CN108043799B - Electric power monitoring device with alarm function - Google Patents
Electric power monitoring device with alarm function Download PDFInfo
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- CN108043799B CN108043799B CN201711430947.6A CN201711430947A CN108043799B CN 108043799 B CN108043799 B CN 108043799B CN 201711430947 A CN201711430947 A CN 201711430947A CN 108043799 B CN108043799 B CN 108043799B
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- central body
- monitoring device
- camera
- lens
- power
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
- B08B3/02—Cleaning by the force of jets or sprays
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
- G08B21/18—Status alarms
- G08B21/185—Electrical failure alarms
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/34—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
- H02J7/35—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering with light sensitive cells
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Accessories Of Cameras (AREA)
- Studio Devices (AREA)
Abstract
The invention discloses an electric power monitoring device with an alarm function, and belongs to the technical field of monitoring facilities. The power monitoring device with the alarm function comprises a support, a camera, a cleaning mechanism and a power-off alarm, wherein the camera comprises a body and a cover body, the body is provided with a lens, the cleaning mechanism comprises a container and a sprayer, a cleaning liquid in the container is extracted to the sprayer by a water pump and is sprayed out of the sprayer, and the power-off alarm is arranged in a circuit of the camera and can give an alarm when the camera is powered off. The power monitoring device with the alarm function can clean the lens of the power monitoring device to ensure the cleanliness of the lens, has better shooting effect, can alarm when the power is cut off to remind workers that the camera fails, is convenient to overhaul in time, and reduces property loss caused by damage of lawbreakers.
Description
Technical Field
The invention relates to the technical field of monitoring facilities, in particular to a power monitoring device with an alarm function.
Background
In the field of electric power, an electric power monitoring system is often used to monitor electric power facilities such as cables to prevent damage by lawbreakers.
The basis among the electric power monitored control system is surveillance camera head, and as is known, the place of monitoring to the electric power facility is often outdoor, and outdoor environment is more complicated, and the dust is great, leads to surveillance camera head's camera lens to be covered by the dust easily to influence surveillance camera head's normal control.
Disclosure of Invention
The invention aims to provide a power monitoring device with an alarm function, which can clean a lens of the power monitoring device to ensure the cleanness of the lens and has better shooting effect.
In order to solve the technical problems, the invention provides the following technical scheme:
a power monitoring device with an alarm function comprises a bracket, a camera, a cleaning mechanism and a power-off alarm, the bracket is fixed on the wire frame through a bolt, the camera is supported on the bracket and comprises a body and a cover body, the body is provided with a lens for monitoring video shooting, the cover body is arranged at the top of the body and is used for shielding the top of the lens, the cleaning mechanism comprises a container and a plurality of nozzles, cleaning liquid is contained in the container, the nozzles are annularly distributed around the lens, the spray head is communicated with the container through a water pipe, a water pump is arranged on the water pipe and is used for pumping the cleaning liquid in the container to the spray head and spraying the cleaning liquid out of the spray head, the outage alarm set up in the circuit of camera and can be in the warning when the camera outage.
Furthermore, one side of the cover body close to the body is provided with a containing groove, the top of the cover body is provided with a motor containing part, the motor containing part is provided with a motor cavity, the motor cavity is communicated with the containing groove, the cleaning mechanism further comprises a cleaning piece, the cleaning piece comprises a connecting rod, a cleaning head, a power motor and a telescopic rod, the cleaning head is rotatably arranged on the connecting rod around the axis of the cleaning head, the power motor is fixed on the connecting rod and is used for driving the cleaning head to rotate so as to enable the cleaning head to clean the lens when in contact with the lens, one end of the connecting rod is hinged with the cover body so as to enable the connecting rod and the cleaning head to be embedded into the containing groove and the power motor to be embedded into the motor cavity, and the rotation axis of the cleaning head is vertical to the rotation axis of the connecting rod relative to the rotation axis of the cover, be provided with the spout on the connecting rod, the spout is followed the length direction of connecting rod extends, the one end of telescopic link with the internal surface of motor portion of holding is articulated, the other end of telescopic link articulates there is the slider, slider slidable inlays to be located in the spout, the telescopic link is scalable and can drive the connecting rod is rotatory, so that the connecting rod is accomodate to hold in the recess or follow stretch out in the recess.
