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Digah House Company's Insulated Aluminum Roller Shutter Doors&Windows

Digah House Company's Insulated Aluminum Roller Shutter Doors&Windows

2021-09-16
Digah Company
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Insulated Aluminum Roller Shutter Doors&Windows is a good example of efficient production of Guangzhou House Empire Construction&Furnishing Co.,Ltd. We select superior raw materials in a short time which only come from qualified and certified suppliers. Meanwhile, we strictly and quickly conduct testing in every phase without compromising the quality, ensuring that the product will meet the exact requirements.In the competitive market, Digah Company products excel others in sales for years. The customer prefers to purchase high-quality products even though it costs more. Our products have proved to be at the top of the list regarding its stable performance and long-term service life. It can be seen from the high repurchase rate of the product and feedback from the market. It wins many praises, and its manufacturing still complies with higher standards.At Digah Company, all products, including Insulated Aluminum Roller Shutter Doors&Windows can be designed to your specifications. We also provide cost-effective, high quality, dependable and on-time delivery service.
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How to Control Motion Sensor Alarm with Bluetooth
How to Control Motion Sensor Alarm with Bluetooth
Step 1: materials requiredThe materials required for the project are as follows:1(image-1)-Arduino Uno/Duemilanove arduino arduino UnoDF robot or other similar to image LCD protective cover2 (image-2) - LCD shield3 (image-3) - hc-05 Bluetooth module Bluetooth module4 (Figure 4) - PIR motion sensor5 (Fig. 5) - 6-pin button6 (Figure 6) - bread board7 (Figure 7) - jumper, male to male jumper and female to male jumper8 (Figure 8) - light emitting diode (LED)9 (Figure 9) - water pump (other improvements of the project)10-10k resistor11 - container used as project suitcase12 (image10) - pie Zo buzzerThe cost of the project is less than 1200 rupees or $20Step 2: Test LCD shieldJust fix the LCD shield on the Arduino, as shown in the figure, that is, the LCD pin is parallel to the Arduino pin.Now upload the code.Step 3: Test PIR sensorPyroelectric ("passive") infrared sensor: '"what is a PIR sensor?'" PIR sensors allow you to sense motion and are almost always used to detect whether a human has moved into or out of the sensor range. They are small, cheap, low power consumption, easy to use and will not wear. Therefore, they are usually found in appliances and gadgets used in homes or businesses. They are commonly referred to as PIR, "passive infrared", "pyroelectric" or "IR motion" sensors. PIR is basically made of a pyroelectric sensor (you can see a circular metal can above with a rectangular crystal in the center), which can detect the level of infrared radiation. Everything emits some low levels of radiation, and the hotter things are, the more radiation they emit. In fact, the sensor in the motion detector is divided into two parts. The reason for this is that we want to detect motion (change) rather than average IR levels. Connect the two halves so that they offset each other. If half of the infrared radiation is more or less than the infrared radiation on the other side, the output will swing up and down. Next to the pyroelectric sensor is a pile of support circuits, resistors and capacitors. It seems that most small amateur sensors use BISS0001 ("micro power PIR Motion Detector IC"), which is undoubtedly a very cheap chip. The chip receives the output of the sensor and performs some small processing to send digital output pulses from the analog sensor. PIR sensors are great for many basic items or products that need to detect when personnel leave or enter or approach the area. They have low power consumption, low cost, ruggedness, wide lens range and easy interface. Please note that PIR will not tell you how many people are around or how close they are to the sensor. The lens is usually fixed in a certain range and distance (although it can be cut to death somewhere), and sometimes it will be detonated by the house. Pets.camera lensPIR sensors are quite versatile, and most of them differ only in price and sensitivity. Most real magic happens in optics. This is a very good manufacturing idea: PIR sensors and circuits are fixed and cost a few dollars. The lens costs only a few cents and can easily change the width, range and sensing mode. In the above figure, the lens is just a piece of plastic, but this means that the detection area has only two rectangles. Usually, we want a larger detection area. To do this, we use a simple lens (such as the lens found in the camera): they gather large areas (such as scenery) into small areas (on film or CCD sensors). For reasons that will soon be understood, we hope to make the PIR lens small and thin and can be formed with cheap plastic, although it may increase deformation. Therefore, the sensor is actually a Fresnel lens (see figure below). Sure, so now we have a wider range. However, please remember that we actually have two sensors. More importantly, we don't want to have two very large sensing area rectangles, but to disperse multiple small