43 results about "Transportation security" patented technology

The invention discloses a multi-role collaborative transportation safety management and responsibility tracing method and system. The method comprises the following steps: S1, reporting an event, collecting travel data, identifying a security event through AI, and generating a unique event number for associated storage; s2, role and flow distribution: grading based on event information, determining participation roles by means of a built-in rule engine, and generating a processing flow and a task list containing logic association through a workflow engine; s3, multi-role cooperative processing and recording are carried out, the roles are operated according to a list, and the system automatically records the operation and forms a corresponding event processing chain; and S4, automatic responsibility tracing: based on the processing chain, generating a responsibility chain and a responsibility affiliation result through a hybrid mechanism. The system comprises a database, an event report and other functional modules for supporting the method. According to the invention, full-process closed-loop management from event grading and role allocation to cooperative processing and automatic tracing is realized, and the problems of low efficiency and difficult responsibility determination of multi-role cooperation are solved.

The invention provides a radioactive substance transportation monitoring system, and relates to the technical field of radioactive substance transportation safety monitoring. The radioactive substance transportation monitoring system comprises a transfer protection box and a monitoring unit integrated on the transfer protection box, and the monitoring unit is composed of a double-detector fusion module, a three-dimensional data linkage analysis module and an active emergency disposal module which are sequentially connected through a circuit. The double-detector fusion module comprises a GM counting tube and a scintillator detector which are arranged inside and outside the box so as to realize alpha, beta, gamma and neutron multi-nuclide coverage; the three-dimensional data linkage analysis module performs comprehensive judgment based on internal and external doses of the box, temperature and humidity and vibration data, and accurately identifies protection failure or article leakage; and the active emergency disposal module automatically starts gate closing and adsorption measures in an emergency. According to the system, the problems of monitoring blind areas, reduced protection performance, frequent false alarm, emergency passivity and the like are solved, and the transportation safety and the intelligent level are improved.

The invention relates to a safe and energy-saving multifunctional eye cream massage instrument control circuit, which comprises a heating / refrigerating module, a power supply module, a power supply module and a control module, and is characterized in that the heating / refrigerating module comprises a DC-DC circuit and an H-bridge circuit; the vibration module comprises a motor control circuit and is used for providing a vibration effect for the eye cream massage end; the control circuit module comprises a charging circuit, a main control circuit and a temperature detection circuit; the input end of the charging circuit is connected with the charging interface, and the output end of the charging circuit provides working voltage for the main control circuit, the temperature detection circuit, the motor control circuit and the DC-DC circuit. The master control circuit comprises a power-off circuit and a second control chip U2. According to the safe and energy-saving multifunctional eye cream massage instrument control circuit, a lithium battery power supply is completely disconnected during standby, zero power consumption is achieved during standby, transportation safety is guaranteed, and factory electric quantity is kept to be used by a user for the first time.

The utility model relates to the technical field of semiconductor packaging module discloses a semiconductor packaging module with elastic buffer protection structure, including shell one, the both sides of shell one inner wall all rotatory connection have knob, the knob bottom all have shell two through buckle assembly connection, to be used for the dismounting between shell one and shell two, shell one and shell two inner wall all sliding connection have clamping plate, the inner wall of clamping plate all is linked with shell one and shell two through buffer assembly, to be used for the semiconductor buffer protection of clamping. In the utility model, through being provided with buffer assembly in shell one and shell two inside, through double elastic buffer enhancement to the protection of semiconductor, effectively absorb the vibration and impact in transportation, avoid pin deformation, circuit damage, can adapt to different specifications module simultaneously, reduce the demand of customization, reduce the logistics cost, still can pass through two -way clamping and promote module fixed stability, guarantee transportation safety and efficiency.

The application discloses a mine transportation safety self-adaptive optimization system and method based on video monitoring and belongs to the technical field of real-time optimization. The application utilizes various sensors to sense the environment in a monitoring area to obtain multi-source environment data in the monitoring area; analyzes and processes the environment sensed by the sensors to extract features of the environment in the monitoring area to obtain first features of the monitoring area; analyzes the environment in the monitoring area to calculate an abnormal environment index in the monitoring area to realize hierarchical early warning of the abnormal environment in the monitoring area; utilizes the first features in the monitoring area obtained by calculation to perform machine learning to construct an abnormal early warning model; analyzes the environment during early warning to extract second features of the monitoring area; calculates linear features of the first features and the second features to realize real-time optimization of early warning classification according to the linear features of the first features and the second features obtained by calculation.

