CN205450759U - General PLC device under water - Google Patents
General PLC device under water Download PDFInfo
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- CN205450759U CN205450759U CN201521117002.5U CN201521117002U CN205450759U CN 205450759 U CN205450759 U CN 205450759U CN 201521117002 U CN201521117002 U CN 201521117002U CN 205450759 U CN205450759 U CN 205450759U
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Abstract
The embodiment of the utility model discloses general PLC device under water, include: a host system for PLC's whole detection and control, a signal acquisition module detects the mouth including high accuracy analog to digital conversion circuit, digital analog conversion circuit and digital quantity and forms, is connected with host system, a power -balance module for that detects entire system uses the electric power circumstances, prevents that the too big damage power of power is and provide necessary output, a power module is connected with host system for accomplish opening, closing of external solenoid valve, the control and the fault detection of motor, host system, power management module, signal acquisition module, power -balance module, power module, communication module, rectifier module and host system are encapsulated into same mechanical mounting dimension's circuit module. The utility model discloses make this system to realize the different tactics that observe and control through the programming on different underwater kits and instrument and equipment to can directly be applied to and work under water.
Description
Technical field
This utility model belongs to Digital image technology and data acquisition control system field, particularly relates to the most general PLC device of one.
Background technology
In recent years, Development of Marine economy and ocean science are risen to unprecedented strategic height by China, and marine industries become especially cultivates and the key areas of development strategy new industry.During ocean development, needing numerous special marine engineering equipments and instrument and equipment, these engineer equipments and instrument and equipment are in exploitation or actual application, and the overwhelming majority is required for suitable electronic TT&C system to realize normal work.
At present, developer would generally select land to obtain finished product PLC (programmable logic controller (PLC)) device of maturation application, then encapsulates by adding watertight pressure-resistant, thus realizes electronic control system.And finished product PLC designs for land application conditions, do not consider the practical situation of submerged applications, the most in actual use, occur the problem that and be generally configured with in (1) PLC module running and accident indicator, it is simple to user understands ruuning situation and searches fault, but when being applied under water, owing to PLC seals reason, run the most invisible with accident indicator so that the operation of PLC and failure condition are difficult to obtain in time, difficult in maintenance；(2) PLC does not the most possess transmission of video passage, if thus time underwater instrument equipment has video monitoring demand, for providing transmission of video passage, also need additionally to add remote video transmission system, thus increase the complexity of TT&C system under water.(3) how integrated existing PLC is in a system, also needs to regenerate new system if adding additional functionality, is not easy to safeguard and upgrading.(4) underwater sensor, the control circuit of underwater exercise device are required for being sealed under water in compressive cabin, and are fixed by chamber mount.And the work wasted time and energy in the design of the cabling nacelle the most under water of the fixing and circuit that circuit board is in nacelle.
Utility model content
For solving the problems referred to above, the purpose of this utility model is to provide the most general PLC device of one so that this system by programming realization difference observing and controlling strategy on different underwater kits and instrument and equipment, and can may be directly applied to underwater operation.
For achieving the above object, the technical solution of the utility model is: the most general PLC device of one, including:
One main control module, for whole detection and the control of PLC；
One power management module, the power supply needed for providing to whole system；
One signal acquisition module, including high precision analogue change-over circuit, D/A converting circuit and digital quantity detection mouth composition, is connected with main control module, for the collection of underwater signal data；
One power-balance module, for detecting the electric power situation of whole system, prevents power excessive damage power supply and provides the output of necessity；
One power model, is connected with main control module, has been used for the unlatching of external electromagnetic valve, closedown, the control of motor and fault detect；
One communication module, is provided with HD video transmission channel, is connected with main control module；
One rectification module, has been used for alternating current to galvanic conversion；
The circuit module of the above-mentioned the most general PLC device of each module composition, described main control module has been connected the transmission of signal with described signal acquisition module, power model and communication module by the way of CAN.
