CN106501169B - The early warning system and operation method of the anti-electrolytic etching of benthoscope - Google Patents

The early warning system and operation method of the anti-electrolytic etching of benthoscope Download PDF

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CN106501169B
CN106501169B CN201611021256.6A CN201611021256A CN106501169B CN 106501169 B CN106501169 B CN 106501169B CN 201611021256 A CN201611021256 A CN 201611021256A CN 106501169 B CN106501169 B CN 106501169B
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circuit
electrolytic etching
current
chip
early warning
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CN106501169A (en
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张伟
杨申申
程斐
胡震
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702th Research Institute of CSIC
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    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N17/00Investigating resistance of materials to the weather, to corrosion, or to light
    • G01N17/02Electrochemical measuring systems for weathering, corrosion or corrosion-protection measurement
    • GPHYSICS
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    • G08BSIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
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Abstract

The invention discloses the early warning system and operation method of a kind of anti-electrolytic etching of benthoscope, system includes early warning circuit;Early warning circuit includes electrolytic etching current detection circuit;Electrolytic etching current detection circuit includes accessory power supply, high-power resistance zener diode and ammeter;The anode of accessory power supply is connected to the ground terminal of current supply circuit;High-power resistance and ammeter are in series between the cathode and shell of accessory power supply;Voltage-stabiliser tube is parallel to ammeter both ends;When electrically isolating between current supply circuit and shell, the resistance value of the equivalent isolation resistance between current supply circuit and shell is infinity;When generating electrolytic etching between current supply circuit and shell, then the resistance value of equivalent isolation resistance is electrically connected between shell and current supply circuit between 0 and infinity.The present invention is simple and effective, does not generate interference to benthoscope electrical system, is suitble to the monitoring of benthoscope electrolytic etching.

Description

The early warning system and operation method of the anti-electrolytic etching of benthoscope
Technical field
The present invention relates to anti-electrolysis corrosion technologies, and in particular to a kind of early warning system of the anti-electrolytic etching of benthoscope and Operation method.
Background technique
Benthoscope is a kind of underwater robot using DC power supply power supply.Modern benthoscope system is very multiple Miscellaneous, many equipment and route are directly exposed in briny environment, including the extraneous factors such as temperature, humidity, salinity and electrochemistry are all Submersible can be caused to corrode.In the prior art, the hands such as manufacturing process usually are improved by using more corrosion-resistant material Section reduces corrosion bring harm to delay to corrode.
Bigger to benthoscope harm is electrolytic etching.The electrolytic etching of submersible refers to electrical system route or sets Biggish potential difference is formed by submersible shell and seawater for because of reasons such as pressure distortion, humidity, leakage and electrical overlap joints, and Lasting high current is generated, strong electrolytic etching is caused to route and equipment.
Experiments have shown that serious electrolytic etching can corrode the copper rod of finger thickness nearly within the short time of dozens of minutes To the greatest extent.For common electrical equipment, electrolytic etching will cause equipment damage, influence submersible normal function.It is resistance to manned capsule etc. For ballasting, shell will affect its voltage endurance capability by electrolytic etching, reduce its service life.If it is rotten that electrolysis occurs for crossing cabin part Erosion, extraneous high pressure sea water easily penetrate into cabin, and consequence is hardly imaginable.
The electrolytic etching degree of benthoscope is monitored in real time, timely early warning fault message, it is rotten to electrolysis is generated The measures such as isolation are taken in the circuit of erosion, prevent corrosion from aggravating, can play the role of providing for a rainy day.The anti-electrolysis of benthoscope is rotten The early warning system of erosion is the indispensable component part of modern benthoscope.
Summary of the invention
In view of the deficiencies of the prior art, the invention discloses the early warning systems and fortune of a kind of anti-electrolytic etching of benthoscope Row method.
