41results about How to "Troubleshoot in time" patented technology

The invention discloses an M2M (Machine-to-Machine) terminal, and a system and method for M2M terminal remote management. The M2M terminal comprises the following modules: a CDMA (Code Division Multiple Access) network access module for realizing the physical access of a CDMA network via a radio frequency circuit and a base band circuit; a communication function module for realizing switching of voice and data based on the CDMA network; a communication management module for providing an access interface with a communication function for the service logic of the M2M terminal to realize access control and link management; a data processing module for carrying out analysis and logical operation on the acquired peripheral data and outputting a control instruction; a service management module for coordinating with the communication management module and the data processing module to realize the service logic function of the M2M terminal; and a terminal management module for realizing local and remote management on the M2M terminal based on an application layer interface protocol. Through the invention, the remote centralized management on the M2M terminal can be realized, and the requirements of real-time monitoring and timely trouble removal for the M2M terminal are satisfied; and operations and marketing development of the M2M application system are benefited.

The invention provides a method, a server based on zabbix monitoring alarm, equipment and a storage medium. The method comprises the steps of deploying zabbix agents on all monitoring nodes of a distributed system, starting all zabbix servers, and establishing communication connection between the zabbix servers and the zabbix agents deployed on all the monitoring nodes; acquiring the load information and the operation state of each monitoring node from each monitoring node through the zabbix agent; generating a visual graph from the load information and the operation state of each monitoring node, and generating alarm information when determining that the current load information and the operation state of the target monitoring node meet the alarm rule according to the visual graph and a predefined alarm rule; and determining an alarm level of the alarm information, determining a target notification channel corresponding to the alarm level, and sending the alarm information to the target notification channel. By adopting the scheme, the working efficiency and the real-time performance of monitoring can be improved.

The invention discloses a fully-automatic round-head barrel hook forming machine belonging to the field of wire bending machines. The fully-automatic round-head barrel hook forming machine comprises a steel wire feeding device, a handle tube feeding device, a forming device, a fetching and shaping device and a control system, wherein the handle tube feeding device is arranged in front of the forming device; the steel wire feeding device is arranged at the rear of the forming device; the fetching and shaping device is arranged in front of the forming device, is located below the handle tube feeding device and is composed of a grabbing mechanism, a locating mechanism and a shaping mechanism; and all the steel wire feeding device, the handle tube feeding device, the forming device and the fetching and shaping device are automatically controlled by the control system to sequentially finish the actions of handle tube feeding, steel wire feeding, barrel hook forming as well as fetching and shaping. By using the fully-automatic round-head barrel hook forming machine, a barrel hook not only can be fully-automatically produced, but also can be corrected and shaped after being formed to make preparation for the next installation of the barrel hook, so that the requirement of an automatic installation production line of the barrel hook is met, and the automatic level and production efficiency of vessels such as barrels and tanks are greatly increased.

The invention relates to an outer drying steam triple-effect heat exchange system. A flow divider is arranged in the liquid phase space of a water-bath-type saturated steam generator, and a steam discharge pipeline of the flow dividier is sequentially provided with a steam water separator and a steam drying heat exchanger; overheated steam enters the flow divider through a pressure control valve; wet saturated steam from the saturated steam generator is heated into dry saturated steam by overheated steam; the dry saturated steam enters a main steam heat exchanger and becomes high-temperature condensation water after materials are heated for the third time; flash steam of the high-temperature condensation water heats the materials in the flash steam heat exchanger for the second time; condensed flash steam enters the condensation water heat exchanger; the condensation water in the high-temperature condensation water continuously releases sensible heat to heat the material for the first time; the condensation water after temperature reduction enters a water collecting tank, and is pumped into the saturated steam generator by a water supplying pump; and the aperture of the pressure control valve is regulated by a PLC (programmed logic controller) according to the material outlet temperature. The system achieves cascading utilization of steam heat energy, guarantees that the steam heat energy can be used up, and improves the energy efficiency.

