53results about How to "Does not increase hardware costs" patented technology

The invention relates to a cascading-type STATCOM (Static Synchronous Compensator) DC (Direct Current) side capacitor voltage balance control method. In the control method, the direct current control and the indirect current control are combined. The method comprises the following steps: generating an active current reference value; selecting a special bridge; generating an STATCOM output current reference value; carrying out indirect current control of the special bridge; and carrying out direct current control of a non-special bridge. The control method provided by the invention is used for controlling the cascading-type STATCOM DC side capacitor voltage balance. The method not only ensures the balance of a DC capacitor voltage between H bridges and improves the response speed of a control link and optimizes the system performance, but also does not require an additional hardware circuit and cannot ensure the hardware cost of a STATCOM device to be increased.

The invention discloses an SSL encryption/decryption method, a system and a computer-readable storage medium. The SSL encryption/decryption system comprises a client, a server and an encryption/decryption server. The method comprises the following steps: the client generates a random number password in the SSL encryption/decryption process and generates the random number password to the encryption/decryption server. The encryption/decryption server encrypts the random number password asymmetrically and returns the encrypted random number ciphertext to the client; the client sends the random number ciphertext to the server. The server sends a decryption request of the random number ciphertext to the encryption/decryption server. The encryption and decryption server decrypts the random number ciphertext and sends the decrypted random number cipher to the server. The server implements the subsequent SSL encryption process with the client according to the random number password. The invention reduces the hardware cost of the client and the server, does not affect the internal hardware design of the client and the server, and reduces the overall cost of a system comprising a plurality of groups of the client and the server.

The invention discloses electronic equipment, mobile communication equipment and a remote control device. The electronic equipment comprises a mobile communication equipment main body and the remote control device, and the equipment main body comprises a multi-contact touch screen, a first communication interface and a remote control unit, wherein the multi-contact touch screen is used for displaying information and inputting signals including touch signals; the first communication interface is positioned on the lateral surface of the equipment main body, and the first communication interface and the remote control device are connected by insertion; and the remote control unit is connected with a display unit, an input unit and the first communication interface and used for generating or finding remote control coded data corresponding to the input touch signals, sending the remote control coded data to the remote control device through the first communication interface and controlling the remote control device to send remote control coded signals corresponding to the input touch signals to controlled external equipment. The cost can be lower, and the mobile communication equipment can be more conveniently and effectively used for carrying out wireless remote control on the controlled external equipment.

The invention discloses a method for recovering system software in network terminating equipment. The method comprises the following steps that: a communication protocol and a backup strategy of the network terminating equipment are set between the network terminating equipment and customer premises equipment; the network terminating equipment transmits system software thereof needing backing up to the customer premises equipment for backup according to the set backup strategy and communication protocol when working normally; and a boot loader downloads the required system software from the customer premises equipment according to the set communication protocol when the network terminating equipment detects that the system software needs recovering at the boot loader of the network terminating equipment. The invention discloses a system for recovering the system software in the network terminating equipment at the same time. Through the scheme of the invention, a user can independently realize the recovery of the system software of the network terminating equipment and the method and the system have the advantages of simple method, convenient operation and capacity of saving the maintenance cost of the network terminating equipment.

The invention relates to a method for updating BMS embedded software of a shared battery. The method comprises the steps that 1, charging the battery; 2, detecting the version of the embedded softwareof the BMS; and 3, judging whether the version is the latest version or not, if so, continuing to charge, and otherwise, updating the BMS embedded software during battery charging. The BMS embedded software of a lithium battery in a two-wheeled vehicle or a three-wheeled vehicle can be updated on the premise of not increasing any hardware equipment, the scheme is simple to implement, and the hardware cost is not increased. Besides, the higher the utilization rate of the battery is, the more the charging and battery replacing times are, correspondingly, the shorter the time required for updating the BMS hidden danger software version is, and the more timely the updating is, so that the use safety of the battery is improved. Furthermore, for the user, BMS software updating is invisible, andthe user has no difference from normal battery charging and replacing in operation.

