Marine system engine starting interlocking control system and method

Abstract

The invention discloses a simulation ship system engine starting interlocking control system and method. Comprising a power supply module, a rotating speed acquisition module M2, a frequency signal generator M3, a PLC central processor M1, a local / remote control switch SB1, a first starting control loop, a second starting control loop, a relay module, an ammeter P, a contactor module and a simulation test terminal module composed of multiple groups of test terminals. According to the invention, by simulating a ship system engine starting interlocking signal on the test bed, the action conditions of corresponding protection components and indicating lamps can be checked, so that a powerful guarantee is provided for the safety protection of a ship system and an engine, and the safe and stable starting capability of the engine under a safe condition is ensured; and equipment damage or safety accidents caused by misoperation or system faults are prevented.

Description

Technical Field

[0001] The present invention relates to the field of analog control technology, and in particular to a ship system engine starting interlock control system and method. Background Art

[0002] Related technologies point out that the engine start interlock is the core of ship system start-up, ensuring that the power output matches the ship status. The collaborative design of ship systems and engines is the key to the safe, compliant and reliable operation of ships. If the engine start-up interlock conditions are not met, such as the winch device is not disengaged, the shutters are not opened, the gearbox / clutch is not in neutral, the rudder angle and propeller status are not returned to zero, etc., the engine cannot be started, causing the ship to lose power; the control of the ship system has authority constraints on the engine start interlock, thereby ensuring the safety of the entire ship and avoiding sudden output of the ship system engine causing the ship system to lose control. Currently, there is a lack of verification means to verify the correctness of the ship system engine start interlock control. Once a ship system engine start interlock control failure occurs, resulting in engine start failure, the operating engineer cannot handle and troubleshoot the fault in a timely manner, and may not even be clear about the engine start interlock system mechanism classification and post-trigger processing steps and unlocking methods, which may lead to equipment damage or safety accidents due to improper operation or system failure. Therefore, there is an urgent need for a control system and method that can simulate the ship system engine start interlock. Summary of the Invention

[0003] The present invention aims to address at least one of the technical problems existing in the prior art. To this end, the present invention provides a simulated ship system engine start interlock control system. This system can simulate ship system engine start interlock signals on a test bench to check the operation of corresponding protective components and indicator lights. This provides strong protection for ship systems and engines, ensuring the engine can start safely and stably under safe conditions, and preventing equipment damage or safety accidents caused by misoperation or system failures.

[0004] The present invention also proposes a ship system engine starting interlock control method based on the above control system.

[0005] The simulated ship system engine starting interlock control system according to the first aspect of the present invention includes a power supply module, a speed acquisition module M2, a frequency signal generator M3, a PLC central processing unit M1, a local / remote control switch SB1, a first starting control circuit, a second starting control circuit, a relay module, an ammeter P, a contactor module, and a simulation test terminal module consisting of multiple groups of test terminals;

[0006] The power module is connected in series with the PLC central processor M1 in the circuit through the circuit breaker QF, the power isolation module MO, and the power isolation module MO is connected in series with the input and output circuits of the PLC central processor;

[0007] The speed acquisition module M2 is connected in series to the circuit between the input terminal of the PLC central processor and the power isolation module MO. The frequency signal generator M3 is electrically connected to the speed acquisition module M2. The speed acquisition module M2 is used to acquire the signal of the frequency signal generator M3 or the engine speed. The speed acquisition module M2 is used to acquire the engine speed signal. This is a mature technology and will not be described here. The ammeter P is connected to the PLC central processor M1 to display the analog speed value.

[0008] The analog test terminal module is used to output analog signals;

[0009] The local / remote control switch SB1 is used to select whether to use the local position or remote position signal to drive the engine start interlock control, and output it to the PLC central processor;

[0010] The PLC central processor is used to process the data transmitted by the speed acquisition module M2, and process the data to determine whether the engine is running successfully; it is used to output a control signal based on the received analog signal to drive the relay module and the contactor module to operate, thereby driving the starter motor to work through the first starting control circuit or the second starting control circuit, thereby starting the engine.

