39results about How to "Solve the false alarm problem" patented technology

The scheme of the invention discloses a vehicle assistance driving system based on the infrared thermal imaging and millimeter wave radar technology. The main functions include pedestrian and vehicledetection, image and sound fusion and collision early warning in driving of the vehicle. The early warning system uses the following technical characteristics: the infrared camera and the millimeter wave radar specialized for vehicle-mounted assistance driving, the data acquired by the radar, such as the distance, the direction and the speed and the images acquired by the infrared camera are fusedfor screening and determining the pedestrians or the vehicles, the pedestrian or vehicle characteristics are extracted through the algorithm, finally the result is displayed on the visual interface and multidimensional early warning information including images, numbers and sound is provided.

The invention belongs to the technical field of airborne radar clutter and interference rejection, and particularly relates to an airborne radar anti-forwarding type interference method based on adaptive beamforming. The airborne radar anti-forwarding type interference method based on adaptive beamforming comprises the following steps that a receiving array of an airborne radar receives corresponding echo signals in the corresponding directions; according to the echo signals received by the airborne radar in all directions, corresponding constant false alarm detecting is carried out within the corresponding Doppler channel range in a Doppler clear area, and corresponding constant false alarm detecting results are obtained; the direction of arrival of the forwarding type interference signals are obtained according to the constant false alarm detecting results; the airspace guiding vectors of the forwarding type interference signals are obtained; the adaptive weight is worked out; interference rejection and clutter rejection are carried out on the echo signals received by the airborne radar in all directions according to the adaptive weight.

The invention belongs to the technical field of aircraft radar clutter and interference rejection, and particularly relates to an aircraft radar ground moving target detection method under an intensive forwarding type interference environment. The aircraft radar ground moving target detection method under the intensive forwarding type interference environment comprises the following steps that a receiving array of an aircraft radar receives corresponding return signals in the corresponding direction, corresponding constant false-alarm detection is conducted in a Doppler channel range corresponding to a Doppler distinct area according to the return signals received in each direction of the aircraft radar, and corresponding constant false-alarm detection results are obtained; according to the constant false-alarm detection results, wave arriving directions of forwarded interference signals are obtained; then airspace guide vectors of the forwarded interference signals are obtained; according to the airspace guide vectors of the forwarded interference signals, the maximum likelihood estimation value of the ground moving target signal amplitude is obtained; a ground moving target is detected according to the maximum likelihood estimation value of the ground moving target signal amplitude.

The invention discloses a method and system for judging server fan damage and belongs to the technical field of server heat dissipation. The method for judging server fan damage comprises the steps that synchronous real-time monitoring is conducted on the duty ratio and rotation speed of a fan based on a BMC chip function, monitored information is sent to a fan damage judging module in a BMC, and two fan damage judging algorithms are integrated in the fan damage judging module and are respectively used for judging whether the rotation speed of the fan is zero or not, a fan rotation speed free signal corresponding to zero fan rotation speed is transmitted back to the BMC, it is indicated that the fan is completed damaged, an alarm is started, and a fan adjustment and control mechanism during fan damage is called; when the fan rotation speed is not zero, the fan is normal or slightly damaged, and the rotation speed is reduced. The method for judging server fan damage conducts synchronous real-time monitoring on the duty ratio and rotation speed of the fan, fan faults are confirmed according to the monitored information, and the method has a very good popularization and application value.

The embodiments of the invention provide a train axle box temperature monitoring method and device. The method includes the following steps that: a waveform jump index is calculated according to a target waveform curve, wherein the target waveform curve is the temperature waveform curve of a target axle box within a preset duration, and the waveform jump index is used to indicate the waveform jumpdegree of the target waveform curve; and a monitoring result is sent to a train control system according to the target waveform curve and the waveform jump index. According to the train axle box temperature monitoring method and device provided by the embodiments of the invention, a software algorithm is optimized, so that the software algorithm further has a function of identifying and judging an abnormal temperature curve. With the train axle box temperature monitoring method and device adopted, the problem of false alarms caused by the abnormal jump of axle box, gear box and motor bearingtemperature detection signals during the operation process of a D-series high-speed train can be solved; the probability of false alarms of temperature detection is decreased; and the operating efficiency of the D-series high-speed train can be improved.

