drm ? 4000 l dead reckoning module the dead reckoning module ( drm ? ) 4000 l is a miniature, electronic device for personnel on foot that provides the users positi on relative to an initialization point. dead r eckoning (dr) data and external gps nmea data are blended by an inter nal kalman filter. when gps data is available the d ead r eckoning s ensors are automatically calibrated continuously and the two data sources are blended into a composite real - time position data output. when gps data is unavailable, dead reckoning takes over. drm ? 4000 l position e rror characteristics are independent of time, and depend primarily on distance traveled. patent ed motion classification algorithms ( smartpedometry? ) analyze walking mot ion, and compensate when the use r is running, or just fidgeting in place . commercially available gyros are included to compensate for transient magnetic disturbances and transient a ccelerations that may interfere with compass opera tion . a barometric altimeter provides vertical position accurate enough to discriminate between floor s of a building (1.5 meter accuracy) . high fidelity azimuth , pitch and roll data from the magnetic compass is also available for use by the host system. the drm ? 4000 l unit can be directly interfaced to many gps receivers and man - pack computers, and includes capabilities for accurate field calibration. the drm ? 4000 l is a reliable gps supplement for personnel on foot. the unit is small enough to be easily integrated into torso - mounted devices, and does not require any sensors on the legs or feet . applications for the drm ? 4000 l include p ersonnel tracking (fire, police, and security ) , real - time waypoint navigation, d isaster relief operations, and cell phone signal strength mapping . features & benefits ? state - of - the - art dead reckoning device for personnel navigation . ? continuous, gap - free, personnel position location, with or wi thout gps. dr accuracy up to 2% of distance traveled . ? internal kalman filter integrates dead reckoning position with external gps, using nmea0183 format ? digital compass azimuth accuracy better than 1 ? low power consumption (<0.5 watt) and small size ( approx 2 x 2 x 0. 4 inches) for man - portable applications ? built - in world m agnetic m odel for accurate true direction anywhere (automatic declination) ? motion classification and adaptive algorithms maximize accuracy under difficult conditions ? sensors include 3 commercial grade gyros, 3 accelerometers, 3 magnetometers, temperature, and baro metric altimeter ? industrial temperature range ( - 40 to +85 c) for wide environment usage ? availa ble as a circuit card module with rs232 interface or a demonstration kit with a usb interface.
drm4000 l 2 www.honeywell.com specifications characteristics conditions min typ ical max units position horizontal accuracy error as percent of distance traveled in ideal terrain 2.0 % compass azimuth accuracy compass factory calibrated 1.0 deg compass azimuth resolution 0.1 deg vertical accuracy pressure altimeter 1.5 meters physical dimensions pcb assembly only 1.83 x 1.9 x 0. 4 inches mounting holes four holes (#4 hardware recommended) 0.112 inches weight pcb assembly only 0.8 25 ounces grams mechancial shock pcb assembly only, 0.5 msec sine >500 gs input power voltage range applied to j1, pins 1 and 4 2.8 3.3 5.2 volts dc current range battery voltage = 3.3 volts no gps reciever power supplied 75 ma digital interface serial data rs - 232c on j1 pins 2 (rxd) and 3 (txd) 96 00 19200 384 00 baud update rate 4 hz j1 connector samtech tfm - 105 - 02 - s - d - lc pinned socket - gps rxd nmea 0183 data from gps (j1, pin 7) 4800 9600 38400 baud environment temperature operating storage (oem only) - 4 0 - 55 - - +85 +125 c
drm4000 l www.honeywell.com 3 configuration configuration information is stored internally in the microprocessor's flash memory. there are a finite number of write cycles to the flash. the limit will not normally be reached if changes are made manually. care should be taken if the writing is performed automatic ally . default board orientation is +y axis up and +z axis forward. the axes are printed on the module circuit board near the magnetic sensors . this orientation puts the module flat against the torso. the d efault rs - 232 baud rate is 19200. a factory backup configuration is stored in the module. if an error is generated in the normal configuration, the backup configuration can be read and saved. the drm4000 l is stocked and ships in a standard configuration for rs - 232 data inputs and outputs. the gps nmea0183 data input interface will be maintained from drm input to the output plus the drm unique commands and responses. drm4000 l basic dimensions
drm4000 l 4 www.honeywell.com connections the drm4000 l has a samtec tfm - 105 - 02 - s - d - lc connector on the circuit board for the j1 electrical interface. possible mating connectors would be the samtec sfsd - 05 - for wired assemblies and the sfm - 105 - for mating circuit boards. the table below shows the interface pin - out definition for j1 . j1 interface pin - out definition j1 pin signal definition comment 1 bat+ + 2.8 to + 5.5 volts from battery 2 host_rxd data from host computer to drm 3 host_txd data to host computer from drm 4 gnd power and data return 5 1pulsepersec not used 6 odometer not used 7 egps rxd data from gps receiver to drm 8 egps txd data to gps receiver from drm 9 event optional event marker input 10 +3.3v, 50ma max to e xternal gps receiver power input . development kit the drm4000 l development kit includes a plastic enclosure with an internal i/o adapter board with a usb interface, gps receiver, and a r echargeable lithium battery, also included are the windows? drm4000 l host s oftware , drm4000 l users guide, carrying case, gps antenna , baseball cap with velcro antenna mount and a usb patch cable. it is highly recommended that first time users procure the development kit first, before ordering additional drm4000 l oem modules. the mini - b usb jack on the drm4000 l kit enclosure accommodates data transfer upto 38.4kbps as well as trickle charging the battery when required. the pushbutton power on/off switch doubles as a momentary "event" marker button to help in data collection processing. ordering information ordering number data interface product drm 4000 l - n00 - 232 rs - 232 dead reckoning module drm4000 l - n00 - usb - demo usb dead reckoning module development kit find out more for more information on honeywells magnetic sensors, compassing, magnetometry and dead reckoning visit us online a t www.honeywell.com/magneticsen s o rs or contact us at 800 - 323 - 8295 (763 - 954 - 2474 internationally). u.s. patents 5,583,776 5.952,825 6, 522,266 6,539,639 6,543,146 6,667,682 6,813,582 6,842 ,991 6,877,237 and 7,095,226 apply to the technology described . drm and smartpedometry are trademarks of honeywell . honeywell reserves the right to make changes to any products or technology herein to improve reliability, function or design. honeywell d oes not assume any liability arising out of the application or use of any product; neither does it convey any license under its patent rights nor the rights of others. form # 900426 september 2011 ?20 11 hone ywell international inc. honeywell 12001 highway 55 plymouth, mn 55441 tel: 800 - 323 - 8295 www. magneticsensors .com
|
