95results about How to "Solve technical problems of potential safety hazards" patented technology

The present invention discloses a system, method and device of fault detection of a battery system and an electric vehicle. The pre-charge resistor in the battery system is in series with a pre-charge relay and then is in parallel with an anode relay; the first end of the anode relay is connected with the anode of a power supply module; the second end of the anode relay is connected with a capacitor; and a cathode relay is connected with the cathode of the power supply module. The fault detection system comprises: a first voltage measurement device which has one end connected with the connection node between the pre-charge resistor and the pre-charge relay and the other end connected with the cathode of the power supply module, and is configured to detect the faults of the cathode relay and/or the pre-charge resistor; a second voltage measurement device which has one end connected with the second end of the anode relay and the other end connected with the cathode of the power supply module, and is configured to detect the faults of the anode relay and/or the pre-charge relay. According to the invention, the technical problem is solved that the faults of a high-voltage relay in an electric vehicle battery system cannot be detected in the prior art so that the electric vehicle battery system has safety risks.

The present invention discloses a system and method for monitoring the state of a bolt. The method comprises a step of collecting the bolt state parameter of an intelligent bolt through a bolt pretightening force tester, a step of calculating the pretightening force of the intelligent bolt according to the bolt state parameter, a step of comparing a prestored pretightening force measurement record and the pretightening force and determining whether the pretightening force of the intelligent bolt is in a preset safety range, and a step of uploading the pretightening force to a server when the judgment result is zero. According to the system and the method, the technical problem of hidden danger brought by the no control of the attenuation condition of the bolt pretightening force caused by the condition that the pretightening force of the bolt can be not accurately monitored is solved.

The invention discloses a security protection method, device and system for a power information network. The method comprises the steps of: dividing the power information network into at least one network security domain, wherein the network security domains are sub networks having the same security protection demand in the power information network; and deploying network isolation equipment between the network security domains, wherein the network isolation equipment is used for executing at least one of the following functions: network access control, data transmission limitation, security detection, virus blockade, flow cleaning and network recovery. The method, the device and the system solve the technical problem that the existing power information network has security risk in the absence of a perfect network security guarantee architecture.

The invention, which belongs to the technical field of smoke detection, relates to a smoke detection method and device and a detector. After a smoke sensing concentration value of a target environmentis detected to be larger than a calibrated smoke sensing threshold value, whether the target environment temperature value exceeds a temperature threshold value is determined again, so that that a fire phenomenon occurs in the target environment is determined after the temperature value exceeds the temperature threshold value, thereby giving a fire alarm. When the temperature value is lower thanthe temperature threshold value, whether a combustible gas concentration value exceeds a combustible gas concentration threshold value or not is determined, so that the pot overflowing phenomenon is accurately judged; and technical problems that in the prior art, a smoke detector gives an alarm after detecting smoke, kitchen smoke, fire alarm and pot overflowing phenomena cannot be distinguished,and thus potential safety hazards are generated are solved.

The invention discloses a method and system for processing data. The method is applied to an electronic client-side, wherein the electronic client-side achieves transferring of electronic data by being matched with a system for processing the data. The method includes the steps that a first request is sent to the system for processing the data, the first request data includes account information of the electronic client-side, a standard character string generated by the data processing unit based on the first request is received, the stand character string corresponds to the first request in a unique mode, a response request returned by a second request generated by the system for processing the data based on an electronic data receiving end, and the information about whether electronic data values are transferred or not is fed back to the system for processing the data based on the response request.

The invention provides a railway tank car which comprises a tank body, a tank car chassis assembly and a saddle pressing plate assembly, wherein the bottom of the inner wall of the tank body is provided with a liquid trap, the saddle pressing plate assembly comprises a pressing plate type connecting structure and a saddle for supporting the tank body, the bottom of the saddle is connected with the tank car chassis assembly, and the two ends of the saddle are fixed by the pressing plate type connecting structure. According to the invention, the liquid trap arranged at the bottom of the inner wall of the tank body of the railway tank car is used for realizing the effect of up loading and down unloading, and the defect that unloading rate is affected because of the up loading and down unloading structure adopted in the prior art can be solved; in addition, since the tank body and the tank car chassis assembly are connected and fixed by the saddle pressing plate assembly, the technical problem that the safety hazards exist in the prior art since the tank body and the chassis assembly of the railway tank car are mostly in tank belt connection can be solved further; therefore the railway tank car provided by the invention has the advantages of high unloading rate and reliable and safe operation.

