The application range of surveillance cameras is getting wider and wider. In addition to the camera itself, a pan / tilt equipped with a flexible operation of the camera is also an important part. Inflexible or incapable rotation of the gimbal is a problem that often occurs in surveillance cameras. What causes these problems and how to solve them?
Surveillance of surveillance camera Yun Tao
There are many types of surveillance cameras. Currently, there are many cameras with high imitation technology on the market, such as integrated imitation Samsung surveillance cameras. The integrated imitation Samsung surveillance camera is actually a built-in lens with automatic zoom focusing, used with a gimbal, and a remotely controlled 485, auto-focusing camera, which is more convenient to use. However, in the process of using the integrated imitation Samsung surveillance camera, we will also encounter the problem that the gimbal will not work or cannot rotate soon after use. Here we will analyze the specific reasons for everyone:
1. When the distance is too far, the operation keyboard cannot remotely control the camera (including the lens) and the gimbal through the decoder. This is mainly because when the distance is too far, the effect of the control signal will be greatly reduced, and the control signal received by the decoder is too weak. At this time, a relay box should be installed at a certain distance to amplify the control signal.
2. Only the pan / tilt head of the camera is allowed to be installed, and the method of lifting is used when it is used. The hoisting method leads to increased operating load of the gimbal, so the transmission mechanism of the gimbal will be damaged soon after use, or even burn the motor;
3. The total weight of the camera and its protective cover exceeds the load bearing of the gimbal. Especially for the gimbal used outdoors, the weight of the protective cover is often too large, and the problem that the gimbal cannot rotate (especially in the vertical direction) often occurs;
4. The outdoor gimbal has malfunctioned or even been damaged due to the environmental temperature being too high, too low, or poor performance such as waterproof and antifreeze;
After such a detailed understanding above, we clearly know that if such problems occur in the integrated imitation Samsung surveillance camera in the future, we will be able to identify and solve the problem very proficiently.
Camera pan / tilt failure and solution
The gimbal does not work well or cannot rotate at all soon after use, which is a common failure of the gimbal. In addition to the factors of product quality, this situation is generally caused by the following reasons:
(1) Only the pan / tilt head where the camera is installed is allowed, and the method of lifting is used when it is used. In this case, the hoisting method causes the gimbal's operating load to increase, so it will soon cause damage to the gimbal's rotating mechanism and even burn the motor
(2) The total weight of the camera and its protective cover exceeds the load-bearing capacity of the gimbal. Especially for the gimbal used outdoors, the weight of the protective cover is often too large, and the problem that the gimbal cannot rotate (especially in the vertical direction) often occurs.
(3) The outdoor gimbal has malfunctioned or even been damaged due to the high ambient temperature, low temperature, poor waterproof and anti-freezing measures.
1. Synchronization failure of several PTZs in the monitoring system
(1.) There are many possibilities: 485 is broken, check the 485 control module or controller of the DVR, and replace it with other substitute test.
(2.) One of the units is broken and the control line is faulty. One unit is powered off and tested. As long as one of the units fails on the control line (such as short circuit, open circuit, etc.), it will affect the entire control line
(3.) The address conflict affects the control line due to a certain address confusion, and an address error may cause the address of other lines not to be recognized
(4.) The monitoring software is faulty, and the control settings in the monitoring software are wrong, such as control protocol, control address, port frequency, etc.
(5.) There is a problem with the gimbal control line.
(6.) The main control end is reset, or the PC-type monitoring host system is reinstalled, so that the decoder address is all 0. This problem can be changed as long as the decoder address is changed.
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2. Monitoring failure and no signal, the gimbal can't move
Is the gimbal and decoder separated? Because some PTZs have their own decoders. If it is separated, who is bad and who is. If it is determined that a certain component inside is damaged, then of course the component can be replaced separately.
(1.) If the line is broken, and if wiring is not possible, you can use a video signal wireless transmitter, about 200 is enough, the distance can reach 100 meters.
(2.) Is the camera stuck? Or is the power supply between the decoder and the camera causing the decoder to have insufficient voltage or you have reversed it? The layman's question is really ugly.
(3.) It is easy to cause the BNC head of the camera to be pulled due to the rotation of the gimbal, resulting in poor contact of the video cable. Just replace the bnc head, which is the connector of the signal cable, 2 yuan.
