174results about How to "Monitoring stability" patented technology

The invention discloses a device for detection of mechanical characteristics and diagnosis of faults of a high-voltage circuit breaker, and relates to a switch device in the technical field of electric power. The device for detection of the mechanical characteristics and diagnosis of the faults of the high-voltage circuit breaker comprises a power module, an AD conversion module, a USB / RS232 communication module, a computer, a signal processing module, a control module, a collection module and a USB / RS232 communication module. The device for detection of the mechanical characteristics and diagnosis of the faults of the high-voltage circuit breaker integrates a plurality of paths of collection signals which comprise a loop current of an energy storage motor of the high-voltage circuit breaker of a spring operating mechanism, a coil current of a switch-on releaser, a coil current of a switch-off releaser, vibration signals of the high-voltage breaker, and information content of the angular displacement and the speed of rotation of a main shaft, local information of the mechanical characteristic state of the high-voltage circuit breaker is obtained by collecting information content with different forms, analysis is carried out on the local information through the signal processing module of the device, and the local information is combined, superposed and deduced to generate judgment information of the mechanical characteristics of the high-voltage circuit breaker. The device for detection of the mechanical characteristics and diagnosis of the faults of the high-voltage circuit breaker is simple in structure, convenient to use and stable in monitoring.

The invention relates to a motion-estimation-based road video stabilization method, which comprises the following steps of: performing nonlinear smooth denoising on an input image; determining a characteristic searching range according to the requirements of a system on accuracy, and acquiring optimal characteristic information; performing cross grayscale projection on a template and a block to be matched, and finding an optimal matched area according to a difference; constructing a dynamic motion model in a recursion way by adopting a Kalman filter with a uniform motion equation, obtaining motion parameters of a camera for describing inter-frame motions caused by the motions of the camera, and identifying and filtering random jitter in an offset sequence obtained by motion estimation; and filling an area losing an image due to the video jitter, and reconstructing adjacent frames by adopting a hybrid Gaussian model and utilizing time relativity between image sequences.

Disclosed is dynamic monitoring method and device of a stress sensitization fiber bragg grating of locking rods of a railway turnout switch machine. A fiber bragg grating strain gauge is tightly fixed between two semi-circular clamping blocks of each locking rod through a screw, the large strain capacity generated by the long distance between the two clamping blocks of each locking rod is applied to the fiber bragg grating for sensitization through a rigid lengthened arm, fiber bragg grating temperature compensation pieces connected in series remove the influence of the environmental temperature, and all the devices are sealed in a protective box. More than 10 turnout locking rods to be detected can be connected to a multi-path channel demodulator through transmission optical fibers, and the turnout locking rods to be detected are demodulated and then input to a data processing terminal for data processing and displaying. When the locking rods of the turnout switch machine work, a system detects the switching force, the intensity and direction of locking force, switching speed, switching time and other data dynamically on line, and compares the data with values stored in the history to obtain whether the turnout switch machine works normally or not, and the result is uploaded to a monitoring department in real time to achieve dynamic on-line monitoring.

The invention discloses an embedded intelligent monitoring and remote maintenance system of a powder forming machine. The embedded intelligent monitoring and remote maintenance system is composed of an on-site monitoring unit and a powder forming machine manufacturer remote maintenance center. A workshop on-site monitoring platform has the function of obtaining the important running state of the powder forming machine through real-time data interaction with a main controller of the powder forming machine and through workshop field data collected through data collection devices such as a sensor, a video collection device and an audio collection device, the function of displaying the real-time running state of the powder forming machine on a display device, the function of alarm prompt and the like. Meanwhile, the on-site monitoring unit can conduct data compression and data classification on state parameters of the powder forming machine and sends data to a remote maintenance center of a device producer and a person in charge of a certain part of the powder forming machine through an Ethernet interface, a GPRS interface and a short message sending module, and therefore online monitoring and remote fault diagnosis of the powder forming machine, and the maintenance service are achieved, and related personnel are notified. The embedded intelligent monitoring and remote maintenance system is low in cost, complete in function, high in configurability and high in tailing capability, functional modules can be increased or reduced according to the on-site running state of the powder forming machine, and the embedded intelligent monitoring and remote maintenance system has high universality.