The invention provides an intelligent power catwalk which consists of a bracket, a track, a wheel set, a mechanical arm assembly and a catwalk main body, wherein the catwalk main body is arranged on the track of the bracket through the wheel set; and the mechanical arm assembly is arranged on the catwalk main body. The catwalk main body runs on the track through a general wheel and a wind-resistant wheel. According to the intelligent power catwalk disclosed by the invention, the automation of the transportation process for work of the power catwalk is realized, the labor intensity of workers is reduced and occurring probability of accidents and the loss caused by unexpected accidents are reduced. According to the intelligent power catwalk disclosed by the invention, by adopting a coder structure, the intelligent degree of the power catwalk is improved, further labor saving in the work process is realized, the work efficiency is improved and the transportation time of a drill rod is shortened. With the modular design, the intelligent power catwalk has a quickly-changing function and can be used for eliminating faults in time and ensuring stable and continuous production. The application range of the intelligent power catwalk is widened by using a catwalk platform; and the intelligent level of the intelligent power catwalk is improved by using different implementation schemes.

The invention discloses an oil-immersed high-voltage fuse comprising a base, a fuse carrier, a fusing element, an impactor and a signal output device, wherein the fuse carrier and the fusing element are arranged in the base. The base comprises an outer shell and two conductive rings. The fusing element comprises a fuse tube, a front connecting cap, a rear connecting cap, a framework arranged in the fuse tube, a main fuse body winding the framework and an auxiliary fuse body in parallel connection with the main fuse body. The fuse carrier comprises a handle and two electrically contact couplers. The handle comprises a handle body, a sealing cover, a pull rod and a linkage mechanism, wherein the handle body, the sealing cover, the pull rod and the linkage mechanism are sequentially connected, and the linkage mechanism can be connected with the front end of the sealing cover in a vertically movable mode and is parallel with the pull rod. The impactor is arranged in the rear connecting cap of the fusing element and is connected with the auxiliary fuse body. The signal output device is arranged at the rear end of the handle. After the fusing element moves, the impactor is ejected and pushes the linkage mechanism to move backward, so that the linkage mechanism triggers the signal output device to send a fusing signal. Therefore, people in a wind power generation monitoring station can eliminate faults timely, and maintenance of wind power generation is facilitated.

The invention discloses a suspending chain type ultrasonic automatic cleaning machine suitable for cleaning of a cylinder sleeve. The suspending chain type ultrasonic automatic cleaning machine suitable for cleaning the cylinder sleeve comprises a rack, wherein a tensioning device and a transmission device are arranged on the rack, the transmission device comprises a suspending chain, the rack is provided with an ultrasonic cleaning groove, an ultrasonic rinsing groove, a bubbling scalding groove, a blow drying chamber and a closed drying box, ultrasonic cleaning liquid storing grooves are formed above the ultrasonic cleaning groove and the ultrasonic rinsing groove, ultrasonic vibration boards are arranged on the two sides of the ultrasonic cleaning groove, heating pipes are arranged in the ultrasonic cleaning groove, an inner board, a separating board, a first fan and a liquid storing groove heating pipe are arranged inside the ultrasonic cleaning liquid storing grooves, the ultrasonic cleaning liquid storing grooves is communicated with the ultrasonic cleaning groove and the ultrasonic rinsing groove by a water inlet pipe and an overflow pipe, a bubbling scalding heating pipe is arranged in the bubbling scalding groove, a blow drying pump is arranged on the blow drying chamber, a multi-wing type centrifugal induced draft fan is arranged under the closed drying box, and a suspending chain is arranged on the rack through a tensioning wheel in a loop mode. The constant automatic cleaning of the cylinder sleeve can be realized.

The invention discloses a pressure drop and flow uniformity monitoring system based on a PEMFC flow field plate. The system comprises a plurality of monitoring assemblies and a computer system; the flow field plate is provided with a plurality of flow passages; each flow passage is provided with at least two monitoring assemblies; each monitoring assembly is connected with the computer system; themonitoring assemblies are used for monitoring pressures in the flow passages and sending pressure signals to the computer system; and the computer system is used for receiving the pressure signals ofat least two positions in the flow passages, calculating gas flow distribution in the flow passages through pressure drop and flow relations of fluids in the flow passages according to pressure drops, and obtaining flow distribution of gas in the flow passages of the flow field plate. The invention further provides a pressure drop and flow uniformity monitoring method based on the PEMFC flow field plate. The system and the method have the beneficial effects that a pressure sensor is arranged in each flow passage of the flow field plate and is connected with the computer system; in a reactionprocess, an actual pressure in the flow field plate is measured through the pressure sensors, and then analysis and calculation are carried out by the computer system to obtain real distribution condition of the gas in the flow field plate; and the method has an important significance in optimizing the structure of the flow field plate.

