Body-worn cameras are small in size Most body worn cameras are wearable with built in recording system storage. Majority if not all BWC are designed to be worn on the torso. Some come with a clip others have a magnetic clip. They can also be built onto the helmet or into the glasses.
From law enforcement to military and journalism to covert surveillance, body worn camera can have multiple uses that can serve the society.
For law enforcement, body-worn cameras are used to record interactions with the public and also to collect evidence at crime scenes. They augment not just the officer’s accountability but also ensure that the police officer is able to collect crucial information that can be held as proof. Several studies have shown that complaints related to interactions with police officers reduced and the use of force and assault on officers also showed a declining trend with its use. Body worn cameras can have great utility for creating situational awareness and have often been termed a smart solution to eliminate the problems surrounding law enforcement.
Keeping this in mind, the use of body-worn cameras has increased in this field, making it an indispensable device for police officers. Nowadays, they have also become popular for security guards. While on duty, they might have to report problems to their supervisor and the validity of such issues can be corroborated by the recordings. But apart from assisting law enforcers, it also protects civilians against power abuse.
Security companies the offer armed and unarmed guard service have been deploying BWC for their agents. It has helped companies analyze employees work performance when it comes to resolving disputes. BWC have also helped security guard supervisors instant live monitoring via wifi to guide their guard’s handling of situations better.
Deploying body cameras can aid in the de-escalation of anti-social behavior and assaults. It can also assist a well-guided evaluation of the officer’s performance. A study by Cambridge University revealed that police equipped with body-worn cameras receive 93% fewer complaints by the public. Police Department of Rialto (California) reported a 59% reduction in incidents where force is used by police officers.
Despite these positives, there are some concerns associated with body-worn cameras, including that of privacy of those who are being recorded. It is often argued that it flouts the privacy laws and therefore, their use needs to be regulated and kept under stringent check.
In 2010, police officers at the University of Maryland deleted video footage that could have served as a proof for the accusation that they were involved in beating students. Features of these devices and policies should strive towards making the evidence indisputable to make it serve its most essential function.
Body worn cameras, like any other devices, can either be misused or can be utilized in a way that serves justice to all. Proper policies and guidelines, along with efficient technology and training need to be used to brought into play to reap the benefits with minimal pitfalls.
Like every year ISC west the biggest security exhibition in the United states is next April. Many if not all manufacturers and distributors have low expectation for their return on investment. Re-sellers, integrator, dealers or installers typical attendees of ISC west showing little or no interest in attending year by year.
ISC west security show was the annual release of new technology for manufacturers. Allowing integrators, dealers, and resellers to connect with new vendors and find the next new niche product to offer their customers. However, with the presence of internet lots of things has changed.
After years of attending, attendees have come to realize that it is possible to save time and money by searching for products online. Even sourcing for trustworthy manufacturers overseas such as China, has become easy with the presence of Alibaba and other B2B marketplaces.
The displaying of new technology with online video marketing have been more effective to attract new leads for manufacturers. Through online marketing much higher exposure of the new products can be achieved in a shorter period of time compared to exhibits. With the advancement in internet marketing direct targeting to buyers can be done. Less time, better return and off-course lower marketing costs compared to exhibiting at the shows.
Go around the booths at the ISC west and ask any exhibitor, they all agree that the return compared with the three day outrageous cost is not worth it. However, many manufacturers end up coming back every year just to show presence and name recognition . Returned exhibitors are the bigger public companies in the market. Companies that have a lot of public money to spend. But not all exhibitors have that money available.
Year by year the count of exhibiting distributors and small manufacturers is dropping. They realized its not beneficial as there are too many companies to compete against, along with the hefty price of exhibiting and the continuous dropping of new attendees. That is why you will see many new companies popping online and not see them at the exhibits.
Not to sound all negative about exhibiting at trade shows, it definitely has its own positive side. Meeting potential business partners face to face is more rewarding than email conversations. Touching and demoing the products yourself provides you with better experience with better decisions. However, the question that is always asked, is it worth spending all this money and time? After doing your research online for a couple of hours can’t you just request for manufacturer reps to pay you a visit and demo the new products. Yes, off-course you can and that is why many other integrators/re-sellers and dealers are opting out from attending the exhibits.
The isc west show and many other exhibits and will continue to be available for the coming years. However all signs and predictions are indicative that they will not last for too long. With time, attendees count will keep dropping. Exhibitor counts will follow and keep dropping. Until there comes a point where the big public companies supporting those shows realize its not worth it. ISC East show is ahead in that sense. Its already at a point where it can hardly last for a couple more years.
