CN203895980U

CN203895980U - Marine controlling apparatus

Info

Publication number: CN203895980U
Application number: CN201420246712.7U
Authority: CN
Inventors: 黄国安; 李军; 史军川; 阮书标
Original assignee: Shanghai Lei Hua Marine Engineering Co Ltd
Current assignee: Shanghai Lei Hua Marine Engineering Co Ltd
Priority date: 2014-05-14
Filing date: 2014-05-14
Publication date: 2014-10-22
Anticipated expiration: 2024-05-14

Abstract

The utility model relates to a marine controlling apparatus, comprising a power supply circuit, a first voltage output circuit, at least a second voltage output circuit, a processor, a safety starting circuit, an automatic turn-off circuit and a fault monitor circuit. The processor outputs the first preset electric signals to the safety starting circuit. The safety starting circuit generates starting electric signals according to the first preset electric signals and outputs the starting electric signals to the second voltage output circuit, to open the second voltage output circuit. The automatic turn-off circuit receives turn-off electric signals from the processor and/or the fault monitor circuit, and turns off the first voltage output circuit and/or the second voltage output circuit according to the turn-off electric signals. According to the marine controlling apparatus provided by the utility model, security of a ship is improved.

Description

Marine control device

Technical Field

The invention relates to the technical field of ships, in particular to a ship control device.

Background

In a marine system, a microcomputer communication control center is generally directly connected with a switching power supply, most of the switching power supplies in the market at present have no automatic on and off function or only one total on and off function, but have many defects in practical application. For example, when a module in a marine system fails, the main processor controls the operating state of the failure indication signal lamp, and then a person turns off the corresponding output power supply according to the operating state of the failure indication signal lamp, so that there is a certain delay between the failure and the turning off of the output power supply due to human factors, and the delay may even cause an unexpected situation. In addition, when the power supply of the existing marine system is just turned on, the power supply supplies power to the main processor and other modules (such as an input board and an output board) connected with external devices, and because the main processor of the microcomputer communication control center is not initialized at this moment, the main processor cannot control other modules, and sometimes the system outputs an error signal at the moment of just turning on the power supply, thereby causing an unexpected situation.

The above is only for the purpose of assisting understanding of the technical aspects of the present invention, and does not represent an admission that the above is prior art.

Disclosure of Invention

The invention mainly aims to provide a marine control device, aiming at improving the safety of a ship.

In order to achieve the above object, the present invention provides a marine control apparatus including a power supply circuit, a first voltage output circuit, at least one second voltage output circuit, a processor, a safety start circuit, an automatic shutdown circuit, and a fault monitoring circuit, wherein,

the output end of the power supply circuit is respectively connected with the power supply ends of the first voltage output circuit, the second voltage output circuit, the safety starting circuit and the automatic turn-off circuit, and the output end of the first voltage output circuit is connected with the power supply end of the processor; the input end of the fault monitoring circuit is respectively connected with the output ends of the power supply circuit, the first voltage output circuit and the second voltage output circuit, and the output end of the fault monitoring circuit is connected with the input end of the automatic turn-off circuit; the input end of the safe starting circuit is connected with the output end of the processor, and the output end of the safe starting circuit is connected with the input end of the second voltage output circuit; the output end of the processor is connected with the input end of the automatic turn-off circuit, and the output end of the automatic turn-off circuit is respectively connected with the input ends of the first voltage output circuit and the second voltage output circuit;

the processor outputs a first preset electric signal to the safe starting circuit, the safe starting circuit generates a starting electric signal according to the first preset electric signal and outputs the starting electric signal to the second voltage output circuit so as to start the second voltage output circuit;

the automatic turn-off circuit receives a turn-off electrical signal from the processor and/or the fault monitoring circuit and turns off the first voltage output circuit and/or the second voltage output circuit according to the turn-off electrical signal.

Preferably, the power supply system further comprises a remote detection voltage regulating circuit, wherein a power supply end of the remote detection voltage regulating circuit is connected with an output end of the power supply circuit, and an output end of the remote detection voltage regulating circuit is respectively connected with input ends of the automatic turn-off circuit and the first voltage output circuit;

the remote detection voltage regulating circuit outputs a turn-off electric signal to the automatic turn-off circuit according to a voltage value of a preset target point, and the automatic turn-off circuit turns off the first voltage output circuit and/or the second voltage output circuit according to the turn-off electric signal;

the remote detection voltage regulating circuit outputs a voltage regulating electric signal to the first voltage output circuit according to the voltage value of a preset target point, and the first voltage output circuit regulates the output voltage according to the voltage regulating electric signal.

Preferably, the alarm device also comprises an alarm circuit, wherein the alarm circuit comprises a trigger control module and an alarm indication module,

the input end of the trigger control module is respectively connected with the processor and the output end of the fault monitoring circuit;

the trigger control module generates an alarm electric signal according to the trigger electric signal output by the processor and/or the fault monitoring circuit, and outputs the alarm electric signal to the alarm indication module so that the alarm indication module can send out an alarm indication.

Preferably, the alarm indication module comprises a buzzer sound generation sub-circuit and an LED prompt sub-circuit, wherein,

the buzzing sound generating sub-circuit generates buzzing sound according to the alarm electric signal;

the LED prompting sub-circuit comprises an LED lamp and controls the LED lamp to emit light according to the alarm electric signal.

Preferably, the power circuit comprises an input power control module, a filtering module for filtering, an overvoltage/overcurrent protection module for preventing overvoltage and/or overcurrent of input voltage, and an internal voltage stabilization module for generating working voltages of the safe starting circuit, the automatic turn-off circuit, the remote detection voltage regulation circuit and the alarm circuit; wherein,

the input end of the input power supply control module is respectively connected with a peripheral main power supply and a peripheral standby power supply, and outputs corresponding voltage to the filtering module according to the main power supply and the standby power supply, and the output end of the input power supply control module is respectively connected with the input ends of the fault monitoring circuit and the filtering module;

the output end of the filtering module is respectively connected with the input ends of the overvoltage/overcurrent protection module and the internal voltage stabilizing module;

the output end of the overvoltage/overcurrent protection module is respectively connected with the power supply ends of the first voltage output circuit and the second voltage output circuit;

the output end of the internal voltage stabilizing module is respectively connected with the power ends of the safety starting circuit, the automatic turn-off circuit, the remote detection voltage regulating circuit and the alarm circuit, and the output end of the internal voltage stabilizing module is connected with the input end of the fault monitoring circuit.

Preferably, the safety starting circuit comprises a processing module for receiving the first preset electric signal, a band-pass filtering module connected with an output end of the processing module, and a starting signal generating module connected with an output end of the band-pass filtering module; wherein,

the processing module is used for processing the first preset electric signal and then sending the first preset electric signal to the band-pass filtering module, the band-pass filtering module outputs a corresponding electric signal to the starting signal generating module according to the processed first preset electric signal, and the starting signal generating module generates and outputs a starting electric signal to the first voltage generating circuit according to the received electric signal.

