315results about How to "Avoid electric shock" patented technology

An embodiment of the invention discloses a method and a device for discharging residual voltage of a bus of a servo controller. The method includes: detecting input voltage input into a rectifying module of the servo controller by an external power supply; judging that the servo controller is powered off when the input voltage is zero; controlling a discharging loop bridged on the bus to be connected when the servo controller is powered off and discharging electricity for a bus capacitor bridged on the bus; and detecting voltage of the bus capacitor and disconnecting the discharging loop after voltage of the bus capacitor is reduced to a safe voltage value. By adopting the method and the device for discharging residual voltage of the bus of the servo controller provided by the embodiment, after the servo controller is powered off by accidents, electric energy stored on the bus capacitor can be discharged fast, and voltage on the bus capacitor can be fast reduced to be below the safe voltage value, so that operators are prevented from suffering from electric shock and safety hazards are avoided.

The invention relates to a pop-up plug and a manufacturing method thereof, and in particular relates to an electrical plug. Harm caused by electric shock can be avoided when the electrical plug is pulled out. The electrical plug is provided with a reacting force ejector pin popping device which can pop the plug out of a socket, is embedded into a shell of the plug and is arranged in the center of two or more contact pieces of the electrical plug. The technology is widely used in life and production, greatly avoids electric shock and greatly improves the safety in using the electrical plug.

The invention discloses a vehicle wading early-warning method and system and a vehicle falling-into-water early-warning method and system. The wading early-warning method comprises the steps of obtaining vehicle wading depth and vehicle speed, judging if the wading depth reaches a set threshold and judging if the vehicle speed is larger than zero, wherein if the wading depth reaches the set threshold and the vehicle speed is larger than zero, an alarming prompt is given out. The falling-in-water early-warning method comprises the steps of obtaining vehicle wading depth and vehicle speed, judging if the wading depth is larger than zero and judging if the vehicle speed is equal to zero, wherein if the wading depth is larger than zero and the vehicle speed is equal to zero, high-voltage electricity output of a power battery is cut off. By means of the wading early-warning method and system, people in a vehicle can be reminded when the wading depth is too large, and therefore the vehicle can be prevented from being driven into a deep water area mistakenly and high-voltage parts of the vehicle can be prevented short circuit. By means of the falling-into-water early-warning method and system, high-voltage output of the power battery can be cut off automatically when the vehicle falls into water, and therefore passengers can be prevented from being hurt by electric shock and dangers caused by short circuit of high-voltage parts can be avoided.

The invention belongs to the leading front edge technology in safety and detection and discloses a practical method for realizing electric leakage alarm and power-down control according to bridge drain voltage testing method and principle of automatic control which can also be used in other technical fields aiming at detecting relative drain voltage. The method is applied to the following aspects detailedly: 1. supervision on electrical device drain voltage and production of detecting instruments for dangerous drain voltage. 2. Production of voltage-type (in relation to RCD) electric leakage protector against electric leakage of electrical device that endangers the operator. 3. Safe operation of electrical equipment and remote supervision plan design. And 4. specifically for the following market scopes: (1) protection against household electrical appliances that endanger human body. (2) Protection against electric tool electric leakage that endangers human body. And (3) earth leakage protection and protection against electric shock for electrical equipment in industrial and mining enterprises.

The invention provides a domestic charging pile with functions of automatically removing a charging plug and performing power-off protection. The domestic charging pile comprises a box body and a charging line storage box arranged at the lower end of the box body; a switch for controlling a charging socket to be powered off or powered on is arranged on the end part of the charging socket in the box body; a telescopic connector apparatus is arranged in the middle part of the box body, and the telescopic connector apparatus triggers and presses the switch to enable the turned-on switched to be fixedly connected with the charging socket; and a control unit is connected with the telescopic connector apparatus, and by inputting charging parameters to a control panel, the control unit controls the charging socket to charge an electric vehicle. By enabling the telescopic connector apparatus to trigger and press the switch arranged on the charging socket, the charging plug is powered on and fixedly connected with the telescopic connector apparatus at the same time, so that the power-on or power-off of the charging socket can be ensured when the charging pile is charged or not charged, thereby avoiding adverse safety factors caused by electric leakage of the charging pile or electric shock of a child caused by playing and the like, and achieving high safety; and after the electric vehicle is fully charged, the charging socket and the charging plug can be separated automatically, so that the service life of the charging battery of the electric vehicle is ensured.

