ultrasonic rangefinder

familiar with most of the traditional fire equipment, traditional fire equipment or mainly rely on human operation, in real-time can not meet the requirements, and sensor network is precisely to compensate for this defect, in the event of The special sensor can quickly detect the smoke concentration and temperature parameters of the environment, when the threshold is reached, it will control the fire fighting facilities, and inform the personnel in the area to have sufficient time to evacuate t

emission. The surface acoustic wave performance is stable, easy to analyze, and in the shear wave transmission process has very sharp frequency characteristics, in recent years in nondestructive testing, imaging and the direction of the application of the development of a rapid, surface acoustic wave-related theoretical research, semiconductor materials, acoustic guidance materials, detection technology and other technologies have been quite mature. The touchscreen part of the surface acoustic

register. Therefore, the timer can capture the time when an external event occurs. 　　Note: before the timer uses an I/O pin, the required I/O PIN must be configured as a timer 3/Timer 4 peripheral pin.The channel input pin is synchronized with the internal system clock. Therefore, the minimum duration of pulses on the input pins must be greater than the system clock cycle. The contents of the 8-bit capture register for channel n is read from the register T3CCN/T4CCN. When a capture occurs, the

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which there is preservatives, urine is not easy to spoil, unconditional, can be used any jar, but need to wash, and boil sterilization or rinse with boiling water. Collect morning urine about 10 ml, quickly send hospital tests, such as time delay too long, can affect the correctness of the test, especially in summer, more attention should be paid to this point.(4) B-type Ultrasonic examinationDiagnosis of early pregnancy with B-ultrasound is the most

boiling water. Collect morning urine about 10 ml, quickly send hospital tests, such as time delay too long, can affect the correctness of the test, especially in summer, more attention should be paid to this point.(4) B-type Ultrasonic examinationDiagnosis of early pregnancy with B-ultrasound is the most correct and reliable method. The earliest in the 5th week of pregnancy, also is menstruation expires a week, on the B-type

Hello everyone, I'm a small-story.Remember the previous section click the Open linkToday we talk about sensors.Today, we talk about light and ultrasound.Send a picture first:The light sense has three interfaces, namely:UCC, out, GND.The ultrasound has four interfaces, namely:UCC, T, E, GND.Here's how it works.The ultrasonic wave is an ultrasonic wave, the sound wave touches the object bounces, the other end

can be visible images or invisible spectral images (such as X-ray images, ray images, ultrasonic images, or infrared images ). From the perspective of the objective object scale reflected by the image, it can be as small as electron microscope images, as large as aerial photos, remote sensing images, and even astronomical telescope images. After these images from different information sources are transformed into digital encoding formats, they are al

hesitant about funding. I have purchased low-cost domestic equipment, and the testing results are often unsatisfactory. 2. Drone endurance. As we all know, the biggest reason why battery cannot replace fossil fuel in motor vehicles for a long time is that battery consumes fast power and is slowly charged. Green, but cannot guarantee the endurance. Solar panels are a good choice, and I am also in the Solar System, which is just a chance for us to study. However, if you consider a series of probl

short due to mechanical wear, as a result, the intensity of hitting is reduced, and the print is also unclear. In the case of congestion, You can soak the print head in anhydrous alcohol and clean it with an ultrasonic cleaning machine. In the case of needle wear, you can properly adjust the distance between the print head and the paper, if the fault is not significantly improved, the print head can only be replaced. Of course, the tape is used with

respond to the needs of business units, so that enterprise applications can get rid of the limitations of technology-oriented solutions. SOA can use bats as a metaphor. To capture food with their own ultrasonic waves, Bats also need ultrasonic waves to avoid obstacles. enterprises also want to make profits by using software, we also hope that software can avoid enterprise risks. SOA requires developers t