10results about How to "Reliable protection function" patented technology

The invention provides an automatic loading method and system for an aero-engine test run. The method comprises the following steps: establishing a coding table according to an engine running state and a loading demand; configuring the test run program and the code table to obtain a test run program configuration code; the test run program configuration code is transmitted to the PLC through a data acquisition channel; the PLC performs programming according to the received test run program configuration code, and compiles a corresponding control logic instruction; on the basis of a control logic instruction sent by the PLC, a test run automatic loading program of the engine is started, the loading state of the engine is controlled to be switched according to the loading requirement corresponding to the coding table, and the automatic loading process of engine test run is controlled. According to the automatic loading method, manual loading operation can be completely replaced without being influenced by a preset test run program, the loading amount and the loading time are automatically adjusted according to the actual running state of the engine, and loading can be stopped at any time in the loading process.

The invention discloses an LDO (Low Dropout Regulator) circuit with soft start and turn-back current-limiting protection functions. The LDO circuit comprises a band-gap reference module, a soft start module, a voltage selection module, a current-limiting protection module, a first error amplifier, an output power tube, a first divider resistor and a second divider resistor, the LDO is powered on without overshoot, the power consumption borne by the chip is greatly reduced after turn-back current limiting, and the use safety of the chip is guaranteed. By multiplexing the control signal of the soft start circuit, the problem that a traditional turn-back type protection circuit fails to start with a constant current load is solved, and the on-load power-on capability is improved. And meanwhile, the current limiting value during power-on can be simply and flexibly adjusted according to the load requirement by adjusting the VSET voltage, and good protection is provided for the chip while the application requirement is met.

The invention discloses an electric switch circuit breaker tripping system, which relates to the technical field of circuit breakers and comprises an outer shell, an inner shell, an opening and closing device, a binding post and a conductive component. The inner shell is an insulating component, and is internally provided with a switching-on and switching-off device, a binding post and a conductive part. The switching-on and switching-off device adopts an electric driving module, a motor drives a shaft sleeve to rotate, a gear is driven to be meshed with a handle toothed plate, and switching-on and switching-off operation is achieved. The handle is connected with the deflection seat through a connecting rod, and the deflection seat drives the deflection plate and the contact to rotate and contact with the conductive contact piece to complete closing. The electric driving module is provided with an abutting protrusion and an abutting groove, and it is ensured that the handle can automatically rotate during leakage protection. The tops of the outer shell and the inner shell are provided with avoiding holes for deflection of the handle, and two sides are provided with threading holes connected with an external cable. According to the invention, the electric driving structure is simplified, the operation flexibility and compatibility are improved, the reliability and stability of the circuit breaker are enhanced, and the circuit breaker is suitable for various power system application scenes.

The invention belongs to the technical field of vehicles, and discloses a battery pack box body capable of preventing coolant leakage and a vehicle, the battery pack box body comprises a battery box frame body, an integrated liquid cooling plate and a bottom protection plate, the integrated liquid cooling plate is located between the battery box frame body and the bottom protection plate, and the integrated liquid cooling plate is provided with at least one liquid discharge hole. The liquid discharging hole is communicated with an interlayer area between the integrated liquid cooling plate and the bottom protection plate, and a soluble breathable film and a liquid discharging unit used for preventing the soluble breathable film from being dissolved in advance are arranged at the liquid discharging hole. The liquid discharging function can be automatically started when the cooling liquid leaks, external impurities can be effectively prevented from entering, meanwhile, the problems of detection and differential pressure balance of the sealed space at the bottom of the battery pack are solved, and therefore the safety performance of the battery pack is comprehensively improved.

The invention provides an audio and video terminal, and belongs to the field of audio and video terminal equipment. The audio and video terminal comprises a machine body, a first panel, a second panel, an adjusting assembly, a convex screen and a protection assembly, and the adjusting assembly comprises a rotating shaft, a bottom plate, a driven roller, a belt and a driving roller; one side of the machine body is rotatably connected with the first panel, the other side of the machine body is rotatably connected with the second panel, one end of the rotating shaft is fixedly connected with the machine body, the other end of the rotating shaft is rotatably connected with the bottom plate, the arc surface of the rotating shaft is fixedly connected with the driven roller, and the arc surface of the driven roller is in transmission connection with the belt; the driving roller is in transmission connection with a belt; the adjusting assembly is used for driving the machine body to rotate through the driving roller, the driven roller and the rotating shaft to adjust visual angles of the first panel and the second panel; a convex screen is mounted on one side of the first panel, so that the view wide angle of the audio and video terminal is further expanded; the protection assembly can effectively protect the first panel and prevent the first panel from being damaged by the outside.

