Q: What is a Gate Operator
A: Gate Operator is the motorized device that functions to open a vehicular or pedestrian gate. The Gate Operator includes electric motor, motor reduction gear, wiring and control logic.
Q: What is a Telephone Entry System?
A: A Telephone Entry System (RTES)is typically a device that utilizes a phone line to establish a communication and control path between a gate and a residence. In residential applications, the most commonly used devices are “No Phone Line Systems”. These systems are installed in series with the house phone line and function by handling phone line switching when visitor initiates a call from the gate. The Residential TES must check to see if line is being used. If the line is not in use by the resident, the entry system disconnects the TELCO line and Rings into the house with a distinctive ring cadence. If the Line is in use, the entry system injects a pseudo “Call Waiting” Tone onto the line to notify the homeowner that a visitor is calling in. This will not disrupt a call in progress and allows the homemowner to know if a visitor is at the gate. The homeowner may then put his call in progress on hold to talk to the gate visitor. If the homeowner wishes to grant access to the visitor, it is done by pressing a digit on the inside phone keypad. This action should return homeowner to call in progress.
Commercial Telephone Entry Systems (CTES) typically require a dedicated phone line. This line may be shared between multiple entry systems if sytems are capable and programmed properly. In manned guardhouse applications it is recommended to have a seperate line for the Guard and the CTES. Commercial TES now typically support remote and local PC proramming of database. Commercial TES also normally support one or two Access Control Devices such as Card Readers or Bar Code readers. In addition, most CTES also can provide transaction logs of entry system use by authorized users.
Commercial TES function by dialing a seven to ten digit phone number of a name listed in the entry system directory. CTES of the past used paper non electric directories. With the integration of PC database management, the the paper directory has been effectively replaced with an electronic directory. The electronic directory allows visitors to scan for the name of the resident they wish to contact. The advantage of an electronic directory is that it can be managed remotely by authorized users. In the past, a person would have to physically replace the directory when a name changed or system programming was changed.
Traditional telephone entry units can be connected to an IP based dial tone generated by an ISP provider like Comcast or Xfinity. This sometimes involves rerouting or adding wiring to connect the new service to the old service.
As we move toward a more network heavy environment, we are moving away from traditional telephone entries to more sophisticated IP based call stations. These new call stations can provide video as well and voice transmissions.
Q: What is a Card Reader?
A: A card reader is a device that reads information that is embedded in a plastic card. The reader can either check an internal database, validate a card and grant access. This type of device is referred to commonly as a “Standalone” and is useful for low volume use or in locations that do not warrant a more complex system. The other type requires a “Host” controller and is referred to as a ” Dumb” Reader. Without the Host, the reader is useless. In many applications, the Host as a CTES or Access Controller. The Card Readers typically come in two flavors: Proximity and Magnetic Touch Card.
The Proximity reader utilizes a radio signal to communicate with the card. Short range proximity cards(Passive) do not have batteries in them and rely on the card reader to “excite” the card into transmitting it’s unique identity. Active cards typically rely on a internal lithium battery and allow for card reads from many feet away. Active cards are similar to the devices used in Toll payment systems on Toll Roads. Active Cards are usually less portable than Passive Cards because of the added size of battery and battery management circuitry. Active Card Readers usually can be identified because the Reader is typically a large Flat Panel array mounted above the lane of traffic. Active Readers are also typically used with a device called a loop & loop detector. The Loop & Detector function to keep the gate from opening if there is no car. The Loop is placed in a location that corresponds to where the car should be when it approaches the reader to gain access. It is possible in some parking layouts that the Active reader could pick up a car passing by the reader even if the car is in the secure area. The loop is intended to prevent unwanted opening of the gate if this is possible.
Active Cards are not typically used in applications such as door controls. Passive cards are more appropriate because the user normally should be directly near the door before the card can be read. This is to prevent inadvertent unlocking of doors.
Magnetic Touch Card readers rely on an array of magnetic sensors built into the face of the reader. This grid array of sensors then waits for a card to be placed on the face of the reader. The card has magnets embedded into the body of the card. The number printed onto the card corresponds to a unique placement of the magnets in the card. When the card is placed on the reader, the reader scans the array and produces a value that it checks against it’s internal database. With the advent of RFID cloning devices, the magnetic touch card does offer some additional protection.
Q: What is a Transmitter?
A: A Transmitter is a device that is commonly referred to as the following: Remote Control, Clicker, Beeper, Flipper, Etc. It is in fact a transmitter and typically transmits on one of the following Frequencies: 300, 310, 315, 318 and 390MHz. The transmitter functions by transmitting a digital code to a receiver that is installed in the Gate Operator or other location. The digital code transmitted depends on the manufacture’s design, Some are fixed, Others are Field Programmable and/or Code hopping. Common brands are : Liftmaster, Chamberlain, Linear, Multi Code, Allstar, Heddolf, and DoorKing.
Most transmitters Brand Specific. This means that you must buy a transmitter that is expressly designed for the receiver in your equipment. If you are unsure of your product brand, contact us. Universal transmitters do work, but many are very difficult to program to operate with your system.
Q: What can you do for me?
A: Just about anything. Well, that’s stretching it a bit. We’ve done everything from metal fabrication to embedded systems programming. Really, it boils down to whatever it takes to make the system work right and for a long time. Our Skills include, but are not limited to : Consulting, Engineering, Metal Machining, Fabrication, Electronics Design, Implementation and Support. We can take your idea and make it a reality. We are not afraid to try something new and we have a lot of good ideas and experience to make it happen.