The scope of application of surveillance cameras is becoming more and more widespread. In addition to the camera itself, a pan/tilt with flexible operation of the camera is also an important component. The inflexible or incapable rotation of the gimbal is a problem that often occurs in surveillance cameras. What causes these problems and how can they be solved?
Surveillance camera Yun Tao multiple faults
There are many kinds of surveillance cameras. There are many kinds of cameras with high imitation technology on the market, such as integrated Samsung surveillance cameras. Integrated Samsung imitation surveillance camera is actually a built-in lens, automatic zoom focus, with PTZ use, through 485 remote control, auto focus camera, use more convenient. However, in the process of integrating the Samsung surveillance camera, we will also encounter the problem that the pan/tilt will not operate quickly or can not be rotated. Here we analyze the specific reasons:
1. When the distance is too far, the keyboard cannot be controlled by the decoder on the camera (including the lens) and the head. 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 will be too weak. At this time, a relay box should be installed at a certain distance to amplify the control signal.
2. PTZs that only allow the camera to be mounted are lifted when used. The hoisting method leads to an increase in the operating load of the PTZ. Therefore, the use of the hoisting method will soon lead to damage to the drive mechanism of the PTZ, and even burn the motor.
3. The total weight of the camera and its protective cover exceeds the weight of the PTZ. Especially for PTZs that are used outdoors, the weight of the protective cover is often too large, and there is often the problem that the PTZ will not move (especially the vertical direction);
4, outdoor PTZ due to high ambient temperature, too low or waterproof, antifreeze and other poor performance and failure and even damage;
After such a detailed understanding of the above, we clearly know that if the integration of Samsung surveillance camera in the future if such a problem, we can be very proficient to identify problems and solve problems.
PTZ surveillance cameras faults and solutions <br> <br> head dysfunctional or shortly after use can not rotate, pan is a common fault. The appearance of this situation, apart from the factors of product quality, is generally caused by the following reasons:
(1) Only the pan/tilt that is mounted on the camera is allowed to use the lifting method. In this case, the hoisting method leads to an increase in the operating load of the pan/tilt. Therefore, the use of the hoisting method will soon lead to damage to the rotating mechanism of the pan/tilt, or even the burning of the motor.
(2) The total weight of the camera and its protective cover exceeds the weight of the PTZ. Especially for PTZs that are used outdoors, the weight of the protective cover is often too large, and there is often the problem that the PTZ will not move (especially in the vertical direction).
(3) The outdoor pan/tilt head is faulty or even damaged due to poor ambient temperature, too low, waterproof, and frost-proof measures.
1. Monitoring System Several PTZ synchronization failures (1.) There are many possibilities: 485 is broken, check the DVR's 485 control module or controller, there are other alternative replacement tests.
(2.) If one of the stations is broken, the control line is faulty, and one station is powered off, as long as one of them fails on the control line (such as a short circuit or open circuit), it will affect the entire control line (3 .) An address confusion causes address conflicts affecting the control circuit. An error in one address may cause the other circuit's address not to be identified. (4.) Monitoring software faults, control software in the control settings have errors, like control protocols, control Address, port frequency, etc.
(5) There was a problem with the PTZ control line.
(6.) The host is reset, or the PC monitor host system is re-installed so that the decoder address is all 0. This problem simply changes the address of the decoder.
2. No signal to monitor the failure PTZ does not move to PTZ and decoder is not separated? Because some PTZs come with a decoder. If someone separates, then who is badly changed. If it is determined that a component inside is damaged, it is of course possible to replace the component alone.
(1.) If the line is broken, and it is not possible to wire, you can use a wireless transmitter for video signals. About 200 is enough and the distance is 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 have you reversed it? The problem with laymen is really hard to understand.
(3.) This is easy to cause the BNC head of the camera to be pulled due to the rotation of the PTZ and cause the video cable to be in poor contact. To replace the bNC head, it is just the connector of the signal cable, 2 dollars.
3, monitoring PTZ out of control as long as the agreement. The baud rate and other related settings are normal. The video capture card can control multiple PTZ cameras. According to your description, there are roughly the following reasons. You can exclude them one by one:
(1.) If the PTZ is operating normally, consider the control line or software settings (2.) Test the control signal line for signal transmission (3.) Use a source code converter,
(4.) Determine whether the equipment is faulty. The equipment in question can be removed and tested in the equipment room to determine the technology where the fault is located.
Relevant knowledge: points and precautions for PTZ selection
1. Protection class The protection class is very important for outdoor applications. It can be used in outdoor environments in compliance with IP65. However, considering the harsher climatic conditions and extending the life of the equipment and improving the feasibility of the gimbal, IP66 or A higher degree of protection will be preferred.