Technical scheme is as follows:
A kind of early warning system of the anti-electrolytic etching of benthoscope, including benthoscope shell and multiple current supply circuits; Current supply circuit both ends of power is parallel with multiple groups load;It is characterized by also including early warning circuits;The early warning circuit includes electrolysis Corrosion current detection circuit;The electrolytic etching current detection circuit include accessory power supply, high-power resistance zener diode and Ammeter;The anode of accessory power supply is connected to the ground terminal of current supply circuit;It is in series between the cathode and shell of accessory power supply big Power resistor and ammeter;Voltage-stabiliser tube D is parallel to the both ends ammeter A;When being electrically isolated between current supply circuit and shell, power supply The resistance value of equivalent isolation resistance between circuit and shell is infinity;When generating electrolytic etching between current supply circuit and shell, Then the resistance value of the equivalent isolation resistance is electrically connected between shell and current supply circuit between 0 and infinity.
Its further technical solution is that early warning circuit includes power circuit, single-chip microcontroller and is connected to more on single-chip microcontroller Group channel selection circuit;The electrolytic etching current detection circuit is connected with single-chip microcontroller;Multiple groups channel selection circuit with it is multiple Current supply circuit corresponds, and each channel selection circuit controls its corresponding current supply circuit and connects with electrolytic etching current detection circuit Logical, then single-chip microcontroller detects the electric current of this current supply circuit;Single-chip microcontroller is to electricity measured by electrolytic etching current detection circuit Flow into the analysis of row data and operation;Power circuit provides working power for circuit each in system.
Its further technical solution is, the power circuit include power supply, the first isolating chip, decompression chip, Second isolating chip and voltage stabilizing chip;Power supply includes 24V DC voltage and battery;The type of first first isolating chip It number is FKS-2W, the input pin of the first isolating chip accesses 24V DC voltage, the output pin output of the first isolating chip 12V DC voltage;It is depressured the model RT7272 of chip, is depressured the input pin access battery and 12V DC voltage of chip, drop The switched pins of chip are pressed to export 5V DC voltage;The model IBS-1W of second isolating chip, the input of the second isolating chip Pin accesses 5V DC voltage, and the input pin of the second isolating chip exports 9V DC voltage, as accessory power supply;Voltage stabilizing chip Model 1117, the input pin of voltage stabilizing chip accesses 5V DC voltage, and the output pin of voltage stabilizing chip exports 3.3V direct current Voltage is to single-chip microcontroller.
Its further technical solution is that the channel selection circuit uses the optical relay conduct of model AQW214A Channel gating switch to be checked;The first pin and third pin of optical relay are connected to the two-way output end of single-chip microcontroller;Light The second pin of relay and the 4th pin are connected to the ground terminal of microcontroller power supply;5th pin of optical relay or the 7th Pin is connected to channel to be checked all the way;6th pin of optical relay and the 8th pin Pin are connected to accessory power supply anode.
Its further technical solution be further include electrolytic current detection circuit;The electrolytic current detection circuit includes Model ISO-A8-P1-O4 analog quantity Isolation Amplifier Module, the input pin of Isolation Amplifier Module are connected to optical relay, will The current signal that optical relay is exported is isolated and is amplified, and is converted into voltage signal, and the output of Isolation Amplifier Module is drawn Foot is connected to the AD sense channel of single-chip microcontroller.
Its further technical solution is, zener diode be connected to Isolation Amplifier Module input terminal and ground terminal it Between;It further include high-power resistance, high-power resistance is connected in electrolytic current detection circuit.
Its further technical solution is that the single-chip microcontroller is the model based on 32 Cortex-M3 The single-chip microcontroller of STM32F103RBT6.
Its further technical solution is that early warning circuit further includes the serial communication circuit for being connected to single-chip microcontroller;The string Mouth communicating circuit includes the RS-485 transceiver of the model ADM2687E of AD company.
