37results about How to "Realize sound and light alarm" patented technology

The invention relates to a remote monitoring system which comprises a client-side and a server-side. According to the client-side, a video acquisition module is connected with a video monitoring module; a storage module is connected with the video monitoring module and a first transmission module; a lockset control module is connected with a fingerprint management module and the first transmission module; an alarm module is connected with the first transmission module, a fault and vibration monitoring module and an anti-crash self-checking circuit module; a master control module is connected with a clock circuit module, a linkage extension module and the first transmission module. According to the server-side, a second transmission module is connected with a view display module, a fault warning module, a fingerprint management module and a geographic module; a real-time monitoring module is connected with a video monitoring module and the view display module; an information output module is connected with the view display module, a geographic positioning module, a level-to-level management module, an authority management module, a task management module, a statistic analysis module, an approval module and a topology management module; a remote control module is connected with the information output module and a log management module.

The invention provides a stamping processing online visual inspection device and a stamping processing online visual inspection method. The device comprises a conveying mechanism, a position detection part, an image acquiring assembly, a central processing module, a control unit, a sound-light alarm part and a working table, wherein a visual inspection area of a material strip to be stamped is arranged on the table top of the working table. The non-contact detection method is adopted, the detection efficiency is very high and the online, timely and automatic detection demands can be met.

The invention relates to a fetal heart rate detection method based on a PC, which comprises the following steps: a fetal heart probe is connected to the PC; an excitation circuit generates a signal, and the signal is transmitted to the belly of a pregnant woman by the transmitting end of an ultrasonic transducer, and then input to an analog multiplier as a carrier; the receiving end of the ultrasonic transducer receives reflected waves, converts the reflected waves into an electric signal and inputs the electric signal to the analog multiplier; the analog multiplier demodulates the signal, the output differential electric signal is processed by an amplifying circuit and a filter circuit, and a singlechip carries out AD sampling; the PC sends out an acquisition start command, and the singlechip transmits the processed signal to the PC; and the fetal heart probe resets after stopping acquisition. The invention adopts an integrated fetal heart probe and solves the problem of on-line working between the fetal cardiotachometer and the PC. The invention can record, store, display and print the fetal heart rate in real time, and can also have the functions of automatic alarming and forgery prevention.

The invention discloses an SAW temperature measurement system for a switch cabinet. The SAW temperature measurement system structurally comprises SAW temperature sensors 1, an SAW receiving and transmitting antenna 7, a feeder line 9 and a controller. The SAW temperature measurement system has the advantages that the purposes of high-voltage isolation, sensor power supply, wiring isolation and the like are achieved; the small SAW temperature sensors are directly arranged at heating points, the real-time temperature of each contact is directly displayed on the controller, setting and search of various perimeters can be carried out, and the small SAW temperature sensors are extremely high in safety, stable and reliable in performance and small in size, are directly installed on the plum-blossom-shaped contacts in the switch cabinet to achieve real-time monitoring of the temperature of the heating points, carry out wireless data transmission with the controller and can be conveniently and flexibly installed without being influenced by the structure or the space of the switch cabinet. Contact fingers closely attached to the plum-blossom-shaped contacts are adopted in a fixture, and therefore the fixture can work on high-voltage, high-current, high-magnetic-field, flammable and combustible, corrosive and dusty application occasions and other poor application occasions to carry out temperature measurement; the SAW temperature measurement system supports open communication interfaces and easily-realized system integration.