2. The speed PTZ is generally divided into AC fixed speed PTZ and DC variable speed PTZ, and the AC fixed PTZ speed is low and constant. The DC variable speed PTZ can have variable speed and high speed. AC PTZ level 6~9°/sec, vertical 3~6°/sec is suitable for occasions where fast tracking is not required. DC PTZ level 20°～50°/second, vertical 10°～30°/second is suitable for fast tracking or other occasions requiring high rotation speed. 3ã€Rotating angle PTZ rotation angle is divided into horizontal angle and vertical angle, vertical angle and load. Related to the installation method, the vertical angle of the top mounted pan/tilt head is -90°~40°, the vertical angle of the side mounted pan/tilt head is ±100°, and the horizontal angle can generally reach 345°~365°. Need to ensure that there is no monitoring dead angle, so the vertical angle needs to guarantee -90 ° ~ 20 °, horizontal rotation angle need to ensure 360 ​​°.
Gear Backlash Gear Backlash (GearBacklash), also known as backlash, is an important indicator for investigating the accuracy of PTZ rotation. The smaller the gear gap, the higher the accuracy of the pan tilt, especially for high-speed pan/tilt heads or PTZs with preset functions.
5. Torque For a given load, the greater the torque, the greater the resistance of the PTZ to non-motor starting. This is very important for more severe weather conditions.
6. Load-bearing mode and installation mode According to the load installation mode, the PTZ has the top-loading mode and the side-loading mode. When actually selecting, you need to refer to the load level and the construction unit’s choice of cognition level. PTZ mounting methods are generally installed, hoisted, ceiling mounted, embedded installation of four, embedded installation is divided into the upper and lower embedded installation, design needs to consider the same when the PTZ loading indicator load The rate of decline will not be recommended if there is no special need for lifting.
7. Auxiliary Functions The auxiliary functions of the PTZ 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, hemispherical head
The above-mentioned PTZ is more suitable for outdoor installation under all-weather conditions. For ball/hemispherical PTZ selection, it is more suitable for the occasions that are beautiful and hidden without the need for smart domes, and spherical/hemispherical heads. The interior space is limited and it is not suitable for mounting large, long focal length lenses. Ball/hemispherical heads are difficult to clean due to the lower dome cover acting as a protective cover and are therefore not recommended for use in harsh weather conditions.
In addition, the following points need to be noted when selecting a model:
(1) Identify indoor and outdoor installations. Outdoor PTZ is better than indoor PTZ waterproof, corrosion resistance, constant temperature and impact resistance, to adapt to outdoor complex climatic conditions, its weight and carrying capacity are also greater than indoor PTZ.
(2) According to special environmental requirements. Such as hotels, communities, government agencies, office buildings and other places, generally have higher requirements for concealment after installation, and therefore use ball-type heads. It should be noted that because the indoor hemispherical pan tilt needs to be embedded and installed, if the top of the wall cannot be hollowed out, it cannot be installed.
(3) If you add infrared light to the camera, you must use the ordinary head. Ball heads cannot mount infrared lights.
(4) Since the ball head does not have a mechanical wiper, if the wiper function must be used, only the ordinary head can be used with a wiper boot.
Surveillance camera Yun Tao multiple faults
There are many kinds of surveillance cameras. There are many kinds of cameras with high imitation technology on the market, such as integrated Samsung surveillance cameras. Integrated Samsung imitation surveillance camera is actually a built-in lens, automatic zoom focus, with PTZ use, through 485 remote control, auto focus camera, use more convenient. However, in the process of integrating the Samsung surveillance camera, we will also encounter the problem that the pan/tilt will not operate quickly or can not be rotated. Here we analyze the specific reasons:
1. When the distance is too far, the keyboard cannot be controlled by the decoder on the camera (including the lens) and the head. 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 will be too weak. At this time, a relay box should be installed at a certain distance to amplify the control signal.
2. PTZs that only allow the camera to be mounted are lifted when used. The hoisting method leads to an increase in the operating load of the PTZ. Therefore, the use of the hoisting method will soon lead to damage to the drive mechanism of the PTZ, and even burn the motor.
3. The total weight of the camera and its protective cover exceeds the weight of the PTZ. Especially for PTZs that are used outdoors, the weight of the protective cover is often too large, and there is often the problem that the PTZ will not move (especially the vertical direction);
4, outdoor PTZ due to high ambient temperature, too low or waterproof, antifreeze and other poor performance and failure and even damage;
After such a detailed understanding of the above, we clearly know that if the integration of Samsung surveillance camera in the future if such a problem, we can be very proficient to identify problems and solve problems.
PTZ surveillance cameras faults and solutions <br> <br> head dysfunctional or shortly after use can not rotate, pan is a common fault. The appearance of this situation, apart from the factors of product quality, is generally caused by the following reasons:
(1) Only the pan/tilt that is mounted on the camera is allowed to use the lifting method. In this case, the hoisting method leads to an increase in the operating load of the pan/tilt. Therefore, the use of the hoisting method will soon lead to damage to the rotating mechanism of the pan/tilt, or even the burning of the motor.
(2) The total weight of the camera and its protective cover exceeds the weight of the PTZ. Especially for PTZs that are used outdoors, the weight of the protective cover is often too large, and there is often the problem that the PTZ will not move (especially in the vertical direction).
(3) The outdoor pan/tilt head is faulty or even damaged due to poor ambient temperature, too low, waterproof, and frost-proof measures.
1. Monitoring System Several PTZ synchronization failures (1.) There are many possibilities: 485 is broken, check the DVR's 485 control module or controller, there are other alternative replacement tests.
