摘要:
An optical seed counting system for counting seeds that are dispensed through a plurality of seed tubes associated with a multiple row seed planter. Each seed tube includes an optical sensor having an emitter and a receiver. The emitter and the receiver each include lens components for shaping an optical beam. Optical fibers connect the emitter to an optical beam generating device and the receiver to an optical beam detecting device both positioned remotely from the seed tubes. The optical components of the emitter generate a substantially spatially uniform optical beam across a sensing area within the seed tubes. The detecting device generates a pulse signal where the period of the pulses represents the intensity of the optical beam in the sensing area. Seeds that are dispensed in the seed tubes interfere with the optical beam in a manner that affects the light intensity of the beam. Therefore, the change in intensity of the beam indicates the number of seeds.
摘要:
An optical seed flow monitoring system for monitoring seed flow through the primary and secondary seed tubes in an air seeding system. The primary seed tubes include a primary seed sensor having a plurality of emitter lens bodies and receiver lens bodies. Optical fibers connect the emitter lens body to an optical beam generating device and the receiver lens body to an optical beam detecting device both positioned remotely from the seed tubes. Alternately, one or more of the secondary seed tubes can include a secondary seed sensor having an emitter lens body and a receiver lens body.
摘要:
An optical particle flow monitoring system for monitoring particle flow through the primary and/or secondary tubes of an air dispensing system, such as an air seeder. The primary tubes include a particle sensor having at least one emitter lens body, which forms a substantially uniform, collimated beam which illuminates a sensing area in a seed tube in order to accurately monitor the number of particles flowing in the seed tube. In the preferred embodiment, optical fibers connect the emitter lens bodies to optical beam generating devices, and connect respective receiver lens bodies to optical beam detecting devices, with both the optical beam generating devices and the optical beam detecting devices being located remotely from the seed tubes for improved immunity to static electricity discharge. All the particles flowing in the secondary seed tubes associated with a given primary tube may be counted by a particle sensor located on the primary tube, thus greatly decreasing the number of sensors and the amount of data processing required to determine the total number of particles dispensed by the secondary tubes of the air dispensing system.
摘要:
A particulate flow monitor for a pneumatic system including a particulate flow tube defining a particulate flow path, a blower connected to the flow tube and the flow tube terminating at a particulate discharge, which flow monitor comprises an acoustic transducer connected to the flow tube intermediate the blower and the discharge; said acoustic transducer being located in said particulate flow path; an impact surface on said acoustic transducer adapted for being impacted by the particulate matter in said flow path; and an electrical signal generator connected to said acoustic transducer and adapted for generating an electrical signal in response to sound waves created by particulate matter impact; said signal generator including an output adapted for providing an electrical output signal corresponding to said sound waves; and a processor connected to said signal generator output; and said processor being programmed to monitor particulate flow based on said detected particulate matter impact.
摘要:
A particulate flow monitor for a pneumatic system including a particulate flow tube defining a particulate flow path, a blower connected to the flow tube and the flow tube terminating at a particulate discharge, which flow monitor comprises an acoustic transducer connected to the flow tube intermediate the blower and the discharge; said acoustic transducer being located in said particulate flow path; an impact surface on said acoustic transducer adapted for being impacted by the particulate matter in said flow path; and an electrical signal generator connected to said acoustic transducer and adapted for generating an electrical signal in response to sound waves created by particulate matter impact; said signal generator including an output adapted for providing an electrical output signal corresponding to said sound waves; and a processor connected to said signal generator output; and said processor being programmed to monitor particulate flow based on said detected particulate matter impact.
摘要:
A low-cost training and synthetic visualization system and method directed to improving an individual's airborne performance in general aviation, skydiving, and other aerial applications. The system is comprised of a self-contained mobile sensor and data storage device for recording the travel path, orientation, and forces acting upon an object as it moves through space, a desktop graphics software program for creating a playback of the recorded data on a three-dimensional representation of the environment through which the object moved, a means of linking the sensor and data storage device to the software program for the purpose of exchanging information, and a centralized data storage and retrieval system designed to accept, assimilate and redistribute the recorded data.
摘要:
An expandable, modular microcomputer system for an off-road vehicle having a controller which is operable to generate a plurality of independent pulse-width modulated control signals and a plurality of independent on/off control signals to a corresponding plurality of metal oxide silicone field effect transistors (MOSFETS). An RS-485 bi-directional serial communications interface enables the system to communicate with at least one other ingredient, external, controller. Thus, the control system can be modularly expanded to handle the needs of increasingly complex powershift transmissions. A watchdog circuit monitors operation of the controller and is supplied with a regulated voltage independent of the regulated voltage used to power the microcomputer. The watchdog can provide a reset signal to the microcomputer when spurious operation of the microcomputer is detected, as well as initiate operation of a back-up voltage supply circuit. The back-up voltage supply circuit is responsive to at least one analog input and operable to pulse-width modulate at least one of the MOSFETs to thereby control a clutch of a powershift transmission while operating in a "limp-home" mode. The system is particularly well-suited for controlling transmissions of heavy-duty off-road vehicles such as earth moving and other like vehicles, but can be readily adapted for use with transmissions of vehicles to be used to widely varying applications.
摘要:
An automatic feedback control system for use with an off-road vehicle having an adjustable-elevation, ground-engaging implement, such as an agricultural tractor with a three-point hitch and a plough or cultivator, is disclosed. The automatic control system provides an engine-sensing draft control system which adjusts the height or elevation of the ground-engaging implement so as to maintain the draft or load forces experienced by the vehicle at a substantially constant level. The determination of the draft being produced by the ground-engaging implement is determined by the engine speed deviation from a target point speed which is indicated by an operator-set desired no-load engine speed and an operator-set engine lug-down value or load. To provide proper operation of the engine-sensing draft control system, multiple feedback compensation mechanisms are provided, including a throttle compensation function, an electrohydraulic valve compensation function, a slip-sensing function, a sensitivity (deadband) adjustment, a maximum implement-lowering rate function, and an automatic downshift signal function to cause the transmission of the tractor to downshift to a lower speed to avoid engine stall under certain conditions.
摘要:
A fleet operations quality management system for use with one or more vehicles which includes a data recording unit and separate memory subsystem mounted on each vehicle, a remotely located data collection station to collect, store and pre-process data from multiple vehicles, a centralized data storage and retrieval system designed to accept and assimilate recorded trip data, a web application designed to provide access to and analysis of the recorded trip data, and a graphical software application that can be used to view the recreated trip in a realistic simulated environment. An electronic system comprising a receiver module and a mobile device, whereby the receiver module is capable of receiving data transmissions from a network of ground stations and buffering the data for future use.
摘要:
A fleet operations quality management system for use with one or more vehicles which includes a data recording unit and separate memory subsystem mounted on each vehicle, a remotely located data collection station to collect, store and pre-process data from multiple vehicles, a centralized data storage and retrieval system designed to accept and assimilate recorded trip data, a web application designed to provide access to and analysis of the recorded trip data, and a graphical software application that can be used to view the recreated trip in a realistic simulated environment. An electronic system comprising a receiver module and a mobile device, whereby the receiver module is capable of receiving data transmissions from a network of ground stations and buffering the data for future use.