Further, it includes central body and six at least surrounds to wipe the head, the central body with power motor's output shaft is coaxial fixed and can rotate in step, six at least surrounds are followed the circumference evenly distributed of central body, the surround is the arc, the central body with being close to of surround one side of camera lens is provided with cleans the sponge, the one end of surround with the central body is connected, and is followed and is close to the one end of central body is to keeping away from the one end of central body, the tangent line of surround with distance between the axis of central body increases gradually, the crooked direction of surround with wipe the rotation direction of head unanimously.
Furthermore, two sides of the surrounding body are respectively provided with a convex surface and a concave surface, the convex surface is intersected with the concave surface, the concave surface is positioned at the upstream of the concave surface, the distance between the tangent line of the convex surface and the axis of the central body is gradually increased, and the distance between the tangent line of the concave surface and the axis of the central body is gradually increased; the distance of the protruding face is far away from the straight line of the tangent line at one end of the central body is a first straight line, two adjacent surrounding bodies are far away from the straight line of the connecting line at one end of the central body is a second straight line, the straight line of the water flow sprayed by the spray head is a third straight line, the distance between the first straight line and the axis of the central body is equal to the distance between the third straight line and the axis of the central body, the distance between the second straight line and the axis of the central body is greater than the distance between the third straight line and the axis of the central body, the direction of the water flow sprayed by the spray head is opposite to the direction of rotation of the central body, so that the same water flow sprayed by the spray head firstly contacts with the same surrounding bodies and then contacts with the protruding face.
Further, the support has base and grudging post, the grudging post is scalable to make the height-adjustable of camera, the camera with support detachable connects.
Further, the power monitoring device further comprises a solar cell panel and a storage battery, wherein the solar cell panel is arranged at the top of the cover body and used for charging the storage battery, and the storage battery is used for supplying power to the camera.
Further, the electric power monitoring device further comprises a dryer, the dryer is arranged on the body, and the dryer is located on the periphery of the lens and faces the opening of the lens.
Further, the electric power monitoring device further comprises a controller and a timer, wherein the controller controls the cleaning mechanism to clean the lens at regular time through the timer.
The invention has the following beneficial effects:
the invention discloses a power monitoring device with an alarming function, which comprises a support, a camera, a cleaning mechanism and a power-off alarm, wherein the camera comprises a body and a cover body, the body is provided with a lens, the cleaning mechanism comprises a container and a spray head, a water pump extracts cleaning liquid in the container to the spray head and sprays out of the spray head, and the power-off alarm is arranged in a circuit of the camera and can alarm when the camera is powered off.
The power monitoring device with the alarm function can clean the lens of the power monitoring device to ensure the cleanliness of the lens, has better shooting effect, can alarm when the power is cut off to remind workers that the camera fails, is convenient to overhaul in time, and reduces property loss caused by damage of lawbreakers.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments are briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a power monitoring apparatus with an alarm function according to an embodiment of the present invention;
FIG. 2 is a circuit diagram of a power down alarm;
FIG. 3 is a cross-sectional view of FIG. 1;
FIG. 4 is an enlarged partial schematic view of FIG. 3;
fig. 5 is a schematic structural diagram of the erasing head and the lens.
The reference numerals correspond to the following:
10-a power monitoring device;
11-a scaffold; 12-a camera; 13-a cleaning mechanism; 14-a power-off alarm;
120-a body; 121-a cover; 122-lens; 123-a motor housing; 130-a spray head; 131-a connecting rod; 132-a wiping head; 133-a power motor; 134-a telescoping rod; 135-a receiving recess; 136-a slider; 137-a central body; 138-surround.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.
Fig. 1 is a schematic structural diagram of a power monitoring apparatus with an alarm function according to an embodiment of the present invention; FIG. 2 is a circuit diagram of a power down alarm; FIG. 3 is a cross-sectional view of FIG. 1; FIG. 4 is an enlarged partial schematic view of FIG. 3; fig. 5 is a schematic structural diagram of the erasing head and the lens.