Law enforcement body worn cameras have become an important device for police officers to carry. Not only to protect police officer but also to protect civilians from police over power abuse. Body worn cameras have also helped capture footage during unforeseen conditions. Body worn cameras have lifted a lot of liability off of police officers from false civilian accusations. Generally speaking body worn cameras have helped tremendously bring justice to both civilians and the police force.
Body worn cameras have become popular for not only the police force but also to security guards who protect private facilities such as shopping centers, department stores, malls, supermarkets etc. Security guards have a strenuous task of walking miles security private properties. During their walk they run into multiple problems that requires reporting back to their superiors. The validity of those reports are now being validated against video recordings captured from body worn cameras.
Body worn cameras are small palm size or smaller cameras that can record video on built in memory ( SD cards ). They can record round that clock, manually or on motion. All that can be pre-configured with password protected at different user levels if needed, to avoid police officers or security guards from tampering with video recordings.
Body worn cameras depending on quality have many different video resolution recordings and image snapshots. They can range from 2 megapixel all the way to 50 megapixel resolution. They can also be equipped with infrared led around the camera to get night footage. Newer body worn cameras have been developed with sony starvis or starview technology to see full color at night.
Body worn cameras have microphones built in to record audio in sync with video footage. Video recording alone can be interpreted differently by different people. Thus, audio recordings are as important as video recording to provide proper insight of the recorded incidents.
Since most of the recorded audio/video footage will be used for evidence or archiving, most BWC are dated, timestamped along with exact GPS coordinates. The combination of all those features have made BWCs a powerful tool of undeniable evidence benefiting the safety of all members of the community.
Since body worn cameras are mostly recording while in motion most of the times, BWC’s are equipped with software based image stabilizers to minimize video and photo vibrations while recording.
Different cities have different or no specific policy standards for body worn cameras. A detailed score card of body worn cameras was issued by the leadership conference. For instance in the report the city of Dallas police department does not make the policy publicly or readily available, does not prohibit officers pre-report viewing, does not make footage available to individuals filing a complaint and limits bio-metric searching of footage. But does however prohibit from tampering with cameras and footage, as well as unauthorized distribution of BWC footage. The reports provide a wide comparison between major cities worldwide. Further research is necessary to find optimal policies for regulators to standardize the use of Body worn cameras. Here is a link to Dallas Police Department Body Worn Cameras Score Card
There are many factors involved in the use of body worn cameras that make them important to be regulated. Besides the indisputable argument of their importance of use providing law enforcement oversight, accountability and liability protection, it does record civilians randomly in public whom are are protected by privacy laws. Flagged or UN-flagged video footage recordings can be saved for years with the absence of appropriate retention data policies which makes unregulated body worn camera usage a concern.
Body worn camera’s footage are readily available to law enforcement, prosecutors but have limited access to recorded victims or their attorneys. Police have full control of the video database sharing selectively at their will what they find appropriate at specific times. Which defeats the whole purpose of having body worn cameras.
Since some local law enforcements can make their own decisions on what footage to keep, delete or what to use, that circumvents the oversight the cameras are meant to provide. Police officers at University of Maryland are required carry body worn cameras. In 2010 they had the privilege of deleting video footage of their accusations of beating of students. Other incidents in other states police officers claimed that body worn cameras were faulty and were not recording at the time of incidents. Even if footage exists some local police law enforcement’s the right to review the video recording to recall the incident and tailor their own story matching the footage.
Body worn cameras are important tools that can help bring justice for all. Like any other tool, proper training, guides and optimal policies are mandatory for accountability and proper use.
Majority of professional security camera installs are wired. Plus wireless security cameras technology has only been recent. Most of wireless security cameras are being used at residential homes.
How far can a wire be ran and still get a video signal from security cameras all depends on multiple factors. Type of wire being used, camera voltage type (24vac or 12vdc) and camera ampere requirements. The main difference is the type of camera being used. IP Security cameras use network cable such as cat5e or cat6. Analog security cameras use coaxial cable.
Technically regular POE IP Security cameras have max limitation of 300 feet of network wire to still get a signal using pure copper wire. However, it is always safer to estimate a max of 250 feet because the type of wire being used cannot always be guaranteed to be pure copper, to the contrary most wire in the market nowadays are copper clad aluminum CCA or copper clad steel CCS wire. CCA and CCS wires have lesser performance than pure copper.
CAt5e cable used for ip cameras
Siamese cable with power
2M technology developed a network video recorder NVR that supports extended POE. Extended poe ip security camera feature extends the wire from 300ft to 750ft using pure copper wire. However it has been tested to run up to 600 feet using CCA wire. Extended POE ip cameras work only with 2M Technology network video recorders for extended wire distance.
