30 results about "Programmable logic controller" patented technology

The invention relates to a statistical principle and programmable logic controller (PLC) technology-based method for measuring and calculating discharge amount of a tobacco shred storage cabinet. The method comprises the following steps of: 1) acquiring a plurality of groups of field bottom belt running experimental data to acquire multiple groups of data of bottom belt frequency converter running frequency and bottom belt running speed, and obtaining an equation f(x)=ax+b based on statistical regressive analysis; 2) performing definite integration on the f(x) by using a PLC cyclic interrupt function block so as to obtain the running length of the bottom belt after multiple times of start and stop; 3) calculating the discharge amount of the shred storage cabinet through a function block (FB) in the PLC by using a formula 'shred storage cabinet discharge amount = bottom belt discharge length * cabinet feeding quantity/distribution length during feeding the cabinet'; and 4) performing high and low speed conversion of stub bar/tail during discharging of the shred storage cabinet in the FB of the PLC by using the real-time discharge length of the bottom belt, performing tail stop and starting related control in advance in the next cabinet. Any hardware detection equipment of the storage cabinet is not needed, many disadvantages and measurement errors caused by detection elements are solved, the accuracy of a system is improved, and the cost is reduced.

The invention provides a cast pipe conveying device. The cast pipe conveying device comprises a first transportation track, a first lifting mechanism arranged at the tail end of the first transportation track, a pipe conveying trolley moving in the front-back direction, a second lifting mechanism for elevating cast pipes, a second transportation track for transporting the cast pipes in the front-back direction, a travel switch structure arranged below the second transportation track, a triggering structure arranged on the front side of the pipe conveying trolley, a temperature sensor and a programmable logic controller, wherein the temperature sensor is arranged on one side of the head end of the second transportation track and used for sensing whether the cast pipes move to the preset position on the second transportation track or not. According to the provided cast pipe conveying device, the maximum distance of the forward movement of the pipe conveying trolley can be limited throughthe triggering structure and the travel switch structure, and the problem that the forward movement amount of the pipe conveying trolley is too large, the pipe conveying trolley collides with other components in the device is solved; and through the temperature sensor, whether the cast pipes reach the preset position on the second transportation track or not can be accurately sensed, and mutual collisions of the cast pipes on the second transportation track are effectively avoided.

The invention discloses a mass spectrometer based RH dynamic decarbonization method and device for real-time calculation of carbon content when in vacuum oxygen decarburization, and realization of automatic gun lifting and stopping of oxygen blowing when the carbon content of molten steel reaches target carbon content. The decarbonization method comprises the following steps: when a heat is started, the weight, initial component and target component data of the molten steel is collected, in the smelting process, waste gas real-time flow rate acquired by a waste gas flow meter and waste gas real-time component acquired by a mass spectrometer are collected; according to relevant information of the molten steel, and relevant data of the collection and analysis time delay of the waste gas and gun lifting and blowing-stop time delay of a top gun, the carbon content of the molten steel is calculated in real time, and when the current carbon content is smaller than or equal to the target carbon content, a PLC (programmable logic controller) is notified to stop oxygen blowing and lift the gun. The mass spectrometer based RH dynamic decarbonization device can realize the automatic control of mass spectrometer based RH dynamic decarbonization, is precise in control of process and high in production precision, can shorten the smelting cycle, and reduces the cost.

The invention relates to a method for executing a programmable logic controller (PLC) code. The hardware of a PLC comprises at least one high-performance Digital Signal Processing (DSP) and a RAM of a memory module. A software part comprises at least one main program applied to the DSP and a program translated DSP code of the PLC of a cycle ladder diagram. The invention translates a PLC program into the DSP code and executes the PLC code in the DSP. The PLC code is coated in the main program of the DSP so that the cycle scanning time of the PLC is not limited by the transmission speed of a communication interface, thereby the response ability of a system can be effectively improved.

