33results about How to "There will be no misjudgment" patented technology

The invention discloses a test platform and a method for testing a printed circuit board, wherein, the test platform comprises: a processor, a universal test board and a placing table of the printed circuit board PCB, wherein, the processor is used for storing test procedures, when in test of the PCB, the processor introduces the test procedure corresponding to the PCB to the universal test board and receives digital test parameters or test result sent by the universal test board; the universal test board is used for carrying out the test of the corresponding test point of the PCB which is arranged on the placing table of the PCB according to the test procedure received from the processor and outputting the obtained digital test parameters or the test result to the processor after the completion of the test; and the placing table of the PCB is used for placing the PCB. Therefore, the test platform and the method can realize the test of the PCB with the same function and different types or the PCB with the different functions, thereby avoiding the shortcomings of longer setting period of the test platform, high test cost and low test efficiency.

The invention provides a dual-computer hot standby method based on a quorum diskmechanism. The dual-computer hot standby method based on the quorum disk mechanism is used for achieving backups of a plurality of servers. The servers compete with one another to obtain the right of control over an quorum area of a storage node, the server which successfully obtains the right of control over the quorum area becomes an active server, and the other servers are set to be backup servers. The active server updates a heartbeat value regularly, and the backup servers read the heartbeat value regularly. If the heartbeat value is not changed in a time period, it is determined that the active server is halted, the backup servers compete with one another again to obtain the right of control over the quorum area, and then a new active server is determined. The dual-computer hot standby method based on the quorum disk mechanism can accurately judge the working state of the active server, avoid misjudgment and the brain laceration situation, and ensure service continuity.

The embodiments of the invention disclose a parameter calibration method for a range sensor and a terminal. The method comprises the steps of: acquiring the current working state of the range sensor, wherein the working state comprises an approaching state or a leaving state; if the working state is an approaching state, acquiring a first original data value of the range sensor, wherein the first original data value expresses the reflected infrared strength value detected by the range sensor; detecting whether the first original data value is greater than a preset threshold, wherein the preset threshold is the sum of a preset base noise value, an approaching state judgment threshold and a preset oil stain value; and if the first original data value is greater than the preset threshold, calibrating the preset state judgment threshold. When oil stains are present on an IR hole surface, the approaching state judgment threshold and the leaving state judgment threshold can be calibrated, so that based on the threshold obtained by calibration under an oil stain environment, an object can be accurately judged to leave the range sensor, and the accuracy of range detection is improved.

The invention provides a method for detecting sound recording equipment. The method comprises the following steps of 1, playing a preset sound source signal by virtue of playing equipment, recording the section of sound source signal by virtue of the sound recording equipment to be detected, and sampling the sound source signal, wherein the frequency, amplitude and phase of the sound source signal are set values; 2, converting sampled data from the time domain to the frequency domain to obtain the frequency, amplitude and phase of each audio frequency point in the sampled data; 3, comparing the frequency, amplitude and phase of each audio frequency point in the sampled data with the frequency, amplitude and phase of the sound source signal, determining that the sound recording equipment to be detected is qualified if the frequency, amplitude and phase of each audio frequency point in the sampled data are completely consistent with the frequency, amplitude and phase of the sound source signal, and determining that the sound recording equipment to be detected is disqualified if an audio frequency point with inconsistent frequency, amplitude and phase exists. The invention also provides a system for detecting the sound recording equipment. According to the method and the system, the condition of misjudgment of a sound recording interface of the sound recording equipment is avoided, the detection accuracy of the sound recording equipment is higher, a sound recording test is automatically realized, and a test result can be automatically judged and displayed.

The invention includes steps: selecting outer ring with deep channel of ball bearing in relevant near type under same curvature and diameter of channel; measuring size of channel position of ball bearing with deep channel precisely; after calculating filtration obtains standard component of channel position for outer ring of angular contact ball bearing; using channel position checking-gauge for ellipticity of channel diameter of ball bearing carries out detection of channel position for batch products by reading meter under same instrument through method of comparison. Characters are: (1) changing observational measurement to quantitative measurement; (2) easy of operation, quick measuring and visual display; (3) high precision; (4) reflecting real deviation of channel position; (5) saving cost for preparing template.

The water leakage protector for drinking water machine includes one sensor set in the site with highest water leakage possibility to send out water leakage signal; one detection circuit to send warning and controlling signal based on the water leakage signal from the sensor; one protecting and warning device to shut off the water inlet valve to the drinking water machine on receiving the warning and controlling signal from the detection circuit; and one power input for providing work power source to the sensor, the detection circuit and the protecting and warning device. The present invention can shut off the water inlet valve and send warning signal in case of water leakage.

The invention relates to a method for judging whether a robot collides with a virtual wall or not, a chip and an intelligent robot. Pre-judging areas are arranged on the two sides of the virtual wallso that when the robot enters the pre-judging areas, whether the robot collides with the virtual wall or not can be accurately judged with the combination of the current direction of the robot and therelation between the straight line distance between the robot and a contrast point and the straight line distance between the contrast point and the center point of the virtual wall, the judgment isnot likely to be subjected to external environment interference, the misjudgement condition is avoided, and accuracy is very high.