3. Monitor pan / tilt out of control
As long as the agreement. The baud rate and other related settings are normal, and the video capture card can control the multi-channel gimbal. According to your description, there are roughly the following reasons, you can exclude them one by one:
(1.) If the gimbal runs normally, the problem of control circuit or software setting needs to be considered
(2.) Test whether the control signal line has signal transmission
(3.) Use source code converter,
(4.) Determine whether the equipment is faulty. The equipment in question can be removed to the equipment room for testing to determine the technology of the fault.
Related knowledge: Key points and precautions for PTZ selection
1. Protection level
The protection level is very important for outdoor environment. It can be applied to outdoor environment in accordance with IP65. However, for severe weather conditions and considering the extension of equipment life and the feasibility of the gimbal, IP66 or higher protection Level will be preferred.
2. Speed
The gimbal is generally divided into an AC fixed-speed gimbal and a DC variable-speed gimbal. The AC fixed-speed gimbal has a low and constant speed, and the DC variable-speed gimbal has a variable speed and a high speed. The AC PTZ is 6 ～ 9 ° / sec horizontally and 3 ～ 6 ° / sec vertically. It is suitable for occasions that do not need fast tracking. DC pan / tilt horizontal 20 ° ～ 50 ° / sec, vertical 10 ° ～ 30 ° / sec, suitable for fast tracking or other occasions requiring high speed
3. Rotation angle
The rotation angle of the gimbal is divided into a horizontal angle and a vertical angle. The vertical angle is related to the load installation method. Generally, the vertical angle of the top-mounted gimbal is -90 ° ～ 40 °, and the vertical angle of the side-mounted gimbal is about ± 100 °, horizontal The rotation angle can generally reach 345 ° ～ 365 °. In actual design, it is necessary to ensure that there is no monitoring dead angle according to the construction needs. Therefore, the vertical angle needs to be -90 ° -20 °, and the horizontal rotation angle needs to be 360 ​​°.
4. Gear clearance
Gear backlash, also known as backlash, is an important indicator for investigating the rotation accuracy of the gimbal. The smaller the gear gap, the higher the accuracy of the gimbal, especially for the high-speed rotating gimbal or the gimbal with preset function.
5. Torque
For a gimbal with a certain load, the greater the torque, the greater the gimbal's resistance to non-motor starting, which is very important for harsh weather conditions.
6. Bearing method and installation method
According to the load installation method, the gimbal has a top-mounted method and a side-mounted method, and the actual selection needs to refer to the load and the cognitive level of the construction unit. The installation methods of the gimbal are generally four types: formal installation, ceiling installation, ceiling installation, and embedded installation. Embedded installation is divided into upper embedded installation and lower embedded installation. The same cloud 7 and auxiliary functions need to be considered during design.
The auxiliary functions of the gimbal include options such as automatic horizontal scanning, preset position, and heater. The design needs to be determined according to the use environment and the functional requirements of the user.
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8. Spherical and hemispherical gimbal
The above-mentioned gimbal is more suitable for installation under outdoor all-weather conditions. For the choice of ball / hemispherical gimbal, it is more suitable for the appearance and concealment without the need for smart fast ball. The internal space is limited, so it is not suitable to install a lens with a large multiple and a long focal length. The dome / hemispherical gimbal is difficult to clean due to the lower dome cover acting as a protective cover, so it is not recommended for use in harsh weather conditions.
In addition, the following points need to be noted when selecting a model:
(1) Distinguish indoor and outdoor installation. The outdoor gimbal has better water resistance, corrosion resistance, constant temperature and impact resistance than the indoor gimbal to adapt to the complex outdoor climatic conditions, and its weight and carrying capacity are also larger than the indoor gimbal.
(2) According to special environmental requirements. Places such as hotels, residential quarters, government agencies, office buildings, etc. generally have higher requirements for concealment after product installation, so spherical gimbals are mostly used. It should be noted that, because the indoor hemispherical gimbal needs to be embedded and installed on the ceiling, if the wall ceiling cannot be hollowed out, it cannot be installed.
(3) If you add an infrared light to the camera, you must use an ordinary gimbal. Infrared lights cannot be mounted on the ball head.
