CN201657126U - Energy-saving monitoring video camera - Google Patents

Abstract

The utility model relates to an energy-saving monitoring video camera, comprising a main body, an aluminium-based lamp panel arranged at the head of the main body and a control circuit board arranged in the main body, a camera mounted on the main body is arranged at the central section of the aluminium-based lamp panel, a plurality of spotlight cups fixed on the aluminium-based lamp panel are arranged uniformly around the camera, a visible light LED lamp fixed on the aluminium-based lamp panel is arranged in each spotlight cup, the visible light LED lamp and the camera are respectively connected with a control circuit board, the control circuit board mainly comprises 51 series single chip microcomputers, a holder decoder, a temperature sensor, a light intensity sensor, a sound sensor, a passive infrared sensor, an A/D converter, a monitoring server and a constant current drive circuit. The utility model has the beneficial effect that the image is clearer and more delicate, and has higher resolving power, the color is more lifelike, the monitoring range is wider, the service life is longer and the energy efficient is higher.

Description

An energy-saving surveillance camera

technical field

The utility model relates to the field of night vision security monitoring, in particular to an energy-saving monitoring camera.

Background technique

At present, night vision technology in monitoring is mainly focused on infrared night vision surveillance cameras. Infrared surveillance cameras generally refer to near-infrared cameras, which are infrared night vision cameras with a wavelength of 850um. In recent years, people are also exploring visible light cameras, laser cameras, and far-infrared cameras. These technologies have certain problems, as follows:

1) Thoroughly avoid the problem of focus shift - make the images clear during the day and at night. Due to the different wavelengths of visible light and infrared light, the imaging focus is not on the same plane, resulting in clear images under visible light conditions during the day, but blurred under infrared light conditions at night ; Or the image is blurred under visible light conditions during the day, and the image is clear under infrared light conditions at night.

2) The problem of color reproduction

In order to avoid the influence of stray light waves when color cameras are imaging during the day, filters should be used to filter out clutter such as infrared light and ultraviolet light. But at night, when the visible light intensity is very low, surveillance cameras often use infrared lights to supplement light, but because infrared light does not have a corresponding visible spectrum, the color reproduction is poor, so color images cannot be displayed, which is why infrared cameras are used at night. The root cause of black and white images.

3) Light attenuation problem of infrared night vision camera

As we all know, one of the biggest problems of infrared cameras is its light decay, and the main reason for light decay is the heat dissipation of infrared lamps. The main reasons for the heat generation of infrared lamps are: first, the infrared lamp board generally uses resin PCB board, The infrared lamp beads are welded and inserted on the PCB board and sealed in the camera housing; second, the infrared light itself is a light with a thermal effect, so it is easy to generate heat; third, the heat dissipation process is unreasonable, resulting in the temperature of the infrared lamp being too high, resulting in LED light decays rapidly.

4) Light pollution problem of infrared light

Infrared light: The light other than red light, which is invisible to the naked eye and has a thermal effect, is called infrared light. It is a light segment with a wavelength longer than visible light and invisible to the naked eye. Infrared rays are one of the many invisible rays in the sun's rays. The light wavelength of an infrared camera is 850nm, and the retina is very sensitive to near-infrared rays (760-1400nm), so it is easy to cause denaturation of human eye proteins and other macromolecules.

In addition, the influence of infrared rays on the skin mainly causes microvascular expansion and pigmentation. When the infrared rays cause the skin temperature to rise to 45°C, it will reach the skin pain threshold.

5) Customizable irradiation distance - you can choose the light effect

Ruishitong energy-saving cameras all use visible light sources to supplement the lighting environment, and can be equipped with appropriate spotlight cups according to needs, and then equipped with light sources of appropriate intensity according to appropriate needs, so that the light can reach the distance required by customers.

6) Energy-saving light source - the problem of irradiation angle

Ruishitong environmental protection and energy-saving cameras determine which lamp cup to use according to the needs of customers and the equipped lens, and use the reflection principle of the light source to effectively use all light sources and try not to waste them. It solves the problem that the infrared lamp beads of the infrared camera scatter light around and seriously waste light.