Referring to fig. 1 and 2, an embodiment of the invention provides a power monitoring device 10 with an alarm function, where the power monitoring device 10 includes a bracket 11, a camera 12, a cleaning mechanism 13, and a power-off alarm 14.
Wherein, the bracket 11 is fixed on the wire frame through bolts, and the camera 12 is supported on the bracket 11.
The stand 11 has a base and a stand which is retractable to allow the height of the camera 12 to be adjustable, the camera 12 being detachably connected to the stand 11.
The structure of the camera 12 can refer to the prior art, the camera 12 includes a body 120 and a cover 121, the body 120 has a lens 122 for taking surveillance videos, the cover 121 is disposed on the top of the body 120 and used for shielding the top of the lens 122, and the cover 121 is mainly used for shielding rainwater, sunlight, and the like.
The power-off alarm 14 is provided in the circuit of the camera 12 and can alarm when the camera 12 is powered off. The power failure alarm 14 can adopt the prior art, and can also adopt the structure in fig. 2, and is more suitable for the power failure alarm of alternating current.
The alternating current is half-wave rectified by a diode D1 and is connected with resistors R1, R2, R3 and R4 in series to form a voltage divider, and a smaller voltage is divided on R3 to control the working states of a transistor T1 and a MOS field effect transistor T2. The buzzer Bz1 sounds an alarm as soon as the ac power is cut off or the voltage is too low.
Because the diode D1 performs half-wave rectification, a pulse dc signal is sent to the transistor T1, and under the normal condition of the ac power voltage, the voltage on R3 can keep the T1 turned on, and the fet is in the off state. Once the ac grid voltage is below 50v, the voltage at R3 drops below the threshold required for T1 to turn on, T1 turns off, and the gate voltage at T2 rises. It is sufficient to turn on T2 and the buzzer sounds a strong alarm.
In order that the alarm consumes substantially no power under normal ac mains conditions, the resistors in the voltage divider are high resistance and the current through these resistors is less than 10 μ a. T2 is MOS field effect transistor. R5 can be selected to have a 10M Ω resistance (due to the small MOS gate current) when T1 is on and T2 is off. The current passing through the circuit is only about 1 muA, the common battery can be used for several years, and the buzzer consumes 5mA from a CEP-2260A.9V power supply.
The alarm is simple in test, after the alarm is installed, an alternating current power supply is inserted, the buzzer does not sound, and the buzzer is pulled out of an alternating current power supply socket and emits strong sound to indicate that a circuit works normally. However, it is to be noted that: if the circuit is plugged into the AC mains supply, the battery can never be touched!
Referring to fig. 3, the cleaning mechanism 13 includes a container and a plurality of nozzles 130, the cleaning liquid is contained in the container, the nozzles 130 are annularly distributed around the lens 122, the nozzles 130 are communicated with the container through a water pipe, and a water pump is disposed on the water pipe and is used for pumping the cleaning liquid in the container to the nozzles 130 and spraying the cleaning liquid from the nozzles 130.
One side of the cover body 121 close to the body 120 is provided with an accommodating groove 135, the top of the cover body 121 is provided with a motor accommodating part 123, the motor accommodating part 123 is provided with a motor cavity, and the motor cavity is communicated with the accommodating groove 135.
In addition, the cleaning mechanism 13 includes a wiper including a connecting rod 131, a wiping head 132, a power motor 133, and a telescopic rod 134.
The wiping head 132 is rotatably disposed on the connecting rod 131 around its axis, and the power motor 133 is fixed on the connecting rod 131 and is used for driving the wiping head 132 to rotate, so that the wiping head 132 can wipe the lens 122 when contacting the lens 122.
One end of the connection rod 131 is hinged to the cover 121 so that the connection rod 131 and the wiping head 132 can be inserted into the receiving recess 135 and the power motor 133 is inserted into the motor cavity, and the rotation axis of the wiping head 132 is perpendicular to the rotation axis of the connection rod 131 relative to the cover 121.