Preferably, the processing module comprises a first resistor, a second resistor, a third resistor, a fourth resistor, a first comparator and a first capacitor, the secure boot circuit comprises a first power supply terminal for outputting a first voltage signal, a second power supply terminal for outputting a second voltage signal and a third power supply terminal for outputting a third voltage signal, wherein,

the first resistor is connected between the first power supply terminal and the negative input terminal of the first comparator;

one end of the second resistor is connected with the negative input end of the first comparator, and the other end of the second resistor is grounded;

the output end of the processor is connected with the positive input end of the first comparator, and the processor outputs a first preset electric signal to the positive input end of the first comparator;

the third resistor is connected between the first power supply end and the positive input end of the first comparator;

the fourth resistor is connected between the second power supply end and the output end of the first comparator;

one end of the first capacitor is connected with the output end of the first comparator, and the other end of the first capacitor is connected with the band-pass filtering module.

Preferably, the band-pass filtering module includes a first diode, a second capacitor, and a fifth resistor, wherein,

the anode of the first diode is connected with the output end of the processing module, and the cathode of the first diode is grounded;

one end of the fifth resistor is connected with the anode of the first diode, the other end of the fifth resistor is connected with the cathode of the second diode, and the anode of the second diode is connected with the input end of the starting signal generating circuit;

one end of the second capacitor is connected with the anode of the second diode, and the other end of the second capacitor is grounded.

Preferably, the start signal generating module includes a first zener diode, a sixth resistor, and a second comparator, wherein,

the anode of the voltage stabilizing diode is connected with the output end of the band-pass filtering module, and the cathode of the voltage stabilizing diode is connected with the positive input end of the second comparator;

the sixth resistor is connected between the second power supply terminal and the positive input terminal of the second comparator;

the negative input end of the second comparator is connected with the first power supply end;

the output end of the second comparator is connected with the input end of the second voltage output circuit, and the output end of the second comparator outputs a starting electric signal to the second voltage output circuit.

Preferably, the automatic turn-off circuit includes a first turn-off module for turning off the first voltage output circuit and a second turn-off module for turning off the second voltage output circuit, wherein,

the input end of the first turn-off module is connected with the output ends of the second voltage output circuit, the processor, the fault monitoring circuit and the remote detection voltage regulating circuit, and the first turn-off module turns off the first voltage output circuit according to turn-off electric signals received from the second voltage output circuit, the processor, the fault monitoring circuit and the remote detection voltage regulating circuit;

the input end of the second turn-off module is connected with the output ends of the second voltage output circuit, the processor, the fault monitoring circuit and the remote detection voltage regulating circuit, and the second turn-off module turns off the second voltage output circuit according to turn-off electric signals received by the second voltage output circuit, the processor, the fault monitoring circuit and the remote detection voltage regulating circuit.

According to the marine control device, the processor outputs the first preset electric signal to the safe starting circuit, the safe starting circuit generates the starting electric signal according to the first preset electric signal and outputs the starting electric signal to the second voltage output circuit to start the second voltage output circuit, so that the situation that the second voltage output circuit outputs voltage before the processor completes initialization to cause a system to output an error signal is avoided, an accident situation is avoided, and the safety of a ship is improved; in addition, the ship control device receives a shutdown electric signal from the processor and/or the fault monitoring circuit through the automatic shutdown circuit, and shuts off the first voltage output circuit and/or the second voltage output circuit according to the shutdown electric signal, so that the first voltage output circuit and/or the second voltage output circuit can be automatically shut off when a fault occurs, and the safety of a ship is improved.

Drawings

FIG. 1 is a schematic diagram of the electrical circuit of a marine control device according to an embodiment of the present invention;

FIG. 2 is a schematic diagram of a remote detection voltage regulator circuit according to an embodiment of the marine control apparatus of the present invention;

FIG. 3 is a schematic diagram of a trigger control module according to an embodiment of the marine control apparatus of the present invention;

FIG. 4 is a schematic diagram of an alarm indication module in an embodiment of the marine control apparatus of the present invention;

FIG. 5 is a schematic diagram of a safety start circuit according to an embodiment of the marine control apparatus of the present invention;

FIG. 6 is a schematic diagram illustrating the connection between the over-voltage/over-current protection module and the first and second voltage output circuits according to an embodiment of the marine control apparatus of the present invention;

FIG. 7 is a schematic diagram of an isolation module according to an embodiment of the marine control apparatus of the present invention;

fig. 8 is a schematic diagram of an automatic shutdown circuit according to an embodiment of the marine control apparatus of the present invention.

The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.

Detailed Description

It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

The invention provides a marine control device, referring to fig. 1, fig. 1 is a schematic circuit diagram of the marine control device in an embodiment of the invention, and in an embodiment, the marine control device includes a power supply circuit 10, a first voltage output circuit 20, at least one second voltage output circuit 30, a processor 40, a safety start circuit 50, an automatic shutdown circuit 60 and a fault monitoring circuit 70, wherein an output terminal of the power supply circuit 10 is connected to power terminals of the first voltage output circuit 20, the second voltage output circuit 30, the safety start circuit 50 and the automatic shutdown circuit 60, and an output terminal of the first voltage output circuit 20 is connected to a power terminal of the processor 40; the input end of the fault monitoring circuit 70 is connected to the output ends of the power supply circuit 10, the first voltage output circuit 20, and the second voltage output circuit 30, respectively, and the output end of the fault monitoring circuit 70 is connected to the input end of the automatic shutdown circuit 60; the input end of the safe start is connected with the output end of the processor 40, and the output end of the safe start circuit 50 is connected with the input end of the second voltage output circuit 30; the output end of the processor 40 is connected with the input end of the automatic turn-off circuit 60, and the output end of the automatic turn-off circuit 60 is respectively connected with the input ends of the first voltage output circuit 20 and the second voltage output circuit 30; the processor 40 outputs a first preset electrical signal to the safety starting circuit 50, and the safety starting circuit 50 generates a starting electrical signal according to the first preset electrical signal and outputs the starting electrical signal to the second voltage output circuit 30 to start the second voltage output circuit 30; the auto-shut down circuit 60 receives a shut down electrical signal from the processor 40 and/or the fault monitoring circuit 70 and shuts down the first voltage output circuit 20 and/or the second voltage output circuit 30 according to the shut down electrical signal.

In this embodiment, the power supply circuit 10 provides operating voltages to the first voltage output circuit 20, the second voltage output circuit 30, the safety start circuit 50, and the automatic shutdown circuit 60.

The fault monitoring circuit 70 monitors the operating states of the power supply circuit 10, the first voltage output circuit 20, and the second voltage output circuit 30 in real time, and determines whether the power supply circuit 10, the first voltage output circuit 20, and the second voltage output circuit 30 are operating abnormally, and if the power supply circuit 10, the first voltage output circuit 20, and the second voltage output circuit 30 are operating abnormally, generates a shutdown electrical signal, and outputs the shutdown electrical signal to the automatic shutdown circuit 60.