[0011] According to a second aspect of the present invention, a method for controlling an engine start interlock of a simulated ship system based on the above control system comprises the following steps:

[0012] S1 Preparation before simulation test:

[0013] (1) The comprehensive fault relay KA3 does not operate, that is, the engine has no basic fault;

[0014] (2) No sine wave signal from the frequency signal generator M3 is output to the speed acquisition module M2, or the speed value is lower than 300-500 rpm by observing the ammeter P. The engine does not run successfully, that is, the relay coil KA4 does not operate and the engine does not start; the short-circuit wire shorts the test terminals X19 and X20;

[0015] (3) The relay module does not operate;

[0016] When (1) and (2) or (3) are met at the same time, the standby relay in the relay module is actuated. After the PLC central processor receives the signal, the standby indicator light in the indicator light module is turned on. The vehicle is ready and the simulation test begins.

[0017] S2. Select local operation or remote control operation through the local / remote control switch SB1. If local operation is selected, short-circuit the test terminals X1 and X2; if remote control operation is selected, short-circuit the test terminals X21 and X22 or the test terminals X23 and X24;

[0018] S3. Operate the test light button SB2 to observe whether the indicator light in the indicator light module is lit. If so, each start interlock circuit is operating normally and the conditions for the simulation experiment are met, and the process proceeds to step S5. If not, the start interlock circuit corresponding to the indicator light in the indicator light module that is not lit is faulty, and the operator should troubleshoot and repair the fault.

[0019] S4. Short-circuit a group of simulation test terminals, and the corresponding relay in the relay module is energized and activated, and the corresponding simulation signal is input to the PLC central processor M1. Based on the received simulation signal, the PLC central processor M1 drives the corresponding indicator light in the indicator light module to flash, and the buzzer HK1 to sound. At the same time, the contacts of the corresponding relay in the starting control circuit are activated, and the starting contactor is energized and activated, thereby starting the motor and driving the engine to rotate. The speed acquisition module M2 collects the engine speed and transmits it to the PLC central processor M1. After receiving the data, the PLC central processor M1 compares it with the speed threshold set internally. If the engine speed is less than or equal to the preset threshold, the engine fails to start, maintains the original speed, and enters the next simulation test of the starting interlock circuit. After all interlock circuit simulation tests are completed, the staff will check the cause of the interlock circuit failure corresponding to the simulation signal. After the fault is eliminated, the simulation test of this simulation signal will be performed again; if the engine speed is greater than or equal to the preset threshold, the engine starts successfully, and the starting interlock circuit corresponding to the simulation signal operates normally.

[0020] S5. Input the response signal to the PLC central processor M1. After receiving the signal, the PLC central processor M1 drives the indicator light module to flash and turn the light flat, and cancels the buzzer HK1 at the same time.

[0021] S6. Remove the short-circuit wire and input a reset signal to the PLC central processor M1. After the PLC central processor receives the signal, the control system returns to its initial state, turns off the power, and the simulation test ends.

[0022] Compared to existing technologies, this invention can guide operators to clearly understand the classification of ship system and engine interlocks, and understand the processing steps and unlocking methods after the engine start interlock system is triggered. This allows operators to quickly resolve start interlock failures encountered in actual operations. In addition, this simulation test control system preemptively avoids the problem of interlock signal failures in ship system engines, ensuring the reliability and stability of engine start interlock control, reducing safety hazards and costs, alleviating operator labor intensity, and improving operator skills.

