104 results about "Safety specification" patented technology

The invention discloses a method and a device for charging a battery. The method comprises the following steps: when a battery module is charged with constant current or constant voltage, detecting the temperature of each buttery cell in the battery module; when the temperature of any one of the battery cells is over a threshold, reducing the charging current, wherein the threshold is not higher than the critical temperature requiring charging voltage reduction prescriptive in a safety specification; and after a period of time, judging whether the temperature of the buttery has a downtrend, if the temperature of the battery has a downtrend, maintaining the charging current, and if the temperature of the battery has no downtrend, reducing the charging current continuously. According to the steps, the battery can be charged under the condition of taking account of security consideration and no loss of battery capacity.

The invention discloses a novel electric energy metering system substation comprising a metering device, transformer substation monitoring active and standby servers (transformer substation monitoring system background), a forward isolation device and an electric energy metering retransmission workstation, wherein the forward isolation device divides the system electric energy metering system substation into two zones with different security levels, i.e. a security I zone (real-time control zone) and a security II zone (non-control production zone); the transformer substation monitoring active and standby servers belong to the system security I zone and are used for directly collecting and processing original electric energy metering data; an intelligent electric energy meter is accessed into the unit by an optical fiber, and the unit retransmits the synchronous electric energy metering data of the workstation by the forward isolation device; the electric energy retransmission workstation is arranged in the outside screen of the isolation device and belongs to the security II zone; the unit can store and retransmit electric energy metering data and transmits electric energy metering data obtained from the monitoring background to a metering master station by the IEC870-5-102 covenant. As a novel electric energy metering system substation, the invention realizes the integration design of transformer substation monitoring and electric energy metering, simplifies redundant configuration, makes data security level clear, conforms to the safety specification of an electric power system and conforms to the development tendency of a digital transformer substation.

A computer input apparatus is disclosed which has improved safety control. Computer input devices with coherent light sources are popular. However, coherent light sources may cause serious and unrecoverable injuries to human eyes. Accordingly, there are several safety specifications defined by manufacturers and governments. Therefore, an improved device is disclosed that includes a calibration circuit and a fault detection circuit to control the operation current of a coherent light source to be within the safety specifications range, and to monitor for fault conditions. Furthermore, a computer input apparatus with coherent light source can be operated without the traditional optical lens.

This invention provides a wireless earphone able to control a ringing signal in response to an incoming call. This invention particularly provides a wireless earphone enabling the volume of the ringing signal relied on the status of the wireless earphone. The wireless earphone depends on an ear-hook action of the earphone or a sensor detecting the ear-hook action to determine the status of the earphone to control the volume of the ringing signal. As such, when the wireless earphone is not in use, i.e. being not worn, the volume of the ringing signal is enlarged to make the user perceives an incoming call. When the wireless earphone is in use, i.e. being worn, the volume of the ringing signal is in a range meeting a safety specification. The hearing of the user thus can be protected.

The invention discloses a capacitor energy discharging circuit capable of reducing power loss and a power supply circuit thereof. The power supply circuit is connected with an AC (Alternating Current) power supply and a load, wherein the AC power supply outputs an AC voltage, the power supply circuit at least comprises a power supply input end, a filter unit, a main circuit and a capacitor energydischarging circuit, wherein the power supply input end is used for receiving the AC voltage; the filter unit is connected with the power supply input end and is used for filtering the noise of the AC voltage; the main circuit is connected with the filter unit and the load and is used for converting the filtered AC voltage into an output DC (Direct Current) voltage and sending to the load; and the capacitor energy discharging circuit is connected with the power supply input end, the filter unit and a common junction and is used for detecting whether the power supply input end receives the AC voltage or not and releasing electric energy stored in the filter unit when the detection result is negative. The capacitor energy discharging circuit provided by the invention not only accords with the standard formulated by the safety specification, but also can reduce power loss and further develop towards the direction of saving energy, reducing loss and improving the efficiency.

A barcode scanner having a laser alignment indication mainly has an alignment light source module and a reading light source module. After the alignment light source module is aligned with a barcode, the reading light source module is started to read barcode information. After irradiating the alignment light source module on a luminance parameter adjusting barcode set, a user can further adjust light source intensity of the alignment light source module, thereby solving a defect that an existing laser indication barcode scanner is incapable of adjusting luminance of the laser indication light. Moreover, the laser light source in the present invention uses Class I lasers meeting safety specifications, so that the present invention meets user requirements and is safe.

The invention provides a photovoltaic inverter leakage current detection method based on an exponentially weighted moving average forecasting method. The change degree of leakage current is quantified as the integral of the leakage current and the action time thereof, and by the exponentially weighted moving average forecasting method, dynamic protection on the leakage current is realized. Simulation and experiment results show that the method has effective protection on dynamic leakage current change, meeting the requirements of safety specifications, and the method can be applied to the field of dynamic protection with a time step characteristic.

