Modern security systems using GSM technology usually provide for the inclusion of video cameras in the system. But these are not just cameras with the ability to capture a “picture”, but devices that are able to respond 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 owner through mobile communications. The main thing in such a system is the type of sensor. The most effective option is a video camera with a motion sensor and night vision, which allows you to control the surveillance area regardless of the time of day and, if necessary, give appropriate signals to the user.
Motion sensor camera features
The main difference between these models is the ability to record motion detection. This means that in the normal state the camera is idle, and its activation begins only at the moment when an action begins to occur in the observed field. The benefit of such devices is to save space for recording. Not toto use capacious servers for video material, the developers proposed to optimize the recording process itself, initially relieving 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. The amount of storage can be determined not only by the time the device is active, but also by the quality of the recording.
Analogue and digital models
It is generally accepted that the fashion for motion sensors arose during 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 registrars when it is necessary to send a signal. Today, a digital video camera equipped with motion sensors is more popular. It is these models that 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 drawback. There are other differences, but they all come down to the fact that digital devices are more technologically advanced and functional.
Thus, the latest models of IP cameras provide the owner with ample opportunities for communication via the Internet. As a result, even sending SMS messages at the time of fixing an action becomes less and less relevant. For example, a modern video camera with a motion sensor can use e-mail and other notification channels to the owner, which increases the reliability of the security system.
Basicspecifications
The resolution and the number of megapixels are of great importance in the efficiency and quality of the work of such cameras. Standard devices use a 5-megapixel matrix, which provides recording in 1280x720 format. Next, you should pay attention to the possibility of recording 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 enough if you plan to operate equipment 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 video material not from the moment of fixing activity in the field of view, but buffers it a few seconds before the start of movement. This interval varies on average from 3 to 10 seconds.
Night vision capability
The use of infrared illumination and thermal imagers allows for 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 design, 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 if there is at least minimal illumination. In its turn,thermal imaging analogues are independent of light and are able to work, focusing on thermal radiation. As technology develops, hybrid models also appear, but they are not yet so common due to their high cost.
Mini Motion Detection Camcorder
Such devices are the best option if covert surveillance is required. In size, they rarely exceed the dimensions of a matchbox, which provides great opportunities for an installation invisible to the outside eye. Also, mini-devices do not lose to full-size counterparts in performance. For example, the latest models allow you to record in FullHD format and are equipped with infrared LED-illumination for night vision. True, in terms of autonomy, a mini-camcorder with a motion sensor shows less high performance. The average recording time for a battery model is 1-2 hours.
Outdoor models
The most stringent requirements are imposed on such models in terms of mechanical protection of the case. The material must withstand 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-corrosion coating or an anti-vandal case. You should also take into account the method of control. In most cases, an outdoor video camera withmotion sensor includes a remote control. This allows you to control the operating parameters of the device from a distance, although you still have to change the memory cards manually.
How much?
The simplest models are estimated at 3-4 thousand rubles. These can be outdoor devices with a basic option and a set of mandatory tools for communicating 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. At the same time, 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 tracking systems has long been mandatory in security systems. They not only provide the benefit 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 is taking place. At the same time, models of this type are organically combined with other functionalities of surveillance systems - these are night vision, wireless technologies, as well as the ability to transmit messages over several channels. However, there are also disadvantages to cameras equipped with motion sensors. For example, if the system is programmed to send an alarm tothe moment the detector is triggered, then any accidental action will once again and needlessly disturb the owner. The usual situation is when an indoor camera with such a sensor is triggered by the movement of a cat or dog.
