CN104918374A - A dimming device for an image signal LED lamp - Google Patents

Abstract

The dimming device of the image signal LED lamp comprises the LED lamp and an LED power supply, and further comprises an image control signal output by a DSP or an ARM, wherein the LED lamp and the LED power supply form a loop, a resistor connected with the LED lamp in series is further arranged in the loop, and the image control signal is connected with the resistor. The image control signal is connected in parallel with the resistor through the triode. The image control signal is connected in parallel with the resistor through the unidirectional silicon controlled rectifier. The image control signal is connected with the resistor in parallel through the MOS tube. The image control signal is connected in parallel with the resistor through the solid-state relay. The image control signal is connected with the camera, and a peripheral interface which is in data communication with Wi-Fi, 3G or 4G is arranged on the processing module of the DSP or the ARM. The invention has the characteristics of simple and reasonable structure, flexible operation and low energy consumption.

Description

A dimming device for an image signal LED lamp

technical field

The invention relates to an LED lamp, in particular to a dimming device for an image signal LED lamp.

Background technique

After 9 o'clock in the evening in small cities in my country, and after 12 o'clock in the middle of the night in large and medium-sized cities, the roads are almost empty. The situation, that is to say, there are fewer pedestrians or vehicles on the road at this time. However, even in this low traffic flow, LED lighting in public places maintains the brightness of the original lighting, instead of adjusting the brightness of the lighting on demand, wasting power in vain. Existing infrared induction, Doppler induction (radar induction) detection distance is short, is not suitable for the public place LED lamp that requires long detection distance and identification static human body.

Chinese patent document number CN 204127795 U disclosed an adjustable spectrum light source for color image acquisition on January 28, 2015, which is characterized in that: the multi-spectral lighting unit is composed of 7 LED light-emitting diodes in different wavelength ranges in parallel to form a complete The spectrum light-emitting unit, in which 7 LED light-emitting diodes use LEDs of different wavelengths, each LED light-emitting diode is connected to 7 amplifier drivers, and then connected to the DSP processing module, which is connected to the spectrum acquisition feedback unit circuit, and the spectrum synthesis control The drive unit circuit includes LED interface, amplifier driver, DSP processing module, spectrum acquisition feedback unit interface, computer USB interface, and power supply; a set of light sources can realize a variety of different spectral characteristics, and is suitable for all lighting requirements. object.

Contents of the invention

The object of the present invention is to provide a dimming device for image signal LED lamps with simple and reasonable structure, flexible operation and low energy consumption, so as to overcome the shortcomings in the prior art.

A dimming device for an image signal LED lamp designed for this purpose, including an LED lamp and an LED power supply, is characterized in that it also includes an image control signal output by DSP or ARM, and the LED lamp and the LED power supply form a loop, and the loop also includes A resistor connected in series with the LED lamp is provided, and an image control signal is connected to the resistor.

Further, the image control signal is connected in parallel with a resistor through a triode.

Further, the image control signal is connected in parallel with a resistor through a one-way thyristor.

Further, the image control signal is connected in parallel with a resistor through a MOS transistor.

Further, the image control signal is connected in parallel with a resistor through a relay.

Further, the relay includes a solid state relay.

Further, the image control signal is connected to the camera, and the processing module of DSP or ARM is provided with a peripheral interface for data communication with Wi-Fi, 3G or 4G; and/or, the processing module of DSP or ARM is provided with The interface connected with the power carrier communication transmission device.

Further, the dimming device of the image signal LED lamp further includes another LED lamp, which forms another circuit with the LED power supply.

The LED lamp and the LED power supply in the present invention form a loop, and a resistor connected in series with the LED lamp is also arranged in the loop, and the image control signal is connected to the resistor; that is, a resistor is inserted in the lighting loop of the LED lamp, and the The resistor reduces the current flowing through the LED lamp, reduces the brightness of the LED lamp, and controls the short circuit of the resistor through the image control signal, so as to achieve the purpose of increasing the brightness of the LED.

The image control signal in the present invention is connected in parallel with the resistance through a triode, a one-way thyristor, a MOS tube or a solid state relay, which has greater selectivity and flexibility.

The image signal collected by the camera in the present invention uses the peripheral interface on the DSP/ARM processing module to complete the data communication between the DSP/ARM processing module and Wifi/3G/4G, realizing the function of human-computer interaction and remote monitoring.