The invention discloses a thunder ball linkage warning monitoring system with a preprocessing function and a monitoring method thereof. The monitoring system comprises: a control unit; a plurality ofradar detection units, respectively connected with the control unit; a plurality of video acquisition units, respectively connected with the control unit and linked with the radar detection units in the same areas; a video recognition unit, connected with the video acquisition units and comprising a human recognition module and a vehicle identification module connected with the video acquisition units; a data storage unit, the output ends of the human recognition module and the vehicle identification module being connected with the data storage unit respectively; and a monitoring unit, comprising a display screen and an alarm module, the data input end of the display screen being connected with the data output end of an analysis processor. The monitoring system uses a technology of discovering an active target with a ground search radar and a technology of intelligently recognizing an object with videos, and becomes an overall technical solution system through the organic combination of software and hardware, thereby solving the problem of too high false alarm rate of the ground search radar at the current stage.

The invention discloses a service exception detection method. The method comprises the steps of: obtaining first data, wherein the first data comprises historical business data; obtaining a baseline containing the future trend of the service data according to the first data; and predicting whether the current service point is an abnormal point at least according to the baseline. By adopting the method, the problem of false alarm of service detection is solved.

The invention provides a condensation-proof smoke detector base. The condensation-proof smoke detector base comprises a housing and a cover plate, wherein a smoke sensing probe module is embedded in the condensation-proof smoke detector base, a centering surface parallel to the cover plate is arranged in the housing, a base of the smoke sensing probe module is attached to the centering surface, and a heating piece is arranged between the base and the centering surface. Therefore, the smoke sensing probe module connected with the base can be heated by the heating piece, so that water drops formed through saturation of water vapor in air entering a smoke detector are heated, and false alarm caused by condensation is avoided.

The invention discloses an antitheft and alarm system of a cable. A power supply end alarm module and an electric end alarm module have access to the portions, close to power supply equipment and electric equipment, of a power supply line of the system respectively in a series mode. The power supply end alarm module and the electric end alarm module comprise cable detecting boards. The position of a broken cable (short circuit or open circuit) can be detected through the cable detecting boards. High-voltage impulse waves are sent to the cable through an original point, when the impulse waves encounter a breakpoint or short circuit point, echoes can be generated and are reflected to the original point at the speed approximate to light speed, the original point measures the echoes at high speed and then calculates the time difference between emitting and the echoes, and therefore the length of the broken cable is obtained. Patrol personnel can reach the site in time through a vehicle, or start an alarm near the position of the broken cable after obtaining alarm information, the cable stealing behavior is stopped, the scheme is specifically designed to solve the problem of high-frequency loss of a low-voltage main cable, and high practicality is achieved.

The invention discloses an automatic leakage alarm technology for a liquid cargo tank of a ship, and relates to the field of intelligent monitoring of ship safety. The automatic leakage alarm technology comprises the following steps: acquiring transient liquid level height of the liquid cargo tank by a cargo tank liquid level acquiring and transmitting unit, acquiring transverse and longitudinal dip angles of the ship by a ship shaking dip angle acquisition unit, correcting the liquid level height, and removing wind wave interference to obtain true liquid level height of the cargo tank; combining tank volume factor curve analysis and converting the true liquid level height of the cargo tank into real-time liquid cargo volume A of the cargo tank; defining an initial volume value B of liquidcargo of the cargo tank as 0 if a novel ship is not loaded, starting a liquid cargo loading and unloading pump each time loading and unloading after the ship operates normally, triggering a flow meter to acquire a flow signal of conveyed liquid cargo, and automatically correcting the initial volume B of the liquid cargo of the cargo tank; and continuously comparing and computing the real-time liquid cargo volume A of the cargo tank with the initial volume B of the liquid cargo of the cargo tank, and diagnosing whether the cargo tank has leakage or not by a comparing and leakage diagnosing unit. The automatic leakage alarm technology is quick and accurate in alarm, is slightly affected by a complex sea condition, and is suitable for various ship cargo tank structures.