The invention relates to a control system and control method of a distributed storage cabinet. The control system comprises a master controller (10), auxiliary controllers (12a, 12b and 12n) connected with the master controller (10) through an RS485 communication bus in parallel, executing and sensing components in signal connection with the auxiliary controllers (12a, 12b and 12n) respectively and a system power supply circuit. The control system is characterized in that a parallel connection direct communication mode, a series connection relay communication mode and reset control signal lines exist between the master controller (10) and the auxiliary controllers (12a, 12b and 12n) and among the auxiliary controllers (12a, 12b and 12n) at the same time. By means of the control system and control method of the distributed storage cabinet, if one auxiliary controller gets into communication failure, the fault can be automatically judged immediately, and the function of the RS485 communication bus is recovered. If one auxiliary controller gets into other functional faults, front equipment of the auxiliary controller can find the faults in time, the auxiliary controller is restarted, and therefore the function of the auxiliary controller is recovered.

The invention discloses a method of recovering a damaged main bootstrap, and is applicable to equipment comprising a control unit, a processing unit and a storage unit. The storage unit comprises a normal code segment and a backup code segment, wherein, the normal code segment is used for storing normal BootRom procedure and the backup code segment is used for storing backup BootRom procedure. The method comprises the following steps: the control unit detects whether the equipment can be started from the normal BootRom procedure; and if the equipment can not start from the normal BootRom procedure, the control unit triggers the processing unit to amend the backup segment address of the storage unit, so that the control unit can be started from the backup BootRom procedure. In the invention, the repair of equipment is reduced; the stability of equipment is greatly increased; the need for adding any hardware is eliminated; and the hardware cost of products is not increased.

A method for acquiring a network adapter MAC address is applied to network equipment. The method comprises the following steps: reading bus address information of a network adapter of the network equipment during booting; judging whether the bus address of the network adapter is 0x0 or 0xFF; if the bus address of the network adapter is not 0x0 or 0xFF, reading base address information of the network adapter; reading a MAC address of the network adapter based on a designated offset position in a mapping space corresponding to the base address of the network adapter; saving the MAC address of the network adapter as a Setup variable to be displayed on a BIOS human-machine interface. By using the method for acquiring the network adapter MAC address, the MAC address of the network adapter of the network equipment can be automatically detected during the booting, and the MAC address can be displayed on the BIOS human-machine interface for being conveniently checked by the user, accordingly increasing the user experience.

The invention discloses a radio play channel updating method and device, and the method comprises the steps: determining the switching of a terminal from a first region to a second region, and determining that the intensity of a signal received by the terminal in the first region from a radio station is less than a preset threshold value after the terminal is switched to the second region, wherein the frequency bands supported by the terminal in the first and second terminals are different; searching a radio station in the second region, wherein the type of the radio station is the same as the type of the radio station listened to in the first region, and carrying out the play updating through employing the same type of radio station. According to the technical scheme of the invention, the method can achieve the instant switching of the same type of radio stations with no need of manually searching the channels, is simple and practical, and does not cause additional hardware cost.

The invention discloses a vehicle control method, device and plant and a terminal. The method includes the steps that the distance between an own vehicle and a target vehicle and the relative speed ofthe own vehicle and the target vehicle are obtained; the operation vehicle speed and the actual decelerated speed of the own vehicle are obtained in real time; whether the operation vehicle speed ofthe own vehicle meets a first preset condition or not is judged; if the operation vehicle speed of the own vehicle meets the first preset condition, according to the distance between the own vehicle and the target vehicle, the relative speed of the own vehicle and the target vehicle and the actual decelerated speed of the own vehicle, the second target decelerated speed of the own vehicle is obtained through calculation; and correspondingly, according to the second target decelerated speed and the actual decelerated speed of the own vehicle, the own vehicle is controlled. When the vehicle is at a low speed, the vehicle is smoothly braked through the own vehicle second target decelerated speed obtained through calculation conducted according to the distance between the own vehicle and the target vehicle, the relative speed of the own vehicle and the target vehicle and the actual decelerated speed of the own vehicle, and the actual decelerated speed of the own vehicle; and the deceleration smoothness and the response instantaneity of the vehicle are guaranteed.

The invention discloses a communication method and device, and belongs to the technical field of communication. The method comprises the steps: enabling a base station to divide a coverage region of a first antenna into at least two small regions; carrying out the weighted processing of the data carried by the time frequency resources of the small regions, so as to enable the data carried by the time frequency resources of the small regions to be mapped to a channel of the first antenna; merging the data carried by the time frequency resources of the small regions; transmitting at least two directional beams through the first antenna, wherein the directions of the directional beams are different, and the directional beams are corresponding to the small regions; or transmitting a first directional beam through the first antenna. Through dividing the coverage region of the antenna into a plurality of small regions and setting the transmission bandwidths for the small regions, the method remarkably increases the total transmission bandwidth which can be used for the coverage region of the same antenna, and can remarkably enlarge the capacity of a communication system.