The utility model provides an intelligent organ transfer system. The system is composed of an organ transfer box, a control unit, a ground 5G base station, a transfer unmanned aerial vehicle and a communication satellite. The control unit can communicate with the transfer unmanned aerial vehicle through a ground 5G base station or a communication satellite and can also communicate with a ground mechanism at the same time. A microprocessor and a plurality of functional modules, such as a key module, an image recognition module and various sensors, are integrated in the device. The transfer unmanned aerial vehicle is provided with an anti-collision radar, an anti-explosion shell and a stealth coating, and is further provided with a 360-degree panoramic camera, so that the transportation safety can be guaranteed, and the transfer process can be recorded. Environmental parameters in the transfer process are monitored in real time through the sensors, and an alarm is given through the audible and visual alarm when abnormity occurs. The image recognition module adopts a face recognition camera module, password input is combined with the key module, and opening safety of the transfer box is guaranteed. The system effectively solves the problem of organ transfer in a complex environment, ensures safe and efficient organ transfer, and improves the success rate of organ transplantation.

The present invention relates to a transport safe device for thermal energy storage and a method for providing such a device, wherein the method comprises: providing at least one piece of phase change material having a PCM melting point; providing a container having a protective coating provided on the inner walls thereof, wherein said protective coating is made from a material having a protective coating melting point that is higher than the PCM melting point; providing a temporary protective coating on the at least one piece of phase change material or on the protective coating on the inner walls of the container, wherein the temporary protective coating has a melting point that is equal to or lower than the PCM melting point; inserting the at least one piece of phase change material into the container.

A carbon dioxide pipeline leakage monitoring system disclosed by the present invention comprises a main pipeline, a plurality of buried pipes, a box body, a temperature monitoring optical cable and a control system, the main pipeline is provided with a gas injection port for injecting carbon dioxide, the buried pipes are connected with the main pipeline, the buried pipes are provided with buried sections, the buried sections are provided with leakage holes, and the box body is provided with a soil filling cavity for filling soil. The buried pipe penetrates through the box wall of the box body so that the leakage hole of the buried section can be located in the soil filling cavity, the temperature monitoring optical cable is arranged in the soil filling cavity and laid around the buried section, the temperature monitoring optical cable is connected with the control system, and the control system is used for collecting temperature data monitored by the temperature monitoring optical cable. According to the carbon dioxide pipeline leakage monitoring system, the diffusion process after carbon dioxide pipeline transportation leakage can be simulated, temperature-time change curves of leakage points in different directions and at different distances are obtained through the temperature monitoring optical cable, and data support is provided for transportation safety design of carbon dioxide.

The application relates to the technical field of explosive and oil-gas explosion experiment, in particular to a device for studying explosive and oil-gas explosion coupling effect, and the experimental research equipment comprises a filling cavity for accommodating mixed oil-gas and explosive, one end of the filling cavity is sealed and blocked and provided with a film, a second detection device for detecting explosion shock wave conduction waveform is arranged between the explosive and the film, and a first detection device for detecting explosion conduction waveform and pressure is arranged on the outer wall of the filling cavity. Beneficial effects: the device with the detection device and the fan is arranged, so that the simulation of explosive and oil-gas explosion coupling is detected, various data generated in the coupling process are detected, the power and the destructive power generated by explosion can be accurately analyzed, targeted protection can be made, and oil-gas transportation safety is improved.

The invention provides a storage and transportation box for new energy batteries, and mainly relates to the technical field of battery transportation. The storage and transportation box for the new energy batteries comprises a box body, a supporting assembly and a battery box, the supporting assembly is fixedly installed in the box body, a buffering air bag is fixedly arranged on the inner side of the box body, a plurality of installation gaps are formed in the buffering air bag, the supporting assembly comprises a supporting frame, and hydraulic damping devices are arranged at the upper end and the lower end of the supporting frame. A limiting groove is formed in the middle of the supporting frame, a plurality of containing cavities are formed in one side in the supporting frame, clamping jaws are rotationally installed in the containing cavities, and a torsion box is arranged on one sides of the clamping jaws. The battery box has the beneficial effects that the positions of batteries at different depths in the box body can be very conveniently fixed through the exquisite structural design, and the batteries are convenient to take and place; when a traffic accident occurs, the impact force on the battery can be effectively buffered, and the storage and transportation safety of the battery is improved to the maximum extent.

