Adaptive pir circuit applied to solar lighting device

A lighting device, self-adaptive technology, applied in the direction of lighting device, lamp circuit layout, electric light source, etc., can solve the problems of complex and cumbersome circuits, difficult waterproof design, poor anti-interference, etc.

Inactive Publication Date: 2019-03-22
HUBEI UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The technical problem solved by the present invention: in order to solve the problems such as the detection distance of the PIR circuit in the solar lighting device is not high, the anti-interference is poor, the waterproof design is difficult, and the circuit is complex and cumbersome, and then promote the healthy development of the solar lighting device, the present invention is On the basis of the two technical routes, it has been improved and perfected, and a solar lighting device scheme based on adaptive control digital PIR technology is proposed.

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  • Adaptive pir circuit applied to solar lighting device
  • Adaptive pir circuit applied to solar lighting device
  • Adaptive pir circuit applied to solar lighting device

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Embodiment Construction

[0022] attached Figure 4 It is a hardware circuit schematic diagram of an embodiment of the present invention. The pyroelectric infrared sensor (1) selects RE03B, a dual-element general-purpose sensor. The output signal pin S of the pyroelectric infrared sensor (1) is connected to one end of the resistors R5 and R9, the other end of the resistor R9 is connected to the power ground, and the other end of the resistor R5 is connected to the non-inverting input end of the operational amplifier (16). The operational amplifiers (16), (17) select the general dual operational amplifier chip LM358 for use. The inverting input terminal of the operational amplifier (16) is connected to resistors R8, R13 and one end of capacitor C13, the other end of resistor R13 is connected to the positive pole of capacitor C20, the negative pole of capacitor C20 is connected to the power ground, and the other end of resistor R8 is connected to the capacitor The other end of C13 is connected and conn...

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Abstract

To solve problems of short detection distance, poor anti-interference, difficult waterproof design, and complicated circuit of a PIR (Pyroelectric Infrared Radial Sensor) circuit in a solar illumination device, a scheme of a digital PIR circuit based on adaptive control and applied to the solar illumination device is proposed. According to the scheme, the thought of adaptive control is employed, advantages of time-domain analysis and frequency-domain analysis of PIR signal processing are effectively combined, the response rapidness is achieved, the detection distance and the anti-interference of the PIR circuit in the solar illumination device are effectively increased, the difficulty of the waterproof design of the solar illumination device is reduced, and the convenience of parameter setting is improved. According to the scheme of the circuit, the circuit is simple, the cost is low, and the cost performance is high.

Description

technical field [0001] The invention relates to a PIR ((Pyroelectric Infrared RadialSensor, pyroelectric infrared sensor)) circuit for a solar lighting device. Background technique [0002] Solar lighting device is a general term, including solar street lights, solar flood lights, solar garden lights and many other off-grid solar photovoltaic systems. Solar lighting device is a green and environment-friendly product for outdoor lighting, and it is also a photovoltaic product with great development potential that can be widely accepted by the market without relying on government subsidies. However, solar lighting devices also face two key issues that restrict their development: 1. Solar lighting devices are a one-time investment, and there is no electricity fee for subsequent use, so the initial investment is relatively large; 2. The energy storage battery life of solar lighting devices is relatively short. Short, is the bottleneck of the life of the entire photovoltaic syst...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H05B37/02
CPCH05B47/105Y02B20/40
Inventor 王超吴铁洲谢红刚
Owner HUBEI UNIV OF TECH
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