The invention relates to a stress concentration and fatigue damage detector based on characteristic magnetic conductivity, which comprises an excitation coil, a detection coil, a power amplification circuit, a low noise signal amplification circuit, a data acquisition analog-to-digital conversion circuit, a DSP (Digital Signal Processor) control and signal module, a display module circuit and the like, and is characterized in that: the excitation coil is connected with the power amplification circuit; the detection coil is connected with the low noise signal amplification circuit; the DSP control and signal module is connected with an ARM module through an HPI (High Power Inhibit) circuit bus interface; and the ARM module is connected with the display module circuit. The stress concentration and fatigue damage detector based on the characteristic magnetic conductivity has the technical characteristics of: (1) high detection accuracy: only a signal conditioning circuit in the instrument is realized by adopting an analog circuit, and other circuits in the instrument are realized by adopting digital circuits for carrying out digital signal processing and control; (2) high integration and dual cores: adopting an embedded instrument design concept, and using dual-core mode with ARM control and DSP operation; and (3) simplicity and convenience in use: the detector has a small size, does not need to depend on a PC (Personal Computer) in a detection process, can be used for completing display and data storage of a detection signal independently, and is convenient for carry and various outdoor detection operations.

The invention discloses a passenger car dead zone auxiliary monitoring system and method. The passenger car dead zone auxiliary monitoring system comprises a six-channel camera, a monitoring and processing unit, a vehicle-mounted computer ECU, a 360-degree panoramic looking around system, a display screen and a central warning processor, the six-channel camera is used for collecting image information, and the six-channel camera is connected with the monitoring and processing unit. According to the dead zone auxiliary monitoring system, omni-directional dead-zone-free monitoring video can be carried out on the outside of a vehicle, a combined picture of the display screen of the vehicle shifts functions automatically, a driver can be enabled to obtain dead zone image information more directly, the front secondary dead zone safety risk brought by wide-angle turning of the driver is avoided, and meanwhile, the fatigue strength caused by the driver frequently turning to watch a plurality of rearview mirrors and thinking behaviors is reduced. According to the passenger car dead zone auxiliary monitoring system and method, monitoring video is carried out on the outside of the vehicle inan omni-directional dead-zone-free mode through the combined monitoring of the 360-degree panoramic looking around system and the six-channel camera, and complex movements such as turning and turningaround from right front / left front areas of rear wheels to the front 5-10 meters of a vehicle head can be solved.

The invention discloses an active air-cooling heat dissipation battery box for a hybrid electric vehicle. The active air-cooling heat dissipation battery box comprises a battery box, wherein the battery box is of a trapezoid structure; two round air inlets which are distributed on the left and right are arranged in the top part of the battery box; rectangular air outlets which are distributed on the left and right are arranged in the bottom part; battery packs arranged in a fan shape are arranged in the battery box; a temperature monitoring and early warning module is arranged at the left side in the battery box; heat dissipation air flues are arranged between the longitudinally arranged battery packs; temperature sensors are arranged in the battery packs at eight corners of the battery box respectively; and a heat dissipation fan and ventilating dustproof and waterproof cotton are arranged in each air inlet. The active air-cooling heat dissipation battery box has the advantages that, with an automatic control technology as a core, a virtual instrument technology, a sensor technology and an electrical control technology are integrated; and efficient use of a battery box heat dissipation system for the hybrid electric vehicle is achieved, so that the battery box heat dissipation system is safer, more reliable and more efficient.

The invention relates to an acousto-optic earthquake warning device, which comprises a casing and a controller, wherein the controller is provided with a circuit board, and a trumpet, a direct current power supply, a lighting lamp, a power switch and a detecting switch which are electrically connected with the circuit board, the circuit board, the trumpet and the direct current power supply are arranged in the casing, the lighting lamp and the power switch are arranged on the side board of the casing, the detecting switch can control the circuit board to realize the acousto-optic warning, and the detecting switch is arranged in the casing, and comprises a piezoelectric ceramic sheet which is laminated by a silver layer, a ceramic layer and a copper sheet layer, wherein the other side surface of the copper sheet layer is vertically connected with a batten bar, and the other end of the batten bar is penetrated out of the casing. The detecting switch further comprises a glass mercury conductive switch. The acousto-optic earthquake warning device of the invention has reasonable structure, convenient use and installation and stable performance.