The processor 40 is the main processor 40 of the microcomputer communication control center in the marine system.

Specifically, the power supply circuit 10 includes an input power supply control module 11, a filtering module 12 for filtering, an overvoltage/overcurrent protection module 13 for preventing overvoltage and/or overcurrent of an input voltage, and an internal voltage stabilization module 14 for generating an operating voltage of the safety start circuit 50 and the automatic shutdown circuit 60; the input end of the input power control module 11 is respectively connected with a peripheral main power supply and a peripheral standby power supply, and outputs corresponding voltage to the filter module 12 according to the main power supply and the standby power supply; the output end of the input power control module 11 is connected with the input ends of the fault monitoring circuit 70 and the filter module 12, the output end of the filter module 12 is connected with the input ends of the overvoltage/overcurrent protection module 13 and the internal voltage stabilization module 14, the output end of the overvoltage/overcurrent protection module 13 is connected with the power ends of the first voltage output circuit 20 and the second voltage output circuit 30, the output end of the internal voltage stabilization module 14 is connected with the power ends of the safety start circuit 50 and the automatic turn-off circuit 60, and the output end of the internal voltage stabilization module 14 is connected with the input end of the fault monitoring circuit 70; input to the power control module 11.

In this embodiment, the peripheral main power supply and the backup power supply are both 27V. When the power supply system works, the main power supply 27V and the standby power supply 27V pass through the input power supply control module 11, and the modules monitor the output voltages of the main power supply and the standby power supply in real time, wherein when the voltage of the main power supply becomes low, the input power supply control module 11 can automatically switch the power supply to the standby power supply without damage, and in the preferred embodiment, the input power supply control module 11 can also output a fault alarm signal to the fault monitoring circuit 70; the input power control module 11 also outputs a fault alarm signal to the fault monitoring circuit 70 when the standby power supply voltage becomes low.

The input power control module 11 outputs 27V dc voltage to the filter module 12, and the filter module 12 outputs 27V dc voltage to the overvoltage/overcurrent protection module 13 and the internal voltage stabilization module 14 after common mode, differential mode filtering, transient protection, input surge current suppression, and the like.

The overvoltage/overcurrent protection module 13 mainly functions to prevent input overvoltage and overcurrent. When the input voltage is over-voltage and/or over-current, the input 27V direct current voltage is blocked and shut off by the over-voltage/over-current protection module 13. In a preferred embodiment, when the over-voltage/over-current protection module 13 turns off the input voltage, the state of the input voltage is still detected in real time, and when the over-voltage and over-current states disappear, the over-voltage/over-current protection module 13 releases the blocking off state, so that other circuits can work normally.

The internal voltage stabilization block 14 includes a first power terminal for outputting a first voltage signal, a second power terminal for outputting a second voltage signal, and a third power terminal for outputting a third voltage signal. In this embodiment, after the internal voltage stabilizing module 14 processes the input 27V dc voltage, the first power end outputs +5V voltage, the second power end outputs ± 24V voltage, and the third power end outputs ± 12V voltage, so as to be used by the safety starting circuit 50, the automatic shutdown circuit 60, the fault monitoring circuit 70, and the remote detection and voltage regulation circuit.

The number of the second voltage output circuits 30 can be set according to actual needs, and the embodiment is described by taking two second voltage output circuits 30 as an example.

In this embodiment, the first voltage output circuit 20 outputs +5V voltage for supplying power to the processor 40; the two second voltage output circuits 30 output +12V and-12V voltages, respectively, for powering peripheral devices (e.g., input and output boards).

When the marine control apparatus starts to operate, the power supply circuit 10 first supplies power to the first voltage output circuit 20, that is, first supplies power to the processor 40, so that the processor 40 completes initialization; when the processor 40 completes initialization, the processor 40 outputs a first predetermined electrical signal to the secure boot circuit 50. In this embodiment, the first predetermined electrical signal is a 25KHz pulse signal. When the safety starting circuit 50 receives the 25KHz pulse signal from the main processor 40, the safety starting circuit 50 generates a starting electric signal and outputs the starting electric signal to the second voltage output circuit 30 to turn on the second voltage output circuit 30. Therefore, in this embodiment, the safety starting circuit 50 can turn on the second voltage output circuits 30 according to the first preset electrical signal output by the main processor 40, so that the two second voltage output circuits 30 output +12V and-12V voltages, respectively. The safety start circuit 50 of this embodiment enables the main processor 40 to turn on +12V and-12V voltages, and the power module needs to receive a 25KHz pulse signal from the main processor 40 at a minimum period of 100ms in order to turn on the +12V and-12V voltages, so as to ensure that all peripheral devices (e.g., input and output boards) connected to the second voltage output circuit 30 are powered after the main processor 40 completes initialization, and to avoid the system from giving unexpected signals to important outputs, such as haloalkane fire suppressant release.

The above-mentioned fault monitoring circuit 70 monitors the output voltages of the first voltage output circuit 20 and the second voltage output circuit 30 in real time, and the voltage conditions of the input power control module 11 and the internal regulator module 14 in the power supply circuit 10, and when a fault occurs, the fault monitoring circuit 70 will send a shutdown electrical signal to the automatic shutdown circuit 60 for the automatic shutdown electrical signal to shut down the first voltage output circuit 20 and/or the second voltage output circuit 30.

The automatic shutdown circuit 60 is mainly used for receiving shutdown electric signals from the processor 40 and the fault monitoring circuit 70. When receiving a turn-off electrical signal related to the second voltage output circuit 30, turning off the second voltage output circuit 30; when receiving the shutdown signal related to the first voltage output circuit 20, the first voltage output circuit 20 and the second voltage output circuit 30 are shut down at the same time, so as to prevent accidents.

According to the marine control device, the processor 40 outputs the first preset electric signal to the safe starting circuit 50, the safe starting circuit 50 generates the starting electric signal according to the first preset electric signal and outputs the starting electric signal to the second voltage output circuit 30 to start the second voltage output circuit 30, so that the problem that the second voltage output circuit 30 outputs voltage before the processor 40 completes initialization to cause a system to output an error signal is avoided, an accident situation is avoided, and the safety of a ship is improved; in addition, the marine control device receives a shutdown electric signal from the processor 40 and/or the fault monitoring circuit 70 through the automatic shutdown circuit 60, and shuts down the first voltage output circuit 20 and/or the second voltage output circuit 30 according to the shutdown electric signal, so that the first voltage output circuit 20 and/or the second voltage output circuit 30 can be automatically shut down when a fault occurs, and the safety of the marine vessel is improved.

