Method of selecting television monitoring equipment

[ Huaqiang Security Network News ] When installing the TV monitoring system, it is the key to selecting the camera or the lens. In fact, the selection of the PTZ + shield + bracket + control decoder is also required. Let me share it with you. Let's go!
Monitoring equipment
Yuntai <br> Yuntai can be simply understood as the base for mounting the camera, but the base can be rotated in all directions (horizontal and vertical) or (horizontal). Therefore, the use of the gimbal expands the field of view of the camera. In the TV monitoring system, the place where the road monitoring is required (such as a hall) must use the pan/tilt. Pay attention to the following points when choosing a PTZ.
(1) The load capacity of the selected pan/tilt is greater than 1.2 times the actual load. That is to say, the sum of the weights of all the equipment on the gimbal should be less than the load capacity of the gimbal. If the gimbal is fully loaded or overloaded, it can avoid strong work, but it is inert when starting, especially when it is rotated vertically. Greatly affected the inspection effect.
(2) When the pan/tilt is stopped, it should have better self-locking performance, and the return angle should be less than 1 when braking.
(3) When the indoor pan/tilt is at maximum load, the noise should be less than 50dB.
Protective cover <br> The device used to protect the camera is called a protective cover. There are indoor and outdoor points. The main function of the indoor protective cover is dustproof. In addition to dustproof, the outdoor protective cover plays a major role in protecting the camera in harsh natural environments (such as rain, snow, low temperature, high temperature, etc.). jobs. This not only requires a strict sealing structure, but also has a wiper, a sprinkler, etc., and has a function of heating and cooling. This determines that the price of the outdoor shield is much higher than the indoor shield. When selecting the protective cover, it should also be noted that the nominal size of the protective cover is the same as the nominal size of the camera, that is, the 1/3" camera uses a 1/3" protective cover. If it is difficult to be consistent, a large-size protective cover can be used with a small-sized camera; otherwise, it can't.
The bracket is used to fix the components of the camera, and is wall mounted, hoisted, and the like. The choice of the bracket is relatively simple, as long as the load capacity is greater than the total weight of the equipment installed thereon, otherwise the bracket deformation is likely to occur, and the pan/tilt rotates to cause jitter, which affects the quality of the monitored image.
Control Decoder <br> In a TV monitoring system with a pan/tilt, motorized lens and outdoor enclosure, a control decoder must be provided. In this way, the corresponding buttons of the keyboard can be manipulated in the control room to complete the control of each action and function of the front end device. The control decoder must be the same brand as the system host. This is because the communication protocol and coding method of the control decoder produced by different manufacturers and the system host are generally different, unless a control decoder specifically describes the device and a certain brand in the manual. The host is compatible, otherwise it must not be used.

High Speed Door Accessories

About high speed Door Accessories:

1.Driving system: High Speed Door Servo System motor and control, motor SNMA / SEJ +reducer+flang+encoder+control box

2.Other accessories: Middle aluminium bar, bottom aluminium bar, aluminium vertical track, stainless steel vertical track, brushes,round nylon strip, PVC roll, rolling steel tube complete, drum be;;s for rolling tube, side end covers, stainless steel cover, steel tubes, air bag sensor system, safety light beam, Microwave sensor 24 Gigahertz,PVC welding machine, smoke and fire sensors, PVC transparent window, magnetic loop, photocell, remote control, manual push button, sound warning alarm Led lamp traffic light

For some main accessories, here is detain introduction:

1).24G radar sensor:

Brand: Hofic

Technology: Microwave processor

Maintain time: 0.5s

Protection: IP54

Transmitting frequency: 24.125GHz

Maximum installation height: <5meter

Transmitting power density: <5mw/cm2

Power consumption: <1W(VA)

Installation angle: 0-90°(lengthways) -30-30°(crosswise)

Supply voltage: AC&DC 12V-30V

2).Photocell:

Approval CE & ISO9001

Power supply AC/DC 12-30V

Static current 25A

Action current 40mA

Mounting distance Max 10m

NO or NC contact Done by NO./NC. contact selection

Working environment temperature -42℃ to +45℃

Working environment humidity 10 to 90%RH

Appearance dimensions( controller) 123*50*32mm(L*W*H)

Appearance dimensions(Magic eye head) 19*13mm(L*D)

3). Remote control

Operating Voltage: AC220V/50HZ+-20%

Transmit power:≤100mW;Super regenerative module, strong anti-interference

Operating temperature:-30℃-+70℃

Working frequency: 433MHZ;transmitter 1527, millions of encoding chip

Accept sensitivity:≤110dB

Manipulation method: electric remote control

Configure the quantity: Wireless number; factory configuration transmitter two. Can be equipped with PT2272 digital decoder chip

Configure the function: Up, down, stop, anti-lock full-featured reproduction

4). Magnetic loop

Voltage: 12V AC/DC +-10% 24V 115V AC+-10% 230V

Power: <2VA

Continued electrical output: 7A / 250V AC

Frequency range: 20 to 200K Hz

Response time: infinity (factory setting) or adjust maintain time

Sensitivity: 0.01% to 0.1% divided into 3 levels

Protection level: IP30

Electromagnetic compatibility (EMC) Complies with EM50081-1 and EN50082-2

Detection loop inductance: the limit of 40uH to 100uH ideal value 80uH to 300uH

Operating temperature: -25 ℃ to 70 ℃

Storage temperature: -40 ℃ to 85 ℃

Relative humidity: <90% non-condensing

Temperature compensation: automatic compensation up to 50 ℃ / h

Connection type: 11 pin DIN rail socket

Dimensions: 41 * 78 * 85 mm (width * height * length)

Weight: 250 grams

5). manual push button

This exit switch button is made of ABS and has built-in indicator light make it looks more elegant and fashionbale. It can be widely used in public entrance gates, public door, home, office, hotel, etc.

Door Exit Button Push To Exit Switch Door Opener For Access Control Security

Main Feature

Fashionable appearance

Made of ABS Plastic

Easy to install and operate

Used for access control

Specification

Mechanical Life: 500,000 test

Material: Plastic

6). Limit switch encoder

Voltage: DC5V-24V

Output voltage: high voltage≥85%Vcc, low voltage≤0.5V

Maximum mechanical speed:6000rpm

Anti-vibration: 50m/s,10-200HZ,XYZeach way 2 times.

Current consumption:≤30mA

Response frequency: 0-100KHZ

Protection: waterproof,oil proof,dust prevention, IP54

The output code system: binary code

Operating life: MTBF≥30000(+25℃,2000rpm)

Rotational inertia:4.0x10-8kgm²

Maximum load:radial direction20N

Axial direction:10N

Weight: about 0.4kg

High Speed Door Accessories,High Speed Door,Electronic High Speed Door Accessories

Shenzhen Hongfa Automatic Door Co., Ltd. , https://www.hfgaragedoor.com