This article is a phased achievement of the National Social Science Fund's major project “Marxism and the Trend of Contemporary Social Political Philosophy†(Project No. 12ZD106). Expressed as abstract idealism, or as the same abstract empiricism. Therefore, this thesis attempts to
8535 and L298 drives constitute a DC motor PWM speed controller. The working principle of the speed control system, the interface circuit of the photoelectric encoder, the PWM drive interface circuit and the corresponding control software design are introduced in detail. designed. Two encoder sig
1. The voltage of the monitoring camera wire should be greater than the working voltage of the line; the insulation of the wire should be in line with the installation method of the line and the environmental conditions for laying. The cross-sectional area of ​​the conductor should me
The modern anti-theft alarm system should be combined with different detection technologies (such as: biological temperature, thermal conductivity, electronic motor, imaging technology, etc.) to prevent intrusion. In the detection method, there are infrared, sonic, microwave, magnetic contact and i
First of all, a clean usage environment is very important. When the projector is working, the bulb generates a lot of heat and the temperature is very high. The high temperature is the most direct killer of projector lamp life. In order to increase the lamp life and avoid high temperature burns ins
Almost every house needs to install an anti-theft door. When choosing, everyone generally chooses an aluminum alloy anti-theft door. So what are the tips for identifying an anti-theft door? I think you will definitely need to know! 1. The seller must have the "test certificate" issued by
According to a media report, installing a camera is a common and effective method of anti-theft. However, it is common to install a camera in public places, and it is rare to install a camera outside your own house. Tenants in a villa group in Zhengzhou, Henan have installed cameras in front of and
The types of tiles are dazzling and colorful. I believe that the majority of owners are not very familiar with the characteristics and scope of various tiles. Today ’s editors share the classification of tiles to help you be more handy when buying. 1. Whole brick: The surface of the whole
There is a difference between traditional furniture and modern homes. Traditional furniture is historic. China's furniture was formed relatively early, and China's furniture civilization is the civilization of life, so Chinese furniture has a certain development in the prevalent period. Ch
The rise of real estate has driven the renovation of new houses. More and more families pay attention to the decoration of the house. The choice of furniture is The key to the decoration is that the previous furniture was mainly formaldehyde exceeding the standard. Now almost all furniture contai
At present, all kinds of furniture inspection and certification in the market are endless, and the "most dazzling environmental protection wind" has been blown on the domestic furniture market. "But as far as I know, the credibility of the furniture environmental certification marks