43results about How to "Avoid personal danger" patented technology

The invention relates to a welding fixture, in particular to a steering supporting welding fixture. The steering supporting welding fixture solves the problems that an existing fixture is complex in structure and inconvenient to operate, has potential safety hazards in the turnover process, and is low in production efficiency. A standard board of the fixture is horizontally arranged, the two ends of the standard board are respectively connected with a connecting fixing plate, a first locating supporting part and a second locating supporting part are arranged on the upper surface of the standard board in parallel side by side, a first compressing part, a second compressing part, a first locating compressing part, a third compressing part and a fourth compressing part are sequentially installed on one side of the standard board, and a fifth compressing part, a sixth compressing part, a second locating compressing part, a third locating compressing part, a seventh compressing part and the two connecting fixing plates are sequentially installed on the other side of the standard board. The steering supporting welding fixture is used for instrument board framework welding.

An automatic alarming method and system of a robot under an environment of the internet of things are characterized in that whether a dangerous event of an elevator of one high-rise building occurs or not is judged by an automatic alarming device according to a voice signal in the elevator of the high-rise building in one city, when a target loudspeaker device body is judged to exist in registered loudspeaker devices, and the straight-line distance between the target loudspeaker device body and position information of the high-rise building where the dangerous event occurs is calculated to be smaller than an assigned threshold value, automatic alarming voice including the position information and a building name of the high-rise building where the dangerous event occurs is sent to the target loudspeaker device body and a monitoring station through the internet of things, and a service charge which is in a direct proportional relation with the number the occurrence times of the dangerous events is deducted from a bound electronic account of the high-rise building where the dangerous event occurs; and the target loudspeaker device body broadcasts the automatic alarming voice. The embodiment of the automatic alarming method and system of the robot under the environment of the internet of things, the dangerous event of the elevator of one high-rise building can be known by the outside world in time, and the robot is stimulated to take part in dangerous alarming.

The invention provides an electromagnet protection circuit which can avoid the situation that an electromagnet is damaged due to continuous electrification and overheating when a control signal breaks down, so that potential safety hazards are eliminated, and personal danger is avoided. The electromagnet protection circuit is connected with a control signal input end of a control circuit, the electromagnet protection circuit comprises an electromagnet L1, MOS tubes Q1 and Q2, resistors R1 to R3 and a capacitor C1, one end of the electromagnet L1 is connected with a power supply VCC, the other end of the electromagnet L1 is connected with a drain electrode of the MOS tube Q1, a grid electrode of the MOS tube Q1 is connected with one end of the resistor R1, one end of the resistor R2 and a drain electrode of the MOS tube Q2 and then is connected to a control signal input end of the control circuit, a grid electrode of the MOS tube Q2 is connected with the other end of the resistor R2, one end of the capacitor C1 and one end of the resistor R3, and source electrodes of the MOS tube Q1 and the MOS tube Q2 are connected with the other ends of the resistor R1, the resistor R3 and the capacitor C1 and then are grounded.

The invention discloses a fiber bragg grating pressure sensor capable of achieving positive and negative pressure monitoring and a testing method. The fiber bragg grating pressure sensor comprises a connector, a filter screen, a base, an outer shell, a corrugate pipe, a first fiber bragg grating, a second fiber bragg grating, an optical fiber, an optical cable connector, an armored optical cable, a brace, a flange plate, an outer shell cover and a strain beam, wherein the outer shell cover is used for protecting the optical fiber from a sealing glue sealing part to an optical cable connector part, and the strain beam is used for applying prestress. The fiber bragg grating pressure sensor capable of achieving the positive and negative pressure monitoring and the testing method are suitable for the monitoring of pressure safety of oil and gas pipelines, urban underground gas pipelines, heating power pipelines, water supplying pipelines, oil tank pipelines, oil conveying pipelines and other pipe networks, the potential safety hazards that an electronic sensor is electrified and is unsafe in nature are eliminated, and meanwhile the capacity of phases is also improved greatly; the fiber bragg grating pressure sensor is applied to the aspect of real-time online monitoring of coal and rock mass gas pressure, errors caused by single data monitoring are avoided, the sensitivity and the accuracy of the system are improved, manpower, material resources and time are saved, and meanwhile the danger probably brought by personnel on site can be avoided.

The present invention relates to a long cable control method of a mining scraper conveyor drive system, which is characterized in that it includes the following steps: when the scraper conveyor is running, one of the component control systems is the main control system, and the main control system uses In order to control the speed of the active motor of the scraper conveyor, another component of the control system is the slave control system, which is used to control the torque of the driven motor of the scraper conveyor, and the general control system samples the sub-control system of the scraper conveyor The data is analyzed, and according to the sampling data, the operating conditions of each control system are controlled and adjusted to achieve real-time monitoring, real-time adjustment, and automatic adjustment of intelligent operation. The advantages of the invention are: the circuit structure of the invention is simple, the cost is low, the control is easy and the cost performance is high, and various special working conditions of the driving system of the scraper conveyor can be realized more effectively, and the regenerative energy can be effectively utilized.

The first aspect of the present invention provides a vehicle warning device, which includes a vehicle collision detection unit, the vehicle collision detection unit is connected to a control unit, the control unit is connected to a pop-up device, and the control unit is also connected to an audible and visual alarm device. The control unit is connected with a power supply, the control unit is connected with a control button, and the control unit is connected with a reset button. The second aspect of the present invention provides an instant warning method for accidents, which includes a. The inertial sensor of the vehicle detects the vehicle collision signal, and compares the value of the collision signal with the set value; b. The control unit controls the pop-up of the warning sign; steps a and b are executed in sequence, and the warning sign pops up. The installation position of the vehicle warning device and the instant warning method for accidents provided by the present invention is on the top of the vehicle, which is easier to be found by distant vehicles; and the warning device in the warning method does not need to be manually assembled and placed, and can be popped up by itself when needed, and can be removed when not in use. Take it back on your own.

The invention belongs to a municipal engineering drainage device, especially a linear invisible rainwater catchment apparatus applied in collecting rainwater in the open square and pedestrian mall, characterized in that it comprises shell with drain, capping with collecting channel, which, with inlet, is connected with drain tank of shell. Cuboid or round pipeline is formed after locking between shells and capping. Said collecting channel is comprised of two side boards and on the bottom of said shell drain hole is preset to connect with assistant shell. The beneficial efficiencies are that by laying linear invisible rainwater catchment apparatus in the open square and pedestrian mall and laying collecting channel to linear inlet along artificial surface and buried pipeline strike, conventional municipal laying construction scheme for long is changed, there is no need to set well cover, collecting rainwater is quick and so on.

The invention discloses an insurance type magnetic recoil generator, which comprises a casing, the top of the casing is fixedly connected with an upper cover, the surface of the upper cover is provided with an integrally formed through hole, and the inside of the through hole is penetrated. There is a high temperature resistant wire, the bottom of the high temperature resistant wire is fixedly connected with a terminal frame, the bottom of the terminal frame is fixedly connected with an adhesive tape, one side of the adhesive tape is provided with a magnetic steel, and the bottom of the magnetic steel A safety component is fixedly connected to the side surface, and an armature component is arranged at the bottom of the safety component. The invention uses the magnetic steel to cut the magnetic induction line under the action of strong force, induces the current, leads the outside through the wire on the wiring frame, and realizes ignition. The function of the air hole is to discharge, and the airflow can impact and fall off a large amount of dust on the surface, ensuring that there is no dust on the surface of the generator, and avoiding personal danger caused by dust conduction.