7) Most of the current night vision cameras are wasting energy

a. Energy waste caused by low photoelectric conversion efficiency

Photoelectric conversion efficiency refers to the conversion efficiency of electrical energy into light energy. This conversion efficiency mainly depends on the power supply circuit for LED power supply and the luminous flux of the LED itself. At present, the photoelectric conversion efficiency of infrared LEDs on the market is very low, and the LED The current increases with the temperature of the LED, and the electronic device generates a lot of heat. In addition, the luminous flux of infrared lamps is 30-40lm/W, which is equivalent to that of ordinary fluorescent lamps. Therefore, in the process of converting electrical energy into light energy, a large amount of energy is converted into heat energy.

b. Energy waste caused by light source scattering

16mm lens, the irradiation angle is less than 40 degrees, while the infrared light irradiation angle of ordinary infrared cameras is more than 100 degrees, which shows that 2/3 of the light energy of these cameras is wasted, and what is more sad is that these are wasted Lost light sources cause light pollution.

c. Energy waste and image problems caused by non-dimmable

At present, conventional infrared dome cameras have this problem, that is, when the dome camera illuminates the nearby scenery, because the infrared light is too strong, the area illuminated by the camera is generally bright white light, and nothing else can be seen clearly. This situation is actually a waste of energy, and while wasting energy, it also damages the imaging quality of the image.

d. Energy waste caused by non-reusable light sources

Using infrared light as a surveillance camera, the image emitted by this device at night is invisible light (however, the 850nM surveillance infrared camera), therefore, in many places, the combination of light and infrared light is used for monitoring while lighting, and it must be turned on to complete the task.

Utility model content

The purpose of this utility model is to provide an energy-saving monitoring camera, which overcomes the shortcomings of common infrared night vision monitoring equipment, and has the advantages of clear image, wide monitoring range, long service life, more energy saving, and more comfortable use.

The purpose of this utility model is to realize through the following technical solutions:

An energy-saving monitoring camera, comprising a main body, an aluminum-based lamp board arranged on the head of the main body and a control circuit board arranged inside the main body, a camera installed on the main body is arranged in the middle of the aluminum-based lamp board, and the surrounding A plurality of spotlight cups fixed on the aluminum-based lamp board are evenly arranged, and visible light LED lamps fixed on the aluminum-based lamp board are respectively arranged in each of the spotlight cups.

The visible light LED lamp and the camera are respectively connected to the control circuit board.

The control circuit board mainly includes a 51 series single-chip microcomputer, a pan-tilt decoder, a temperature sensor, a light intensity sensor, a sound sensor, a passive infrared sensor, an A/D converter, a monitoring server and a constant current drive circuit, and the 51 series single-chip microcomputer Input and connect the temperature sensor, the light intensity sensor, the sound sensor, the passive infrared sensor respectively, and an A/D converter is arranged between the light intensity sensor, the sound sensor, the passive infrared sensor and the 51 series single-chip microcomputer, and the 51 series The input of the single-chip microcomputer is also connected to the pan-tilt decoder and the monitoring server; the output of the 51 series single-chip microcomputer is connected to a constant current drive circuit, and the constant current drive circuit is connected to a visible light LED lamp.

The beneficial effects of the energy-saving monitoring camera described in the utility model are: the image is clearer, more delicate, the resolution is higher, the color is more realistic, and the problem of focus shift is avoided. Situation; Customizable irradiation distance, irradiation angle, wider monitoring range, visible LED lamp service life increased to more than 50,000 hours, greatly extending the service life of the camera; photoelectric conversion efficiency reached more than 91%, compared with conventional infrared cameras Energy saving 60%-80%. It saves 90% electricity than incandescent lamps; when the user needs to work in front of the surveillance camera, the camera can be turned on to replace the lighting; and after the job is completed, the intensity of the light can be lowered. Let the monitoring not only complete the monitoring function but also complete the application of lighting, reduce light pollution, improve people's comfort, humanized design, let the camera approach the office and living space.

Description of drawings

Fig. 1 is a schematic structural diagram of an energy-saving monitoring camera according to an embodiment of the present invention;

Fig. 2 is a schematic diagram of the energy-saving surveillance camera described in the embodiment of the present invention.

In the figure: 1. Main body; 2. Aluminum base lamp board; 3. Spotlight cup; 4. Visible light LED lamp; 5. Camera; 6. Control circuit board.

Detailed ways

As shown in Figure 1, the energy-saving monitoring camera described in the embodiment of the present utility model includes a main body 1, an aluminum-based lamp board 2 arranged on the head of the main body 1, and a control circuit board 6 arranged inside the main body 1. The middle part of the base lamp board 2 is provided with a camera 5 installed on the main body 1, through which the images within the range illuminated by the camera 5 can be monitored, and a number of spotlight cups 3 fixed on the aluminum base lamp board 2 are uniformly arranged around the camera 5 , the light is collected and condensed through the spotlight cup 3, so that the irradiation angle of the light matches the irradiation angle of the lens, so that energy can be saved while providing image quality. Each of the spotlight cups 3 is respectively equipped with The visible light LED lamp 4 fixed on the aluminum-based lamp board 2, the visible light LED lamp is used as the light source of the supplementary light system, and a high-quality IC is used to make a constant current power supply driving circuit, so that the power supply current of the power supply to the LED is constant and does not change. The current intensity will increase with the temperature change of the LED, which is well guaranteed in terms of photoelectric conversion efficiency. At the same time, the use of LED tubes with high luminous flux can improve the photoelectric conversion efficiency of the camera through the solutions in these two directions; The aluminum-based light board 2 is used as the light board, combined with a special heat dissipation process, which completely solves the problem of LED light decay and improves the life of the LED light, so that the life of the LED camera can be extended to more than 50,000 hours.