The invention discloses an SSPC integral protection circuit based on a high-speed operational amplifier. The SSPC integral protection circuit comprises a control circuit, a driving circuit, a power supply circuit, an acquisition circuit and an integral protection circuit, the input end of the control circuit is used for receiving an external control signal, and the output end of the control circuit is connected to the control end of the driving circuit; a power path of the driving circuit is connected in series in a load power supply loop, and a current sampling end of the driving circuit is connected to an input end of the acquisition circuit; the output end of the acquisition circuit is connected to the input end of the integral protection circuit; the protection action output end of the integral protection circuit is in feedback connection with the input end of the control circuit and is used for turning off the driving circuit when a fault occurs; and the power supply circuit provides a working power supply for each circuit module. According to the invention, the problem that the current SSPC power distribution equipment is not timely enough to deal with the load short circuit and the problem that the two states of capacitive load power-on and load short circuit cannot be distinguished are solved.

The utility model provides a stoma nursing device which comprises a main body shell, a cover plate is arranged above the main body shell, and the cover plate is detachably connected with the main body shell to form a protection cavity. A collecting bag is arranged in the protection cavity, a connecting pipe is arranged on the cover plate, and one end of the collecting bag is clamped in the connecting pipe; a stoma tube is arranged above the cover plate, one end of the stoma tube is clamped in the connecting tube and connected with the collecting bag, and the other end of the stoma tube is connected with a stoma; a drain pipe is arranged at the bottom of the collecting bag; one end of the drain pipe penetrates through the main body shell and is provided with a valve A bandage is arranged on one side of the body shell, a fixing assembly is arranged on the other side of the body shell, and one end of the bandage is clamped in the fixing assembly. According to the stoma nursing device, the stoma of a patient is connected with the collecting bag through the stoma tube, and it is guaranteed that excrement can smoothly enter the collecting bag; the main body shell is connected with the cover plate to form the protection cavity, the collection bag is located in the protection cavity, the collection bag can be separated from the outside, the situation that the collection bag is extruded by external force and damaged is avoided, and a reliable protection function is provided.

The utility model relates to a power failure detection circuit which is characterized in that an alternating current signal source AC is respectively connected with a first loop and a second loop, a voltage stabilizing diode Z1 and a triode Q2 are connected in series, one end of the voltage stabilizing diode Z1 is connected with the first loop and the second loop, and one end of the triode Q2 is connected with the first loop and the second loop; when the AC signal source AC is a positive half-cycle signal, the AC current passes through the first loop; when the AC signal source AC is a negative half-cycle signal, the AC current passes through the second loop; when the voltage generated by the alternating current voltage in the common component capacitor C1 of the first loop and the second loop is greater than a preset value, the voltage stabilizing diode Z1 is broken down and conducted to present a voltage stabilizing state; when the protection circuit works, the base electrode of the triode Q2 generates a preset voltage, so that the triode Q2 is conducted, the voltage of the emitting electrode is lowered, a low-level trigger signal is generated, and the protection circuit is triggered to work.

The utility model relates to the technical field of battery discloses a kind of battery and electronic equipment, the battery includes battery main body and protection plate, the battery main body includes positive electrode surface and negative electrode surface, the protection plate is set on the positive electrode surface and is respectively electrically connected with the positive electrode surface and the negative electrode surface, positive electrode end and negative electrode end for being connected with external consumer are provided on the protection plate, the protection plate includes control chip and power switch integrated on the control chip and electrically connected with the control chip, the protection plate further includes the insulating plastic package body that the control chip and the power switch are wrapped simultaneously, one end of the power switch is electrically connected with the positive electrode surface, the other end of the power switch is electrically connected with the positive electrode end;The application mainly solves the technical problem of how to reliably protect small battery (for example button cell or small cylindrical battery).

The utility model discloses a wireless charging device and a charging protective sleeve. The wireless charging device comprises a shell, a wireless charging receiving module and a telescopic assembly, and the shell covers the outer side of electric equipment; the wireless charging receiving module is arranged on the shell; the charging plug is arranged on the shell, and the charging plug is used for being inserted into a charging socket of electric equipment; the telescopic assembly is arranged on the shell, and the charging plug is matched and connected with the telescopic assembly; according to the wireless charging device provided by the utility model, the shell covers the outer side of the electric equipment, and the charging plug is inserted into the charging socket of the electric equipment, so that the wireless charging device can provide protection for the electric equipment and also can use the electric equipment to support a wireless charging function, and the charging plug is driven to move through the telescopic assembly, so that the wireless charging device is convenient to use. And the charging plug can be moved out of the charging socket without taking down the whole shell from the electric equipment, so that the electric equipment can utilize the charging interface to perform data transmission or utilize the charging interface to perform wired charging, and the operation is convenient.