The invention discloses a device and method for evaluating inhibitor film integrity under scouring work conditions and belongs to the technical field of petrochemical engineering corrosion and protection. The device comprises a supplied flow circulating unit, a shear force measuring unit, an electrochemical monitoring unit, a camera shooting observation unit, a test piece testing unit and an inhibitor injection unit. By means of the device and method, evaluation of integrity of an inhibitor film can be achieved. Firstly, flow shear force is measured through the shear force measuring unit under different scouring work conditions, the corrosion rate is measured through the test piece testing unit, online corrosion monitoring is conducted through the electrochemical monitoring unit, the surface appearance of a test piece is observed and recorded through the camera shooting observation unit, integrity of the inhibitor film is comprehensively evaluated through data comparison and analysis, critical parameters are obtained when integrity of the inhibitor film is damaged, finally an inhibitor is injected through the inhibitor injection unit so that the inhibitor film can be repaired to be complete, and therefore monitoring and evaluation of stability, damage and repair of the inhibitor film are achieved.

The invention provides a remote monitor system immune from individual state of motion, environment and locations. The system comprises an ear-wearing heart-rate monitor module, an individual posture monitor module, an individual positioning module, a data acquisition mobile terminal, a background server and a client. The ear-wearing heart-rate monitor module, the individual posture monitor module, the individual positioning module are all connected to the data acquisition mobile terminal. The data acquisition mobile terminal, the background server and the client are connected in sequence. The remote monitor system immune from individual state of motion, environment and locations can monitor physical signs of staff for special services in the course of executing special missions and directly transmit monitor information to a command center.

The invention provides a power battery state of health on-line monitoring method. Based on the common charging voltage interval of the power battery, a charging energy value is extracted to be used as the health indicator of the battery. Under each temperature condition, only one group of offline battery aging data is required to establish a relation between the charging energy value and the battery state of health. Required complicated calculation is the offline non-linear fitting of the relation between the charging energy value and the state of health, and a fitting model can be directly used in an online way.

The invention discloses a method and device of monitoring the height of corn plants in a wild environment based on an embedded type technology and a GPRS (General Packet Radio Service) wireless transmission technology, and belongs to the field of embedded type image processing and wild crop growth remote wireless monitoring. The invention comprises a device part and a method part. A data collection module of the device part utilizes a binocular stereoscopic vision principle; a data processing and transmitting module mainly utilizes the embedded type technology and the GPRS wireless transmission technology; and an independent power supply module mainly utilizes a photovoltaic power generation system to independently supply power to the whole device and the difficulty that no power grid exists in the wild environment is overcome. An embedded type image processing module of the method part can be used for eliminating the influences of wind power factors in the wild environment on corn plant images to the greatest extent; and a mobile terminal can be used for sending a wireless instruction through a GPRS wireless communication system, effectively and remotely controlling a whole data collecting and processing device to obtain a needed corn plant growth condition and performing the corresponding judgment and decision in time.

The invention relates to a comprehensive tripping monitoring operating system comprising a touch screen industrial computer and a PLC (Programmable Logic Controller) as a control system and a computing processing system. An acquisition system is formed by various sensors, and an executive operating system is formed by various controllers. The comprehensive tripping monitoring operating system is characterized in that an integrated intelligent program design is adopted and combined with qualitative analysis and quantitative analysis to integrally and comprehensively solve the problems of well kick and well leakage monitoring, single upright post timing counting, intelligent grouting and prevention of a runner wagon from knocking an upper overhead travelling crane and smashing a lower platform in the tripping process.

A mobile device including a biosensor for obtaining biological signals in which biological information can be obtained stably while the mobile device is being held with a hand and is used, without providing a sensor specially used for detecting body motion generated by operating the mobile device.

The invention discloses a device for monitoring the leading phase operation stability of a generator and a working method thereof. The device comprises a Beidou satellite system module, a power angle measuring module, a parameter recognizing module, an interface converter module, a display module, and the like. The method comprises the following steps of: firstly, receiving a clock signal emittedby the Beidou satellite system and acquiring current reliable parameter time; recognizing system interconnection impedance; solving the leading phase capacity of each unit by the voltage target valueand the practical measuring value of an electric power plant, comparing the leading phase capacity of each unit with practically-measured passive power, measuring a difference value by the power angle measuring module and controlling excitation action; calculating a power angle of the generator by utilizing an exciting current and further acquiring a power angle of the generator to the system; and calculating the static stability margin of the current leading phase operation, monitoring the stability of the system and outputting an adjustment signal, a fault signal, and the like by the interface converter module. If the limit value of the generator is out of limit, the passive power of a corresponding unit is immediately regulated until in a suitable range. The invention is safe and reliable and has higher relative accuracy and convenience in practical application.

