80results about How to "No additional hardware costs" patented technology

The invention provides a self-service vending system and a self-service vending method. The self-service vending system comprises an enclosed space, a user identity recognition system, a goods monitoring system, a shopping user judging system, a shopping information recording unit and a settlement system. The self-service vending method comprises a shelf board setting step, a user identity recognition step, a user positioning step, a goods perception step, a shopping user judging step, a shopping information recording step and a settlement step. The system and the method have the beneficial effects that the weight change of each shelf board is perceived in real time by adoption of a shelf board weight monitoring technology, and a video monitoring technology in an area in front of shelves is combined to judge the varieties and quantities of taken or returned goods; and user identities of the taken or returned goods are judged by utilizing a real-time human positioning technology, so that the varieties and quantities of goods taken from self-service supermarkets by each user are recorded and then settlement is carried out after the shopping process is finished.

The invention relates to a vehicle safety door opening reminding system based on a vehicle body controller and a control method of the vehicle safety door opening reminding system. A CAN bus is used for obtaining vehicle door lock state signals, whether a vehicle door is allowed to be opened or not is judged, and therefore whether the reminding function is activated or not is judged; an LED lamp installed at the in-vehicle handle position conducts vision reminding on a driver and passengers, and a buzzer arranged in an instrument conducts sound sensation reminding on the driver and passengers; and meanwhile, an out-vehicle width showing lamp or steering lamp is used for conducting vision reminding on back closing vehicles or conducting sound sensation reminding through a horn, the back closing vehicles are reminded of paying attention to parking vehicles on the front road face, and collision between the vehicle door and the back closing vehicles is accordingly avoided. According to the vehicle safety door opening reminding system and the control method, starting from door opening early alarming actual application scenarios, no radar sensor is adopted, the vehicle door opening reminding function can be achieved only by amending BCM controller software, and collision between the vehicle door and the back closing vehicles is avoided. Compared with a vehicle opening early alarming system at present, the vehicle safety door opening reminding system has the beneficial effects of being simple, practical, low in cost and the like.

The invention relates to a system for updating firmware from a long distance and a method thereof, and aims to provide an updating operation that a remote computer controls a local computer to execute the firmware through a network communication system, and firmware updating file data is memorized in the remote computer. The invention provides a firmware updating execution command which is input by the remote computer through a trigger module; the remote computer transfers the input firmware updating execution command and the firmware updating file data to the local computer through the network communication system; the local computer responds to the firmware updating execution command transferred by the trigger module through a control module, so as to receive the firmware updating file data transferred by the remote computer; in this way, the local computer is controlled to execute corresponding firmware updating operation, thereby providing a simple, convenient and safe firmware updating method.

The invention discloses a method for accomplishing trans-frequency point service in IP STB comprising: simultaneously accessing multiple IP STBs to IP network and broadcasting TV network; every IP STB uploading working frequency point information to IP server in IP network; when user triggers trans-frequency point service of first IP STB, then information of a second IP STB working at target frequency point is acquired from IP server, the first IP STB and the second IP STB establishing links and accomplishing trans-frequency point service by receiving TV program information data of corresponding target frequency point transmitted by the second IP STB. The invention also discloses an IP STB for accomplishing trans-frequency point service. The invention interlinks multiple IP STBs of broadcasting TV network through IP network, accomplishes sharing of program data acquired by IP STB through tuner, thereby accomplishes trans-frequency point service of IP STB with single tuner.

The invention discloses a start control method for an outdoor blower fan of an air conditioner. The outdoor blower fan comprises an outdoor motor and a motor driver. The start control method for the outdoor blower fan comprises the following steps of: charging a bootstrap capacitor in the motor driver by using a charging power supply after a start instruction is received; detecting the three-phase current of the outdoor motor in the bootstrap capacitor charging process; determining the rotor state of the outdoor motor according to the three-phase current of the outdoor motor in order to acquire the initial start operating condition of the outdoor blower fan; and performing start control on the outdoor blower fan according to the initial start operating condition of the outdoor blower fan. The start control method may accurately determine the initial start operating condition of the outdoor blower fan without an increase in hardware cost or prolongation in software execution time, thereby guaranteeing the heat-dissipating effect of an air-conditioning heat exchanger and improving the start reliability of the motor. The invention also discloses a start control device for the outdoor blower fan of the air conditioner.

The invention discloses a field test method for testing the performance and the secondary circuit of an extra-high-voltage direct-current phase-selecting switching-on device. On the basis of correctly setting the parameters of the phase-selecting switching-on device, the output voltage and current signals of a relay tester are connected in series with the corresponding-phase switch and the corresponding voltage and current loops of a switchyard three-phase circuit breaker. After that, a manual switching-on instruction is issued by an instation SCADA system. When all three phases of switches are in the switched-on state, instation fault wave recording data of a test switch are called. According to the time difference between the current starting point of each phase and the voltage zero-crossing point of a corresponding-phase switch, whether the control effect of the phase-selecting switching-on device meets the requirement or not can be judged. The effective test problem of the performance and the corresponding secondary circuit of the phase-selecting switching-on device can be solved. Based on the method, the hardware cost is not increased and the test wiring is simple and convenient in operation. The correctness of the performance and the corresponding secondary circuit of the phase-selecting switching-on device can be effectively verified.