The invention relates to the technical field of automobile detection, and discloses an automobile axle distance measuring method. The method adopts non-contact measurement, and comprises the followingsteps of scanning the head of an automobile by using a first laser radar and scanning the side body of the automobile by using a second laser radar in an automobile advancing process; and combining data measured by the first laser radar and data measured by the second laser radar to obtain three-dimensional coordinate data of the automobile, converting the three-dimensional coordinate data to obtain a two-dimensional graph of the side surface of an automobile tire, finally processing a two-dimensional graph to obtain the position and a contour of the automobile tire, and calculating to acquire the axle distance of the automobile. The measurement process is more convenient and efficient, the measurement result is not affected by other parts of the automobile, the measurement result is moreaccurate, direct judgment and output can be achieved, and the method can be suitable for vehicles of various brands and models.

The invention discloses a matrix circuit and a scan method. The matrix circuit is used for accurately detecting the state of keys or switches, and comprises a matrix circuit body with N line wires (L1...Ln) and N column wires in cross arrangement, the matrix circuit body is provided with N*N keys (S11...Snn), N is a natural number larger than 0, the matrix circuit further comprises N*N diodes (D11...Dnn), the diodes comprise anodes and cathodes, one end of each line wire and one end of each column wire are respectively provided with an I / O pin, the line wires and the column wires are arranged in a staggered mode to form N*N cross points, one key and one diode are arranged on each cross point, one ends of the keys have access to the I / O pins of the line wires, the other ends of the keys have access to the anodes of the diodes, and the cathodes of the diodes have access to the I / O pins of the column wires. According to the matrix circuit and the scan method, the mutual interference between the keys or the switches can be avoided, the detection carried out when the keys or the switches are simultaneously turned off is supported, meanwhile, power consumption is low in the operating process, and the use of an embedded system is facilitated better.

The invention relates to an airtightness detection method of a soft package lithium battery. The airtightness detection method of the soft package lithium battery comprises the following steps: putting a battery cell into a battery cell area, and putting an air bag into an air bag area; packaging a top sealing region, a side sealing region and a first sealing region; puncturing the air bag area, and pumping out air in the air bag area; extruding the air bag to break the air bag so as to release the detected gas; guidingthe detected gas released by the air bag to the battery cell area; packaging a secondary packaging area; and detecting whether the detected gas escapes from the soft package lithium battery or not. According to the airtightness detection method for the soft package lithium battery provided by the invention, the airbag internally containing the detected gas is placed in the airbag area of the aluminum-plastic shell, the airbag is crushed after the airbag area is subjectedto air exhaust, the detected gas is guided to the battery cell area, and then the secondary sealing area is packaged to obtain the soft package lithium battery, so that airtightness detection is carried out on the soft package lithium battery; the result of the packaging effect of the soft package lithium battery can be directly obtained, the detection precision is high, and the missed judgment phenomenon is avoided.

A frequency converter disclosed by the present invention comprises a cabinet, the front surface of the cabinet is fixedly provided with a front cover plate, the front cover plate is composed of a terminal cover plate and an upper cover plate, the front surface of the upper cover plate is fixedly provided with a controller, and the lower position between the two sides of the inner wall of a magnet vane is fixedly provided with an aluminum profile partition plate. A plurality of heat dissipation grooves are formed in the bottom of the aluminum profile partition plate at equal intervals. According to the frequency converter, a first vertical electromagnetic shielding structure, a transverse electromagnetic shielding structure and a second vertical electromagnetic shielding structure can be independently installed, after installation is completed, the first vertical electromagnetic shielding structure, the transverse electromagnetic shielding structure and the second vertical electromagnetic shielding structure can be in a series connection power-on state, and when one of the structures is damaged, only the damaged part needs to be replaced without completely disassembling and replacing, so that the maintenance cost is reduced, and the waste of resources is favorably avoided.

According to a seat safety belt monitoring method, a seat safety belt monitoring system is used for monitoring a seat safety belt, and the seating condition of a person on each seat is detected through a seat sensor and a safety belt sensor arranged on the seat; and a driver is reminded to accurately find a seat without a safety belt through state changes of a seat sensor indicator lamp and a safety belt sensor indicator lamp, the judgment rate is not affected by external factors, and the situation of misjudgment is avoided. According to a seat safety belt sensor fault detection method, the seat safety belt monitoring system is used for carrying out seat safety belt sensor fault detection, fault detection is carried out on a seat sensor through the seat sensor indicator lamp, and fault detection is carried out on a safety belt sensor through the safety belt sensor indicator lamp.