The invention discloses a violent earthquake gestation and imminent earthquake sound monitoring probe and a circuit module structure. The probe structure is directly coupled with a base rock through a taper microphone head and conducts an earthquake sound to a sound transmission rod which is directly connected with the probe structure. A band-shape piezoelectric film sensor which is pasted on a surface of the sound transmission rod converts an earthquake sound signal into an electrical signal. The sound transmission rod, a band-shape piezoelectric film sensor group and a processing circuit are packaged through using a glue, and are fixed and protected. Besides, a probe circuit module structure carries out backup on the captured earthquake sound signal from three hierarchies of a sensor unit, the processing circuit and a transmission process so that reliability of a whole circuit system is increased. The sensor adopts the piezoelectric film sensor. There are the advantages that sensitivity is high; a dynamic scope is large and a frequency response scope is large too. By using the above technical scheme, the probes can be densely arranged in the base rocks which are under 150 meters to 200 meters of an earthquake-prone belt in a large scale so that violent-earthquake imminent earthquake sound monitoring work can be performed reliably for a long time and with low cost.

The invention discloses an ultraviolet-ray intelligent monitoring oil-spilling alarm system comprising a monitoring center and an oil-spilling detection terminal. The oil-spilling detection terminal is in communication connection with the monitoring center and transmits detected information to the monitoring center; an electronic chart display system is arranged at the monitoring center; and the oil-spilling detection terminal is displayed on the electronic chart display system correspondingly. According to the invention, the oil-spilling detection terminal is displayed on the electronic chart display system correspondingly; and on the basis of the electronic chart of the monitoring center, a monitoring worker can inquire monitoring situations of all monitoring points at any time. Once an oil-spilling situation occurs at a monitoring area and the oil-spilling thickness exceeds a set thickness, an audible-visual annunciator installed at the field can carry out alarming immediately to warn the monitoring worker to carry out corresponding operation and thus the monitoring efficiency of the oil spilling at the water surface can be improved.

The invention relates to a continuous online CO2 monitoring system and method for underground fluids. The continuous online CO2 monitoring system comprises a gas inlet, a first solenoid valve, a dehumidification restorable pipe, a second solenoid valve, an array type infrared CO2 sensor, a third solenoid valve, an electromagnetic pump, a fourth solenoid valve and a gas outlet which are connected sequentially through a pipeline, wherein one end of a drying and filtering pipe is connected with the second solenoid valve through the pipeline, and the other end of the drying and filtering pipe is connected with the fourth solenoid valve through the pipeline; the dehumidification restorable pipe, the array type infrared CO2 sensor, the electromagnetic pump and the four solenoid valves are electrically connected with a master control unit respectively. The monitoring method comprises the following steps: the master control unit controls a communication channel of the four solenoid valves, and a monitoring gas channel, a cleaning gas channel and a dehumidification restoring channel are formed. With adoption of the monitoring system and method, wide-range continuous monitoring of CO2 concentration in a high-humidity environment is realized, various filter and compensation means are adopted, the anti-interference performance is good, errors are reduced effectively, the monitoring precision is high, the stability is good, and effectiveness of earthquake prediction is improved.

The invention relates to an intelligence detecting and controlling device and a detecting and controlling method of an accumulator belonging to the detecting, controlling, and adjusting device technology field. The device comprises a casing body, a liquid level sensor, and a voltage connecting piece. The lower portion of the casing body is provided with a location base which is connected with a measured accumulator. The inner portion of the casing body comprises a control circuit board and a stepper motor for lifting a float, and sensor components comprise a density sensor and a temperature sensor. The control circuit board comprises a signal conditioner, a micro processor, a CAN communication isolating circuit, a drive circuit, and a boosted circuit. The density sensor is connected with the micro processor through the signal conditioner, and the stepper motor is connected with the micro processor through the drive circuit. The invention has the advantages of simple structure, which can lead the acid solution density, temperature, and the detecting and controlling of liquid level of a lead-acid accumulator to have continuous on-line proceed, and the invention has the function of self-diagnosis and on-line calibration, and the operation is stable and reliable. The detecting and controlling method comprises, connecting with equipment, assuring the parameter range, calibrating parameter values, and assuring or returning. The process has the advantages that continuous on-line self-diagnosis and on-line calibration method is simple and direct, fast, and accurate, and work efficiency is high.

