15results about How to "Achieve self-supply" patented technology

The invention is suitable for the technical field of cable detection, and discloses cable pipe diameter monitoring equipment and a cable pipe diameter monitoring method. The cable pipe diameter monitoring device comprises a support, a monitoring mechanism and a walking mechanism. The monitoring mechanism is connected to the support and comprises a monitoring device based on the friction nanometer generator, and the monitoring device is used for monitoring the change of the pipe diameter of the cable. The walking mechanism is connected to the support and used for moving in the extension direction of the cable so as to drive the support and the monitoring device to move in the extension direction of the cable. The cable pipe diameter monitoring equipment provided by the invention can be used for monitoring the pipe diameter change of the cable, and a worker can judge whether the cable is coated with ice or broken according to the pipe diameter change of the cable, so that the worker can further check and maintain the cable of which the pipe diameter is changed, and the safety and reliability of cable power transmission are ensured. Moreover, by adopting the monitoring device based on the friction nanometer generator, the self-energy supply of the monitoring device can be realized.

According to the novel self-resetting energy dissipation supporting device, a first steel pipe and a second steel pipe are arranged at the two ends of a supporting cylinder from outside to inside correspondingly, and the first steel pipe and the second steel pipe are connected in a sleeved mode; a first elastic assembly, a second elastic assembly and a magnetorheological fluid cavity are sequentially connected in the supporting cylinder in the direction from the second steel pipe to the first steel pipe, the second elastic assembly is arranged in the first elastic assembly, a partition plate is fixedly connected to the end, close to the second steel pipe, of the first steel pipe, and one end of the first elastic assembly is fixed to the second steel pipe. One end of the second elastic assembly is fixed to the second steel pipe, the other end of the second elastic assembly is movably connected to the first steel pipe, the first steel pipe penetrates through the magnetorheological fluid cavity, one end of the first steel pipe is connected with the second steel pipe, and the other end of the first steel pipe extends out of the supporting cylinder. According to the device, the energy dissipation performance can be effectively improved through the multi-layer energy dissipation and shock absorption device, meanwhile, different energy dissipation structures can cope with different shock strengths, and the multi-stage and layered energy dissipation effect is achieved.

The invention discloses a wireless passive temperature measuring device used in a large-temperature-difference environment. The wireless passive temperature measuring device comprises a large-temperature-difference thermoelectric energy conversion device, an energy management and storage part, a wireless temperature measuring part and an upper computer. The large-temperature-difference thermoelectric energy conversion device is used for converting heat energy in a large-temperature-difference environment into electric energy, effective collection of energy is achieved, and the hot end of the energy conversion device can work in a high-temperature environment. The energy management and storage circuit is used for adjusting the electric energy generated by the thermoelectricity, ensuring that the output voltage is stable, and storing the electric energy in an energy storage device for a subsequent circuit to use; the temperature measuring circuit is matched with a high-precision temperature sensor and is used for monitoring and collecting temperature data in real time; the wireless communication circuit is used for monitoring and collecting temperature data in real time; and the upper computer is used for processing, displaying and storing the received temperature data in real time. According to the invention, self energy supply can be realized through energy collection in a large temperature difference environment, and high-accuracy temperature measurement and wireless data transmission are realized.

The present invention provides a self-powered wireless sensor node and system, which relate to the field of wireless sensor technology, wherein the self-powered wireless sensor node comprises: a power generation module for generating electric energy according to spatial variable information; an energy storage module connected to the power generation module, for receiving and storing the electric energy sent by the power generation module; a switch module connected to the wireless sensor node and the energy storage module respectively, for controlling the energy storage module to supply power to the wireless sensor node; the wireless sensor node is wirelessly connected to a master control end, and a corresponding frequency signal generated by a detection amount of a spatial environment is transmitted to the master control end, so that the master control end performs calculation according to the received frequency signal to obtain the detection amount of the wireless sensor node. This scheme realizes self-power supply of the wireless sensor node, overcomes the defects of low resource utilization rate of battery power supply or external energy power supply, and working time is limited by energy supply, and meets the equipment's requirements for lightweight, intelligent, and efficient resource utilization of sensor nodes.

The invention discloses a self-adaptive multi-mode electromagnetic collaborative vibration reduction system for a superconducting maglev train. The self-adaptive multi-mode electromagnetic collaborative vibration reduction system comprises a framework, a superconducting suspension device, a permanent magnet track, an electromagnetic damping coil, a magnetorheological damper, a secondary suspension, a filter, an amplifier and a shunt circuit, the superconducting suspension device is mounted at the bottom of the train body and is rigidly connected with the framework; the permanent magnet track is arranged below a running path of a train; the electromagnetic damping coil is mounted at the bottom in the superconducting suspension device; the magnetorheological damper and the secondary suspension are arranged between the framework and the train body; and the magnetorheological damper, the filter and the amplifier are connected in series with the electromagnetic damping coil through the shunt circuit. By integrating the electromagnetic and magneto-rheological technologies, the system realizes the operation characteristics of self-energy supply and self-adaption, and the dependence on external energy and the operation cost are reduced. Meanwhile, the self-adaptability of the system ensures that the optimal performance can be kept under various operation conditions.