The invention provides an intelligent navigation method for overpass bridges on the basis of RFID. The method includes steps of: 1) acquiring an electronic map, and planning a driving route accordingto preset start and destination; 2) determining the property of the present road, which includes non-overpass roads and overpass roads, and if the present road is a non-overpass road, performing navigation by using GPS positioning signal with combination of the driving route, and if the present road is an overpass road, receiving a radio-frequency signal, which includes the number of a present ramp and is sent by an RFID tag arranged on the overpass bridge, by means of an RF antenna, and performing navigation with the GPS positioning signal, the number of the ramp and the driving route. In theprior art, positioning precision of the GPS positioning signal is about 10 m, so that incorrect navigation even navigation mistake may occur at a place where overpass bridges are concentrated. The method in the invention is used for assisting the GPS positioning signal to perform precise navigation.

The invention discloses a visual auxiliary material intelligent recognition system. The recognition system comprises a camera device used for collecting product photos; the image recognition module isused for recognizing product colors and judging product models; the image analysis and calculation module is used for analyzing front and back information of the product in the photo; and the outputmodule is used for outputting and displaying product color, model, front and back information. The invention relates to a visual auxiliary material intelligent recognition system. According to the system, corresponding data of a product is recorded in a machine learning mode; during use, the product information can be automatically collected, the model information of the product and the front andback information of the product can be recognized, the recognition intelligence degree is higher, the production labor force is greatly saved, misjudgment does not exist in judgment of a machine, thejudgment accuracy is guaranteed, and the error rate of product production and processing is reduced.

The invention provides a control method for washing equipment, belongs to the technical field of washing equipment, and aims to solve the problems that a user cannot accurately master the allowance ofconsumables, the consumables are possibly used up and cannot be purchased in time, and the use experience of the user is influenced. The washing equipment comprises a consumable putting device, and the control method comprises the following steps of obtaining the total amount of consumables; obtaining the accumulated feeding amount of consumables fed by a consumable feeding device; and if the difference value between the total consumable amount and the accumulated consumable feeding amount is smaller than or equal to the preset value, enabling the washing equipment to send out prompt information. By means of the arrangement, when the consumables are about to be used up, the washing equipment can send out prompt information to remind a user to purchase the consumables in time, and the useexperience of the user is improved.

The invention relates to a glass edge defect detection method which comprises the following steps: placing glass in parallel, and spacing two adjacent pieces of glass by adopting a spacer to form a glass stacking column; conveying the glass stacking column to a darkroom, wherein light irradiates one side of the glass stacking column and penetrates through the glass stacking column; and observing the glass stacking column from the side, away from the light irradiation end, of the glass stacking column, determining whether defects exist or not, if the defects exist, the position of the glass with the defects is determined according to the glass stacking column, and if the defects do not exist, detecting the glass to be qualified. The method for detecting the glass edge defects can effectively detect the glass edge defects, cannot miss small-size defects, improves the product quality, and is very convenient to operate.

The invention provides a method and device for preventing eyeglass collision, which reasonably arranges the moving sequence of the eyeglass through judging the moving direction of the eyeglass, thereby achieving the effect of preventing eyeglass collision. Moreover, the device for preventing eyeglass collision can also be additionally provided with a detecting module so as to guarantee, has a simple and reliable structure, does not need strict limitation on the mechanical mounting conditions, and dose not make erroneous judgments, does not conduct faulty operations which causes movable eyeglasses to be destroyed during the power-off assembling and adjusting process and simultaneously can reduce the maintaining and repairing costs.

The invention discloses a method and system for detecting an incredible search path loophole. The method comprises the following steps of configuring detection parameters of target software; generating corresponding test files on the basis of file types supported by the target software; opening the test files one by one, and starting a target process; according to a return value of a DLL loading function of the started target process when the test files are opened, judging whether or not the incredible search path loophole exists. According to the scheme, the accuracy and comprehensiveness ofloophole detection are improved.

The invention relates to the related field of automobile data recorders, and discloses an automobile data recorder device capable of self-adapting and adjusting jolt detection sensitivity. The devicecomprises a main body box, a jolt detection cavity with a leftward opening is arranged in the main body box, and the right end wall of the jolt detection cavity is connected with a trigger cavity; andan adjusting rod connecting with the left end wall of the triggering cavity is connected with the tail end of the right side of the lower end wall of the jolt detection cavity, and a friction wheel cavity with a leftward opening is connected with the left end wall of the adjusting rod. Through a self-adaptive detection rod in the device, a jolt degree of an automobile in the daily driving processcan be automatically detected, and meanwhile, a detection magnetic block is matched, sensitivity of automobile jolt alarm triggering is automatically adjusted so that an accurate sensitivity value most suitable for daily driving can be obtained. The automobile data recorder is ensured not to misjudge in the daily driving process of the automobile, the automobile data recorder can judge accidentaljolt more accurately, and frequent and rough manual adjustment operation is also omitted.

The invention relates to a virtual machine anti-cerebral fissure management method, a main server, a cloud computing system and a computer readable medium. The method comprises: when a main server detects that a first virtual machine on a first server cannot work normally, creating a second virtual machine on a second server, and making the second virtual machine to obtain the access permission ofa storage volume corresponding to the first virtual machine; and the main server instructing the second server to read the state information in the storage volume, and determining whether to start the second virtual machine according to the state information. According to the method, the virtual machine cerebral fissure can be better prevented, and the reliability is high.