The invention discloses an intelligent long scale distance strain sensor and a manufacturing method thereof. The intelligent long scale distance strain sensor comprises a sensing core and an intelligent module, wherein one end of the sensing core is connected with the intelligent module; the sensing core is composed of resistance wires and a reinforcement layer wrapping the resistance wires, and the reinforcement layer can be made of fiber reinforced composite material; a sleeve is arranged on the outer periphery of the reinforcement layer, a packaging layer is arranged on the outer periphery of the sleeve, and the packaging layer can be made of woven fiber composite material; the two ends of the packaging layer are respectively provided with a packaging anchoring point; the intelligent module is composed of a data acquisition chip and a wireless sensor. Compared with the prior art, the intelligent long scale distance strain sensor has the advantages that measuring performance and monitoring accuracy are improved and increased greatly, corrosion resistance and durability are enhanced, the measurement range is enlarged, intelligent data acquisition and transmission are achieved, and detection cost is low.

The invention discloses a karst collapse water vapor pressure remote monitoring system. The system comprises an observation well, a sensor monitoring module, a solar energy power supply module, a data acquisition and transmission module and a client. The sensor monitoring module comprises a hole water pressure sensor and a gas pressure sensor. The solar energy power supply module comprises a solar panel, a solar cell controller and a storage battery. The data acquisition and transmission module comprises a microcomputer time control switch, a GPRS wireless communication module and a data acquisition instrument. The client allows a user to check real-time data and historical data in an online mode and allows the user to remotely set a karst water vapor power monitoring density according to a need. By using the karst water vapor power monitoring system and the method, changes of water vapor pressure in a karst cavity can be continuously, stably and remotely monitored in a long-term mode, a karst collapse geological disaster mechanism is researched and purposes of karst collapse monitoring and early warning are reached.

The invention provides a three-electrode solid electrolyte electrochemical reactor, which comprises a membrane electrode assembly, a flow field plate, a sealing gasket and a reference electrode, wherein the membrane electrode assembly comprises an active area and an inactive area capable of generating electrochemical reaction; the inactive area is located on the periphery of the active area; the inactive area is an exposed area of a solid electrolyte membrane; the flow field plate comprises a cathode flow field plate and an anode flow field plate; the membrane electrode assembly is clamped between the cathode flow field plate and the anode flow field plate; the sealing gasket is arranged between the membrane electrode assembly and the flow field plate and is located in the inactive area of the membrane electrode assembly; an access point of the reference electrode is arranged outside the sealing gasket; and ion connection is kept with the inactive area through an electrolyte solution or under an assist of the solid electrolyte membrane. The electrochemical reactor provided by the invention can start or cancel monitoring by the reference electrode at any time, does not affect the working states of an anode and a cathode and does not affect the structure and the air-tightness of the reactor.

The invention discloses a fixed point wavelength modulation gas concentration measurement device based on wave number drift correction, and further discloses a fixed point wavelength modulation gas concentration measurement method based on wave number drift correction. According to the invention, by monitoring wave number correction gas concentration of a light emergent center of a laser in real time, bad influence of drift of the light emergent center on measurement in the long-term operation of the laser is overcome, and accurate measurement of calibration-free fixed point wavelength modulation is implemented; the method disclosed by the invention does not require an additional reference gas pool for calibrating gas concentration and is more beneficial to field severe environment measurement; in addition, a harmonic signal adopted by the method disclosed by the invention is narrow in spectrum occupied range, so as to benefit to multispectrum coupling measurement and facilitate implementing simultaneous online measurement on gas concentration of multiple components; and meanwhile, the method disclosed by the invention utilizes a line width obtained by measurement to participate incalculation on the gas concentration without utilizing excessive parameters in a spectral database, thereby eliminating influence of indeterminacy of spectrum parameters and component concentration.

The invention relates to an electronic gauge for automatically detecting vehicle sunroof assembly glass. The electronic gauge comprises a computer, a foot valve, a cast-aluminum base plate, a centering mechanism mounted on the cast-aluminum base plate, a clamping and positioning block, a sliding plate mechanism, a buffer, a limiting block and an electronic sensor. The foot valve controls to-be-detected vehicle sunroof assembly glass to be put into the centering mechanism and the sliding plate mechanism after loosening of the centering mechanism and the sliding plate mechanism, and controls closing of the centering mechanism which is then clamped and limited by the clamping and positioning block; the sliding plate mechanism slowly approaches the limiting block through the buffer under the drive of an air cylinder to complete positioning; the electronic sensor senses fitting degree and product dimension of the outer surface of the vehicle sunroof assembly glass through contact, and transmits signals to the computer to output results. By the electronic gauge, all outer surface positions in need of measurement can be entirely measured at one step, the problem that the outer surface positions need to be measured one by one when a simulation block is used is solved, detection efficiency is greatly improved, and better and more stable monitoring products are realized.