Referring to fig. 4, a sliding groove is formed in the connecting rod 131, the sliding groove extends along a length direction of the connecting rod 131, one end of the telescopic rod 134 is hinged to an inner surface of the motor accommodating portion 123, the other end of the telescopic rod 134 is hinged to a sliding block 136, the sliding block 136 is slidably embedded in the sliding groove, and the telescopic rod 134 is retractable and can drive the connecting rod 131 to rotate, so that the connecting rod 131 is accommodated in the accommodating groove 135 or extends out of the accommodating groove 135.
Referring to fig. 5, in order to prevent the wiping head 132 from splashing water during the wiping process, the wiping head 132 includes a central body 137 and at least six surrounding bodies 138, the central body 137 is coaxially fixed with the output shaft of the power motor 133 and can rotate synchronously, the at least six surrounding bodies 138 are uniformly distributed along the circumference of the central body 137, the surrounding bodies 138 are arc-shaped members, and wiping sponges are disposed on the central body 137 and one side of the surrounding bodies 138 close to the lens 122.
One end of the surround 138 is connected to the central body 137, and a distance between a tangent of the surround 138 and an axis of the central body 137 gradually increases from an end close to the central body 137 to an end far from the central body 137.
The both sides of encirclement body 138 are protruding face and sunken face respectively, and protruding face intersects with sunken face, and sunken face is located sunken upstream of face, and the distance between the tangent line of protruding face and the axis of central body 137 increases gradually and the distance between the tangent line of sunken face and the axis of central body 137 increases gradually.
The bending direction of the surrounding body 138 is the same as the rotation direction of the wiping head 132, and as shown in fig. 3, "the bending direction of the surrounding body 138 is the same as the rotation direction of the wiping head 132" means that the wiping head 132 rotates clockwise in the view of fig. 2, the surrounding body 138 bends clockwise, and if the direction of the wiping head 132 is opposite, the direction of the surrounding body 138 is also opposite.
The principle of no water splashing is as follows: when rivers got into the space between two surrounds 138, can flow the depressed surface of surround 138, rivers flow along the crooked direction of depressed surface, and the depressed surface can cushion rivers, reduces the impact force of rivers, avoids splashing.
In addition, the bending direction of the surrounding body 138 is consistent with the rotating direction of the wiping head 132, so that water splashing caused by high-speed rotation of the wiping head 132 can be avoided.
In addition, this embodiment still provides better splashproof water scheme:
for convenience of description, the following definitions are made: the straight line of the tangent line of one end of each convex surface far away from the central body 137 is a first straight line, the straight line of the connecting line of one ends of the two adjacent surrounding bodies 138 far away from the central body 137 is a second straight line, and the straight line of the water flow sprayed by the spray head 130 is a third straight line.
The distance between the first straight line and the axis of the central body 137 is equal to the distance between the third straight line and the axis of the central body 137, the distance between the second straight line and the axis of the central body 137 is greater than the distance between the third straight line and the axis of the central body 137, and the direction of the water flow sprayed by the spray head 130 is opposite to the rotation direction of the central body 137, so that the water flow sprayed by the same spray head 130 contacts the concave surface of the same surrounding body 138 before contacting the convex surface.
The power monitoring device 10 may further include a solar cell panel, a storage battery and a dryer, the solar cell panel is disposed on the top of the cover 121, the solar cell panel is used for charging the storage battery, and the storage battery is used for supplying power to the camera 12.
The dryer is disposed on the body 120, and the dryer is located at the periphery of the lens 122 and opens toward the lens 122.
In addition, according to needs, the cleaning mechanism 13 can be automatically controlled, manpower and material resources are reduced, and the working efficiency is effectively improved, and the power monitoring device 10 further comprises a controller and a timer, wherein the controller controls the cleaning mechanism 13 to clean the lens 122 at regular time through the timer.
The power monitoring device 10 with the alarm function comprises a support 11, a camera 12, a cleaning mechanism 13 and a power-off alarm 14, wherein the camera 12 comprises a body 120 and a cover 121, the body 120 is provided with a lens 122, the cleaning mechanism 13 comprises a container and a spray head 130, a water pump pumps cleaning liquid in the container to the spray head 130 and sprays out of the spray head 130, and the power-off alarm 14 is arranged in a circuit of the camera 12 and can alarm when the camera 12 is powered off.
