When the security system installation and construction is basically completed, many projects will generate multiple lines of ripples during the debugging process after installing the LCD splicing wall screen. After the unremitting efforts of our engineering staff, we finally found the reason and solution. The detailed analysis will be carried out below.
Symptoms: The picture has many lines of ripples
Cause: Static electricity.
The cause of static electricity:
Microscopically, according to the theory of atomic physics, when a substance is electrically neutral, the substance is in an electrical equilibrium state. Because of the gain and loss of electrons generated by the contact of electrons of different substances, the substance loses its electrical balance and generates an electrostatic phenomenon.
From a macroscopic point of view, the friction between the objects generates heat, stimulates the electron transfer, and the contact and separation between the objects produces electron transfer. The electromagnetic induction causes the unbalanced distribution of the surface charge of the object, and the combined effect of friction and electromagnetic induction.
The main culprit of static electricity is electrostatic voltage, which is produced by the contact and separation of different kinds of substances. This effect is known as triboelectric charging, and the voltage generated depends on the nature of the material itself that rubs against each other. Because the DID liquid crystal splicing display is mainly in the actual production process, the direct contact and indirect contact between the human body and related components generate static electricity. Therefore, according to the characteristics of the industry, we can do some targeted static precautions.
solution:
The generation of static electricity is a natural law that we cannot completely eliminate, so we can only propose some suggestions to prevent static electricity from being generated. The installer must observe the following points during the installation process.
First, grounding
Grounding is the direct discharge of static electricity to the earth through the wire connection. This is the most direct and effective way to prevent static electricity. The conductor is usually grounded. The main cabinet, DID LCD splicing screen is connected to the wire.
Second, insulation
Insulation is to stick the insulating tape on the DID LCD splicing screen and the metal and power connection to prevent static electricity.
Third, the line is separated from the line
The separation of the line and the line means that the VGA line and the power line are separated. We all know that the VGA cable we use is generally not shielded. Unshielded VGA cable and power cable are easy to generate static interference when walking together
The above is the most basic point to prevent the generation of static electricity, but there are still many. For example, our installation and commissioning personnel and other personnel who will touch the related equipment must work in accordance with the relevant matters of the "Public Security System Installation Operation". When the relevant equipment is to be touched, the static electricity of the human body should be released in advance to prevent the voltage of the human body from affecting the relevant parameters of the machine, which brings unnecessary troubles for installation and debugging.
Table Top Gas Stove,Double Burner Gas Cooke,Mini Gas Cookers,Teflon Coated Gas Cooker
xunda science&technology group co.ltd , https://www.gasstove.be