The invention discloses a heating device for a gas humidifier. The heating device comprises a casing, a heating disc assembly and a center control module. The heating disc assembly is provided with a heating disc and is installed on the casing, and the heating disc is exposed above the casing. The center control module comprises a power source assembly, a human-computer interface and a main control circuit board assembly, wherein the power source assembly and the main control circuit board assembly are fixedly installed on the casing and accommodated in the casing, and the human-computer interface is installed on the casing and exposed on the side of the casing. The human-computer interface is electrically connected with the power source assembly and the main control circuit board assembly and operates the center control module by controlling and sending data. By optimal design of the casing, danger of burning and scalding and faults such as open circuit are effectively avoided, and danger of electric leakage and electric shock can be effectively avoided by optimal design of the heating disc assembly. By optimal design of the center control module, a whole humidifying system is high in intelligence degree, safe and reliable.

A charging pole for electric vehicle (EV) and a detecting method thereof. The charging pole (300) comprises a main switch (302), a main contactor (304), a second contactor (305), a charging coupler (306), at least one sensor (308) and a control unit (310). The sensor is used to detect acceleration and/or a tilt angle of the charging pole due to a transient outside force, for example a collision force caused by the EV driver's mis-operation. When the acceleration and/or the tilt angle is beyond a preset threshold, the control unit will instruct the main contactor to break the power contact of the charging coupler, so that the charging pole will be power-off.

The invention discloses a water-permeable dampproof safety socket. The safety socket comprises jacks and a live wire inserting sleeve, wherein waterproof inserting films are arranged in the corresponding jacks; the live wire inserting sleeve comprises a live wire connecting plate and a live wire groove sleeve, and a gap is formed between the live wire connecting plate and the live wire groove sleeve; a trigger switch assembly is arranged in the gap; the trigger switch assembly is arranged on the bottom surface of the live wire connecting plate; when a plug is inserted and the trigger switch assembly is not pushed, the live wire groove sleeve of the socket is not powered on, and even if a user is in contact with the conductive part of the plug, the user has no risk of high voltage electric shock, so that the socket is relatively high in safety; when the trigger switch assembly is arranged on the bottom surface of the live wire connecting plate and only when the plug is fully inserted in the socket, the overall socket can be powered on, and the conductive metal part of the plug is not exposed out of the socket, so that contact between the conductive part and the user can be effectively avoided in order to avoid electric shock; furthermore, the waterproof inserting films can effectively prevent water from entering the socket, so that the sealing performance and the safety performance of the socket are improved; and in addition, due to the water discharging opening, water in the socket can be discharged as soon as possible in order to prevent the socket from being suffered from moisture.

The invention discloses a safety socket which comprises a socket body and socket holes in the socket body. The safety socket is characterized in that a shielding cover is hinged with the socket body, outlet grooves corresponding to the socket holes are arranged on the shielding cover, and soft retaining sheets for covering the outlet grooves are arranged on one sides of the shielding cover. The shielding cover is covered on the safety socket when the safety socket is not used, and the shielding cover can have functions of preventing electric shocks. When the safety socket is used, a user can open the shielding cover to place a power supply plug cord in the outlet grooves, and the soft retaining sheets of the outlet grooves can cover the outlet grooves to prevent dust or water from entering the socket. The safety socket has the advantages of being simple in structure, safe and convenient to use and attractive in appearance.

The present invention relates to a non-contact power supply method for electric equipment. Said method includes the following measures: placing electric energy conversion circuit capable of converting commercial power or direct current into high-frequency alternating current at power supply side, placing high-frequency output coil in output loop of electric energy conversion circuit on a high-frequency magnetic core; placing power supply conversion circuit at electric equipment side, and placing high-frequency input coil in input loop of electric energy conversion circuit on another high-frequency magnetic core; combining the described two high-frequency magnetic cores, and utilizing high-frequency electromagnetic coupling mode to make the high-frequency electric energy produced by power supply conversion circuit positioned at power supply side be converted into commercial power or direct current required for electric equipment.