This invention discloses one linear temperature sense elements, which comprise two pieces of parallel detection conductors and melt insulation layer and NTC property materials and high flexible point insulation materials combination layer. This invention uses NTC property materials high flexible insulation materials insulation distribution to form combination layer and melt insulation layer set between two pieces of conductors, wherein, due to high insulation materials melt with its temperature higher than NTC materials melt one.

According to the method for solving the false alarm problem of the float-type oil level sensor, liquid level alarm signals are collected, processed and judged through computer software, so that software shake elimination is achieved, the false alarm problem is solved to a great extent, and the use requirement of an airplane in the maneuvering flight process is met.

This invention discloses one in-restorable linear temperature detector and its shortcut alarm method, which comprises linear temperature detect element and its switch case and terminal resistance on both ends of the detection parts, wherein, the linear temperature sensor element is composed of two pieces of detection conductors and NTC isolation layer in between with at least one conductor is easy to be fused wires. This invention provides the method can send different alarm signals according to the shortcut fault or break fire.

This invention discloses one in-restorable linear temperature detector and its shortcut alarm method, which comprises linear temperature detect element and its switch case and terminal resistance on both ends of the detection parts, wherein, the linear temperature sensor element is composed of two pieces of detection conductors and NTC isolation layer in between with at least one conductor is easy to be fused wires. This invention provides the method can send different alarm signals according to the shortcut fault or break fire.

The invention discloses an intelligent monitoring data acquisition and analysis method based on an Internet of Things technology, which comprises the following steps of: acquiring two types of information, namely equipment alarm information and influence factor information, comparing the equipment alarm information with the influence factor information after performing exception processing on the equipment alarm information, and adjusting an alarm threshold valuethrough the influence factor information, and eliminating false alarm information . By means of the method, the intelligent monitoring data collecting and analyzing method based on the Internet of Things technology is wide in applicability, high in processing speed and good in accuracy.

The invention discloses a method and circuit for detecting alternating-current fuse failure of an uninterruptible power supply. The method comprises the steps of: detecting voltages at two ends of an alternating-current fuse by using a voltage detection module, when a larger voltage difference exists at two ends of the alternating-current fuse, controlling a switch module to output a low-voltage alternating-current signal, when the voltage difference at two ends of the alternating-current fuse is close to zero, controlling the switch module to output a high-voltage direct-current signal, outputting a signal by the switch module and rectifying, and then controlling the action of a switch tube by a serially-connected voltage-stabilizing tube, and outputting an alternating-current fuse state signal by the switch tube. The corresponding circuit is characterized in that two optical couplers are reversely connected to two ends of the alternating-current fuse in parallel, and secondary sides of the optical couplers are connected in parallel and connected between a positive power supply and ground to be used as the switch module. The invention avoids the problem of false alarm common in the traditional failure detection method. Meanwhile, the invention can be used for detecting the failure of the alternating-current fuse before an inverter carries a load, and avoids that the inverter carries the load under the failure condition.

The invention relates to a fault early warning method for a double-fed fan main shaft. The method comprises the following steps: selecting main shaft temperature and temperature related data of main shaft related parts from fan equipment; selecting features with high correlation with the spindle temperature from the original data set by adopting a Pearson correlation coefficient; optimizing parameters in the LightGBM prediction model by using a whale algorithm to obtain an optimized LightGBM normal main shaft temperature prediction model; inputting the test set data into the optimized LightGBM normal main shaft temperature prediction model to obtain a corresponding main shaft temperature prediction value, and performing residual analysis to obtain a main shaft temperature early warning threshold; and selecting characteristic data with relatively high correlation with the spindle temperature from the fan data to be early warned, inputting the characteristic data into the optimized LightGBM normal spindle temperature prediction model to obtain a current fan spindle temperature prediction value to be early warned, and performing residual analysis to judge a spindle temperature state so as to achieve early warning of a fan spindle fault.

