the video monitoring device, which greatly affects the supervision effect of work safety. Summary of the Utility Model

[0004] In view of the above-mentioned defects of the prior art, the technical problem to be solved by the utility model is to provide a camera cleaning device and its control circuit, which can automatically remove the dust and salt crystals on the window glass of the camera, so that the monitoring image of the camera can always be clear.

[0005] To achieve the above object, the utility model provides a camera cleaning device. The camera includes a camera body and a window glass. The cleaning device can automatically clean the window glass of the camera with fresh water, and includes a cleaning mechanism and a spraying mechanism. The cleaning mechanism includes a cleaning motor, an elastic connecting piece, a swing arm and a wiper. The cleaning motor is arranged inside the camera body. The output end of the cleaning motor is connected to the swing arm and drives the swing arm to swing reciprocally. The wiper is connected to the swing arm through the elastic connecting piece, and the wiper presses tightly on the window glass of the camera. The spraying mechanism can spray fresh water on the window glass of the camera.

[0006] Further, it also includes a rain shield, and the rain shield is fixed above the window glass of the camera.

[0007] Further, the spraying mechanism includes a nozzle, a connecting pipe and a pressure fresh water tank. The nozzle is connected to the pressure fresh water tank through the connecting pipe, and the water outlet end of the nozzle faces the window glass of the camera.

[0008] Further, the material of the nozzle is copper.

[0009] Further, a plurality of water spray holes are provided at the water outlet end of the nozzle, and the plurality of water spray holes can spray fresh water on different areas of the window glass of the camera.

[0010] Further, the material of the wiper blade is an elastic material.

[0011] The present utility model also provides a control circuit for a camera cleaning device, which is used to control the above-mentioned camera cleaning device, and includes a main circuit for controlling the spraying mechanism and a slave circuit for controlling the cleaning mechanism. The main circuit includes a first power supply A, a switch module B, a delay module C and a spraying module D. The first power supply A, the switch module B, the delay module C and the spraying module D are all connected in series. The switch module B includes a start button SB1, a stop button SB2 and a control relay KM. The control relay KM has a normally open contact KM1. The spraying module D includes a solenoid valve YV for controlling the spraying mechanism to spray fresh water. The delay module C includes a time relay KT. The time relay KT has a normally open delay closed contact KT1 and a normally closed delay open contact KT2. The first power supply A, the start button SB1, the stop button SB2, the solenoid valve YV, the control relay KM and the time relay KT are connected in series. The normally open contact KM1 of the control relay KM is connected in parallel with the start button SB1; the slave circuit includes a second power supply E and a cleaning module F. The cleaning module F includes a control unit CU for controlling the cleaning motor. The second power supply E, the normally open delay closed contact KT1 of the time relay KT, the normally closed delay open contact KT2 of the time relay KT and the control unit CU are connected in series.

[0012] As described above, the camera cleaning device and its control circuit involved in the present utility model have the following beneficial effects:

[0013] 1. By providing a cleaning mechanism and a spraying mechanism, the wiper blade can sweep impurities from the window glass of the camera, and the spraying mechanism can wash away the impurities from the window glass of the camera with fresh water, so as to remove impurities such as rainwater, dust and crystal salts on the window glass of the camera, ensuring that the images of video surveillance can remain clear under various weather conditions to cope with the harsh environment at sea.

[0014] 2. By providing a windshield wiper blade and a rain shield, the rain shield can intercept a large number of raindrops from contacting the window glass of the camera, and the wiper blade can sweep away the accumulated water on the window glass, thereby protecting the camera and improving the quality of the monitored images. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic structural diagram of the camera cleaning device in the present utility model.

[0016] Figure 2 It is a schematic diagram of the main circuit in the present utility model.

[0017] Figure 3 This is the schematic diagram of the slave circuit in the present utility model.

[0018] Explanation of the reference numerals in the attached drawings

[0019] 1. Camera, 101. Camera body, 102. Window glass, 2. Cleaning mechanism, 201. Swing arm, 202. Wiper blade, 3. Spraying mechanism, 301. Nozzle, 302. Connecting pipe, 4. Rain shield, A. First power supply, B. Switch module, SB1. Start button, SB2. Stop button, KM. Control relay, KM1. Normally open contact of the control relay, C Delay module, KT. Time relay, KT1. Normally open timed closed contact of the time relay, KT2. Normally closed timed open contact of the time relay, D. Spraying module, VX. Solenoid valve, E. Second power supply, DC. Transformer, F. Cleaning module, CU. Control unit, M. Cleaning motor. Specific embodiments

[0020] The following further details the specific embodiments of the present utility model with reference to the accompanying drawings. These embodiments are only for illustrating the present utility model and are not intended to limit the present utility model.