The invention relates to an intelligent power supply device for a low-temperature etching-free iron plating process, which is characterized in that three-phase alternating current supplies power for a silicon controlled rectifying circuit; an input end of the silicon controlled rectifying circuit is connected with a signal output end of a pulse signal generator; an output end of the silicon controlled rectifying circuit is connected with low-temperature iron plating loads; and signal output ends of a synchronizing signal generator and a PLC (programmable logic controller) are respectively connected with a signal input end of the pulse signal generator. The invention also discloses a power supply method of the intelligent power supply device. Phase-shifting control signals generated by the PLC are used for controlling the pulse signal generator, thus adjusting AC (alternating-current) and DC (direct-current) amplitudes; and AC and DC switching signals generated by the PLC are used for mutually switching between AC output and DC output. The power supply device is used for setting output duration of DC signals and output duration of AC signals, can be controlled automatically without manual operations, and is strong in reliability of power supply and convenient to operate.

The embodiment of the invention provides a biogas fermentation gas supply engineering control system, comprising a master control sub-system, a programmable logic controller (PLC) control sub-system, a local control sub-system and a controlled sub-system, wherein the PLC control sub-system is respectively connected with the master control sub-system and the local control sub-system; the controlled sub-system is connected with the local control sub-system; the controlled sub-system comprises a material collecting unit, a degritting blending unit, a biogas generating unit, an air storage unit, a mud-water separating unit and a biogas power generation unit; the master control sub-system is used for automatically controlling the controlled sub-system through the PLC control sub-system; and the local control sub-system is used for switching the controlled sub-system between a local manual control state and a remote control state. By adopting the system, the instantaneity, the stability and the reliability of a biogas fermentation gas supply system are significantly improved; information management is facilitated; the operating cost is reduced; the working efficiency is improved; an accident is prevented; and the biogas fermentation gas supply engineering control system has high practical application value.

The invention discloses a three-dimensional printing table which comprises a rack, a bottom surface support, surrounding supports, a printing head positioning system and a support positioning system,wherein the printing head positioning system comprises a microcontroller, a printing head, a stepper motor, and a corresponding belt and polished rod transmission component; the bottom surface supportand the surrounding supports are formed by discretely combining a plurality of micro supports; the support positioning system comprises a programmable logic controller (PLC) and a plurality of air cylinders connected with the PLC; and all the micro supports are correspondingly connected with the air cylinders, and can be driven by the air cylinders to perform positioning motion independently andto be spliced to form a support group frame. The invention further discloses a method for multi-sided support printing by adopting the three-dimensional printing table. Through the three-dimensional printing table disclosed by the invention, the precise integrated 3D printing of a suspended part is achieved, and the advantage of printing a suspended part provided with a complex curved surface is more obvious; and all the support components are recycled, no printing support is needed in the printing process, a lot of raw materials are saved, the post-processing process is simplified, and the time from model printing to product completion can be shortened.

The invention provides fixed-size production equipment of a steel rope. The fixed-size production equipment comprises a plurality of wire drawing machines, wherein steel wires drawn by the wire drawing machines are fed into a twisting machine to be twisted; a strand twisted by the twisting machine is input into a crank closer to form the steel rope; the fixed-size production equipment is characterized in that: a first upper pinch roller and a first lower pinch roller are arranged above and below each steel wire respectively; a steel wire encoder is arranged on the first upper pinch roller or the first lower pinch roller; a second upper pinch roller and a second lower pinch roller are arranged above and below each strand respectively; a strand encoder is arranged on the second upper pinch roller and the second lower pinch roller; a third upper pinch roller and a third lower pinch roller are arranged above and below the steel rope respectively; a steel rope encoder is arranged on the third upper pinch roller or the third lower pinch roller; and the steel wire encoder, the strand encoder and the steel rope encoder are connected with a programmable logic controller (PLC). By using the fixed-size production equipment provided by the invention, the tensile strength of the steel rope is greatly improved, the efficiency is greatly improved and the working time is saved.

