35results about How to "Prevent random changes" patented technology

The embodiment of the invention discloses a method and terminal for adjusting screen brightness. The method comprises the following steps that a request for adjusting the screen brightness is received; a current running application program is detected; whether the current running application program has screen brightness adjusting permission or not is judged; if yes, screen brightness is adjusted according to a preset screen brightness adjusting rule of the application program. By adopting the method and terminal for adjusting the screen brightness, when a certain application program runs, a user can adjust the screen brightness by himself / herself or the application program automatically adjusts the screen brightness according to the preset screen brightness adjusting rule only when the running application program has the screen brightness adjusting permission, and random screen brightness change during application program running is prevented.

The invention discloses a self-locking float level switch. The self-locking float level switch comprises a non-magnetic pipe, a reed switch, a cylindrical passive float barrel, a float ball, a retainer, an upper magnetic limiting plate, a lower magnetic limiting plate and inner magnets. The cylindrical passive float barrel externally sleeves the non-magnetic pipe, the float ball externally sleeves the cylindrical passive float barrel, the retainer is arranged at the bottom end of the non-magnetic pipe, the upper magnetic limiting plate and the lower magnetic limiting plate are arranged at upper and lower ends of the cylindrical passive float barrel respectively, and the inner magnets are detachably arranged in the non-magnetic pipe. An annular magnet is hermetically arranged in the upper magnetic limiting plate, and the upper magnetic limiting plate is in positional correspondence to the reed switch under a contacted state of the bottom of the float barrel and the retainer. Independent magnets are arranged in the lower magnetic limiting plate, and opposite poles of the inner magnets in the non-magnetic pipe and the independent magnets in the lower magnetic limiting plate are identical in polarity. The self-locking float level switch has advantages that a self-locking effect can be achieved; due to a completely stable float magnetic field system, the float ball is prevented from fluctuating along with water level, magnetic field random variation is prevented, peripheral control circuit simplification is realized, and stability in operation of an execution electric appliance is achieved.

An image file verification method includes: loading the record including a image file ID and characteristic value; calculating the characteristic value of the image file corresponding the file ID; judging whether the characteristic value recorded in the file match the calculated characteristic value; and if matches, then the verification is passed, otherwise the verification is failed. An image verification apparatus includes: a characteristic value load module, an image file load module, a characteristic value calculating module and a characteristic value comparing module. The technical scheme provided can prevent the image file from being altered arbitrarily.

The invention relates to a data processing method and system and a storage device controller. In the method, firstly, providing a storage device coupled to a host; issuing a write-in instruction including a logic access address and first data to the storage device by the host and judging whether the logic access address to be written in the host is one of logic access addresses of file system information; and writing second data into the storage device by the storage device in preset time when the logic access address to be written in the host is one of the logic access addresses of the file system information, wherein the second data is different from first data.

The invention provides a method and apparatus for examining coupling of calibration quantity and configuration quantity for a vehicle fan, and relates to the vehicle fan examination field. The method comprises outputting a drive signal to a chip pin which controls a vehicle fan; according to the drive signal, determining whether the chip pin is connected with the vehicle fan; if so, setting the value of the configuration quantity as a preset value; and determining whether the value of the calibration quantity is equal to the preset value, and if so, completing examination about coupling of the calibration quantity and the configuration quantity for the vehicle fan. The method for examining coupling of calibration quantity and configuration quantity for a vehicle fan utilizes an ECU (Electronic Control Unit) to automatically identify the fan type for finished automobile configuration, and can examine whether the fan type is coupled with the current selected control data so as to avoid data error caused by manual hand mal-flashing.

The invention discloses a prestress steel strand coil fixing paying-off device. The prestress steel strand coil fixing paying-off device comprises a main frame, a longitudinal connecting rod set, a third vertical supporting rod set and an auxiliary support. The main frame is composed of an upper transversal connecting rod set, a lower transversal connecting rod set, a first vertical supporting rod set, a second vertical supporting rod set, a first connecting rod set and a second connecting rod set. The auxiliary support is formed by connecting the longitudinal connecting rod set, the third vertical supporting rod set and a first transversal connecting rod which is perpendicular to the longitudinal connecting rod set and the third vertical supporting rod set, and the longitudinal connecting rod set, the third vertical supporting rod set and the first transversal connecting rod are located in the same plane. The first transversal connecting rod is provided with a strand clamping and limiting device, and a second transversal connecting rod is provided with a length measuring instrument. Vertical supporting rods of the whole support system are connected with universal wheels. The invention further discloses a manufacturing method of the prestress steel strand coil fixing paying-off device. The prestress steel strand coil fixing paying-off device can guarantee safe and reliable paying-off and has the advantages that the prestress steel strand coil fixing paying-off device can measure the length of the paid-off strand, can be moved and repeatedly used, and has the strand clamping function.