The invention discloses a power supply monitoring method. The method comprises the following steps: detecting whether a communication link between a power supply and a monitoring device for monitoringthe working condition of the power supply is interrupted or not; if not, determining that the power supply fault alarm of the monitoring device is valid; and if so, determining that the power supplyfault alarm of the monitoring device is invalid, and resetting the power supply, the communication port of the monitoring device and the communication bus between the power supply and the monitoring device so as to repair the communication link between the power supply and the monitoring device. Visibly, when the communication between the monitoring device and the power supply is interrupted, thefalse alarm of the monitoring device is determined, and the communication link between the monitoring device and the power supply is repaired, so that the false alarm problem caused by the interruption of the communication between the monitoring device and the power supply is avoided. The invention further discloses a power supply monitoring system and a server. The power supply monitoring systemand the server have the same beneficial effects as the power supply monitoring method.

The invention discloses an engine oil pressure-sensitive switch, and belongs to the field of engine oil pressure detection. The switch comprises an oil flowing channel communicated with an engine main oil way, an inner cavity not communicated with the oil flowing channel, a static contact located in the inner cavity, a movable contact, a breathing channel communicated with the inner cavity with the exterior and a breathable film covering the breathing channel, wherein connection or separation of the static contact and the movable contact can be controlled through the oil pressure in the oil flowing channel. The breathing channel is covered through the breathable film, exterior liquid like muddy water cannot enter the inner cavity directly through the breathing channel, the false alarm problem appearing due to the water droplet conduction between the movable contact and the static contact can be solved, and the problem that due to the fact that the liquid enters the inner cavity, an assembly is rusty, and the power failure appears is solved.

An operating method of a base station for error handling in fixed resource allocation of the present invention comprises the steps of: a terminal transmitting a first control message including fixed resource allocation information for transmitting an uplink data burst thereto; decoding the uplink data burst in a resource area allocated through the first control message; and determining whether the terminal receives the first control message on the basis of the decoding result.

The invention relates to the technical field of collaborative robots, in particular to a collaborative robot control method and a collaborative robot, and the collaborative robot control method comprises the following steps: S1, setting a first object on a far end point of a mechanical arm, and constructing a tool coordinate system corresponding to the first object; s2, load information corresponding to the working track is generated under the tool coordinate system; and S3, generating a load compensation program according to the load information to obtain collision information of the collaborative robot. The method has the beneficial effects that by constructing the tool coordinate system and combining the working track of the collaborative robot during machining, the judgment on the force reading possibly caused by contact between the first object and the second object during machining of the collaborative robot is effectively realized, so that the load information is obtained, and the working efficiency is improved. Therefore, the corresponding load compensation program can be obtained according to the load information, so that the problem of false alarm caused by contact between the first object and the second object in the machining process is avoided, the collaborative robot can still start the collaborative mode during machining, and the safety of the robot is improved.

The invention discloses a fire fighting access occupation detection method and system based on depth information. The method comprises the following steps: acquiring a real-time depth image and a real-time color image of a fire fighting access; obtaining a potential target based on the collected real-time depth image, and cutting out the potential target from the real-time color image; and carrying out multi-label classification on the intercepted potential targets, and determining whether to carry out early warning or not and the early warning level according to a classification result. According to the fire fighting access occupation detection method provided by the invention, the potential targets are obtained by fusing the depth information, the problem of false alarm caused by two-dimensional perspective transformation is effectively avoided, the potential targets are classified based on multi-label classification, early warning is performed according to the classification result, the probability of false alarm and missing alarm can be greatly reduced, and the accuracy is improved.