The invention provides a material state monitoring system for a freight train. The material state monitoring system comprises a locomotive monitoring subsystem and a plurality of compartment monitoring subsystems. Each compartment is provided with one compartment monitoring subsystem. The locomotive monitoring subsystem comprises a wireless access point, a master station directional antenna connected with the wireless access point, a first programmable logic controller (PLC) connected with the wireless access point, and an RFID read and write system. Each compartment monitoring subsystem comprises a wireless client side, a slave station directional antenna, a slave station PLC and a first RFID read and write system, wherein the slave station direction antenna is connected with the wireless client side, the slave station PLC is connected with the wireless cline side and a compartment material collecting device, and the first RFID read and write system is connected with the slave station PLC. The material state monitoring system for the freight train can monitor the material state in real time and monitor the state change of materials in the transporting process in real time.

The invention discloses a squeezing safety and automatic alarm device of a diaphragm filter press. According to the device, a PLC (Programmable Logic Controller) is arranged to automatically control the operation; a digital display pressure controller is arranged on an oil cylinder body of a hydraulic system; an intelligent pressure transmitter is arranged on a diaphragm squeezing water pipeline;the digital display pressure controller and the intelligent pressure transmitter are connected with the PLC; a pressure switch is connected with the intelligent pressure transmitter; a text display device is connected with the PLC; a buzzer alarm is connected with the PLC; a squeezing pump switch is connected with the intelligent pressure transmitter; a hydraulic pump switch is connected with thedigital display pressure controller; the digital display pressure controller is installed on the oil cylinder body of the hydraulic system; and the digital display pressure controller is provided witha pressure contact lower limit, a pressure contact upper limit and a pressure contact ultimate upper limit. According to the invention, the use safety of the whole equipment of the diaphragm filter press is ensured, a burst accident is avoided during squeezing of a diaphragm filter plate, the safety of personnel on a working site is ensured, and the economic benefit is improved.

The invention relates to a function safety monitoring development and demonstration system for major hazard source equipment and belongs to the technical field of function safety monitoring. The system comprises a safety control cabinet, a safe PLC (programmable logic controller) arranged in the safety control cabinet, a pattern touch terminal, safety input equipment, and safety output equipment, and also comprises a quadrangle frame and an apparatus layer which are connected into a whole up and down, a safety grating, a non-contact magnetic safety door, a mechanical safety door, an alarm device, an operation button, and a safety carpet, wherein the safety grating, the non-contact magnetic safety door and the mechanical safety door are arranged at three sides of the quadrangle frame; the alarm device is arranged above the quadrangle frame; the operation button is arranged on a panel of the apparatus layer; the safety carpet is arranged on the ground at one side of the quadrangle frame, and monitored high-speed rotation equipment is arranged inside the quadrangle frame. The system provides four effective protective measures, and problems that operating personnel enter into a danger area or various human injuries caused by misoperation are effectively avoided.

The invention discloses a universal programmable logic controller (PLC) communication module for a field bus, which is characterized in that a first communication interface connected with a Modbus transmission control protocol (TCP) slave station communication stack is a Modbus TCP interface; a second communication interface and a third communication interface which are connected with a Modbus remote terminal unit (RTU) master station communication stack are a Modbus RTU interface I and a Modbus RTU interface 2 respectively; a fourth communication interface connected with a Profibus master station communication stack is a Profibus special bus interface; a fifth communication interface connected with a Can master station communication stack is a Can special bus interface; and a sixth configuration interface connected with a transmission control protocol-internet protocol (TCP-IP) communication stack is used for controlling the working states of the second communication interface, the third communication interface, the fourth communication interface and the fifth communication interface. The universal PLC communication module for the field bus is capable of realizing the simultaneous data interaction with various types of bus equipment according to configurations.