Further, the marine control device further comprises a remote detection voltage-regulating circuit 80, wherein a power supply end of the remote detection voltage-regulating circuit 80 is connected with an output end of the power supply circuit 10, and an output end of the remote detection voltage-regulating circuit 80 is respectively connected with input ends of the automatic turn-off circuit 60 and the first voltage output circuit 20;

the remote detection voltage regulating circuit 80 outputs a shutdown electric signal to the automatic shutdown circuit 60 according to the voltage value of the preset target point, and the automatic shutdown circuit 60 shuts down the first voltage output circuit 20 and/or the second voltage output circuit 30 according to the shutdown electric signal;

the remote detection voltage-regulating circuit 80 outputs a voltage-regulating electrical signal to the first voltage output circuit 20 according to the voltage value of the preset target point, and the first voltage output circuit 20 regulates the output voltage thereof according to the voltage-regulating electrical signal. In this embodiment, the output end of the internal voltage regulation module 14 is further connected to a power supply end of the remote detection voltage regulation circuit.

Specifically, referring to fig. 2, fig. 2 is a schematic diagram of a remote detection voltage regulation circuit in an embodiment of the marine control device of the present invention, and the remote detection voltage regulation circuit 80 includes a remote detection module 81 and an automatic voltage regulation module 82. The remote detection module 81 comprises a resistor R7, a resistor R8, a resistor R9, a voltage stabilizing diode VD2, a potentiometer RV1 and a comparator OP 3; one end of the resistor R7 is connected with the output end of the second voltage output circuit 30, the other end of the resistor R7 is connected with the negative electrode of the zener diode ZD2, and the positive electrode of the zener diode ZD2 is grounded; one end of the potentiometer RV1 is connected to the negative electrode of the zener diode ZD2, the other end is grounded, and the sliding end of the potentiometer RV1 is connected to the negative input end of the comparator OP3 through the resistor R8; a positive input of the comparator is connected to a remote target point to be measured via a resistor R9, and an output of the comparator is connected to an input of the automatic shutdown circuit 60 to control whether the automatic shutdown circuit 60 shuts down the first voltage output circuit 20 and/or the second voltage output circuit 30. The preset voltage value of the remote target point can be changed by the sliding potentiometer RV 1. In addition, the output end of the comparator is also connected with the input end of the automatic voltage regulating module 82 so as to control the automatic voltage regulating module 82 to carry out automatic voltage regulation.

In this embodiment, the resistor R7 is exemplified by the second voltage output circuit 30 connected to + 12V. In operation, after the +12V power supply passes through the resistor R7 and the zener diode ZD2, a constant voltage of 10V is output to the potentiometer RV1, and the center tap output voltage of the potentiometer RV1 is 4.9V by setting the position of the center tap (i.e., the sliding end) of the potentiometer RV 1. It should be noted that the center tap output voltage of the potentiometer RV1 can be set according to actual needs. The actual operating voltage value of the remote target point is set by potentiometer RV 1. When the remote sensing pin + SENSE detects that the voltage of the remote target point is less than the tap output voltage (i.e., 4.9V), the comparator OP3 outputs a low-level electrical signal to the automatic shutdown circuit 60.

The automatic voltage regulating module 82 comprises a resistor R10, a resistor R11, a comparator OP4, an A/D converter, a D/A converter and a single chip microcomputer, wherein the resistor R10 is connected between the negative input end and the output end of the comparator OP 4; one end of the resistor R11 is connected with the positive input end of the comparator OP4, and the other end is grounded; the negative input end of the comparator OP4 is further connected to a remote target detection point, where the remote target detection point is a detection point that needs to be subjected to a voltage test. The output end of the comparator OP4 is connected with the input end of the A/D converter, the output end of the A/D converter is connected with the input end of the singlechip, the output end of the singlechip is connected with the input end of the D/A, and the output end of the D/A is connected with the input end of the first voltage output circuit 20 so as to adjust the voltage of the first voltage output circuit 20; the input end of the single chip microcomputer is also connected with the output end of the remote detection module 81. The resistor R10, the resistor R11, and the comparator OP4 constitute a voltage follower.

When the automatic voltage regulating device works, the remote detection pin + SENSE of the automatic voltage regulating module 82 receives voltage from a remote target detection point, the voltage passes through the voltage follower and then outputs the voltage to the A/D converter, and the A/D converter digitizes a received voltage signal and then supplies the digitized voltage signal to the single chip microcomputer for collection and processing. The remote detection module 81 outputs a corresponding control signal to the single chip microcomputer, and the single chip microcomputer judges whether to perform pressure regulation processing according to the received control signal. For example, in this embodiment, when the remote detection module 81 outputs a low level signal to the single chip, the single chip determines that voltage regulation is required, and then the single chip calculates a voltage regulation value according to the collected voltage value of the remote target detection point, outputs the voltage regulation value to the D/a converter, processes the voltage regulation value by the D/a converter, and sends the voltage regulation value to the first voltage output module, so that the voltage regulation is performed by the first voltage output module, and the voltage value of the remote target detection point is equal to a preset value, in this embodiment, the preset value may be a preferred interval value, for example, may be +5V (error range is 5%). The regulation process is actually a PID regulation process. Preferably, an adjustment time may be preset in the single chip microcomputer, in this embodiment, the adjustment time is 500ms as an example, after the single chip microcomputer is adjusted for 500ms, if it is found through detection that the voltage at the remote target detection point is still outside +5V (error range is 5%), it is considered that the automatic voltage adjustment fails, at this time, the automatic voltage adjustment module 82 outputs a shutdown signal to the automatic shutdown circuit 60, so that the automatic shutdown circuit 60 shuts down the first voltage output module, thereby avoiding outputting an error signal due to unstable voltage of the main processor 40, and further avoiding occurrence of a serious consequence event.

Further, referring to fig. 3 and 4, fig. 3 is a schematic diagram of a trigger control module in an embodiment of the marine control device according to the present invention, fig. 4 is a schematic diagram of an alarm indication module in an embodiment of the marine control device according to the present invention, the marine control device further includes an alarm circuit 90, the alarm circuit 90 includes a trigger control module 91 and an alarm indication module 92, wherein an input end of the trigger control module 91 is connected to output ends of the processor 40 and the fault monitoring circuit 70, respectively; the trigger control module 91 generates an alarm electrical signal according to the trigger electrical signal output by the processor 40 and/or the fault monitoring circuit 70, and outputs the alarm electrical signal to the alarm indication module 92, so that the alarm indication module 92 sends out an alarm indication. In this embodiment, the output terminal of the internal voltage stabilizing module 14 is further connected to a power supply terminal of the alarm circuit.

Specifically, the alarm indication module 92 includes a buzzer sound generation sub-circuit 921 and an LED prompt sub-circuit 922, wherein the buzzer sound generation sub-circuit 921 generates buzzer sound according to the alarm electrical signal; the LED prompting sub-circuit 922 comprises an LED lamp and controls the LED lamp to emit light according to the alarm electric signal.

