The defect that can`t be overcome exists in some special occasions in some traditional distance measuring ways. For example, the measurement of liquid level is a kind of range measurement, the traditional electrode law is to adopt the location of difference and is distributed the electrode, measure the liquid level by for the electricity or pulsin
Click here to download the full size of the above Circuit.
g, the electrode is soaked in underwater or other liquid for a long time, it is extremely easy to be corroded, electrolyzed, lose the sensibility. Can solve these problems while utilizing the ultrasonic measurement distance. The ultrasonic ranger that this text designs uses three kinds of range finding mode selection jumper wires J1 short-range, middle distance, but regulating distance. Its whole scheme will be in order to produce the echo signal when push and measure the key, the probe sends supersonic wave, as supersonic wave meets obstacles; The system sends the back wave signal amplification that the probe receives into the control device; The measurement circuit of temperature measures the temperature, through calculating the distance examined, reveal on the nixie display, the distance of display of the last 4, the top 2 reveals the temperature. Utilize the principle such as Fig. 1 of the ultrasonic measurement distance to show and show, describe as briefly: The supersonic wave sent regularly is reflected while encountering obstacles, the backward wave receives and turns into the electric signal via the receiver, so only examine the mistiming of setting out and giving and receiving T, then according to formula 1 Can find the distance: In the type: C is a propagation velocity of the supersonic wave in the air, C is 331 m/s at 0, C is 347 m/s at 25, it and ambient temperature T unit: Relation such as formula 2 :...
This project fits more for custom made battery casing that can have more space to hide things inside. This switch with few alterations can be used for any other project as well but is designed based on e-bike needs! This project use a clever functionality of....
The circuit described here uses ultrasonic oscillations and operates based on the propagation velocity of these oscillations in the air. Thus, we can easily determine the distance of two points if the time within which the wave travels this distance is....
Sometimes the precious metals are hidden too deep and are not detected except with complicated devices. In many cases, however, small pieces of precious metal buried near the surface can be detected by relatively simple means. Everyone is very attractive to....
Many times for various reasons we forget or can not water the plants that we have in our homes. And many humidity sensors units just notify us with a beeping sound or with a flashing light, that the pot needs watering. But what if we are away from home? This....
The principle behind a metal detector is really very simple. Proof of this is the circuit that follows, in which it proves that the construction of a metal detector can be done in the minute, with few components that we find very easily everywhere. With the....
The sub-harmonic bass generator is a sound producing unit for guitars. The sound it produces looks very much like that of the bass guitar. The octave generator is sometimes quite unusual since it does not produce any of the usual ways of coloring the sound,....
In the past the sounding (sea bottom measurement) was done with the "bullet", that is, with a heavy lead object that the seamen plucked into the sea hung from a calibrated rope. As soon as the "bullet" reached the bottom, the depth appeared directly from the....
This Amplifier was designed to have the following specifications: Distortion less than 0.1% at full power of 100W even at 20KHz. Power has to be attributed to an extended bandwidth. The output transistors must be protected against short circuits. The power....
A series of LEDs serve to alert the gardener when plants need water. Using two conventional digital integrated LEDs and a series of LEDs, we make a very useful device for gardening. The device detects the amount of water in the pot and alerts the grower.....
characters left: