513results about How to "Guarantee the safety of life and property" patented technology

A method for estimating anti-seismic ability of building includes integrating anti-seismic ability estimation, analysis and reinforcement of weak floor and weak unit, simplified ability chart, etc on the same software platform; utilizing man-machine interactive program to carry out quantitative estimation on anti-seismic ability of steel concrete structure for realizing anti-seismic ability estimation of building.

The invention discloses a traffic-priority-based lane change danger collision avoiding method which comprises the following steps of: acquiring running information and traffic priorities of a vehicle and surrounding vehicles; if the running vehicle is set as a vehicle M, and a vehicle running in a target lane is set as vehicle D, when the vehicle M is ready to change lane, computing the safe lane change time of the vehicle M, wherein the computed permitted maximum safe lane change time t2 is taken as a safe lane change time threshold; carrying out safe lane change time evaluation, and intervening the braking of the vehicle M or the vehicle D according to the priorities when the time is not safe enough; and computing the safe lane change time of the vehicle M again until the lane change of the vehicle M is completed. According to the invention, possible collision can be efficiently and correctly judged in real time through comprehensively analyzing and predicting state information of a plurality of vehicles; through giving direct visual prompt to drivers and performing braking intervention on the vehicles, the life safety and property safety of the drivers in the lane change process are ensured; and for the vehicles with higher traffic priorities, the prior passing of the vehicles in the running process can be ensured, and thus the traffic efficiency is ensured.

The invention discloses a health monitoring system and method for a wind generator system structure. The system provided by the invention comprises a data storage analytical device and a data collecting device, wherein the data storage analytical device and the data collecting device are communicated through a wireless signal, the data storage analytical device comprises a mechanical model analytical module, a data receiving module, a structure safety judging module, a vascular grade judging module and a vascular execution module; the data collecting device comprises a sensor group and a data transmitting module, and the sensor group is connected with the data transmission module through a wire cable; and the system judges whether the structure is damaged or not through a certain detection means and a method, the locating and evaluation of the damage are carried out to avoid the damage, thereby realizing the damage detection of a wind power generation infrastructure and health monitoring of a discriminating structure. Meanwhile, the invention also aims to provide a health monitoring method for the wind generator system structure.

The invention provides an intelligent handling system and method for elevator failure repair, which can efficiently and quickly handle elevator failures, lowers the elevator running cost and guarantees life and property safety. The intelligent handling method comprises the following steps: one-key repair or code-scanning repair is performed, wherein one-key repair is that a one-key repair button arranged in an elevator car is pressed down to send failure information including the elevator name and the like to a cloud platform through a network, and code-scanning repair is that repair QR codes are scanned with a mobile phone to be linked to the cloud platform, and then the failure information is sent to the cloud platform through the network; after receiving the failure information, the cloud platform sends the elevator position and the failure information to a property management terminal and a maintenance personnel terminal through the network; after seeing the failure information on the maintenance personnel terminal, maintenance personnel receives or refuses maintenance tasks and feeds back to the cloud platform, and if receiving the maintenance tasks, the maintenance personnel feeds the progress and handling information of the maintenance tasks through the maintenance personnel terminal; and the cloud platform sends the progress and the handling information of the maintenance tasks to the property management terminal and the maintenance personnel terminal through the network.

The invention provides a vehicle lane change conflict resolution method under a vehicle information interaction condition. The vehicle lane change conflict resolution method comprises the following steps of: judging whether a safe lane change distance is satisfied according to attitude information of a target vehicle and vehicles in front of and behind the target vehicle, and then predicting a safe lane change time range; judging whether a driver has enough time to change lane according to the habits and reaction time of the driver and by taking the safe lane change time range of the target vehicle as a conflict measuring standard, and giving 3 types of prompts to the driver; and if collision danger exists, continuously carrying out braking intervention on the vehicle so as to achieve the aim of eliminating conflict. According to the invention, the possible conflicts can be efficiently and correctly judged in real time through comprehensively analyzing and predicting the state information of a plurality of vehicles; and through giving the direct visual prompt to the driver and performing braking intervention on the vehicle, the life safety and property safety of the driver in the lane change process are ensured.