A kind of operation method of the early warning system based on the above-mentioned anti-electrolytic etching of benthoscope, early warning system are also set up There is display panel, information indicator light, power switch, band switch are installed on display panel;The reading end of ammeter is installed on On display panel;
Band switch control channel selection circuit;Optional channel includes each current supply circuit, automatic detecting pattern and sky Shelves mode;Information indicator light has multiple, respectively corresponds each channel, when channel is gated by band switch, corresponding informance refers to Show that lamp is lighted;
When power switch is connected, system default enters automatic detecting pattern;Single-chip microcontroller to multiple groups channel selection circuit into Row timing controlled, allows it to circuit sequentially on-off, and all current supply circuit timesharing of submersible are accessed electrolytic etching current detection circuit; Current loop then has electric current generation, the electrolytic etching of the current institute's sense channel of ammeter real-time display in case of electrolytic etching Electric current provides intuitive data foundation for driver;Electric current generates voltage signal and is input to list by conversion, isolation and amplification Piece machine, single-chip microcontroller will test the control system that result is real-time transmitted to submersible, show for control system by calculating and filtering Show, save and decision;
When submersible is worked, by rotating band switch, selection enters automatic detecting pattern, manual detection mode Or neutral mode;
When entering manual detection mode, by rotating band switch, to the electrolytic etching electric current of a certain special modality into Row detection;
When entering neutral mode, then stop detecting.
The method have the benefit that:
The present invention makes current supply circuit have a lower reference electricity by the way that current supply circuit ground terminal is introduced 9V regulated power supply Flat, to shell overlap joint or leakage occur for current supply circuit arbitrary node, when generating electrolytic etching, all can form electric current by 9V power supply Access, the size for measuring electric current can assess the electrolytic etching degree of current current supply circuit, issue warning information, taken in time Effect measure prevents failure further expansion.Accessory power supply method is simple and effective, will not generate to benthoscope electrical system dry It disturbs, is highly suitable for the monitoring of benthoscope electrolytic etching.It is rotten based on the anti-electrolysis of benthoscope designed by this method The early warning system circuit of erosion is simple, and component is seldom, and an accessory power supply can be detected the electrolysis of all current supply circuits of submersible Corrosion, rapid sensitive, and there is no detection dead zones.Unique band switch form, may be implemented unlimited number of current supply circuit Switching.System versatility is good, is used directly for the anti-electrolytic etching to any benthoscope and carries out early warning.
Detailed description of the invention
Fig. 1 is the anti-electrolytic etching early warning system block diagram of benthoscope.
Fig. 2 is the schematic illustration of electrolytic etching current detection circuit.
Fig. 3-1 is the block diagram of power circuit.
Fig. 3-2 is the circuit connection diagram of power supply.
Fig. 3-3 is the circuit connection diagram of the first isolating chip.
Fig. 3-4 is the circuit connection diagram for being depressured chip.
Fig. 3-5 is the circuit connection diagram of the second isolating chip.
Fig. 3-6 is the circuit connection diagram of voltage stabilizing chip.
Fig. 4-1 is the schematic diagram of channel switching circuit.
Fig. 4-2 is the circuit diagram of optical relay.
Fig. 4-3 is the schematic diagram of electrolytic current detection circuit.
Fig. 5 is the schematic diagram of single-chip microcontroller.
Fig. 6 is the schematic diagram of serial communication circuit.
Specific embodiment
Benthoscope includes benthoscope shell and multiple current supply circuits.Each current supply circuit both ends of power is parallel with Multiple groups load.Each current supply circuit is all used as a selector channel in the detection.
Fig. 1 is the anti-electrolytic etching early warning system block diagram of benthoscope.As shown in Figure 1, the anti-electrolytic etching of benthoscope Early warning system include early warning circuit and display panel.
Early warning circuit includes single-chip microcontroller, the channel selection circuit being connected on single-chip microcontroller and electrolytic etching current detecting electricity Road.It further include power circuit.
Single-chip microcontroller carries out data analysis and operation.Power circuit provides working power for circuit each in system.Channel choosing Selecting circuit has multiple groups, corresponds with current supply circuit.Its corresponding current supply circuit is accessed single-chip microcontroller by every group of channel selection circuit, So that electric current of the single-chip microcontroller to this channel detects.Electrolytic etching current detection circuit be installed on shell and current supply circuit it Between, whether detect between shell and each current supply circuit has electric current to flow through.