[0023] Additional aspects and advantages of the present invention will be set forth in part in the description which follows and, in part, will be obvious from the description which follows, or may be learned by practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic diagram of an intelligent control principle of an engine start interlock control system for a simulated ship system according to one embodiment of the present invention;

[0025] Figure 2 This is a schematic diagram of a first starting control circuit of an engine starting interlock control system for a simulated ship system according to one embodiment of the present invention;

[0026] Figure 3 1 is a schematic diagram of a second starting control circuit of an engine starting interlock control system for a simulated ship system according to an embodiment of the present invention;

[0027] Figure 4 Schematic diagram of contacts of a local / remote control switch SB1 of an engine start interlock control system simulating a ship system according to an embodiment of the present invention;

[0028] Figure 5 The figure is a flow chart of a method for controlling engine start-up interlock of a simulated ship system according to an embodiment of the present invention. DETAILED DESCRIPTION

[0029] The following describes embodiments of the present invention in detail, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and are not to be construed as limiting the present invention.

[0030] The disclosure below provides many different embodiments or examples for realizing different structures of the present invention. In order to simplify the disclosure of the present invention, the components and settings of specific examples are described below. Of course, they are merely examples and are not intended to limit the present invention. In addition, the present invention may repeat reference numbers and / or letters in different examples. This repetition is for the purpose of simplicity and clarity and does not in itself indicate the relationship between the various embodiments and / or settings discussed. In addition, the present invention provides examples of various specific processes and materials, but those skilled in the art will appreciate the applicability of the remaining processes and / or the use of the remaining materials.

[0031] Reference below Figures 1 to 3A simulated ship system engine start interlock control system according to an embodiment of the present invention is described, comprising a power supply module, a speed acquisition module M2, a frequency signal generator M3, a PLC central processing unit M1, a local / remote control switch SB1, a first start control circuit, a second start control circuit, a relay module, an ammeter P, a contactor module, and a simulation test terminal module consisting of multiple groups of test terminals;

[0032] The power module is connected in series with the PLC central processor in the circuit through the circuit breaker QF and the power isolation module MO in sequence. The power isolation module MO is connected in series with the input and output circuits of the PLC central processor. Specifically, the power module of this embodiment is a UPS power supply, which provides an uninterruptible power supply for the entire analog control system to ensure that the engine can operate safely and reliably. The power isolation module MO of this embodiment is a device used to realize electrical isolation between input and output circuits in the electrical system, and ensures the safety and signal integrity of the PLC central processor M1 by blocking common-mode interference and preventing the conduction of dangerous voltages.

[0033] The speed acquisition module M2 is connected in series to the circuit between the input end of the PLC central processor and the power isolation module MO. The frequency signal generator M3 is electrically connected to the speed acquisition module M2. The speed acquisition module M2 is used to collect the signal of the frequency signal generator M3 or the engine speed. The speed acquisition module M2 enters the PLC central processor through the sine wave signal input by the frequency signal generator M3, connects the test terminal X19 and the terminal X20 with a short wire, and slowly increases the frequency value output by the frequency signal generator M3.

[0034] The analog test terminal module is used to output analog signals;

[0035] The ammeter P is connected to the PLC central processor M1 and is used to display the analog speed value;

[0036] The local / remote control switch SB1 is used to select whether to use the local position or remote position signal to drive the engine start interlock control, and output it to the PLC central processor; in this embodiment, the local / remote control switch SB1 is a knob switch.

[0037] The PLC central processor is used to process the data transmitted by the speed acquisition module M2, and process the data to determine whether the engine is running successfully; it is used to output a control signal based on the received analog signal to drive the relay module and the contactor module to operate, thereby starting the engine through the first starting control circuit and the second starting control circuit.

