51results about How to "Real-time detection of working status" patented technology

The invention relates to a method and a device for adhesion detection of a main contact of an alternating-current contactor to solve the problem that the main contact fails to disconnect in abnormality of the contactor. The device comprises an alternating-current contactor major loop, an alternating-current contactor control loop, an adhesion signal detection circuit and a master controller control circuit. The adhesion detection circuit takes signals from the lower end of the alternating-current contactor, an intermediate relay of the contactor control loop and an alternating-current contactor auxiliary contact. The adhesion detection circuit adopts passive output for outputting signals in an open-collector output mode, and the master controller control circuit takes a PLC (programmable logic controller) or MCU (micro controller unit) as the core and is capable of driving the intermediate relay to realize control of the alternating-current contactor and a forestage power source thereof. The device has the advantages of simple structure and stability and reliability in operation, various operating states of the alternating-current contactor can be detected in real time, fault signals are given out immediately once adhesion occurs, and the forestage power source is disconnected through the master controller to guarantee safety of field personnel and property.

The invention relates to a fire alarm control system and a control method thereof. The fire alarm control system comprises a host unit, a battery unit, a direct control unit and a loop unit adopting a two-bus mode, wherein the loop unit comprises a switching circuit, a pulse modulation circuit, a return code current circuit, an analog-to-digital converter and field equipment. With the adoption of the fire alarm control system and the control method thereof, the problems that numerous multi-wire transmission lines exist and have high total failure rate and longer alarm time in the prior art are solved; and a digitized and non-polarized two-bus mode which is developed independently and integrates power supply, communication, control and alarm, so that the judgment for an alarming address only requires 8 ms on the premise that the baud rate is not increased, fire alarm information can be reported simultaneously in 2 seconds even through 255 detection points upload fire alarm information in the same polling period, and accordingly, the response time of fire alarm is shortened greatly.

The invention belongs to the technical field of solar photovoltaic module detection, and specifically relates to a device and a method for monitoring data of embedded solar photovoltaic module data. The device comprises a data acquisition chip, a current sensor, a communication assembly, a temperature sensor, and a bluetooth interface. The data acquisition chip receives operational data of a solar photovoltaic module through the current sensor and the temperature sensor, and performs integral generating capacity calculation and hidden danger judgment according to the operational data. The operational data, the integral generating capacity, and hidden danger judgment results of the solar photovoltaic module are output through the communication assembly. The device uses an embedded microprocessor as the core, and combining with an internet of things technology, detects operating states of the photovoltaic module in real time, so as to realize intelligentized data acquisition and analysis, fault diagnosis, fault location, fault removing and alarm. The device and the method provide a simple solution for intelligentized and remote monitoring of a solar power station system.

The invention relates to the technical field of bodybuilding instruments and relates to a bodybuilding bicycle and an exercise instrument thereof. The bodybuilding bicycle comprises a shell, a bicycle body and a control console. The bicycle body is located in the shell, the control console is located at the front end of the bicycle, a screen is installed on the inner wall of the shell, a speed sensor is arranged on the bicycle body, the speed sensor can monitor the speed of the bicycle in real time, the information is fed back to the control console, the control console controls pictures played by the screen after processing is completed, a user feels that the pictures move along with himself/herself and the user is located in the external environment, and the exercise enthusiasm of the user is improved. A vibration simulation assembly is arranged below the bicycle body in order to enable the user to truly experience the riding pleasure in the external environment, the control console can simulate experience of different road conditions by controlling the motion, frequency and strength of the vibration simulation assembly, a weather simulation assembly is arranged in the shell, different weather conditions can be simulated under control of the control console, and the user can experience the pleasure of outdoor riding sports through the arrangement.

The invention provides an electric heater state detection control method, a computer readable storage medium and an air conditioner. A feedback current value when the electric heater works is detected, electric heater control circuit self-inspection and electric heater body self-inspection are carried out sequentially according to the feedback current value, and if any one of the electric heater control circuit and the electric heater body has a fault in the self-inspection process, a signal is sent to remind and stop work of the electric heater. The real working state of the electric heater is accurately judged through the current value, abnormity is found in time, the electrical safety problem caused by faults of the electric heater body and the electric heater control circuit can be prevented, the intelligent control level of the air conditioner is further improved, and influence caused by faults of the electric heater is reduced.

The invention provides a vibrating displacement signal online detection device internally provided with a valve element of a pilot valve. A valve body is provided with a hollow cavity. One end of the valve body is connected with a positioning nut, and the other end of the valve body is connected with an end cap. A pressure-regulation screw is connected with the positioning nut through a thread. A stop block, a regulation rod, an electric eddy sensor, the conical valve element and a valve seat are arranged in the valve body in sequence. One end of the stop block abuts against one end of the pressure-regulation screw, and the other end of the stop block is connected with the regulation rod. A longitudinal notch is formed in one end of the regulation rod, and a cylindrical through hole is formed in the center of the regulation rod. The electric eddy sensor is of a T-shaped structure and is arranged in the regulation rod in a sleeved mode, and a probe part of the electric eddy sensor stretches out of the regulation rod. A hollow cavity is formed in the electric eddy sensor. A measurement coil is mounted at the top end of a hollow cavity of a probe and led out of the valve body through an extension cable. The regulation rod can move in the axial direction, and the probe of the electric eddy sensor and the valve element are sleeved with a regulation spring in the circumferential direction. The vibrating displacement signal online detection device is simple in structure, easy to dismount and stable in operation, and the influence on the flow field performance of the valve cavity is small.