The invention discloses a commutation point position correction method of a sensorless brushless direct current motor based on a terminal voltage method. The correction method is used for solving thetechnical problem of poor practicability of the existing commutation point position correction method of the sensorless brushless direct current motor. According to the technical scheme, by detectingthe terminal voltage in real time, waveform symmetry of the terminal voltage is kept, correction of a commutation point of the motor is achieved, accurate commutation of the motor is guaranteed, the operation performance of the motor is improved, and advance or lag commutation and out-of-step faults of the motor are prevented. According to the invention, no extra circuit is needed, and the hardware cost of the system is not increased. Complex mathematical and logical calculation does not need to be carried out in software, and the requirement for the calculation speed of the microprocessor isnot too high. Therefore, implementation is easy, and engineering application is facilitated. The method is not only suitable for a high-voltage high-power brushless direct current motor control system, but also suitable for other brushless direct current motor control systems, and is good in practicability.

The invention discloses a signal frequency measuring method based on a period tracking method and a mobile integer period method. The signal frequency measuring method comprises the specific steps that first, the timer frequency f[clk] and an allowed measuring error epsilon are set; second, if the upper limit f[max] of a measured signal frequency f is unknown, the mobile integer period method is used for measuring the signal frequency, and if the upper limit f[max] of a measured signal frequency f is known, whether the f[max], the f[clk] and the epsilon meet the relational expression that f[max] is smaller than f[clk]*epsilon is judged, if yes, the period tracking method is used for measuring the signal frequency, and if not, the mobile integer period method is used for measuring the signal frequency. The period tracking method can update the measuring result in time when detecting the situation that the signal period is prolonged, and the mobile integer period method achieves the effect that the measuring result is updated at least one time in each signal period. The period tracking method and the mobile integer period method can track the changing process of the signal frequency faster, the hysteresis error is reduced, the requested number of timers is not increased, the calculation amount is small, only a small amount of memory variable needs to be added, and therefore the hardware cost of a frequency testing device cannot be increased.

The invention discloses a method of connecting a panel personal computer to a network, a panel personal computer and a mobile terminal, wherein the method is applied to the panel personal computer, the panel personal computer is connected with the mobile terminal through an interface and the mobile terminal is provided with a network connecting module. The method of connecting the panel personal computer with the network includes that when data are needed to be sent, the data to be sent is sent to the mobile terminal through the interface so that the data to be sent is sent by the mobile terminal through the network connecting module. The data which are from the mobile terminal are received through the connector, corresponding application programs are called to analyze and process the data, wherein the data which are from the mobile terminal is the data which are received form the network side by the mobile terminal. The method of connecting the panel personal computer with the network, the panel personal computer and the mobile terminal are capable of enabling the panel personal computer not to be connected to the network without limits on the premise of not improving hardware cost of the panel personal computer.

A signal frequency real-time measuring method based on low-frequency square signal frequency prediction comprises the steps that (1) tested square signals are obtained; (2) the initial moment and the time width of the square signals are measured and recorded; (3) a linear fitting prediction method or a quadratic fitting prediction method is used, and a frequency linear fitting formula or a frequency quadratic fitting formula of tested signals is obtained; (4) prediction frequency is computed in real time and output; and (5) whether new signals are obtained is judged, if yes, the step (2) is carried out, and otherwise the step (4) is carried out. Prediction values are used for replacing measuring values to be used as output values, the prediction values can compensate the hysteresis errors existing in the measuring values, accordingly, the accuracy of real-time frequency measuring is improved, the measuring accuracy of steady state frequency is not lowered, an extra timer is not occupied, computing quantity is small, and meanwhile the hardware cost of frequency testing equipment cannot be increased.

The invention relates to a method, a device, terminal equipment and a storage medium for testing the safety of an elevator. The method comprises the steps that gyroscope three-axis data and acceleration sensor data of a to-be-tested elevator lift car are acquired; an elevator running curve is made in real time according to the gyroscope three-axis data and acceleration sensor data; acceleration average values of an X-axis, a Y-axis and a Z-axis corresponding to partial acceleration peak values of the elevator running curve are calculated; the absolute valves of the differences between the acceleration data of the X-axis, the Y-axis and the Z-axis and the respective average values; the number of the absolute values of the elevator running curve falling into each preset threshold range is counted; and the elevator safety testing result is output according to the preset threshold range and the number of the corresponding absolute value. By adopting the method, elevator running safety canbe primarily judged; non-professional personnel can also use the method, and do not need to enter a liftway for operation; an original elevator structure does not need to be changed; and the originalhardware cost of the elevator is not increased.