Preferably, described circuit module front end is provided with state indicator panel, and end is provided with the first connector connected for electric wire, also includes patch panel, described patch panel is provided with the second connector matched with the first connector.
Preferably, described main control module includes the first main MCU, described first main MCU connects the first system self-inspection MCU, black box and external clock, described first main MCU connects the CAN communication EBI of isolation, the RS232/485 serial ports of isolation and the network communication interface LAN of isolation, and described the first system self-inspection MCU connects the CAN interface of isolation.
Preferably, described signal acquisition module comprises the second main MCU, described second main MCU connects second system self-inspection MCU, high-precision analog digital converter ADC and probe power control circuit, described second main MCU is also connected with CAN interface, digital analog converter DAC and the D-IN interface of isolation, and described second system self-inspection MCU connects the CAN interface of isolation.
Preferably, described power-balance module comprises the 3rd main MCU, described 3rd main MCU connects the 3rd System self-test MCU, voltage x current Acquisition Circuit, connecting on described 3rd main MCU and have the CAN communication EBI of isolation, power input and power output interface, described 3rd System self-test MCU connects the CAN interface of isolation.
Preferably, described power model includes that the 4th main MCU, described 4th main MCU connection have the 4th System self-test MCU, the solid-state relay of 8 groups of band isolation and the CAN interface of isolation, and described 4th System self-test MCU connects the CAN interface of isolation.
Preferably, described main control module, signal acquisition module, power-balance module and power model are provided with reset unit, indication panel, signal of telecommunication monitoring unit and serial number generator, described reset unit provides software reset and two kinds of reset modes of hardware reset, can reset in time when system failure；Described indication panel provides a user with the cue of working state of system；Described signal of telecommunication monitoring unit will detect the AC220V signal of telecommunication provided on board or the DC300V signal of telecommunication is the most abnormal, the electric power thus supplied of real-time feedback system, when there is system power supply exception, user can take emergency operation in time, and the most also detection supplies the supply voltage of this module；Described serial number generator is by extracting internal 96 ID of main MCU chip, and it is combined one reversible serial number of generation with machine code, temporal information and certain fixed code of PC.
Preferably, described power management module comprises isolating switch power.
Preferably, described communication module uses coaxial telecommunications module or fiber optic telecommunications module.
Compared with the most general PLC device that prior art uses, the beneficial effects of the utility model are as follows:
(1) this product not only have that land PLC reliability is high, interface resource enriches, possess modular construction, the series of advantages such as easy to use, be provided simultaneously with compact conformation, integrated level is high, carry pressure-resistant seal, can on-line maintenance, possess HD video transmission channel etc. and be suitable to the advantage of submerged applications, the versatility of control system, ease for use and reliability can be substantially improved while shortening the User Exploitation cycle further.
(2) main control module provides the isolation communication interface of CAN interface, RS232/485 interface and 3 kinds of multi-forms of ethernet lan interface for user's selection.Restriction due to RS232/485 serial communication bandwidth, it is difficult to when carrying out the high-speed communication of big data quantity use RS232/485 serial communication, therefore use the mode of CAN, CAN uses the management of efficient distributed node, make the node number in network the most unrestricted, and make equipment can expand easily when resource uses inadequate.In CAN, each node does not has master-slave simultaneously, arbitrary node can initiate data communication to any other (one or more) node, and the length of data segment is up to 8 bytes during communication, taking bus time will not be long, it is ensured that the real-time of communication.Owing to major part external sensor needs when carrying out data communication with main control module to use RS232/485 serial communication, so also remaining RS232/485 serial communication mode under water.
(3) each module i.e. can work independently and can realize the transmission of mutual data, if the most a certain module damage, it is possible to carrying out disassembling, assembling and replacing easily and keep in repair, modular design is easy to user and is expanded according to the actual requirements, improves work efficiency.
Accompanying drawing explanation
Fig. 1 is the system principle diagram of the most general PLC device of this utility model embodiment.
