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Security monitoring system maintenance three trick: Look, listen, smell

Sep 28, 2017

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Security monitoring system maintenance three trick: Look, listen, smell


In a video surveillance system used in a wide range of equipment, to the final stage of debugging or post-maintenance phase, there will always be such a problem, if you can not recognize the root of the problem, it is difficult to completely solve, this will cause customers Of the dissatisfied, affecting the company's reputation. Here are some common questions and solutions.

 

In a video surveillance system used in a wide range of equipment, to the final stage of debugging or post-maintenance phase, there will always be such a problem, if you can not recognize the root of the problem, it is difficult to completely solve, this will cause customers Of the dissatisfied, affecting the company's reputation.

 

Learn to repair security monitoring system, must see three trick, one must learn to observe the law, two to learn to listen to, three to learn to smell. 1, observation method is the visual inspection method, is the multimedia TV monitoring system to check the fault, identify and repair the first use

 

Learn to repair security monitoring system, must see three trick, one must learn to observe the law, two to learn to listen to, three to learn to smell.

 

1, observation method

 

Observation method is the visual inspection method, is the multimedia TV monitoring system to check, identify and repair the first use of the method. The so-called observation method is to use the human eye, ear, nose, hand and other sensory organs, with the look, listen, smell, touch and other basic means to find, check, troubleshooting - kind of method, it is based on maintenance personnel with Based on a certain basis and maintenance experience.

 

2, listen

 

Listening is also the most basic means of discovering, checking, and ultimately troubleshooting. Mainly listen to the system whether the alarm sound, the system equipment in the state of power when there is no fire, discharge sound, which equipment, which parts issued: the monitor head of the output on the main monitor Whether the sound, whether there is sound, whether the distortion, whether the noise of the size of the requirements: the system in the tape recorder or DVR playback sound is distorted, tone, whether buzzing, Abnormal noise, and the size of the output volume is in line with the requirements: PTZ in the motor drive under the operation of the number of friction, impact and other abnormal sound (such as scraping sound, tearing, etc.), PTZ operation noise Whether the size meets the requirements and so on. According to hear the abnormal sound, can help find, check

 

Attachment: common faults and troubleshooting of the monitoring system

 

Monitor camera no image how to do?

 

A, check whether the power supply is connected, the power supply voltage is sufficient; b, BNC connector or video cable is bad contact; c, lens aperture is open; d, video or DC drive auto iris lens control line is connected. e, is the monitor is normal. Such as whether to switch to the corresponding input channel. f, if for other reasons, need to return to factory maintenance.

 

What is the reason why the network camera can not display the image?

 

A: First check if the power indicator is on, indicating whether the camera is powered on. 2. If there is a network indicator, see if the indicator light is on or flashing. Indicates the network status of the camera. 3. Check whether the client computer network connectivity, whether with the network camera in the same subnet, is not the same LAN with the camera. For the computer can be provided through the normal network connection basis. 4. Check that the IE control is installed correctly. And allow running controls. 5. The camera's aperture is open. Indicating that the camera image CCD can be collected normally into the outside of the lens into the light. 6. Whether the camera color and brightness settings are reasonable.

 

Color distortion, color cast?

 

A, it may be that the white balance switch (AWB) is improperly set, or it may be that the ambient lighting conditions change too much. In this case, check whether the switch setting is in the OFF position and try to improve the lighting conditions of the environment.

 

A, automatic white balance, continuous mode - this time the white balance will be set with the scene color temperature changes and continuous adjustment, the range of 2800 ~ 6000K. This method is the most suitable for the scene where the color temperature of the scene changes continuously during the shooting, making the color appear natural, but for the scene with little or no white, the continuous white balance does not produce the best color effect. Button mode - first align the camera to white objects such as white walls, white paper, and then manually set the auto mode switch to the set position, leave it at the position for a few seconds or until the image is white, After being executed, the automatic mode switch is set to the manual position to lock the setting of the white balance, and the white balance setting will remain in the memory of the camera until the execution is changed again, in the range of 2300 to 10000K During this period, the setting will not be lost even if the camera is powered down. Setting the white balance with buttons is the most accurate and reliable, and is suitable for most applications.

 

B, manual white balance, open manual white balance will turn off the auto white balance, then change the image red or blue condition up to 107 levels for adjustment, such as increasing or decreasing the red one level, increasing or decreasing the blue A grade. In addition to the other, some cameras have white balance fixed at 3200K (incandescent level) and 5500K (daylight level) and other grade orders.

 

Is the camera's image quality bad?

 

c, video cable contact bad; d, electronic shutter or white balance set with or without problems; e, transmission distance is too far; f, the voltage is normal? c, the video cable is bad; ; G, near the existence of interference sources; h, installed in the elevator with the elevator to ensure that insulation from interference; i, CS interface is connected.


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