68results about How to "Avoid accidental switching" patented technology

The invention relates to an air conditioner and an automatic control method for operational mode thereof. The operational mode can be automatically selected by the air conditioner according to temperatures set by users. Besides comparison between room temperature and setting temperature, outdoor temperature, season and the like are additionally taken as judgment conditions. The operational mode automatically selected by the air conditioner includes a heating mode, a cooling mode and a dehumidifying mode. When an indoor temperature deviation e is larger than or equal to minus 3 DEG C, the air conditioner enters the cooling mode; when the indoor temperature deviation e is smaller than minus 3 DEG C, the air conditioner enters the heating mode; in the cooling mode, when the indoor temperature deviation e is larger than or equal to minus 3 DEG C but smaller than 3 DEG C, the air conditioner enters the dehumidifying mode. The dehumidifying mode is added in the cooling mode, so that high energy consumption caused by frequent switching and mistake switching between the cooling mode and the heating mode during operation of the air conditioner is effectively prevented, and an automatic dehumidification function is further realized.

A method of forming an MTJ memory cell and / or an array of such cells is provided wherein each such cell has a small circular horizontal cross-section of 1.0 microns or less in diameter and wherein the ferromagnetic free layer of each such cell has a magnetic anisotropy produced by a magnetic coupling with a thin antiferromagnetic layer that is formed on the free layer. The MTJ memory cell so provided is far less sensitive to shape irregularities and edge defects than cells of the prior art.

A work-vehicle cabin having an air-conditioning unit is disclosed. The cabin includes a roof unit, a downwardly bulging ceiling portion constituting a part of the roof unit, a heater provided in the ceiling portion, an evaporator provided in the ceiling portion and arranged adjacently rearwardly of the heater, and a pair of forward air-supply openings provided in the ceiling portion and respectively disposed laterally of the heater for feeding conditioned air to the inside of the cabin.

An electronic circuit includes a microcontroller processor (410), a peripheral (420) coupled with the processor, an endian circuit (470) coupled with the processor and the peripheral to selectively provide different endianess modes of operation, and a detection circuit (140) to detect a failure to select a given endianess, whereby inadvertent switch of endianess due to faults is avoided. Other circuits, devices, systems, methods of operation and processes of manufacture are also disclosed.

The invention discloses a control method and a control device for switching an AP (Access Point) between hot standby ACs (Access Controllers). According to the scheme provided by the invention, after a tunnel switching notice sent by a slave AC is received by the AP, the survival states of a master AC and the slave AC are judged by detecting the master AC and the slave AC; the switching is performed according to the tunnel switching notice of the slave AC only when the survival state of the master AC is abnormal, so that the error switching when the master AC is not in fault is avoided and the interruption of service data caused by the error switching is also avoided; if the time-sharing detection for each AP is realized by the master AC by detecting the configuration of all the APs, the influence of a large quantity of gusty detection messages on the master AC and the slave AC is avoided; and besides, the hot standby combination of each two ACs can be clearly appointed by an IP (Internet Protocol) address and an IP message serves as an interactive hopping detection message between each two hot standby ACs.

The invention relates to an IEC (integrated Ethernet chip) 104 communication host-standby switching method under high redundancy configuration. A first monitoring system server and a second monitoring system sever which are adopted as monitoring systems of a master station are divided into a host machine and a standby machine; and four ports of the host machine and the standby machine are named as A1, A2, B1 and B2 respectively, wherein, one of the four port is a main port, the other three ports are standby ports, the four ports are peer-to-peer, and the switching sequence of control right isA1,A2, B1, B2, A1, A2..., thereby forming a logical ring. A channel state and a control right belonging state which are needed when the four ports of the monitoring system are switched are obtained from a real time database of the monitoring system, the port is suspended for preset time after the control right is received, and then the control right is switched. Data is all broadcasted firstly and is written into the real time database by a broadcast. The IEC 104 communication SOE (sequence of event) data is ensured to be transmitted in each channel simultaneously by the policy provided by the method under the configuration with two host machines and four channels of the monitoring system, and the consistency and the integrality of the IEC104 communication data can be ensured under all conditions.