The invention discloses a method for detecting a drivable area matched with a mine scene, and relates to the field of image detection and segmentation. According to the method, an input image is processed by constructing a semantic segmentation detection model, and a lightweight encoder, a multi-scale feature fusion module and a multi-attention decoder are included. The encoder adopts an optimized MobileNetV3 backbone network, and optimization is carried out through dynamic step length depth separable convolution design and mine scene channel pruning; the decoder integrates a two-dimensional attention enhancement module M-DAM and an SE channel attention module, two-dimensional weighted suppression of interferent features is achieved, and effective features are enhanced. Experiments show that the method realizes the detection rate of 22.45 FPS on a mine data set, the average intersection-to-parallel ratio reaches 0.7008, the requirements of light weight and low computing power, high precision and strong real-time performance are considered, the problems of fragmentation and boundary fuzziness of traditional model segmentation are effectively solved, and the transportation safety requirement of a mine unstructured road scene is met.

The utility model relates to a band-sawing machine, in particular to a working lamp structure of a band-sawing machine, which comprises a band-sawing machine saw frame, a working lamp front body is mounted on the outer side wall of the band-sawing machine saw frame, a working lamp rear body is mounted on the inner side wall of the band-sawing machine saw frame, and the working lamp front body is fixedly connected with the working lamp rear body. The working lamp front body comprises a fixing plate, two first mounting holes, a first bolt and a male plug, the fixing plate is fixedly mounted on the outer side wall of the saw frame of the band-sawing machine, the two first mounting holes are formed in the fixing plate, the first bolt is fixedly mounted in the first mounting holes, and the first bolt is in threaded connection with the outer side wall of the saw frame of the band-sawing machine. The packaging box is easy and convenient to operate and maintain, the packaging process is simplified, the packaging cost is reduced, and meanwhile the transportation safety and convenience of products are improved.

The utility model discloses a novel GGD power distribution cabinet which comprises a header, a front door plate, a frame and a rear door plate, the frame comprises a plurality of cross beams, a plurality of vertical columns, a plurality of middle columns, a plurality of installation side cross beams and a plurality of G-shaped beams, and two ends of the cross beam at the topmost end of the frame are fixedly connected with the vertical columns through connecting pieces A; the two ends of the cross beam located at the bottom of the frame are fixedly connected with the vertical stand column and the G-shaped beam through vertical stand column connecting pieces. The middle of the cross beam at the bottom of the frame is simultaneously fixedly connected with the middle upright and the bottom beam through middle upright connecting pieces; through the combined connection mode of the connecting piece A, the vertical stand column connecting piece and the middle stand column connecting piece, welding-free rapid assembly of the frame is achieved, and labor and equipment cost is reduced; through the specially-made G-shaped beam and the design of cabinet splicing hole sites compatible with the MNS cabinet, seamless cabinet splicing with an existing cabinet is ensured, and the field installation efficiency is improved; the hoisting rings are matched with the gravity center of the frame to further guarantee transportation safety.

The graphite paper transfer box comprises a transfer box body, a positioning assembly and a scratch-resistant cleaning assembly, the positioning assembly comprises an arc-shaped strip, the bottom of the arc-shaped strip is fixedly connected to the top of the transfer box body, a round frame is fixedly connected to the top of the transfer box body, an inflation air bag is fixedly connected to the top of the transfer box body, and the inflation air bag is fixedly connected to the bottom of the arc-shaped strip. The inflatable air bag is located in the round frame, the surface of the inflatable air bag is communicated with an exhaust pipe, the front side of the exhaust pipe penetrates through the surface of the round frame, the surface of the inflatable air bag is communicated with a connecting pipe, the bottom of the connecting pipe penetrates through the surface of the round frame and is communicated with a pressing ball, and the top of the inflatable air bag is fixedly connected with an elastic cushion. The graphite paper is positioned through the positioning assembly, when the transfer box is not filled with the graphite paper, a gap exists between the graphite paper and the transfer box, damage caused by collision between the graphite paper and the transfer box is avoided, and the transportation safety is high.

