42results about How to "Understand the working status" patented technology

The invention relates to a device and a method for monitoring a hydrofoil catamaran flap and tail wing servo system. The device comprises a sensor signal acquisition module, and is characterized by also comprising a digital signal processor (DSP) and an embedded upper computer, wherein the signal output end of the sensor signal acquisition module is connected with the DSP; the DSP is in communication connection with the embedded upper computer.

A vehicle-mounted oil gas recovery system comprises an explosion-proof box body, a central control system, an oil gas recovery unit and a generator set, wherein the oil gas recovery unit and the generator set are arranged in the explosion-proof box body; a ventilation channel is arranged in the explosion-proof box body, and the ventilation channel is correspondingly connected with a first oil gasconcentration instrument; the first oil gas concentration instrument is used for detecting the leakage oil gas concentration of the ventilation channel and transmitting the leakage oil gas concentration to the central control system; and the central control system receives the leakage oil gas concentration sent by the first oil gas concentration instrument and displays the leakage oil gas concentration on a display screen of a cab. The system improves the explosion-proof safety of a vehicle-mounted oil-gas recovery unit, enables a driver to monitor whether oil-gas leakage occurs or not in realtime and prevents safety accidents from occurring due to leakage, meanwhile, the central control system intelligently judges various historical monitoring data and displays the historical monitoringdata on the display screen of the cab, the driver can know the working conditions of all components in all aspects, and the driver is assisted in completing the oil gas recovery work more convenientlyand intelligently.

The invention provides a cloth drying device and belongs to the technical field of textiles. The cloth drying device comprises a rack, a drying box of a rectangular structure is arranged at the upper end of the rack, and a feed inlet and a discharge outlet are formed in the front end and the rear end of the drying box correspondingly. A plurality of heating rollers are arranged in the drying box, the two ends of each heating roller are mounted on the left side wall and the right side wall of the drying box correspondingly through a connecting mechanism, and the heating rollers are arranged in parallel. A drainage system is arranged at the lower end of the drying box, and a cooling system is arranged at the upper end of the drying box. Each heating roller comprises an outer layer and an inner layer, wherein a sealed cavity is formed by the outer layer and the inner layer, and a heating system is arranged in the sealed cavity. A tension detector is further arranged in the drying box. Each connecting mechanism comprises slide rails located on the left and right sides of the drying box and T-shaped bearings directly mounted at the two ends of the corresponding heating roller. First cylinders are fixed to the upper end of the drying box, and the ends of piston rods of the first cylinders are connected with the corresponding T-shaped bearings. The cloth drying device can improve the cloth drying effect and also lower the damage rate of cloth in the drying process.

The invention discloses a non-inductive brushless electric machine controller with the function of real time data recording. The non-inductive brushless electric machine controller comprises an MCU (microprogrammed control unit) controlling unit, a driving IC (integrated circuit) unit, a temperature protection unit, a voltage protection unit, a real-time measuring circuit during the operation of an electronic speed controller, a data recording memorizer and a position sensor. The real-time measuring circuit during the operation of an electronic speed controller is used for measuring the real-time parameters of motor current, battery voltage and controller temperature, and transmits the various measured parameters to the MCU controlling unit. The data collection is achieved through the MCU controlling unit, the various data collected is stored in the data recording memorizer. The position sensor is used for measuring flight height and the data of flight height is stored in the data recording memorizer through the MCU controlling unit. According to the non-inductive brushless electric machine controller with function of real time data recording, the information of current, voltage, temperature, motor speed, accelerator opening and the like of a dynamical system is recorded and stored so that operating efficiency of the dynamical system is better improved.

The invention discloses a tension type fence controller and a tension type fence controlling method. The tension type fence controller comprises a tension detection module, an input module, a controller, a display module and an alarm module, wherein the tension detection module is connected with the controller through a communication module, the controller is further connected with the controller and the display module, respectively, and the alarm module is connected with the controller. The tension type fence controller dynamically displays the value of tension of a fence and also is provided with an alarm function, and the tension type fence controller is convenient for the operating personnel to know the working condition of an electric fence boundary and also capable of enhancing the warning function of the electric fence and improving the protection capability of the electric fence boundary.

