HRLV-MaxSonar - EZ Series HRLV-MaxSonar - EZ Series High Resolution, Precision, Low Voltage Ultrasonic Range Finder 5 MB1003, MB1013, MB1023, MB1033, MB1043 The HRLV-MaxSonar-EZ sensor line is the most cost-effective solution for applications where precision range-finding, low-voltage operation, and low-cost are needed. This sensor component module allows users of other more costly precision rangefinders to lower the cost of their systems without sacrificing performance. The HRLV-MaxSonar-EZ sensor line provides high accuracy and high resolution ultrasonic proximity detection and ranging in air, in a package less than one cubic inch. This sensor line features 1-mm resolution, target-size and operating-voltage compensation for improved accuracy, superior rejection of outside noise sources, internal speed-of-sound temperature compensation and optional external speed-of-sound temperature compensation. This ultrasonic sensor detects objects from 1-mm to 5-meters, senses range to objects from 30-cm to 5 1 -meters, large objects closer than 30-cm are typically reported as 30-cm . The interface output formats are pulse width, analog voltage, and serial digital in either RS232 or TTL. Factory calibration is standard. 1 See Close Range Operation Precision Range Sensing Easy to use interface with distance Free run operation uses a 2Hz filter, with Range-finding at a fraction of the cost of provided in a variety of outputs 100mS measurement and output cycle other precision rangefinders Target size compensation provides Actual operating temperature range from Reading-to-reading stability of 1-mm at 1 greater consistency and accuracy when 40C to +65C, Recommended -meter is typical switching targets operating temperature range from -15C Accuracy is factory-matched providing a 2 Sensor automatically handles acoustic to +65C, provided proper frost typical accuracy of 1% or better 4 2 noise prevention is employed Calibrated acoustic detection zones 4 Sensor ignores other acoustic noise Operating voltage from 2.5V to 5.5V allows selection of the part number that Nominal current draw of 2.5mA at 3.3V, sources matches a specific application Small and easy to mount and 3.1mA at 5V Compensation for target size variation Calibrated sensor eliminates most sensor Low current draw reduces current drain and operating voltage range to sensor variations for battery operation Standard internal temperature Very low power range, excellent for Fast first reading after power-up compensation and optional external multiple sensors or battery based systems eases battery requirements temperature compensation General Characteristics Range Outputs Low-cost ultrasonic rangefinder Pulse width, (1uS/mm) Size less than 1-cubic inch with easy Analog Voltage, (5-mm resolution) mounting Serial, (RS232 or TTL using solder-able Object proximity detection from 1-mm to Notes: jumper or volume orders available as no- 1 See Close Range Operation 5-meters cost factory installed jumper) 2 Users are encouraged to evaluate the sensor Resolution of 1-mm performance in their application. Easy to Use Component Excellent Mean Time Between Failure 3 See page 6 for multi-sensor operation. 4 Module (MTBF) Please reference page 5 for minimum Triggered operation yields a real-time operating voltage verses temperature Gracefully handles other ultrasonic 3 100mS measurement cycle information. sensors 5 Please reference page 16 for part number key. Stable and reliable range readings and excellent noise rejection make the sensor easy to use Close Range Operation Applications requiring 100% reading-to-reading reliability should not use MaxSonar sensors at a distance closer than 30- cm. Although most users find MaxSonar sensors to work reliably from 0 to 30-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. Web: www.maxbotix.com Copyright 2005 - 2021 MaxBotix Incorporated PD11721o Patent 7,679,996 HRLV-MaxSonar - EZ Series Automated factory systems Box dimensions Applications & Uses This product is not recommended as Environments with acoustic and elec- Proximity zone detection a device for personal safety trical noise People detection Designed for protected indoor envi- Height monitors Robots ranging sensor ronments Auto sizing Autonomous navigation Distance Motion detectors measuring Limited tank level measurements Long range object detection Pin Out Description Pin 1- Temperature Sensor Connection: Leave this pin unconnected if an external temperature sensor is not used. For best accuracy, this pin is optionally connected to the HR-MaxTemp temperature sensor. Look up the HR-MaxTemp temperature sensor for additional information. Pin 2- Pulse Width Output: This pin outputs a pulse width representation of the distance with a scale factor of 1uS per mm. Output range is 300uS for 300-mm to 5000uS for 5000-mm. Pulse width output is +/- 1% of the serial data sent. Pin 3- Analog Voltage Output: On power-up, the voltage on this pin is set to 0V, after which, the voltage on this pin has the voltage corresponding to the latest measured distance. This pin outputs an analog voltage scaled representation of the distance with a scale factor of (Vcc/1024) per 5-mm (This output voltage is referenced to GND, Pin 7). The analog voltage output is typically within 10-mm of the serial output. Using a 10-bit analog to digital convertor, one can read the analog voltage bits (i.e. 0 to 1023) directly and just multiply the number of bits in the value by 5 to yield the range in mm. For example, 60 bits corresponds to 300-mm (where 60 * 5 = 300), and 1000 bits corresponds to 5000-mm (where 1000 * 5 = 5000-mm). For users of this output that desire to work in voltage, a 5V power supply yields~4.88mV per 5 mm. Output voltage range when powered with 5V is 293mV for 300-mm, and 4.885V for 5000-mm. Pin 4- Ranging Start/Stop: This pin is internally pulled high. If this pin is left unconnected or held high, the sensor will continually measure and output the range data. If held low, the HRLV-MaxSonar-EZ will stop ranging. Bring high for 20uS or longer to command a range reading. Real-time Range Data: When pin 4 is low and then brought high, the sensor will operate in real time and the first reading output will be the range measured from this first commanded range reading. When the sensor tracks that the RX pin is low after each range reading, and then the RX pin is brought high, unfiltered real time range information can be obtained as quickly as every 100mS. Filtered Range Data: When pin 4 is left high, the sensor will continue to range every 100mS, but the output will pass through a 2Hz filter, where the sensor will output the range based on recent range information. Pin 5-Serial Output: By default, the serial output is RS232 format (0 to Vcc) with a 1-mm resolution. If TTL output is desired, solder the TTL jumper pads on the back side of the PCB as shown in the photo to the right. For volume orders, the TTL option is available as no-cost factory installed jumper. The output is an ASCII capital R, followed by four ASCII character digits representing the range in millimeters, followed by a carriage return (ASCII 13). The maximum distance reported is 5000. The serial output is the most accurate of the range outputs. Serial data sent is 9600 baud, with 8 data bits, no parity, and one stop bit. V+ Pin 6 - Positive Power, Vcc: The sensor operates on voltages from 2.5V - 5.5V 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 electrical noise.) Please reference page 5 for minimum operating voltage verses temperature information. GND Pin 7 Sensor ground pin: DC return, and circuit common ground. About Ultrasonic Sensors Our ultrasonic sensors are in air, non-contact object detection and ranging sensors that detect objects within an area. These sensors are not affected by the 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. Page 2 MaxBotix Inc., products are engineered and assembled in the USA MaxBotix Inc. Web: www.maxbotix.com Copyright 2005 - 2021 MaxBotix Incorporated PD11721o Patent 7,679,996