In order to solve the technical problems of difficulties in coverage and intensive monitoring to obtain accurate dynamic data, the invention provides an air / space / boat / buoy / island-reef based waters multi-sensor integrated monitoring system. In this system, the satellite SAR image passive positioning is used, an unmanned aerial vehicle (UAV) adopts a radar / image / ultrasound and other multi-sensor dedicated monitoring pod, an unmanned boat adopts a search radar / image / ultrasound / laser integrated monitoring system, the island-reef base and shore base adopt an ADS-B / AIS / radar / panoramic image / tracking image / ultrasonic / laser integrated monitoring system, a buoy / floating platform adopts a hemispherical panoramic image / laser system, an underwater vehicle adopts a multi-channel infrared CCD / ultrasonic and sonar monitoring system, a comprehensive analysis system is established at the background to obtain illegal, air and sea non-cooperation objectives on island reefs and offshore structures and comprehensive marine environmental information, and the technical problems of difficulties in coverage and intensive monitoring to obtain accurate dynamic data monitoring are solved.

The invention relates to a variable rigidity shock insulation integral intelligent support seat and belongs to the technical field of building structure shock absorption. The variable rigidity shock insulation integral intelligent support seat is characterized by comprising an upper connecting plate (1), a lower connecting plate (4), a magnetic conduction steel plate (2), a magnetorheological elastic body (3), an excitation coil (5), a magnetic conduction iron core (6), a polymer matrix composite permanent magnet material (7), a lead core (8), a conducting wire passage (9), an upper connecting screw bolt hole (10), a lower connecting screw bolt hole (11) and a driving power supply (12), wherein the a magnetorheological elastic body (3) and the magnetic conduction steel plate (2) are in a circular ring shape or a square ring shape, the excitation coil (5) and the magnetic conduction iron core (6) are arranged inside a support seat, and the polymer matrix composite permanent magnet material (7) provides a bias magnetic field for a closed magnetic circuit. The variable rigidity shock insulation integral intelligent support seat has the effects and benefits that the shock insulation and the variable rigidity are integrated, the structure is simple, the anti-interference performance is high, the two-way rigidity regulation can be realized, different horizontal rigidities can be provided for the structure according to different quake waves, and the destroy of earthquake disasters on building structures and bridge structures is effectively reduced.

The invention discloses an intelligent robot system for motor vehicle driver training. The intelligent robot system comprises an industry supervision platform, a public service platform and a training intelligent robot. Data interaction is performed through a wireless network, so that supervision, on-line examination and approval, intelligent teaching, a mock examination and process analysis are performed on the driver training industry. Working efficiency of a driver training industry department in charge is improved, teaching cost of a driving school is reduced, the training teaching process is standardized, teaching quality is improved, learning efficiency of learners can be rapidly improved, safety in the training process is improved, and a teaching program is implemented. In this way, potential traffic dangers are reduced, and social and public life and property safety is guaranteed.

The invention discloses a method and device for detecting and positioning gas pipeline leakage on line. The method mainly comprises the detecting preparation, the detecting procedures, the detecting result analysis, verification and the like based on the acoustic emission inspection technology and by summarizing laboratory tests and experience and achievements of gas pipeline leakage field tests. New specific gas pipeline leakage detecting and positioning technical details are proposed, the defects in the aspect of the application of the gas pipeline leakage detecting technology in China are overcome and supplemented, and the method and device play a positive role in promoting the detection of an urban gas pipeline net and monitoring methods, finding urban gas pipeline net leakage hidden dangers timely, preventing gas leakage from emerging, effectively preventing major urban fire and explosion risks and accelerating the transformation and wide application of the related technological achievements in engineering practice.

The invention discloses a home-based care for the aged intelligent service system. Based on a system platform, four service modes of emergency rescue, medical service, life help and active care are constructed on the basis of an elder database, a call center, a community medical center and an emergency call terminal. Relying on an intelligent service system with integration of social service resources, home-based medical care together with elderly care services including emergency rescue, medical service and life help are comprehensively provided for the aged. An informatization and intellectualization virtual nursing home operation mode with "public welfare as the premise, socialization as the basis and marketization as the supplement" is established so that continuous, healthy and rapid development of home-based medical care together with elderly care service industry is promoted.