The invention discloses a method for cell handover in a TD-SCDMA (Time Division-Synchronous Code Division Multiple Access) system and a device for the cell handover in the TD-SCDMA system. The method comprises the following steps of: acquiring the RSCP (Received Signal Code Power) measured value of a current cell and the RSCP measured value of each neighbor cell of the current cell; selecting neighbor cells respectively with an RSCP measured value larger than that of the current cell as target cells to be handed over; determining the priority of each of the target cells to be handed over according to the size of the RSCP measured values corresponding to the target cells to be handed over; and determining handover target cells from the target cells to be handed over according to the priorities of the target cells to be handed over, and the size relationship among corresponding cell signal quality measured values and preset threshold values, and carrying out cell handover. In the invention, the RSCP measured values and the cell signal quality measured values are adopted to judge whether the neighbor cells of the current cell meet cell handover or not, thereby achieving the aim that the cell mistaken handover is avoided by using the cell signal quality measured values when the RSCP measured values are inaccurate or on the high side due to the fact that interference exists in a frequency point where the cell is located.

The invention discloses a rapid switch method based on received signal strength indicator (RSSI) and link quality indicator (LQI) in a wireless sensor network, mainly solving the problems of low switch judgment precision and long time delay in the traditional switch process. The method is implemented by the following steps: 1) adopting an R value obtained by weighting and compounding the RSSI andLQI as a system preset parameter; 2) utilizing the R value for subnet selection, and reducing interactive times of scanning time delay and signalling by rapidly restoring a pre-adding flow especiallywhen pre-addition fails; 3) predicating geographic positions when in pre-switch, determining a subnet covering the position of a mobile node the next moment, and reducing the scanned subnet amount and switch time delay; and 4) utilizing a progressive judgment rule so as to avoid false switch and ping-pong effect. The method can effectively balance network capability, prolongs network life, and issuitable for the sensor network field which has high requirements on switch performance and is sensitive to switch time delay.

The invention relates to an electromechanically switchable form-locking freewheel mechanism for preventing an electromechanical brake from releasing. According to the invention, the freewheel mechanism is embodied in the form of an electric motor in which a pivot angle of the armature is limited, the armature is counterbalanced and has a locking element that cooperates with a gear. The invention permits a compactly designed freewheel mechanism that can be integrated into an electromechanical actuating unit of the electromechanical brake. The counterbalancing of the armature equipped with the locking element prevents external accelerations of the freewheel mechanism of the kind that can occur during driving operation of a motor vehicle from exerting a moment on the armature that could switch off the freewheel mechanism. A method for adjusting the clearance of an electromechanical brake is also provided.

The invention provides a method and device for switching a network device from a stand-by state to a main state and the network device. The method and device are applied to a network comprising a three-layer network and a two-layer ring network. A first three-layer network device and a second three-layer network device of the three-layer network are connected with a two-layer network device in the two-layer ring network, and a three-layer protection protocol is operated. The first three-layer network device is in the main state, and the second three-layer network device is in the stand-by state. The method comprises the steps that after a TC message is received, the second three-layer network device is switched from the stand-by state to a stand-by-to-main delay state, and if a heartbeat message of the three-layer protection protocol is not received within a first set time period, the second three-layer network device is switched from the stand-by-to-main delay state to the main state. Through the scheme, the second three-layer network in the stand-by state can be prevented from being switched to the main state mistakenly.

The invention relates to the technical field of hemispherical resonator gyro control, in particular to a working mode switching control method and system of a hemispherical resonator gyro. The control method comprises the following steps: calculating the angular acceleration of the current hemispherical resonator gyro and filtering; if the angular acceleration is greater than 0 and the angular velocity absolute value is less than a first judgment threshold, or the angular acceleration is less than or equal to 0 and the angular velocity absolute value is less than a second judgment threshold, entering a force balance mode; applying a control force Cp according to a force balance PID controller to keep the standing wave position of the harmonic oscillator still, and calculating and outputting the angular velocity; if the angular acceleration is less than or equal to 0 and the angular velocity absolute value is greater than or equal to a second judgment threshold, or the angular acceleration is greater than 0 and the angular velocity absolute value is greater than or equal to a first judgment threshold, entering a full-angle mode; cutting off the control force applied by the force balance loop according to the force balance PID controller to enable Cp to be equal to 0, and calculating and outputting angular velocity increment; hybrid control of a force balance mode and a full-angle mode is realized according to the input angular velocity of the carrier.