The present invention realizes high-brightness and low-brightness lighting through the control signal of the image control signal, thereby realizing on-demand lighting. Therefore, when no one is in the detection area or objects are moving, only basic lighting is provided, and when people or objects are moving in the detection area , providing sufficient lighting, it has the characteristics of simple and reasonable structure, flexible operation and low energy consumption.

Description of drawings

FIG. 1 is a schematic diagram of the circuit connection of the first embodiment of the present invention.

FIG. 2 is a schematic diagram of the circuit connection of the second embodiment of the present invention.

FIG. 3 is a schematic diagram of the circuit connection of the third embodiment of the present invention.

FIG. 4 is a schematic diagram of the circuit connection of the fourth embodiment of the present invention.

FIG. 5 is a schematic diagram of the circuit connection of the fifth embodiment of the present invention.

FIG. 6 is a schematic diagram of the circuit connection of the sixth embodiment of the present invention.

Detailed ways

The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

Referring to Fig. 1-Fig. 6, the dimming device of the image signal LED lamp includes the LED lamp and the LED power supply, and also includes the image control signal output by DSP or ARM. The LED lamp and the LED power supply form a loop, and the loop is also provided with The resistor connected in series with the LED light, the image control signal is connected to the resistor.

In this embodiment, the image control signal is connected in parallel with a resistor through a triode, as shown in Fig. 1-Fig. 2; the image control signal is connected in parallel with a resistor through a one-way thyristor, as shown in Fig. 3; The tube is connected in parallel with the resistor, as shown in Figure 4 and Figure 6, and the image control signal is connected in parallel with the resistor through a solid state relay, as shown in Figure 5. Of course, it is also possible to connect the image control signal through other common relays and resistors in parallel.

The image control signal is connected with the camera, and the DSP or ARM processing module is provided with a peripheral interface for data communication with Wi-Fi, 3G or 4G; and/or, the DSP or ARM processing module is provided with a power The interface where the carrier communication transmission device is connected. As for the power carrier communication transmission device, which belongs to the prior art, it is described in detail in Chinese Patent Document No. CN 102594411 A. In this embodiment, the signal received by the camera is transmitted to the processing module of DSP or ARM, converted into an analog or digital signal and added with an address code, and then converted into a data packet, which is transmitted to the The total control center, so that the area where the camera is located can be monitored.

Further, the dimming device of the image signal LED lamp further includes another LED lamp, which forms another circuit with the LED power supply. The other LED lamp can be used as brightness reinforcement.

Wherein, the first LED lamp can be one lamp or a group of lamps, and the same is true for the second LED lamp.

The basic principles and main features of the present invention and the advantages of the present invention have been shown and described above. Those skilled in the industry should understand that the present invention is not limited by the above-mentioned embodiments. What are described in the above-mentioned embodiments and the description only illustrate the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention will also have Variations and improvements are possible, which fall within the scope of the claimed invention. The protection scope of the present invention is defined by the appended claims and their equivalents.

Claims (8)

1. the light modulating device of a picture signal LED, comprise LED and LED power, it is characterized in that also comprising the graphics control signals exported by DSP or ARM, LED and LED power form loop, also be provided with the resistance be connected in series with LED in this loop, graphics control signals connects with resistance.

2. the light modulating device of picture signal LED according to claim 1, is characterized in that described graphics control signals is in parallel with a resistor by triode.

3. the light modulating device of picture signal LED according to claim 1, is characterized in that described graphics control signals is in parallel with a resistor by one-way SCR.

4. the light modulating device of picture signal LED according to claim 1, is characterized in that described graphics control signals is in parallel with a resistor by metal-oxide-semiconductor.

5. the light modulating device of picture signal LED according to claim 1, is characterized in that described graphics control signals is in parallel with a resistor by relay.

6. the light modulating device of picture signal LED according to claim 5, is characterized in that described relay comprises solid-state relay.

7. the light modulating device of picture signal LED according to claim 1, is characterized in that described graphics control signals connects with camera, the processing module of DSP or ARM is provided with the Peripheral Interface carrying out data communication with Wi-Fi, 3G or 4G; And/or, the processing module of DSP or ARM is provided with the interface connected with transmission device for power line carrier communication.

8., according to the light modulating device of the arbitrary described picture signal LED of claim 1 to 7, it is characterized in that also comprising another LED, this another LED and LED power form another loop.