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 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 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.

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 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 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.

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.