The invention relates to an abnormity judgment method of a clothes treatment device. The clothes treatment device comprises a control device, a drum and a motor, wherein a belt transmission device is connected between the drum and the motor. The method comprises the steps of: detecting the conduction angle theta d of the voltage applied to the motor in the operating process of the clothes treatment device and judging whether the belt transmission device is abnormal by the control device according to the detected conduction angle theta d. The method is adopted by the clothes treatment device. Once the belt transmission device works abnormally, particularly loses the transmission function, the control device judges the abnormity in time and takes corresponding safe and alarming measures, thus the risk caused by the continuous working of the clothes treatment device when the belt transmission device works abnormally is avoided.

The invention provides a goods monitoring system and a goods monitoring method. The goods monitoring system comprises a closed space; goods shelves are arranged in the closed space; each goods shelf comprises shelf plates; goods are arranged on each shelf plate; a weight sensing device is arranged in each shelf plate; and the goods monitoring system further comprises a first goods sensing system and a second goods sensing system. The goods monitoring method includes the following steps of: shelf plate setting; first goods sensing; and second goods sensing. With the goods monitoring system andthe goods monitoring method of the invention adopted, a technical problem that a user wrongly takes goods and wrongly arrange goods can be solved by means of technical means, even if the user wronglyarranges the goods on other shelf plates, the shopping information of the user can be accurately and effectively recorded, and it can be ensured that settlement information is always consistent with actual shopping situations.

The invention relates to a method for judging a fault of a photovoltaic grid connection inverter. The method includes the following steps: acquiring current data at a DC side; according to a formula, calculating a scale factor K based on harmonic waves; according to a formula, calculating a set threshold T(h); if K<T(h), judging that a fault does not happen in the photovoltaic grid connection inverter; and if K>T(h), judging that a fault happens in the photovoltaic grid connection inverter. The invention proposes a judgment method of a self-adaptive protection scheme based on the scale factor K of the harmonic waves on the basis of the prior inverter protection. The method is adaptive to judgment of fault types of different inverters and is free from effects of external environment change so that judgment is accuracy.

The invention discloses a vehicle and a vehicle-mounted multimedia power management system. The system includes a power switch, an ACC detection circuit, a microcontroller and a microcontroller powersupply. The first end of the power switch is connected to an ACC power supply of the vehicle, the second end of the power switch is connected with a vehicle-mounted power supply, the output end of thepower switch is connected with a power amplifier and a power module in the vehicle-mounted multimedia, and the power switch cuts off the power supply path of the vehicle-mounted power supply to the power amplifier and the power module when the ACC power supply is cut off. The ACC detection circuit outputs a low power consumption signal when the ACC power supply is detected to be cut off. The microcontroller enters a low power consumption operation mode when receiving the low power consumption signal and controls at least part of a peripheral circuit of the microcontroller to be powered off. The microcontroller power supply converts the voltage supplied by the vehicle-mounted power supply to supply power to the microcontroller. The dark current of the vehicle-mounted multimedia can be effectively reduced, more requirements of the vehicle specifications are met, and the hardware cost is not increased too much.

The invention discloses an automatic identification method, an automatic identification device and a crane. The automatic identification method is used for preventing a variable-amplitude cylinder of the crane from colliding with a crane body, and comprises the steps as follows: detecting the angle formed by a large arm of the crane and a preset position, and detecting the rotation angle of a rotary table of the crane; determining the position of the variable-amplitude cylinder of the crane via the angle formed by the large arm of the crane and the preset position and the rotation angle of the rotary table of the crane; if the variable-amplitude cylinder is positioned in a dangerous space in which the variable-amplitude cylinder is likely to collide with the crane body, sending out a control signal which is used for preventing collision of the variable-amplitude cylinder with the crane body. According to the invention, safety problems about damage to the equipment and the like due to collision of the variable-amplitude cylinder with the crane body in the operation process of the crane are solved, and the operation safety is improved.

The invention provides an earphone device, a message reminding method of mobile equipment and a storage medium. When an earphone boxing instruction is detected, a Bluetooth earphone establishes Bluetooth connection with target mobile equipment so as to monitor whether a message reminding event occurs in the target mobile equipment or not through the Bluetooth connection; if that the target mobiledevice has a message reminding event is monitored, the Bluetooth headset sends a message reminding instruction to the Bluetooth headset box based on the carrier communication connection of the Bluetooth headset box; when the Bluetooth earphone box receives the message reminding instruction, corresponding message reminding information is displayed in a preset reminding mode. According to the earphone device, the Bluetooth earphone based on Bluetooth connection is used for monitoring the message reminding event of the target mobile device, and the message reminding information is displayed through the headset box when the message reminding event is monitored, so that a user is prevented from missing an instant message, the hardware cost of message reminding does not need to be increased, anduser experience is improved.