The invention relates to a method and a device for diagnosing defects of laser additive manufacturing, in order to overcome the defect of flaw diagnosis during the process of laser additive manufacturing. The method specifically comprises the following steps: (1) utilizing a spectrum sensing information collecting device to collect spectrum information, thereby acquiring a time domain map of spectral line intensity fluctuating following time; (2) utilizing a visual sensing information collecting device to collect visual information, thereby acquiring a time domain map of molten pool area changing following time; (3) performing manufacturing defect analysis on the time domain maps acquired in steps (1) and (2); (4) unifying a time shaft and performing mid-value or mean filtering treatment on the time domain map acquired in the step (3), and normalizing the treated data; (5) utilizing a weighted average algorithm to perform information fusion and performing filtering treatment, thereby acquiring a weighted average result time domain map after filtering. The method provided by the invention can be widely applied to the field of diagnosis for the defects of laser additive manufacturing.

The invention relates to the technical field of unmanned aerial vehicles, and particularly relates to an unmanned aerial vehicle homeward voyage monitoring method based on an intelligent lamp post anda control center. When a flight electric quantity change curve is analyzed and the flight attitude is adjusted, the residual electric quantity change data and the flight environment monitoring data can be considered at the same time, time delay or adjustment deviation of flight attitude adjustment caused by only considering one of the residual electric quantity change data and the flight environment monitoring data is avoided. It can be understood that the residual electric quantity change data is on the side of the to-be-monitored unmanned aerial vehicle, and the flight environment monitoring data is on the side of the target intelligent lamp post. Real-time flight attitude adjustment can be performed based on the residual electric quantity change data and the flight environment monitoring data, so that real-time and stable monitoring of homeward voyage monitoring of the unmanned aerial vehicle can be realized in combination with the environmental factors and the electric quantity loss, safe homeward voyage of the unmanned aerial vehicle can be ensured and flight accidents can be avoided.

The invention discloses a quality monitoring device for a coverage stretch system and a wireless network and a monitoring method thereof, belonging to the technical field of mobile communication network quality monitoring technology. The monitoring device comprises a CPU module, a storage unit, an MODEM module, a radio frequency unit, an antenna unit and a power management unit. The monitoring method comprises the following steps: the monitoring device acquires and analyzes parameters of the coverage stretch system or the wireless communication network; the CPU module packages the monitored parameters, stores and interact the packets; and the packaging content is transmitted to a monitoring platform. The quality monitoring device for the coverage stretch system and the wireless network and the monitoring method thereof strengthen monitoring force for the quality of the coverage stretch system and the wireless network, improve working efficiency of supervisors and have accurate and stable monitoring.

The invention discloses a circuit breaker fault detection device and multiple data fusion fault detection methods, and relates to the technical field of the model classification analysis. The detection device comprises a central processing unit and a connected power supply, a RTC timer, a reset circuit, a SRAM, an EEPROM, a switching value input interface, an alarm circuit, a RS485 interface, a RS232 interface, a JTAG, a displacement sensor, a vacuum transmitter, an analog-to-digital converter, a voice module and an acceleration sensor. The circuit breaker fault detection method integrating with the mechanical features, the voice, the vacuum degree, the vibration signal and like methods is proposed, the circuit breaker mechanical feature parameter, the voice information feature parameter,the vacuum degree parameter, and the vibration signal feature quantity are combined to obtain the multi-feature quantity parameter which is identified, the mechanical states of the circuit breaker canbe reflected more accurately and comprehensively.

The invention relates to a disaster monitoring method for a coal mine tunnel roof. The method includes the steps that before monitoring, stability of tunnel surrounding rock is estimated, a surrounding rock risk type monitoring area is determined according to an estimation result of the stability of the surrounding rock, then a serious disaster area of the tunnel roof is determined, and monitoring instruments are only arranged in the serious disaster area of the tunnel roof and used for monitoring. According to the disaster monitoring method for the coal mine tunnel roof, only the serious disaster area of the tunnel roof is monitored, so that manpower, material resource and financial resource investment in monitoring by a coal mine enterprise is greatly saved, and production cost is reduced.