[0038] refer to Figure 1As shown, in some embodiments, the relay module of the present invention includes relays KA1, KA2, KA3, KA4, KA5, KA6, KA7, KA8, KA9, KA10, KA11, KA12, and KA13; the multiple groups of test terminals in the simulation test terminal module include test terminals X1 and X2, X3 and X4, X5 and X6, X7 and X8, X9 and X10, X11 and X12, X13 and X14, X15 and X16, X17 and X18, X19 and X20, X21 and X22, and X23 and X24;

[0039] Among them, relays KA1, KA2, KA3 and KA4 are connected in parallel and connected to the circuit between the output end of the PLC central processor M1 and the power isolation module MO; relays KA5, KA6, KA7, KA8, KA9, KA10, KA11, KA12 and KA13 are connected in parallel and connected to the circuit of the power isolation module MO; in this embodiment, the relays are connected in parallel in the circuit, receive different signals, and execute different instructions;

[0040] Relay KA5 is connected in series to the normally open contact KA1-1 of relay KA1, and the normally closed contact KA12-1 of relay KA12 is connected in parallel with the normally open contact of relay KA1; relay KA6 is connected in series to the test terminals X1 and X2, and relay KA7 is connected in series to the test terminals X3 and X4; relay KA8 is connected in series to the normally closed contact KA13-1 of relay KA13 and the test terminals X5 and X6; relay KA9 is connected in series to the test terminals X7 and X8; relay KA10 is connected in series to the test terminals X9 and X10; relay KA11 is connected in series to the test terminals X11 and X12; relay KA12 is connected in series to the test terminals X13 and X14, and the test terminals X15 and X16 are connected in parallel with the test terminals X13 and X14; relay KA13 is connected in series to the test terminals X17 and X18; the test terminals X21 and X22 are connected to the first starting control circuit, and the test terminals X23 and X24 are connected to the second starting control circuit;

[0041] The normally closed contact KA5-1 of relay KA5, the normally open contact KA6-1 of relay KA6, the normally open contact KA7-1 of relay KA7, the normally open contact KA8-1 of relay KA8, the normally open contact KA9-1 of relay KA9, the normally open contact KA10-1 of relay KA10 and the normally open contact KA11-1 of relay KA11 as well as the test terminals X19 and X20 are connected in parallel to the circuit between the input end of the PLC central processor M1 and the power isolation module MO.

[0042] In this embodiment, relay KA1 is the gearbox forward / reverse relay; relay KA2 is the vehicle preparation completion relay; relay KA3 is the comprehensive fault relay, relay KA4 is the operation success relay, relay KA5 is the gearbox empty vehicle start interlock relay; relay KA6 is the shaft system brake signal relay; relay KA7 is the winching device position feedback signal relay; relay KA8 is the shutter switch signal relay; relay KA9 is the rudder angle zero status relay; relay KA10 is the propeller zero status relay; relay KA11 is the emergency stop position feedback signal relay; relay KA12 is the gearbox empty vehicle position signal relay; relay KA13 is the fire alarm signal relay.

[0043] refer to Figure 1 and Figure 2 As shown, in some embodiments, the first starting control circuit of the present invention includes ports 3 and 4 as well as ports 5 and 6 of the local / remote control switch SB1, the start button SB5, 2# automatic interlock starting signal, the normally open contact KA6-2 of relay KA6, the normally open contact KA7-2 of relay KA7, the normally open contact KA8-2 of relay KA8, the normally open contact KA9-2 of relay KA9, the normally open contact KA10-2 of relay KA10, the normally open contact KA11-2 of relay KA11, the normally closed contact KA5-2 of relay KA5, the normally closed contact KA4-1 of relay KA4, the starting contactor KM2 in the contactor module, and the starter motor QD1;

[0044] Among them, the normally open contact KA6-2 of the relay KA6, the normally open contact KA7-2 of the relay KA7, the normally open contact KA8-2 of the relay KA8, the normally open contact KA9-2 of the relay KA9, the normally open contact KA10-2 of the relay KA10, the normally open contact KA11-2 of the relay KA11, and the normally closed contact KA5-2 of the relay KA5 are connected in parallel and then connected in series with the port 5 and port 6 of the local / remote control switch SB1, the start button SB5, the 2# automatic interlock start signal, the normally closed contact KA4-1 of the relay KA4, and the start contactor KM2. The start contactor KM2 is connected in parallel with a diode D1, and the 2# automatic start interlock signal is connected to the input terminal 1# automatic start of the PLC central processor M1;

