Modern security systems withThe use of GSM technology usually involves the inclusion of video cameras in the system. But these are not just cameras capable of fixing the “picture”, but devices that are capable of responding in real time to what is happening in the surveillance area. To do this, manufacturers use modern sensors that allow you to send a signal to the central control panel. However, the simplest systems are designed only to notify the host through the means of mobile communication. The main thing in this system is the type of sensor. The most effective option is considered to be a video camera with a motion sensor and night vision, which allows monitoring the observation area and, if necessary, giving the appropriate signals to the user, regardless of the time of day.
Camera features with motion sensor
The main difference between such models isrecording capabilities based on motion detection. This means that in the normal state the camera is inactive, and its activation begins only at the moment when an action begins to take place in the observed field. The benefit of such devices is to save space for recording. In order not to use capacious servers for video, the developers proposed to optimize the recording process itself, initially saving the equipment from processing unnecessary data. At the same time, a modern digital video camera with such a sensor can have memory cards of 32 GB or more. Storage capacity can be determined not only by the time the device is active, but also by the recording quality.
Analog and digital models
It is considered that the fashion on motion sensorsoriginated in the period of popularity of digital equipment. But this is not entirely true, since analog cameras were previously equipped with similar detectors. Another thing is that such equipment has problems in compatibility with recorders when it is necessary to send a signal. Today, a more popular digital video camera, equipped with motion sensors. Such models have the ability to inform the owner about the presence of movement in the protected area. The lack of such a function in analog cameras is also a serious disadvantage. There are other differences, but they all boil down to the fact that digital devices are more technological and functional.
So, the latest models of IP cameras providethe owner has ample opportunities for communication over the Internet. As a result, even sending SMS-messages at the time of fixing the action becomes less relevant. For example, a modern video camera with a motion sensor can use e-mail and other channels to notify the host, which increases the reliability of the security system.
Main characteristics
Great value in efficiency and qualityThe operation of such cameras has the resolution and the number of megapixels. Standard devices use a 5-megapixel matrix, which provides recording in 1280x720 format. Next, pay attention to the ability to record sound. This function is absent in many models, but the presence of a microphone with high-quality recording significantly expands the capabilities of the equipment. It has already been noted that a video camera with a motion sensor can be equipped with memory cards. Their volume varies on average from 32 to 64 GB - this is sufficient if the equipment is planned to be operated with short periods of activity. Also an indicator of the high efficiency of the camera is the possibility of pre-recording. Using this function, the device saves the video material not from the moment the activity is recorded in the field of view, but buffers a few seconds before the start of the movement. This interval varies on average from 3 to 10 seconds.
Night vision
Use infrared illumination andthermal imagers allows you to provide night vision. This addition is organically combined with motion sensors, which allows you to expand the functionality of the equipment. By the way, depending on the technological performance, such models can be effective in different conditions. For example, a light-sensitive video camera with a motion sensor can capture objects in the dark only under the condition of at least minimal illumination. In turn, thermal analogs are independent of light and able to work, focusing on thermal radiation. As technology progresses, hybrid models appear, but they are not so common because of the high cost.
Mini-camcorder with motion sensor
Such devices are the best option.if you want to implement covert surveillance. In size, they rarely exceed the size of a matchbox, which provides tremendous opportunities for an invisible installation. Also, mini-devices do not lose to full-size counterparts in performance. For example, the latest models allow recording in FullHD format and are equipped with infrared LED-backlit for night vision. However, in terms of autonomy, a mini-video camera with a motion sensor shows less high rates. On average, the recording time of the battery model is 1-2 hours.
Outdoor models
These models are presented the toughestrequirements in terms of mechanical protection of the hull. The material must resist physical impacts, precipitation, wind, and at the same time maintain performance. In some cases, it is recommended to pay attention to the means of additional protection - this may be, for example, an anti-corrosive coating or an anti-vandal case. Also consider the control method. In most cases, an outdoor video camera with a motion sensor includes a remote control. This allows you to control the operating parameters of the device at a distance, although the change of memory cards still have to manually.
How much is?
The simplest models are estimated at 3-4 thousand rubles.These can be outdoor devices with basic options and a set of essential tools for communication with other equipment. More advanced mini-cameras are estimated at 6-7 thousand rubles. But this applies to advanced devices that provide both night vision and high quality recording. In this case, a hidden video camera with a motion sensor, which notifies the owner through digital communication technologies, can cost 10 thousand rubles. This is the most advanced type of IP cameras.
Conclusion
The presence of various sensors in the systemsTracking has long become mandatory in security systems. They not only provide benefits in the form of saving space on servers, but also optimize the monitoring process itself. In particular, a video camera with a motion sensor allows the owner to immediately pay attention to the moments where the action takes place. At the same time, models of this type are organically combined with other functional capabilities of surveillance systems — these are night vision devices, wireless technologies, and the ability to transmit messages over several channels. However, there are disadvantages of cameras equipped with motion sensors. So, if the system is programmed to send an alarm at the moment the detector is triggered, then any accidental action will unnecessarily disturb the owner in vain. The usual situation is when a room camera with such a sensor is triggered by the movement of a cat or dog.