Further include serial communication circuit, is connected to single-chip microcontroller, the control system for system of the present invention and submersible Implement communication between system.
Early warning circuit further includes battery voltage detection circuit and voltage detection circuit,
In order to easy to operate, early warning system is additionally provided with display panel, and information indicator light, power supply are equipped on display panel Switch, band switch;The reading end of ammeter is also installed on display panel.
Fig. 2 is the schematic illustration of electrolytic etching current detection circuit.As shown in Fig. 2, benthoscope includes deep sea diving Hydrophone shell and multiple current supply circuits.Each both ends current supply circuit power supply U1 are parallel with multiple groups load Z1~Zn.
It further include electrolytic etching current detection circuit, electrolytic etching current detection circuit includes accessory power supply U2, high-power Resistance R2, ammeter A and voltage-stabiliser tube.The anode of accessory power supply U2 is connected to the ground terminal of current supply circuit.Accessory power supply U2's is negative High-power resistance R2 and ammeter A are in series between pole and shell.It reveals or overlaps when submersible power positive end and to shell, lead to Excessive power resistance is divided, and electrolytic etching current detection circuit is protected.Voltage-stabiliser tube D is parallel to the both ends ammeter A.
When being electrically isolated between current supply circuit and shell, equivalent isolation resistance R+, R- between current supply circuit and shell, The resistance value of Rx is infinity, that is, breaking between current supply circuit and shell, electrolytic etching at this time will not occur, and is powered Circuit, shell, electrolytic etching current detection circuit cannot form complete circuit, so electrolytic etching current detection circuit is without electricity Stream.
Once the positive and negative terminal of current supply circuit power supply U1 or be parallel to the both ends current supply circuit power supply U1 multiple groups load Z1~ Arbitrary node in Zn, the i.e. arbitrary node of endpoint Power+ to Power- in Fig. 1 circuit overlap shell or seawater is revealed, Electrolytic etching can be then generated between current supply circuit and shell, and at this time the resistance value of equivalent isolation resistance R+, R-, Rx 0 and infinite Between big, it is electrically connected between shell and current supply circuit.Then current supply circuit, equivalent isolation resistance R+, R-, Rx, shell, electrolysis are rotten Erosion current detection circuit can form complete circuit, will be generated by accessory power supply U2 in electrolytic etching current detection circuit Electric current.Electrolytic etching degree is bigger, and speed is faster, then the electric current generated is bigger.Pass through the detection to size of current, so that it may sentence The degree of disconnected current loop electrolytic etching, adopts remedial measures in time.
In the present embodiment, accessory power supply U2 is 9V regulated power supply.
Fig. 3-1 is the block diagram of power circuit.As shown in figure 3-1, power circuit include the first isolating chip, decompression chip, Second isolating chip and voltage stabilizing chip.Power supply includes 24V DC power supply and battery.24V DC power supply passes through the first isolation Chip is depressured as 12V.Battery and 12V DC power supply input decompression chip, are depressured chip for voltage and are reduced to 5V, 5V is straight later Galvanic electricity pressure exports 9V DC voltage by the second isolating chip, and as boost voltage, while 5V DC voltage passes through pressure stabilizing core Piece, output 3.3V direct voltage output to single-chip microcontroller.
Fig. 3-2~Fig. 3-6 is the schematic diagram of the various pieces of power circuit.
Fig. 3-2 is the circuit connection diagram of power supply.The power supply of this system is 24V DC power supply, is also connected with electricity Pond, battery are signal source battery and emergency cell on submersible, can in the event of a power failure directly be system power supply.In Fig. 1 Battery voltage detection circuit and voltage detection circuit can respectively to herein battery and power supply voltage detect. Its principle is the common prior art, is no longer described in detail.
