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59results about How to "Reliable feedback" patented technology

Relay control method capable of reliably feeding back channel information

InactiveCN102769517AReduce total revenueSolve the phenomenon of "cheating" the source nodeError prevention/detection by using return channelRadio relay systemsPaymentChannel state information
The invention discloses a relay control method capable of reliably feeding back channel information. A transfer payment section is added in the profit of a relay node to control the profit of each relay node so as to ensure that the relay node can feed back the true value when feeding back the channel information, wherein the transfer payment is defined as the difference between the profit of a process that all of the other relay nodes Rj participate in the relay selection of a certain relay node Ri and the profit of a process that all of the other relay nodes Rj are supposed not to participate in the relay selection of the relay node Ri in the relay selection process of the relay node Ri. The relay control method provided by the invention has the positive effect that the transfer payment is introduced to automatically enable each relay node to follow the principle that the relay node can obtain the maximum profit only by feeding back the true channel information when feeding back the channel information, so as to well solve the problem that the relay node cheats the source node and to ensure reliable feedback of the channel information. Accordingly, the principle that the optimum effect can be obtained by telling the truth can be realized, and the optimum secrecy capacity of physical layer communication of the entire system can be ensured.
Owner:ZUNYI LISHENG MACHINERY PROCESSING

Ventilation system control method and device and air conditioner

The invention provides a ventilation system control method and device and an air conditioner. The method comprises the steps that the indoor carbon dioxide concentration is obtained; a ventilation unit is controlled to be started according to the indoor carbon dioxide concentration, and fresh air is introduced an indoor; after the ventilation is started, the ventilation unit is controlled to be closed according to the indoor carbon dioxide concentration and the carbon dioxide concentration change trend; and the carbon dioxide concentration change trend is obtained by detecting a first-order derivative f (x) of the carbon dioxide concentration. By arranging a carbon dioxide concentration sensor and the ventilation unit, the indoor carbon dioxide concentration is detected in real time, the first-order derivative of the carbon dioxide concentration is accurately calculated, the indoor carbon dioxide concentration change can be accurately and reliably fed back in real time, the ventilationunit is accurately regulated and controlled to introduce outdoor fresh air into the indoor, and the ventilation unit is controlled to be opened and closed; erroneous judgment caused by abnormal signals is avoided, the data accuracy and stability are effectively guaranteed, and the indoor air quality is improved.
Owner:NINGBO AUX ELECTRIC +1

Position monitoring device for grounding handcart of switch cabinet

ActiveCN107565437AMeet the requirements of anti-misoperation interlockingReliable monitoringSwitchgear detailsControl theoryBus
The invention discloses a position monitoring device for a grounding handcart of a switch cabinet. The device includes a grounding handcart and a pulley guide rail arranged in a switch cabin. A frontpushing and pressing pulley and a rear pushing and pressing pulley are arranged on the pulley guide rail. A front pressing strip is arranged on the pulley guide rail. A front reset spring is arrangedbetween one end of the front pressing strip and the pulley guide rail. A state stroke switch is arranged at the front end of the pulley guide rail. A rear pressing strip is arranged on the pulley guide rail. A rear reset spring is arranged on one end of the rear pressing strip. A position stroke switch is arranged at the rear end of the pulley guide rail. According to the invention, by utilizing the front pushing and pressing pulley and the rear pushing and pressing pulley mounted on the grounding handcart to push and press the stroke switch so as to trigger a stroke switch joint, whether thegrounding handcart is in the switch cabinet or not, whether the grounding handcart is in a working state or not and whether the grounding handcart is in a testing position or not can be monitored andfed back reliably and state signals concerning to that the handcart is moved out of the switch cabinet can be fed back. Besides, influence from handcarts of other switch cabins can be eliminated. Thedevice provided by the invention meets requirements for error interlocking prevention of all switch cabinets on a bus.
Owner:HUNAN YANNENG SENYUAN ELECTRIC POWER EQUIP

Portable warning and protecting device for grounding fault of apparatus

The invention relates to a portable warning and protecting device for grounding fault of an apparatus. The portable warning and protecting device comprises a ground wire monitoring circuit and an abnormal warning circuit. The ground wire monitoring circuit comprises a filtering inductor, a power supply, a protection diode and a resistor, one end of the filtering inductor is grounded while the other end of the filtering inductor is sequentially serially connected with the power supply, the protection diode and the resistor, and the other end of the resistor is connected at a grounding end of an apparatus shell. The abnormal warning circuit comprises a bi-stable circuit module, a triode, a two-channel relay and a warner, an input interface of the bi-stable circuit module is connected with the grounding end of the apparatus shell, an output interface of the bi-stable circuit module is connected with a base of the triode, an emitter of the triode is connected with a coil of the two-channel relay, the triode drives the two-channel relay to act, one end of a normally open contact of the two-channel relay is connected with the grounding end of the apparatus shell while the other end of the normally open contact of the two-channel relay is grounded to form a protection loop, and one end of another normally open contact of the two-channel relay is connected with a collector of the triode and connected with a power supply while the other end of the normally open contact of the two-channel relay is connected with the warner to form a warning loop. The portable warning and protecting device is capable of guaranteeing reliable grounding of the apparatus, so as to prevent equipment loss and possible personal harm caused by accidental grounding fault of the apparatus.
Owner:STATE GRID CORP OF CHINA +1

Wireless intelligent silicone tube cut-off device and control method

The invention relates to a wireless intelligent silicone tube cut-off device and a control method and belongs to silicone tube cut-off devices and control methods. The cut-off device comprises a linear motor control module, a wireless signal transmission module, a linear motor execution module and a system fault monitoring module. The linear motor control module is connected with the wireless signal transmission module through a conditioning circuit, the wireless signal transmission module is connected with a linear motor drive circuit of the linear motor execution module through a communication device, control of a linear motor is finished through the linear motor drive circuit, the system fault monitoring module is connected with a controller of the linear motor control module to form feedback control, connection and cut-off of fluid inside a silicone tube are controlled, and the stability of the device is guaranteed through the system fault monitoring module. The wireless intelligent silicone tube cut-off device and the control method have the advantage that connection and cut-off of the fluid inside the silicone tube can be effectively and reliably controlled in time; the wireless intelligent silicone tube cut-off device is exquisite in structure, small in energy consumption, reliable and efficient and proceeds rapidly; and system response is rapid, the information processing capability is high, and the reliability is good.
Owner:CHINA UNIV OF MINING & TECH

Direct-drive type high-response axial plunger type variable hydraulic motor with servo motor

InactiveCN105179159AComprehensive displacement informationFast detection and feedbackReciprocating piston enginesJoystickEngineering
The invention discloses a direct-drive type high-response axial plunger type variable hydraulic motor with a servo motor. The variable displacement mechanism of the direct-drive type high-response axial plunger type variable hydraulic motor comprises a servo motor, a variable control lever, a displacement sensor and a servo driving controller, wherein the output end of the servo driving controller is connected with the servo motor, and a rotor of the servo motor is fixedly connected with one end of the variable control lever; the other end of the variable control lever is positioned in a sliding groove of the displacement sensor, and the variable control lever can move to and fro in the sliding groove; and the end part of a driver pin of an oil distribution disc of the hydraulic variable displacement motor is fixedly connected with the variable control lever, and the displacement sensor is connected with a first signal feedback end of the servo driving controller. The variable hydraulic motor is simple and reasonable in structure, variable displacement and high frequency response and high precision stepless adjustment of variable torque output are realized on the axial plunger type variable hydraulic motor, and the whole adjustment process is smooth and is free of vibration.
Owner:ZHEJIANG UNIV
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