(4) Since the ball gimbal does not have a mechanical wiper, if you must use the wiper function, you can only use an ordinary gimbal with a wiper protective cover
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The application scope of security network surveillance cameras is getting wider and wider. In addition to the camera itself, the pan / tilt equipped with the camera's flexible operation is also an important part. Inflexible or incapable rotation of the gimbal is a problem that often occurs in surveillance cameras. What causes these problems and how to solve them?
Surveillance of surveillance camera Yun Tao
There are many types of surveillance cameras. Currently, there are many cameras with high imitation technology on the market, such as integrated imitation Samsung surveillance cameras. The integrated imitation Samsung surveillance camera is actually a built-in lens with automatic zoom focusing, used with a gimbal, and a remotely controlled 485, auto-focusing camera, which is more convenient to use. However, in the process of using the integrated imitation Samsung surveillance camera, we will also encounter the problem that the gimbal will not work or cannot rotate soon after use. Here we will analyze the specific reasons for everyone:
1. When the distance is too far, the operation keyboard cannot remotely control the camera (including the lens) and the gimbal through the decoder. This is mainly because when the distance is too far, the effect of the control signal will be greatly reduced, and the control signal received by the decoder is too weak. At this time, a relay box should be installed at a certain distance to amplify the control signal.
2. Only the pan / tilt head of the camera is allowed to be installed, and the method of lifting is used when it is used. The hoisting method leads to increased operating load of the gimbal, so the transmission mechanism of the gimbal will be damaged soon after use, or even burn the motor;
3. The total weight of the camera and its protective cover exceeds the load bearing of the gimbal. Especially for the gimbal used outdoors, the weight of the protective cover is often too large, and the problem that the gimbal cannot rotate (especially in the vertical direction) often occurs;
4. The outdoor gimbal has malfunctioned or even been damaged due to the environmental temperature being too high, too low, or poor performance such as waterproof and antifreeze;
After such a detailed understanding above, we clearly know that if such problems occur in the integrated imitation Samsung surveillance camera in the future, we will be able to identify and solve the problem very proficiently.
Camera pan / tilt failure and solution
The gimbal does not work well or cannot rotate at all soon after use, which is a common failure of the gimbal. In addition to the factors of product quality, this situation is generally caused by the following reasons:
(1) Only the pan / tilt head where the camera is installed is allowed, and the method of lifting is used when it is used. In this case, the hoisting method causes the gimbal's operating load to increase, so it will soon cause damage to the gimbal's rotating mechanism and even burn the motor
(2) The total weight of the camera and its protective cover exceeds the load-bearing capacity of the gimbal. Especially for the gimbal used outdoors, the weight of the protective cover is often too large, and the problem that the gimbal cannot rotate (especially in the vertical direction) often occurs.
(3) The outdoor gimbal has malfunctioned or even been damaged due to the high ambient temperature, low temperature, poor waterproof and anti-freezing measures.
1. Synchronization failure of several PTZs in the monitoring system
(1.) There are many possibilities: 485 is broken, check the 485 control module or controller of the DVR, and replace it with other substitute test.
(2.) One of the units is broken and the control line is faulty. One unit is powered off and tested. As long as one of the units fails on the control line (such as short circuit, open circuit, etc.), it will affect the entire control line
(3.) The address conflict affects the control line due to a certain address confusion, and an address error may cause the address of other lines not to be recognized
(4.) The monitoring software is faulty, and the control settings in the monitoring software are wrong, such as control protocol, control address, port frequency, etc.
(5.) There is a problem with the gimbal control line.
(6.) The main control end is reset, or the PC-type monitoring host system is reinstalled, so that the decoder address is all 0. This problem can be changed as long as the decoder address is changed.
2. Monitoring failure and no signal, the gimbal can't move
Is the gimbal and decoder separated? Because some PTZs have their own decoders. If it is separated, who is bad and who is. If it is determined that a certain component inside is damaged, then of course the component can be replaced separately.
(1.) If the line is broken, and if wiring is not possible, you can use a video signal wireless transmitter, about 200 is enough, the distance can reach 100 meters.
(2.) Is the camera stuck? Or is the power supply between the decoder and the camera causing the decoder to have insufficient voltage or you have reversed it? The layman's question is really ugly.
(3.) It is easy to cause the BNC head of the camera to be pulled due to the rotation of the gimbal, resulting in poor contact of the video cable. Just replace the bnc head, which is the connector of the signal cable, 2 yuan.