The invention discloses a fault monitoring method and system for a television. According to the method, a fault monitoring function module is additionally arranged and used in an original software module of the television, when a television system starts to work, the fault monitoring function module also starts to work, and when any type of fault of the television system occurs in the operation process, logged-in object information is output to a serial port of the television system, so that the fault of the television system is monitored. The fault can be removed conveniently in time, and the fault monitoring method and system are more beneficial for prolonging the service life of the television system.

The invention discloses a handle of an oil-immersed fuse. The handle has the functions of moving timely and triggering a signal output device when the fuse moves. The handle comprises a handle body, a sealing cover, a pull rod and a linkage mechanism, wherein the handle body, the sealing cover, the pull rod and the linkage mechanism are sequentially connected. The pull rod comprises a large cylindrical head and a large connecting rod, the linkage mechanism comprises a small connecting rod, a front limiting screw and a rear limiting screw, the front end and the rear end of the small connecting rod are respectively provided with a flange on the radial side, the thickness of each flange is smaller than the width of a groove in the large connecting rod, the two flanges are respectively and axially provided with a thread through hole, the small connecting rod is arranged parallel with the large connecting rod in an axial moving mode, the screw head of the front limiting screw is located in a front inner hole of the large cylindrical head, the rod portion of the front limiting screw is inserted in a rear inner hole of the large cylindrical head in a movable mode and is in threaded connection with the thread through hole of the flange at the front end of the small connecting rod, the screw head of the rear limiting screw is located in a middle inner hole in handle body and in a middle inner hole of the sealing cover, and the rod portion of the rear limiting screw is inserted into a front inner hole of the handle and in a front inner hole of the sealing cover in a movable mode and is in threaded connection with the thread through hole of the flange at the rear end of the small connecting rod.

The invention discloses a service processing method and device, belonging to the technical field of network. The method comprises that when it is determined that the numerical value transfer process of object information is completed, a notification interface is called to transmit a message of numerical value transfer completion to a third-party server; when sending failure is determined, an object identification of numerical value transfer of the object information is obtained; a target user identification bound to the object identification of numerical value transfer is obtained; and an instant messaging interface is called to package the message of numerical value transfer completion, and a specified instant messaging message is sent to a target user terminal. Thus, users are reminded of completion of numerical value transfer, success of message sending is ensured, the server is avoided from rely on network environment, and the stability and sending efficiency are improved; and further, the specified instant messaging message is sent to the target user identification to prompt the user that fault occurs when the message is sent, so that the user can timely eliminate the fault.

The invention belongs to the technical field of refrigerator designing and manufacturing and relates to an energy-saving frozen-blocking prevention structure for a defrosting water pipe of a refrigerator. The energy-saving frozen-blocking prevention structure comprises the defrosting water pipe and a condensation pipe of a condenser. The defrosting water pipe comprises an outer pipe, an inner pipe and a drainage passage arranged between the outer pipe and the inner pipe. The outer pipe and the inner pipe are communicated through a communicating hole passage. The condensation pipe is connected into the inner pipe from the communicating hole passage and is attached to the wall of the inner pipe. Part of the condensation pipe is placed in the defrosting water pipe, so heat dissipated from the condensation pipe can be utilized more effectively, and the purpose of preventing the defrosting water pipe from freezing can be achieved.

The invention discloses a display control device based on optical fiber transmission, and relates to the field of computer-mounted display control. The display control device comprises a display control computer unit and a light interface conversion unit, the display control computer unit comprises a computer module, a signal processing module and a state monitoring module, the computer module is used for achieving a computer function, the signal processing module is used for signal processing, communication is achieved through the light interface conversion unit and external equipment, and the state monitoring module is used for searching for and monitoring a system state; the light interface conversion unit is used for conducting signal exchange with the signal processing module, and conducting signal processing, and provides a signal to the external equipment through a light fiber interface, therefore, far end control over the display control computer unit is achieved, and self-state information is transferred to the display control computer unit through optical fiber.