The invention discloses an automatic contextual model switching method for a mobile terminal and the mobile terminal. The method comprises the steps of automatically turn on a front-arrangement camera after the mobile terminal receives the unlocking operation; recognizing whether an image obtained by the front-arrangement camera is a face or not, turning off the front-arrangement camera when the recognition result is yes, and switching the contextual model of the mobile terminal to the second contextual model from the first contextual model; judging whether the mobile terminal receives the operation or not, if yes, deciding whether the contextual model is switched back to the first contextual model by a face recognition module when the non-operation time reaches the first duration, and if not, screen locking is performed, and whether the contextual model is directly switched to the first contextual model or not is judged. Automatic switching of the contextual models can be achieved by combining the face recognition technology and the function of the front-arrangement camera of the mobile terminal, and whether a user improves the accuracy of automatic switching of the contextual models by using the mobile terminal or not is judged.

The invention discloses an air tightness detecting device and a servo control method thereof. The air tightness detecting device comprises a first gas source, a first pressure sensor and a first proportional servo valve. The first gas source and the containing cavity of a first object to be detected are connected by a first proportional servo valve. The first pressure sensor is connected to the containing cavity of the first object to be detected and is used for detecting the pressure in the containing cavity of the first object to be detected so as to judge the air tightness of the containing cavity of the first object to be detected. The first pressure sensor is also connected to the first proportional servo valve and is used for adjusting the state of the first proportional servo valve. Through improving control loop design and a server control process, the problems of the low accuracy of a direct pressure testing method and the inconvenient operation of a differential pressure test method are solved effectively, according to the device and the corresponding servo control method, the opening of an electro-pneumatic proportional servo valve is controlled through a closed-loop system to control the flow of gas in the loop, and the air tightness of the system can be detected.

The invention discloses a power supply safety protection system. A fault prediction circuit receives a voltage signal of a main power supply phase line L induced by a voltage transformer, a voltage change rate is calculated when the voltage signal exceeds an allowable deviation for 7%, and a failure is predicted when the voltage signal exceeds an allowable deviation for 9%. At that time, in one path, a normally closed switch K1-1 is controlled to be delayed and switched off, a normally closed switch K1-2 is switched on, a main power supply is delayed and switched off, and a charge storage pumpcircuit temporarily supplies power to a load. In another path, a normally closed switch K2-1 is controlled to be delayed and switched off, and a backup power supply is started. When the fault prediction is normal, the charge storage pump circuit allows the charging of an energy storage circuit and electric energy storage, the voltage is transformed into AC220V by a boosting circuit, and the loadis powered when the failure of the main power supply is predicted. A short circuit determination circuit detects current flowing through the load through a current transformer, when short circuit occurs, transistors Q3 and Q4 form a composite tube for conduction, a relay K3 coil is energized, both normally closed contacts K3-1 and K3-2 are disconnected, and the main power supply, the backup powersupply and the charge storage pump circuit do not supply power to the load.

An improved leash device for pets that includes a tongue for insertion into a seat belt is described. The tongue may be designed to fit any vehicle safety belt buckle to allow a user to secure their pet to their vehicle for travel. The user may operate the device by moving a safety belt tongue from inside the housing of the leash device. When the tongue is moved outside the housing, it may be inserted into the buckle attached inside the vehicle to keep the pet safe during vehicle movement. The leash device may also include a retractable leash mechanism with a lock button for alternatively allowing or preventing the extension / retraction of the leash. A button hood may be provided to prevent accidental toggling of the lock button.