In this embodiment, when the processor 40 works abnormally or an emergency occurs and an alarm is required, or when the fault monitoring circuit 70 monitors that the marine control device works abnormally and an alarm is required, the processor 40 or the fault monitoring circuit 70 outputs a trigger electrical signal to the trigger control module 91.

Specifically, the trigger control module 91 includes a resistor R12, a resistor R13, a resistor R14, a resistor R15, a resistor R16, a resistor R17, a diode D3, a diode D4, a capacitor C2, a capacitor C3, a capacitor C4, a capacitor C5, a switch S1, a D flip-flop D1A, and a D flip-flop D1B, wherein one end of the resistor R12 is connected to a first power source terminal of the internal regulator module 14, and the other end is connected to a RESET pin of the D flip-flop D1A; one end of the capacitor C3 is connected to a RESET pin of the D flip-flop D1A, and the other end is grounded; the SET pin of the D flip-flop D1A is connected with the first power supply end of the internal voltage stabilization module 14, the DATA pin of the D flip-flop D1A is respectively connected with one end of a resistor R13 and one end of a capacitor C4, the other end of the resistor R13 is connected with the first power supply end, the other end of the capacitor C4 is connected with one end of the resistor 14 and the SET pin of the D flip-flop D1B, and the other end of the resistor R14 is connected with the first power supply end; the Q pin of the D flip-flop D1A is connected with the CLK pin of the D flip-flop D1B; a DATA pin of the D trigger D1B is connected with a first power supply end, a RESET pin is connected with the anode of the diode D4, and the cathode of the diode D4 is connected with the first power supply end; one end of the capacitor C8 is connected with the anode of the diode D4, and the other end is grounded; the resistor R17 is connected between the first power supply terminal and the anode of the diode D4; the resistor R16 is connected between the cathode of the diode D3 and the anode of the diode D4; one end of the resistor R15 is connected to the anode of the diode D3, and the other end is connected to a first power supply end; one end of the switch is connected with the cathode of the diode D3, and the other end is grounded.

The RESET pin of the D flip-flop D1A is also used to receive an external Trigger signal Trigger Ext; the cathode of the diode D3 is also used for connecting an external noise reduction signal ext.Buzzer Silence; an output Q pin of the D trigger D1A is connected to the LED prompt sub-circuit 922, so that an LED lamp of the LED prompt sub-circuit 922 emits light; the output Q pin of the D flip-flop D1B is connected to the buzzer sound generation sub-circuit 921 for the buzzer sound generation sub-circuit 921 to generate buzzer sound; processor 40 and fault monitoring circuit 70 output trigger electrical signals to the CLK and DATA pins of D flip-flop D1A.

The operating principle of the trigger control module 91 is as follows: when the external Trigger signal Trigger Ext is at a low level, the output Q pin of the D flip-flop D1A outputs a high level, and the LED prompting sub-circuit 922 receives the high level signal from the Trigger control module 91 and then the LED thereof emits light. At the same time, the CLK of the input pin of the D flip-flop D1B changes from low to high, which latches the input DATA, so that the Q output of D1B changes to high, causing the buzzer alarm circuit 90 to alarm. When the ALARM CLK input clock signal changes from low to high while the data ALARM DATA input is at low level, the D flip-flop D1A outputs Q as high level to trigger the LED ALARM indicating circuit to ALARM. At the same time, the input CLK of the D flip-flop D1B goes from low to high, which will latch the input DATA, causing the output Q of the D flip-flop D1B to go high, causing the buzzer generating sub-circuit 921 to alarm. When the level of the CLK pin of D flip-flop D1A changes and the DATA pin input is high, the Q output of D flip-flop D1A is low and the LED prompt sub-circuit 922 clears the alarm. The buzzer sound generation sub-circuit 921 will still alarm. To eliminate the buzzer sound generation sub-circuit 921 alarm, the local key S1 needs to be pressed or eliminated by setting the external sound deadening signal ext. The local key S1 may also simultaneously eliminate the alarm of the buzzer sound generating sub-circuit 921 and the LED prompting sub-circuit 922, or through an external mute signal ext.

Specifically, the LED prompting sub-circuit 922 includes a resistor R18, a resistor R19, a resistor R20, a resistor R21, a resistor R22, a comparator OP5, a capacitor C6, a light emitting diode D5, a zener diode ZD3 and a transistor Q1, wherein the resistor R18 is connected between a positive input terminal of the comparator OP5 and the first power supply terminal, the resistor R19 and the capacitor C6 are connected in parallel and then connected between the positive input terminal of the comparator OP5 and ground, an output terminal of the comparator OP5 is connected to a negative electrode of the light emitting diode D5, the resistor R20 is connected between a positive electrode of the light emitting diode D5 and a base of the transistor Q1, and the resistor R21 is connected between a base of the transistor Q1 and the second power supply terminal; the anode of the voltage-stabilizing diode ZD3 is connected with the base electrode of the triode Q1, and the cathode of the voltage-stabilizing diode ZD3 is connected with a second power supply end; the resistor R22 is connected between the second power supply terminal and the emitter of the transistor Q1.

The Q pin of the D flip-flop D1A of the trigger control module 91 is connected to the negative input terminal of the comparator OP5, and the signal output from the Q pin of the D flip-flop D1A is set as the LED FAULT IN signal. And the collector of the triode Q1 is used for outputting an LED Fault signal Fault LED ext.

When the LED FAULT LED lighting circuit works, the trigger control module 91 outputs an LED FAULT IN signal to the negative input end of the comparator OP5, the voltage output by the first power supply end is divided by the resistor R18 and the resistor R19 to obtain a preset voltage value, if the voltage of the LED FAULT IN signal is larger than the preset voltage value, the comparator OP5 outputs a low level, the light-emitting diode D5 is lightened, the triode Q1 is conducted, and a FAULT signal FAULT LED ext is sent to external equipment for use. If the voltage of the LED FAULT IN signal is less than the preset voltage value, the output of the comparator OP4 is at a high level, and the LED D5 is turned off. Meanwhile, the triode Q1 is cut off, and a Fault-free signal Fault LED Ext is output. The resistor R22 and the triode Q1 form a driving circuit of external equipment; the zener diode ZD3 acts as a clamp and the resistor R21 acts as a shunt.

Specifically, the buzzer sound generation sub-circuit 921 includes a nand gate D2A, a nand gate D2B, a nand gate D2C, a nand gate D2D, a resistor R23, a resistor R24, a resistor R25, a resistor R26, a resistor R27, a resistor R28, a resistor R29, a zener diode ZD4, a zener diode ZD5, a transistor Q2, a comparator OP6, a comparator OP7, a capacitor C7, a capacitor C8, and a buzzer U1.