Fig. 2 is the main control module circuit structure diagram of the most general PLC device of this utility model embodiment.
Fig. 3 is the signal acquisition module circuit structure diagram of the most general PLC device of this utility model embodiment.
Fig. 4 is the power-balance modular circuit structure chart of the most general PLC device of this utility model embodiment.
Fig. 5 is the power module circuit structure chart of the most general PLC device of this utility model embodiment.
Description of reference numerals: 1-main control module；2-signal acquisition module；3-power-balance module；4-power model；5-power management module；6-communication module；7-rectification module；The main MCU of 101-first；102-the first system self-inspection MCU；103-black box；104-external clock；The main MCU of 201-second；202-second system self-inspection MCU；203-probe power control circuit；204-high-precision analog digital converter ADC；The main MCU of 301-the 3rd；302-the 3rd System self-test MCU；303-power balancing algorithm；304-voltage x current Acquisition Circuit；305-power input；306-power output interface；The main MCU of 401-the 4th；402-the 4th System self-test MCU；403-solid-state relay.
Detailed description of the invention
In order to make the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with drawings and Examples, this utility model is further elaborated.Should be appreciated that specific embodiment described herein, only in order to explain this utility model, is not used to limit this utility model.
On the contrary, this utility model contains any replacement made in spirit and scope of the present utility model, amendment, equivalent method and scheme being defined by the claims.Further, in order to make the public that this utility model to be had a better understanding, in below details of the present utility model being described, detailed describe some specific detail sections.The description not having these detail sections for a person skilled in the art can also understand this utility model completely.
As it is shown in figure 1, the system principle diagram of its most general a kind of PLC device that is this utility model embodiment, comprising: main control module 1, for whole detection and the control of PLC；Power management module 5, the power supply needed for providing to whole system；Signal acquisition module 2, is mainly made up of high precision analogue change-over circuit, D/A converting circuit and digital quantity detection mouth, is connected with main control module 1, for collection and the detection of underwater signal data；Power-balance module 3, for detecting the electric power situation of whole system, prevents power excessive damage power supply and provides the output of necessity；Power model 4, is connected with main control module 1, has been used for the unlatching of external electromagnetic valve, closedown, the control of motor and fault detect etc.；Communication module 6, is provided with HD video transmission channel, is connected with main control module 1；Rectification module 7, has been used for alternating current to galvanic conversion；The circuit module of the above-mentioned the most general PLC device of each module composition, main control module has been connected the transmission of signal with signal acquisition module 2, power model 4 and communication module 6 by the way of CAN (controller local area network) bus, and communication module 6 can also use Ethernet to realize the communication between main control module 1.300V high pressure can be converted into the 24V power supply needed for main control module 1, signal acquisition module 2, power model 4, and the 5V power supply needed for communication module 6 by power management module 5.
In concrete Application Example; power management module 5 uses efficiency to be up to the Switching Power Supply of 89%; 300V high pressure is converted to 24V normal system running voltage; and take isolation processing; the effect of surge insulation blocking can be played, greatly strengthen the job stability of system, in power management module 5, signal electricity and power electricity be separated; can prevent when using powerful device, especially equipment has just opened the impact that huge current flow that moment brought is properly functioning on system.
