46results about How to "Reduce the possibility of false positives" patented technology

The invention discloses a quality monitor soft sensing method based on a rubber mixing process. An upper subsidiary engine, an automatic sampling system, a quality inspection system and a Mooney viscosity on-line automatic measurement model on a rubber mixing production line are automatically associated; the automatic sampling system carries out quality inspection sample acquisition on a current production train number and transmits the sample to the quality inspection system to obtain rheological parameters required; current rheological parameters are transmitted to the Mooney viscosity on-line automatic measurement model, and a Mooney viscosity value ynew is automatically output according to f: x->y; the Mooney viscosity value ynew is read out and transmitted to the quality inspection system, which will carry out corresponding technical adjusting on mixing process of a subsequent train number, according to contrast of the Mooney viscosity value ynew and a preset Mooney viscosity value scope, so as to automatically detect whether a new production task is for the production line. The invention saves a large amount of costs on purchasing and maintaining a Mooney viscometer and avoids huge labor and material resources required by a traditional Mooney viscometer measurement method.

The invention discloses a black smoke vehicle detection method based on a self-organizing background difference model and a multi-feature fusion, which comprises the following steps: detecting a moving object from a video surveillance by using the self-organizing background difference model, and determining a key area; transforming the key region image into YCrCb color space and extracting the color moment feature; transforming the key regions into gray space, and extracting the local ternary mode histogram and edge direction histogram; according to the position of the key region of the current frame, extracting the corresponding regions of several frames from the whole frame sequence, concatenating the same features extracted from all the temporal regions to form the feature vectors of each class, and normalizing the feature vectors of each class to form the final feature vectors; classifying the final eigenvectors by using the pruned radial basis function neural network classifier; identifying the key areas of smoke and further identifying the smoky vehicles. The invention can further improve the identification rate, reduce the false alarm rate, and has good identification effecton smoky vehicles with relatively light black smoke.

The invention provides a high-reliability socks knitting machine. A broken yarn detection sensor is additionally arranged; the device can be used for reasonably distributing yarns and the detection sensitivity is guaranteed; the high-reliability socks knitting machine is compact in structure, and a broken needle detection device has relatively high sensitivity, can be used for detecting a broken needle phenomenon without axial movement and can automatically quit when detection is not needed; a limited socks knitting working region does not need to be excessively occupied, and broken needle and broken yarn phenomena are effectively detected, so that the reliability of the socks knitting machine is improved, the generation of defective products is reduced and the production cost is reduced; meanwhile, the high-reliability socks knitting machine is relatively simple to design, mount and debug, and is relatively high in stability and reliability. The high-reliability socks knitting machine comprises a yarn feeding mechanism for supplying yarns to a knitting mechanism, and a control mechanism for controlling the knitting mechanism, wherein the yarn feeding mechanism comprises a yarn rack, a plurality of supporting plates which are arranged on the yarn rack, are used for storing a bobbin seat and are sequentially distributed from bottom to top, a sensor set arranged above the supporting plate on the uppermost layer, and a yarn guide rod arranged above the sensor group; and the knitting mechanism is provided with the broken needle detection device.

The invention relates to the technical field of fire fighting equipment, in particular to a fire fighting and fire extinguishing system. The fire fighting and fire extinguishing system comprises a storage bottle, an alarm apparatus, a baffle, a wax sealing block, a drawing rope and a reversing wheel, wherein an opening of the storage bottle faces the ground, the baffle is hinged to the storage bottle, the free end of the baffle can rotate around a hinging shaft under the effect of gravity, the wax sealing block is laid on the ground and can be molten at the predetermined temperature, one end of the drawing rope and the free end of the baffle are assembled together, the other end of the drawing rope is fixed by the wax sealing block, and the reversing wheel is used for the drawing rope to rotate around for reversing. When a fire breaks out, the temperature of the ignition point rises, the wax sealing block is molten, thus the drawing rope is loosened, at this moment, the baffle rotatesaround the hinging shaft under the effect of its own gravity, then the opening of the storage bottle is opened, and the alarm apparatus is started, so that a fire extinguishing agent in the storage bottle is released to carry out fire extinction motions, and the start of the alarm apparatus can warn the staff of the fire. Compared with smoke alarm apparatuses in the prior art, the fire fighting and fire extinguishing system controls the start of the alarm apparatus and the opening of the storage bottle through the melt of the wax sealing block, and the possibility of false alarming is lowered.

