MB8450, MB8460 & MB8480-CarSonar-WR 2 MB8450,MB8460 & MB8480 CarSonar-WR Ultrasonic Proximity Sensor The MB8450, MB8460 and MB8480 CarSonar-WR are high performance, low-cost ultrasonic proximity sensors designed to detect the side of a vehicle in a drive thru. The MB8450, MB8460 and MB8480 CarSonar-WR feature a simultaneous multi-sensor design which allows the sensor to operate even in the presence of other ultrasonic sensors. The MB8450 sensor utilizes a USB Micro-B connector for simple interfacing. The MB8460 and MB8480 use a simple pinout connection. Users can integrate many sensors into one system with little to no effect from the sensor-to-sensor interference which can occur with other ultrasonic sensor solutions. The CarSonar-WR features a True/False output and an optional range output. Deploying a network of ultrasonic sensors is simple and easy with the MB8450 interface. USB Factory calibration and testing is standard. Features Benefits Applications & Uses Drive thru ATMs MB8450 has a USB interface for MB8450 has a USB interface for simple computer connection and easy integration Drive thrus installation. MB8450 USB Micro-B connector Automated displays and advertising MB8460/MB8480 has a simple matches most smartphones Proximity zone detection pinout connection Easily deploy network-based IT Kiosks and booths CarSonar-WR has a simple True/ solutions with integrated ultrasonic Multi-sensor arrays False output and optional range sensors Car park signs output Reliable proximity information 1 Smart parking meters ~4.0 second object acquire time Sensor is a rangefinder/proximity 1 Parked car detection ~5.0 second object release time sensor with a detection zone to the preset range to 150-cm Filtered proximity output allows for multi-sensor operation Mounting holes provided Notes: IP67 Rated transducer Excellent for multiple sensor systems 1 Custom acquire and release times Continually checks and outputs 2 Please reference page 11 for part number proximity information key. Learns nearby environment Sensor operates at 42KHz Range data from 50-cm to 500-cm About Ultrasonic Sensors Our ultrasonic sensors are non-contact object detection and ranging sensors that detect objects in air, within an area. These sensors are not affected by color or other visual characteristics of the detected object. Ultrasonic sensors use high frequency sound to detect and localize objects in a variety of environments. Ultrasonic sensors measure the time of flight for sound that has been transmitted to and reflected back from nearby objects. Based upon the time of flight, the sensor then outputs a range reading. Close Range Operation Applications requiring 100% reading-to-reading reliability should not use MaxSonar sensors at a distance closer than 50-cm. Although most users find MaxSonar sensors to work reliably from 0 to 50-cm for detecting objects in many applications, MaxBotix Inc., does not guarantee operational reliability for objects closer than the minimum reported distance. Because of ultrasonic physics, these sensors are unable to achieve 100% reliability at close distances. Warning: Personal Safety Applications We do not recommend or endorse this product be used as a component in any personal safety applications. This product is not designed, intended or authorized for such use. These sensors and controls do not include the self-checking redundant circuitry needed for such use. Such unauthorized use may create a failure of the MaxBotix Inc., product which may result in personal injury or death. MaxBotix Inc., will not be held liable for unauthorized use of this component. Page 1 MaxBotix Inc., products are engineered and assembled in the USA. MaxBotix Inc. Email: info maxbotix.com Copyright 2005 - 2020 MaxBotix Incorporated Web: www.maxbotix.com Patent 7,679,996 PD13256g MB8450, MB8460 & MB8480-CarSonar-WR MB8460 and MB8480 Pin Out Pin 1-BW- Unused, leave disconnected or connect to circuit common ground. Pin 2-PW- Digital Proximity Logic, outputs a High/Low logic voltage level depending on proximity detection. High means an object has been detected in the detection zone. Low means no object is present. There is a ~5.0 second delay on acquiring targets and a ~4.0 second delay for releas- ing a target once detected. This hysteresis improves sensor reliability. Pin 3-AN- Analog Voltage Output: This pin outputs a single ended analog voltage scaled representation of the distance. This output is referenced to the sensor ground and Vcc. The scale factor us (Vcc/1024) per 1-cm. Pin 4-RX- This pin is internally pulled high. The MB8460 and MB8480 will continually measure and output proximity and range data. Leave the pin disconnected or hold the pin high for proximity information. Hold low to stop all sensor activity and reset acquire timers. Pin 5-TX- The TX output delivers asynchronous serial with an RS232 format on MB8460 and TTL for- mat on MB8480, except voltages are 0-Vcc. If a target is detected at 50-cm the output appears as follows: R050 P0. The output is an ASCII capital R, followed by three ASCII character digits representing the range in cm up to a maximum of 500-cm, followed by an ASCII space and the ASCII character P, fol- low by one ASCII digit 1 or 0 corresponding to the proximity information, followed by a carriage re- turn. Range information is provided for reference and is not considered accurate when more than one sen- sor is running in the same environment. Although the voltage of 0-Vcc is outside the RS232 standard, most RS232 devices have sufficient margin to read 0-Vcc serial data. If standard voltage level RS232 is desired, invert, and connect an RS232 converter such as a MAX232. Pin 6-Positive Power, Vcc: The sensor is designed to operate at 5V DC. For best operation, the sensor requires that the DC power be free from electrical noise. (For installations with known dirty electrical power, a 100uF capacitor placed at the sensor pins between V+ and GND will typically correct the electri- cal noise.) Pin 7-GND- Return for the DC power supply. GND (& Vcc) must be ripple and noise free for best opera- tion. General Description of Operation of the CarSonar-WR The MB8450 sensor utilizes a USB Micro-B connector for interfacing. The MB8460 and MB8480 sensors utilize pinout connections as shown above. Each sensor is small in size with holes on the PCB for easy mounting. Each MB8450 sends serial data to the users operating system (OS) which can then be read from the registered COM port (or equivalent) using a terminal program or read directly from the OS by using the appropriate software functions. Each MB8450 is powered by the USB connection and begins operating after the USB handshaking has occurred. Range data and proximity information is sent continuously to the users OS and is available to be read at any time. Connection is handled automatically by device drivers that are available for most OSs (Windows XP and later, Linux Kernel 2.6 and later, Mac OS X and later.) The steps taken to perform the configuration vary slightly by the target OS, however, the general operation and the data sent by the sensor remains the same. Page 2 MaxBotix Inc., products are engineered and assembled in the USA. MaxBotix Inc. Email: info maxbotix.com Copyright 2005 - 2020 MaxBotix Incorporated Web: www.maxbotix.com Patent 7,679,996 PD13256g