The invention discloses an automatic generating method of a lift shaft drawing. The automatic generating method is characterized in that that a past lift product configuration information database is established, after plane parameters of a shaft to be drawn are input and the rated loading capacity is selected, listed lift car specifications conforming to the Lift Manufacturing And Installation Safety Specification are selected, meanwhile, configuration information related to the selected lift car specifications is extracted from the lift product configuration information database, after vertical-face parameters of the shaft are input and the rated speed is selected, the lift shaft drawing is automatically generated through drawing software, and automation and standardization of lift shaft drawing are realized. The invention further discloses another automatic generating method of a lift shaft drawing. According to the method, new lift car specifications are configured in a non-standard designing module through goal constraints, a lift car configuration scheme conforming to the Lift Manufacturing And Installation Safety Specification is obtained, therefore, automation of lift shaft drawing is realized, and meanwhile, design of the new lift car configuration scheme is completed.

The invention provides a broadband antenna. The broadband antenna is applied to a wireless communication device, and comprises a substrate, a grounding assembly, a first radiator, a second radiator, a third radiator and a signal feed-in assembly, wherein the grounding assembly is used for providing grounding; the first radiator comprises a first sector and a second sector, the first sector is connected with the second sector and approximately vertical to the second sector, the first sector is electrically connected with the grounding assembly, and the second sector extends along a direction; the second radiator is coupled with the first radiator; both ends of the third radiator are respectively and electrically connected with the second radiator and the grounding assembly; the signal feed-in assembly is electrically connected with the third radiator for transmitting or receiving RF signals; and the first radiator, the second radiator and the third radiator are arranged in a manner that the first radiator, the second radiator and the third radiator are sequentially formed on the substrate along the direction in the order of the first sector of the first radiator, the second radiator and the third radiator. The broadband antenna can increase the antenna bandwidth, improve the radiation efficiency and reduce the antenna size, can conform to specifications of a safety specification SAR at all operating frequency bands, and can be suitable for wireless communication systems of various kinds of different frequency bands.

The invention discloses an intelligent charging pile beside a residential quarter road. The intelligent charging pile comprises a charging pile support and the road. The charging pile support is fixedly installed on the side of the road. Supporting rods are fixedly installed at the upper end of the charging pile support. A ceiling is fixedly installed at the upper ends of the supporting rods. By means of cooperation of two dimensional codes and strong electricity relay control panels, single-chip microcomputer control panels, charging control panels and GPRS/3G communication modules, intelligentization, automatic management, unattended operation and all-weather operation of the charging pile are achieved, wherein each charging device is internally provided with one strong electricity relay control panel, one single-chip microcomputer control panel, one charging control panel and one GPRS/3G communication module; payment is conducted through wechat, fund is safe, a client is notified immediately after each payment, and the client can automatically apply for drawback; intelligent modules can monitor storage batteries, automatic power off is carried out after charging, the user is notified in real time, and fire risks are eliminated; current detection is used, each port supports one time of charging, storage batteries not conforming to safety specification are refused to be charged, connection with merchants is conducted quickly through wechat, and nearby charging pile seeking, charging reminding, special offers and more are acquired.

The invention discloses an energy collecting and voltage stabilizing power supply circuit based on taking electricity by using high-voltage power wires. The energy collecting and voltage stabilizing power supply circuit comprises an electricity taking coil, a voltage pump module, an energy storage module, a voltage sampling unit, a reference voltage module, a hysteresis comparison module, an electronic switch and a regulator module. The electricity taking coil is sleeved on a high-voltage cable, the output end of the electricity taking coil is connected with the voltage pump module, the voltage pump module is connected with the input end of the energy storage module, and the output end of the energy storage module is connected with the voltage sampling unit, the reference voltage module, the hysteresis comparison module, the electronic switch and the regulator module respectively; and the regulator is connected with a load. The energy collecting and voltage stabilizing power supply circuit has the advantages of simple structure, simple method reliability, little volume and light weight and can meet the safety specification of high-voltage wires.

The invention relates to a system and method for integrating tire pressure monitoring and remote key-free entering, which are applied to a vehicle and a key remote controller for the vehicle. The key remote controller for the vehicle emits a signal with a predetermined carrier frequency. When the vehicle is in a locking state, an integrated controller in the vehicle detects an unlocking signal from the key remote controller for the vehicle, transmits a tire information requiring signal to a tire pressure sensing module if confirming an identity authentication code of the unlocking signal from the key remote controller for the vehicle. The tire pressure sensing module sends a tire information signal at least including tire pressure data within a predetermined time limit, and transmits the tire information signal at the predetermined carrier frequency. Therefore, the advantages of hardware sharing and accordance with safety specification are achieved.

