TempMon

TempMon Harware Wireless GSM/GPRS TempMon Harware Wireless GSM/GPRS

    TempMon este un sistem de monitorizare a temperaturii in frigidere, congelatoare sau camere frigorifice. De fiecare data cand se masoara temperatura, sistemul decide daca este sau nu nevoie sa trimita o notificare prin SMS sau e-mail.

    TempMon isi propune sa fie tot timpul functional asa ca poate detecta automat senzori lipsa, baterii aproape consumate sau lipsa conexiunii la internet.

    In interfata web sunt afisate informatiile colectate de la senzori precum si diverse statistici care pot fi relevante pentru clienti.

    In dezvoltarea acestui proiect s-au folosit urmatoarele competente: Embedded C, ALTIUM Designer, PHP, MYSQL, JQuery, Bootstrap, REST)

     


Dozator de apa IoT

GSM/GPRS Bottle Filler Dashboard GSM/GPRS Bottle Filler











    Acest dispozitiv este capabil sa controleze toate functiile unui dozator de apa si transmite informatii si statistici despre modul de utilizare al acestui catre un server prin GPRS. Pe langa detectarea prezentei unei sticle cu ajutorul unui senzor de proximitate cu infrarosu VCNL4020, dispozitivul controleaza doua electrovalve, masoara cantitea de apa consumata si poate fi configurat printr-un buton si un display 16x2. Fiecare dozator de apa este prevazut cu un cititor de carduri RFID care permite identificarea filtrului de apa instalat pentru a impiedica refolosirea de filtre expirate.

    In dezvoltarea acestui proiect s-au folosit urmatoarele competente: Embedded C, ALTIUM Designer, PHP, MYSQL, JQuery, PHP Sockets

    

    

     


Tracker GPS

    Un dispozitiv proiectat pentru industria auto care este alimentat de la bateria unui autovehicul si transmite catre un server pozitia autovehiculului folosind modulul GSM/GPRS integrat.

GPS vehicle tracking device     Principalele module folosite de acest Tracker GPS sunt: un modul GPS Trimble Lassen iQ, un modul GSM/GPRS quad band Enfora GSM0308, un microcontroler Microchip dsPIC33FJ256GP710, o memorie flash seriala M25P80 si un accelerometru pe 3 axe LIS302DL

    Microcontrolerul comunica cu modulele GPS si GSM printr-o conexiune seriala (TTL si RS-232). Memoria flash si accelerometrul sunt controlate de microcontroler prin interfata SPI.

    Pozitia GPS este obtinuta de la modulul GPS la intervale prestabilite de timp si apoi este transmisa catre server impreuna cu alte informatii relevante (viteza vehiculului si timpul sistemului.

    In cazul in care nu poate fi stabilita o conexiune GPRS, dispozitivul va stoca pozitia si alte informatii relevante in memoria flash pana cand trimiterea datelor va fi din nou posibila. In cazul in care se detecteaza o decelerare semnificativa, sistemul deduce faptul ca a avut loc un accident si trimite SMS-uri de urgenta catre numere prestabilite.


Vehicle Fuel Level sensor reader

Vehicle Fuel Level sensor reader

    A device designed for the automotive industry that is used to measure the voltage or current output by a vehicle's fuel level sensor, calculate the fuel level and output the results through the RS-232 serial connection.

    The device consists of a dsPIC33FJ32MC202MM microcontroller from Microchip, a MAX4172ESA current sensor from Maxim, a MAX3222 RS-232 transceiver and a power supply based on a LM217 linear voltage regulator.

    Under normal operating circumstances, the voltage output by the vehicle's fuel level sensor measured through a resistive divisor by the microcontroller's ADC module. After the measurement and apropriate calculations (according to the sensor type, scale and method of calculation previosly set in the microcontroller by a computer terminal through RS-232), the resulted fuel level is output through the RS-232 connection.

    The power supply is based on the LM217, wich was used for its ruggedness (considering the automotive environment) and for its low price compared to other similar parts.  


ISO 9141-2 Reader

ISO 9141-2 Reader

    This device was designed for the automotive industry as a way to interface with on-board vehicle computers implemented using the ISO 9141-2 OBD2 standard.

    The main components used to build this device are: a dsPIC33FJ64GP802 microcontroller from Microchip, one npn and one pnp transistor that allow level translation from the OBD2 standard to TTL, an ICL3232 RS-232 interface from Intersil, a SN65HVD232Q CAN interface and a power supply based on a LD1117 LDO.

    The device is connected to the vehicle's OBD2 connector and it communicates with the on-board computer using its UART module and the extern level translator. Once the messages are read and interpreted, they are sent through the RS-232 interface or through the CAN interface, depending on the technology selected by the user.

    It was considered that the device will serve as an interface for a CAN Reader or for a telematics device that has an RS-232 port, in both cases the ISO 9141-2 Reader being supplied with a voltage of 5V or 3.3V, thus a simple LDO that converts the Vin to 3.3V was sufficient.  


vehicle navigator-rearview cam switch

vehicle navigator-rearview cam switch

    This device was designed for the automotive industry and is used to change the video input of a LCD monitor between the on-board GPS navigation system and a rerview camera.

    One of the inputs of the device is the power supply of the reversing lamp. It is connected to one of the inputs of a SPDT relay and when the vehicle is reversing the relay changes the video output from the navigation system to the rearview camera.

 


Food Industry Automation

Carbonator

    This device is used to combine carbon dioxide with a liquid by controlling two AC motors.

    The main components of the carbonation device are: an ATTINY24 microcontroller from Atmel, a floating level switch, two relays and the power supply.

    The microcontroller continually reads output of the floating level switch, and when its state changes to "empty" the motor that pumps the liquid is started by "closing" the corresponding relay. After a few seconds, the motor that pumps the carbon dioxide is started and both motors work until the floating level switch changes its state to "full".

    Additional care was taken when this board was designed because it is supplied with power directly form a wall socket and because of the high current consumption of the motors.

 


RF dongle and receiver

RF dongle and receiver

    The RF dongle and receiver system is capable of wireless communication between a dongle connected to a computer through USB and a receiver.

    The main components of the RF dongle are a PIC18F13 microcontroller with USB interfacing capabilities from Microchip, a nRF24L01 RF module from nordic, a PCB trace antenna and a power supply. The receiver is built along the same lines, but without the USB interfacing capabilities and with an RS-232 output.

    After receiving a certain command through the USB connection, the microcontroller powers-up the RF module and asks it to establish a link to the corresponding RF module on the receiver board. After succesfully establishing the link, data transfer between the dongle and the receiver begins.

 


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