Project Overview Stanley Access Technologies Dura Glide Slide - - PowerPoint PPT Presentation

Team 1812: Monitoring and

Correctness of BPMN Based Workflows (Stanley Automatic Doors)

Archit Singh, Jing Yang, Gregory Bibisi Advisors: Stanley Access Technologies- Jonathan Braverman, Jonathan Blake UConn-John Chandy

Project Overview

Stanley Access Technologies

• Dura Glide Slide Door System
• Aluminum panels that are driven with a motor and a belt system

Stanley needs a system to diagnose problems in the automatic doors

• Faults in sensors, wiring and other accessories
• Require us to design a system that detects these anomalies
• Microcontroller reports via bluetooth to an Android app to technician with recommendations

Team Objectives

Measure and communicate all relevant information

• Measure

– Use a current sensor to read the motor’s current, use the ATMega ADC

• ACS712

– Use the RS232 from the DCU to communicate with ATMega

• MAX3232

– Test the I/O’s of the DCU with multiplexer

• 16-Channel Analog/Digital Multiplexer breakout
• Communication

– Information fed into ATMega, then serial communication is set up with the Bluetooth – The App has to be able to receive and send messages to and from our system

Dura Glide Slide Door Setup

• 1. Motor 1
• 2. MC521 PRO Control Box

(DCU) w/ Terminal Plugs

• 3. SU-100 Motion Sensor
• 4. Solenoid Lock

Sensors

SU-100 Motion Sensor

• Unidirectional or bidirectional sensing

– Senses motion at a threshold of 2 inches/s Stanguard Threshold Sensor

• Powered by DCU (14V) 1A max
• Reflective infrared sensor

Motor 1

• Requires a voltage supply of 120VDC
• Armature resistance of 12 Ohms
• Connected to a relative encoder
• Controlled by DCU, DCU controlled by

rotary switch/encoder

Motor Test- Total Input Voltage

DC voltage supply to the Motor DC power supply to the door system

• Measured input door system

voltage is 117V RMS. Rated voltage is 120V RMS

• Motor supply voltage(Vo) is

91V RMS

Motor Test- Motor Voltage

Motor voltage when door open Motor voltage when door close

• Back EMF(Ve) is 85V RMS

which equal to the product of angular velocity of the motor(w) and back EMF constant of the motor(Ke)

• Different direction
• Armature resistance(R) 12 ohm

System Design

Command Data Format

MAX232

• DCU: RS232 Port
• Requires a Level Shifter that will not destroy the

serial pins on the ATMega328P

• MAX3232-

– Runs at 3 V and communicates with 5V – Using MAX3232:

• Includes the necessary 0.1 µF charge

pump capacitors

• Works at broader voltage range than

MAX232 (3-5.5V)

ACS712 Current Sensor

• Sensor to monitor motor current

○ [0-1A]

• Needs to read information without disrupting
• Electrically Isolated Current Sensor
• Produce Analog output

Current sensor testing Data

• Raw analog output from the

current sensor

• Map the voltage from 0 to

5V, map the current from 0 to 1A

16- Channel Analog/ Digital Multiplexer Breakout

• I/O’s from the Terminal Plugs on the DCU
• From the schematics of the plugs, there are 12 inputs and 6 outputs

○ Plan to use 2 MUX to accommodate for the 18 inputs ○ Selector ports of the 2 MUX will be connected to the same ports on the ATMega

• The 6 outputs require a 5 volt pull-up along with a 1K resistor in series

○ Limit current flowing in the circuit and to account for unpredictable fluctuations while in operation

MUX Connection and Code

Door While Closing Door While Opening

ATMega328P XPlained Mini

• Need a microcontroller that can

connect with the DCU, motor and bluetooth

• Needs to transmit all of the

information to the bluetooth

• Need microcontroller with adequate

ports for the bluetooth connector

• ATmega328p has built in UART to

communicate with the bluetooth and ADC pin to receive the analog and convert signal

• Our goal is to receive serial signal

and transmit the signal to bluetooth

• Right now, it can receive serial signal

Atmel Transmitting and Receiving

• For bluetooth and

DCU communication, the serial communication (receive and transmit)

• Built in USART

Updated Budget

Stanley provided spare equipment and components Multiplexer Breakout Board $4.95 x2 ($9.90) Max3232 Breakout Board $5.95 x2 ($11.90) Current Sensor ACS712 $7.95 x3 ($23.85) Total Budget: $45.65

Next Steps

• ATmega328 P

– Communicate with DCU through MAX232 – ADC code – I2C communication with Bluetooth

• Wiring Simplification
• CSE

– Communication in serial signal through cloud or a device via Bluetooth

Thank You