The invention relates to an electric generator static excitation device multi-slave redundancy protection method. A host machine, a standby machine and a slave machine are adopted for realizing redundancy protection, and are connected with one another by adopting a CAN bus; the redundancy protection is characterized by automatically switching to the standby machine or the slave machine when the host machine is failed, and switching to the slave machine only if the standby machine is stayed in a failure state; automatically switching to the host machine or the slave machine when the standby machine is failed, and switching to the slave machine only if the host machine is stayed in a failure state; switching to the host machine or the standby machine from the salve machine only if the host machine or the standby machine is stayed in a non-failure state, otherwise, switching the slave machine to a next stage or ignoring the slave machine. The electric generator static excitation device multi-slave redundancy protection method provided by the invention has the beneficial effects that through a multi-slave redundancy switching mode, a control unit and a power unit are integrated, the simplicity and the convenience in switching are realized, the switching is undisturbed switching, meanwhile, the convenience in maintenance without power failure is realized, and when failure happens, the slave machine can replace the host machine in the same valve position.

The invention provides a mobile internet protocol version 6 (IPv6) access method based on orbit information prediction and mainly solves the problem that an asynchronous orbit spacecraft accesses to a measuring and controlling station in a mobile IPv6 mode. The mobile IPv6 access method for predicting based on the orbit information is adopted, and the access time between the spacecraft and ground base stations is predicted by comprehensive beforehand calculation of the orbit information of the spacecraft, the accurate location information of ground stations and the measuring and controlling coverage area. The spacecraft dominates the switching and access to the ground base stations according to the access time, a data link layer is firstly controlled to switch, and after the switching is finished, a network layer is triggered to begin to switch, thus finishing the switching of the spacecraft and having access to a new ground base station. In the switching process, frequent signal scanning and information interaction between the spacecraft and the ground base station are avoided, and the communication burden of the spacecraft is especially reduced.

The invention discloses a process method of GSM cell switching, comprising the steps of: judging whether the cell is taken as a candidate switching object cell according to that whether the duration time that the receiving level of the adjoining cells is higher than a preset value is over a set threshold value T; and if the duration time is over the threshold value T, the cell is taken as the candidate switching object cell. The invention also discloses a process system of GSM cell switching. By judging whether the duration time that the receiving level of the adjoining cells is higher than the preset value is over the set threshold value T when switching, the invention can prevent from taking the cell which generates short strong signals caused by signal leakage and drift under some special scenes to be as the candidate switching object cell, thus preventing from error switching caused thereby.

The present invention relates to a controlling method for the switch between a principal device and a subordinate device in a redundant system, which at least comprises a principal server object, a client object, a standby server object, a principal working channel connected between the principal server object and the client object and a standby working channel connected between the standby serverobject and the client object. The principal server object is connected with the standby server object through a monitoring communication connecting manner. The present invention is characterized in that: when the principal and standby server communicates normally, the principal server object transmits initiatively an switching control order to start the switch between the principal device and subordinate device according to the fault signal of principal working channel running state; when the principal server object and the standby server object communicates unsuccessfully, the standby working channel starts the switch between the principal device and subordinate device according to the fault signal of monitoring principal working channel running state. Compared with the prior art, when the judgment that whether to switch the principal and subordinate device is made, the present invention not only considers the running states of both the principal server object and the principal working channel but also provides a method for judging the self running state of the principal server object and the running state of the principal working channel. Compared with the prior art, the presentinvention is a redundancy switching controlling mechanism which is safer and more perfect.

A proximity switch system that includes a self-contained power consuming device and a power source in electrical communication with the power consuming element across a magnetic proximity switch is disclosed. The proximity switch system includes an external magnet removably coupled to the magnetic proximity switch. A method of storing and / or transporting a proximity switch system is also disclosed. The method includes providing the proximity switch system and removably coupling an external magnet to the magnetic proximity switch in a position to prevent the magnetic proximity switch from inadvertently switching on.

The invention discloses a method for controlling USB channel switching. The method comprises the following steps: 1, monitoring the access condition of main equipment of a USB switcher; 2, when it ismonitored that there is a newly accessed master device on the USB switcher, judging whether there is an earlier accessed master device on the USB switcher, and if there is an earlier accessed master device on the USB switcher, executing the step 3; 3, judging whether the master device which is accessed earlier uses each slave device or not, and if not, executing the step 4; 4, sending a switchinginstruction to the USB switcher to enable the USB switcher to switch and connect each slave device to a newly accessed master device. According to the method, the problem of wrong switching when the next speaker accesses the next main device in advance to save time during switching according to a first-in-first-out strategy after use can be avoided. The invention discloses a device for controllingUSB channel switching.