According to the dehumidifier and the control method thereof, after a microswitch is closed, a compressor and an air supply device are not controlled to stop immediately, the rotating speed of the compressor is kept unchanged, the rotating speed of the air supply device is reduced, supplied air is reduced, the continuous operation time of the compressor is further detected at the moment, and the closing time of the microswitch is detected again; when the continuous operation time of the compressor is larger than the operation time threshold value, it is indicated that the operation time of the dehumidifier reaches the limit value, it can be determined that the detected water fullness signal is accurate, and at the moment, the compressor and the air blower are controlled to stop; when the closing time of the microswitch is larger than a set value, it is indicated that the closing time of the microswitch is long enough, the compressor and the air blower are controlled to stop, and if the microswitch is closed due to water level fluctuation, the re-detected closing time is very short or zero, and therefore it can be determined that the water fullness signal is accurate. By adopting the embodiment of the invention, the problem of false alarm caused by water level fluctuation of the water tank can be avoided.

The invention belongs to the technical field of aircraft radar clutter and interference rejection, and particularly relates to an aircraft radar ground moving target detection method under an intensive forwarding type interference environment. The aircraft radar ground moving target detection method under the intensive forwarding type interference environment comprises the following steps that a receiving array of an aircraft radar receives corresponding return signals in the corresponding direction, corresponding constant false-alarm detection is conducted in a Doppler channel range corresponding to a Doppler distinct area according to the return signals received in each direction of the aircraft radar, and corresponding constant false-alarm detection results are obtained; according to the constant false-alarm detection results, wave arriving directions of forwarded interference signals are obtained; then airspace guide vectors of the forwarded interference signals are obtained; according to the airspace guide vectors of the forwarded interference signals, the maximum likelihood estimation value of the ground moving target signal amplitude is obtained; a ground moving target is detected according to the maximum likelihood estimation value of the ground moving target signal amplitude.

An embodiment of the present invention provides an early warning device, including a transmitting mechanism, a two-dimensional grating, a receiving mechanism and an early warning mechanism. The transmitting mechanism is used to emit the first plane incident light and the second plane incident light; The two-dimensional grating is used to convert the first plane incident light and the second plane incident light into the first diffracted light and the second diffracted light respectively; the receiving mechanism and the transmitting mechanism are respectively arranged on the same side of the two-dimensional grating, and the receiving mechanism is used to receive the first diffracted light The first diffracted light and the second diffracted light, and obtain the interference image formed by the first diffracted light and the second diffracted light; the early warning mechanism is connected with the signal of the receiving mechanism to determine the stress value according to the interference image, and judge whether to issue an early warning according to the stress value Signal. The early warning device provided by the invention obtains the stress value based on the principle of grating interference, effectively solves the problem of false alarms and is not disturbed by the noise environment. The embodiment of the present invention also provides a glass fixing device, a glass early warning system and a glass early warning method.

Embodiments of the present invention provide an alarm reporting control method, an apparatus and a base station. The method comprises: based on an interface establishment characteristic and interface link establishment status of an X2 interface, setting interface control status of the X2 interface; if the interface control status of the X2 interface is debug status, reporting no alarm to a network management device; and alternatively, if the interface control status of the X2 interface is common status, and the X2 interface is faulty, reporting an alarm to the network management device. A technical scheme of the present invention can implement that the base station automatically controls alarm reporting of the X2 interface based on the interface control status of the X2 interface, thus solving a false alarm problem of the X2 interface and preventing a false alarm of the X2 interface from interfering with normal network operation and maintenance, and compared with prior art that avoids the false alarm of the X2 interface through planning and configuring an adjacent cell blacklist, can improve network operation and maintenance efficiency and prevent an impact on network performance.

The invention discloses a dual-frequency synchronous dynamic monitoring short message alarm for broadcast transmitters. The alarm comprises a signal receiving module, a logic processing module, a central processing module, a short message alarm module and a power source module; the logic processing module comprises an audio amplification and delay device, a clock timer and four comparators. With the alarm of the invention adopted, the synchronous monitoring of the working states of a plurality of broadcast transmitters, the initial classification of the operating states and accidents of the transmitters, short message accurate alarm, simple and convenient maintenance can be realized; remote monitoring by engineering technicians can be realized; the dynamic conditions of a machine room canbe mastered at any time; accident handling efficiency can be improved; the safe and high quality broadcasting of broadcast programs can be ensured; and effective technical supervision on the working states of the broadcast transmitters of unattended broadcast transmitting stations can be implemented in particular.