[0021] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be construed as a limitation of the present utility model. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0022] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0023] In addition, in the description of the present utility model, unless otherwise stated, the meaning of "a plurality of" is two or more.

[0024] See Figures 1 to 3, the present utility model provides a camera cleaning device. The camera 1 includes a camera body 101 and a window glass 102. The cleaning device can automatically clean the window glass 102 of the camera using fresh water, and includes a cleaning mechanism 2 and a spraying mechanism 3. The cleaning mechanism 2 includes a cleaning motor, an elastic connection member, a swing arm 201, and a wiper blade 202. The cleaning motor is arranged inside the camera body 101. Preferably, the cleaning motor is set as a DC electric motor and can change the rotation speed of its output end. The output end of the cleaning motor is connected to the swing arm 201 and drives the swing arm 201 to swing reciprocally. Specifically, when the cleaning motor rotates forward, it can drive the swing arm 201 to rotate clockwise, and when the cleaning motor rotates backward, it can drive the swing arm 201 to rotate counterclockwise. Through the continuous forward and backward rotation of the cleaning motor, the swing arm 201 can swing reciprocally. Preferably, the swing arm 201 is fixed to the output end of the cleaning motor by bolts, and the length extension direction of the swing arm 201 is perpendicular to the axis direction of the output end of the cleaning motor, and the length extension direction of the swing arm 201 is parallel to the window glass 102 of the camera 1. The wiper blade 202 is connected to the swing arm 201 through an elastic connection member, and the wiper blade 202 is pressed tightly against the window glass 102 of the camera 1. Preferably, the elastic connection member is set as a spring, and the wiper blade 202 is connected to the swing arm 201 through three springs, and the three springs are evenly arranged along the length extension direction of the swing arm 201. Preferably, the length of the wiper blade 202 is greater than the length of the window glass 102 of the camera 1. When the cleaning motor drives the swing arm 201 to swing reciprocally, the cleaning range of the wiper blade 202 can cover the entire window glass 102. The spraying mechanism 3 can spray fresh water onto the window glass 102 of the camera 1.

[0025] The basic working principle of the camera cleaning device involved in the present utility model is as follows: During offshore operations, when the monitoring image of the camera 1 is blurred, the cleaning motor is started. The cleaning motor drives the swing arm 201 to swing reciprocally, thereby driving the wiper blade 202 to move reciprocally on the window glass 102 of the camera 1, sweeping away impurities from the window glass 102 of the camera 1. By setting the elastic connection member, the wiper blade 202 can always be pressed tightly against the window glass 102 of the camera 1. The spraying mechanism 3 sprays fresh water onto the window glass 102 of the camera 1, flushing away the impurities from the window glass 102 of the camera. Under the combined action of the cleaning mechanism 2 and the spraying mechanism 3, impurities such as rainwater, dust, and crystal salts on the window glass 102 of the camera 1 can be removed, ensuring that the video monitoring images can remain clear under various weather conditions to cope with the harsh offshore environment.

[0026] See Figures 1 to 3 , the following further illustrates the present utility model with a specific embodiment:

[0027] In this embodiment, see Figure 1, as a preferred design, it further includes a rain shield 4. The rain shield 4 is fixed above the window glass 102 of the camera 1. In special weather environments such as rainy days, the rain shield 4 can intercept a large number of raindrops and prevent the raindrops from contacting the window glass 102 of the camera 1, playing a role in protecting the camera 1 and improving the quality of the monitoring image.

[0028] In this embodiment, refer to Figure 1 , as a preferred design, the spraying mechanism 3 includes a nozzle 301, a connecting pipe 302 and a pressure fresh water tank. The nozzle 301 is connected to the pressure fresh water tank through the connecting pipe 302. The pressure fresh water tank can store fresh water and transport the fresh water to the nozzle 301 through the connecting pipe 302. The water outlet end of the nozzle 301 faces the window glass 102 of the camera 1, and the nozzle 301 can evenly spray the fresh water on the window glass 102 of the camera 1. The fresh water can assist in removing impurities such as salt crystals.