The utility model provides an alcohol substance storage tank, which relates to the technical field of storage tanks and comprises a shell and a guardrail module, a polyurea coating, a filling port and a liquid level display module are arranged on the shell, the liquid level display module comprises a sleeve, a floating ball and a window, and the guardrail module is provided with at least one flat surface, so that the shell can be stably placed. The guardrail module comprises at least two groups of sub-modules, the sub-modules are connected through connecting pieces to form the guardrail module, and the guardrail module is used for being installed on the shell to achieve the anti-rolling effect. The outer surface of the shell is provided with the polyurea coating, and the polyurea coating has the functions of insulating heat, enhancing the material strength and preventing explosion, so that the transportation safety is improved; a liquid level display module is arranged, so that the internal filling condition is more visual; the guardrail module is installed on the shell, so that the rolling prevention effect is achieved, the storage tank is changed into a square shape from a round shape, and effective isolation is achieved in the stacking and carrying processes.

This invention discloses a drivable area detection method adapted to mining scenes, belonging to the field of image detection and segmentation. The method processes the input image by constructing a semantic segmentation detection model, including a lightweight encoder, a multi-scale feature fusion module, and a multi-attention decoder. The encoder uses an optimized MobileNetV3 backbone network, optimized through dynamic stride depth-separable convolution design and mining scene channel pruning; the decoder integrates a dual-dimensional enhanced attention module (M-DAM) and an SE channel attention module, using dual-dimensional weighted suppression of interfering features and enhancement of effective features. Experiments show that this method achieves a detection rate of 22.45 FPS on a mining dataset, with an average intersection-over-union ratio of 0.7008, balancing lightweight and low computational requirements with high accuracy and strong real-time performance. It effectively solves the fragmentation and boundary blurring problems of traditional models, adapting to the transportation safety requirements of unstructured road scenes in mines.

The utility model provides an industrial transfer robot which comprises a robot body (1), the robot body (1) is arranged on the ground through bottom rotating wheels, and a platen (2) used for bearing workpieces is fixedly arranged at the top of the robot body (1). The robot is characterized in that an intercepting device (3) is arranged at the top of the robot body (1) and close to the outer edge of the platen (2) through a fixing assembly (4), and the size of the intercepting device (3) in the front-back direction can be adjusted according to needs; by arranging the intercepting device, the workpiece placed on the table plate can be intercepted and protected, the possibility that the workpiece slides or inclines unexpectedly due to external force touch, marching jolting and the like, and then the workpiece falls off and is damaged unexpectedly is reduced, and therefore the workpiece placing stability and transportation safety are improved.

The invention discloses a data-driven intelligent identification method for corrosion failure causes in a steel oil and gas pipeline, and relates to the technical field of identification of corrosion failure causes in steel pipelines in ground engineering. Modules of data preprocessing, multi-dimensional feature extraction, self-adaptive model selection, corrosion cause intelligent identification, protection countermeasure recommendation and the like are covered, a machine learning algorithm is utilized to analyze a single / multi-factor coupling action mechanism of temperature, pressure, media and the like, the limitation of traditional manual analysis is broken through, rapid and objective identification of internal corrosion causes is realized, and the accuracy of internal corrosion analysis is improved. According to the method, the pipeline integrity management efficiency is remarkably improved, intelligent technical support is provided for oil and gas transportation safety, and the method is suitable for corrosion failure prediction and prevention and control scenes under multi-factor complex working conditions.

The invention relates to the technical field of dangerous chemical transportation safety monitoring, in particular to a dangerous chemical storage tank leakage detection device, a medium and electronic equipment, which comprises physical monitoring equipment arranged at a storage tank part and a control device in communication connection with the physical monitoring equipment, the physical monitoring equipment comprises an infrared thermal imaging high-definition video acquisition unit and a photoacoustic spectrometry gas sensing array. The control device integrates a data preprocessing module, a visual feature extraction module, a gas concentration feature extraction module, a spatio-temporal context sensing module, a self-adaptive decision fusion module, a digital twin simulation module and a linkage control execution module, and through multi-source data spatio-temporal alignment and fusion analysis, physical model simulation verification is combined. And intelligent identification and grading response of leakage characteristics are realized. The defect of false alarm caused by isolation of video and gas data in an existing detection method is effectively overcome, and the accuracy and reliability of leakage detection in a complex transportation environment are remarkably improved.