The visible light LED lamp 4 and the camera 5 are respectively connected to the control circuit board 6 .

As shown in Figure 2, the control circuit board 6 mainly includes a 51 series single-chip microcomputer, a pan-tilt decoder, a temperature sensor, a light intensity sensor, a sound sensor, a passive infrared sensor, an A/D converter, a monitoring server and a constant current drive circuit, The 51 series single-chip microcomputers input and connect temperature sensor, light intensity sensor, sound sensor, passive infrared sensor respectively, and an A/D converter is arranged between the light intensity sensor, sound sensor, passive infrared sensor and the 51 series single-chip microcomputers , through the A/D converter, the analog signal collected by the light sensor, the sound sensor, and the passive infrared sensor can be converted into a digital signal and then transmitted to the 51 series single-chip microcomputer; the 51 series single-chip microcomputer is also input and connected to the PTZ decoder and monitoring The server, 51 series single-chip microcomputer accepts the operation instructions sent by the pan-tilt decoder, and judges the dimming mode according to the instructions, and completes the dimming control, so that the light intensity of the supplementary light system can be enhanced when the camera illuminates the distant scenery, while in the The light intensity can be reduced when irradiating nearby, so that a high degree of energy-saving effect can be achieved while the image can be seen clearly; the output of the 51 series single-chip microcomputer is connected to a constant current drive circuit, and the constant current drive circuit is connected to a visible light LED lamp 4.

The light intensity sensor: used to automatically sense the intensity of external light, and transmit the sensing information to the microprocessor, and the microprocessor automatically adjusts the light intensity according to the information.

The sound sensor: for humanization and energy saving, this energy-saving camera can sense external sound, when there is sound, the light will be enhanced and the optimized image will be displayed, and it will automatically return to the lowest energy consumption state after a delay for a period of time. (The sensor is optional according to need)

The passive infrared sensor: automatically detects whether someone is approaching, when it detects that someone is approaching, the light is enhanced and the optimized image is displayed, and it automatically returns to the lowest energy consumption state after a delay for a period of time. (The sensor is optional according to need)

The 51 series single-chip microcomputer can also receive the digital signal sent by the remote computer, and after decoding, automatically command the constant current drive circuit module to supply power to the LED light-emitting device according to the instruction, and obtain the external light intensity through the linear light intensity acquisition IC, after analysis A linear dimming command is issued to the LED constant current light source, and the LED realizes the intensity adjustment of the LED light under the condition that the color temperature remains unchanged according to the dimming command. This saves energy even further.

The temperature sensor: senses the temperature around the LED light-emitting device, so as to reduce the influence of temperature on the constant current circuit and the LED light-emitting device.

The above-mentioned embodiments are only one of the preferred specific implementation modes of the present utility model, and the usual changes and replacements made by those skilled in the art should be included in the protection scope of the present utility model.

Claims (3)

1. energy-saving monitoring video camera, it is characterized in that: comprise main body and be arranged on the aluminium base lamp plate of body head and be arranged on the control circuit board of body interior, described aluminium base lamp plate middle part is provided with the camera that is installed on the main body, evenly be provided with the optically focused Lamp cup of plurality of fixed on aluminium base lamp plate around the described camera, be respectively equipped with the visible light LED lamp that is fixed on the aluminium base lamp plate in described each optically focused Lamp cup; Described visible light LED lamp and camera are connected respectively to control circuit board.

2. energy-saving monitoring video camera according to claim 1, it is characterized in that: described control circuit board mainly comprises 51 series monolithics, The Cloud Terrace decoder, temperature sensor, light intensity sensor, sound transducer, feeling of passivity infrared sensor, A/D converter, monitoring server and constant-current drive circuit, import connection temperature sensor, light intensity sensor, sound transducer, feeling of passivity infrared sensor on described 51 series monolithics respectively, also import connection The Cloud Terrace decoder and monitoring server on described 51 series monolithics; Output connects constant-current drive circuit on described 51 series monolithics, connects visible light LED lamp on the constant-current drive circuit.

3. energy-saving monitoring video camera according to claim 2 is characterized in that: be provided with A/D converter between described light intensity sensor, sound transducer, feeling of passivity infrared sensor and 51 series monolithics.

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