The invention discloses an IGBT driving and wave-by-wave current limiting circuit control method, which belongs to the field of UPS power supply with inductive load and rectification load. The collected current value is transmitted to the wave-by-wave current-limiting circuit; S2, the wave-by-wave current-limiting circuit compares the collected current value with the set current-limiting threshold, and when the current value exceeds the set current-limiting threshold, the wave-by-wave current limiting The circuit enables and generates the wave-by-wave current limit enable signal; S3, the wave-by-wave current limit enable signal is transmitted to the microprocessor through the level conversion circuit, and the microprocessor turns off the IGBT transistor; S4, the current of the transformer drops, the current value Below the set current limiting threshold, the IGBT transistor is turned on again; S5, repeating steps S2 to S4, until the current value of the transformer is lower than the set current limiting threshold when the IGBT transistor is turned on, the present invention has the ability to accurately limit each The effect of current peaks beyond the limits of the main power tube.

The invention relates to a method for identifying weights of cars based on dynamic strain of bridges, comprising the following steps of: arranging the dynamic strain measurement devices on the vertical symmetrical section of a bridge; implementing a dynamic car test on a traffic lane of the bridge on which the dynamic strain measurement devices are installed, collecting the data at the same time, and transmitting the data to a computer; adopting the limited simulation to compute the theoretical dynamic strain, extracting dynamic strain time-history curve formed by the dynamic strain results, and comparing the curve with the real measurement value and analyzing to obtain the relational expression T=f(nu,epsilon) or the curve among the running speed, the peak value of the dynamic strain and the weight of the car; automatically computing the running speed through a piece of software according to the time difference and section distance when the dynamic strain of each section reaches the peak value; obtaining the average value of the peak value of each measurement point of the same section; and putting the average value in the relational expression T=f(nu,epsilon) or the curve to compute or compare, and then obtaining the weight of the car passing through the section. The method is suitable for identifying the weights of the cars on the bridge; and the cost of the measurement equipment is low, so that the method is easy to realize.

The invention relates to the technical field of vehicle-mounted emergency starting power supplies, in particular to an emergency starting power supply capable of stabilizing output power, which comprises a starting battery and a shell, the shell is provided with a plug, a first interface, a waterproof assembly, a heat dissipation assembly and an illumination assembly, and the heat dissipation assembly comprises a heat dissipation fan and a plurality of graphene patches. By means of the waterproof assembly, when the emergency power supply is in rainy days, rainwater is not prone to flowing into the first interface, the interior of the emergency power supply is kept dry, the situation that dust or moisture enters the first interface to cause damage is avoided, and the service life of the starting battery is prolonged; graphene is high in heat conductivity coefficient, rapid in heat dissipation and good in flexibility, the size of the starting power supply is reduced, the starting power supply is convenient to carry, more starting batteries can be contained, the power carrying capacity of the emergency power supply is increased, outdoor use is facilitated, and heat absorbed by graphene can be better dissipated through assistance of a cooling fan.

The invented earphone with volume protection comprises an earphone and a signal line. A signal receiver is setup in the earphone. The signal receiver is connected to a signal detecting circuit. The signal detecting circuit detects sound signal also. Based on the detected intensity of sound signal, the signal detecting circuit controls operating mode of the signal receiver.

The invention discloses a five-degree-of-freedom 3D printer, and relates to the technical field of 3D printers, the five-degree-of-freedom 3D printer comprises a base, the top of the base is provided with a protection box, the inner wall of the protection box is fixedly connected with a printer body, the top of the printer body is provided with a display protection device, and the top of the base is provided with a rotating groove; the inner wall of the rotating groove is rotationally connected with a rotating column, the top end of the rotating column is fixedly connected with the bottom of the protection box, and a first positioning groove is formed in the outer surface of the rotating column. According to the printer, the printer body can be rotated by a worker more conveniently, so that the worker can observe a printed finished product more conveniently at multiple angles, and the worker can know the operation condition of the printer body in time and can use the printer more conveniently.

A bluetooth wireless under-cabinet type water purifier provided with an external display screen and an intelligent water saving technique is disclosed. A source-water TDS probe, a source-water flowmeter, a low-pressure switch, a water-feeding magnetic valve, a pressurizing pump, a high-pressure switch, a pure-water flowmeter, a pure-water TDS probe, a first magnetic valve and a second magnetic valve are separately and electrically connected to a water purifier controller through wires. The water purifier controller is provided with a TDS testing module, a first bluetooth module and a first MPU. The water purifier is provided with the external display screen, and the display screen is moved out of the water purifier and put on a table surface or hung on a wall, and therefore working conditions, the time of changing a filter element, the flow rate of source water, a TDS value of the source water, the flow rate of pure water, the TDS value of the pure water, and the like can be acquired visually by a user. The water purifier controller automatically selects combination of different waste water ratios to discharge waste water according to different TDS values of the source water and by combining two waste water ratios and the two magnetic valves, thus achieving an objective of saving water.

