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107 results about "State logic" patented technology

A state logic control system is a programming method created for PLCs. A state logic control system uses a state transition diagram as a model of reality, thus using the fundamentals of finite-state machine theory as the basis of a programming language. State logic enables users to model the application they are trying to control by using a hierarchy that consists of Tasks, subdivided by States which are described by Statements.

Anti-tear protection for smart card transactions

A fast data transfer collection system using message authentication and contactless RF proximity card technology in non-contact storage and retrieval applications. The system is generally comprised of Host computers (application computer systems), Target radio frequency (RF) terminals, and a plurality of portable Tags ("smart" or "proximity" cards). A Host provides specific application functionality to a Tag holder, with a high degree of protection from fraudulent use. A Target provides control of the RF antenna and resolves collisions between multiple Tags in the RF field. A Tag provides reliable, high speed, and well authenticated secure exchanges of data / information with the Host resulting from the use of a custom ASIC design incorporating unique analog and digital circuits, nonvolatile memory, and state logic. Each Tag engages in a transaction with the Target in which a sequence of message exchanges allow data to be read(written) from(to) the Tag. These exchanges establish the RF communication link, resolve communication collisions with other Tags, authenticate both parties in the transaction, rapidly and robustly relay information through the link, and ensure the integrity and incorruptibility of the transaction. The system architecture provides capabilities to ensure the integrity of the data transferred thus eliminating the major problem of corrupting data on the card and in the system. The architecture and protocol are designed to allow simple and efficient integration of the transaction product system into data / information processing installations.
Owner:KELLY GUY M +3

Method for carrying out safety monitoring and early warning on kitchen work environment and system

The present invention relates to a method for carrying out safety monitoring and early warning on a kitchen working environment and a system. The method comprises the following steps that gas stove integrated operating state data is collected and converted into a gas stove integrated operating state logic signal and is transmitted to a central CPU processing module, the central CPU processing module carries out abnormal condition judgment on the gas stove integrated operating state logic signal according to a predetermined gas stove integrated work state logic representation, if an abnormal condition is judged, the duration of the abnormal condition is counted, the central CPU processing module judges whether the duration of the abnormal condition reaches a predetermined timed interval, if so, the alarming is carried out according to an alarm level and the alarm duration is counted, the central CPU processing module judges whether the abnormal condition exists or not when the alarm duration reaches a predetermined alarm time duration, and if the abnormal condition still exists, emergency measures are implemented. According to the method and the system, the intelligent monitoring, classification process and multi-level warning of the kitchen working environment can be realized, and the safety performance is high.
Owner:烟台华绅智能科技有限公司

Method for controlling flow of transmission control system of paper machine

ActiveCN101560741AProcess parameters are accurate and reliableThe process parameters are finely adjusted to make the working speed of the paper machine reliableTotal factory controlProgramme control in sequence/logic controllersEngineeringData treatment
The invention discloses a method for controlling the flow of a transmission control system of a paper machine. In the method, a control system comprising a programmable control device PLC, a speed governing device and a field bus is used; the control operating flow of preparation, operation, creeping, shut-down, cleaning and fault treating functions, which is included in the transmission control system of the paper machine is modularized; according to the functions required to control by the transmission system of the paper machine, 10 to 50 subsection states are set, and the address indexed addressing mode is used for subsection state logic control of all subsections such as logic conversion, data treatment and speed/torque control switch; the PLC repeatedly controls the transmission system according to the steps of input sampling, program operation, output refreshing and under the support of a flow control module; and the speed governing device executes all functions according to the PLC output information transferred by the field bus. The method has the advantages of reliably and harmoniously controlling the operating speed, speed difference control, speed ratio adjustment and the like of the paper machine and facilitating the yield and the quality of the paper machine.
Owner:ZHEJIANG HUAZHANG TECH

Intelligent charger with universal serial bus (USB) interface

InactiveCN105490361AIntelligent detection accessIntelligent detection and removalMobile unit charging stationsElectric powerElectricityControl signal
The invention relates to an intelligent charger with a universal serial bus (USB) interface. AC 220V current sequentially passes through a sorting circuit, a filtering voltage-stabilization circuit and a voltage transformation circuit and then is output to a USB device to be charged, the output end of the voltage transformation circuit is connected with a charging state detection circuit, a USB interface of the USB device to be charged is connected with a pull and plug detection circuit, the output ends of the charging state detection circuit and the pull and plug detection circuit are connected with a device comprehensive state logic operation circuit, the output end of the device comprehensive state logic operation circuit is connected with an on/off control circuit, the output end of the on/off control circuit is connected with the output end of a rectification circuit and can be used for switching on/off the input of a power supply, and the output end of the voltage transformation circuit is used for controlling duty cycle of a switching tube in the voltage transformation circuit according to a control signal output from a voltage-stabilization control circuit. By the intelligent charger, the access and the pull-out of a charging device are intelligently detected, power is automatically cut off from a source head after the device is pulled out, charging is automatically carried out after the device is inserted, and power is automatically cut off after the charging is full; and meanwhile, the intelligent charger has an overcurrent protection function, and the power supply is automatically cut off when overcurrent occurs so as to prevent an accident.
Owner:SHANGHAI INST OF TECH
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