The invention relates to the technical field of semiconductor processing equipment, and discloses a polishing device for semiconductor preparation. The polishing device comprises a workbench; first stand columns are fixedly connected to the four corners of the upper surface of the workbench; a top plate is fixedly connected to the upper surfaces of the first stand columns; a sliding groove is formed in the middle of the upper surface of the top plate; a sliding platform is glidingly connected to the inner wall of the sliding groove; and sliding rods are inserted in the front side and the backside of the right side surface of the sliding platform. According to the polishing device for semiconductor preparation, a second driving motor, a rotating shaft, a rotating disc, a crank, a connecting plate and the sliding platform are used in cooperation, the second driving motor drives the rotating disc to rotate through the rotating shaft, and the rotating disc drives the sliding table to moveleftwards and rightwards through the crank, so that the polishing area of the device for semiconductor products is further increased, the device can be used for polishing relatively-long semiconductor products, and the working efficiency of the device is further improved.

The invention provides a roller device, which comprises a roller body, a pressure sensor, a pressure stabilizing circuit and a processor. The pressure sensor is arranged on the surface of the roller body or both ends of the roller body, and is used for collecting the pressure data of the roller body. The input end of the voltage stabilizing circuit is connected with the pressure sensor, and the output end is connected with the processor, which is used for stabilizing the pressure data and sending the stabilized pressure data to the processor. The processor is used for determining and countingthe pressure value of the roller body in real time according to the pressure data after the pressure stabilization processing. The pressure stabilization circuit is used to ensure the stability of thepressure value of the roller device, and the working state of the roller can be detected in real time, which is convenient for the staff to carry out subsequent monitoring, use, or maintenance and other operations.

The invention discloses a power distribution and power utilization control system based on an IT power distribution system, which can be applied to the technical field of power utilization safety. According to the invention, the safe power utilization unit is additionally arranged between the distribution box and the load; an insulation monitoring module used for monitoring insulation resistance and stray capacitance of a circuit in the safe power supply unit, an electric parameter monitoring module used for monitoring output electric parameters of the safe power supply unit, and an environment monitoring module used for monitoring working environment parameters in the safe power supply unit are arranged in the safe power utilization unit; when the power distribution system works, the working state of the circuit can be detected in real time, and when the circuit breaks down, the working state of each functional module in the circuit can be controlled through the electric box controller arranged in the safe power utilization unit, so that the function of finding and eliminating potential safety hazards in time is achieved. And meanwhile, the safe power utilization unit and the safe power utilization management platform are wirelessly interacted, so that a worker can timely know the working state of the power distribution system.

The present invention discloses a method and a system for detecting leakage of a drain valve, wherein the method comprises the steps as follows: an inductor reads work parameters of an upstream pipeline of the drain valve and transmits the read work parameters and an inductor identifier to a fault identification unit; the fault identification unit identifies the received work parameters, so as to determine a work state of the drain valve at present; and if the drain valve is in a fault state at present, the fault identification unit transmits fault state information and the corresponding inductor identifier to a host computer, so that the host computer performs display. The method of the present invention can detect the work state of the drain valve in real time, and can timely and effectively discover the problem of the drain valve during a use process, thereby saving energy, and ensuring production safety and product quality.

The embodiment of the invention provides a vending machine, which comprises a storage box for storing a mobile power source, a guide rail device positioned below the storage box, a pushing assembly positioned in the guide rail device, a first optocoupling assembly positioned at the side of the guide rail device, and a transmitting device positioned below the storage box and adjacent to the guide rail device, wherein the pushing assembly moves in the guide rail device to push the mobile power source positioned at the lowest part of the storage box to the transmitting device, and the first optocoupling assembly detects the position information of the pushing assembly when moving in the guide rail device. In the embodiment of the invention, the first optocoupling assembly detects the positioninformation of the pushing assembly when moving in the guide rail device, so that the working state and the vending progress of the vending machine can be obtained in real time.