[0045] After port 3 and port 4 of the local / remote control switch SB1 are connected in series with the test terminals X21 and X22, one end is connected to the L2+ end of the power isolation module MO, and the other end is connected to the start button SB5; the contactor KM2 is connected to the L2- port of the power isolation module MO; after the normally open contact KM2-1 of the contactor KM2 and the starter motor QD1 are connected in series, one end is connected to the L2+ end of the power isolation module MO, and the other end is connected to the MOL2- end of the power isolation module.

[0046] Specifically, in this embodiment, when starter motor QD1 is stopped and vehicle preparation completion indicator HA8 is illuminated, start button SB5 can be operated, energizing the coil of starter contactor KM2 and closing normally open contact KM2-1 of contactor KM2. This energizes starter motor QD1, driving the engine. When the engine speed reaches 500 rpm or greater, the engine is successfully started. See Example 4 for details.

[0047] refer to Figure 3 As shown, in some embodiments, the second starting circuit of the present invention includes ports 7 and 8 as well as ports 9 and 10 of the local / remote control switch SB1, the start button SB6, 3# automatic start interlock signal, normally closed contacts KA4-2 and KA5-3 of relays KA4 and KA5, normally open contacts KA6-3, KA7-3, KA8-3, KA9-3, KA10-3, and KA11-3 of relays KA6, KA7, KA8, KA9, KA10, and KA11, the starting contactor KM3 in the contactor module, and the starter motor QD2;

[0048] Among them, port 9 and port 10 of the SB1, the start button SB6, the 3# automatic start interlock signal, the normally closed contact KA5-3 of the relay KA5, the normally open contacts KA6-3, KA7-3, KA8-3, KA9-3, KA10-3, KA11-3 of the relays KA6, KA7, KA8, KA9, KA10, and KA11, the normally closed contact KA4-2 of the relay KA4, and the starting contactor KM3 are connected in series, one end of which is connected to the L2+ end of the power isolation module MO and the other end is connected to the MOL2- end of the power isolation module; the 3# automatic start interlock signal is connected to the input terminal 1# automatic start of the PLC central processor M1, and the starting contactor KM3 is connected in parallel with a diode D2;

[0049] After port 7 and port 8 of the local / remote control switch SB1 and the test terminals X23 and X24 are connected in series, one end is connected to the L2+ port of the power isolation module MO, and the other end is connected to the start button SB6; after the normally open contact KM3-1 of the starting contactor KM3 is connected in series with the starter engine QD2, one end is connected to the L2+ end of the power isolation module MO, and the other end is connected to the MOL2- end of the power isolation module.

[0050] Specifically, in this embodiment, when starter motor QD2 is stopped and vehicle preparation completion indicator HA8 is illuminated, start button SB6 can be directly operated. This energizes the coil of contactor KM3, closes normally open contact KM3-1 of contactor KM3, energizes starter motor QD2, and drives the engine. When the engine speed reaches 500 rpm or greater, the engine is successfully started. See Example 4 for details.

[0051] refer to Figure 1As shown, in some embodiments, the present invention further includes an indicator light module and a test light button SB2, the indicator light module is connected in series to the circuit between the output end of the PLC central processor M1 and the power isolation module MO, and is used to display the status of each interlock circuit;

[0052] The test light button SB2 is connected in series to the circuit between the input terminal of the PLC central processor and the power isolation module MO, and is used to send a test light control signal to the PLC central processor M1. After receiving the signal, the PLC central processor M1 controls the indicator lights of the indicator light module to light up or go out, which is used to detect whether the indicator lights of the indicator light module are working properly. Specifically, if the test light module SB2 is manually pressed, the indicator lights of the indicator light module light up. When it is released, the indicator lights of the indicator light module go out, indicating that the indicator light module is operating normally.