The positive input end of the comparator OP6 is connected to the positive input end of the comparator OP5 and the negative input end of the comparator OP7 respectively, the resistor R23 is connected between the output end of the comparator and the base of the triode Q2, and the resistor R24 is connected between the second power supply end and the base of the triode Q2; the anode of the voltage-stabilizing diode ZD4 is connected with the base electrode of the triode Q2, and the cathode of the voltage-stabilizing diode ZD4 is connected with a second power supply end; the resistor R25 is connected between the second power supply terminal and the emitter of the transistor Q2, and the collector of the transistor Q2 is used for outputting the Buzzer Alarm Ext. The negative input terminal of the comparator OP6 is connected to the Q pin of the D flip-flop D1B of the trigger control block 91. Similarly, a buzzer fault alarm driving circuit composed of an OC gate output comparator OP6, a resistor R23, a resistor R24, a zener diode ZD4, a resistor R25 and a triode Q2 is mainly used for an external buzzer, and the working principle of the circuit is basically the same as that of the LED prompting sub-circuit 922, and is not described herein again.

The connection relationship among the nand gate D2A, the nand gate D2B, the nand gate D2C, the nand gate D2D, the resistor R26, the resistor R27, the resistor R28, the resistor R29, the zener diode ZD5, the comparator OP7, the capacitor C7 and the capacitor C8 can be referred to fig. 4. A buzzer U1 sounding circuit is formed by the NAND gates D2A, D2B, D2C, D2C, R26, R27, C7 and C8, and a 4.1KHz signal is generated to be used by an internal buzzer U1. The intermittent signal of the buzzer U1 is 3 Hz. The Buzzer Fault IN signal is the output of the trigger control block 91, which is connected to NAND gate D2A and NAND gate D2D (the high level indicates a Fault). The Buzzer Fault IN is connected with the NAND gate D2A to mainly play a role IN enabling, namely, the Buzzer U1 sound production circuit generates a 4.1KHz signal, the Buzzer Fault IN is at a high level when a Fault occurs and enables the Buzzer U1 to sound, and the Buzzer Fault IN is at a low level when no Fault occurs and enables the Buzzer U1 not to sound, so that power consumption of a power supply can be reduced. The Buzzer Fault IN and the output of NAND gate D2C are connected to NAND gate D2D, and only when there is a Fault, the 4.1KHz sounding signal output by NAND gate D2C is output. And closing the output when no fault exists. The 4.1KHz sounding signal passes through a comparator OP7, a resistor R28 and a resistor R29 to drive a buzzer U1. The resistor R28 and the resistor R29 play a role in limiting current, the voltage stabilizing diode ZD5 plays a role in clamping protection, and the input driving voltage of the buzzer U1 is clamped to 2.4V, so that the buzzer is prevented from sounding and being damaged due to sudden voltage change.

Further, referring to fig. 5, fig. 5 is a schematic diagram of a safety starting circuit in an embodiment of the marine control device according to the present invention, in which the safety starting circuit 50 includes a processing module 51 for receiving a first preset electrical signal, a band-pass filtering module 52 connected to an output end of the processing module 51, and a starting signal generating module 53 connected to an output end of the band-pass filtering module 52; the processing module 51 processes the first preset electrical signal and then sends the first preset electrical signal to the band-pass filtering module 52, the band-pass filtering module 52 outputs a corresponding electrical signal to the starting signal generating module 53 according to the processed first preset electrical signal, and the starting signal generating module 53 generates and outputs a starting electrical signal to the first voltage generating circuit according to the received electrical signal.

Specifically, the processing module 51 includes a first resistor R1, a second resistor R2, a third resistor R3, a fourth resistor R4, a first comparator OP1 and a first capacitor C1, and the internal regulator module 14 includes a first power supply terminal for outputting a first voltage signal, a second power supply terminal for outputting a second voltage signal and a third power supply terminal for outputting a third voltage signal, wherein the first resistor R1 is connected between the first power supply terminal and the negative input terminal of the first comparator OP 1; one end of the second resistor R2 is connected with the negative input end of the first comparator OP1, and the other end is grounded; the output end of the processor 40 is connected to the positive input end of the first comparator OP1, and the processor 40 outputs a first preset electrical signal to the positive input end of the first comparator OP 1; the third resistor R3 is connected between the first power terminal and the positive input terminal of the first comparator OP 1; the fourth resistor R4 is connected between the second power terminal and the output terminal of the first comparator OP 1; one end of the first capacitor C1 is connected to the output end of the first comparator OP1, and the other end is connected to the band-pass filtering module 52.

In this embodiment, the positive input terminal of the first comparator OP1 receives a first predetermined electrical signal, i.e. a 25KHz pulse signal, from the processor 40, the voltage output by the first power terminal of the internal voltage regulator circuit is divided by the first resistor R1 and the second resistor R2 and then outputs a predetermined voltage to the negative input terminal of the first comparator OP1, and when the voltage at the positive input terminal of the first comparator OP1 is greater than the predetermined voltage value, the first comparator OP1 outputs a high level + 24V; when the voltage at the positive input terminal of the first comparator OP1 is smaller than the predetermined voltage value, the first comparator OP1 outputs a low level of-24V. Therefore, the first comparator OP1 outputs a 25KHz pulse signal with amplitude of 0-24V, which becomes a 25KHz pulse signal with amplitude of-24V-0 after passing through the first capacitor C1, i.e. the processing module 51 receives the 25KHz pulse signal from the processor 40 and outputs the 25KHz pulse signal with amplitude of-24V-0 to the band pass filter module 52.

Specifically, the band-pass filtering module 52 includes a first diode D1, a second diode D2, a second capacitor C2 and a fifth resistor R5, wherein the anode of the first diode D1 is connected to the output terminal of the processing module 51, and the cathode is grounded; one end of the fifth resistor R5 is connected with the anode of the first diode D1, the other end is connected with the cathode of the second diode D2, and the anode of the second diode D2 is connected with the input end of the starting signal generating circuit; one end of the second capacitor C2 is connected to the anode of the second diode D2, and the other end is grounded.

In this embodiment, the band-pass filtering module 52 receives the pulse signal from the processing module 51, and the pulse signal passes through the fifth resistor R5 and the second diode D2 and then connects to the second capacitor C2. The band-pass filter module 52 is a narrow-band low-pass filter, and converts the pulse signal into a voltage signal. In this embodiment, the band-pass filter module 52 outputs a-20V voltage signal to the start signal generating module 53.

Specifically, the enable signal generating module 53 includes a first zener diode ZD1, a sixth resistor R6, and a second comparator OP2, wherein an anode of the zener diode is connected to the output terminal of the band-pass filtering module 52, and a cathode of the zener diode is connected to the positive input terminal of the second comparator OP 2; the sixth resistor R6 is connected between the second power terminal and the positive input terminal of the second comparator OP 2; the negative input terminal of the second comparator OP2 is connected to the first power supply terminal; the output end of the second comparator OP2 is connected to the input end of the second voltage output circuit 30, and the output end of the second comparator OP2 outputs a start-up electrical signal to the second voltage output circuit 30.