The invention relates to a heating layer for a megawatt wind turbine blade auxiliary mould and a manufacturing method thereof. The heating layer comprises at least one heating area, wherein each heating area comprises 5-15 nanometer carbon heating films, a temperature-controlled box, a power supply and a plurality of copper nets; each nanometer carbon heating film is provided with a plurality of small holes; each nanometer carbon heating film is paved on an inner structural layer of the blade auxiliary mould; each copper net is paved between adjacent nanometer carbon heating films; electrodesare arranged at two ends of each nanometer carbon heating film; two electrodes are respectively connected to the temperature-controlled box by power lines; a temperature-limiting line and a temperature-sensing line pre-embedded in each nanometer carbon heating film are connected to the temperature-controlled box; the power lines of the nanometer carbon heating films are in parallel connection with the temperature-controlled box; the temperature-controlled box is used for controlling the temperature of the corresponding heating area; the temperature-control box for each heating area is connected to an externally connected power supply; and all power supplies are in parallel connection and then are connected to a main power line. The heating layer for a megawatt wind turbine blade auxiliarymould can be used for ensuring that the blade auxiliaries are uniformly heated in the process of being solidified in the blade auxiliary mould. The heating layer for a megawatt wind turbine blade auxiliary mould can be widely applied to the field of wind power.

The invention relates to an automatic waterproof door and belongs to the technical field of stationary type or movable type closed devices used for opening positions of buildings, vehicles, fences or similar surrounding objects. The automatic waterproof door comprises a threshold, a door leaf, a trigger device and a waterproof device. The threshold is arranged on the ground outside the door leaf. The trigger device comprises a U-shaped pipeline and a floater, wherein the U-shaped pipeline comprises a first straight pipe and a second straight pipe, the second straight pipe is longer than the first straight pipe, the first straight pipe is arranged outdoors, and the second straight pipe is arranged indoors. The floater is placed in the second straight pipe. The trigger device further comprises a vertical rod, one end of the vertical rod is connected with the floater, the other end of the vertical rod is connected with a single pole switch, the single pole switch is electrically connected with the threshold, and the threshold is foldable. According to the technical scheme, the problem that rainwater in rainy days enters into the indoor space through a door seam can be effectively solved, and circuits are arranged indoors, so that the situation that the rainwater makes contact with the circuits, and short circuit occurs can be effectively avoided.

The embodiment of the invention discloses a leakage detection circuit which is connected with an electric device casing through a casing interface. The leakage detection circuit includes a bleeder circuit, a switching circuit and an alarm circuit, wherein the bleeder circuit is arranged between the casing interface and the ground and used for detecting leakage voltage generated by the electric device casing when the casing interface is connected with the electric device casing; the control terminal of the switching circuit is connected with the bleeder circuit, and the switching circuit is closed when the leakage voltage generated by the bleeder circuit reaches an alarm threshold value; and the alarm circuit is connected in series between the switching circuit and the anode of a power supply and used for generating alarm signals to alarm when the switching circuit is closed. The leakage detection circuit detects whether the electric device casing is charged by judging whether the bleeder circuit generates leakage voltage, and alarms when the electric device casing is charged, thereby being capable of timely reminding people to pay attention to check and clear troubles, particularly being capable of reminding maintenance personnel to pay attention to the safety during maintenance to avoid electric shock.

The invention relates to a multilayer composite insulation carpet for hot-line work and a preparation method for the multilayer composite insulation carpet. The preparation method comprises the following steps: adding preparations, such as an aging agent and a fire retardant, are added into natural rubber or ethylene-propylene-diene terpolymer to obtain a mixture according to requirements of operation fields with different voltage levels; carrying out banburying, rubber filtering and mixing on the mixture to prepare rubber sheets which are 0.3-1.5mm thick; stacking 3-8 rubber sheets and putting into a mold; and vulcanizing the rubber sheets through a flat plate vulcanization machine, and laminating the peripheries of the rubber sheets to form an integrated reinforcement edge, wherein the composite thickness of the insulation carpet is 2.0-4.5mm; the reinforcement edge is 6mm wide; the reinforcement edge and the integrated insulation carpet are planes. Compared with the prior art, the multilayer composite insulation carpet has the advantages that the peripheral structure of the insulation carpet is obviously simplified, so that the problem of low flexibility, caused by a complicated edge structure, of an insulation carpet product is solved, and the defects of low flame retardant performance, low multi-layer weather resistance and aging resistance and the like are overcome; meanwhile, the product has the advantages of simple structure, convenience in manufacturing, high product flexibility, high flame retardant performance, high rear-aging resistance and the like.