The embodiment of the invention discloses a method and a device for improving the stability of an embedded Linux system. Abnormal condition detection is carried out on the embedded Linux system in therunning period by setting a system detection script, if the abnormal condition occurs, formatting processing is performed on the abnormal partition, and data recovery is performed, so that the downtime of the embedded Liunx system can be greatly reduced, the reliability of the system is greatly improved, and the maintenance cost is reduced. According to the scheme of the embodiment of the invention, the maintenance cost can be reduced, and the corresponding hardware cost cannot be increased due to the adoption of software detection implementation.

The invention discloses a hybrid power automobile high-pressure system electric leakage fault diagnosis device and method. The high-pressure system comprises a direct-current converter, a starting and generating integrated motor and a lithium battery, the positive electrode of the starting and generating integrated motor is connected with the positive electrode of the direct-current convert and the positive electrode of the lithium battery separately, and the negative electrode of the starting and generating integrated motor, the negative electrode of the direct-current converter, the negative electrode of the lithium battery are grounded separately; the device comprises a system controller which is connected with the direct-current converter, the starting and generating integrated motor and the lithium battery through a CAN bus separately, the system controller receives a current Ib of the lithium battery, a current Im of the starting and generating integrated motor and a current Id of the direct-current converter in real time through the CAN bus, the vector sum of the current Ib, the current Im and the current Id is calculated, an absolute value Isum is obtained, and the system controller diagnoses the severity of electric leakage according to the size of the absolute value Isum. The hybrid power automobile high-pressure system electric leakage fault diagnosis device and method can prevent car burning accidents.

The invention relates to the field of satellite navigation, and discloses a satellite navigation trusted position service method. The method comprises the following steps: S1, arranging navigation messages according to a satellite navigation system interface control file; S2, according to a self-defined coding format, filling information identification in the navigation messages, or filling the information identification by utilizing the time gap of broadcasting the navigation messages; and S3, generating and transmitting a satellite navigation enhancement signal which can be received by a satellite navigation receiving terminal according to the satellite navigation system interface control file. According to the method, navigation enhancement signals are generated and transmitted in accordance with a true satellite navigation signal format, and reserved and/or blank bits in the satellite navigation signal navigation messages are used as information identification; and after the navigation terminal receives the navigation enhancement signal, the navigation terminal demodulates the information identifier and gives the information identifier to the application software, and the application software decodes the information identifier to acquire the position and/or the related information so as to realize the service function based on the trusted position.

The invention relates to a method for testing a conducted interference characteristic simulation model based on a power electronic transformer system. The method comprises the following steps: establishing a system rectifier stage model; establishing a system isolation level model by adopting a double-active-bridge DC/DC converter structure through a phase shift control method; constructing an operation simulation model in simulation software through the system rectification-level model and the system isolation-level model; considering a high-frequency model of a passive device in the power electronic transformer system, extracting main parasitic parameters in the circuit structure, and establishing a high-frequency simulation model of conduction interference of the power electronic transformer system; arranging a first resistance-capacitance branch and a second resistance-capacitance branch in the high-frequency simulation model to measure conducted interference. Compared with the prior art, the simulation test of the conducted interference can be conveniently and quickly carried out on the PET system comprising two or more power conversion links, meanwhile, the conducted interference characteristics independently generated by different power conversion links in the same system can also be tested, and the accuracy is high.

The invention provides an equipment control method and device, electronic equipment and a readable storage medium, and relates to the technical field of intelligent control. When a voice key is triggered, a first device determines whether a target pickup mode is a near-field pickup mode or a far-field pickup mode according to the triggered duration. And if the mode is a near-field pickup mode, voice information is acquired, and the collected voice information is sent to the second device. And if the mode is the far-field pickup mode, a far-field pickup mode starting signal is sent to the second device, and the second device acquires voice information and the second device is controlled according to the voice information. Therefore, whether the far-field pickup mode is started or not is determined according to the triggered duration of the voice key, a wake-up word is not needed, and a pickup unit of the second device does not need to be in a working state all the time, so that the problem that the second device is awakened by mistake due to the wake-up word is solved, meanwhile, the standby power consumption of the second device is reduced, and any hardware cost is not increased.