Topic: Tech & EngineeringApplications

Last updated: May 24, 2019

RenesasMicrocontroller: TheRENESASMCUisTrueLowPowerPlatform(aslowas66a/mhz, and0.

57aforRTC+LVD), Supplyvoltageis1.6Vto5.5Voperations,16to512KbyteFlash,41DMIPSat32MHz,forGeneral Purpose Applications. LEDindication: • Power ON/OFF: When external power supply to controller green led will glow and it is show power is given to unit.

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• OL (RED): Over Load Fault. When current is ?owing from circuit beyond settable range this led will glow. • SMS/CALL(RED):CommunicationIndicationWhenusercallorsendingSMStounitthisled will automatically ON • NETWORK(RED):NetworkIndicationwhenSIMcarddetectandmobiletowerrangeisthere this led will glow. Max232IC: Max232 IC is in SMD Package so it is very small in size due to that it requires less space. The11Max232 is used to transmit the Pc data to the Microcontroller and also from controller to Pc. It is also used to shift the voltage level low to high a vise a versa.

The MAX232 is a dual driver/receiver that includes a capacitive voltage generator to supply TIA/EIA-232-F voltage levels from a single 5-V supply. Each receiver converts TIA/EIA-232-F inputs to 5-V TTL/CMOS levels.CurrentTransformer(CT): This Device is mainly used to monitor the Current .The CT is used to set the Starting Current of the Motor.

A current transformer is an instrument transformer, used along with measuring or protective devices, in which the secondary current is proportional to the primary current and it differs from it by an angle i.e. approximately zero. Current transformer supply the protective relays with current of magnitude proportional to those of power circuit but suf?ciently reduce in magnitude.

Input current for CT is 5A and output is 5mAGSMModem: The GSM modem of Quectel M95used since it Has very Good Range an Accuracy As compared With SIM 300 and SIM 900. M95 is a Quad-band GSM/GPRS engine that works at frequencies of GSM850MHz, GSM900MHz, DCS1800MHz and PCS1900MHz. The M95 features GPRS multislotclass12andsupportstheGPRScodingschemesCS-1,CS-2,CS-3andCS-4. Withatinypro?le of 19.9mm 23.6mm 2.65mm, the module can meet almost all the requirements for M2M applications, including Vehicles and Personal Tracking, Security System, Wireless POS, Industrial PDA, Smart Metering, and Remote Maintenance and Control, etc.

M95 is an SMD type module with LCC package, which can be easily embedded into applications. It provides abundant hardware interfaces like Audio and UART Interface. Designed with power saving technique, the current consumption of M95 is as low as 1.3 mA in SLEEP mode when DRX is 5. M95 is integrated with Internet service protocols, such as TCP/UDP, FTP and PPP. Extended AT commands have been developed for you to use these Internet service protocols easily.PowerSupply: WhenwegivesinglephasesupplytoGSMbasecontrollerforexternalpowergreenledwillglowand it is show power is given to unit.The primary function of power supply is to convert electric current from a source to the correct voltage and frequency to power the load.

Other function that power supplies may perform include limiting the current drawn by the load to safe levels. We required 3.3V power suopply for Renesas microcontroller, 4V for audio IC (P89170), and 12V power supply for relay.

When we give single phase supply to GSM base controller for external power green led will glow and it is show power is given to unit.


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