As shown in Figure 2, it is the main control module circuit structure diagram of this utility model embodiment the most general a kind of PLC device, main control module 1 includes the first main MCU (microprogram control unit) 101, first main MCU101 connects the first system self-inspection MCU102, black box 103 and external clock 104, being also associated with CAN communication EBI, the RS232/485 serial ports of isolation and the network communication interface LAN of isolation of isolation, the first system self-inspection MCU102 connects the CAN interface of isolation.The first system self-inspection MCU102 connects the CAN communication bus of isolation.nullThe mode that main control module uses the first main MCU and the first system self-inspection MCU to work simultaneously works to carry out the normal of system，Black box will store the whole system systems operations data at each time point，The data that can store in resolving black box by the poster processing soft after end-of-job，According to time point、Data contents etc. go back the flow process that original system works under water，And the data of detection limit can be presented by the way of performance graph，It is supplied to user's flow process of system real work intuitively，So as the discovery of system work problem and solution，The first system self-inspection MCU unit is divided into two kinds of working methods: system detection mode under system detection mode and line model under off-line mode，Achieve and oneself check the most normal function of system related functions，External clock unit will use the mode of external clock chip，A stable clock information is provided to system，Ethernet lan communication is for communicating between main control module 1 with communication module 6，RS232/485 serial communication under water major part sensor and main control module 1 between data communication，CAN is for the real-time Communication for Power of the big data of each intermodule of submarine system.
As shown in Figure 3, it is the signal acquisition module electrical block diagram of this utility model embodiment the most general a kind of PLC device, comprise the second main MCU201, second main MCU201 connects second system self-inspection MCU202, probe power control circuit 203 and high-precision analog digital converter ADC204, second main MCU201 is also connected with CAN interface, digital analog converter DAC and the D-IN interface of isolation, and second system self-inspection MCU202 connects the CAN interface of isolation.Signal acquisition module 2 provides the analog to digital conversion circuit of 12bit and 24bit, can require to choose use 12bitADC sample circuit or 24bitADC sample circuit according to the sensor accuracy that need to sample.Wherein, 12bitADC sample circuit has 10 tunnels, and 24bitADC difference sample circuit has 2 tunnels, if 24bitADC voltage sampling circuit then has 4 tunnels.In 10 road 12bitADC sample circuits, 5 tunnels are used for gathering voltage signal, and 5 tunnels are used for gathering current signal, and every road gathers current interface can be provided out 24V power supply.24bitADC sample circuit mainly is completed to gather by high-precision ADS1256 (8 24, passage △-∑ pattern number converter), then communicated with the second main MCU by SPI protocol, the data filtering of the AD value collected programming realization in the second main MCU processes, and can obtain high accuracy, stable smooth data.Signal acquisition module additionally provides 2 tunnel isolation analog voltage signal outputs, and digital voltage signal is converted to-5V--+5V analog voltage signal by DAC in high precision, is then passed through isolation amplifier output.Signal acquisition module additionally provides 8 railway digital input quantity (D-IN) detection mouths, and the digital signal of input is gathered by the I/O mouth of the second main MCU through light-coupled isolation.Whether detection high-precision analog digital converter ADC, digital analog converter DAC, D-IN can normally be worked by second system self-inspection MCU, miscue will be sent by independent isolated can bus to host computer if makeing mistakes, facilitating user can accurately find problem place.It is mutual that second main MCU201 carries out data communication by the communication mode of CAN and main control module 1.Probe power control circuit 203 controls the opening and closing of running voltage needed for underwater sensor.
As shown in Figure 4, it is the electrical block diagram of power-balance module of this utility model embodiment the most general a kind of PLC device, comprise the 3rd main MCU301,3rd main MCU301 connects the 3rd System self-test MCU302, power balancing algorithm 303 and voltage x current Acquisition Circuit 304, being also associated with CAN communication EBI, power input and the power output interface of isolation on 3rd main MCU301, the 3rd System self-test MCU302 connects the CAN interface of isolation.3rd main MCU301 of power-balance module completes the process of power balancing algorithm 303, judges as battery charging or to system power supply according to power balancing algorithm 303.Voltage x current Acquisition Circuit 304 will use voltage current transformer to measure the DC voltage in electrical network or circuit, DC current in real time, transforms it into DC voltage (Uz) output of standard.Input, output loop are completely isolated, and output signal and power supply altogether, can directly connect with various A/D converter, composition voltage x current acquisition system.The Acquisition Circuit of this module is checked by the 3rd System self-test MCU by the initial period in system electrification, if pinpointing the problems, to be reported to the police by the display lamp in indication panel, but when being applied under water, owing to PLC seals reason, run the most invisible with indicating fault panel, so this utility model is by the way of CAN communicates, send false alarm information to system waterborne, reported to the police by the display lamp in indication panel simultaneously and user can be fixed a breakdown in time.Power-balance module monitors the electricity of underwater battery in real time, charged the battery in time by power supply waterborne during electricity deficiency, power-off suddenly during submarine system works, completes current task, the harm that anti-locking system is unnecessary because power down causes can in time system power supply under water.