The invention discloses an audit data secure transmission method and system. The method comprises the steps that a first terminal obtains preset first random salt, and encrypts the audit data to be transmitted through an encryption algorithm to obtain a salted ciphertext, wherein the first random salt is secret key data generated by the server according to the ID number of the server and the ID number of the first terminal and sent to the first terminal, and the ciphertext transmission message comprises a salting ciphertext, the ID number of the server and the ID number of the first terminal;a second terminal is connected with the server according to the ID number of the server, and obtains the first random salt from the server according to the ID number of the first terminal; and the second terminal decrypts the salted ciphertext according to the first random salt to obtain to-be-transmitted audit data, so the technical problem that great potential safety hazards exist due to the fact that the audit data is encrypted and the encrypted audit data and the secret key are transmitted together in the prior art is solved.

The invention discloses a fan coil return air purifying device and an air conditioner. The fan coil return air purifying device comprises a groove-shaped shell which is formed by sequentially connecting a first side plate, a bottom plate and a second side plate, an electric control box and a purifying box. An electric control box body of the electric control box is installed on the opening side of the groove-shaped shell, and an electric control box cover of the electric control box is rotational fixed to the two side plates on the opening side of the electric control box body. An electric appliance box is installed on the inner side of the electric control box cover. Two microswitches are installed in the electric appliance box and are connected with a firing line and a null line of a power source correspondingly. Switch keys of the two microswitches extend out of a box body of the electric appliance box in the direction perpendicular to the electric control box cover. The purifying box is installed in the space, between the electric control box body and the bottom plate, of the groove-shaped shell, an initial-effect filtering net of the purifying box is pressed on the switch keys of the two microswitches in a covering manner after being installed, and therefore the two microswitches communicate with the firing line and the zero line correspondingly for supplying power; and the switch keys are bounced off to thoroughly cut off power supply after the initial-effect filtering net is demounted; and the potential safety hazards existing in the demounting and mounting process of a fan coil air opening purifier are avoided.

The invention discloses an automobile door disassembling and clamping device which comprises a base assembly, at least one clamping assembly and a moving assembly, the base assembly comprises a base, the clamping assembly comprises a clamping part and a linear driving piece, the clamping part is arranged above the base, the linear driving piece is connected to the base, the extending end of the linear driving piece is hinged to the clamping part, and the moving assembly is arranged on the base. The linear driving part is connected to the clamping part and used for driving the clamping part to move close to the automobile door so as to clamp the automobile door, and the moving assembly is connected to the linear driving part and used for adjusting the clamping assembly to move in the plane perpendicular to the axis direction of the extension end of the linear driving part so as to be matched with the clamping assembly to clamp the automobile door at any position in the plane. The technical problem that in the prior art, a vehicle door is fixed and clamped in the mode that buckles arranged on the two sides of a clamping device limit the vehicle door, and consequently potential safety hazards exist in the vehicle door dismounting process can be solved.

The invention belongs to the technical field of electric vehicles, and discloses a vehicle-mounted charging system and method. The system comprises a vehicle charging interface, a vehicle-mounted charger, a power battery and a vehicle control unit, when electric energy is accessed into the vehicle charging interface, a charging signal is sent to the vehicle-mounted charger; the vehicle-mounted charger sends a charging awakening signal to the vehicle control unit according to the charging signal; the vehicle control unit detects the state of the electric driving system when receiving the charging awakening signal, and sends a charging allowing command to the vehicle-mounted charger when the state of the electric driving system is a closed state; the vehicle-mounted charger outputs electricenergy to the power battery according to the charging allowing command; and the power battery receives the electric energy and charges according to the electric energy. By means of the mode, it is ensured that a vehicle cannot enter a drivable state in the charging process or when a charging cable is connected, and damage to the vehicle-mounted charging device or electric shock danger is avoided.The technical problem that potential safety hazards exist in an existing alternating current charging device is solved.