[0053] refer to Figure 1 As shown, in some embodiments, the indicator light module of the present invention includes indicator lights HA1, HA2, HA3, HA4, HA5, HA6, HA7, and HA8. These indicator lights are connected in parallel to the circuit between the output terminal of the PLC central processor and the power isolation module MO. These indicator lights are used to display the status of each interlock starting circuit. When the PLC central processor M1 receives an analog signal, it drives the corresponding indicator light to flash.

[0054] Specifically, in this embodiment, HA1 is the gearbox idle indicator light; HA2 is the shaft system brake signal indicator light; HA3 is the turning device position signal indicator light; HA4 is the shutter switch signal indicator light; HA5 is the rudder angle zeroing status indicator light; HA6 is the propeller zeroing status indicator light; HA7 is the emergency stop position feedback signal indicator light; and HA8 is the vehicle preparation completion indicator light.

[0055] refer to Figure 1 As shown, in some embodiments, the present invention further includes a buzzer HK1 connected to the circuit between the output terminal of the PLC central processor M1 and the power isolation module MO. Specifically, in this embodiment, the buzzer HK1 is used to receive the control signal output by the PLC central processor and emit a whistle to alert the simulation test operator that the simulation signal has been put into operation.

[0056] refer to Figure 1As shown, in some embodiments, the present invention further includes a reset knob SB3, which is serially connected to the circuit between the output of the PLC central processor M1 and the power isolation module MO. Specifically, the reset knob SB3 is used to release the self-locking signal of the start interlock control system, resetting the start interlock control system. In other words, the reset knob SB3 is used to restore the initial state of the control system under the simulation test, resolving issues caused by system anomalies, errors, freezes, or driver problems.

[0057] refer to Figure 1 As shown, in some embodiments, the present invention further includes an answer button SB4, which is serially connected to the circuit between the isolation module MO and the PLC central processor. Specifically, the answer button SB4 is used to stop the buzzer HK1 from sounding and to turn the strobing indicator light to a flat light.

[0058] The engine start interlock control signal of the present invention is simulated through the test terminal. The test terminals are short-circuited with a short-circuit wire to simulate the start interlock signal, and the simulated signal is input to the PLC central processor M1. The PLC central processor M1 drives the corresponding relay and indicator light according to the received simulated signal to test whether each engine start interlock circuit is operating normally. After the simulation test is completed, the short-circuit wire is disassembled and the control system is restored to its initial state by the reset knob SB3. Each start interlock signal disappears.

[0059] refer to Figure 5 As shown, based on the above control system, the simulation test control method of the present invention is as follows:

[0060] S1 Preparation before the simulation test:

[0061] (1) The comprehensive fault relay KA3 does not operate, that is, the engine has no basic fault;

[0062] (2) No sine wave signal from the frequency signal generator M3 is output to the speed acquisition module M2, or the speed value is lower than 300-500 rpm by observing the ammeter P. The engine does not run successfully, that is, the relay coil KA4 does not operate and the engine does not start; the short-circuit wire shorts the test terminals X19 and X20;

[0063] (3) The relay module does not operate;

[0064] When (1) and (2) or (3) are met at the same time, the standby relay in the relay module is actuated. After the PLC central processor receives the signal, the standby indicator light in the indicator light module is turned on. The vehicle is ready and the simulation test begins.

[0065] S2. Select local operation or remote control operation through the local / remote control switch SB1. If local operation is selected, short-circuit the test terminals X1 and X2; if remote control operation is selected, short-circuit the test terminals X21 and X22 or the test terminals X23 and X24;

[0066] S3. Operate the test light button SB2 to observe whether the indicator light in the indicator light module is lit. If so, each start interlock circuit is operating normally and the conditions for the simulation experiment are met, and the process proceeds to step S5. If not, the start interlock circuit corresponding to the indicator light in the indicator light module that is not lit is faulty, and the operator should troubleshoot and repair the fault.