This invention relates to a wind speed and direction measuring device, comprising a mounting assembly, a wind speed measuring assembly, a wind direction measuring assembly, and an energy storage device. The mounting assembly includes a mounting plate and a base located below the mounting plate. Multiple columns are connected between the upper surfaces of the mounting plate and the base. The wind direction measuring assembly is mounted on the mounting plate. The wind speed measuring assembly includes a main shaft. The base has a first cavity. The upper end of the main shaft is rotatably mounted on the mounting plate, and the lower end of the main shaft passes downward through the upper side wall of the base and is rotatably mounted on the bottom side wall of the first cavity. Multiple blades are mounted on the side wall of the main shaft between the mounting plate and the base. Multiple actuating plates are provided on the outer side wall of the main shaft inside the first cavity. Multiple mounting plates are evenly mounted on the peripheral side wall of the first cavity, and piezoelectric elements are mounted on the mounting plates. A first circuit board for measuring wind speed is also installed inside the first cavity, and the first circuit board is electrically connected to some of the piezoelectric elements. This invention enables the wind speed and direction measuring tool to be self-powered, has high stability, and saves costs.

The invention discloses a self-energized closed-loop vibration control device based on a magnetothermal power generation effect, which relates to the technical field of vibration reduction and mainly comprises a magnetic shell, a passive vibration reduction device, a solenoid, a thermoelectric power generation device and an active vibration reduction device, the top of the magnetic shell is used for bearing an object to be subjected to vibration reduction, the magnetic shell can be arranged in the solenoid in a penetrating mode and can move up and down relative to the solenoid under the action of the object to be subjected to vibration reduction so as to generate heat energy, the passive vibration reduction device comprises an elastic piece which is arranged between the magnetic shell and a placement platform of the solenoid, and the elastic piece can be compressed in the vertical direction. The thermoelectric power generation device is connected with the magnetic shell and converts heat energy into electric energy, the active vibration reduction device comprises a driving device which is electrically connected with the thermoelectric power generation device and the magnetic shell, and the driving device can provide force for preventing the movement trend of the magnetic shell. According to the self-powered vibration damper, an external power source is not needed, self-powered can be achieved, the vibration damping effect is improved through combination of active vibration damping and passive vibration damping, and the structure is simple.

The present invention belongs to the technical field of environmental pollution monitoring equipment, and relates to a walking type microplastic grading and collecting device. The present invention comprises a shell, a fixing frame is arranged on the shell, a limiting hole is arranged on the lower side of the shell, a lower slider is slidably arranged in the limiting hole, and a driving mechanism capable of driving the lower slider to slide forward and backward is arranged on the shell; a first fixing cylinder is arranged on the shell, a first mounting ring is connected to the rear end of the first fixing cylinder, a first mounting frame is arranged on the first mounting ring, and a first filter net is arranged on the first mounting frame; a second fixing cylinder is arranged on the second fixing cylinder, the second fixing cylinder is fixedly connected to the lower slider via a second connecting arm, a second mounting ring is connected to the rear end of the second fixing cylinder, a second mounting frame is arranged on the second mounting ring, and a second filter net is arranged on the second mounting frame. The advantages of the present invention are: effectively improving the collection efficiency of microplastics.

The invention discloses a self-powered milk sterilization device and method based on magnetic coupling friction nanometer power generation. The device comprises a friction power generation system and a sterilization system. According to the invention, high-efficiency sterilization and safety adaptation are taken into consideration, and a miniaturized food scene is adapted: on one hand, a synergistic effect of combining electrostatic capture with point discharge electroporation is adopted, the inactivation efficiency on common pathogenic bacteria such as escherichia coli and staphylococcus aureus is greater than or equal to 99%, high-temperature treatment is not needed, and nutrient substances such as lactose and protein in milk can be completely reserved; on the other hand, the device is small in overall size, light in weight, capable of being directly connected into a milk conveying pipeline of a family or a small pasture, easy to operate and low in maintenance cost, meanwhile, all components making contact with milk are made of food-grade materials, leakage is prevented through cooperation with a sealing structure, secondary pollution is avoided, and the food safety standard is met.