The invention discloses a charging control method, a terminal, and a charger. The charging control method provided by the invention can be applied to a terminal, and comprises the following steps: receiving an electrical signal transmitted by a charger after the charger is connected with a terminal; acquiring the rated charging current value of the charger according to the electrical signal; and setting a maximum charging current which the terminal allows the charger to input according to the rated charging current value and the maximum charging current value of the terminal. Through the charging control method of the invention, the technical problem that there is potential safety hazard when users use a nonstandard charger to carry out charging is solved.

The invention is applicable to the technical field of digital television security authentication and provides a closed loop-type security authentication method for business system portals and a system adopting the same. The method comprises the following steps: generating a first user logging-in certificate by an AAA according to a user ID and a business ID and sending the certificate to a PORTAL; jumping the PORTAL carrying the first user logging-in certificate and the user ID to a business system portal according to the business portal address; generating a second user logging-in certificate by the business system according to the previously agreed rule, comparing the second user logging-in certificate with the first user logging-in certificate, and determining that the user is jumped from the master portal if the two certificates are identical; and extracting the first user logging-in certificate by the AAA according to the business system ID and comparing the first user logging-in certificate with the second user logging-in certificate, and succeeding the authentication when the two certificates are identical. The closed loop-type security authentication method for the business system portals and the system adopting the same, provided by the invention, can solve the technical problem of potential safety hazards in the existing single link-type jumping.

The invention discloses an automated terminal AGV operation site maintenance device and a system. The device includes an AGV and a maintenance room, when a maintenance task is performed, maintenance personnel enters the maintenance room, the AGV is operated under the control of a vehicle management system to bear the maintenance room to a maintenance area according to a set route so that the maintenance personnel can perform the maintenance task in the maintenance area, the maintenance area overlaps with a lock area designated for the AGV, based on the protection of the lock area, other operation AGV is prevented from entering the maintenance area, the safety of the maintenance personnel is guaranteed, which does not cause safety accidents, and the technical problem of safety hazards in existing maintenance methods of the AGV operation sites is solved.

The present invention discloses a device number method and system. The method comprises the steps of: reading a device number, and generating a second field of a vpn file of a device; determining thetype of the device, and generating a first field of the vpn file of the device according to the type of the device; generating a vpn file name of the device according to the first field of the vpn file of the device and the second file of the vpn file of the device; and generating an IP address of the device according to the vpn file name of the device. The system comprises a first information obtaining module, a second information obtaining module, an information determination module, a generation module and a data computing module. The device number method and system achieve the purpose of classification numbering and management of the different types of devices, have the technical effect that different types of the devices cannot be mutually accessed and solve the problem that there areinformation hidden dangers because different types of devices can be mutually accessed.

The invention relates to the technical field of shipbuilding, and discloses a hull cabin internal insulation structure and a manufacturing method thereof. The hull cabin internal insulation structurecomprises an insulation sleeve block, an insulation base layer and an insulation heightening layer, wherein the insulation sleeve block is used for being arranged on aggregate in a sleeving mode; theinsulating base layer and the insulating heightening layer are arranged on the deck successively from the top to the bottom and are tightly attached to the outer wall of the insulating sleeve block, the lower side face of the insulating sleeve block and the lower side face of the insulating heightening layer are coplanar, and the insulating heightening layer is provided with a cable groove used for avoiding a cable support. According to the hull cabin internal insulation structure, the cable is installed on the cable support in the cable groove, meanwhile, the lower side face of the insulationsleeve block and the lower side face of the insulation heightening layer are coplanar, and conciseness and attractiveness are achieved. Compared with a conventional method, the hull cabin internal insulation structure and the manufacturing method thereof solve the technical problem that cables are messy and not attractive enough after the cables are installed, and meanwhile solve the technical problem that large potential safety hazards exist in messy cables.