The embodiment of the invention discloses an intelligent cabinet monitor, and the monitor collects the current information of all monitoring targets of an intelligent cabinet and the detection data ofall sensors, and uploads the current information and the detection data to a cloud server. The intelligent cabinet provided by the embodiment of the invention adopts the monitor, so that the intelligent cabinet can be monitored more comprehensively and effectively, the operation and maintenance efficiency can be improved, and the operation and maintenance cost can be reduced.

The invention provides a service enabler instance management method and a service enabler instance management system, which relate to the field of network communication and aim to solve the technical problem in the prior art that the performance of a service enabler instance cannot be managed. The method comprises the following steps of: acquiring the performance information of the service enabler instance by using a running environment; comparing the performance information with a preset performance index of the performance information to obtain a comparison result; and managing the performance of the service enabler instance according to the comparison result. The technical scheme provided by the invention can be applied in the field of performance management.

The invention discloses a multi-functional adjustable inductor, which comprises an inductor frame and a through slot disposed in the inductor frame and communicates back and forth, wherein shielding covers are symmetrically arranged in the through slot and stretch vertically; a first cavity is arranged in the shielding cover and stretches vertically; a vertically stretching columnar magnetic coreis arranged in the first cavity; a copper wire is wound around the magnetic core; a threaded hole with opening upward is formed at the top end of the magnetic core; a groove with opening downward is arranged above the first cavity in a communication manner; a first wire pipe is arranged on the right side of the groove; a first contact block is arranged at one end of the wire pipe far away from thegroove; and a screw is arranged above the magnetic core; and the screw penetrates through the upper wall of the inductor frame.

The invention discloses an IMU-based swing radar vibration and inclination angle state monitoring method and system, and the method comprises the steps: adding an inertia measurement device to each radar unit located in a blast furnace, and carrying out the charge level information scanning of the interior of the blast furnace through the radar units; when the radar unit acquires the charge leveldistance information in the radial direction in the blast furnace, enabling the inertial measurement device to acquire radar state information in the same direction; sending the acquired charge leveldistance information and radar state information to a monitoring center; enabling the monitoring center to describe the height of each point of the charge level according to the charge level distanceinformation, monitoring the vibration intensity and the swing inclination angle of the radar unit in real time according to the radar state information, and recording the accumulated inclination angleerror of multiple swings so as to realize real-time monitoring and diagnosis of the state of the radar unit. According to the invention, the operation state of the radar in the blast furnace can be monitored in real time, the abnormal operation state of the radar is alarmed, faults are eliminated in time, and the blast furnace radar can work more stably and reliably.

The invention provides a method for monitoring deformation (bulge) of a power battery of a new energy automobile. A resistance strain gauge is adhered to an external surface of a monitored single power battery, and according to a strain effect principle that the end resistance value of the resistance strain gauge changes correspondingly when the resistance strain gauge generates mechanical deformation under the action of external force, when the monitored single power battery is deformed (bulged), the resistance strain gauge adhered to the external surface of the monitored single power battery is mechanically deformed under the action of mechanical force, the end resistance value of the resistance strain gauge is changed in the process, and the input voltage applied to one end of the resistance strain gauge is constant voltage; and the output voltage of the other end changes along with the change of the resistance value, and the changed voltage is transmitted to a power battery pack management system (BMS) through a line, so that early warning is generated, faults are determined in time, and hidden dangers are eliminated.

The invention discloses an oil-immersed high-voltage fuse comprising a base, a fuse carrier, a fusing element, an impactor and a signal output device, wherein the fuse carrier and the fusing element are arranged in the base. The base comprises an outer shell and two conductive rings. The fusing element comprises a fuse tube, a front connecting cap, a rear connecting cap, a framework arranged in the fuse tube, a main fuse body winding the framework and an auxiliary fuse body in parallel connection with the main fuse body. The fuse carrier comprises a handle and two electrically contact couplers. The handle comprises a handle body, a sealing cover, a pull rod and a linkage mechanism, wherein the handle body, the sealing cover, the pull rod and the linkage mechanism are sequentially connected, and the linkage mechanism can be connected with the front end of the sealing cover in a vertically movable mode and is parallel with the pull rod. The impactor is arranged in the rear connecting cap of the fusing element and is connected with the auxiliary fuse body. The signal output device is arranged at the rear end of the handle. After the fusing element moves, the impactor is ejected and pushes the linkage mechanism to move backward, so that the linkage mechanism triggers the signal output device to send a fusing signal. Therefore, people in a wind power generation monitoring station can eliminate faults timely, and maintenance of wind power generation is facilitated.