The power monitoring device 10 with the alarm function provided by the invention can clean the lens 122 of the power monitoring device 10 to ensure the cleanliness of the lens 122, and has better shooting effect, and in addition, the power monitoring device 10 can alarm when power is off to remind workers that the camera 12 has a fault, so that the power monitoring device is convenient to overhaul in time, and property loss caused by damage of lawbreakers is reduced.
The above-mentioned embodiments are merely descriptions of the preferred embodiments of the present invention, and do not limit the concept and scope of the present invention, and various modifications and improvements made to the technical solutions of the present invention by those skilled in the art should fall into the protection scope of the present invention without departing from the design concept of the present invention, and the technical contents of the present invention as claimed are all described in the technical claims.
Claims (7)
1. The utility model provides a possesses alarm function's electric power monitoring device which characterized in that: the electric power monitoring device comprises a support (11), a camera (12), a cleaning mechanism (13) and a power-off alarm (14), wherein the support (11) is fixed on a wire frame through bolts, the camera (12) is supported on the support (11), the camera (12) comprises a body (120) and a cover body (121), the body (120) is provided with a lens (122) used for monitoring video shooting, the cover body (121) is arranged at the top of the body (120) and used for shielding the top of the lens (122), the cleaning mechanism (13) comprises a container and a spray head (130), cleaning liquid is contained in the container, the spray head (130) is in multiple numbers and is annularly distributed around the lens (122), the spray head (130) is communicated with the container through a water pipe, and a water pump is arranged on the water pipe, the water pump is used for pumping the cleaning liquid in the container to the spray head (130) and spraying the cleaning liquid out of the spray head (130), and the power-off alarm (14) is arranged in a circuit of the camera (12) and can give an alarm when the camera (12) is powered off;
one side, close to the body (120), of the cover body (121) is provided with an accommodating groove (135), the top of the cover body (121) is provided with a motor accommodating part (123), the motor accommodating part (123) is provided with a motor cavity, the motor cavity is communicated with the accommodating groove (135), the cleaning mechanism (13) further comprises a cleaning piece, the cleaning piece comprises a connecting rod (131), a cleaning head (132), a power motor (133) and a telescopic rod (134), the cleaning head (132) is rotatably arranged on the connecting rod (131) around the axis of the cleaning head, the power motor (133) is fixed on the connecting rod (131) and is used for driving the cleaning head (132) to rotate, so that the lens (122) can be cleaned when the cleaning head (132) is in contact with the lens (122), one end of the connecting rod (131) is hinged to the cover body (121), so that the connecting rod (131) and the wiping head (132) can be inserted into the receiving recess (135) and the power motor (133) is inserted into the motor cavity, the rotation axis of the wiping head (132) is vertical to the rotation axis of the connecting rod (131) relative to the cover body (121), the connecting rod (131) is provided with a sliding groove which extends along the length direction of the connecting rod (131), one end of the telescopic rod (134) is hinged with the inner surface of the motor accommodating part (123), the other end of the telescopic rod (134) is hinged with a sliding block (136), the sliding block (136) is embedded in the sliding groove in a sliding way, the telescopic rod (134) can be telescopic and can drive the connecting rod (131) to rotate, so that the connection rod (131) is received into the receiving groove (135) or protrudes from the receiving groove (135).
2. The power monitoring device with alarm function according to claim 1, characterized in that: wipe head (132) including central body (137) and six at least encircles (138), central body (137) with the output shaft coaxial fixation of power motor (133) and can synchronous rotation, six at least encircles (138) are followed the circumference evenly distributed of central body (137), encircles (138) are the arc, central body (137) with being close to of encircles (138) one side of camera lens (122) is provided with wipes the sponge, the one end of encircles (138) with central body (137) are connected, from being close to the one end of central body (137) is to keeping away from the one end of central body (137), the tangent line of encircles (138) with the distance between the axis of central body (137) increases gradually, the crooked direction of encircles (138) with wipe the direction of rotation of head (132) unanimously.