areas. Therefore, what we need to do is to divide the lens into multiple parts, and each part is a Fresnel lens. Different facets and sub lenses create a series of staggered detection areas. This is why the lens centers on the upper facet are "inconsistent" - pointing to the other half of the PIR sensing element.Read PIR sensorUpload code, mentioned below:Step 4: establish a connectionPower input:Internal input: connect to the power input of the Arduino card through batteries (6 batteries, 1.5V each) or 9V batteries.External input: input to 2.1mm through external transformer (9V, 1a) or mini USB input to Arduino card through USB cable.Arduino (top: left to right):GND LED / S (GND), speaker (GND).Digital 13 LED / S (VCC).Number 12 - button (right foot).Digital 11 speaker (VCC).Numbers 10, 9, 8, 7, 6, 5, 4-lcd keyboard guard (D10, D9, D8, D7, D6, D5, D4).Digital 2-pir sensor (out). Digital 1 (TX) - Bluetooth module (RXD).Digital 0 (Rx) - Bluetooth module (TXD).Arduino (bottom: left to right):Reset - LCD keyboard guard (RST).5V Bluetooth module (VCC), PIR sensor (VCC), LCD keyboard cover (5V), button (with 10K resistor between 5V and middle leg)GND Bluetooth module (GND), PIR sensor (GND), LCD keyboard guard (GND), button (left foot).Gnd-9v connector (-). Vin-9v connector (switch between VIN and ).Note-you should use the built-in power pin (usually with USB cable or charger) to power Arduino. To get better results, especially in this project.Step 5: make LED surfaceConnect the LED above the image.Step 6: establish connection with water pumpTo operate the pump, simply install the pipe together with the motor in the inlet and outlet extension pipe, and connect the inlet pipe to the water source containing water.The pump is an improvement of the project, so as soon as the PIR sensor detects movement or intruder, the pump will start to absorb water and inject water into the intruder with turbulent force or flow.Note-you should connect the nozzle to a small cross-section to allow water to flow out of the pump with turbulent force.Step 7: upload codeDownload and run the Arduino software from the link provided below:http://arduino.cc/en/main/software1。 Download the u.ino file that exists on this page (this is your final Arduino code).2。 Download the zip file, stopwatchclass and liquidcrystal display3。 Extract these files into the Library folder in the Arduino software location (as shown).4。 For more information about these libraries, see the following links:http://playground.arduino.cc/Code/StopWatchClasshttp://arduino.cc/en/Reference/LiquidCrystal5。 Select development board: Tools - development board - Arduino UNO.6。 For other boards, see more information about Serial1 connections (to avoid compatibility issues): http://arduino.cc/zh/reference/serialVerify the code and upload it to Arduino.Step 8: receive messages on Android smartphonesDownload the Arduino Bluetooth control application via broxcode from the link below:Arduino Bluetooth control applicationhttps://play.google.com/store/apps/details? id=com 。..。To connect to an Android smartphone:1。 Open the project.2. Turn on the Bluetooth of the mobile phone.3。 Open the application, and then click terminal window.4。 To connect to hc-05, type 1234 or 0000 if a connection password is required.5 open the terminal in the application.6。 Congratulations, you have completed the project.Step 9: organize thingsNow package the project in a container to make it look good.If you want to program Arduino mega, then change all sequences in the code to Serial1.
Ads5485 Sampling Rate 200MSPS 16 Bit Single Channel Analog-to-digital Converter
Ads5485 Sampling Rate 200MSPS 16 Bit Single Channel Analog-to-digital Converter
Ads5485 sampling rate 200MSPS 16 bit single channel analog-to-digital converter (ADC) chipRecently, Texas Instruments (TI) announced the launch of the industry's first 16 bit single channel analog-to-digital converter (ADC) with a sampling rate of 200MSPS, which can achieve the ultrafast speed previously achieved only by low-resolution ADC. The new data converter can bring a higher level of performance to applications such as communication, test and measurement and national defense. The evaluation board (EVM) can not only significantly simplify the design process, but also realize the rapid evaluation of these complex systems (for more details, please visit: ads5484 PDF, ads5484 Datasheet http://focus.TI.com.cn/cn/docs/prod/folders/print/ads5485.html )。Susie Inouye, chief analyst of databeans, pointed out: "Medical treatment, wireless communication and broadband infrastructure all need higher speed and resolution, which promotes the development of high-speed converters. In fact, ADC with sampling rate of 50 MSPs or higher is expected to maintain a growth rate of 17% from 2008 to 2013. Ti has always been committed to introducing converters that can meet the requirements of high speed and high resolution, so that customers can realize such as 4G communication Letter and other new applications. "The ads5485 features high speed, high resolution and ultra-low noise, which can significantly optimize the performance of relevant applications. For example, this ADC can be used for 70 MHz input frequency (if) Achieve 75 dBfs signal-to-noise ratio and 87 DBC spurious free dynamic range. Ads5485 simplifies the analog front-end design by integrating