In this embodiment, the enable signal generating module 53 receives a voltage signal of-20V from the band-pass filter module 52, after the voltage signal passes through the first zener diode ZD1, the voltage of the cathode of the first zener diode ZD1 is-5V, and since the voltage of the negative input terminal of the second comparator OP2 is 5V, the second comparator OP2 outputs a low level.

Preferably, the second voltage output circuit 30 is connected to the power circuit 10 through a relay, and the safety starting circuit 50 provided in this embodiment controls the actuation of the relay. When the output of the second comparator OP2 of the secure boot circuit 50 is at a low level, the relay is closed, so that the power circuit 10 is connected to the power terminal of the second voltage output circuit 30, i.e., the power circuit 10 provides power for the second voltage output circuit 30, and the second voltage output circuit 30 outputs a corresponding voltage.

Specifically, referring to fig. 6, fig. 6 is a schematic diagram illustrating a connection principle between the overvoltage/overcurrent protection module and the first and second voltage output circuits in an embodiment of the marine control apparatus according to the present invention, and a circuit diagram illustrating a connection between the overvoltage/overcurrent protection module 13 and the first and second voltage output circuits 20 and 30 is shown in fig. 6. Referring to fig. 6, the first voltage output circuit 20 includes an isolation module DC1, a capacitor C14, a capacitor C15, a capacitor C16, a capacitor C17, a capacitor C18, a capacitor C19, and a diode D13, wherein a GATE IN pin of the isolation module DC1 is connected to an output terminal of the automatic shutdown circuit 60, and the automatic shutdown circuit 60 outputs a corresponding electrical signal to control the isolation module DC1 to turn on or off. When the GATE IN pin input of the isolation block DC1 is low, the OUT + pin of the isolation block DC1 does not output voltage, i.e., the first voltage output circuit 20 is turned off. The second voltage output circuit 30 has the same shutdown principle as the first voltage output circuit 20, and is not described herein again. In this embodiment, the second voltage output circuit 30 includes an isolation module DC2 and an isolation module DC3, wherein the isolation module DC2 outputs +12V voltage and the isolation module DC3 outputs-12V voltage.

After the direct current 27V voltage is filtered by the module DC4 and is subjected to overvoltage/overcurrent protection, a direct current 27V voltage is output, and then the direct current 27V voltage is respectively connected to the isolation module DC1, the isolation module DC2 and the isolation module DC 3. The diode D13, the diode D16 and the diode D20 mainly serve to isolate the Gate IN pins of the modules from each other and prevent various faults from occurring when the Gate IN pin of one module is short-circuited with the + INPUT pin. Wherein + SENSE and-SENSE of the isolation module DC1 are used for remote voltage sensing, mainly sensing the remote target point voltage. TRIM is the value of the output voltage used to regulate DC 1.

Referring to fig. 6 again, the relays are the switch S1 and the switch S2 in fig. 6, and the safety starting circuit 50 controls the switches S1 and S2 to be turned on and off. When the second comparator OP2 of the secure boot circuit 50 outputs a low level, the switches S1 and S2 are closed, so that the power supply circuit 10 is connected to the power source terminal of the second voltage output circuit 30.

Specifically, referring to fig. 7, fig. 7 is a schematic diagram of an isolation module in an embodiment of the marine control device of the present invention, and a specific circuit diagram of the isolation module DC1, the isolation module DC2, and the isolation module DC3 is shown in fig. 7. When the MOSFET switch is turned on, the quantized energy is transferred from the input DC power source to the LC resonant circuit. The resonant circuit consists of the inherent leakage inductance of transformer T1 and the secondary capacitance C of T1. After the MOSFET is conducted, the current with almost half-wave sine wave flows through the switch tube, so that the switch tube is conducted under zero current, and when the current drops to zero, the switch tube is turned off. In this circuit, since the rectifier tube D1 allows only unidirectional energy transfer, it is impossible to generate full wave resonance, or bidirectional energy transfer. A low pass filter (L0, C0) following the resonant capacitor C is used to reduce the ripple of the output dc voltage. After the zero-current switching technology is adopted, the input energy can be transmitted to the output end almost without loss. Meanwhile, conduction noise and radiation noise can be greatly reduced.

Further, the automatic shutdown circuit 60 includes a first shutdown module 61 for shutting down the first voltage output circuit 20 and a second shutdown module 62 for shutting down the second voltage output circuit 30, wherein an input terminal of the first shutdown module 61 is connected with output terminals of the second voltage output circuit 30, the processor 40, the fault monitoring circuit 70 and the remote detection voltage regulating circuit 80, and the first shutdown module 61 shuts down the first voltage output circuit 20 according to shutdown electrical signals received from the second voltage output circuit 30, the processor 40, the fault monitoring circuit 70 and the remote detection voltage regulating circuit 80; an input terminal of the second shutdown module 62 is connected to output terminals of the second voltage output circuit 30, the processor 40, the fault monitoring circuit 70 and the remote detection voltage regulating circuit 80, and the second shutdown module 62 shuts down the second voltage output circuit 30 according to shutdown electrical signals received from the second voltage output circuit 30, the processor 40, the fault monitoring circuit 70 and the remote detection voltage regulating circuit 80.

Referring to fig. 8, fig. 8 is a schematic diagram illustrating an automatic shutdown circuit in an embodiment of the marine control device according to the present invention, in this embodiment, the first shutdown module 61 includes a nand gate D3B, a not gate D3C, an analog switch D3H, an analog switch D3I, a resistor R38, a resistor R39, a resistor R40, a resistor R41, a resistor R42, a resistor R43, a resistor R44, a transistor Q5, a transistor Q6, an optocoupler D11, a diode D10, and a capacitor C10, and a connection relationship between components of the first shutdown module 61 may refer to fig. 8. The collector of the transistor Q6 is connected to the Turn-off CTRL1 pin of the first voltage output circuit 20, and when the transistor Q6 is turned off, the first voltage output circuit 20 operates normally.

The first shutdown module 61 operates as follows: the input end of the not gate D3C is connected to the output end of the remote detection module 81, when the remote detection pin + SENSE of the remote detection module 81 detects that the voltage at the remote detection target point is greater than the preset voltage at the negative input end of the comparator OP3, the comparator OP3 outputs a high level, and outputs a low level after passing through the not gate D3C, and the output of the nand gate D3B is a high level. The input of the CTRL4 is high level, so that the analog switch D3I is closed, a +12V power supply flows to the transmitting end of the optocoupler D11 through a resistor R41, and the output of the optocoupler D11 is conducted; then the +24V power is directly grounded through the resistor R43, the transistor Q6 is turned off, and the first voltage output circuit 20 operates normally because the terminal Turn-off CTRL1 is an OC output. The resistor R38 and the capacitor C10 form a low-pass filter, and are mainly used for preventing accidental and wrong turn-off caused by the fact that the circuit has a smooth voltage spike.