The invention discloses a sewage treatment system, which comprises a cloud server, a programmable logic controller (PLC), a sewage treatment unit and a water quality analysis unit. The PLC is electrically connected with the sewage treatment unit; the cloud server is in wireless connection with the PLC and the water quality analysis unit; the water quality analysis unit is used for acquiring the sewage water quality parameters of all links during the sewage treatment process, and transmitting the sewage water quality parameters to the cloud server; the cloud server is used for storing the sewage water quality parameters and adjusting parameters, and distributing the corresponding adjusting parameters to the PLC according to the current sewage water quality parameters; the PLC controls the sewage treatment unit to execute corresponding action according to the adjusting parameters; the sewage treatment unit is used for staged-treating sewage according to the adjusting parameters until theemission standard is met. The sewage treatment system provided by the invention has the characteristics of high automation degree and deep sewage purification treatment degree.

The invention relates to an intelligent lock compatible with second generation identity cards. The intelligent card comprises an electronic control lock, a fingerprint recognition device, an IC card recognition device and an identity card recognition device, wherein a control box is mounted on one side of the electronic control lock, a programmable controller and a communication interface connected with the programmable controller are mounted on the inner side of the control box, and the communication interface is mounted on one side of the control box and used for carrying out information transmission operation between the programmable controller and a server; the fingerprint recognition device is connected with the programmable controller and used for carrying out fingerprint recognitionoperation; the IC card recognition device is mounted on the inner side of the control box, and a first button switch is connected between the IC card recognition device and the programmable controller; the identity card recognition device is mounted on the inner side of the control box, and a second button switch is connected between the identity card recognition device and the programmable controller. The intelligent lock compatible with second generation identity cards can be convenient for different unlocking persons to carry out unlocking operation, and is energy-saving and environmentally-friendly.

The invention provides a pulp-viscosity detecting system for circulation of the production line of corrugated boards and a detecting method. The pulp-viscosity detecting system comprises a first tankbody, a second tank body and a PLC (Programmable Logic Controller), wherein the first tank body is arranged at the upper side of the second tank body; the upper end of the first tank body is connectedwith a feeding valve, a full-material detection point is arranged on the side wall of the upper part of the first tank body, and the lower end of the first tank body is connected with a discharging valve; the discharging valve is connected with the interior of the second tank body, a timing detection point is arranged on the side wall of the upper part of the second tank body, and the lower end of the second tank body is connected with a liquid discharging valve, wherein the feeding valve, the full-material detection point, the discharging valve and the timing detection point are respectivelyconnected with the PLC by signals. The pulp-viscosity detecting system and the detecting method provided by the invention have the beneficial effects that the errors caused by manual work can be avoided, the detecting accuracy is high, and guarantee is provided for obtaining glue with good quality and accurate viscosity.

The invention relates to hoisting equipment used in a special environment and especially relates to a crane for automatically positioning and aligning at the position to search an object in the corresponding position in a nuclear radiation environment. The crane is characterized in that a guide rail of a bridge structure is provided with a small vehicle, two ends of a crane span structure are provided with large vehicle operation mechanisms, the small vehicle comprises a lifting mechanism and small vehicle operation mechanisms, the large vehicle operation mechanisms, the lifting mechanism and the small vehicle operation mechanisms are provided with coding sensors, the coding sensors are connected to a programmable logic controller, the crane span structure and the small vehicle are respectively provided with video surveillance cameras, the video surveillance cameras are connected to a video display terminal by data lines, and the coding sensors comprises 6ES7315-DP PLC and PSM58 absolute value coding sensor. The crane realizes remote unmanned operation and accurate positioning operation of cargo lifting transport. After the crane goes to a preset position, an intelligent suspender can automatically align at a cargo case and then carry out automatic capture and then the crane automatically goes to the preset position.