3. The power monitoring device with alarm function according to claim 2, characterized in that: a convex surface and a concave surface are respectively arranged on two sides of the surrounding body (138), the convex surface is intersected with the concave surface, the distance between the tangent line of the convex surface and the axis of the central body (137) is gradually increased, and the distance between the tangent line of the concave surface and the axis of the central body (137) is gradually increased; the straight line where the tangent line of one end of each convex surface, which is far away from the central body (137), is located is a first straight line, the straight line where the tangent line of one end of each two adjacent surrounding bodies (138), which is far away from the central body (137), is located is a second straight line, the straight line of the water flow sprayed by the spray head (130) is a third straight line, the distance between the first straight line and the axis of the central body (137) is equal to the distance between the third straight line and the axis of the central body (137), the distance between the second line and the axis of the central body (137) being greater than the distance between the third line and the axis of the central body (137), the direction of the water flow sprayed by the spray head (130) is opposite to the rotation direction of the central body (137), so that the water flow sprayed by the same spray head (130) firstly contacts the concave surface of the same surrounding body (138) and then contacts the convex surface.
4. The power monitoring device with alarm function according to claim 3, characterized in that: the support (11) is provided with a base and a stand, the stand is telescopic, so that the height of the camera (12) can be adjusted, and the camera (12) is detachably connected with the support (11).
5. The power monitoring device with alarm function according to claim 4, characterized in that: the power monitoring device further comprises a solar cell panel and a storage battery, wherein the solar cell panel is arranged at the top of the cover body (121), the solar cell panel is used for charging the storage battery, and the storage battery is used for supplying power to the camera (12).
6. The power monitoring device with alarm function according to claim 5, characterized in that: the power monitoring device further comprises a dryer, the dryer is arranged on the body (120), and the dryer is located on the periphery of the lens (122) and faces the opening of the lens (122).
7. The power monitoring device with alarm function according to claim 6, characterized in that: the power monitoring device further comprises a controller and a timer, wherein the controller controls the cleaning mechanism (13) to clean the lens (122) at regular time through the timer.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711430947.6A CN108043799B (en) | 2017-12-26 | 2017-12-26 | Electric power monitoring device with alarm function |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711430947.6A CN108043799B (en) | 2017-12-26 | 2017-12-26 | Electric power monitoring device with alarm function |
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| CN108043799A CN108043799A (en) | 2018-05-18 |
| CN108043799B true CN108043799B (en) | 2021-01-15 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109630828A (en) * | 2018-11-15 | 2019-04-16 | 安徽盛联电力科技有限公司 | A kind of anti-intelligent monitoring and controlling device blocked |
| CN110173154A (en) * | 2019-05-27 | 2019-08-27 | 安徽桔子智能科技有限公司 | A kind of band clears up the Intelligent door lock capable of recognizing face of structure automatically |
| CN110736896A (en) * | 2019-10-25 | 2020-01-31 | 江苏电卫士电力服务有限公司 | electric power alarm system |
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| CN202150160U (en) * | 2011-07-19 | 2012-02-22 | 广州东康物业服务有限公司 | Safety protecting device for key area |
| CN205566520U (en) * | 2016-04-09 | 2016-09-07 | 宋国丰 | Can clear away monitor of dust |
| CN206164689U (en) * | 2016-11-28 | 2017-05-10 | 盐城师范学院 | Camera for security with camera lens cleaning function |
| CN206195917U (en) * | 2016-11-07 | 2017-05-24 | 广州优逸克电子科技有限公司 | But first ambiguity automatic alarm high definition surveillance camera head of inspection mirror |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202150160U (en) * | 2011-07-19 | 2012-02-22 | 广州东康物业服务有限公司 | Safety protecting device for key area |
| CN205566520U (en) * | 2016-04-09 | 2016-09-07 | 宋国丰 | Can clear away monitor of dust |
| CN206195917U (en) * | 2016-11-07 | 2017-05-24 | 广州优逸克电子科技有限公司 | But first ambiguity automatic alarm high definition surveillance camera head of inspection mirror |
| CN206164689U (en) * | 2016-11-28 | 2017-05-10 | 盐城师范学院 | Camera for security with camera lens cleaning function |
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| CN108043799A (en) | 2018-05-18 |
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