As shown in Figure 5, it is the power module circuit structural representation of this utility model embodiment the most general a kind of PLC device, it includes the 4th main MCU401,4th main MCU401 connects the 4th System self-test MCU402, the solid-state relay 403 of 8 groups of band isolation and the CAN interface of isolation, 4th System self-test MCU402 connects the CAN interface of isolation, this module is supplementing of numeral output (D-O) controlled quentity controlled variable to whole system, so that control panel can build bulky complex system, preferably drive solid-state relay.Owing to this modular circuit is the biggest, D-O controlled quentity controlled variable is individually taken out one module of formation and the Power Groud of whole system and signal ground can be separated, thus reduce the impact on other non-power part of whole system of the big electric current, improve the stability of system work.
In concrete application example, main control module 1, signal acquisition module 2, power-balance module 3, power model 4 is provided with reset unit, indication panel, signal of telecommunication monitoring unit and serial number generator, reset unit will provide software reset and two kinds of reset modes of hardware reset, can reset in time when system failure, indication panel will provide a user with the cue of working state of system, signal of telecommunication monitoring unit will detect the AC220V signal of telecommunication provided on board or the DC300V signal of telecommunication is the most abnormal, the electric power thus supplied of real-time feedback system, when there is system power supply exception, user can take emergency operation in time, the most also detection supplies the supply voltage of this module.Serial number generator is by extracting internal 96 ID of main MCU chip, and it is combined one reversible serial number of generation with machine code, temporal information and certain fixed code of PC, and this serial number will be globally unique.In actual use, whether process authorized first to detect serial number, if exceeding the pot life through mandate or mandate, whole submarine system will not work.
In concrete Application Example, communication module 6 uses coaxial telecommunications module or fiber optic telecommunications module.Coaxial telecommunications module and main control module 1 use the mode of Ethernet to carry out the mutual of data, by modem, network signal is converted to the signal of telecommunication, by the way of high-voltage carrier, signal is transmitted together with high pressure 300V, complete waterborne with under water communicate and electric energy provide.But the restriction of the bandwidth due to coaxial cable, therefore high definition screen signal cannot be transmitted.In order to solve high definition screen signal integrity under water to be transferred to clamping plate waterborne, fiber optic telecommunications module can be used.4 tunnel high definition SDI interfaces are comprised inside fiber optic telecommunications module, being fed water train wheel bridge by fiber-optic transfer of the HD video information high-fidelity that high-definition camera under water can be shot, thus meet the demand that user's needs high definition monitors in real time.
In concrete Application Example, rectification module 7 includes senior bridge rectifier chip, for completing alternating current to galvanic conversion, rectification module 7 connects power management module 5,220V single-phase alternating current can be converted to the 300V DC input voitage needed for power management module 5, stable VD and the ripple less than 20mV are provided, effectively can provide stable voltage power supply environment for late-class circuit, improve the sampling precision of the analog-digital converter ADC transducer of digital signal (analogue signal be converted to) data.