The invention discloses a radial flow valve element underground pressure regulating device. The radial flow valve element underground pressure regulating device comprises a diffusion tower and a pressure regulating device arranged underground. A base of the diffusion tower is buried underground, an integrated electronic instrument box is arranged at the overground position of the diffusion tower, and a pressure recorder and pressure sensors are mounted in the integrated electronic instrument box. The pressure regulating device comprises a pressure regulating valve body, a pressure regulating instrument box and a box cover, the pressure regulating valve body is arranged on the lower portion of the pressure regulating instrument box, and the pressure regulating instrument box comprises a connecting bottom disc, an inlet pressure meter, a differential pressure gauge, a director, a diffusion valve, a stop valve drive device, a drain valve and an outlet pressure meter, wherein the inlet pressure meter, the differential pressure gauge, the director, the diffusion valve, the stop valve drive device, the drain valve and the outlet pressure meter are mounted on the connecting bottom disc. The pressure regulating valve body comprises a pressure regulating valve element, an inlet valve, an inlet pipe, an outlet pipe and an outlet valve. The radial flow valve element underground pressure regulating device aims at achieving the purposes of being compact in structure, safe and reliable, has the functions of gas filtering, overpressure diffusion, overpressure cutting off and pressure regulating, can also achieve data external display and remote transmission, and overcomes the defect that an underground pressure regulating device is inconvenient to patrol.

The invention relates to a method for detecting the movement of a novel aramid conveyor belt finger-type connector by X rays and belongs to the technical field of aramid conveyor belts. The detectionmethod comprises two parts including an aramid conveyor belt connector region metal configuration structure and an X-ray part; a lead block and a fine steel wire rope are embedded into an aramid conveyor belt finger-type connector part; in a running process of the conveyor belt, when a conveying type separated X-ray metal detector detects that the aramid conveyor belt is subjected to a tension force, relative displacement movement or damages are generated between an inner finger type of the connector and a relative point of the connector. According to the method provided by the invention, equipment is remotely operated and an operator can carry out operation of switching on and off a power supply, switching on and off rays, acquiring an image, monitoring an equipment state and the like ata place far away from an equipment mounting position; all work of equipment operation and state monitoring can be finished when the operator is not on the scene, so that a running position and a running state of the aramid conveyor belt connector are displayed on a computer screen in real time; if abnormal and connector movement conditions occur, the conditions are identified and a user can conveniently and pertinently repair.

The invention discloses a combined ticket checking machine which comprises a magnetic ticket system, a ray detector and a control system, wherein the control system is respectively connected with the magnetic ticket system and the ray detector, and the magnetic ticket system and the ray detector transmit signals to the control system so as to control the opening and closing of a flap door. The invention provides a combined ticket checking machine which can achieve a ticket checking function, and can also realize the detection on prohibited radioactive goods.

The invention relates to a flame temperature detection circuit for household gas cooker intelligent controller, comprising a single-chip microcomputer, an amplifying circuit, an adding circuit, a thermocouple temperature sensor, a reference voltage source circuit, which is characterized in that: the thermocouple temperature sensor and the reference voltage circuit are both connected with the adding circuit; the adding circuit is connected with the operational amplifier and the operational amplifier is connected with the single-chip microcomputer with an A / D converter. At present, certain potential safety hazards exist in the gas cooker in prior use . The flame temperature is detected by the thermocouple temperature sensor of the invention; the negative electrical potential and voltage signal brought by the flame temperature is superposed by the reference voltage, and then is amplified through the operational amplifier, and at last is transported to the A / D converting channel; the single-chip microcomputer estimates whether the cooker has extinguished through detecting the AD converting value; if the cooker has extinguished, the alarm signal is output and the gas inlet valve of the cooker is closed automatically to greatly improve the safety of the cooker.