A method of combining a channel quality estimate for the radio channel based on direct measurement of carrier and interferer energies, and a channel quality estimate for the radio channel based on channel decoder metrics, to obtain a final channel quality estimate in terms of carrier-to-interference (C / I) ratio for the radio channel, which is more reliable, consistent and accurate than that obtained with the individual methods. After computing a direct channel quality estimate and a decoder metric-based channel quality estimate for the radio channel, confidence levels, P(direct), P (metric), are assigned to the two estimates. P(direct) is multiplied with the direct channel quality estimate and P(metric) is multiplied with the decoder metric channel quality estimate. The respective products are added to obtain the final channel quality estimate in terms of the carrier-to-interference (C / I) ratio for the radio channel.

A yarn winding apparatus and an operation original location adjusting method are provided, the winding unit as an operation unit which includes the opening and closing member, the guide screw, bolt, the movable cylinder, connector means for guiding the upper yarn catching member, the lower yarn capture guide member and the gate line, so that these movements and operation of winding the yarn winding operation mode, and for maintenance operation portion is stopped leaving a pattern in maintenance mode operation. In a winding unit, in the winding from the maintenance mode to the operation mode for the take-up unit is the operation of the operation unit to adjust the home position, and then starts winding the yarn. In addition, when having a plurality of winding units of an automatic winder a power is turned on, all of the winding unit, for the operation of the operation unit to adjust the origin position. A plurality of operation unit to adjust the operation of the home position is not the same time, and each part to a predetermined order.

The invention relates to a frequency point switching method and a device, a storage medium and wireless equipment, and aims to accurately perform frequency point switching to avoid interference and effectively reduce wrong switching. The frequency point switching method comprises the following steps: determining parameter values of an electromagnetic environment where a transmitting end and a receiving end are located currently, wherein the parameter values at least comprise a signal-to-noise ratio (SNR) actual value and a receiving power actual value Pr of the receiving end; determining a receiving power theoretical value in a no-interference environment and a signal-to-noise ratio theoretical value in the no-interference environment on the condition of the current actual distance betweenthe transmitting end and the receiving end; and triggering frequency point switching when the difference value between the signal-to-ratio theoretical value and the signal-to-ratio actual value exceeds a signal-to-noise ratio error allowable range Sc and the difference value between the receiving power theoretical value and the receiving power actual value Pr is in a receiving power error allowable range Pc, so that the working frequency points at the receiving end and the transmitting end are synchronously switched to a target frequency point.

The invention discloses a multi-client node-based system instruction authority switching method. Researches on safe switching, especially switching of system instruction authority in multi-operation terminal application fields such as the naval architecture and ocean engineering industry are rarely disclosed. The method includes the following specific steps of: client node configuration and networking; instruction authority state identification of each client node which includes the steps of instruction authority acquisition and instruction authority rendering; and instruction authority switching which further includes the step that each client node on the Ethernet performs instruction authority request and transfer according to actual operational needs. According to the multi-client node-based system instruction authority switching method of the invention, application configuration of existing terminals are not needed to be largely modified, and instruction authority switching can be transplanted based on the configuration of actual application systems.

Embodiments of the invention disclose an Internet protocol security (IPSEC)-based tunnel switching method and device, and a gateway. The method comprises the steps that the gateway detects a state ofa main tunnel, if the main tunnel is in an abnormal state, the gateway waits for a preset time period; then the gateway detects a state of the main tunnel again; and if the main tunnel is in the abnormal state, the main tunnel is switched to a standby tunnel. Through adoption of the tunnel switching method, false switching caused by network shock and other states can be prevented, main tunnel-based communication is continued as much as possible, unnecessary switching consumption is reduced, and adaptive adjustment and other problems caused by switching are solved.