Provided is a security and protection system pressure regulating device no-load pressure regulating electron outage method. Through a no-load pressure regulating outage indicator of an upper computer with a prompt no-load pressure regulating outage indicator, a no-load pressure regulating mode is selected, then no-load pressure regulating commands are sent to a programmable logic controller, the programmable logic controller transmits and judges a state of a security and protection system pressure regulating device master control switch relay protector through a security and protection system pressure regulating device discrete magnitude input module, and if the state of the security and protection system pressure regulating device master control switch relay protector is an open state, discrete magnitude is called for activating an output module to carry out closing operation. Finally, automatic outage before no-load pressure regulating can be achieved, and the consequence that a pressure regulating device is damaged so as to cause casualties easily can be avoided.

The invention discloses a safety protection device for a laser automatic unpacking machine. The device comprises a switch connecting sleeve and a switch pedestal, wherein the switch pedestal is cylindrical and one end of the switch pedestal is provided with an end cover; the switch connecting sleeve is arranged in the switch pedestal and is connected with the end cover through a spring; a switch and a roller are fixedly arranged in the switch connecting sleeve; the roller is connected to the inner wall of the switch connecting sleeve through a shaft; the end face of the roller is provided with a plurality of through holes which are uniformly distributed along the circumference centered on the shaft; the through holes are aligned with a receiver on the switch; and when the spring is in a natural state, the roller extends out of the switch pedestal. In the invention, movement of a packing box on a conveying mechanism is converted into an electric signal, and data processing is performed through a PLC (Programmable Logic Controller) to control turn-on and turn-off of a laser device; laser is prevented from irradiating the same position on a sealing compound for a long time so as not to cause a fire accident; and compared with a rotary encoder, a photoelectric encoder has a simple structure and low cost.

The invention provides a device for rapidly detecting bunching head defects of steel wires. A first light source emitter is electrically connected with a first camera unit; a second light source emitter and a second camera unit are electrically connected with each other, and are placed according to a set position arrangement mode; the first camera unit acquires a first image forming an angle thetawith the X axis, transmits the first image to an image processing unit, and calculates cord fabric winding quality; the second camera unit collects a second image forming an angle alpha with the X axis, transmits the second image to a matrix black grid measurement unit, and calculates cord fabric winding quality; the detection unit receives images and results transmitted by the matrix black gridmeasurement unit and the image processing unit, analyzes the cord fabric winding quality at all angles of the bunching heads of steel wires, compares the cord fabric winding quality with set qualifiedparameters, and outputs a comparison result to a programmable logic controller. The device can achieve the independent online detection of the position of each bunching head, reduces errors, and improves the working efficiency.

The invention discloses a convenient-to-charge photovoltaic power supply assembly, which comprises a frame. A cabinet door is arranged on one side of the frame. One end of the cabinet door is connected with a pull ring close to the bottom of the frame. One end of the interior of the frame, far away from the cabinet door, is provided with a workbench and a shell positioned above the workbench. A temperature sensor, a PLC (programmable logic controller) single-chip microcomputer, an ampere meter, a voltmeter and a dry powder ejector are arranged in the workbench. The temperature sensor, the ampere meter and the voltmeter are both in control connection with the PLC single-chip microcomputer. Both the ampere meter and the voltmeter are electrically connected with the dry powder ejector. The PLC single-chip microcomputer is in control connection with the dry powder ejector. A charging circuit is arranged in the shell. An input plug is arranged at one end of the shell, and an output positiveclamp and an output negative clamp are arranged at the other end of the shell. One side of the top surface of the shell, positioned closer to the input plug, is provided with an indicating lamp. Theconvenient-to-charge photovoltaic power supply assembly is convenient to use, small in size and easy to carry. The charging voltage and the charging current of the convenient-to-charge photovoltaic power supply assembly can be adjusted, so that the convenient-to-charge photovoltaic power supply assembly is wide in application range. The normal operation of the photovoltaic power supply assembly isguaranteed.