[0029] In this embodiment, refer to Figure 1 , as a preferred design, the material of the nozzle 301 is copper. The copper nozzle 301 has good corrosion resistance, can avoid the nozzle 301 being corroded due to the large salt content in the sea air, and thus improve the durability and service life of the nozzle 301.

[0030] In this embodiment, refer to Figure 1 , as a preferred design, the water outlet end of the nozzle 301 is provided with a plurality of water spraying holes, and the plurality of water spraying holes can spray the fresh water on different areas of the window glass 102 of the camera 1. By controlling the water spraying holes, the spraying direction and range of the fresh water can be controlled.

[0031] In this embodiment, refer to Figure 1 , as a preferred design, the material of the wiper blade 202 is an elastic material, which can generate a large deformation under a small external force and can quickly return to its original state after the external force is removed. On the one hand, it can avoid damaging the window glass 102 of the camera 1 and play a protective role. On the other hand, it can also increase the friction with the window glass 102 of the camera 1, thereby improving the cleaning ability of the wiper blade 202.

[0032] Refer to Figures 1 to 3, the present utility model further provides a control circuit for a camera cleaning device, which is used to control the above-mentioned camera cleaning device. It includes a main circuit for controlling the spraying mechanism 3 and a slave circuit for controlling the cleaning mechanism 2. The main circuit includes a first power supply A, a switch module B, a delay module C, and a spraying module D. The first power supply A, the switch module B, the delay module C, and the spraying module D are all connected in series. The switch module B includes a start button SB1, a stop button SB2, and a control relay KM. The control relay KM has a normally open contact KM1. The spraying module D includes a solenoid valve YV for controlling the spraying of fresh water by the spraying mechanism 3. The delay module C includes a time relay KT. The time relay KT has a normally open delay closed contact KT1 and a normally closed delay open contact KT2. Preferably, the delay time of the normally open delay closed contact KT1 of the time relay KT can be set and adjusted according to actual needs; the first power supply A, the start button SB1, the stop button SB2, the solenoid valve YV, the control relay KM, and the time relay KT are connected in series, and the normally open contact KM1 of the control relay KM is connected in parallel with the start button SB1; the slave circuit includes a second power supply E and a cleaning module F. The cleaning module F includes a control unit CU for controlling the cleaning motor. The second power supply E, the normally open delay closed contact KT1 of the time relay KT, the normally closed delay open contact KT2 of the time relay KT, and the control unit CU are connected in series.

[0033] The basic working principle of the control circuit of the camera cleaning device involved in the present utility model is as follows: When it is necessary to clean the window glass 102 of the camera 1, press the start button SB1, and the control relay KM, the time relay KT, and the solenoid valve YV are all powered on. The normally open contact KM1 of the control relay KM closes, so that the first power supply A, the solenoid valve YV, the time relay KT, and the normally open contact KM1 of the control relay KM form a loop. Among them, when the solenoid valve YV is powered on, the solenoid valve YV controls the spraying mechanism 3 to start working. When the time relay KT is powered on, the normally open delayed closed contact KT1 of the time relay KT closes after a period of time. When the normally open delayed closed contact KT1 of the time relay KT closes, the second power supply E, the control unit CU, the normally open delayed closed contact KT1 of the time relay KT, and the normally closed delayed open contact KT2 of the time relay KT form a loop. When the control unit CU is powered on, the cleaning motor M starts, and the cleaning mechanism 2 starts working. That is, after pressing the start button SB1, the spraying mechanism 3 starts working first, and then the cleaning mechanism 2 starts working. When the window glass 102 of the camera 1 is cleaned, press the stop button SB2, and the control relay KM, the time relay KT, and the solenoid valve YV are all powered off. The normally open contact KM1 of the control relay KM opens. When the solenoid valve YV is powered off, the spraying mechanism 3 stops working. When the time relay KT is powered off, the cleaning mechanism 2 will continue to work until the wiper blade 202 returns to the initial position and then the cleaning mechanism 2 stops working. Specifically, the normally closed delayed open contact KT2 of the time relay KT opens after a period of time. When the normally closed delayed open contact KT2 of the time relay KT opens, the control unit CU is powered off, and the cleaning mechanism 2 stops working. That is, after pressing the stop button SB2, the spraying mechanism 3 stops working first, and then the cleaning mechanism 2 stops working.

