18results about How to "Avoid working abnormally" patented technology

The invention belongs to the field of circuit application, particularly relates to a secondary voltage feedback system for packaging impedance voltage drop of a ceramic packaging FPGA (Field Programmable Gate Array), and aims to solve the problem that the voltage drop generated by packaging of a ceramic packaging chip cannot be compensated in the conventional method. The method comprises the steps that a sampling point of a feedback loop of a switching power supply is connected to a power supply pin on the back surface of an FPGA chip; the first end of the DAC is connected to the FPGA chip and is used for communicating with the FPGA chip; and the second end of the DAC is connected to an FB pin of a feedback loop of the switching power supply, and is used for outputting current or sucking current, so that the output voltage of the switching power supply is adjusted, and the voltage drop generated by the ceramic packaging FPGA due to packaging impedance is compensated. According to the invention, the voltage compensation of the voltage drop generated by the packaging impedance of the ceramic packaging FPGA is realized, and the stability of the internal voltage of the FPGA is ensured.

This invention discloses a switching converter and its control circuit and method. The mode switching circuit in the control circuit includes: a first detection module for comparing a loop error signal with a set first reference signal to generate a first enable signal; a second detection module for detecting the system duty cycle and, when the system duty cycle is greater than a set duty cycle, comparing the peak inductor current in the switching converter with a preset peak current to generate a second enable signal; and a switching control module for controlling the switching converter to switch from the normal operating mode to the light-load operating mode when either the first enable signal or the second enable signal is valid. By employing a combination of two detection modes, the light and heavy load conditions of the switching converter can be more accurately determined, thereby avoiding abnormal operation of the switching converter due to misjudgment, ensuring that the system can still enter the light-load operating mode under a large duty cycle, and improving the stability and reliability of the switching converter.

The utility model discloses an automatic cap screwing machine for laundry detergent processing, which comprises a base, a plurality of baffles, a conveyor belt, a cap arranging machine, a cap screwing motor, a turntable, a control box and a plurality of control buttons, the front side of the top of the base is fixedly connected with a protection box, the control box is arranged in the protection box, and the bottom of the protection box is provided with a jacking mechanism; the jacking mechanism comprises a fixing plate, a threaded column and a fixing block, the surface of the fixing plate makes contact with the surface of the protection box, the threaded column is arranged at the bottom of the fixing plate, and the rear side of the fixing block is fixedly connected with the front side of the base. The problems that most existing automatic cap screwing machine control boxes for cap screwing of bottled laundry detergent containers are not provided with protection structures, when the control boxes do not need to be operated, the control boxes are inconvenient to protect, mistaken collision and misoperation are likely to be caused to the control boxes, and consequently the automatic cap screwing machines work abnormally are solved.

The invention discloses a physical sorting control method for equipment, which comprises the following steps of: when the equipment detects that the equipment is in an A state, confirming that the equipment is main, setting the address of the equipment to be 1, and sending a control signal to a lower port, so that the detection of the next connected equipment is changed from a B state to a C state; when the equipment detects that the equipment is in a B state and does not carry out address configuration, the equipment enters a waiting mode, when the equipment finds that an upper port is changed from the B state to a C state, a command for requesting address configuration is sent to a master, when the master receives the request command, address distribution is carried out, and after the equipment receives the address, a control signal is sent to a lower port; the detection of the next connection device is changed from the B state to the C state, and the above steps are repeated for configuration; after the last equipment is configured, a control signal is sent to the lower port, no response reply is made in 2S, that is, it is confirmed that the equipment is the last equipment, the situation of address repetition of the equipment is effectively avoided, and therefore abnormal work caused by the same equipment address is further prevented.