The system provides real-time safety scores for motor carriers, accurately predicts future safety scores, and allows users to simulate various safety scenarios. Users can input data and perform complex calculations, ensuring accurate and timely updates of safety scores. The system's efficiency lies in accumulating and analyzing extensive data, leading to more precise predictions of future safety scores. The calculated, predicted, or simulated safety scores are presented on diverse devices such as desktop computers, mobile phones, or other compatible devices.

The invention belongs to the technical field of water traffic transportation safety and navigation aid, and mainly relates to an information broadcasting system based on a beacon vessel carrier, which realizes intelligent information broadcasting on the beacon vessel carrier by integrating an AIS data acquisition module, a millimeter wave radar, VHF broadcasting equipment and other hardware and combining edge calculation. A ship identity matching and broadcast content association mechanism is adopted, so that the pertinence and the effective receiving rate of information broadcast are improved; a VHF channel occupation monitoring and automatic switching technology is introduced, so that the reliability of information is ensured; a hierarchical broadcasting strategy is adopted, and based on real-time triggering of broadcasting contents of different levels between a ship and a navigation mark, the timeliness of information is improved; through linkage of radar and AIS data, emergency early warning is triggered, and field evidence is generated; the power supply self-adaptive management module ensures continuous operation of key functions by dynamically adjusting a power supply mode; and the precision and the security of navigation mark information service are obviously improved.

The invention relates to a container damage detection method fusing hierarchical cross validation and category enhancement, and belongs to the technical field of container transportation safety detection. In order to solve the problems that in the prior art, data set categories are unbalanced, scarce categories are difficult to detect, and a traditional dichotomy model is prone to failure due to the fact that no damaged sample exists, a technical system is constructed through an improved YOLOv8 model of category-oriented differentiated data enhancement, hierarchical multi-fold cross validation, an anchor frame free architecture and category weighted Focal Loss and a task fusion strategy. The core of the method is to balance sample distribution, improve evaluation reliability and detection precision, and derive a dichotomy conclusion through a damage detection result. The method is suitable for scenes such as ports, storage yards and the like, can realize accurate positioning and classification of container damage and judgment of damage, and meets industrial automatic detection requirements.

This invention discloses an intelligent scheduling method for pet transport resources under a closed-loop model based on knowledge graphs, belonging to the field of intelligent scheduling technology. This invention improves the accuracy of stress risk prediction and the coverage dimension of multi-species co-transport compatibility analysis during the pet transport resource scheduling process, thereby achieving efficient and accurate path resource adaptation and scheduling scheme generation under welfare constraints. It significantly improves the transportation safety and scheduling resource utilization efficiency during the pet transport process, effectively preventing insufficient response of fixed co-transport rules to actual species compatibility changes, avoiding missed detection of co-transport conflicts and pet stress injuries caused by experience-based judgments, realizing intelligent configuration and differentiated investment of emergency transport resources, continuously optimizing the semantic reasoning accuracy of the pet transport knowledge graph, and ensuring a high degree of consistency between the scheduling decision model after closed-loop iterative updates and the actual pet transport stress risks.

The utility model provides a universal turnover tray for an optical module assembly, which comprises a tray body, and supporting strips are clamped on the tray body. According to the universal turnover tray for the optical module assembly, by arranging the fence, the protrusions, the grooves, the anti-skid layer, the buffer protection layer, the supporting strips, the buckles and other structures, the fence prevents the optical module assembly from sliding off from the edge of the tray, and transportation safety is guaranteed; the bulges are matched with the grooves, so that the tray is stacked stably and is convenient to carry and store; the anti-skid layer increases friction force, and sliding of the supporting strips during adjustment and displacement of the optical module during transportation are avoided; the buffer protection layer absorbs impact in all directions and prevents the optical module from being damaged due to collision and vibration; the supporting strips are matched with the buckles and can be flexibly adjusted to adapt to different optical modules and provide stable supporting, the structures have a synergistic effect, the universality, stability and safety of the turnover tray are greatly improved, and the diversified requirements for turnover of optical module assemblies are effectively met.