3. Monitor pan / tilt out of control
As long as the agreement. The baud rate and other related settings are normal, and the video capture card can control the multi-channel gimbal. According to your description, there are roughly the following reasons, you can exclude them one by one:
(1.) If the gimbal runs normally, the problem of control circuit or software setting needs to be considered
(2.) Test whether the control signal line has signal transmission
(3.) Use source code converter,
(4.) Determine whether the equipment is faulty. The equipment in question can be removed to the equipment room for testing to determine the technology of the fault.
Related knowledge: Key points and precautions for PTZ selection
1. Protection level
The protection level is very important for outdoor environment. It can be applied to outdoor environment in accordance with IP65. However, for severe weather conditions and considering the extension of equipment life and the feasibility of the gimbal, IP66 or higher protection Level will be preferred.
2. Speed
The gimbal is generally divided into an AC fixed-speed gimbal and a DC variable-speed gimbal. The AC fixed-speed gimbal has a low and constant speed, and the DC variable-speed gimbal has a variable speed and a high speed. The AC PTZ is 6 ～ 9 ° / sec horizontally and 3 ～ 6 ° / sec vertically. It is suitable for occasions that do not need fast tracking. DC pan / tilt horizontal 20 ° ～ 50 ° / sec, vertical 10 ° ～ 30 ° / sec, suitable for fast tracking or other occasions requiring high speed
3. Rotation angle
The rotation angle of the gimbal is divided into a horizontal angle and a vertical angle. The vertical angle is related to the load installation method. Generally, the vertical angle of the top-mounted gimbal is -90 ° ～ 40 °, and the vertical angle of the side-mounted gimbal is about ± 100 ° The rotation angle can generally reach 345 ° ～ 365 °. In actual design, it is necessary to ensure that there is no monitoring dead angle according to the construction needs. Therefore, the vertical angle needs to be -90 ° -20 °, and the horizontal rotation angle needs to be 360 ​​°.
4. Gear clearance
Gear backlash, also known as backlash, is an important indicator for investigating the rotation accuracy of the gimbal. The smaller the gear gap, the higher the accuracy of the gimbal, especially for the high-speed rotating gimbal or the gimbal with preset function.
5. Torque
For a gimbal with a certain load, the greater the torque, the greater the gimbal's resistance to non-motor starting, which is very important for harsh weather conditions.
6. Bearing method and installation method
According to the load installation method, the gimbal has a top-mounted method and a side-mounted method, and the actual selection needs to refer to the load and the cognitive level of the construction unit. The installation methods of the gimbal are generally four types: formal installation, ceiling installation, ceiling installation, and embedded installation. The embedded installation is divided into upper embedded installation and lower embedded installation. The same needs to be considered during design
The auxiliary functions of the gimbal include options such as automatic horizontal scanning, preset position, and heater. The design needs to be determined according to the use environment and the functional requirements of the user.
8. Spherical and hemispherical gimbal
The above-mentioned gimbal is more suitable for installation under outdoor all-weather conditions. For the choice of ball / hemispherical gimbal, it is more suitable for the appearance and concealment without the need for smart fast ball. The internal space is limited, so it is not suitable to install a lens with a large multiple and a long focal length. The dome / hemispherical gimbal is difficult to clean due to the lower dome cover acting as a protective cover, so it is not recommended for use in harsh weather conditions.
In addition, the following points need to be noted when selecting a model:
(1) Distinguish indoor and outdoor installation. The outdoor gimbal has better water resistance, corrosion resistance, constant temperature and impact resistance than the indoor gimbal to adapt to the complex outdoor climatic conditions, and its weight and carrying capacity are also larger than the indoor gimbal.
(2) According to special environmental requirements. Places such as hotels, residential quarters, government agencies, office buildings, etc. generally have higher requirements for concealment after product installation, so spherical gimbals are mostly used. It should be noted that, because the indoor hemispherical gimbal needs to be embedded and installed on the ceiling, if the wall ceiling cannot be hollowed out, it cannot be installed.
(3) If you add an infrared light to the camera, you must use an ordinary gimbal. Infrared lights cannot be mounted on the ball head.
(4) Since the gimbal does not have a mechanical wiper, if you must use the wiper function, you can only use an ordinary gimbal with a wiper protective cover.
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