The invention discloses a marine peril search and rescue machine vision system which comprises a control platform, a visible light subsystem, an infrared subsystem, a radar subsystem and a remote sensing subsystem, wherein the visible light subsystem is in communication connection with the control platform. The visible light subsystem comprises a visible light orthodiagraph and a visible light target detecting and tracking module, wherein the visible light target detecting and tracking module is respectively connected with the output end of the visible light orthodiagraph and the input end of the control platform. The infrared subsystem comprises an infrared detector and an infrared target detecting and tracking module, wherein the infrared target detecting and tracking module is respectively connected with the output end of the infrared detector and the input end of the control platform. The radar subsystem comprises a radar and a radar target detecting and tracking module, wherein the radar target detecting and tracking module is respectively connected with the output end of the radar and the input end of the control platform. The remote sensing subsystem comprises a remote sensing satellite, a marine peril estimating module and a ship detection module, wherein the marine peril estimating module and the ship detection module receive output of the remote sensing satellite, and the output end of the ship detection module is connected with the control platform. The marine peril search and rescue machine vision system overcomes or relieves the detects that human eyes cannot observe targets in the disadvantageous environment, improves the marine search and rescue success rate, and guarantees life and property safety of marine people.

The invention discloses a subway shield tunnel lining quality high-precision rapid vehicle detection method and apparatus. The detection apparatus comprises an image acquisition module, a ground-penetrating radar module, a multi-sensor fusion positioning module, a laser range-finding module and an industrial personal computer, the image acquisition module comprises a linear array CCD industrial camera and an LED light source, the ground-penetrating radar module comprises a ground-penetrating radar antenna and a ground-penetrating radar host, and the multi-sensor fusion positioning module comprises an inertia measuring apparatus and an encoder. The method and apparatus can be used for automation and normalization detection of the shield tunnel lining quality of existed subway lines, the power failure operation is avoided, a maintenance skylight is not occupied, normal operation of the subway is not influenced, the detection efficiency is substantially improved, the detection time of disease types and positions is greatly shortened, the damage to the tunnel lining can be eliminated in time, and the safety operation of the subway and the life and property safety of people are guaranteed.

The invention discloses an intelligent scenic spot open ecological platform based on cloud computing. The platform comprises six layers in total, namely an infrastructure service layer, a data resource service layer, an application supporting service layer, a service application service layer, an operation enforcement service layer and an information service layer. The intelligent scenic spot open ecological platform based on cloud computing realizes technical effects of comprehensive function, wide application, easy disposition, high safety, high reliability and convenient expansion. Furthermore the intelligent scenic spot open ecological platform covers total industrial links in travelling.

The invention discloses an automobile safety warning device and method based on binocular stereo vision and belongs to the safety equipment field. Binocular camera units are used for obtaining images of front vehicles and rear vehicles, a minimum distance is obtained according to calibration results and matching results of the images, comparisons between the minimum distance and a safety distance are performed, and a function of the warning of a buzzer inside the automobile and a function of LED (light-emitting diode) display warning on the tail portion of the automobile are achieved. According to the automobile safety warning device and method based on the binocular stereo vision, the binocular stereo vision distance-measuring devices have a great price advantage; the stereo vision distance-measuring method can obtain image information of an automobile and can obtain more information; besides, due to the fact that cameras, an automatic aperture technology and an automatic white balance technology are combined in usage, the automobile safety warning device and method based on the binocular stereo vision can be applied to poor visible conditions, such as at night and in tunnels. Therefore, the automobile safety warning device and method based on the binocular stereo vision has a broad prospect in field of automobile safety distance measurement.

The invention relates to a monitoring method implemented by the aid of a sleep and fatigue monitoring watch device and sleep and fatigue monitoring normalized small devices. The technical scheme includes that the monitoring method is implemented by the aid of a skin resistance sensor, a temperature sensor, a barometric pressure sensor, an acceleration sensor and a data storage chip; the sensors are connected with a core processor, and the data storage chip is connected with the core processor. The monitoring method implemented by the aid of the sleep and fatigue monitoring normalized small devices is characterized by comprising steps of continuously monitoring the skin resistance, the skin temperature, the acceleration and the barometric pressure by the aid of the personal small devices and storing original data; computing the measured data, judging computation results and outputting fatigue results and indexes. According to the technical scheme, the monitoring method has the advantages that human fatigue and sleep conditions can be continuously detected for a long time under the condition that normal work and life are unaffected, and the monitoring method brings convenience for timely monitoring and effectively feeding self conditions of people, improving the health level and the life quality of people and guaranteeing the personal life and property safety of people.