The invention relates to the technical field of an electric short-circuit protection device, in particular to a multifunctional fireproof short-circuit protector with a redundant device. The multifunctional fireproof short-circuit protector comprises a switch power supply, a current sampling device, a digital signal processor, a large-current power module, an isolation driving module, a redundant device, a charge absorption circuit and a load; the redundant device is a controlled mechanical switch, and an end L of an alternating-current power 220V is respectively connected with a resistor R1, the input end of the switch power supply, the input end of a differential amplifier and one end of the current sampling device. The multifunctional fireproof short-circuit protector is used in different alternating-current strong current fields such as household power, industrial power and the like, when the load is short-circuited, the abnormal power supply circuit is disconnected instantaneously at a microsecond speed, and no dangerous spark is produced on the short-circuit position; when the abnormal situation such as electric leakage happens in an electrical loop, the electric-leakage circuit is also disconnected at a high speed by the device; through the redundant device, even when the extreme situation that the large-power current module or the digital signal processor is abnormal occurs, the reliability of the device also can be guaranteed.

The invention relates to an intelligent anti-falling walking stick capable of giving out an alarm. The walking stick comprises a stick rod and a stick head. The stick rod comprises a telescopic stick rod body and a fixed stick rod body. The stick head is connected with one end of the stick rod. An alarm lamp lampshade is arranged between the stick head and the stick rod. The surface of the stick head is provided with a push button switch, a handheld area, an MP3 play key, a charging display lamp hole, a charging interface and an SD card slot. A loudspeaker is arranged at one end of the stick head, and an illumination lampshade is arranged at the other end of the stick head. A control circuit board, a buzzer, a contact elastic piece and a battery are arranged in the stick head. The control circuit board is provided with a control chip, an A / D converter, an MP3 module, a gravity sensor, an SD card slot, a charging display lamp, a charging slot and an alarm lamp. The intelligent anti-falling walking stick is diversified in function, reasonable in structural design, and capable of giving out an alarm when the walking stick falls and greatly improving entertainment of the walking stick and safety of users.

The invention provides a novel mechanical carrier for a warehouse based on a weighing device. The novel mechanical carrier comprises handrails, an installation plate, a weighing device, a bottom plate, roller wheels, sensors, a weighing plate, a universal bracket and a fixed bracket, wherein the handrails are arranged on the upper part of the right side of the bottom plate; the installation plate is fixed between the handrails; the weighing device is arranged in the middle of the installation plate; the roller wheels are respectively arranged on the bottom of the universal bracket or the fixed bracket; the sensors are respectively fixed on the four corners of the lower part of the weighing plate; the universal bracket is arranged at the right side of the lower part of the bottom plate; the fixed bracket is arranged at the left side of the lower part of the bottom plate. A display screen, a control chip, an alarm indicating lamp, a buzzer and the sensors of the weighing device are arranged for visually displaying the weight of carried objects, so that the audible and visual alarm is realized, damages of overload to the carrier are avoided, the service life of the carrier is prolonged, the production cost is lowered and the working efficiency is improved.

The invention discloses a driver off-seat vehicle alarm system in a drivable mode. Whether an electric vehicle and a plug-in hybrid power vehicle are in the drivable mode or not is judged through a whole vehicle controller; and whether a driver leaves or not is judged through a seat pressure sensor, sound sensation reminding is performed through a buzzer in a cab, and an external danger warning lamp of a vehicle is controlled through a flash relay and a left-right steering control relay to carry out light sensation reminding. The design is reasonable in circuit structure design, comprehensivein alarm range, high in safety and reliability, and strong in anti-interference capability.