The invention provides a cleaning brush for an environment-protective embossing roller. The cleaning brush comprises a color-dyeing device, a press-printing cylinder, a rubber cylinder, a laser imaging device, a numerical control device, a signal receiving-sending device, a printing paper conveyor, a fault diagnosing device, an oil ink valve, an operation panel, a machine body and a bookbinding processor, wherein the color dyeing device is arranged right over the press-printing cylinder; the rubber cylinder is mounted on the upper side of the press-printing cylinder; the laser imaging device is connected with the numerical control device; the signal receiving-sending device is connected with the fault diagnosing device via a lead; the printing paper conveyor is connected with the press-printing cylinder; the oil ink valve is connected right under the fault diagnosing device; and the operation panel is mounted on the upper part of the machine body. With the arrangements of the numericalcontrol device, the signal receiving-sending device and the fault diagnosing device, safety and reliability can be improved, fault rate can be reduced and maintenance cost can be lowered; communication efficiency can be enhanced; and work efficiency can be improved and the cleaning brush is suitable for market promotion and application.

The invention provides a novel portable multipath switch quantity signal detector. The signal detector is advantageous in that the signal detector is high in measurement precision and stable in performance and works reliably. The jump timing precision reaches 20 [mu]s. The signal detector comprises a signal input module, a JTAG socket, a multipath switch quantity signal detection board card, a PCI bridge chip, a power circuit and a PC104PLUS port. The signal input module comprises a signal processing circuit and a signal isolation circuit connected with the signal processing circuit. An IO port, a JTAG port, an HPI port, a signal acquisition module, a signal detection module and a jump state and timing data storage module. The output end of the signal acquisition module is connected with the input end of the signal detection module. The output end of the signal detection module is connected with the input end of the jump state and timing data storage module. The signal isolation circuit is connected with the multipath switch quantity signal detection board card through the IO port. The multipath switch quantity signal detection board card is connected with the PCI bridge chip through the HPI port. The PCI bridge chip is connected with the PC104PLUS port.

Dedicated detection device detects AC voltages of each phase at AC side of rectification bridge in excited power box. The dedicated detection device through isolation and electromagnetic induction converts current signal to be detected to linear magnetic signal. Magnetic signal through magneto sensor is converted to linear electric signal. AC voltages detected reflect magnitude of current at bridge arm tested. The phase voltages U1, U2, U3 are converted to current signals at each bridge arm. Hall transducer is utilized as signal acquisition unit. Futures of the invention are easy of installation, easy to connect to control interface.

The invention discloses an automatic control system for instability emergency risk avoidance of a boom pump truck. The automatic control system comprises a detection module, a control module and an execution mechanism, wherein the detection module is used for monitoring the working state of the boom pump truck in real time and mainly monitoring the bidirectional inclination angle of a main platform on the boom pump truck; after real-time data of the detection module is input into the control module, the control module is used for carrying out local real-time operation on the detection data toobtain the current real-time stable state and risk prediction of the boom pump truck; and the control module is used for outputting an execution signal when the risk is about to occur or is occurring.By utilizing the automatic control system for instability emergency risk avoidance of the boom pump truck, the working state of the boom pump truck can be detected in real time, whether the boom pumptruck is about to occur or is occurring is judged, and measures are taken to control the boom pump truck to carry out emergency risk avoidance or self rescue, so that the safety of the boom pump truck is improved.

The invention discloses a ventilation and air conditioning device for urban subway. The ventilation and air conditioning device comprises mounting feet and a collecting box, wherein mounting grooves are formed inside the mounting feet, and springs are arranged on one sides of the mounting grooves; connecting blocks are connected to the upper portions of the springs, an equipment shell is arrangedon the upper portions of the connecting blocks, a fan is arranged inside the equipment shell, and heating pipes are arranged on one side of the fan; and a ventilation pipeline is connected to one sideof the equipment shell, a first driving motor is arranged on the inner wall of the ventilation pipeline, a lead screw is connected to the front end of the first driving motor, and a first sliding block is connected to the outer wall of the lead screw. According to the ventilation and air conditioning device for the urban subway, the mounting grooves are formed in the mounting feet, after the equipment shell is collided, the connecting blocks are driven to move, and the springs move towards the interiors of the mounting grooves, so that most impact force is absorbed by the springs, a certain protection function is achieved, parts inside the equipment shell are prevented from being damaged, and safety of the equipment is improved.

The invention discloses a closed-loop control gas heater based on a wide-range oxygen sensor. The gas heater comprises a burner, wherein a mixing core and a mixing cylinder which are connected with each other are arranged in the burner; a fan assembly is mounted at one end of the burner and comprises a fan motor, and an air-throwing disk is arranged at a position, in the burner, of the output endof the fan motor; a spray rail assembly is arranged on the burner and comprises a gas nozzle; a flame ion sensor and an ignition needle are arranged at the other end of the burner, and the ignition needle is connected with the output end of an ignition driver; and the end, where the ignition needle is located, of the burner is fixedly connected with a heat exchange water jacket, a waste gas diversion cylinder is arranged in the heat exchange water jacket, an exhaust pipe which extends to the outside in a penetrating mode is arranged on the side wall of the water jacket water jacket, and the wide-range oxygen sensor is arranged on the exhaust pipe. Through the gas heater, the problem that in the prior art, the adjustability of automobile gas heating is insufficient can be solved, adjustmentis rapid, the automatic degree is high, and burning economy is good.