The invention discloses an arc light protection device which comprises an arc light probe which is used for collecting arc light generated during short circuit discharge of a bus joint and further exciting the arc light to be fluorescence for outputting, or used for detecting visible light generated by ambient light leakage and outputting the visible light; an optical fiber which is connected withthe arc light probe through a connector and is used for transmitting the fluorescence or visible light output by the arc light probe, and a control terminal which is communicated with the optical fiber through the connector, and the fluorescent light and / or the visible light transmitted by the optical fiber is input into the control terminal, When the control terminal identifies that fluorescentlight and / or the visible light is caused by short circuit discharge of the bus joint or by ambient light leakage, a power supply protection bus is cut off or an alarm signal of a protection system fault is sent respectively. The device provided by the invention has all functions of a traditional arc light protection system, and all advantages of a traditional device are maintained. The stability of the arc light protection device is improved, so that the arc light protection device is more suitable for a power system.

The invention discloses a glass breaking alarm reminding device, and relates to the field of vehicle anti-theft alarm. The device comprises a resistance wire, a signal acquisition module, a controller, an alarm device and a server, wherein the resistance wire is used for being arranged on a surface of glass and includes two leading-out ends; the signal acquisition module includes a detection circuit and a conversion circuit; the detection circuit is configured to enable one leading-out end of the resistance wire to be grounded and enable the other leading-out end of the resistance wire to be connected with a detection power supply through a pull-up resistor, and the conversion circuit is used for converting a high-level signal or a low-level signal output by the detection circuit and outputting a glass breaking signal when the detection circuit outputs the high-level signal; the controller is connected with the conversion circuit and is used for receiving and sending the glass breakingsignal; the alarm device is connected with the conversion circuit and is used for giving an alarm when receiving the glass breaking signal; and the server is wirelessly connected with the controllerand is used for outputting reminding information when receiving the glass breaking signal. In the invention, a sensor does not need to be arranged on glass, and a possibility of false alarm can be reduced.

The invention discloses a method for old man falling-down detection based on an attractor propagation algorithm. The method comprises a step 1) of collecting sample information of each sensor; a step 2) of processing the sample information and performing normalization, and constructing a sample state weighted sum; a step 3) of inputting the sample state weighted sum into an AP cluster; a step 4) of utilizing clustering results to construct a balanced binary tree, and marking the clustering results; a step 5) of collecting information of each sensor; a step 6) of processing the sensor information and performing normalization, and constructing a state weighted sum; a step 7) of searching the balanced binary tree according to a weighted sum result, and outputting a predicted result. According to the method, through the AP cluster implemented through the attractor propagation algorithm and the balanced binary tree constructed through the state weighted sum, the old man falling-down detection accuracy rate is effectively improved, and thus the problem that an existing falling-down detection method is not high in accuracy rate and large misjudgment occurs is solved.

The invention provides an electronic fence alarm device. The electronic fence alarm device comprises a fence base, an alarm and a control device, wherein the upper end of the fence base is provided with two support rods, pulse transmission lines are transversely connected between the two support rods, a plurality of middle rods are evenly arranged between the two support rods, a fixing rod is arranged at a middle position between the two support rods, the control device is connected signal transmitters, the signal transmitters are connected with the pulse transmission lines, the pulse transmission lines penetrate the support rods, the middle rods and the fixing rod, two rotary line tighteners are mounted on each pulse transmission line and are close to the support rods, and each rotary line tightener is provided with a pressure sensor; the alarm is arranged at the top of the fixing rod and connected with the same through an alarm support column; a plurality of visible laser probes and invisible laser probes are arranged on the surface of the alarm. The electronic fence alarm device is firm in connection, high in safety and capable of effectively lowering false alarm probability.

The invention discloses a PMA-dual ddPCR-based quantitative detection method for vibrio parahaemolyticus, and belongs to the technical field of food safety detection. According to the method, a specific primer and a probe are designed and verified by taking a vibrio parahaemolyticus self-screening specific new target VP0488 and a traditional target TLH as target fragments. Meanwhile, in order to ensure the specificity and sensitivity of the method and optimize dual ddPCR amplification conditions, a reaction system and PMA treatment conditions, a PMA-dual ddPCR method for quantitatively detecting viable vibrio parahaemolyticus is established. Results show that the sensitivity of the method is higher than that of dual real-time fluorescent quantitative PCR (qPCR), and the method has the advantages of being high in specificity and good in accuracy, and has practical application value in the aspect of food safety detection.