The invention discloses a non-dispersive infrared light gas detection system adopting an electric pulse infrared light modulation method, so as to reduce power consumption at the part where infrared light is modulated, and stability is improved; an internal coating method is adopted in structural design of a gas chamber, so that infrared light diffusion and external disturbance are reduced further, and gas detection accuracy is improved; a calibrating circuit is used for signal processing, so that different collected gas can be detected accurately through calibration; a programmable logic device is adopted to calibrate different environmental factors in air through software collection, the functions of data teletransmission, abnormity warning and the like are achieved through FPGA treatment, thereby improving module detection precision, timeliness and stability and reducing system cost simultaneously. The non-dispersive gas detection system disclosed by the invention has the advantages that the system is small in volume and low in power consumption, continuity and timeliness of gas detection can be achieved, and the detection precision is improved greatly.

The invention relates to a self-powered rotating device state monitoring device, and mainly solves the problem existing in the prior art that a power supply cable laying workload is large, construction is tedious, a battery is short in power supply endurance. The self-powered rotating device state monitoring device is composed of an electric energy generation unit (3), a monitoring unit (4), a temperature and vibration integrated sensor (5), and relevant power lines and signal transmission lines. The electric energy generation unit (3) is composed of a power generation module, a rectificationand filtering module and a stator winding center height adjusting mechanism. Power generation is achieved through rotation of motor driving end shaft and a electromagnetic induction principle, and thepower is converted into stable dc voltage by the rectification and filtering module, and then power is supplied to the monitoring unit (4), the technical scheme well solves the problem, and the self-powered rotating device state monitoring device can be applied to rotating device state monitoring.

The invention discloses a detection method for a cargo carrying state of a vehicle, aiming at solving the problem that the detection of the cargo carrying state of the vehicle is not accurate, caused by cargo carrying changes in a vehicle operation process. The detection method comprises the specific following steps: initializing idle load; judging that the vehicle is in a full-load, idle-load or unloaded state according to an output signal of a sensor; and finally, sending the cargo carrying state of the vehicle to an Internet of Vehicles platform through a vehicle-mounted terminal. According to the detection method, stable monitoring of changes of a loading state of the vehicle is realized under the conditions that an arrangement space of the whole vehicle is limited and the cost of the whole vehicle is not changed.

The invention discloses a system for improving TSV etching process and an etching endpoint monitoring method. A gas monitoring device is arranged outside a plasma reaction cavity, and the gas monitoring device is connected with a radio-frequency power source and an endpoint monitoring device, thereby realizing monitoring of the etching step and the depositing step of deep reaction plasma etching. The gas monitoring device determines the reaction gas on the surface of a substrate is an etching gas or a deposition gas by carrying out real-time monitoring on the spectrum emitted from the plasma on the surface of the substrate, and sends the results to the radio-frequency power source and the endpoint monitoring device so as to indicate the radio-frequency power source to output power matched with the gas, and meanwhile, to indicate the endpoint monitoring device to select some step to collect special-wavelength real-time light signal strength and establish a periodic real-time light signal strength spectral line, and the endpoint of the plasma processing process can be determined according to the light signal strength feature spectral line.

The invention relates to an elasticity intelligent-adjustment watchband. The elasticity intelligent-adjustment watchband of the present invention comprises a band body and an adjusting device, and theadjusting device comprises a fixing plate and an adjusting cavity arranged in parallel, the fixing plate and the adjusting cavity are connected by a telescopic belt; and a telescopic tube is disposedbetween the fixing plate and the adjusting cavity, and one end of the telescopic tube is fixedly connected with an adjusting tube at the adjusting cavity; a regulating piston plate is slidably disposed in the adjusting cavity; a pressure-sensing control cavity made of a hollow elastic material is disposed st the adjusting device, and the pressure-sensing control chamber and the adjusting tube arecommunicated by a rigid sliding cylinder; a sealing piston plate is slidably disposed in the rigid sliding cylinder, and the sealing piston plate is connected to a current-limiting slider through a connecting rod, and the regulating cavity, the telescopic tube and the pressure-sensing control cavity are filled with adjusting liquid. The watchband can intelligently adjust the elasticity of the watchband to ensure the effective fit of a smart product and the skin, and provides users with sufficient comfort level.