[0067] S4. Short-circuit a group of simulation test terminals, and the corresponding relay in the relay module is energized and activated, and the corresponding simulation signal is input to the PLC central processor M1. Based on the received simulation signal, the PLC central processor M1 drives the corresponding indicator light in the indicator light module to flash, and the buzzer HK1 to sound. At the same time, the contacts of the corresponding relay in the starting control circuit are activated, and the starting contactor is energized and activated, thereby starting the motor and driving the engine to rotate. The speed acquisition module M2 collects the engine speed and transmits it to the PLC central processor M1. After receiving the data, the PLC central processor M1 compares it with the speed threshold set internally. If the engine speed is less than or equal to the preset threshold, the engine fails to start, maintains the original speed, and enters the next simulation test of the starting interlock circuit. After all interlock circuit simulation tests are completed, the staff will check the cause of the interlock circuit failure corresponding to the simulation signal. After the fault is eliminated, the simulation test of this simulation signal will be performed again; if the engine speed is greater than or equal to the preset threshold, the engine starts successfully, and the starting interlock circuit corresponding to the simulation signal operates normally.

[0068] S5. Input the response signal to the PLC central processor M1. After receiving the signal, the PLC central processor M1 drives the indicator light module to flash and turn the light flat, and cancels the buzzer HK1 at the same time.

[0069] S6. Remove the short-circuit wire and input a reset signal to the PLC central processor M1. After the PLC central processor receives the signal, the control system returns to its initial state, turns off the power, and the simulation test ends.

[0070] In order to better understand the simulation test control method of the present invention, the simulation test method of the present invention is further described through the following examples.

[0071] Preparations before the simulation test:

[0072] refer to Figure 1 、 Figure 2 、 Figure 3 and Figure 4As shown, ports 1 and 2, ports 3 and 4, ports 5 and 6, ports 7 and 8, and ports 9 and 10 of the local / remote control switch SB1 each form a pair of selection contacts. When the local / remote control switch SB1 is at ports 1 and 2, the other terminals are not conducting. At this time, the local position outputs a signal to the PLC central processor M1 input and is connected in series to the vehicle preparation completion control system. When the comprehensive fault relay KA3 does not operate, that is, the engine has no basic fault; and the sine wave signal of the frequency signal generator M3 is output to the input end of the speed acquisition module M2, then the test terminals X19 and X20 are short-circuited to input a simulated speed value, and the ammeter P is observed. When the speed is lower than 300-500 rpm, the engine fails to run successfully, the successful operation relay coil KA4 does not operate, and the engine does not start. In other words, when the successful operation relay KA4 and the comprehensive fault relay KA3 do not operate;

[0073] Alternatively, when the gearbox empty start interlock relay KA5, the shaft brake signal relay KA6, the turning device position feedback signal relay KA7, the shutter switch signal relay KA8, the rudder angle zero status relay KA9, the propeller zero status KA10, and the emergency stop position feedback signal relay KA11 are not activated, the PLC central processor M1 drives the vehicle preparation completion relay KA2 to operate, and the vehicle preparation completion indicator light KA8 lights up, indicating that there is no fault in the ship system and the engine has not been started, the vehicle preparation is completed, and the simulation test begins.