The invention relates to a quality online monitoring method based on a dye cloth printing and dyeing process. The method comprises the following steps of connecting an upper cloth machine, a printingand dyeing system, an automatic sampling system and a quality inspection system on a dye cloth printing and dyeing production line; carrying out automatic sample collection on the current batch of dyecloth in the printing and dyeing system by the automatic sampling system, and sending to the quality inspection system to obtain a required quality parameter Xnew, and then, transmitting the qualityparameter Xnew to a dye cloth printing and dyeing quality online monitoring model F; according to F:x to y, outputting a printing and dyeing quality value y; transmitting dye cloth quality ynew to thequality inspection system, and comparing the dye cloth quality ynew with the preset dye cloth quality value Y in the quality inspection system, which is convenient for the subsequent batch of dye cloth printing and dyeing production line to carry out corresponding adjustment; and detecting whether the dye cloth printing and dyeing production line has a new production task, if there is the new production task, re-executing a step S2, and if there is no new production task, finishing processes. Real-time and accurate monitoring can be realized, a monitoring result is accurate, and cost is low.

The invention provides a sock machine with full-course needle breakage detection, wherein during weaving of sock legs, a first detector carries out detection, a second detector detects needle breakage when at the woven kneel part, both the woven legs and the woven heel can detect the needle breakage during production, defective rate is effectively reduced, production quality is improved, and the reliability and safety are high; the sock machine also comprises a first detecting device and a second detecting device, the first detecting device comprises a mounting frame, a slider is slidably connected with the mounting frame, the slider is driven by the driving device to slide and is provided with a detecting element, the detecting element comprises a conductive tube and a conducting rod, the conducting rod can contact the conductive tube when swinging, a needle raiser is connected with the second detecting device, and the second detecting device comprises a sensing protrusion, and a sensor is arranged below the sensing protrusion.

The invention discloses a movement detecting method, comprising the steps as follow: the first step, the picture of a reference frame is determined and the pictures of a current frame is determined; the second step, a monitoring area is divided into a plurality of sub-areas, and the corresponding valve value and the weight are respectively set for each monitoring sub-area according to the sensitivity of each monitoring sub-area; the third step, the movement information of the current frame and the reference frame inside each sub-area are acquired; and the fourth step, the movement detection inside the whole monitoring area is determined according to the movement detecting result of each sub-area, the weight of each sub-area and the valve value of the whole monitoring area. As the invention is added with the weight information, all the sub-areas are combined organically, thereby ensuring the movement detecting result of the whole monitoring area more accurate and reliable.

The invention discloses an arc light protection device which comprises an arc light probe which is used for collecting arc light generated during short circuit discharge of a bus joint and further exciting the arc light to be fluorescence for outputting, or used for detecting visible light generated by ambient light leakage and outputting the visible light; an optical fiber which is connected withthe arc light probe through a connector and is used for transmitting the fluorescence or visible light output by the arc light probe, and a control terminal which is communicated with the optical fiber through the connector, and the fluorescent light and / or the visible light transmitted by the optical fiber is input into the control terminal, When the control terminal identifies that fluorescentlight and / or the visible light is caused by short circuit discharge of the bus joint or by ambient light leakage, a power supply protection bus is cut off or an alarm signal of a protection system fault is sent respectively. The device provided by the invention has all functions of a traditional arc light protection system, and all advantages of a traditional device are maintained. The stability of the arc light protection device is improved, so that the arc light protection device is more suitable for a power system.

The invention discloses a malicious site detection method and device. The malicious site detection method comprises the steps of: acquiring a URL (Uniform Resource Locator) to be accessed; capturing a page pointed by the URL; carrying out static characteristic analysis on the data of the captured page; and if the static characteristic analysis shows that dangerous characteristics exist, carrying out dynamic behavior analysis in a Honeynet cluster. The malicious site detection device comprises an acquiring device used for acquiring the URL to be accessed, a capturing unit used for capturing the page pointed by the URL, a static analyzing unit used for carrying out static characteristic analysis on the data of the captured page, and a dynamic analyzing unit used for carrying out dynamic behavior analysis in the Honeynet cluster if the static analyzing unit shows that the dangerous characteristics exist. By adopting the technical scheme of the invention, complete website security detection can be carried out.