The invention provides a remote collection method and collection device for database performance, and the method comprises the following steps: responding to a database login request of a user, and obtaining database management authority information of the user, the database management authority information being used for representing the category of database information obtained by the user; receiving a database information acquisition instruction sent by a user, and judging whether the database information to be acquired by the user is within the management authority of the user or not; if yes, the intelligent terminal obtains the database information from a remote server according to the database information obtaining instruction; And presenting the obtained database information to a user. The data report related to the database operation state can be collected in real time in response to the user instruction, a database administrator can actively inquire the operation state according to needs, and troubleshooting can be conducted in time.

The invention discloses cutting equipment for coating composite fabric. The equipment comprises a main body and a motor. A storage door is movably installed at the position, close to the edge, of theouter surface of the front end of the main body. A control panel is arranged at the position of the side, close to the storage door, of the outer surface of the front end of the main body. A display screen is arranged on the outer surface of the front end of the control panel, a function key is arranged at the position below the display screen on the outer surface of the front end of the control panel, a control rotary knob is arranged at the position, close to the control panel, of the outer surface of the upper end of the main body, and a dial gauge is arranged at the position, close to therear end of the control rotary knob, of the outer surface of the upper end of the main body. According to the cutting equipment for the coating composite fabric, a brake and a fan are arranged, economic losses and personnel safety hazards caused in emergency circumstances are reduced, damage to the equipment and harm to personnel caused by heat and smoke dust are reduced, the functionality is effectively improved, and a better using prospect is brought.

The invention discloses an internal circulation oil way system capable of intelligently detecting the oil supply state of an air compressor, a gear box assembly comprises a gear box body and a multi-stage speed-increasing transmission gear set mounted in the gear box body and a main body cover, and an oil storage cavity is formed between the gear box body and the main body cover; the oil supply pump is arranged on the outer wall of the lower portion of the main body cover and is in synchronous transmission connection with the multi-stage speed-increasing transmission gear set, the oil inlet copper pipe is communicated with the oil supply pump and extends upwards, the oil storage hole channel is arranged in the transition box body and is connected with the oil inlet copper pipe, and the first atomizing nozzle is arranged at the front end of the transition box body and is communicated with the oil storage hole channel. The oil pressure and temperature sensor is arranged in the oil storage hole channel; an oil inlet hole channel of the oil supply pump is communicated with the oil storage cavity, and an oil return hole communicated with the oil storage hole channel and the oil storage cavity is formed in the transition box body. The internal gear of the air compressor is continuously and uniformly lubricated, the heat in the system is balanced, the oil supply of the internal circulation oil path system is efficient, the heat dissipation effect is obvious, and the working state can be intelligently monitored.

The invention discloses a converging mechanism on a beverage back-end secondary packaging line and an intelligent control method thereof.The converging mechanism comprises a four-channel separation conveying mechanism, a channel changing mechanism, a double-channel conveying mechanism, a first sensor, a second sensor, a third sensor, an emergency stop switch, an alarm, a controller and a rack; the intelligent control method of the confluence mechanism is realized based on the confluence mechanism and comprises a lane changing control method, a replenishment control method and a card package sudden stop alarm method. Automatic counting and intelligent lane changing can be achieved, confluence distribution is more intelligent and more reasonable, and channel congestion is avoided; the card bag automatically stops and gives an alarm, and faults are removed in time; products are pulled open in a differential mode, counting is convenient, and bag jamming is avoided; the rubber covered roller can reduce collision energy, and product damage caused by collision is avoided; the small-pitch ball mesh belt is used for conveying, the pitch of the mesh belt is small, steering of products can be avoided, the mesh belt is covered with balls, and product scratching in the product stacking process is avoided.

The invention discloses a horizontal full-automatic micro-channel coating production line. The horizontal full-automatic micro-channel coating production line sequentially comprises a degreasing part,a bubble cleaning part, a passivation part, a first coating part, a first drying part, a second coating part, a second drying part, a cooling part and a PLC. The production takt can be adjusted freely according to the process time requirements for workpiece treatment (directly set to 0-60 minutes per workpiece on a panel). Cleaning tanks are provided with cyclic filter devices, so that the cleanness of a cleaning solution is guaranteed; and liquid level protection devices are arranged in the cleaning tanks and liquid storage tanks to automatically protect water pumps and heating pipes in caseof a liquid shortage, and process parameters such as the PH, the electric conductivity, the temperature and the time are detected automatically.