The invention belongs to the technical field of liquid detection, and discloses a liquid detection circuit, a detection meter and a detection method.The detection circuit comprises a detection electrode P1, an oscillation unit and a control unit; the oscillation unit comprises an analog switch U1, and the analog switch U1 is connected with the detection electrode P1 and can be switched into a first oscillation mode or a second oscillation mode; the control unit comprises a main control chip U1, and the main control chip U1 is connected with the oscillation unit and used for generating a control signal to switch the oscillation mode of the oscillation unit and calculating the conductivity of the liquid to be measured according to the first oscillation frequency and the second oscillation frequency obtained through measurement. Through a reference-measurement dual-mode frequency measurement and difference calculation method, the influence of factors such as distributed capacitance and electrode contact difference on a measurement result is fundamentally eliminated, meanwhile, measurement failure caused by signal saturation in a high-concentration solution is avoided, and the measurement consistency can be kept in a wide concentration range of 0-164000 PPM.

The invention discloses a double-chip packaging structure based on a double-sided chip-on-film, and belongs to the field of semiconductor packaging, the double-chip packaging structure based on the double-sided chip-on-film comprises a chip-on-film (Tape), double chips, a copper through hole, a circuit layer, a solder mask layer and a glue sealing area, the chip-on-film is of a multi-layer composite structure and comprises a base material, a conductive layer, an insulating layer and an interlayer adhesive, the base material is a thermoplastic PI material; a through hole is formed in the base material, and the manufacturing process of the through hole comprises the steps of forming the through hole through laser processing, coarsening the wall surface of the through hole through plasma etching, forming a copper wall on the wall surface of the through hole through a chemical plating process, and filling copper through a plating process to form the copper through hole; the double chips are inversely packaged on the chip on film through a wafer bump; through the double-sided circuit design, the circuit layout space is doubled, the problem of dense circuits of multi-IC packaging is solved, the manufacturing difficulty and the short circuit risk are reduced, and meanwhile the production cost is reduced.

The invention discloses a water pump PWM software control method for an instant heating type water dispenser and a corresponding medium and equipment, and the method comprises the steps: S1, receiving a water outlet instruction, and judging whether a water pump PWM historical value corresponding to the current target temperature exists or not; s2, if not, a water pump and a heater are started, the PWM value of the water pump is dynamically adjusted through a PID algorithm according to the difference value between the outlet water temperature and the target temperature till the water temperature stably reaches the standard, and the PWM value is stored as a historical value; s3, if yes, the historical PWM value is directly called to control a water pump and start a heater; and S4, continuously monitoring the water temperature in the quick starting process, and if the water temperature deviates from the target temperature, correcting the historical PWM value to keep the constant temperature. According to the invention, rapid starting is realized by storing and calling the historical PWM value, and time consumed by real-time calculation is reduced; closed-loop control is formed by combining monitoring and correction, long-term stability of the water temperature is guaranteed, and the system adapts to environment and equipment state changes.

The liquid crystal phase shifter, liquid crystal phased array antenna, and driving method provided in this invention include: a plurality of liquid crystal phase shifter units, each configured to connect a data signal line to a first node in response to a first scan signal on a first scan signal line; and a first driving circuit electrically connected to the first scan signal line, configured to output a first scan signal in response to signals from a reference signal terminal and an output enable signal terminal, and to control the first scan signal to slowly switch from a first level to a second level. This allows for large-scale driving of multiple liquid crystal phase shifter units, significantly improving driving capability and reducing the difficulty of the bonding process, thereby improving the reliability and stability of bonding. Furthermore, it enhances the stability of the liquid crystal phase shifter units, preventing abnormal operation due to leakage current, thus improving the performance of the liquid crystal phase shifter.

The invention relates to the technical field of traffic control boxes, in particular to a traffic control modular intelligent case and a control method and system thereof. The method comprises the following steps: monitoring various state parameters and environmental parameters of the case in real time, wherein the state parameters comprise a physical safety state and an electrical state; when it is monitored that the state parameters are abnormal, alarm information is generated; sending the alarm information to a monitoring platform through a selected communication mode; according to the monitored temperature and / or humidity state, an environment adjusting device is controlled to adjust the temperature and / or humidity in the case; and when the commercial power is cut off, the standby power supply is automatically switched. The system comprises a case body, a plurality of functional units freely matched on a standard guide rail, a lightning protection device and a temperature adjusting device. According to the invention, comprehensive intelligent monitoring and active operation and maintenance of the case state are realized, and the reliability, the safety and the maintainability of the traffic control system are obviously improved.

