121results about How to "Guaranteed uptime" patented technology

The invention discloses a method and system for detecting pipeline leakage. The method comprises the steps that multiple related parameters of a detected pipeline at a first moment are acquired; the multiple related parameters are input into a neural network model to obtain the predicted in-pipe fluid temperature, the predicted in-pipe fluid pressure and the predicted out-of-pipe environment temperature of the detected pipeline at a second moment after the first moment; the actual in-pipe fluid temperature, the actual in-pipe fluid pressure and the actual out-of-pipe environment temperature ofthe detected pipeline at the second moment are acquired; a prediction error is determined based on the difference value between the predicted in-pipe fluid temperature and the actual predicted in-pipe temperature, the difference value between the predicted in-pipe fluid pressure and the actual in-pipe fluid pressure and the difference value between the predicted out-of-pipe environment temperature and the actual out-of-pipe environment temperature; and the prediction error is compared with an error threshold value, and the final pipeline leakage rate is compared with a pipeline leakage rate threshold value. According to the method and system for detecting pipeline leakage, leakage detection and/or positioning can be conducted on an apron pipeline.

The invention belongs to rail transit shielding door/safety door locking equipment, and relates to an electronic locking device applicable for rail transit semi-high shielding door locking equipment,in particular to a mechanism and method for locking and unlocking an urban rail transit semi-high shielding door. The mechanism is characterized by at least comprising a swing handle (1), a guide wheel component (2), connecting steel wires (3), an unlocking component (4), a lock (5), an electromagnetic locking component (6), a travel switch (7), a locking component (8) and an electromagnet (9); the handle (1) is connected to the unlocking component (4) through the guide wheel component (2) by virtue of the connecting steel wires (3); and the unlocking component (4) is connected to the lock through a lever; the unlocking component (4) is connected to the lock which is provided with the electromagnetic locking component (6). The mechanism and method for locking and unlocking the urban rail transit semi-high shielding door have the advantages of a simple structure, easy maintenance, installation space saving and low manufacturing and maintenance cost.

The present invention discloses a stable wood planning assembly that can press and limit the wood veneer effectively to prevent the sharking during a planning operation. The assembly includes a pair of knife shafts having a base and a plurality of grooves disposed equidistantly from each other that the grooves of the two knife shafts are disposed alternately with each other. And the base includes a set of material pressing shoes installed axially and corresponds to a groove of the knife shaft, and the material pressing shoes has a curved surface corresponding to the groove of the knife shaft groove, at the rear end of the shoes has a spring that is used to stably press the wood veneer, and at both lateral sides of the shoes have a curvature bit guide plate which corresponds to the external diameter of the knife shaft, and a dust-collecting equipment attached.

The invention relates to a magnetic-induction liquid-level monitor based on a CAN bus. The magnetic-induction liquid-level monitor is characterized by comprising a cylindrical shell and an electronic control device, a spring is arranged on the inner wall of the top end of the cylindrical shell, a float is arranged at the bottom end of the spring, a magnet is installed in the float, and the electronic control device comprises an MCU module, a power supply module, a Hall sensor, a CAN module and an acousto-optic alarm module. The MCU module is connected with the Hall sensor and realizes the measurement of the liquid level by the magnet. The MCU module and the acousto-optic alarm module are connected to achieve the sound and light alarm function, the MCU module and the CAN module are connected to the monitoring center through the CAN bus to monitor the data transmission. The magnetic-induction liquid-level monitor detects the magnet in the float through the Hall sensor, realizes the accurate monitoring function of the liquid level, the abnormal condition alarming function, connects to the monitoring center through the CAN bus and transmits the monitoring data, and the supervisor can deal with the abnormal situation quickly and ensure the normal operation of the industrial production.

The invention relates to a semiconductor lighting driving circuit which is compatible with a thyristor dimmer and a voltage input type dimmer. The semiconductor lighting driving circuit comprises a rectification filtering circuit, a power factor correction (PFC) circuit, a control circuit and a conversion circuit, wherein the rectification filtering circuit is used for converting an alternating current which comes from an alternating current power supply into a direct current; the PFC circuit is used for performing voltage reduction on the direct current; the control circuit is used for generating a pulse width modulation (PWM) control signal according to the direct current which is subjected to voltage reduction or an output voltage of the voltage input type dimmer; and the conversion circuit is used for supplying electric energy to a semiconductor lighting device according to the PWM control signal. The semiconductor lighting driving circuit is compatible with the thyristor dimmer and the voltage input type dimmer, can steadily operate in various kinds of dimming modes, and is high in generality. The semiconductor lighting driving circuit can independently operate, and the semiconductor lighting driving circuit and other circuit modules can conveniently form a product with high cost performance. Moreover, with the PFC circuit, the electromagnetic interference of the circuit can be remarkably reduced, so that the circuit operates more steadily and more reliably.

The invention discloses a vehicle and an electric transmission system and a vehicle cooling system thereof. The vehicle cooling system comprises a main radiator, a main water cooling device, a main fan, a plurality of auxiliary radiators and auxiliary water cooling devices, wherein the main radiator and the main water cooling device are used for cooling a first to-be-cooled object; the auxiliary radiators and the auxiliary water cooling devices are used for cooling a second to-be-cooled object; the main radiator and the auxiliary radiators are arranged on the air inlet side or the air outlet side of the main fan. According to the vehicle cooling system, each to-be-cooled object is cooled in a water-cooling heat dissipation mode, and then the main fan is comprehensively utilized to provide cooling air for each heat dissipation device, so the cooling air quantity of the main fan can be effectively utilized, water-air cooling of each to-be-cooled object can be realized, overall arrangement of a whole vehicle cooling system is facilitated, intensive heat dissipation power utilization of the whole vehicle is facilitated, and heat dissipation efficiency of the whole vehicle is improved.