Turret IP Security Camera with extended POE
There are two different types of security cameras, one power by 12vdc others by 24vac. However, 90% of analog security cameras nowadays work on 12vdc. Power voltage drops with distance. For more details about voltage drop refer to our security camera voltage drop blog.
Analog security cameras transmit video via coaxial cable RG59. HD Analog video signal transmission differ based on the camera signal type.
Security Camera Video Signal Distance.
( Tests were based using pure Copper Wire)
TVI security camera using coaxial cable can go up to 1600 feet.
TVI camera signal using cat5e twisted pair with passive balun video signal can run up to 700 feet.
CVI SEcurity camera using coaxial cable can to up to 1300 feet for 720p resolution and 1600 feet for 1080p resolution
CVI camera signal using cat5e twisted pair with passive balun video signal can run up to 650 feet.
AHD security cameras using coaxial cable can run up to 1600 feet
AHD camera signal using cat5e twisted pair with passive balun video signal can run up to 500 feet.
Its not hard to install a security camera system by yourself. If its the first time for you it would take a little bit longer. The hard part of installing a security camera system and most time consuming is usually running the wire.
There are two different kinds of security camera systems. One them is IP security camera system the other is analog security camera system. Both camera system require pulling wire. The IP camera system would require running a network wire such as cat5e or cat6. The analog security camera system requires pulling siamese coaxial cable which has coaxial cable plus a pair of 2/18 gauge electric wire.
Whats the difference in siamese coaxial cable and cat5e wire?
Coaxial Siamese cable used for Analog HD Security Camera System
Network Cable for IP security camera systems
Bnc Twist On Connector goes on coaxial cable
RJ45 connectors for ip camera goes on cat5e or cat6 network cable
Analog Security Camera Flying Power Lead – connects between power supply and siamese cable
Male Power Lead that connects to camera
As seen in image above siamese coaxial cable has two wires zipped together. One of the wires is the coaxial cable the transmits video from the security camera to the digital video recorder (dvr). The other wire is to transmit power from the power supply to the camera. The coaxial cable requires bnc connectors on both sides require connectors on both sides to connect the camera and
BNC connectors plug in to the back of the camera and the back
of the dvr. Similarly the power red and black pair requires flying power leads.
The male flying power lead connects to the back of the camera and the female
power lead connects the power adapter. The power adapter is connect to the
electric outlet. Installing both the BNC connector and power lead is not hard,
its fairly simple.
As seen above the image of network cable there are 4 pairs of
small 22 gauge wires in one cable. The camera uses one pair for transmitting
video signal and another pair for transmission of power over network called POE
( Power over Ethernet) . The network cable cat5e or cat6 both use rj49
connectors. Most not all IP Cameras power by POE. Power is provided and pushed
by the network video recorder on poe switch. Installing the rj49 connector on
network wire is harder than installing the bnc connector and power lead on the
Most hd analog security cameras run on 12 vdc 1 amp or less. Pan tilt zoom camera require more ampere and typically run at 3 amperes. For analog hd security cameras a central power supply is required if you are going to install more than 4 cameras. As you can see the images below of the central power supply and the power plug in. The central power supply is a little more involved and you must be very cautious when using as high voltage 120 vac runs through on of the block terminals. The 4 camera plugin adapters are like laptop adapters much simpler to install and use.
This short simple explanation of how security cameras systems installation gives you a brief idea on what you are getting yourself into. Keep in mind when you purchase a security camera system to purchase it from a company who offers technical support post sales. Buying off the shelf a security camera system from a store and not getting the support your need will be difficult.
If you have any further questions feel free to call us at 1-877-926-2288
Central power supply to provide power to hd analog security cameras required for installing more than 4 cameras
power supply that can power up to 4 analog security cameras
Power supply for installing a single security camera
If you are shopping for the above products here are the links
Many customers get confused on the difference between the most popular analog video signals in the security camera market. The most popular are TVI, CVI, AHD, CVBS and SDI.
CVBS is composite video base band signal for the security camera market world this is what is considered original analog standard definition video cameras. Those Analog security cameras are not high definition and capped off at 960h 700 analog tv lines resolution.
SDI stands for serial digital interface. SDI is a standard used for the transmission of digital video signals over coaxial cable. When CVBS video signals maxed out at 960h, engineers looked for alternative signal methods to transmit high definition video 1080p over coaxial cable. SDI technology has been in existence in the media tv market for a while. Security camera manufacturers started developing image sensors that would utilize SDI video transmission signals to get HD signals over coax. A problem was noticed when security camera cable runs would exceed 300 ft. SDI’s signal transmission was limited to max of 300 feet. While 300ft was sufficient for media tvi signal transmission soon industry came to realize that it was insufficient distance and new technology must be deveopled.
