10results about How to "Stop in time" patented technology

The present disclosure relates to a detection method for abnormal stop of a control moment gyro of a spacecraft, comprising: obtaining a plurality of on-orbit telemetry data of the control moment gyro within a specified time period, and performing rejection and repair processing to obtain on-orbit repair data corresponding to each type of on-orbit telemetry data, each on-orbit repair data corresponding to a threshold value; calculating the first-order difference of each on-orbit repair data respectively, and comparing each first-order difference value with the corresponding threshold value; the specified time period includes a plurality of abnormal time periods and a plurality of normal time periods; if the absolute value of each first-order difference value is greater than the corresponding threshold value in all abnormal time periods, and the absolute value of each first-order difference value is less than or equal to the corresponding threshold value in all normal time periods within the specified time period, the control moment gyro is in an abnormal stop state after the last abnormal time period. The present disclosure can accurately and timely detect and discover the stop of the control moment gyro.

The invention discloses refractory material homogenization production equipment and a refractory material homogenization production method, and belongs to the technical field of refractory material processing. The equipment comprises a mixing cavity, concentration detection sensor groups arranged in different areas, a variable-frequency driving stirring device, a plurality of paths of independent feeding subsystems and a control unit. According to the method, a segregation potential matrix is calculated and an optimal feeding sequence is determined according to the median particle size and true density of each component, and each component is sequentially input at a self-adaptive rate according to a gradual increasing function; in the mixing process, a homogeneity gradient field is constructed, a segregation area is recognized, and segregation severity is quantified; the stirring speed is adjusted in a self-adaptive mode by combining a proportion-integral control law and feed-forward compensation, and a mixing end point is automatically judged after the homogeneity reaches the standard and is stable. According to the invention, the component uniformity and batch consistency of the refractory material are improved, and the energy consumption is reduced.

The application relates to a limiting sensor device and a greenhouse cotton quilt spreading system. The limiting sensor device comprises a shell, a circuit board and a mercury switch. The shell is a hollow cuboid. The circuit board is arranged in the interior of the shell and located at the bottom of the shell. The mercury switch is arranged in the shell. The mercury switch is a hollow columnar structure. The mercury switch is arranged longitudinally on the circuit board. The interior of the mercury switch is provided with a mercury bead. The mercury bead can flow along the column length direction of the mercury switch. The bottom end of the mercury switch is electrically connected with the circuit board through a wire. The top end of the mercury switch extends upwards. The number of the mercury switches is two or more. Any two adjacent mercury switches are connected in series. The plurality of mercury switches are suitable for transmitting electric signals to the outside. The limiting sensor device has high sensitivity. The plurality of mercury switches can realize on-off control of the switches under a slight angle inclination. Therefore, the current rolling and spreading state of the greenhouse cotton quilt can be obtained more timely.

The utility model discloses a double-block type sleeper demolding table, a demolding system and a prefabricated part production line, the double-block type sleeper demolding table comprises mold bearing devices, a sleeper bearing cross beam, a sleeper detection unit and a control unit, the two mold bearing devices are arranged side by side, and at least one mold bearing device is provided with a vibration motor; the two sleeper bearing cross beams are arranged between the two mold bearing devices side by side; at least one sleeper bearing cross beam is provided with a sleeper detection unit, and the sleeper detection unit is configured to detect whether the sleeper is separated from the sleeper mold or not; the vibration motor is in signal connection with the control unit and is controlled by the control unit; the sleeper detection unit is in signal connection with the control unit; and when the sleeper detection unit detects that the sleeper is separated from the mold, the control unit controls the vibration motor to stop working. According to the double-block type sleeper demolding table, product cracks in the demolding process of the double-block type sleeper can be reduced, and the qualified rate of products is increased.

The utility model provides an intelligent cold and hot water isolation pumping device which comprises a water pump body and a control module, and the water pump body is provided with a water inlet pipe and a water outlet pipe; an electromagnetic valve is further mounted on the water outlet pipe; a mounting hole is formed in the flow channel wall, vertically close to a pump cavity of the water pump body, of the water pump body, and a temperature sensor is arranged in the mounting hole through a mounting plate; and the electromagnetic valve and the temperature sensor are electrically connected with the control module. The utility model has the advantage of reasonable structural design.

