基于正六边形DGS单元的微带低通
本文采用正六边形缺陷地面结构单元设计了一款新颖的微带低通滤波器, 并提出了该滤波器的原型RLC等效电路。通过对其S参数的仿真分析提取出了相应的等效电路元件值。
灯光控制系统电路,ht Control System
It is easy to install a couple of infrared emitter and receiver at the entrance of your room and maybe you connect them to the light, but you cannot control the light in this way! You will never know how many person inside and if the room is emp塑封电感器ty or not. In this system, every thing is under control, because it is smart enough to know how many persons inside; and it can identify the direction of them, so the light will be turned OFF when the room is unoccupied; and ON otherwise! This tutorial will show you how.
Theorem of Operation:
As shown in Figure 1, Light Control System has five units:
1- Power supply to convert 240V AC into 5V DC.
2- Sensing units that convert body motion into analogue electrical signals.
3- Analogue comparator to convert analogue signals into digital signals.
4- Microcontroller to process these digital signals and send the appropriate command to the room light.
5- Relay to act as an interface between low voltage (control system and sensors) & high voltage (room light).
Sensing unit consists of infrared emitter OP295 to produce the infrared beam, & two detectors in front of the emitter to detect the infrared beam OP598. Since the main idea in this device is to know person direction; and so, to get this approach, we have to use tow pieces of infrared detector in 一体电感order to
| A Detectror | B Detector | |
1 | High | High |
电容器和电感器2 | Low | High |
3 | 工字电感器Low | Low |
4 | High | Low |
5 | High | High |
| Tip: |
| If you have a camcorder, or just a camera mobile phone, you can see the infrared light! Just point the infrared emitter at the camera then you will be able to see the infrared light in the viewfinder. If you point your remote at the camera and push a button, you will see flashing light!绕行电感 |