The invention discloses a control method of an air conditioner. The control method of the air conditioner comprises the steps: judging whether an exhaust temperature sensing bulb is loosened or not; and if yes, acquiring the current operation mode and the outdoor temperature, and controlling the operation frequency of a compressor and the opening degree of an electronic expansion valve according to the current operation mode and the outdoor temperature. According to the control method of the air conditioner, the opening degree of the electronic expansion valve and the operation frequency of the compressor can be adjusted according to the working conditions, the compressor can be prevented from being damaged due to overheating, and the refrigerating and heating comfort is higher.

The invention discloses an IMU-based oscillation radar vibration and inclination state monitoring method and system, comprising: adding an inertial measurement device to each radar unit located in a blast furnace, and using the radar unit to scan the material surface information inside the blast furnace; While the unit acquires the material surface distance information in the radial direction inside the blast furnace, the inertial measurement device acquires the radar state information in the same direction; the acquired material surface distance information and radar state information are sent to the monitoring center; The information describes the height of each point on the material surface, monitors the vibration intensity and swing angle of the radar unit in real time according to the radar state information, and records the cumulative angle error of multiple swings, so as to realize real-time monitoring and diagnosis of the state of the radar unit. The invention can monitor the running state of the radar inside the blast furnace in real time, give an alarm to the abnormal running state of the radar, and eliminate the fault in time, so that the blast furnace radar can work more stably and reliably.

The invention discloses an integrated electric energy management platform which can resist the electric energy data loss caused by faults of a main electric energy management system when a main station end mode is applied, to achieve redundancy of the integrated electric energy management platform, wherein the faults of the main electric energy management system result from accidents, such as virus invasion, power failure of a scheduling building and the like. When a plant station end mode is applied, data needed by an operator are basically collected and processed; the old artificial way to check an ammeter is changed; the defects such as slow data statistics and long reporting period are overcome; great labor and manpower are saved; the data accuracy and the statement standardization are greatly improved; and the platform has strong practical value. When a portable mode is applied, automatic maintainers can collect and read power grid electric energy data at any time and place only by carrying communication wires; when the power grid electric energy is abnormal, the platform can help the maintainer to locate the fault points well and eliminate the faults timely, so that the electric energy system can be timely maintained.

The invention provides a test platform and a control method of a diesel engine starting system, the diesel engine starting system comprises an air distributor and a starting valve, the air distributor is used for accessing compressed air, and the test platform comprises a starting simulation device, a starting air pipeline and a phase sequence monitoring system. The starting simulation device is used for driving the air distributor to rotate; the starting air pipeline is used for connecting the air distributor and the starting valve; the phase sequence monitoring system is used for monitoring the opening and closing state and sequence of the starting valve. The starting simulation device drives the air distributor to rotate, so that the air distributor conveys accessed compressed air to the starting valve through the starting air pipeline, and the phase sequence monitoring system monitors the opening and closing states and sequence of the starting valve. According to the test platform, the design function of the diesel engine starting system can be tested, faults can be checked in time, the test verification efficiency is improved, meanwhile, direct installation to the diesel engine for verification is avoided, and the verification cost is reduced.

The invention discloses a device and method for purifying a pesticide of an aquaculture factory by using daphnia magna. The device comprises a concentration circulation adjusting device and at least one tubular culture mechanism; each tubular culture mechanism can form a closed loop with the concentration circulation adjusting device; control valves are arranged at the two ends of each tubular culture mechanism; each tubular culture mechanism comprises a feeding end and a discharging end; a detachable culture tank is arranged on one side, close to the discharging end, of each tubular culture mechanism. According to culture equipment and a using method of the daphnia magna, provided by the invention, the daphnia magna with high adaptability and decomposition capacity to pesticide chemical components is selected in a culture selecting mode with the concentration which changes in a fluctuating manner; then, the daphnia magna is thrown in the water which is polluted by the pesticide of theaquaculture factory; the pesticide is decomposed by using the daphnia magna, and the polluted water is purified; the device and the method are easy to implement and long in lasting time, can also enrich food types of fish, and do not have a negative effect on the environment.