Fig. 3-3 is the circuit connection diagram of the first isolating chip.First isolating chip model FKS-2W, input pin are logical Connecting terminal P2 is crossed, connecting terminal P1 shown in Fig. 3-2 is accessed, accesses 24V voltage, output pin exports 12V voltage.First every Off-chip piece will give system power supply after 24V isolated from power, this is to when detecting road 24V current supply circuit, be avoided that short circuit occurs It is dangerous.
Fig. 3-4 is the circuit connection diagram for being depressured chip.In the present embodiment, it is depressured the model RT7272 of chip, is depressured The input pin of chip accesses 12V voltage by port Power, the port Power being connected in Fig. 3-3 in Fig. 3-3, The switched pins for being depressured chip export 5V voltage.
On the one hand decompression chip provides power supply for I-V analog isolation module and ammeter, on the other hand pass through voltage stabilizing chip It generates 3.3V voltage and provides power supply for single-chip microcontroller.The decompression chip of model RT7272 be it is a efficiently, high power, Width funtion it is defeated Enter, the module of pressure stabilizing output.Its input voltage range can be system while guaranteeing system voltage variation from 4.5V to 36V Stable operating voltage is provided.
Fig. 3-5 is the circuit connection diagram of the second isolating chip.The model IBS-1W of second isolating chip, input pin The 5V DC voltage that access decompression chip is exported, output pin exports 9V DC voltage, as electrolytic etching current detecting Accessory power supply U2 in circuit.It since system Faradaic current is very small, is easy by external interference, therefore uses the second isolated core Piece generates the 9V voltage after isolation, as accessory power supply, guarantees to generate stable Faradaic current.
Fig. 3-6 is the circuit connection diagram of voltage stabilizing chip.The model 1117 of voltage stabilizing chip, input terminal input decompression chip The 5V DC voltage exported, output pin export 3.3V DC voltage, power to single-chip microcontroller.
Fig. 4-1~4-3 is the schematic diagram of the various pieces of channel selection circuit.
There are multiple current supply circuits in system, if each current supply circuit is as a selector channel, anti-electrolytic etching The working method of early warning system is that all channel cycles gating is examined successively for single-chip microcontroller timing;Or the selection according to driver, Special modality is gated.
It is that the ground terminal of the current supply circuit power supply U1 in the channel is connected to accessory power supply by the method that a certain channel gates The anode of U2, and be also turned on shell and electrolytic etching current detection circuit, i.e., it is current supply circuit to be detected is rotten by electrolysis Erosion current detection circuit is connected to shell.Electric current will be generated in electrolytic etching current detection circuit at this time, passes through judgement detection electricity The size of stream can determine whether the channel electrolytic etching degree.
Fig. 4-1 is the schematic diagram of channel switching circuit.The gating in channel uses the optical relay of model AQW214A, should Relay has two contacts, small in size, low in energy consumption, is convenient for computer drives, and the leakage current of only 1uA, even if to this The detection of micro-current will not impact.It is a part of channel switching circuit shown in Fig. 4-1, connects there are two light relay Device,
Fig. 4-2 is the circuit diagram of optical relay, and the first pin and third pin of optical relay are two contacts Control terminal is directly exported control by single-chip microcontroller;Its 5th pin and the 7th pin are the input terminals of two contacts, are connect respectively each Channel to be checked, i.e. each optical relay can be responsible for that two-way channel to be checked is respective to be turned on or off;Its 6th pin and 8th pin is the output end of two contacts, and the output of all contacts all accesses the positive terminal of accessory power supply.Single-chip microcontroller according to The selection of panel band switch calculates the channel currently selected, controls corresponding relay contact conducting, connects channel to be checked The anode for entering accessory power supply, by channel detection circuit for access to be checked.Benefit using this small-sized optical relay is, if circuit Plate space allows, and can satisfy the testing requirements in all channels of submersible.
In the present embodiment, system shares 16 tunnels channel to be checked, therefore is alternatively switched using 8 optical relays.