The utility model discloses a portable stem cell sample transport case which comprises a case body with a liquid nitrogen freezing function, a moving mechanism, a storage drawer and a limiting assembly, the bottom of the case body is provided with the moving mechanism, moving wheels are driven by a motor to ascend and descend, flexible moving and stable placing are facilitated, and the storage drawer is connected into the case body in a sliding mode and locked through the limiting assembly. The stem cell sample transportation box is reasonable in design, compact in structure and convenient to carry and move, meanwhile, a low-temperature freezing environment is provided, the stem cell samples are effectively protected against damage, and the stem cell sample transportation box is particularly suitable for transportation requirements of multi-batch stem cell samples stored in a classified mode.

The invention provides a logistics transportation safety compliance multi-mode automatic detection system and method, and relates to the technical field of visual identification, and the method comprises the steps: S1, receiving a to-be-detected image uploaded by a client and associated task identification information; s2, according to the task identification information, a corresponding dynamic cue word template is matched and obtained from a rule configuration library, the dynamic cue word template defines at least two virtual roles with a strict execution sequence and task logics of the virtual roles in a text form, and the virtual roles comprise a first anti-counterfeiting verification role and a second business compliance reasoning role; s3, inputting the to-be-detected image and the cue word packaged with the first anti-counterfeiting verification role task into a multi-modal large language model; the cue word instructs the multi-modal large language model to play a first anti-counterfeiting verification role, and executes a task of identifying whether the image contains an anti-counterfeiting watermark in a preset format or not. The beneficial effects of the invention are that the method is high in data authenticity, is very low in maintenance cost, and facilitates the improvement of the accuracy.

The invention relates to the technical field of safety management of dangerous goods, in particular to an intelligent management system for the flow direction of fireworks and crackers. Comprising a detection module, a process module, an information module and a supervision module. The detection module is used for data management and identity authentication; the flow module is used for processing fireworks and crackers; the information module is used for recording information of fireworks and checking the number of the fireworks; the information module comprises a terminal module and a data docking module; the terminal module is used for collecting or reading firework product information; the data docking module is used for sharing information with an external information platform; and the supervision module is used for querying the firework data and performing early warning. According to the intelligent management system for the flow direction of fireworks and crackers provided by the invention, transparent information management on the flow direction and selling of fireworks and crackers can be realized through cooperation of a plurality of modules, and later product tracing and transportation safety providing are facilitated.

The invention belongs to the technical field of traffic transportation safety, and discloses a drunk driving prevention and early warning system integrated with an AI algorithm, and the system comprises the steps: collecting the multi-mode state data of a driver; identifying a compensatory prudent operation mode of the driver based on the multi-modal state data and extracting a hidden risk indicator; according to the historical multi-mode state data and the current compensatory prudent operation mode, the alcohol influence potential vulnerability of the driver is evaluated; generating a personalized early warning intervention scheme based on the hidden risk index, the current compensatory cautious operation mode and the alcohol influence potential vulnerability; according to a personalized early warning intervention scheme, drunk driving prevention and early warning of the driver are realized; and the safety of road driving is greatly improved.

The invention discloses a tool storage platform multi-type module intelligent hanging, assembling and conveying system, and relates to the technical field of industrial automation equipment, and the system comprises a tool identity state collection module which integrates various equipment collection tool information; the dynamic storage position adaptation module screens the optimal storage position according to the collected data and adjusts the inclination angle; the intelligent suspension transportation module can transport tools and avoid obstacles; the precise docking and unlocking module completes docking and unlocking; the full-process data linkage control module gathers data, distributes instructions and collaborates processes, and efficient collaborative operation of all the modules is achieved. The multi-element sensing assembly is integrated, the optimal storage position is dynamically matched and screened, the bearing structure is adjusted, the storage adaptation problem is solved, and the space utilization rate is increased; a closed-loop type transportation structure guarantees transportation safety, a three-axis fine adjustment mechanism and the like guarantee accurate butt joint, a whole-process data linkage control module carries out overall operation, errors are reduced, an automatic scene is adapted, and operation mode transformation is promoted.

An anomaly and object recognition system configured to scale connected transportation security equipment in order to support different screening needs at ports of entry and provide a robust failsafe approach. The system may be configured to determine anomalies while maintaining privacy of passengers and their baggage. The system may leverage a suite of algorithms to analyze the subset of data identified by the anomaly detection algorithm. The system may adhere to various cybersecurity standards in part by limiting data shared with remote screening terminals.