The invention provides a five-axis motion automatic-aiming fire extinguishing agent protection system and a work method thereof. The five-axis motion automatic-aiming fire extinguishing agent protection system comprise a fire extinguishing mechanism and a control mechanism which are connected. The fire extinguishing mechanism comprises a machine seat, a spray pipe, a spray nozzle, an infrared thermal imaging sensor, a spherical camera, a fixing base and a moving assembly. The spray pipe is installed on the machine seat. The outlet end of the spray pipe is provided with the spray nozzle, and the spray nozzle faces a protected area. The infrared thermal imaging sensor and the spherical sensor are installed on the two sides of the machine seat correspondingly. The fixing base is arranged on the upper side of the machine seat and fixed to machine seat through fixing bolts. The machine seat moves through the moving assembly. By the adoption of the five-axis motion automatic-aiming fire extinguishing agent protection system and the work method thereof, relevant information of all the places in a large-sized warehouse is monitored, sound-light alarm and automatic fire extinguishment are achieved, the occurrence rate of a fire is lowered, and the life and property safety of the people is guaranteed.

The invention discloses an electric leakage warning system and warning method for a ground water-logging area. The electric leakage warning system comprises a warning device, the warning device comprises an external shell body, the bottom of the external shell body is provided with a detection pole, one side of the external shell body is further connected with a detection line, the detection linecomprises a free end away from the external shell body and a connection end penetrating into the external shell body, the connection end is electrically connected with a control unit located at the upper end of the inner portion of the external shell body, except the free end, the outer portion of a metal guide line connected between the free end and the connection end is provided with an insulating layer, the detection pole is electrically connected with the control unit at the upper end of the inner portion of the external shell body through the guide line, and the control unit is also connected with an audible and visual alarm. According to the electric leakage warning system and warning method for the ground water-logging area, sound and light alarming is adopted for the electric leakage of the water-logging area to achieve a waning function, a protective barrier is added for a traditional electric leakage protective system, therefore, the electric leakage warning system and warning method for the ground water-logging area have a larger application field and prospect.

The invention discloses a security monitoring system of a computer room. A temperature and humidity sensor, a water immersion sensor, a wire temperature sensor and an IO interface module are connectedwith an environmental monitoring device; the environmental monitoring device is connected with an environmental monitoring client; and the environmental monitoring device and the environmental monitoring client are directly connected with a single machine or the environment monitoring device and the environment monitoring client are connected to a security private network through a server group.According to the invention, the temperature and humidity state, the water immersion state, the commercial power state and the wire temperature of the computer room at a website can be monitored; 24-path USB states can be monitored to prevent abnormal data copying; power supply monitoring and remote controlling of three-path PDU are supported; four-path IO inputs and four-path IO outputs are supported and remote door magnetic control and acousto-optic alarming are realized. With the system disclosed by the invention, single machine control at the website is realized by deployment of the system;and a powerful security system is formed by networking of the security monitoring system and the monitoring platform at the monitoring center.

The invention discloses a coal mine geological water leakage alarm device, and belongs to the technical field of early warning equipment. The coal mine geological water leakage alarm device comprisesan alarm box, a fixing rod is rotatably connected to the middle of the inner wall of the right side of a control box through a hinge pin, a circular floating foam is arranged in the middle in a waterseepage monitoring fixing pin, a motor is fixed to the left side in the alarm box through screws, a circumferential end of a circular shaft penetrates through the alarm box to extend to the outside and is fixedly provided with an alarm lamp, a vibration bell is fixed to the left side of the upper portion of the alarm box through a fixing base, and the outer wall of the circumference of a limitingcolumn B is sleeved with a vibration plate. According to the coal mine geological water leakage alarm device, through close fit of structures, when a situation occurs, alarm is conducted through the lamp and multi-direction monitoring is conducted through the vibration bell, the alarm can be transmitted to a farther distance through vibration early warning of sound, even if a miner does not noticethe early warning of the alarm lamp during working, the situation that dangers cannot be found in time and the danger occurrence rate is relatively high can be avoided through the early warning of the vibration bell, and the monitoring effect is improved.