Fig. 4-3 is the schematic diagram of electrolytic current detection circuit.In order to reduce the consumption of accessory power supply, the inspection of electrolytic etching electric current The detection electric current very little that slowdown monitoring circuit generates, is microampere order.In order to improve detection accuracy and reliability, electrolytic current detection circuit In use model ISO-A8-P1-O4 analog quantity Isolation Amplifier Module along source company, input pin is connected to light relay Current signal is isolated and is amplified by device, is converted into voltage signal, and output end is connected to the AD sense channel of single-chip microcontroller, Ammeter is in series at its ground terminal.Its input range 0-2mA exports 0-5V.The analog quantity Isolation Amplifier Module is to auxiliary electricity 3000VDC tri- can be achieved between source, analog input and output to be isolated, it is ensured that the reliability of detection.
In addition, submersible 24V or 110V etc. generates leakage in order to prevent between power positive ends and shell, cause to detect electric current It is very big, circuit is damaged, electrolytic current detection circuit additionally uses safeguard measure, the i.e. input terminal in analog quantity Isolation Amplifier Module It is connected with zener diode D2 between ground terminal, overlaps or reveals when power positive end generates shell, cause to detect electric current liter Gao Shi, the zener diode D2 in parallel with detection input carry out clamper to voltage, guarantee that detection electric current is put in analog quantity isolation In the range of big module allows, while zener diode D2 is shunted, and is fallen current drain by simultaneously high-power resistance.
It further include processor circuit.Processor circuit is the core of anti-electrolytic etching early warning system, including is based on 32 The STM32F103RBT6 single-chip microcontroller of Cortex-M3, Fig. 5 are the schematic diagrames of single-chip microcontroller.Each pin designations in comparative diagram 5 can will be The various pieces of system are connected on single-chip microcontroller, and the connection method of pin can also refer to the technical manual of single-chip microcontroller, herein no longer It repeats.The single-chip microcontroller has peripheral hardware abundant, it can be achieved that low-power consumption mode, can be realized online programming and debugging.Its built-in 2 12 A/D converters, the sampling time most short needs 1us, eliminates individual A/D conversion chip, to simplify circuit, improves System reliability.Processor circuit completes the functions such as A/D conversion, filtering processing, logical operation and information output.
Early warning circuit further includes the serial communication circuit for being connected to single-chip microcontroller.Fig. 6 is the schematic diagram of serial communication circuit.See The data such as Faradaic current will be passed to control system and show and protect by Fig. 6, system of the present invention with control system real-time communication Deposit, this requires anti-electrolytic etching early warning systems accomplish with control system it is completely isolated, otherwise when early warning system itself is electrolysed corruption When losing larger, it will lead to control system electrolytic etching enhancing, bring extreme difficulties to troubleshooting effort.Therefore anti-electric in guarantee While solution corrosion early warning system isolated from power, also to guarantee that serial communication will also be isolated.Serial communication circuit uses AD company ADM2687E type RS-485 transceiver, which can realize 5000V signal and isolated from power.When submersible power supply system disconnects When, 9V reserve battery starts to power, and does not need to communicate with control system at this time, and computer disconnects serial communication circuit power supply, Reduce system power dissipation.
When the system works, it is divided into three kinds of operating modes: automatic detecting pattern, manual detection mode and neutral mode.It is aobvious Show panel band switch can be unlimited circulation rotating, operator by rotation band switch, control channel selection circuit, Channel selecting is carried out, each current supply circuit in the alternatively channel being mentioned above, automatic detecting pattern and neutral gear mould are removed Formula is also handled respectively as a channel, and operator only needs to switch clockwise or counterclockwise, so that it may in automatic mold It is switched between formula, neutral gear and each sense channel.Information indicator light can the currently selected channel of real-time display.It is opened according to wave band The suitable counter clockwise direction of rotation is closed, channel from left to right or from right to left switches over accordingly.