The invention provides a moving device of a pull head. Only a part is used for locking the pull head and a special drive source is not required, so that the structure is simple and the cost is low. The device comprises a body (10), an arm (2) and a spring, wherein the arm (2) can be supported in a rotary mode relative to the body (1), the spring can push and press the arm (2), the body is provided with a channel (13) through which a long zip of a zip can move, the arm is provided a base (21) which can be supported on the body in a rotary mode, a front end portion (23) which is arranged on the opposite side of the base and a middle portion (22) which is arranged between the base (21) and the front end portion (23), the front end portion is provided with a first projection (24), and the middle portion is provided with a second projection (27). When the arm is pushed and pressed by the spring and moves to a position which is close to the channel, the pull head (4) is hooked by the first projection, when a lower stopper abuts against the second projection, the second projection is pushed upwards by the lower stopper, the arm resists the press of the spring and moves to a position which is far away from the channel, and the first projection is unhooked with the pull head.

The invention relates to a range-adjustable device for measuring small pushing force of an engine. The range-adjustable device comprises a base, a vertical beam, a step supporting shaft, a bearing, a transverse beam, a propellant storage box, a balance weight, an electric cabinet, a force sensor, a force sensor fixing support, a signal processing unit and a computer. The range-adjustable device is characterized in that the bearing structure is adopted, the dead load of the engine is balanced by the balance weight, the range is changed by changing a specific value of a force arm of the engine to a force arm of the sensor, a propellant pipe is directly connected with the step supporting shaft, propellants flow through a propellant flowing way of the step supporting shaft, and influences of the propellant pipe and a control line on the accuracy are eliminated by reducing the force arm. When the measured pushing force is changed from the micro-Newton order to the milli-Newton order, the null point drifting is smaller than +-0.5%F.S. per hour, steady state measuring errors are smaller than +-1% of the full range, and the dynamic response delay time is shorter than 15 ms. The measuring device is simple and reliable in measuring process, good in repeatability and capable of meeting the requirement for measuring the small pushing force of the engine.

An anti-collision conveyor belt protection device for furniture production, including a support plate, a bar-shaped groove is set on the right side of the support plate, and a lead screw is rotated in the bar-shaped groove. The upper and lower sides of the upper and lower sides are respectively threaded to install the nuts, the right sides of the outer circumference of the nuts are respectively fixedly connected to the left side of the slide plate, and the right sides of the slide plate are respectively provided with vertical sleeves, the first one-way valve is fixedly installed in the sleeves, and the left side of the support plate The side is fixedly connected to the right side of two gears distributed up and down, and the middle of the opposite side of the gears is respectively connected to the inner end of the vertical pipe by bearing rotation, and the second one-way valve is fixedly installed in the vertical pipe respectively. The present invention can adjust the shape of the clamping surface formed by the support plates according to the shape of the transport furniture, and can assemble the number of support plates arbitrarily according to the size of the transport furniture, and at the same time, the spliced ​​support plates can be folded to facilitate the placement of the support plates , can meet the market demand and is suitable for promotion.

An electronic invoice issuing method provided by the present invention includes that the invoice issuing terminal sends an authorization request to the tax server before issuing the invoice, and the tax server generates an authorization code according to the authorization request and feeds it back to the invoice issuing terminal; the invoice issuing terminal issues an authorization code after receiving the authorization code. Electronic invoices, and transmit the issued invoice information and the verification code generated while issuing the current invoice to the tax server, and set the verification code on the face of the invoice, which can effectively prevent false issuance and counterfeit invoices during the invoicing process It is also beneficial to check the invoice after it is issued, so as to further prevent the occurrence of false invoices and counterfeit invoices.