The invention relates to a monitoring system based on a set top box (STB), and a method utilizing the monitoring system. A child nursing system based on the STB comprises an infrared curtain module, a communication module and the STB, wherein the infrared curtain module is in communication with the STB through the communication module, and the STB is connected with an alarm module. A nursing method utilizing the child nursing system includes the following steps: (1) the infrared curtain module continuously detecting whether an alarm is sounded, wherein if no alarm is sounded, the step (1) is over, and if the alarm is sounded, a step (2) is carried out; (2) the STB receiving alarm information and conducting preprocessing on the alarm information, and examining whether a nursing state of the STB is on, wherein if the nursing state of the STB is off, the step (2) is over, and if the nursing state of the STB is on, the STB sends an instruction to the alarm module; (3) the alarm module broadcasting or sending an alarm indication sound. The child nursing system based on the STB is combined with the nursing method, and therefore the technical problem that an existing STB cannot provide a child nursing function can be effectively solved.

The invention belongs to the technical field of community transformer substation auxiliary systems and specifically discloses a 5g intelligent control community transformer substation auxiliary systemwith the early warning function. The system comprises an intelligent auxiliary outdoor unit and an automatic alarm module. The intelligent auxiliary outdoor unit is in electrical output connection with an intelligent control module through a wire. The intelligent auxiliary outdoor unit is in electrical output connection with a monitoring equipment module through a wire. The intelligent auxiliaryoutdoor unit is in electrical output connection with the automatic alarm module through a wire. And the automatic alarm module is in electrical output connection with an alarm output module through awire. The automatic alarm module is in electrical output connection with a moving ring monitoring module through a wire, and the moving ring monitoring module is in electrical output connection with avideo processing module through a wire. The auxiliary system based on the community transformer substation can perform high-speed transmission through the 5g transmission module, and can enable the transformer substation to intelligently monitor and automatically alarm through the automatic alarm module, so that the working efficiency of workers is improved.

The invention discloses an intelligent household fireproof antitheft alarming system. The intelligent household fireproof antitheft alarming system comprises a temperature sensor, an infrared sensor, a smoke sensor, an A / D converter, a single-chip microcomputer, a keyboard input, a display module, and an acousto-optic alarming device. Signals acquired by the temperature sensor, the infrared sensor, and the smoke sensor are transmitted in the single-chip microcomputer after the conversion of the A / D converter. The single-chip microcomputer is connected with the keyboard input, the display module, and the acousto-optic alarming device. The intelligent household fireproof antitheft alarming system is advantageous in that the temperature sensor, the infrared sensor, and the smoke sensor are used to acquire the information, and are used to transmit the acquired information to the single-chip microcomputer at the same time, and therefore the acousto-optic alarming and temperature and concentration display are realized.

The invention relates to a water quality adjusting method and device of a swimming pool, and belongs to water quality adjusting technologies of the swimming pool. The water quality adjusting devices comprises a PH sensor, an ORP sensor, a residual chlorine sensor, a turbidity sensor, a signal conditioning module, a microprocessor module, a FLASH memory module, a sound alarm module, an output control module and a touch LCD. Water quality data collected by the different sensors is obtained, the number of a medicament which needs to be added to adjust the swimming pool is calculated according toa water quality adjusting algorithm, water quality adjustment is monitored in a full automatic way, and the water quality is adjusted effectively.

The invention relates to the technical field of automatic control of thickeners, and provides an automatic control system and method for a traditional thickener in a tailing workshop. The system comprises an upper computer, a programmable controller, a traditional thickener and a sewage pool, an ore deposit quality detector is arranged at the bottom of the traditional thickener; a traditional thickener is communicated with two connecting pipelines, the connecting pipelines are connected with an ore pulp conveying pipeline, the connecting pipelines are sequentially provided with an electric valve, an ore pulp conveying pump, an electric valve and an electromagnetic flowmeter from the head end to the tail end, and the ore pulp conveying pump is provided with a temperature vibration sensor and a rotating speed sensor; a radar liquid level meter is arranged above the sewage pool, and a sewage pump is arranged on the sewage conveying pipeline. According to the invention, the automatic and efficient control of the traditional thickener can be realized, the influence of ore pulp conveying line faults on normal production is reduced, the labor intensity of workers is reduced, the operation stability and the operation efficiency of equipment are improved, and the production is maintained in an optimal state.