(2.) If one of the stations is broken, the control line is faulty, and one station is powered off, as long as one of them fails on the control line (such as a short circuit or open circuit), it will affect the entire control line (3 .) An address confusion causes address conflicts affecting the control circuit. An error in one address may cause the other circuit's address not to be identified. (4.) Monitoring software faults, control software in the control settings have errors, like control protocols, control Address, port frequency, etc.
(5) There was a problem with the PTZ control line.
(6.) The host is reset, or the PC monitor host system is re-installed so that the decoder address is all 0. This problem simply changes the address of the decoder.
2. No signal to monitor the failure PTZ does not move to PTZ and decoder is not separated? Because some PTZs come with a decoder. If someone separates, then who is badly changed. If it is determined that a component inside is damaged, it is of course possible to replace the component alone.
(1.) If the line is broken, and it is not possible to wire, you can use a wireless transmitter for video signals. About 200 is enough and the distance is 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 have you reversed it? The problem with laymen is really hard to understand.
(3.) This is easy to cause the BNC head of the camera to be pulled due to the rotation of the PTZ and cause the video cable to be in poor contact. To replace the bNC head, it is just the connector of the signal cable, 2 dollars.
3, monitoring PTZ out of control as long as the agreement. The baud rate and other related settings are normal. The video capture card can control multiple PTZ cameras. According to your description, there are roughly the following reasons. You can exclude them one by one:
(1.) If the PTZ is operating normally, consider the control line or software settings (2.) Test the control signal line for signal transmission (3.) Use a source code converter,
(4.) Determine whether the equipment is faulty. The equipment in question can be removed and tested in the equipment room to determine the technology where the fault is located.
Relevant knowledge: points and precautions for PTZ selection
1. Protection class The protection class is very important for outdoor applications. It can be used in outdoor environments in compliance with IP65. However, considering the harsher climatic conditions and extending the life of the equipment and improving the feasibility of the gimbal, IP66 or A higher degree of protection will be preferred.
2. The speed PTZ is generally divided into AC fixed speed PTZ and DC variable speed PTZ, and the AC fixed PTZ speed is low and constant. The DC variable speed PTZ can have variable speed and high speed. AC PTZ level 6~9°/sec, vertical 3~6°/sec is suitable for occasions where fast tracking is not required. DC PTZ level 20°～50°/second, vertical 10°～30°/second is suitable for fast tracking or other occasions requiring high rotation speed. 3ã€Rotating angle PTZ rotation angle is divided into horizontal angle and vertical angle, vertical angle and load. Related to the installation method, the vertical angle of the top mounted pan/tilt head is -90°~40°, the vertical angle of the side mounted pan/tilt head is ±100°, and the horizontal angle can generally reach 345°~365°. Need to ensure that there is no monitoring dead angle, so the vertical angle needs to guarantee -90 ° ~ 20 °, horizontal rotation angle need to ensure 360 ​​°.
Gear Backlash Gear Backlash (GearBacklash), also known as backlash, is an important indicator for investigating the accuracy of PTZ rotation. The smaller the gear gap, the higher the accuracy of the pan tilt, especially for high-speed pan/tilt heads or PTZs with preset functions.
5. Torque For a given load, the greater the torque, the greater the resistance of the PTZ to non-motor starting. This is very important for more severe weather conditions.
6. Load-bearing mode and installation mode According to the load installation mode, the PTZ has the top-loading mode and the side-loading mode. When actually selecting, you need to refer to the load level and the construction unit’s choice of cognition level. PTZ mounting methods are generally installed, hoisted, ceiling mounted, embedded installation of four, embedded installation is divided into the upper and lower embedded installation, design needs to consider the same when the PTZ loading indicator load The rate of decline will not be recommended if there is no special need for lifting.
7. Auxiliary Functions The auxiliary functions of the PTZ 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, hemispherical head
The above-mentioned PTZ is more suitable for outdoor installation under all-weather conditions. For ball/hemispherical PTZ selection, it is more suitable for the occasions that are beautiful and hidden without the need for smart domes, and spherical/hemispherical heads. The interior space is limited and it is not suitable for mounting large, long focal length lenses. Ball/hemispherical heads are difficult to clean due to the lower dome cover acting as a protective cover and are therefore not recommended for use in harsh weather conditions.
In addition, the following points need to be noted when selecting a model:
(1) Identify indoor and outdoor installations. Outdoor PTZ is better than indoor PTZ waterproof, corrosion resistance, constant temperature and impact resistance, to adapt to outdoor complex climatic conditions, its weight and carrying capacity are also greater than indoor PTZ.
(2) According to special environmental requirements. Such as hotels, communities, government agencies, office buildings and other places, generally have higher requirements for concealment after installation, and therefore use ball-type heads. It should be noted that because the indoor hemispherical pan tilt needs to be embedded and installed, if the top of the wall cannot be hollowed out, it cannot be installed.
(3) If you add infrared light to the camera, you must use the ordinary head. Ball heads cannot mount infrared lights.
(4) Since the ball head does not have a mechanical wiper, if the wiper function must be used, only the ordinary head can be used with a wiper boot.
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