The invention discloses an operation control device for an electrolyte tank. A tank control machine (2) is provided with a communication interface (1) inside, an interface message processor (3) is connected with the communication interface (1), a CPU controller chip (7) is connected with the communication interface (1) through a buffer circuit (12), the CPU controller chip (7) is connected with a preheating indicator light (4), a broken indicator light (5), and a normal indicator light (6). In order to facilitate field observation, the invention adds an arrangement of a 'broken tank' state, and adds the indicator lights displaying 'preheating', 'broken' and 'normal', so that a field administrator can intuitively know the current working condition of the electrolyte tank, moving the anode is avoided in 'preheating' the tank, the operation security is ensured, and meanwhile the electrolyte tank displaying 'broken' is paid with more attention to reduce the possibility of the sink condition. The structure is simple, the operation is easy, and the cost is low.

The invention discloses a co-cathode photovoltaic controller system which comprises a constantan wire A, a constantan wire B, a charging MOS module, a discharging MOS module, an LCD man-machine interface, an MCU processor and a binding post; the constantan wire A is connected with an S-pin and a B-pin of the binding post; the constantan wire B is connected with a B-pin and an L-pin of the binding post; and the constantan wire is of a U-shaped structure. According to the invention, the U-shaped constantan wires are connected to a charging loop cathode and a discharging loop cathode and serve as current sampling resistors respectively, production processes are reduced, the system reliability is enhanced, space is saved for large-power wiring of a circuit board, the width of a laid copper foil in large-power wiring is increased, loss of the circuit is reduced, the LCD man-machine interface can be used to monitor the voltage of a solar cell panel in real time, parameters of the solar cell panel can be set, and thus, workers can know the working condition of the controller visually.

The invention discloses an IGBT driving and wave-pushing and current-limiting circuit control method, and belongs to the fields of a UPS power band inductive load and a rectifying load; the method comprises the steps of S1, acquiring the current value of a transformer during conduction of an IGBT transistor in real time, and transmitting the acquired current value to a wave-pushing and current-limiting circuit; S2, making comparison between the acquired current value and a set current limiting threshold value by the wave-pushing and current limiting circuit, and when the current value exceedsthe set current limiting threshold value, enabling the wave-pushing and current-limiting circuit to generate a wave-pushing and current-limiting enabling signal; S3, transmitting the wave-pushing andcurrent-limiting enabling signal to a microprocessor through a level conversion circuit, wherein the microprocessor turns off the IGBT transistor; S4, if the current of the transformer is reduced, andthe current value is lower than the set current limiting threshold value, enabling the IGBT transistor to be conducted again; and S5, repeating the steps S2 to S4 until the current value of the transformer is lower than the set current limiting threshold value when the IGBT transistor is conducted. By virtue of the method, each current peak value exceeding the limit value of a main power tube canbe accurately limited.

The present invention provides a method for predicting adaptability of wireless communication equipment based on bit error rate. By determining the interference level and bit error rate of wireless communication equipment in complex electromagnetic field environment, the adaptability of communication equipment in complex electromagnetic environment is predicted. The method includes: determining the critical interference radiation power of the wireless communication device under different interference levels; calculating the residual interference amount according to the critical interference radiation power combined with the environmental radiation power; and normalizing the residual interference amount to obtain the normalized A normalized residual interference amount; according to the normalized residual interference amount, a bit error rate of the wireless communication device is obtained, and the adaptability of the wireless communication device is predicted according to the bit error rate.

The invention discloses an operation control device for an electrolyte tank. A tank control machine (2) is provided with a communication interface (1) inside, an interface message processor (3) is connected with the communication interface (1), a CPU controller chip (7) is connected with the communication interface (1) through a buffer circuit (12), the CPU controller chip (7) is connected with apreheating indicator light (4), a broken indicator light (5), and a normal indicator light (6). In order to facilitate field observation, the invention adds an arrangement of a 'broken tank' state, and adds the indicator lights displaying 'preheating', 'broken' and 'normal', so that a field administrator can intuitively know the current working condition of the electrolyte tank, moving the anode is avoided in 'preheating' the tank, the operation security is ensured, and meanwhile the electrolyte tank displaying 'broken' is paid with more attention to reduce the possibility of the sink condition. The structure is simple, the operation is easy, and the cost is low.