The invention discloses a multifunctional cable fixture. A metal upper clamp plate is detachably fixed on a metal lower clamp plate through a connector; a pressure induction pad is paved on the inner walls of the metal upper clamp plate and the metal lower clamp plate along the axial direction of a cable and is electrically connected to a pressure display on the metal upper clamp plate or the metal lower clamp plate; a partition plate is embedded into a through slot, an extended surface of the partition plate is parallel to the cross section of the through slot, and outer edge of the partition plate props against the inner wall of the pressure induction pad; a plurality of through holes where a single cable penetrates through are formed on the partition plate; and an electric leakage detector is further arranged on the side wall of the metal upper clamp plate or the metal lower clamp plate, and the electric leakage detector is electrically connected to an audible and visual pre-warning lamp. The cable fixture can separate the plurality of cables through the partition plate and feed the pressures of the outer walls of the cables subjected to extrusion of the fixture back in real time and perform immediate audio and visual alarm if the cables are of electric leakage to remind an electrician to operate in a power-off manner before maintaining the cables or performing electric shock protection preparation, so that the safety of maintenance by the electrician is greatly improved.

The invention provides a high-voltage system insulation detecting method and device, and an electric vehicle, which relates to the technical field of high-voltage systems, and is applied to the electric vehicle. An insulation detecting circuit is arranged between the positive pole and the negative pole of a power battery of the electric vehicle; the insulation detecting circuit includes a first resistor connected between the positive pole of the power battery and the vehicle body ground, a gate relay and a third resistor connected in series between the positive pole of the power battery and the vehicle body ground, and a second resistor connected between the negative pole of the power battery and the vehicle body ground. The high-voltage system insulation detecting method comprises the following steps: controlling a heating relay and a main negative relay in the battery pack of the electric vehicle to be closed after the electric vehicle is connected with a charging post; collecting avoltage across the first resistor and a voltage across the second resistor separately before and after the gate relay is closed; and determining the insulation of the high-voltage system according tothe collected voltages. The scheme provided by the invention realizes the insulation detection of the high-voltage system of the battery pack during the preheating process, and avoids electric shock to the personnel.

An embodiment of the invention discloses an adaptor, as well as a light source device and lighting equipment applying the adaptor. The adaptor comprises a body, an ejector bar movably connected with the body and an operating part located between the ejector bar and the body, wherein the body comprises a power source mounting part, a light source mounting part and an electric conducting line extending to the light source mounting part from the power source mounting part; the ejector bar is operably moved to a stopping position for stopping the power source mounting part from being matched with a power source module and a release position for releasing the power source mounting part for matching with the power source module; the operating part can operated to linearly move on the body to reach a connecting position and a disconnecting position, when the operation part is in the connecting position, the ejector bar is locked in the release position and the electric connecting line is connected, and when the operation part is in the disconnecting position, the ejector bar is released from the release position and the electric conducting line is disconnected. When the lighting equipment is not required to be used, the ejector bar is moved to the stopping position and locked by the operating part, and the electric conducting line is disconnected at the same time, accordingly, electric shock caused by the fact that the lighting equipment is started due to mistaken operation of a user is avoided, and the security of the lighting equipment is improved.

The present invention relates to a repeatable fuse for high current. The repeatable fuse includes: a housing provided with an inner space and a first lead terminal disposed on one side surface of the housing; a second lead terminal disposed on the side surface of the housing, wherein the second lead terminal is spaced from the first lead terminal; a movable contact plate disposed within the housing and electrically short-circuited with the housing, wherein the movable contact plate is electrically switched on-off with the first lead terminal or the first and second lead terminals; main and bias springs disposed within the housing, wherein the main and bias spring electrically switch on-off the first lead terminal and the movable contact plate or the first and second lead terminals and the movable contact plate; and a positive temperature coefficient thermistor inserted into the housing, wherein the positive temperature coefficient thermistor is electrically connected to the first and second lead terminals. The positive temperature coefficient thermistor includes a positive temperature coefficient device in which electric resistance increases at a temperature greater than a special critical temperature. The movable contact plate may be linked with the tension forces of the main spring and bias spring. That is, the movable contact plate may be linked to move in the direction in which the main spring and the bias spring are extended or compressed, thereby being electrically connected to or short-circuited with the first lead terminal or the first and second lead terminals.