nullBy the most general PLC device of this utility model embodiment of arrangement above operationally，In the circuit board guide-track groove that circuit module with the most general PLC device possessing HD video transmission channel is installed on support，Circuit module is connected with patch panel by connector，Debugging circuit module according to the display lamp information on state display is that circuit module can normally work，Support is put in underwater instrument equipment cavity，The electric wire stretched out in patch panel connects with the watertight connector in underwater instrument device cover，The most general PLC possessing HD video transmission channel starts working，Supply voltage passes through rectification module 7 rectification，Export stable 300V DC voltage to power management module 5，300V high pressure is converted into 24V power supply and is delivered to main control module 1 by power management module 5、Signal acquisition module 2、Power model 4 and power-balance module 3，300V high pressure is converted into 5V power supply simultaneously and is delivered to communication module 6，Whether detect each module serial number through authorizing，If through authorizing，Then start working，If not exceeding the pot life through mandate or mandate, whole system will not be worked.nullAfter normal work，Power-balance module 3 monitors the electricity of underwater battery in real time，Charged the battery in time by power supply waterborne when the not enough power failure the most suddenly of electricity，Signal acquisition module 2 descends the state of parameters and by data information transfer to main control module 1 in working order by arranging various external sensor collection underwater instrument equipment，Communication module 6 is provided with HD video transmission channel，Can be by the high-definition video signal complete transmission of underwater instrument equipment to host computer，Main control module 1 receives and stores the feedback data of each time point of each module，By the poster processing soft, data can be resolved after end-of-job，According to time point、Data contents etc. are gone back original system workflow under water and show the performance graph of detection limit，It is supplied to user's flow process of system real work intuitively，So that the discovery of system work problem solves.
The foregoing is only preferred embodiment of the present utility model, not in order to limit this utility model, all any amendment, equivalent and improvement etc. made within spirit of the present utility model and principle, within should be included in protection domain of the present utility model.
Claims (9)
1. the most general PLC device, it is characterised in that including:
One main control module, for whole detection and the control of PLC；
One power management module, the power supply needed for providing to whole system；
One signal acquisition module, including high precision analogue change-over circuit, D/A converting circuit and digital quantity detection mouth composition, is connected with main control module, for the collection of underwater signal data；
One power-balance module, for detecting the electric power situation of whole system, prevents power excessive damage power supply and provides the output of necessity；
One power model, is connected with main control module, has been used for the unlatching of external electromagnetic valve, closedown, the control of motor and fault detect；
One communication module, is provided with HD video transmission channel, is connected with main control module；
One rectification module, has been used for alternating current to galvanic conversion；
The circuit module of the above-mentioned the most general PLC device of each module composition, described main control module has been connected the transmission of signal with described signal acquisition module, power model and communication module by the way of CAN.
The most general PLC device the most according to claim 1, it is characterized in that, described circuit module front end is provided with state indicator panel, and end is provided with the first connector connected for electric wire, also include patch panel, described patch panel is provided with the second connector matched with the first connector.
3. the most general PLC device as claimed in claim 1, it is characterized in that, described main control module includes the first main MCU, described first main MCU connects the first system self-inspection MCU, black box and external clock, described first main MCU connects the CAN communication EBI of isolation, the RS232/485 serial ports of isolation and the network communication interface LAN of isolation, and described the first system self-inspection MCU connects the CAN interface of isolation.
4. the most general PLC device as claimed in claim 1, it is characterized in that, described signal acquisition module comprises the second main MCU, described second main MCU connects second system self-inspection MCU, high-precision analog digital converter ADC and probe power control circuit, described second main MCU is also connected with CAN interface, digital analog converter DAC and the D-IN interface of isolation, and described second system self-inspection MCU connects the CAN interface of isolation.
5. the most general PLC device as claimed in claim 1, it is characterized in that, described power-balance module comprises the 3rd main MCU, described 3rd main MCU connects the 3rd System self-test MCU, voltage x current Acquisition Circuit, connecting on described 3rd main MCU and have the CAN communication EBI of isolation, power input and power output interface, described 3rd System self-test MCU connects the CAN interface of isolation.
6. the most general PLC device as claimed in claim 1, it is characterized in that, described power model includes the 4th main MCU, described 4th main MCU connects the 4th System self-test MCU, the solid-state relay of 8 groups of band isolation and the CAN interface of isolation, and described 4th System self-test MCU connects the CAN interface of isolation.