TVI is high definition transport video interface. Its a transport technology that transmits high definition analog video over coaxial cable. This standard was released in 2014 and has become the most popular analog HD security cameras technology in the United States. TVI was first adopted by big manufacturing companies such as Hikvision.
CVI is high definition composite video interface. Very similar to TVI but with a different digitized transmission signalling compared to TVI. CVI was adopted by famous chinese manufacturer Dahua. CVI is not a very popular option in the United States. TVI have controlled the security market in terms of HD analog security cameras. CVI is very popular in China.
AHD stands for Analog HD. Similar technology to TVI and CVI in theory, differs by video transmission signal digitization. AHD technology was adopted by Korean image sensor manufacturers such as Nextchip. AHD security cameras video transmission is popular in far east Asia such as Korea and Japan. AHD did not pickup in the United States as much as TVI.
Since 2014 there has been a competition between manufacturers to select one specific analog security transmission technology and go with it. At the end of the day TVI, CVI and AHD provide extremely similar image quality and features. All three technologies have very close prices as well. In 2017 CMOS image sensor manufacturers started embedding DSP’s in their image sensors that can support All in one or 4 in one (TVI,CVI,AHD,CVBS). Digital Video recorder manufacturers started following pursuit and manufactured DVRs that support all four analog signals.
Nowadays a buyer does not have to worry about what video signal to purchase as majority of analog security cameras are supportive of all 4 hd video signals.
Toggle Joystick that come on analog camera to toggle which video signal to use
All 4 video signals can support the following
HD 2 MP, 4 MP, 5 MP, even 4k
Transmit video up to 1600 feet
Wide Dynamic Range
Digital Noise Reduction
Starlight low light night vision
Before doing any purchase of security cameras you should contact a security consultant that can provide you with advice with their experience knowledge on cameras at no cost.
Explosion proof security cameras are mandatory on many industrial locations. Explosion proof rated cameras and housings Such as coal mines, chemical plants, oil and gas fields etc. Explosion proof ratings are classified differently depending on surrounding gases present, the amount of time those combustible gases are lingering in the area, the flammability levels of those gases, the intensity of the gases and so on.
Explosion proof camera housings are made from stainless steel. Stainless steel consists of chromium, nickel, carbon and manganese. Stainless steel 304 is a popular alloy for its durability, appearance and resistance to corrosion. However in situations where there might be acidic material, industrial solvents or highly concentrated saline environments present, 316 stainless steel would be required. 316 stainless steel has the same metal alloys as 304 along with an alloy called Molybdenum that would make the stainless steel a super power with the ability to withstand very harsh environments. 316 explosion proof security cameras are 20 to 50% more expensive, in some conditions there is no better option than using 316 explosion proof stainless steel.
Table of stainless steel difference in components between 304 and 316 stainless steel
Explosion proof security cameras can either be ip cameras or analog cameras. Explosion proof ip cameras are popular in 2 megapixel resolution 1080p. Similiarly, 2 megapixel 1080p analog TVI/CVI/AHD cameras are available. There has been an increase in demand for 4 megapixel explosion proof ip cameras.
There are two ways to buy an explosion proof security camera. Either by purchasing the full solution which includes the explosion proof housing along with camera built in. Or by purchasing an explosion proof housing for a camera you might have already picked up. Those types of housings can be with a pan tilt zoom or just a fixed housing.
Pan Tilt Zoom Explosion Proof Camera
There are two main specs to consider when purchasing an explosion proof housing. One is the explosion proof classifications required. And the other is internal dimensions of the housing to fit the security camera that would go inside the housing. When estimating the internal dimensions of the explosion proof housing you must carefully make sure there is extra space for the connectors to connect on the back of the camera and enough space for the cable.
Explosion Proof Housing
There are many occasions where a customized explosion proof housing for an existing camera is required. Sometimes the cameras required might not be just for security, such as using Sony or canon high resolution high frame SLR cameras to take photos close to launching rocket pad. Those cameras with large lenses tend to be bigger than any existing explosion proof housing. The explosion proof housing helps protect the camera and can be reusable. Explosion proof housing has been proven to be an effective option.
2M has helped many clients customize explosion proof housings based on their requirements. Connecting clients with great explosion proof specialty manufacturers.