The invention provides a hybrid-cloud-based centimeter-level real-time positioning system and an implementing method thereof, characterized in that 1, grid points of a virtual reference station are calculated on a public cloud of a provider; 2, data of the virtual reference station are pushed to a private cloud of a user as required; 3, a terminal of the user is connected to the private cloud of the user; 4, after authorization and authentication are passed, the terminal transmits its own probability position to the private cloud of the user; 5, a broadcasting system on the private cloud of the user broadcasts a differential correction of a grid of the corresponding virtual reference station according to the probability position uploaded by the terminal. The public cloud and the private cloud are hybridized and matched; the personal solution saves calculation resources and meets the enterprise user safety specification.

The present invention relates to a 3-tier client/server safety specification automatic testing system. Said invention utilizes the topological concept of 3-tier structure to integrate the system composition components including full-automatic test working machine group, server and client terminal operation platform into a 3-tier client/server full-automatic safety specification testing system. By utilizing a testing task data base built in the server the operator can utilize the interaction of client terminal operation platform and server to test defined file, test result, access task products and make operation so as to can implement safety specification automatic measuremento f electronic product.

The present invention relates to safe network architecture scheme based on equity calculative service network safety architecture. It utilizes equity calculation and worldwide web service security (ws-security) etc standard to construct safe service network to solve safety problem in distributed computation, said scheme leading network and worldwide web service safety concept to said safety architecture, combined with network safety specification to solve safety problem in distributed computation field. Compared with other service network architecture, said scheme stress in precondition of completing network function realizes service network architecture security and reliability. The present invented method stresses communication and safety in network, leading different kinds of extensible labeling language safety specification and strategy access control based different kinds of specification, to solve network confidentiality, integrality, non-repudiation and usability etc problem.

The invention discloses a non-contact type bridge structure performance and safety rapid test and evaluation system and method. The non-contact type bridge structure performance and safety rapid test and evaluation method comprises the steps of: enabling a transmitting beam of a microwave vibration measurement system to cover a to-be-tested bridge structure, controlling the repeated transmission of a linear frequency modulation continuous wave microwave signal, and collecting a multi-channel intermediate frequency baseband signal; then carrying out combined positioning of the distance and angle dimensions of whole-field measurement points of the tested bridge structure according to the multi-channel intermediate-frequency baseband signal, and extracting to obtain the deformation and vibration time domain information of the multiple measurement points; verifying whether a bridge structure meets design and safety specification requirements or not according to multi-measuring-point deformation information of the tested bridge structure under the static load or dynamic load test working condition, and identifying modal parameters according to deformation and vibration information of full-field measuring points of the tested bridge structure under excitation; and according to the deformation quantity and the modal parameters, carrying out rapid test and evaluation on the performance and safety of the tested bridge structure. The non-contact type bridge structure performance and safety rapid test and evaluation system and the method are used for carrying out distance and angle combined dimension positioning and measurement on the bridge structure, and realize rapid testing and evaluation of structural performance and safety.

The invention relates to an intelligent design system and method for blasting excavation construction. The system comprises a human-machine interface, an inference engine and a knowledge base, wherein the human-machine interface is used for carting out human-machine conversation between a user and the system; the knowledge base comprises an expert experience knowledge base, a typical case knowledge base and a blasting rule knowledge base. Due to the establishment of the knowledge base and the inference engine, intelligent design of the blasting excavation construction is realized. The knowledge base covers expert experiences, typical cases, blasting rules and other knowledge, so that the knowledge quantity is large, the coverage is wide, and the pertinence is strong; the actual application of on-site engineering can be met. The inference engine can realize inference based on the expert experiences, the typical cases and the blasting rules. All the inference schemes are used for blasting safety specification inspection for inference based on the blasting rules. The user can compare the schemes obtained according to different inference modes and select one of the schemes, or correct local parameters of the schemes through an inference result accessing interface, to finally obtain the optimal blasting design scheme.

The invention relates to a flexible lifting gate, which comprises a gate body part, wherein the gate body part comprises connection fabrics, a bottom cross beam and a middle horizontal frame; the connection fabrics are connected with the bottom cross beam and the middle horizontal frame; and a safety door is arranged on the bottom cross beam. The flexible lifting gate is also provided with a safety door state display system, so that personnel can come in and go out conveniently, and the flexible lifting gate also can be used as an escape way when necessary. The whole gate has no need to be lifted up and down when personnel come in and go out, so that the complexity in operation is reduced, the electric energy is saved, the safety is increased, and the requirement of building safety specification is met.