The invention discloses a method for quickly generating a programmable logic control function block code, which comprises the following steps of: establishing a mathematical model, and compiling a corresponding performance function based on Simulink in Matlab software; creating the mathematical model into a subsystem, and then carrying out subsystem parameter configuration; carrying out system compatibility detection on the mathematical model, and building a simulation model of the controlled object on the basis of passing the detection; according to the simulation model, using simulation of Simulink to obtain an optimal solution of a control algorithm; according to a controlled object controller development environment, a programmable logic control function block code is generated from a control algorithm; and then the code is imported into a controller development environment of the controlled object, and software and hardware debugging is carried out until the actual requirements and functions of the controlled object are realized. According to the technical scheme provided by the invention, a reference can be provided for compiling a complex algorithm of the programmable logic controller based on a powerful computing power and a flexible programming mode of the Matlab, and the system design and debugging time is shortened.

A full-automatic wort oxygenated yeast adding machine and a wort oxygenated yeast adding method relate to the technical fields of multi-material mixing processes of biological engineering, fermentation engineering, biological pharmacy, fine chemical engineering and chemical engineering. The full-automatic wort oxygenated yeast adding machine comprises a stand, a PLC (Programmable Logic Controller) control cabinet and a Venturi tube, wherein the PLC control cabinet is arranged on the outer side of the upper end of the stand; the Venturi tube is arranged above the stand; and the full-automatic wort oxygenated yeast adding machine is externally connected with an air compressor, a cold wort inlet, a fermentation tank, a yeast propagating tank and a steam pressure reducing station. The wort oxygenated yeast adding method comprises the following steps of: introducing cold wort through the cold wort inlet; introducing air into the air compressor; introducing yeast into the yeast propagating tank; mixing the cold wort, the air and the yeast in the Venturi tube; after mixing enabling the mixture to enter the fermentation tank. The wort oxygenated yeast adding method disclosed by the invention is feasible; due to the application of an air quality flowmeter and a volumetric flowmeter, reliable preconditions for accurate addition of oxygen and yeast to the wort are provided; the establishment of a mathematical model method provides reliable reference for the accurate addition of the oxygen and the yeast to the wort; due to the application of an open-loop control principle, the phenomenon of feedback regulation lagging in a closed-loop control is avoided; and the automatic control over the whole process is realized, so that the labor intensity and the human error probability are greatly reduced and further the quality and the uniformity of products are greatly improved.

The invention provides comprehensive environment protection detection and treatment equipment, which comprises an air detection box, a support frame, an air detection instrument, a protection case structure, a fixing block, a push rod, a water storage box, a water inlet head, a connector, scale lines, a placement bag structure, a placement frame structure, a treatment disc structure, an air suction cover structure and a PLC (Programmable Logic Controller), wherein the air detection box is arranged at the left upper part of the protection case structure; the air detection instrument is arrangedat the middle left side of the upper surface of the protection case structure through the support frame; the fixing block is welded at the left end of the protection case structure, and the push rodis welded at the upper end; the water storage box is welded at the right side of the inside of the protection case structure, and the water inlet head and the connector are respectively welded at theupper end. The comprehensive environment protection detection and treatment equipment has the beneficial effects that through the arrangement of the air suction cover structure, external air can be favorably and conveniently filtered; meanwhile, workers can also conveniently inhale the filtered air; further, the workers can favorably and conveniently work in environment with polluted air.

The invention discloses an injection mold for manufacturing a PLC (programmable logic controller) cover, wherein the injection mold comprises a moving clamp plate, square iron, a moving platen, a fixed die plate, a front internal mold, a slide block, a guide slipper, a front internal mold insert, a slide block mold insert, a core mold insert, a stripper plate, a fixed clamp plate, a sprue bushing, a water nozzle crochet hook, a stop screw, a tension rod, an ejector retainer plate, an ejector base plate, a push rod and a guide block. The injection mold has simple structure, uses one mold and four cavities, reduces the cost, and uses a wagon top and double-slope projection structurally; the wagon top projection speed is controlled by using the difference of angles; the problem that the injection mold is easy to deform and easy to project for deformation is solved so as to ensure the product quality; and the injection mould has innovation technically, and has good effect.