There are multiple styles of explosion proof security cameras that can be purchased off the shelve and most likely are in stock. Below is a list of most popular styles of explosion proof security cameras.
There are lot a of industrial locations that require explosion proof rated housings and security cameras. Those locations might have hazardous gases, chemical or vapors that regular standard housing would not be able to withstand or might cause a an explosion due to electrically charged components within cameras. Cautious must be taken at plants, factory or locations that produce by-products of flammable gases, flammable liquid–produced vapors, combustible liquid–produced vapors, combustible dusts, or ignitable fibers present in the air in quantities sufficient to produce explosive or ignitable mixtures. Electrical equipment low or high voltage that must be installed at such classified locations should be specially designed and tested to ensure it does not initiate an explosions or fire.
Engineers along with policy regulators defined technical specifications to identify features of electrically charged devices that need to be protected from surrounding environments to avoid any initiation of an electric charge. For example a simple house light bulb that emits a small electric arc that might seem harmless for a house would be quite explosively dangerous for non regular atmospheres which have flammable vapors.
Historically, the requirement for explosion proof rated devices started when at least two explosion related coal mines were attributed to an electric bell signaling system. An electric arc by the bell system sparked the mine which caused a huge explosion killing many miners. High levels of methane gas and coal dust in coal mines make mines hazardously dangerous to have any minute electric arcs.
Hydrocarbons, hydrogen and ammonia are common by-product gases product by industrial factories. Those gases are highly flammable and require explosion proof equipment. Below are different explosion proof classifications which depend on environment and specific safety hazard requirements.
Class I, Division 1 area encompasses the combination of Zone 0 and Zone 1 areas.
Zone 0 locations of high concentrations of combustible gases, vapors, dust or liquids always present for long periods of time during operations.
Zone 1 are locations which might have present at any time combustible gases, vapors, dust or liquids during normal operations.
Class I, Division 2 or Zone 2 are locations which normally do not have combustible by-products during normal operations and concentrations might be present under abnormal conditions, such as sudden leaks or so. As a general guide those abnormal conditions should not exceed 10 hours a year.
Non-hazardous or Unclassified locations are classified as neither Class I, Division 1 or Division 2; Zone 0, Zone 1 or Zone 2; or any combination. For example the use of aerosol sprays in commercial or residential areas. Aerosol sprays might have flammable gases, they are still considered very low risk of causing and explosion.
Explosive dust area classifications
An explosion of dust at this grain elevator in Kansas killed five workers in 1998.
There was always a need for security cameras that offer clean color picture at night. Conventional infrared night vision security cameras have been in existence for over 20 years now. While they have served their purpose for the time being new requirements have pushed engineers at Sony to develop image sensors that can pickup color at extremely low light.
Infrared led lights with low light image sensors can only offer black and white night vision images. While night vision cameras give a sense of whats going during video playback, even with high resolution cameras, face recognition and specific details are not that clear. Black and white images have a lot of noise pix elation that remove the important details of video footage. Furthermore, a lot of infrared cameras have reflection issues that cause a halo white round circle around the image destroying the whole image quality at night.
Halo effect of infrared light using conventional security cameras
Sony created STARVIS a back-illuminated pixel technology used in CMOS image sensors for surveillance camera applications. It featured a sensitivity of 2000 mV or more per 1 µm2 (color product, when imaging with a 706 cd/m2 light source, F5.6 in 1 s accumulation equivalent), and combined high picture quality in the visible-light and near infrared light regions within a frame .
Starlight Provides Optimum Design for Surveillance Cameras
Starvis provided extended visible light range that offer a wider range of colors during the night at extremely low light. Extremely low light meaning one starlight 0.0001 lux in total darkness is enough light to provide color at night.
Back-illuminated CMOS Image Sensor
Not only front light image sensitivity was optimized as well as back light illumination compensation was optimized to bring in back light colors to the picture. Lowering noise reduction and provide much better clarity.
What is the difference between starlight and starvis?
Starvis technology is proprietary to Sony. Starvis name came from two words visibility under one starlight. Other manufacturers started adopting this technology and manufacturing their own starlight cmos image sensor. Since starvis is trademarked to Sony, other manufacturers simply used the name starlight for their security cameras. There is slight difference between starvis and starlight. Starvis has better lux rating and night performance, with high color quality. Its hard for the novice to detect such a difference. Starvis sony cmos chipsets are higher in price than starlight security cameras, however it all depends on brand.
The price of conventional infrared night vision cameras compared to starlight security cameras is very small about 10% more. Security camera prices nowadays are fairly inexpensive. Thus it is worth spending a little more money on getting starlight security cameras for getting better color clarity at night. h