10 results about "Alarm sensor" patented technology

The invention relates to the technical field of aquaculture constant-temperature equipment, and discloses an aquaculture circulating water constant-temperature control system and method based on microwave energy, and the system comprises a base plate, and the center of the top surface of the base plate is fixedly provided with a culture barrel, a microwave generation module, a circulating water treatment unit, a temperature detection network, an intelligent control center and a safety protection system. The microwave generation module comprises a heat preservation box, a heat exchange tube, a resonance tube, a magnetron and a waveguide, the circulating water treatment unit comprises a rotary drum type filtering device, a water tank and a flow sensor, and the temperature detection network comprises a water quality monitoring probe, a multi-point distributed optical fiber temperature sensor, an intelligent control center touch control type man-machine interaction interface and a PLC. The safety protection system comprises a high-temperature alarm sensor, a resonant cavity pressure safety valve and a microwave leakage monitoring probe, a double-closed-loop control strategy is adopted, an inner ring is used for controlling microwave power, an outer ring is used for adjusting circulating flow, and the device can dynamically optimize a temperature curve according to breeding varieties and growth stages.

The utility model relates to steel wire rope technical field, and disclose a kind of cable force detection device of sealed steel wire rope, including steel wire rope body, the left and right sides of steel wire rope body are all fixedly connected with connecting section, the surface of steel wire rope body is provided with detection component, the detection component includes hug tightly hoop, stress sensor, armoured cable, wireless gateway, sensor protection shell, cloud platform and cell -phone APP, two the hug tightly hoop is fixedly installed on the surface of steel wire rope body, by setting detection component, hug tightly hoop can firmly fixed stress sensor on the two sides of steel wire rope body, improve the precision of detection, simultaneously, wireless gateway can be detected data is transported to cell -phone APP by cloud platform, if cable force mutation or unbalance is found, can immediately alarm, sensor protection shell can also carry out protective work to stress sensor, realize the work of dustproof, waterproof and anti-impact, guarantee the stability of steel wire rope body cable force detection.

The invention provides a coal mine safety monitoring alarm studying and judging method and system based on data fusion. The method comprises the following steps: establishing an identification framework for representing alarm causes; determining a first support probability of various alarm causes in the recognition framework according to data of an alarm sensor; determining a second support probability of various alarm causes in the recognition framework according to the same type of sensor data located at the upstream and downstream of the alarm sensor; determining a third support probability of various alarm causes in the recognition framework according to different types of sensor data located in the same area as the alarm sensor; and fusing the first support probability, the second support probability and the third support probability of each type of alarm cause based on an evidence theory to obtain an occurrence probability representing each type of alarm cause, and studying and judging the cause of the alarm event according to the occurrence probability. According to the technical scheme provided by the invention, the accuracy and reliability of alarm reason identification are remarkably improved while the research and judgment efficiency is improved.

In some embodiments, a window fan has a housing mountable in a window, the housing comprising one or more fans therein and including interior and exterior sides and a top side, the top side configured to be in touch with a window panel when the window is in a closed state. An alarm sensor is disposed on the top side of the housing and configured to detect whether the window is open. A control circuitry is provided and configured to: responsive to the alarm sensor detecting that the window is in the open state, activate an alarm output device. The control circuitry may cancel an alarm upon receiving a user command from a control panel or detecting that the alarm sensor is disengaged by a sensor stopper.

The utility model relates to the related technical field of electric appliance fire hazard sensing and alarming sensors, in particular to an electric appliance fire hazard sensing and alarming sensor, which comprises a sensor protection shell, a display screen, a mounting shell and a mounting assembly, and is characterized in that heat generated by the mounting shell and the sensor protection shell is dissipated through a flat sheet membrane; ventilation is carried out through heat dissipation holes in a mounting plate, so that the electric appliance fire sensing alarm sensor adopts a lithium battery structure, dust can enter the heat dissipation holes and the interior of a flat sheet membrane during heat dissipation, filtering is carried out, and a flexible connection cover is slidably mounted on an operation panel, a sensor protection shell and a display screen through a folding cover; the flexible connection cover and the folding cover are folded and unfolded on the operation panel and the sensor protection shell for dust prevention and fire prevention, dust is prevented from entering the installation positions of the installation shell and the sensor protection shell, heat dissipation holes and a flat sheet membrane are prone to being exposed in a high-dust, lampblack or humid environment for a long time, and the flat sheet membrane can filter the dust and block and isolate the dust.

