Remote Data Transmission System
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Our company is dealing in the supply of remote data transmission system. The remote data transmission system which we offer retrieves measurement data and alerts mobile. The remote data transmission system is wirelessly and fully automated worldwide via e-mail and sms. Battery-operated remote data transmission system includes modern gprs modem too. With remotefox, consumers get a powerful remote data transmission system for worldwide, mobile, and wireless retrieval of measurement data. Avail the remote data transmission system from us in excellent packaging. about remote data transmission system : simply connect up to two data logging systems including your extension modules (universal sensors) directly to remotefox. Users receive the ollected measurement data entirely automatically and comfortably at regular intervals as e-mail attachments. Once on the computer, users can analyze the easurement data in the same way as if they were on-premise.and if you ever need your measurement data urgently, one telephone call and remotefox sends them to you immediately. In addition, remotefox is equipped with two independent alarm inputs for flexible and uncomplicated alerts via sms or e-mail. the complete system works independently of the power grid and is operated with eight normal baby-type batteries (please order as well). This way it can send hundreds of e-mails for over a year (depending on data logger memory). If desired a power supply can be connected. Naturally, you will be alerted should power be down or batteries low.configuration of remotefox can be done easily and smoothly using the universal softfox software on microsoft windows® 98, nt, me, 2000, xp, vista, or 7. With the help of this software you can configure the frequency of the data transmission, the e-mail recipients, and cell-phone numbers for sms alerts, a delay for the alarm inputs, the smtp server to use, and much more. features : fully automated transmission of measurement data via e-mail start time and data transmission frequency freely configurabletwo complete data logger systems plus universal sensors can be connected e.g. 2 x thermofox universal stations incl. 2 x multi-sensor modules for 2 x internal as well as 20 x external sensors two inputs for e-mail and/or sms alarm (incl. Alarm delay)unscheduled (asynchronous) data retrieval triggered by telephone call (with power supply)up to 10 x e-mail recipient addresses and 10 x cell phone numbers can be defined high reliability as a result of alerts, status led and system test on location via magnetflexible configuration possible with the optional softfox analysis softwarecrystal oscillator controlled real-time clock and real-time calendarpower supply using standard 8 x type "c" baby batteries (please order as well) optionally available regulated 12v - power supply for continuous operation of the systembattery capacity sufficient for up to 100 x transmissions with 64,000 readings eachvarious sim cards with gprs internet access can be usedspecial antennas available upon requestdimensions 60 x 150 x 100 mm (hxwxd), approx. 300g plus batteries
Infrared Communication System
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Infrared Communication System is a device for I/R audio communication through transmitter and receiver up to a distance 10 meters. Infrared remote control devices are abundant in today's gadget-filled world. From the television and video recorder, through the Hi-Fi and on to the garage door that thankfully opens remotely on a rainy day, a remote controller of one form or another is never far from reach. Why use infrared light to send the control signals? Two reasons in particular stand out. The first is that the diodes used to emit infrared light are quite inexpensive and readily available. The second is the fact that infrared light is at a wavelength outside of the spectrum of visible light – so we can point and shoot our controllers and not get blinded in the process! So how exactly does infrared remote control work? At the most basic level, the remote controller contains a transmitter circuit, part of which will be an Infrared Light Emitting Diode (IRLED). When a key is pressed on the controller, the command is sent as an IR signal to the device which you are aiming the controller at. The device being controlled will have a receiver circuit, part of which will be a photodiode with which to detect the IR signal and convert it into an electric current.That's a very simplistic view of IR RC communications. However, when you factor in background infrared "noise" emitted by other heat-generating objects and multiple IR remote-controlled devices located in close proximity to each other, things quickly become more complicated. With simple infrared light, there is now potential for the command not getting to the receiver at all, let alone the receiver in the intended device. Using this circuit, audio musical notes can be generated and heard up to a distance of 10 meters. The circuit can be divided into two parts: IR music transmitter and receiver. The IR music transmitter works off a 9V battery, while the IR music receiver works off regulated 9V to 12V. Fig. 1 shows the circuit of the IR music transmitter. It uses popular melody generator IC UM66 (IC1) that can continuously generate musical tones. The output of IC1 is fed to the IR driver stage (built across the transistors T1 and T2) to get the maximum range. Here the red LED (D3) flickers according to the musical tones generated by UM66 IC, indicating modulation. IR LED D1 and LED D2 are infrared transmitting LEDs. For maximum sound transmission these should be oriented towards IR phototransistor L14F1 (T3).The IR music receiver uses popular op-amp IC µA741 and audio-frequency amplifier IC LM386 along with phototransistor L14F1 and some discrete components (Fig. 2). The melody generated by IC UM66 is transmitted through IR LEDs, received by phototransistor T3 and fed to pin 2 of IC µA741 (IC2). Its gain can be varied using potmeter VR1. The output of IC µA741 is fed to IC LM386 (IC3) via capacitor C5 and potmeter VR2. The melody produced is heard through the receiver’s loudspeaker. Potmeter VR2 is used to control the volume of loudspeaker LS1 (8-ohm, 1W). Switching off the power supply stops melody generation.
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