The invention discloses a safety socket which comprises a base plate, a copper piece group, inserting groove pieces, V-shaped pressing rods and a return spring. The safety socket is characterized in that the V-shaped pressing rods are placed between the two inserting groove pieces, the return spring is placed below the V-shaped pressing rods and is arranged on vertical rods of the V-shaped pressing rods, the return spring is arranged in a sleeve on the bottom plate, the copper piece group comprises four elastic copper pieces, two contacting copper pieces and two copper piece conductors, and when a V-shaped pressing rod on one side is pressed down, a suspension end of a corresponding elastic copper piece can be connected with a corresponding contacting copper piece below or a fixing end of another elastic copper piece for communication. The safety socket has the advantages that under common circumstance, an inserting groove is in a power-off state, only when a plug is inserted and the two V-shaped pressing rods are pressed down at the same time, the inserting groove is connected and electrified, namely, if a single V-shaped pressing rod is pressed down, the inserting groove cannot be electrified, safe power using is really achieved, and the phenomenon that a child inserts a sharp object into an inserting hole out of curiosity and gets an electric shock is avoided.

The invention discloses a multi-aspect luminous high-power LED (light emitting diode) lamp bulb which can avoid electric shock danger, has good safety and excellent heat dissipation effect. The lamp bulb provided by the invention comprises a lamp cap (1), an insulating transmitting shell (2), a front end cover (3), a rear end cover (4), light source power panels (5) and a heat dissipation fan (6), wherein the insulating transmitting shell (2) is provided with an inner cavity; the light source power panels (5) are integrated with LED chips; the front end and rear end of the insulating transmitting shell (2) are respectively fixedly connected with the front part of the front end cover (3) and the front part of the rear end cover (4); the rear part of the rear end cover (4) is fixedly connected with the lamp cap (1); the inner wall of the insulating transmitting shell (2) is provided with a plurality of light source power panel slots (21) which extend axially; the light source power panels (5) are inserted in the light source power panel slots (21); the heat dissipation fan (6) is fixed in the inner cavity of the insulating transmitting shell (2); the front end cover (3) and the rear end cover (4) are all provided with air vents (90); and the light source power panels (5) are electrically connected with the lamp cap (1) through leads. The multi-aspect luminous high-power LED lamp bulb can be widely applied to the field of LED illuminating.

The invention belongs to the field of household appliances, and especially relates to an anti-loosening safety socket. The anti-loosening safety socket comprises a socket body, and at least one pair of slots is arranged in the seat body. An elastic reed is arranged in each slot; an inductance coil is fixedly connected in the slot; one end of the inductance coil is electrically connected with a conductive plate; the conductive plate and the inductance coil are electrically connected in series to the circuit of the elastic reed; the inductance coil and the elastic reed are arranged at the upperend and the lower end of the conductive plate respectively, a chute is formed in the side wall of the socket body, the inner bottom face of the chute is communicated with the multiple slots, a protection block is connected into the chute in a sliding mode, and a containing groove is formed in the inner bottom face of the chute. The inductance coil is connected to the circuit of the elastic reed inseries, when the pin is connected with the elastic reed, the inductance coil can generate an inductance phenomenon, so that the current on the circuit is gradually increased, the impact on an electric appliance caused by sudden increase of the current in the circuit can be effectively avoided, and the electric appliance is protected.

The invention relates to a cable tunnel troubleshooting device and a cable tunnel troubleshooting method, and belongs to the technical field of cable tunnel troubleshooting devices. The cable tunnel troubleshooting device comprises a body, wherein a walking mechanism, a path drawing system, a cable clamping mechanism, an image acquisition mechanism, a communication system, a control system, an illumination system, a gas analysis system and a fault detection system are arranged on the body; the troubleshooting device is matched with a remote control operation device, and the troubleshooting device is wirelessly connected with the remote control operation device and a background server through the communication system; the cable clamping mechanism comprises a telescopic clamping arm and a clamping claw, the clamping claw is connected with a clamping wheel through a connecting piece, and the clamping wheel rotates through a driving motor; and an adding part is arranged at the rear end of the body, an emergency repairing system is arranged on the adding part and comprises a constant-temperature storage box, a discharging pipe, a discharging head, a pump and a repairing device, one end of the discharging pipe is connected with the discharging head, and the other end of the discharging pipe is connected with the constant-temperature storage box through the pump. The problem that a fault removing device suitable for a cable tunnel is lacked at present is solved.