[0034] In this embodiment, refer to Figure 1 , as a preferred design, the circuit further includes a transformer DC, and the transformer DC can convert alternating current into direct current.

[0035] As can be seen from the above, the camera cleaning device and its control circuit of the present utility model have the following beneficial effects:

[0036] 1. By setting the cleaning mechanism 2 and the spraying mechanism 3, the wiper blade 202 can sweep impurities from the window glass 102 of the camera 1, and the spraying mechanism 3 can wash away the impurities from the window glass 102 of the camera 1 with fresh water, thereby removing impurities such as rainwater, dust, and crystal salts on the window glass 102 of the camera 1, ensuring that the images of video surveillance can remain clear under various weather conditions to cope with the harsh environment at sea.

[0037] 2. By setting the wiper blade 202 and the rain shield 4, the rain shield 4 can intercept a large amount of raindrops from contacting the window glass 102 of the camera, and the wiper blade 202 can sweep away the accumulated water on the window glass 102, thereby protecting the camera 1 and improving the quality of the monitoring image.

[0038] In summary, the utility model effectively overcomes various disadvantages in the prior art and has high industrial utilization value.

[0039] The above embodiments are only illustrative of the principles and effects of the utility model, and are not intended to limit the utility model. Any person familiar with this technology can modify or change the above embodiments without departing from the spirit and scope of the utility model. Therefore, all equivalent modifications or changes made by those with ordinary knowledge in the technical field without departing from the spirit and technical idea disclosed by the utility model should still be covered by the claims of the utility model.

Claims

1. A camera cleaning device, the camera (1) includes a camera body (101) and a window glass (102), and the cleaning device can automatically clean the window glass (102) of the camera with fresh water, characterized in that: It includes a cleaning mechanism (2) and a spraying mechanism (3). The cleaning mechanism (2) includes a cleaning motor, an elastic connecting member, a swing arm (201) and a wiper blade (202). The cleaning motor is arranged inside the camera body (101). The output end of the cleaning motor is connected to the swing arm (201) and drives the swing arm (201) to swing reciprocally. The wiper blade (202) is connected to the swing arm (201) through the elastic connecting member, and the wiper blade (202) presses against the window glass (102) of the camera (1). The spraying mechanism (3) can spray fresh water on the window glass (102) of the camera (1).

2. The camera cleaning device according to claim 1, wherein: It further includes a rain shield (4), and the rain shield (4) is fixed above the window glass (102) of the camera (1).

3. The camera cleaning device according to claim 1, characterized in that: The spraying mechanism (3) includes a nozzle (301), a connecting pipe (302) and a pressure fresh water tank. The nozzle (301) is connected to the pressure fresh water tank through the connecting pipe (302), and the water outlet end of the nozzle (301) faces the window glass (102) of the camera (1).

4. The camera cleaning device according to claim 3, wherein: The material of the nozzle (301) is copper.

5. The camera cleaning device according to claim 3, wherein: The water outlet end of the nozzle (301) is provided with a plurality of water spraying holes, and the plurality of water spraying holes can spray fresh water on different areas of the window glass (102) of the camera (1).

6. The camera cleaning device according to claim 1, characterized in that: The material of the wiper blade (202) is an elastic material.

7. The control circuit of a camera cleaning device as described in any one of claims 1-6, characterized in that: It includes a main circuit for controlling the spraying mechanism (3) and a slave circuit for controlling the cleaning mechanism (2). The main circuit includes a first power supply A, a switch module B, a delay module C and a spraying module D. The first power supply A, the switch module B, the delay module C and the spraying module D are all connected in series. The switch module B includes a start button SB1, a stop button SB2 and a control relay KM. The control relay KM has a normally open contact KM1. The spraying module D includes a solenoid valve YV for controlling the spraying of fresh water by the spraying mechanism (3). The delay module C includes a time relay KT. The time relay KT has a normally open delayed closed contact KT1 and a normally closed delayed open contact KT2. The first power supply A, the start button SB1, the stop button SB2, the solenoid valve YV, the control relay KM and the time relay KT are connected in series. The normally open contact KM1 of the control relay KM is connected in parallel with the start button SB1. The slave circuit includes a second power supply E and a cleaning module F. The cleaning module F includes a control unit CU for controlling the cleaning motor. The second power supply E, the normally open delayed closed contact KT1 of the time relay KT, the normally closed delayed open contact KT2 of the time relay KT and the control unit CU are connected in series.

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