7. the most general PLC device as described in claim 1 to 6 is arbitrary, it is characterized in that, described main control module, signal acquisition module, power-balance module and power model are provided with reset unit, indication panel, signal of telecommunication monitoring unit and serial number generator, described reset unit provides software reset and two kinds of reset modes of hardware reset, can reset in time when system failure；Described indication panel provides a user with the cue of working state of system；Described signal of telecommunication monitoring unit will detect the AC220V signal of telecommunication provided on board or the DC300V signal of telecommunication is the most abnormal, the electric power thus supplied of real-time feedback system, when there is system power supply exception, user can take emergency operation in time, and the most also detection supplies the supply voltage of this module；Described serial number generator is by extracting internal 96 ID of main MCU chip, and it is combined one reversible serial number of generation with machine code, temporal information and certain fixed code of PC.
8. the most general PLC device as described in claim 1 to 6 is arbitrary, it is characterised in that described power management module comprises isolating switch power.
9. the most general PLC device as described in claim 1 to 6 is arbitrary, it is characterised in that described communication module uses coaxial telecommunications module or fiber optic telecommunications module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521117002.5U CN205450759U (en) | 2015-12-29 | 2015-12-29 | General PLC device under water |
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| CN201521117002.5U CN205450759U (en) | 2015-12-29 | 2015-12-29 | General PLC device under water |
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| CN205450759U true CN205450759U (en) | 2016-08-10 |
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| CN201521117002.5U Expired - Fee Related CN205450759U (en) | 2015-12-29 | 2015-12-29 | General PLC device under water |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109141539A (en) * | 2018-10-26 | 2019-01-04 | 中国科学院深海科学与工程研究所 | A kind of underwater Multifunctional AC motor control and test device |
| CN109962445A (en) * | 2017-12-25 | 2019-07-02 | 上海齐耀重工有限公司 | Marine protection device |
| CN110058581A (en) * | 2019-04-15 | 2019-07-26 | 锡林郭勒职业学院 | A kind of electrical soft fault diagnosis device of digital quantity and its application method |
| CN110764438A (en) * | 2018-07-25 | 2020-02-07 | 南京市嘉隆电气科技有限公司 | Control signal method based on solid-state relay |
| CN111131675A (en) * | 2019-12-30 | 2020-05-08 | 陕西格兰浮智能科技有限公司 | High-definition underwater network ball machine |
| CN111386753A (en) * | 2017-10-27 | 2020-07-07 | L3技术公司 | Thermal isolation of flight recorder memory core |
-
2015
- 2015-12-29 CN CN201521117002.5U patent/CN205450759U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111386753A (en) * | 2017-10-27 | 2020-07-07 | L3技术公司 | Thermal isolation of flight recorder memory core |
| CN111386753B (en) * | 2017-10-27 | 2022-05-27 | L3技术公司 | Thermal isolation of flight recorder memory core |
| CN109962445A (en) * | 2017-12-25 | 2019-07-02 | 上海齐耀重工有限公司 | Marine protection device |
| CN110764438A (en) * | 2018-07-25 | 2020-02-07 | 南京市嘉隆电气科技有限公司 | Control signal method based on solid-state relay |
| CN109141539A (en) * | 2018-10-26 | 2019-01-04 | 中国科学院深海科学与工程研究所 | A kind of underwater Multifunctional AC motor control and test device |
| CN110058581A (en) * | 2019-04-15 | 2019-07-26 | 锡林郭勒职业学院 | A kind of electrical soft fault diagnosis device of digital quantity and its application method |
| CN110058581B (en) * | 2019-04-15 | 2023-11-14 | 锡林郭勒职业学院 | Digital electric soft fault diagnosis device and application method thereof |
| CN111131675A (en) * | 2019-12-30 | 2020-05-08 | 陕西格兰浮智能科技有限公司 | High-definition underwater network ball machine |
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