portable green laser pointer has a frequency hopping function

 portable  green laser pointer  has a frequency hopping function.
Users only need to wait for three to five minutes after they insert  green laser pointer  into the USB ports of computers.  to adjust the temperature and degree of tight inflation system, electric system through the pressure sensor compact tungsten Expansion , temperature sensors measure the temperature of heating tungsten wire, and the use of stepper motor, electric tungsten compact single chip technology expansion, temperature adjustment. Keywords: EPS Tight bilge degrees regulation Temperature control II1 Introduction 1.1 Overview can be made of polystyrene (EPS) foam with light, sound and heat insulation, seismic, moisture, thermal conductivity.The photoelectric sensor is the nature of light availability and the surface state changes of the object detection sensor. Photoelectric sensor is mainly composed of light-emitting investment highlights and light light-receiving. If the projected light to detect objects of different cover or reflection, to reach the light-receiving amount will change. Control light will detect this change, and converted to electrical signals, and output. Most of the visible light (mainly red, green, blue color) and infrared light to determine.  The ISM band adopted in  green laser pointer  is also widely used in the domain of industry, science and medicine.
 the signal is amplified by 100 times, in by TLC1543A / D converted into electrical signals transmitted to the processor for analysis. Repeatability parameter of the error parameters of Table 3.2 Project +0.02% FS 1/5000 Recommended Operating Voltage 5-12V Zero Balance +1, the FS maximum working voltage of 15V nominal output (+0.1%), the linearity of mv / v 1/3000 creep +0.02% FS/30min 8Figure 3.3 Differential amplification circuit diagram Figure 3.3 sent fraction is amplifier circuit diagram of the S-type load pressure sensor range is 0-50N,  green laser pointer  only need to comply with certain requirements on transmission power. 
 numeric keypad and display module keyboard part a matrix keyboard, display part 1602LCD LCD display. That part of the software programming menu prompts the user interface visualization. Coding keys, press the different buttons call a different 15Functional modules, and then the operation of the entire device 16Software System 4.1 System flowchart of 4.1 flowchart Figure1 Overall flowchart of the 17Processor cutting through the photoelectric sensor detects the location of the wire.  RF used in the production of  green laser pointer  stands for Radio Frequency.
 Early Warning force test data and analysis 19From the photoelectric sensor detects the initial position to the cutting wire, the pressure sensor detects the cutting wire early warning force and the vertical direction of the stepper motor displacement distance line data detection, and obtained a linear relationship in Figure 5.2 are as follows: Figure 5.2 Cutting the wire warning force and displacement curve in Figure Figure 5.2 cutting wire warning force and displacement related diagrams by the Figure can be intuitively seen that the pressure sensor detects the pressure.