The application provides an energy capturing and state self-sensing device, a structural design method and a system. The energy capturing and state self-sensing device is arranged in a floating slab track spring sleeve and is connected in series with a spring. Through collection and conversion of mechanical energy of spring vibration, self-power supply of the system is realized. Meanwhile, the high piezoelectric sensitivity of the piezoelectric ceramic is used to sense the mechanical state of the spring, thereby providing technical support for long-term online monitoring and intelligent operation and maintenance of key parts of the floating slab track.

The present invention belongs to the technical field of life-saving devices, and relates to a life-saving device. The present invention comprises a main body, a connecting belt is provided on the inner side surface of the main body, and the two ends of the connecting belt are detachably connected; a power mechanism capable of driving the main body forward is provided on the main body; a generator is provided in the main body, and the output shaft of the generator is connected to a gear via a transmission mechanism; a telescopic member is provided between the gear and the connecting belt, one end of the telescopic member extends out of the main body and the end is hinged to the connecting belt, and the other end of the telescopic member extends into the main body and is connected to the gear; when the telescopic member extends out of and retracts into the main body, the telescopic member can drive the gear to rotate. The advantage of the present invention is that the self-power supply of the life-saving device is achieved.

The invention discloses a self-powered methanol concentration sensing system of a direct methanol fuel cell, and belongs to the technical field of methanol concentration sensing of fuel cells. The invention aims to solve the problems that the existing methanol concentration sensor cannot realize self-power supply and is high in cost. Comprising a fuel cell voltage detection module, which adopts a shunt resistor to detect a working voltage provided by a fuel cell, and adopts an operational amplifier to obtain an amplified value of the working voltage as a voltage feedback value of the fuel cell; the power supply management module is used for periodically disconnecting the fuel cell from the load based on the working voltage by adopting a maximum power tracking point algorithm, measuring the current open-circuit voltage of the fuel cell, and enabling the fuel cell to work in a maximum power state by adjusting the ratio of the working voltage to the current open-circuit voltage; and the display module is used for converting the voltage feedback value into a current signal, determining the current methanol concentration of the fuel cell based on the current signal, and displaying the current methanol concentration. The method is used for detecting the methanol concentration of the fuel cell.

The application provides a joint module fatigue test method and system for simulating wave force working conditions, and belongs to the technical field of motor performance testing. The method and system aim to solve the problems of existing test working condition simulation distortion and high energy consumption. The system includes wave energy absorption, power generation, energy storage, mechanical energy transmission, load adjustment and clutch, adaptive loading control and closed-loop testing modules. Wave energy is used in two ways, one for power generation to supply energy to the system, and the other for mechanical load conversion. The load adjustment and clutch module precisely adjusts the load and can cut off the load in abnormal conditions. The adaptive loading control module and the closed-loop testing module form a closed loop, dynamically adjust the load according to real-time data, and accurately reproduce random working conditions. The closed-loop testing module synchronously collects fatigue data and electrical, thermal and other performance parameters of the joint module, realizing collaborative testing.

This invention relates to a triboelectric bearing, an in-situ monitoring system for operational status, and a method for manufacturing the same. The triboelectric bearing comprises a bearing body and a semiconductor coating. The bearing body includes a conductive stationary ring, a conductive moving ring, and a conductive roller. The conductive roller is located between the conductive stationary ring and the conductive moving ring. At least one of the conductive stationary ring and the conductive moving ring serves as a substrate. The semiconductor coating is disposed on the substrate. The conductive roller contacts the semiconductor coating to generate a direct current when it moves relative to the semiconductor coating. Alternatively, the conductive roller serves as the substrate, the semiconductor coating is disposed on the substrate, and both the conductive stationary ring and the conductive moving ring contact the semiconductor coating and generate a direct current when they move relative to the semiconductor coating. The triboelectric bearing of this invention not only possesses the mechanical functions of a traditional bearing but also achieves self-powered and in-situ monitoring characteristics, effectively solving problems such as limited sensor installation space, the need for external power supply, and high maintenance costs in bearing monitoring technologies.

This invention discloses a self-powered wireless temperature sensing device and its power supply reliability assessment method. The self-powered wireless temperature sensing device includes a thermoelectric energy harvesting module, an energy management module, and a wireless temperature sensing node. The thermoelectric energy harvesting module converts the waste heat generated by the operation of the high-voltage disconnecting switch into electrical energy. The energy management circuit boosts the output electrical energy and stores the boosted energy using a supercapacitor, thereby achieving self-powering for the high-voltage disconnecting switch wireless temperature sensing device. Simultaneously, a neural network model is trained using the constructed self-powered wireless temperature sensing device to establish a power supply reliability assessment model. This model estimates the remaining charge of the energy storage element in the device under different high-voltage disconnecting switch operating conditions, determines the occurrence time of power failure, and effectively improves the operational reliability of the status monitoring device on the high-voltage disconnecting switch.