The utility model provides a key structure and electric equipment, the key structure comprises a key cap, a shell, a touch control switch and a waterproof piece, the shell is internally provided with a mounting cavity, the key cap, the waterproof piece and the touch control switch are arranged in the mounting cavity along a first direction, and the waterproof piece abuts against the key cap; the shell is further provided with an installation hole extending in the first direction, the installation hole is communicated with the installation cavity, at least part of the key cap is embedded in the installation hole, the key cap can move relative to the installation hole in the first direction so that the key cap can drive part of the waterproof part to abut against or be separated from the touch switch, and at least part of the side, facing the key cap, of the waterproof part abuts against the shell. And the waterproof piece covers the mounting hole.

The utility model provides a water inlet and outlet control device for non-negative pressure water supply equipment, which belongs to the technical field of industrial automation and comprises a control platform, a cleaning mechanism and a water inlet pipeline, the cleaning mechanism is arranged in an inner cavity of the water inlet pipeline and comprises a hydraulic cylinder, a connecting plate, a sliding groove, a sliding block, a rotator and a cleaning disc, the hydraulic cylinder is fixedly installed at the top of an inner cavity of the water inlet pipeline, the connecting plate is fixedly installed at the bottom of the hydraulic cylinder, the sliding groove is formed in an inner cavity of the connecting plate, the sliding block is movably connected to the inner side of the sliding groove, and the rotator is fixedly installed on the inner surface of the sliding block. By arranging the cleaning mechanism, dirt deposited on the surface of the filter screen can be cleaned in the using process of the device, the filtering effect is ensured, the service life of the filter screen can be prolonged by regularly cleaning the dirt on the surface of the filter screen, the replacement cost is reduced, dirt blockage is prevented, and the water supply quality is ensured; and the filter screen is kept clean, so that the normal operation of the whole water supply equipment is maintained.

The utility model relates to a kind of multi-fuel automatic switching device and engine, comprising: carburetor, pressure reducing valve and control module, the control module includes negative pressure switch solenoid valve, pressure sensor, controller and oil circuit switch solenoid valve, the negative pressure switch solenoid valve with the pressure sensor is set on the pressure reducing valve, the negative pressure switch solenoid valve is connected and controls the on-off of the air inlet, the oil circuit switch solenoid valve is set on the oil inlet pipe of carburetor, the oil circuit switch solenoid valve is connected and controls the on-off of the oil inlet pipe;The controller is according to the gas pressure data of the air inlet control the negative pressure switch solenoid valve, the oil circuit switch solenoid valve.Distinguish prior art, the utility model can avoid gas fuel into carburetor, avoid appearing oil-gas mixed combustion, lead to the situation of engine work not normal appears.

The embodiment of the present application provides a kind of concentration control system of refrigerant water of air conditioner.The system includes: controller, dosing pump, medicine tank, refrigerant water pipeline, refrigerant evaporator and at least one sensor;Medicine tank is provided with refrigerant, and medicine tank is connected with refrigerant water pipeline;Dosing pump is connected with controller, for opening in response to dosing instruction sent by controller;Controller is connected with at least one sensor;Each sensor is arranged in the inside of refrigerant water pipeline;Controller is used to obtain the refrigerant concentration measured by at least one sensor;If it is determined that the refrigerant concentration is less than the first preset concentration value, generate dosing instruction, and send to dosing pump;Refrigerant water pipeline is connected with refrigerant evaporator, and refrigerant water in refrigerant evaporator exchanges heat with refrigerant of air conditioner.The system is used to achieve the effect of automatic monitoring and control of the refrigerant concentration of refrigerant water of air conditioner, improve the control efficiency of the concentration of refrigerant water of air conditioner.