Automatic detecting pattern is to allow it to circuit sequentially on-off one group of channel selection circuit timing controlled by single-chip microcontroller, All current supply circuit timesharing of submersible are accessed into electrolytic etching current detection circuit, current loop, will in case of electrolytic etching Electric current generation is had, the electrolytic etching electric current in digital ammeter real-time display current detection channel provides intuitively for driver Data foundation.Electric current generates the suitable voltage signal for being suitble to monolithic machine testing, single-chip microcontroller by conversion, isolation and amplification By calculating and filter, it will test result and be real-time transmitted to underwater vehicle control system, show, save and decision for control system. It is mounted with reserve battery on circuit boards, when needing to carry out malfunction elimination, the entire power supply system of submersible can be powered off, by standby It is early warning system power supply with battery, ensure that malfunction elimination is gone on smoothly.
This system operation method is: automatic detecting pattern is defaulted as after system starting, computer timing owns submersible Channel cycle switching access electrolytic etching current detection circuit, the electrolytic etching electricity in ammeter real-time display current detection channel Stream, provides intuitive data foundation for driver.Electrolytic etching electric current is adopted by conversion, isolation and amplification by single-chip microcontroller Collection, and calculated and filtered, by serial communication circuit, it will test result and be real-time transmitted to underwater vehicle control system, for latent Hydrophone control system shows, saves and decision.
Driver can be then switched over, display surface by band switch if it is desired to persistently detect to a certain special modality Plate has corresponding channel indicator light to be shown.
The present invention is simple and effective, will not generate interference to benthoscope electrical system, be highly suitable for deep sea diving The monitoring of device electrolytic etching.Simple, first device based on the anti-electrolytic etching early warning system circuit of benthoscope designed by this method Part is seldom, and an accessory power supply can be detected the electrolytic etching of all current supply circuits of submersible, rapid sensitive, and there is no detections Dead zone.Unique band switch form, may be implemented the switching of unlimited number of current supply circuit.System versatility is good, Ke Yizhi It connects and carries out early warning for the anti-electrolytic etching to any benthoscope.
What has been described above is only a preferred embodiment of the present invention, and present invention is not limited to the above embodiments.It is appreciated that this The other improvements and change that field technical staff directly exports or associates without departing from the spirit and concept in the present invention Change, is considered as being included within protection scope of the present invention.

Claims (8)

1. a kind of early warning system of the anti-electrolytic etching of benthoscope, which is characterized in that including benthoscope shell and multiple Current supply circuit;Current supply circuit both ends of power is parallel with multiple groups load;It is characterized by also including early warning circuits;The early warning electricity Road includes electrolytic etching current detection circuit;The electrolytic etching current detection circuit includes accessory power supply, high-power resistance, steady Press diode and ammeter;The anode of accessory power supply is connected to the ground terminal of current supply circuit;The cathode and shell of accessory power supply it Between be in series with high-power resistance and ammeter;Zener diode is parallel to ammeter both ends;When electric between current supply circuit and shell When sexual isolation, the resistance value of the equivalent isolation resistance between current supply circuit and shell is infinity;When between current supply circuit and shell Electrolytic etching is generated, then the resistance value of the equivalent isolation resistance electrically connects between shell and current supply circuit between 0 and infinity It connects;
Early warning circuit includes power circuit, single-chip microcontroller and the multiple groups channel selection circuit being connected on single-chip microcontroller;The electrolysis is rotten Erosion current detection circuit is connected with single-chip microcontroller;Multiple groups channel selection circuit and multiple current supply circuits correspond, each channel Selection circuit controls its corresponding current supply circuit and electrolytic etching current detection circuit is connected, then single-chip microcontroller is to this current supply circuit Electric current is detected;Single-chip microcontroller carries out data analysis and operation to electric current measured by electrolytic etching current detection circuit;Power supply Circuit provides working power for circuit each in system.