The invention discloses a method for detecting vehicle speed based on road monitoring videos. The method comprises the following steps: (1) dividing a lane using a lane marking line identification method and eliminating unnecessary background; (2) obtaining lane width information according to lane images; (3) calculating the actual distance represented by each pixel point; (4) solving the correction factor Beta which is used for correcting the actual lane distance represented by each pixel point; (5) calculating the optical flow of the vehicle to obtain the trajectory of the vehicle; (6) calculating the actual moving distance of the vehicle; (7) multiplying the correcting the distance by the correction factor to correct the distance; (8) calculating the speed. According to the invention, a video image analysis technology is adopted to decrease the cost of vehicle speed monitoring and speeding behavior recording; and in addition, the method also has the function of expanding the vehicle speed monitoring scope, and vehicle speed monitoring can be implemented at any place with cameras.

The invention discloses an online car-hailing abnormal driving environment monitoring system and method based on speech recognition. The method comprises the following steps: acquiring voice information in a vehicle after monitoring that a passenger who places an order gets on the vehicle; judging whether the behaviors of the order receiving driver and the passenger who places the order are abnormal or not according to the voice information; if yes, position information of the current position of the user terminal is obtained; obtaining the vehicle identification information of the online booked vehicle; and the acquired position information, the vehicle identification information and the acquired voice information are sent to the online car-hailing management platform, so that a manager of the online car-hailing management platform can master the occurrence condition in the online car-hailing in time, corresponding measures can be taken in time for management, and the life and property safety of passengers and drivers can be better guaranteed.

The invention relates to an elevator maintenance monitoring system. The system comprises an elevator central control cabinet, an acqusition module, a data processing module and a client, wherein the elevator central control cabinet is used for controlling operation of an elevator; the acqusition module is used for acquiring data information of each switch during maintenance of the elevator; the data processing module is used for judging whether the data information conforms to a predetermined elevator maintenance mode; the client is used for recording and displaying a maintenance result and maintenance time. The invention also relates to an elevator maintenance monitoring method. Monitoring and maintenance conditions are performed by a component of the elevator according to a specific logic time sequence and are automatically transmitted to the client through the data acqusition equipment to help relevant administrative departments to accurately supervise whether the elevator is timely repaired or maintained according to quality, so that relevant elevator, maintenance organization and maintenance worker are effectively managed, further the potential safety hazard for operation of the elevator is eliminated, and the life and property safety of people is guaranteed.

The invention discloses an accumulator car facility. The accumulator car facility comprises a charging box body and a charging gun which is jacked into the charging box body to be connected with the charging box body in a matched mode. A hook is fixedly arranged on the left side of the charging box body, and a hanging slot is formed between the hook and the charging box body. An inner end slot stretching left and right is formed in the charging box body, and a jacking slot communicates with the right end of the inner end slot and the exterior of the charging box body. A partition plate fixedly connected with the charging box body is arranged on the position, located above the jacking slot, of the right end of the inner end slot, and an open hole upwards stretching is formed in the partition plate. According to the accumulator car facility, the overall structure is simple, production cost is low, power supplying is safe and stable, running operation is easy, the electric shock accident in existing lives is effectively reduced, life and property safety of people is guaranteed, occurrence of the accumulator car power outage accident caused by error kick and error collision can be avoided, the service life of the accumulator car facility is effectively protected, and the accumulator car facility is suitable for being used and popularized.

The invention discloses an underground pipeline marking and real-time depth measurement system, belongs to the field of pipeline marking and depth measurement, and provides a marking and measuring system capable of measuring depth of underground pipelines and surrounding conditions in real time. The system comprises a pipeline, a mark belt paved above the pipeline and a detecting instrument, a layer of aluminum foil is packaged inside the mark belt, an electronic marker is arranged on the mark belt, an RFID (radio frequency identification) electronic tag is arranged inside the electronic marker, and the detecting instrument comprises a radio frequency module, a radar detection module, a data processing module and a display module; the radio frequency module and the radar detection module are connected with the data processing module, and the radio frequency module and radar detection module run independently; a radio frequency module and radar detection module switch is arranged on the detecting instrument. The system can mark the underground pipeline and measure and display the current buried depth of the underground pipeline in real time, the measurement process is simpler and more feasible, manpower and material input for measurement is saved, and detection cost is reduced.