The application relates to the technical field of alarm devices, and particularly relates to an alarm device with an obstacle detection function, which comprises a mounting seat, an obstacle sensor, a cover shell and an alarm sensor. The obstacle sensor is mounted on the mounting seat. An airflow channel is formed between the cover shell and the mounting seat, and the airflow channel is in the detection area of the obstacle sensor. The alarm sensor is mounted on the cover shell and is arranged in the detection area of the obstacle sensor. The airflow channel provides a channel for the matter triggering the alarm sensor to reach the alarm sensor. In this way, the obstacle sensor and the alarm sensor are respectively mounted on the mounting seat and the cover shell, the alarm sensor and the airflow channel are arranged in the detection area of the obstacle sensor, the blind area of the obstacle sensor for detecting the environment obstacles of the alarm sensor is eliminated, the obstacle sensor can comprehensively monitor the environment obstacles of the alarm sensor, and the reliability of the alarm device is improved.

The utility model discloses a glass detection and alarm integrated device based on multi-sensor feedback. The glass detection and alarm integrated device comprises a concave frame, a limiting plate and detection sensors, conveying wheels are arranged in the concave frame at equal intervals, and a motor is arranged at the position, located on one side of the conveying wheels, of the side edge of the concave frame; according to the utility model, the glass is in contact with the detection plate, if a bulge is uneven, the detection plate moves upwards, the detection plate drives the vertical rod connected to the top of the detection plate and the contact plate to move upwards, and when the contact plate moves upwards to be in contact with the alarm sensor, the alarm sensor is triggered, and the alarm sensor transmits an alarm signal out; the limiting plates are located at the tops of the conveying wheels and the inner sides of the concave frames, so that when glass is conveyed, the position of the glass can be strictly limited, and deviation is prevented; the detection sensor detects that the glass is abnormal or the surface of the glass protrudes and is uneven, so that the detection plate moves upwards, and a worker is reminded of abnormal glass detection in time in a sound and vision dual mode.

Apparatus and methods for determining if fluid contained within a housing is leaking. A level sensor is provided for determining a measured level of fluid within the housing. A reference sensor is provided for determining a reference parameter that can be used to provide a predicted level of fluid within the housing. The measured level of fluid is compared with the predicted level of fluid to determine if it is likely fluid is leaking from the housing.

The utility model discloses an online cleaning system for a numerical control gantry boring and milling machine. The online cleaning system comprises a machining platform, a spindle box, an X / Y guide rail, a rotary electromagnetic scrap suction roller, a multispectral detection module and a closed-loop recovery system. The rotary electromagnetic scrap suction roller is installed on the side face of the spindle box through an installation frame at the dip angle of 15 degrees, a composite structure of a neodymium iron boron N52 permanent magnet and a 2.5 mm < 2 > excitation coil is adopted, the power ratio is 1: 1.2-1.5, and a centrifugal scrap throwing disc with a flow guide groove is arranged at the end of the rotary electromagnetic scrap suction roller. The multispectral detection module comprises a 3-5 [mu] m infrared sensor and a three-way polarization camera, and debris thickness detection is realized through a deep learning algorithm. The chip collecting groove is connected with the chip collecting box through a negative pressure pipeline, and a compression device with the compression ratio larger than or equal to 3: 1 and a full material alarm sensor are arranged in the box. Automatic adsorption, detection and recovery of chippings in the machining process are achieved, the cleaning efficiency reaches 98% or above, and the problems that a traditional cleaning mode is low in efficiency, machining is interfered and the like are solved.

The application discloses an abnormal alarm processing method and system for GIS ultrahigh frequency partial discharge online monitoring devices, comprising: when the GIS ultrahigh frequency partial discharge online monitoring device occurs partial discharge abnormal alarm, according to the first preset monitoring strategy, comprehensive monitoring is carried out, and the first monitoring data is acquired; when it is determined according to the first monitoring data that there is internal partial discharge but the first preset criterion is not met, according to the second preset monitoring strategy, comprehensive monitoring is carried out, and the second monitoring data is acquired; when it is determined according to the second monitoring data that the first preset criterion and the second preset criterion are not met at the same time, according to the third preset monitoring strategy, comprehensive monitoring is carried out, and the third monitoring data is acquired; when it is determined according to the third monitoring data that the third preset criterion is not met, according to the preset period, the alarm sensor online monitoring data is comprehensively analyzed, and the comprehensive analysis result is acquired; when the comprehensive analysis result does not meet the fourth preset criterion, the step of acquiring the comprehensive analysis result is executed, and recalculation is carried out.