2. the early warning system of the anti-electrolytic etching of benthoscope as described in claim 1, which is characterized in that the power circuit Including power supply, the first isolating chip, decompression chip, the second isolating chip and voltage stabilizing chip;Power supply includes 24V direct current Voltage and battery;The input pin access 24V of the model FKS-2W of first first isolating chip, the first isolating chip are straight The output pin of galvanic electricity pressure, the first isolating chip exports 12V DC voltage;It is depressured the model RT7272 of chip, is depressured chip Input pin access battery and 12V DC voltage, be depressured the switched pins output 5V DC voltage of chip;Second isolating chip Model IBS-1W, the input pin of the second isolating chip accesses 5V DC voltage, and the input pin of the second isolating chip is defeated 9V DC voltage out, as accessory power supply;The input pin of the model 1117 of voltage stabilizing chip, voltage stabilizing chip accesses 5V direct current Pressure, the output pin of voltage stabilizing chip export 3.3V DC voltage to single-chip microcontroller.
3. the early warning system of the anti-electrolytic etching of benthoscope as described in claim 1, which is characterized in that the channel selecting Circuit is using the optical relay of model AQW214A as channel gating switch to be checked;The first pin and third of optical relay Pin is connected to the two-way output end of single-chip microcontroller;The second pin of optical relay and the 4th pin are connected to microcontroller power supply Ground terminal;5th pin of optical relay or the 7th pin are connected to channel to be checked all the way;6th pin of optical relay Accessory power supply anode is connected to the 8th pin.
4. the early warning system of the anti-electrolytic etching of benthoscope as claimed in claim 3, which is characterized in that further include electrolysis electricity Current detection circuit;The electrolytic current detection circuit includes model ISO-A8-P1-O4 analog quantity Isolation Amplifier Module, isolation The input pin of amplification module is connected to optical relay, and the current signal that optical relay is exported is isolated and is amplified, and It is converted into voltage signal, the output pin of Isolation Amplifier Module is connected to the AD sense channel of single-chip microcontroller.
5. the early warning system of the anti-electrolytic etching of benthoscope as claimed in claim 3, which is characterized in that zener diode connects It is connected between the input terminal of Isolation Amplifier Module and ground terminal;It further include high-power resistance, high-power resistance is connected on electrolysis electricity In current detection circuit.
6. the early warning system of the anti-electrolytic etching of benthoscope as described in claim 1, which is characterized in that the single-chip microcontroller is The single-chip microcontroller of model STM32F103RBT6 based on 32 Cortex-M3.
7. the early warning system of the anti-electrolytic etching of benthoscope as described in claim 1, which is characterized in that early warning circuit also wraps Include the serial communication circuit for being connected to single-chip microcontroller;The serial communication circuit includes the RS-485 transmitting-receiving of model ADM2687E Device.
8. a kind of operation method of the early warning system based on the anti-electrolytic etching of benthoscope described in claim 1, feature It is, early warning system is additionally provided with display panel, and information indicator light, power switch, band switch are equipped on display panel;Electricity The reading end of flow table is installed on display panel;
Band switch control channel selection circuit;Optional channel includes each current supply circuit, automatic detecting pattern and neutral gear mould Formula;Information indicator light has multiple, respectively corresponds each channel, when channel is gated by band switch, corresponding informance indicator light It lights;
When power switch is connected, system default enters automatic detecting pattern;Single-chip microcontroller determines multiple groups channel selection circuit When control, allow it to circuit sequentially on-off, all current supply circuit timesharing of submersible accessed into electrolytic etching current detection circuits;Currently Then there is an electric current generation in circuit in case of electrolytic etching, the electrolytic etching electric current of the current institute's sense channel of ammeter real-time display, Intuitive data foundation is provided for driver;Electric current generates voltage signal and is input to single-chip microcontroller by conversion, isolation and amplification, Single-chip microcontroller will test the control system that result is real-time transmitted to submersible, show, save for control system by calculating and filtering And decision;
When submersible is worked, by rotate band switch, selection enter automatic detecting pattern, manual detection mode or Neutral mode;
When entering manual detection mode, by rotating band switch, the electrolytic etching electric current of a certain special modality is examined It surveys;
When entering neutral mode, then stop detecting.
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