The invention relates to a transmission and distribution line state intelligent diagnosis method and a device thereof. When the transmission and distribution line suffers from a short circuit fault, a circuit breaker trips to trigger a control device, a closing circuit is locked immediately, a line state sensor is started to detect the insulation state against ground of each phase, i.e. the rehabilitation conditions of the fault-phase insulating resister Rm of the transmission and distribution line are detected, the fault-phase insulating resister Rm is compared with the set insulation value Rj, and when the Rm is smaller than the Rj, the closing circuit is continued to be locked; and when the Rm is larger than the Rj, the closing circuit is switched on. The transmission and distribution line state intelligent diagnosis device comprises a main controlling unit, a comparison controller and a line state sensor. The invention relates to the transmission and distribution line state intelligent diagnosis and the device with a simple and compact structure, low cost, good reliability, convenient installation, simple and easy operation and better security.

The invention provides a rigidity-variable vibration-isolating support seat, comprising an upper support seat, a lower support seat, an upper connecting plate and a lower connecting plate, wherein the horizontal size of the lower support seat is greater than that of the upper support seat; the upper connecting plate is fixedly connected with an upper building; the lower connecting plate is fixedly connected with a lower building; the upper support seat is fixedly connected with the upper connecting plate; the lower support seat is fixedly connected with the lower connecting plate; the upper support seat is connected with the lower support seat through an intermediate separating plate; a limiting device is sleeved on the upper support seat; the upper end of the limiting device is fixedly connected with the upper connecting plate; the lower end of the limiting device is lower than the intermediate separating plate; and a clearance is reserved between the lower end of the limiting device and the intermediate separating plate. The rigidity-variable vibration-isolating support seat can provide different horizontal rigidities and damping forces in different forced states, can meet the vibration isolation and shock absorbing requirements on intermediate-high layer buildings when encountering earthquakes in different grades and guarantee the safety of people and property.

The invention relates to a fire extinguishing device, in particular to a wind power and water power combined fire extinguishing device for fire protection and aims to achieve the technical effect of providing the wind power and water power combined fire extinguishing device for fire protection which is diversified in fire extinguishing manner, thorough in fire extinguishing and high in speed. To achieve the technical effect, the wind power and water power combined fire extinguishing device for fire protection comprises a rack, a sliding rail, a mobile plate, a water pump, a gear, a rotary motor, a cart, an air discharging pipe, a pipe, an air pump, a spray head, a first water feeding pipe, a second water feeding pipe and the like; and the right side of the top of a water tank is provided with the second water feeding pipe, the water tank is internally provided with the water pump, the right side of the water pump is provided with the first water feeding pipe, and the first water feeding pipe penetrates through the water tank. By means of the wind power and water power combined fire extinguishing device for fire protection, the effects that the fire extinguishing manners are diversified, fire extinguishing is thorough, and the speed is high are achieved, rapid fire extinguishing can be achieved through the device, a manner of combining wind power and water power is adopted for the device, and fire extinguishing time can be saved.

The invention relates to an emergency device used after an airplane fails, in particular to an airplane emergency landing device. The emergency landing device comprises an airplane urn entering device, a combined retarding device and a stumbling rope device. When the airplane is landed on a landing buffering mattress, the mattress is sunken, anti-rebound protective covers distributed at the four sides of the mattress are unfolded to the center of the mattress, magnets on the anti-rebound protective covers are attracted to the fuselage, the fuselage is locked by hasps on the anti-rebound protective covers, and the airplane cannot bounce through the airplane urn entering device. The combined retarding device comprises a spring buffering mechanism, a hydraulic actuating cylinder pressure reducing mechanism and a damping block pressure reducing mechanism, and plays multiple roles in buffering and reducing the pressure of the emergency landing device. Through the airplane emergency landing device, the airplane can be safely landed when an undercarriage fails in the air, so that the life and property safety of passengers is ensured. Meanwhile, a new landing mode is created, the emergency landing device can be used for short-distance landing of a fighter and even a transport plane, and the manufacturing cost of an aircraft carrier is reduced.