fully differential input buffer. The buffer is developed by TI's bicom3 high-speed process technology, which can provide constant input impedance for input frequency and eliminate the flyback problem of ADC tracking and holding structure, so as to ensure consistent linearity of signal.The performance of ads5485 can improve design flexibility and provide the following system level advantages for communication, test and measurement and defense applications:·It supports 16 bit resolution and 100 MHz bandwidth, which can fully meet the needs of high-speed digital converter, spectrum analyzer, test and measurement equipment and general data acquisition system;·The linearization and efficiency of the transmitting power amplifier are improved, and the digital predistortion algorithm is adopted to reduce the overall system cost;·Support higher bandwidth sampling rate of radar system, which is helpful to improve tracking resolution and object discrimination;·Enable software defined radio equipment to implement more standards, such as WiMAX, LTE and CDMA.Robert sgandurra, senior product manager of Pentek company, pointed out: "Ti continues to improve the performance of high-speed ADC. For our new model 7150 Quad A / D software radio module There is no doubt that ads5485 is the best solution. Higher sampling rate means that users will be able to directly realize the digitization of 100 MHz bandwidth, which will benefit customers who carry out the design of broadband radar and broadband communication system. "Packaging and supplyAds5485 further enriches the product camp of TI's ads548x series high-speed ultra-low noise ADC. The device is packaged in space saving 9mm x 9mm 64 pin QFN.Part number speed (MSPs) resolution (bit) SNR (dBfs) SFDR (DBC) SINAD (DBC)ADS5485 200 16 75 87 73.7ADS5484 170 16 75.5 87 74.3ADS5483 135 16 79 97 77.8ADS5482 105 16 80.5 98 79.3ADS5481 80 16 80.6 98 79.5The values listed are SNR, SFDR and SINAD at 70 MHz if.Tools and signal chain solutionsThe samples of all five ads548x series products have been fully launched. In addition, Ti has launched many tools to simplify the design. For example, ads5485 and cdce72010 low jitter clocks are provided on the same EVM to help quickly evaluate complex systems. Customers can make full use of TI's tsw1200 digital capture tool to quickly evaluate up to 16 bit resolution and 500 MSPs sampling rate ADC. For samples, EVM and tsw1200 capture cards, please visit the website: http://focus.ti.com.cn/cn/docs/prod/folders/print/ads5485.html 。In order to further simplify the design and accelerate the time of putting products on the market, Ti has launched a full set of signal chain, including digital to analog converter, amplifier, clock, RF solution and digital signal processor.
These Smart Home Appliance Safety Knowledge Is Worth Knowing
These Smart Home Appliance Safety Knowledge Is Worth Knowing
With the continuous development of the Internet of things and intelligent terminals, more and more devices are intelligent. In the next few years, more household appliances will enter the intelligent era. Intelligent household appliances based on application technologies such as digitization, three networks integration, Internet of things, big data and cloud computing will be the backbone of information consumption.We will introduce the security of smart appliances from the following aspects:1) Agreement on domestic smart appliances2) Intelligent home appliance network topology3) Security attack and defense of smart appliances4) Security reinforcement of smart appliancesWhat is smart appliances?Smart home appliances are home appliances formed after the introduction of microprocessor, sensor technology and network communication technology into home appliances. They can automatically sense the state of residential space, the state of home appliances and the service state of home appliances, and can automatically control and receive the control instructions of residential users in the house or far away; At the same time, as an integral part of smart home, smart home appliances can interconnect with other home appliances, home appliances and facilities in the house to form a system to realize the function of smart home.Ranking of China's top 10 home appliance brands in 2015Main control methods of intelligent appliances1) LAN is controlled through Wi Fi;Smart TVs with Android operating system generally use Wi Fi for control, and few can be controlled remotely. Smart TV itself needs the ability to connect to the Internet, and Wi Fi control is its best choice. And because there is no need for remote control, the permission is controlled in the LAN.2) Cloud intelligent remote control;The equipment requiring remote control mainly includes cameras, washing machines, rice cookers, etc.3) Control via Bluetooth;The networked device system is relatively complex. Some devices do not need remote control, and there is no need to connect to the Internet. At this time, Bluetooth control is usually selected. Smart light bulb, sound, etc4) ZigBee controlZigBee is translated as "purple bee", which is similar to Bluetooth. It is a new short-range wireless communication technology for sensing and control applications.5) Xiaomi smart socket (ZigBee version) and Xiaomi gateway have joined ZigBee control.
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