The invention discloses a system and a method of automatically detecting and alarming tap water radiation pollution. The system comprises a central control module, and a pulse counter, a storage module, a sound and light alarming module, a GSM communication module, and a WIFI communication module connected with the central control module, a power supply module, a detector, a shielding structure, a mobile phone APP or a computer client, and an Internet. An STM32 single chip microcomputer and a related radiation sensor are combined for monitoring a tap water radioactivity counting condition in a tap water pipeline, related data are stored in a local memory and can also be transmitted to the mobile phone or the computer client, when tap water radiation pollution happens, an abnormal condition is pushed to a related management person from a tap water company in real time via a GSM network, the alarming information is fed to the network at the first time via WIFI, and the purpose of handling an emergency situation in real time is achieved.

The invention provides a monitoring and early warning device and method for spontaneous explosion of vulcanized mine explosives. The monitoring and early warning device comprises a data analysis device, a sensor assembly, a fan and an audible and visual alarm, wherein the sensor assembly, the fan and the audible and visual alarm are connected with the data processing device. The wind power outputend of the fan is positioned in a blast hole. The sensor assembly comprises an infrared temperature measurement sensor module and an air pressure sensor module which are arranged in the blast hole. The data analysis device monitors environmental parameters in the blast hole through the sensor assembly and conducts safety evaluation on the blast hole according to environmental parameter data, and when the evaluation result shows that the spontaneous explosion risk exists, a single-chip microcomputer controls the fan and the audible and visual alarm to conduct blast hole ventilation and heat dissipation and send out audible and visual alarm information. According to the device, the spontaneous explosion risk of the explosives in the blast holes of the vulcanized mine can be evaluated througha plurality of environmental factors.

The invention discloses a novel planar spring pinch valve device which comprises an eccentric column and a chuck. A pipeline channel and an opening / closing channel which are crossed are arranged on the chuck. One end of the eccentric column is a working end, and the other end of the eccentric column is a driving end. The working end is located in the opening / closing channel. The driving end drivesthe working end to rotate forwards or backwards in the opening / closing channel. The working end gets away from or abuts against the inner wall of the pipeline channel when rotating forwards. By meansof the novel planar spring pinch valve device, pipelines are pinched to be closed through the elastic force of planer springs, and the pipelines with different diameters are pinched to be closed by the same device in different use environments or different use periods. An opening limit and a closing limit are arranged at the switch-on position and the pinch-switch-off position of a pinch valve, and it is avoided that the rotating position is located within an unexpected use range. A control circuit converts a large starting current into a small maintaining current according to a detected opening signal, and therefore the pinch valve is switched on through a large current, and the switch-on state of the pinch valve is maintained through a small current.

The invention relates to the technical field of an electric short-circuit protection device, in particular to a multifunctional fireproof short-circuit protector with a redundant device. The multifunctional fireproof short-circuit protector comprises a switch power supply, a current sampling device, a digital signal processor, a large-current power module, an isolation driving module, a redundant device, a charge absorption circuit and a load; the redundant device is a controlled mechanical switch, and an end L of an alternating-current power 220V is respectively connected with a resistor R1, the input end of the switch power supply, the input end of a differential amplifier and one end of the current sampling device. The multifunctional fireproof short-circuit protector is used in different alternating-current strong current fields such as household power, industrial power and the like, when the load is short-circuited, the abnormal power supply circuit is disconnected instantaneously at a microsecond speed, and no dangerous spark is produced on the short-circuit position; when the abnormal situation such as electric leakage happens in an electrical loop, the electric-leakage circuit is also disconnected at a high speed by the device; through the redundant device, even when the extreme situation that the large-power current module or the digital signal processor is abnormal occurs, the reliability of the device also can be guaranteed.