When the remote sensing pin + SENSE of the remote sensing module 81 SENSEs that the voltage of the remote sensing target point is greater than the preset voltage of the negative input terminal of the comparator OP3, the output of the not gate D3C is a high level according to the above analysis. When the automatic voltage regulation of the automatic voltage regulation module 82 fails, a voltage regulation failure signal is output to an input terminal of the nand gate D3B, i.e., the pin terminal of CTRL2 in fig. 8; secondly, when the internal circuit has a serious fault, a serious fault signal is also output to the CTRL2 pin terminal; again, the turn off signals for the local switch and the remote switch will be output to the CTRL2 pin. In this embodiment, the voltage regulation failure signal and the major fault signal also belong to shutdown signals, and the shutdown signals are set to high levels. Therefore, when a shutdown signal is input to the pin terminal of CTRL2, CTRL2 will be changed to a high level, so that the output of the corresponding nand gate D3B is a low level, and the working principle of the subsequent circuits is the same as that of the above analysis, which is not described herein again, and finally the output of the first voltage output circuit 20 is turned off, and the power supply to the main processor 40 is stopped, and meanwhile, the internal voltage stabilizing circuit still supplies power to the fault alarm circuit 90, and an alarm signal is given.

The second turn-off module 62 includes a resistor R30, a resistor R31, a resistor R32, a resistor R33, a resistor R34, a resistor R35, a resistor R36, a resistor R37, a comparator OP8, a nand gate D3A, a nor gate D3D, a potentiometer RV2, a not gate D3E, an analog switch D3F, an analog switch D3G, an optocoupler D6, a diode D7, a diode D8, a diode D9, a transistor Q3, and a transistor Q4, and the connection relationship of the components of the second turn-off module 62 can refer to fig. 8. The collector of the transistor Q4 is connected to the Turn-off CTRL2 pin of the second voltage output circuit 30, and when the transistor Q6 is turned off, the first voltage output circuit 20 operates normally. When the transistor Q6 is turned on, the Turn-off CTRL2 pin of the second voltage output circuit 30 is grounded, and when the Turn-off CTRL2 pin is grounded, the second voltage output circuit 30 is turned off.

The second shutdown module 62 operates as follows: after the potentiometer RV2 is connected to the third power supply terminal +12V of the internal voltage regulator circuit, the voltage V1 is output at the center tap, and since the negative input terminal of the comparator OP8 is connected to the first power supply terminal +5V of the internal voltage regulator circuit through the resistor R30, when the voltage of +5V is greater than the voltage V1 (which means that the output voltage of the power supply +12V drops below 11.75V), the comparator OP8 outputs a low level signal. The high level is output after passing through a NAND gate D3A; after the output voltage passes through the nor gate D3D, a low level is output, then the analog switch D3G is turned off, and the +12V power does not flow to the emitting end of the optocoupler D6 through the resistor R32, that is, the output of the optocoupler D6 is not turned on (i.e., the collector and the emitter of the output end are not turned on); then the +24V supply turns on transistor Q4 through resistor R35, diode D9, and resistor R36, and the voltage at the base of transistor Q4 is 0.7V; when transistor Q4 is turned on, Turn-off CTRL2 will Turn on diode D7 and the collector and emitter of transistor Q4 to ground, thereby turning off second voltage output circuit 30. Meanwhile, when the output of the nor gate D3D is low level and becomes high level after passing through the nor gate D3E, the analog switch D3F is turned off, and the +12V power flows to the resistor R34 and the base of the triode Q3 through the resistor R33, so that the triode Q3 is turned on, and then the DC Fail is grounded through the collector and emitter of the triode Q3, and outputs an alarm signal to the main processor 40. When the +5V voltage is less than the voltage V1, the analysis principle is the same as above, and all circuits operate normally, which is not described herein again.

In addition, the fault signal of the main processor 40, the fault signals from other internal circuits, and the turn-off signals of the local switch and the remote switch are input to an input terminal (i.e., the CTRL1 pin terminal in fig. 8) of the nand gate D3D. When the pin terminal of CTRL1 receives a fault signal of main processor 40, a fault signal sent by other internal circuits, and a turn-off signal of the local switch and the remote switch, CTRL1 will be changed to a high level, and then the corresponding nor gate D3D outputs a low level, and the operating principle of the subsequent circuits is the same as that of the above analysis, which is not described herein again, so that the output of second voltage output circuit 30 is finally turned off, and an alarm signal is output to the main processor 40 to disable the dc.

It should be noted that, the second voltage output circuit 30 is described by taking the output of +12V as an example, and the principle of the second voltage output circuit 30 with the output of-12V is the same as the above analysis, and is not described herein again.

The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims

1. A marine control device, comprising a power supply circuit, a first voltage output circuit, at least one second voltage output circuit, a processor, a safety start circuit, an automatic shut down circuit and a fault monitoring circuit,

2. The marine control device according to claim 1, further comprising a remote detection voltage-regulating circuit, wherein a power supply end of the remote detection voltage-regulating circuit is connected with an output end of the power supply circuit, and an output end of the remote detection voltage-regulating circuit is connected with input ends of the automatic turn-off circuit and the first voltage output circuit, respectively;

3. The marine control device of claim 2 further comprising an alarm circuit comprising a trigger control module and an alarm indication module, wherein,

4. The marine control of claim 3 wherein said alarm indication module comprises a buzzer tone generation sub-circuit and an LED prompt sub-circuit, wherein,

5. The marine control device of claim 3, wherein the power circuit comprises an input power control module, a filtering module for filtering, an over-voltage/over-current protection module for preventing over-voltage and/or over-current of the input voltage, and an internal voltage stabilization module for generating the operating voltages of the safety start circuit, the automatic turn-off circuit, the remote detection voltage regulation circuit, and the alarm circuit; wherein,

6. The marine control device of any one of claims 1 to 5, wherein said safety startup circuit comprises a processing module for receiving said first preset electrical signal, a band-pass filtering module connected to an output of said processing module, and a startup signal generating module connected to an output of said band-pass filtering module; wherein,

7. The marine control device of claim 6 wherein said processing module includes a first resistor, a second resistor, a third resistor, a fourth resistor, a first comparator, and a first capacitor, said secure boot circuit including a first power supply terminal for outputting a first voltage signal, a second power supply terminal for outputting a second voltage signal, and a third power supply terminal for outputting a third voltage signal,

8. Marine control apparatus as claimed in claim 7, characterised in that the band pass filter module comprises a first diode, a second capacitor and a fifth resistor, wherein,

9. The marine control apparatus of claim 8 wherein said enable signal generating module comprises a first zener diode, a sixth resistor, and a second comparator, wherein,

10. Marine control apparatus according to any one of claims 2 to 5, characterised in that the automatic shut-off circuit comprises a first shut-off module for shutting off the first voltage output circuit and a second shut-off module for shutting off the second voltage output circuit, wherein,