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At present, in the explosion-proof monitoring market, explosion-proof pan/tilt heads are widely used due to their convenient and reliable operation. The explosion-proof head is driven by a micro-motor, and the output shaft can obtain the required torque and speed through the deceleration device, and the explosion-proof camera can be driven to track and monitor in all directions. The working angle of the explosion-proof platform can be limited by adjusting the micro switch. Because of the self-locking worm gear reducer, when the motor stops working, the explosion-proof camera can immediately hover over any working position to achieve the technical requirement that the explosion-proof camera can track the monitoring object within the set range. The remote control can also remotely control the explosion-proof camera.
Explosion-proof pan/tilt heads are not required on most explosion-proof cameras because many explosion-proof cameras are used to fixedly monitor a certain target or area. For example, elevators, relatively small spaces, and various entrances and exits do not require explosion-proof camera rotation. The indoor explosion-proof PTZ is small in weight and there is no rainproof device. The outdoor explosion-proof PTZ is important and needs rain protection devices. In addition to the anti-rain devices, the outdoor explosion-proof pan/tilt heads like Shiseki Technology also have automatic temperature control devices. In the modern explosion-proof monitoring system, the most commonly used is an all-explosion-proof pan/tilt head. When selecting, there are mainly the following indicators:
Explosion-proof PTZ explosion-proof grade
Explosion-proof grade is one of the most important indicators of the explosion-proof head, which is different from common conventional monitoring. The explosion-proof monitoring system is applied to the environment of flammable, explosive and flammable dust. It is the primary requirement for explosion protection. At present, explosion-proof heads and pans should all be tested and passed through the national explosion-proof electrical testing center and issued after the explosion-proof certificate to be able to carry out circulation and sales in the market. Explosion-proof PTZ explosion-proof certification mainly B grade and C grade two grades, C-level explosion-proof PTZ explosion-proof level is higher, the world of science and technology explosion-proof PTZ is through the national gas and dust the highest level of explosion-proof certification, so In the selection of explosion-proof Haeundae, the explosion-proof grade should be first examined.
Explosion-proof pan tilt range
The rotation range of the explosion-proof platform is divided into two indexes: horizontal rotation angle and vertical rotation angle. The horizontal rotation angle determines the horizontal rotation range of the explosion-proof pan/tilt head, generally 0-355 degrees. At present, there are also 360 degrees of rotation in the market, and the vertical rotation is ±45 degrees, ±90 degrees, and so on. The angle of the horizontal and vertical rotation can be adjusted by the limit switch, and the user should also consider this parameter when selecting.
Explosion-proof PTZ top bearing capacity
The center of gravity of the explosion-proof camera passes through the pivot center of the explosion-proof platform and is perpendicular to the work surface of the explosion-proof platform. At this time, the gravity that the explosion-proof platform can withstand is the maximum capacity of the explosion-proof platform. The maximum carrying capacity of the explosion-proof platform is also an important indicator of the explosion-proof platform. Explosion-proof pan/tilt heads must have waterproof performance when used outdoors, and the explosion-proof cameras matched with them should be considered for all-weather work. Some anti-freezing and heating devices also have large volume and weight, so their carrying capacity is generally higher. Shiguo Technology Explosion-proof PTZ has a load-bearing capacity of 30KG, which is sufficient to meet the load-bearing needs of users.
Explosion-proof head control
General explosion-proof PTZ, the control line is 5, of which l root is the public end of the power supply, and the other 4 are divided into upper, lower, left and right control. If one end of the power supply is connected to the common terminal, and the other end of the power supply is connected to the power line on the control, the explosion-proof pan/tilt head drives the explosion-proof camera to turn upwards, and the rest analogs. There are explosion-proof PTZ built-in relay control circuits, such explosion-proof PTZ often have 6 control inputs. One is the common end of the power supply, the other four are the upper, lower, left, and right ends, and one is the autorotating end. When one end of the power supply is connected to the common terminal, and the other end of the power supply is connected to the "automatic" terminal, the explosion-proof head will drive the explosion-proof camera to perform automatic rotation of up, down, left and right according to certain preset positions.
Explosion-proof pan/tilt power supply
In terms of power supply voltage, there are two types of AC 24V and 220V. The power consumption of the explosion-proof pan/tilt head is related to the weight bearing capacity, and the larger the bearing weight, the greater the power consumption. When the installation position of the explosion-proof platform is close to the control center and the number is not large, the control signal is usually output directly from the console, and the multi-core control cable is used for direct control. When the installation position of the explosion-proof platform is far away from the control center and the number is large, the bus-based transmission control signal is often used to decode the control signal through the terminal decoding box to control the rotation of the explosion-proof platform.
Explosion-proof pan/tilt rotation speed
When tracking the target, there is a certain requirement for the rotation speed of the explosion-proof platform. From an economical point of view, the speed of ordinary explosion-proof heads is constant, and the horizontal rotation speed is generally 3-10 degrees per second, and the vertical speed is about 4 degrees per second. The higher the speed of the explosion-proof head, the higher the power of the motor and the higher the price. Some applications need to move to a designated location within a short time. On the one hand, position control is required, and on the other hand, there is a high rotational speed. At present, some high-speed explosion-proof PTZ speed can reach more than 200 degrees per second. In this case, however, the user generally chooses to replace it with a high speed dome.
When selecting the explosion-proof head, be sure to consider the type of explosion-proof camera and other equipment of the explosion-proof monitoring system, and choose the most suitable explosion-proof head. Shiguo Technology is a professional provider of explosion-proof monitoring equipment and can provide a variety of solutions. It is your best choice for explosion-proof monitoring equipment!
Explosion-proof pan/tilt is one of the indispensable auxiliary equipments in the explosion-proof monitoring system. It can achieve the effect of up, down, left and right rotation monitoring with the use of explosion-proof cameras. Explosion-proof pan/tilt head can expand the surveillance range of explosion-proof cameras, at the same time, it can track specific targets within a certain range to take pictures and improve the use value of explosion-proof cameras.