The application relates to a motor drive protection circuit and an energy storage power supply. The circuit acquires the DC power supply voltage in real time through an under-voltage protection module, and cuts off the drive of the motor by outputting a first signal when the DC power supply voltage is lower than the reference voltage; and samples the motor working current through an overcurrent detection module, and outputs a second signal to stop driving the target motor when the working voltage corresponding to the working current exceeds the reference voltage, so that the target motor is stopped in time before the low-efficiency operation caused by under-voltage or the overheating damage caused by overcurrent, and the motor drive module is directly controlled through the hardware signal interaction between the modules, so that the response speed is fast. Meanwhile, the motor drive module normally drives the target motor according to the PWM signal when there is no abnormal signal, and triggers protection only when an abnormality is detected, so that the normal work of the target motor is not affected, and the target motor and the circuit can be protected in time when the power supply is abnormal.

The utility model belongs to the technical field of black pearl processing, and particularly discloses quantitative batching equipment for black pearl processing, which comprises a support plate and an inclined table, the inclined table is fixed at the center of the top end of the support plate, a sleeve is fixed on the left side of the top end of the support plate, an insertion rod is inserted and fixed in the sleeve, and a box body is welded at the top end of the insertion rod. And a guide block is welded at the lower part in the box body. According to the quantitative batching equipment for black pearl processing, a slide way is formed between a side plate and an inclined table, each notch is provided with a corresponding box body, pearls are stored in the box bodies after a cover body is opened, and after a baffle is lifted, pearl particles can slide from top to bottom along the slide way formed by the side plate, penetrate through a through groove and an opened valve and fall into a tank body; black pearls with different colors and diameters can be stored in each box body, batching and quantitative batching can be realized under the control of the controller, and the problem of abrasion in pearl delivery is solved.

The utility model relates to safe escape technical field, and disclose an emergency escape safety rope assembly, including slow -descending component, and the first nylon rope on slow -descending component and the spacing component inside setting of slow -descending component, the other end of first nylon rope away from slow -descending component is provided with the hook, the other end of slow -descending component away from first nylon rope buckle connection has safety lock, the other end of safety lock away from slow -descending component is provided with second nylon rope, the other end of second nylon rope away from slow -descending component is provided with the connecting lock, the other end of connecting lock away from second nylon rope fixed mounting has the protection component. The emergency escape safety rope assembly, when needing to move, need to rotate the connecting block manually subsequently make the card block fall off the gear, when the rescuer is in the air, can make the card block enter the gear, can liberate the hands hover, have the function of anti-panic, can be in time and stop under the condition that the rescuer appears in the confusion, and have the function of stopping when leaving the hand, improve practicality.

The utility model provides double-sensing fusion river and lake inspection unmanned aerial vehicle equipment, which mainly comprises an unmanned aerial vehicle body with a multi-rotor structure, and a full-spectrum camera and a visible light camera which are arranged below the unmanned aerial vehicle body, and a controller is also arranged in the unmanned aerial vehicle body; a data processing unit, an image registration module, an alarm module and a communication module are arranged in the controller, during working, the double cameras synchronously collect full-spectrum and visible light images of river and lake areas, after data are transmitted to the processing unit, two-mode data are aligned through the image registration module, then a hidden sewage draining exit is recognized by means of a pre-trained YOLO model, and once recognition succeeds, the alarm module gives an alarm if the recognition succeeds. And sound-light alarm is triggered immediately and information is transmitted to a ground control station. According to the utility model, the structural design is novel, the two cameras work cooperatively, image registration and an advanced identification model are combined, and the hidden problem of the sewage draining exit is effectively solved. The equipment greatly improves the recognition accuracy and the inspection efficiency of the hidden sewage draining exit of the river and the lake, and has the functions of timely alarming and remote monitoring.