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14928 results about "Programmable logic controller" patented technology

A programmable logic controller (PLC) or programmable controller is an industrial digital computer which has been ruggedized and adapted for the control of manufacturing processes, such as assembly lines, or robotic devices, or any activity that requires high reliability control and ease of programming and process fault diagnosis.

Food product surface sterilization apparatus and method

InactiveUS20040052702A1Increase temperatureReduce food product temperature changeFood preservationIndirect heat exchangersUnsafe conditionUltraviolet
An apparatus is disclosed for the micro-organism surface sterilization of foods using, a "germicidal" such as light waves (e.g., ultraviolet), and in some cases in combination with (or replaced by) one or more of sound waves and ozone. The surface sterilizer apparatus may include a plurality of germicidal (e.g., ultraviolet) emitters for surface sterilization of foods that are, e.g., rotated in a drum or rotated via a screw auger. Assemblies of emitters for the germicidal may be constructed to be watertight (i.e., withstand a high pressure, heated water spray), and movable relative to the drum or screw conveyor for easy cleaning and maintenance. The apparatus may also include a controller (e.g., programmable logic controller) for controlling the sterilization process so that the apparatus does not endanger personnel nearby, and so that the food is properly sterilized. The controller may vary the amount of germicidal used, the rate that food traverses the apparatus, the inclination of the apparatus, and terminate sterilization processing when an unsafe condition is detected. The apparatus may be used in-line with other food processing equipment for the real-time sterilization of food. The controller may also communicate with food processing components upstream of the apparatus for controlling the flow of food to the surface sterilizer
Owner:C & S EQUIP COMPANY

Intelligent tree trunk white paining robot

The invention discloses an intelligent tree trunk white painting robot and belongs to the related fields of urban and garden greening equipment. The intelligent tree trunk white painting robot comprises a machine frame system, a robot traveling system, a lime slurry supply system, an automatic white painting execution system and a real-time detection system. Adopting a spray painting mode for white painting of tree trunks, the robot can automatically walk along a side pavement and quickly and efficiently spray lime solution onto trees along the side pavement. In a real-time detection system, a digital compass, a laser sensor and a vision system are adopted to realize the semi-automatic searching of tree trunks and tree trunk automatic positioning, an ultrasonic transducer is adopted to realize automatic obstacle avoidance, and the whole-process real-time monitoring with a personal computer (PC) and a programmable logic controller (PLC) is realized. When the intelligent tree trunk white painting robot is used, coating is saved and the painting effect is optimized; and the robot automatically performs white painting of trees along the side pavement, the working efficiency is improved, labor force is saved, and the goals of intelligent control and green environmental sanitation are fulfilled.
Owner:SHANGHAI UNIV

Full-automatic bulk cargo storage yard stacking and taking method

The invention relates to a full-automatic bulk cargo storage yard stacking and taking method applied to large port wharfs, truck stations and open storages. According to the method, when a stacking and taking machine works, an operating driver for operating and monitoring is not needed in a cab of the stacking and taking machine and a person for control and operation of the whole process is also not needed in a field industrial personal computer on the basis of fully ensuring the utilization rate of a stock yard and exerting the stacking and taking capacity and other functions of the stacking and taking machine. After the field industrial personal computer acquires an operation task from a management system, optimal calculation and security inspection are performed according to the condition of the stock yard and the state of the stacking and taking machine, and related stacking or taking mode information is automatically generated; and then the system automatically sends related control instructions to a programmable logic controller (PLC) corresponding to the local stacking and taking machine, and the stacking and taking machine performs unmanned automatic stacking and taking operation of the whole process. Therefore, the method overcomes the defects of low automation degree of the conventional bulk cargo storage yard, high labor intensity of operators, low working efficiency and low field utilization rate.
Owner:上海派恩科技有限公司

Machine vision automatic detection system for rivets

The invention discloses a machine vision automatic detection system for rivets. The machine vision automatic detection system for rivets comprises a PLC (programmable logic controller), two industrial cameras, a storage bin, a vibration feed plate, a linear rail, a mechanical rotary plate, a waste product blowing pipe, a waste product discharging trough, a salable product blowing pipe, a salable product discharging trough, discharging baffles, an image acquisition card, an industrial personal computer, a touch screen, an electromagnet, a pneumatic electromagnetic valve, an upper sensor, a lower sensor, a hole sensor, a count sensor, a stepping motor drive and a stepping motor. The detection precision of the machine vision automatic detection system for rivets is within +/-0.03mm, and the electromagnetic valve is controlled by the PLC to complete precise waste product blowing and realize separation of salable products from waste products. The final number of the salable products is accurately recorded by a counter, and a discharging port is closed according to time difference to prepare for a subsequent packaging procedure. In addition, all data are recorded in a database, and various production, client, analysis and CPK (complex processing capability index) report forms can be generated by one key.
Owner:SHANGHAI JIAO TONG UNIV
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