The utility model relates to a crusher technical field especially relates to a kind of crusher feeding adjusting device. Including lifting structure, height adjusting structure and control material structure;Lifting structure is used to lift the material to be broken to certain height after, make it enter control material structure;Height adjusting structure is used to adjust the relative inclination angle between both, when inclination is further enlarged, control material structure height can be further adjusted high;Control material structure is used to receive the material to be broken conveyed by lifting structure, controls the output of feeding to crusher.The utility model can flexibly adjust the size of passageway outlet as needed, accurately controls material flow, avoids the abnormal work of crusher due to feeding, improves crushing efficiency and product quality by the cooperation of the baffle of control material structure and control part;Height adjusting structure lets conveyor and control material structure can be adjusted according to the height of crusher feeding port, and operator can complete positioning and fixing without tool or dangerous action, reduces operation difficulty and security risk.

This invention discloses a circuit structure for ESD protection of an LCD, including an LCD module and a circuit board electrically connected to the LCD module. The circuit board includes a reset potential stabilization unit electrically connected to the RES reset pin of the LCD module and a power surge protection unit electrically connected to the power supply terminal. The reset potential stabilization unit and the power surge protection unit cooperate to achieve ESD protection for the LCD. The reset potential stabilization unit includes a pull-up resistor, with its first end electrically connected to the power supply terminal and its second end electrically connected to the RES reset pin. The power surge protection unit includes at least one TVS diode connected in parallel between the power supply terminal and ground. This invention can stabilize the RES reset pin level and reduce ESD sensitivity, discharge ESD surges at the power supply terminal, and achieve ESD protection through the cooperation of two units. The circuit is extremely simple and has low modification costs.

The invention discloses a vehicle and a gas system control method and device thereof. A gas system of the vehicle comprises an air compressor, a dryer, a gas storage cylinder and a gas using component which are connected in sequence. The gas system control method comprises the steps that after a vehicle is powered on, the working load rate of an air compressor in a preset time period is obtained; judging whether the working load rate is smaller than or equal to a preset load rate; if yes, the unloading duration when the air compressor is continuously in the unloading state, the environment temperature and the current air pressure in the air storage cylinder are obtained; and according to the unloading duration, the environment temperature and the current air pressure, an icing trigger event of the gas system is determined, and corresponding protection operation is executed according to the icing trigger event. According to the technical scheme, the working stability of the gas system can be improved, and then the running stability and safety of the vehicle are improved.

The application discloses a driving chip power supply circuit and a display device. The driving chip power supply circuit comprises a voltage comparison module connected to a power supply chip, which is used to generate a first voltage level according to a first power supply and a second power supply; a first power supply module connected to the voltage comparison module and receiving the first voltage level; and a second power supply module connected to the voltage comparison module and receiving the first voltage level. The output ends of the first power supply module and the second power supply module are connected to a driving chip. The first voltage level comprises a high voltage level and a low voltage level. The first power supply module and the second power supply module are selectively turned on according to the first voltage level to provide corresponding power supply voltages to the driving chip. The application improves the power supply of the driving chip of the display device and avoids the problem that the voltage backflow causes the abnormal working of the chip.

The utility model provides an engine oil pan which comprises an oil pan body and a plugging piece, one end of the oil pan body is provided with an end face connecting flange, the end face connecting flange is used for being connected with an opponent piece, the upper portion of the end face connecting flange is provided with a receding groove, and the bottom of the end face connecting flange is provided with an oil receiving portion. The abdicating groove is used for abdicating oil leaked from a crankshaft oil seal of the engine, the oil receiving part is used for receiving the leaked oil, an opening is formed in the oil receiving part, the opening is plugged by the plugging piece, and the plugging piece is detachably connected with the end face connecting flange. According to the engine sump disclosed by the utility model, whether the crankshaft oil seal leaks oil or not can be conveniently observed, the convenience of maintenance can be increased, and after an engine provided with the engine sump is integrated with a motor, the safe and reliable operation of the motor can be ensured.