The invention provides a girder-falling prevention device. The device is arranged on a bridge girder base body and comprises a fixed guide rail, a fixed device and an elastic-plastic device, wherein the fixed guide rail is connected with a bridge girder body; the fixed device is connected with the base body; and the elastic-plastic device comprises a first end in clearance fit with the fixed guide rail and a second end connected with the fixed device. The device has the following advantages that: the device has a simple and reliable structure, is clear in force transferring and bearing and can achieve the effects of preventing girder from falling, dissipating seismic energy and resisting drawing, thus protecting the bridge girder in multiple directions, reducing seismic damage on the bridge girder and guaranteeing life and property safety.

The invention relates to a portable gas alarm system with a wireless communication function, which comprises a gas detecting terminal and an information processing device. The gas detecting terminal is provided with a wireless data transmitting device and a wireless data transmitting antenna, and the information processing device is provided with a central processing unit, a power supply, a control module and a wireless data receiving device, wherein the power supply, the control module and the wireless data receiving device are connected with the central processing unit, and the wireless data transmitting device is used with the wireless data receiving device. The portable gas alarm system is used for wirelessly transmitting on-site gas monitoring data to a specified remote wireless receiving device to realize remote gas monitoring function.

The present invention provides a fire hydrant water pressure remote monitoring system based on a low-power internet of things. The system comprises a wireless water pressure monitoring node, a wireless internet-of-things base station, a cloud server, a fire hydrant information platform and a polling terminal. The wireless water pressure monitoring node is installed on a fire hydrant valve to perform low-power collection of fire hydrant water pressure data in a wide range and transmit data to the wireless internet-of-things base station in a wireless mode. The wireless internet-of-things base station receives water pressure data sent by the wireless water pressure monitoring node and transmits the data to the cloud server through the Internet. The fire hydrant information platform can receives alarm prompt of abnormal fire hydrant water pressure point position of the fire hydrant and distributes maintenance tasks to polling personnel, and the polling personnel receives tasks through the polling terminal and reports a maintenance feedback list to the fire hydrant information platform. The present invention provides a fire hydrant water pressure monitoring system with wide monitoring range, low power, convenient networking and efficient polling.

The invention discloses a safe lockable power supply plug-in device, which comprises a socket body arranged on the wall and a plug body connected with the socket body by plugging and mating. The rear end surface of the plug body is symmetrically provided with two posts on the left and right sides of the plug, each of the two posts is provided with a locking groove and the two locking grooves are arranged oppositely, and the socket A power supply hole is provided in the middle of the front face of the body for the insertion and connection of the plug. The socket body is provided with an accommodation cavity. The overall structure of the present invention is simple, and the power supply stability is good, which reduces electric shock accidents in existing life. The occurrence of the occurrence effectively guarantees the safety of people's life and property, and the operation of the whole device can be realized by a single motor, the structure setting is very reasonable, the operation is relatively simple and convenient, and it is suitable for popularization and use.

The invention relates to a motor train unit head train passive safety protection device which comprises coupler and draft gear components, anti-creeper components and a main energy absorber component, wherein the main energy absorber component is mounted at the front end of a head train body bumper rail, the coupler and draft gear components are arranged in the front of the main energy absorber component and mounted on guard plates of two sides of the front end of the head train body bumper rail, and the anti-creeper components are arranged on two sides of the guard plates. The protection device is simple in structure, reasonable in layout and high in reliability, energy can be sufficiently and reasonably absorbed when a train collides, life and property safety of passengers is guaranteed, and structural integrality of a rail train body is furthest maintained.

The invention relates to an emergency prevention and control system. The system comprises a management server, and multiple monitoring terminals and multiple control terminals communicated with the management server; the monitoring terminals comprise a processor, a camera, a memorizer, a digital pickup and an alarming button which are connected with the processor; the processor comprises a comparison module and an alarming module, wherein the comparison module is used for comparing the video information collected by the camera with a preset event element in the memorizer, and sending an alarming instruction to the alarming module if detecting the same preset event element; the alarming module forms the alarming information with monitoring terminal number information for giving out the alarming information, the alarming information is sent to the management server; the alarming button is connected with the alarming module; the management server sends video-recording and audio-recordinginstructions to the camera and the digital pick-up of the monitoring terminal after verifying the alarming; a human-vehicle feature fast collection module sends a fast collection instruction. The emergency prevention and control system disclosed by the invention integrates multiple application technologies, is good for the police and beneficial to the people.