[0074] Example 1: Remote control operation of the gearbox empty vehicle starting interlock starting circuit simulation test

[0075] refer to Figure 1 、 Figure 3 and Figure 4As shown, when the local / remote control switch SB1 is at port 3 and port 4 is conductive, and the other ports are not conductive, the test terminals X21 and X22 are short-circuited to realize remote control operation. Then, the test terminals X13 and X14 are short-circuited, the gearbox empty car position signal relay KA12 is energized, and its normally closed contact KA12-1 is disconnected, the gearbox empty car starting interlock relay KA5 is de-energized, and the starting interlock relay KA5 normally closed contact KA5-1 does not operate. The starting interlock signal gearbox empty car position analog signal is input into the PLC central processor M1, and the PLC central processor M1 drives the gearbox empty car indicator light HA1 to flash, and the buzzer HK1 sounds to remind the operator that the gearbox empty car interlock signal has been put into operation. At the same time, the normally closed contact KA5-2 of the gearbox empty vehicle starting interlock relay KA5 does not operate, the normally closed contact KA4-1 of the successful operation relay KA4 does not operate, the starting contactor KM2 coil is energized, the normally open contact KM2-1 of the starting contactor KM2 is energized and closed, the starting motor QD1 operates, and at the same time the operating frequency signal generator M3 collects the sinusoidal wave signal through the speed acquisition module M2 and transmits it to the PLC central processor M1. After receiving the data, the PLC central processor M1 compares it with the speed threshold set internally. If the engine speed is less than or equal to the preset threshold, the engine fails to start, maintains the original speed, and enters the next starting interlock circuit simulation test. After all interlock circuit simulation tests are completed, the staff will check the fault. After the fault is eliminated, the simulation test of this interlock circuit will be carried out again; if the engine speed is greater than or equal to the preset threshold, the engine starts successfully, and the starting interlock circuit operates normally.

[0076] The staff can press the answer button SB4 to stop the buzzer HK1 from sounding. At the same time, the gearbox empty vehicle indicator HA1 will flash and turn into a flat light.

[0077] The staff removes the short-circuit wire and then operates the reset knob SB3 to reset the control system of the present invention. After resetting, the next simulation test of the starting interlock circuit can be entered.

[0078] Example 2: Remote control operation of the gearbox empty vehicle starting interlock starting circuit simulation test

[0079] refer to Figure 1 、 Figure 3 and Figure 4As shown, when the local / remote control switch SB1 is at terminals 7 and 8 and is turned on, the other ports are not turned on. At this time, the short-circuit wire is connected to the test terminals X23 and X24 to realize remote control operation. At the same time, the short-circuit wire is connected to the test terminals X13 and X14, the gearbox control position signal relay KA12 is energized, and its normally closed contact KA12-1 is disconnected, the gearbox empty car starting interlock relay KA5 is de-energized, and the gearbox empty car starting interlock relay KA5 normally closed contact KA5-1 does not operate. The starting interlock signal gearbox empty car position analog signal is input to the PLC central processor M1. After receiving the signal, the PLC central processor M1 drives the gearbox empty car indicator light HA1 to flash and the buzzer HK1 to sound, reminding the operator that the gearbox empty car interlock analog signal has been put into operation.

[0080] The gearbox idling start interlock relay KA5 loses power, and its normally closed contact KA5-3 does not operate. At the same time, the short-circuit wires connect the test terminals X1 and X2, test terminals X3 and X4, test terminals X5 and X6, test terminals X7 and X8, test terminals X9 and X10, and test terminals X11 and X12 respectively. The shaft brake signal relay KA6, the turning device position feedback signal relay KA7, the shutter switch signal relay KA8, the rudder angle zeroing status relay KA9, the propeller zeroing status relay KA10, the emergency stop position feedback signal relay KA11, and the gearbox idling position signal relay KA12 are energized and operate. The normally open contacts KA6-3, KA7-3, KA8-3, KA9-3, and KA10-3 of the above relays are connected. , KA11-3 is closed, the starting contactor KM3 coil is energized, its normally open contact KM3-1 is energized and closed, the starting motor QD2 is actuated, and at the same time the frequency signal generator M3 is operated and the sine wave signal is collected through the speed acquisition module M2, and transmitted to the PLC central processor M1. After receiving the data, the PLC central processor M1 compares it with the speed threshold set internally. If the engine speed is less than or equal to the preset threshold, the engine fails to start, maintains the original speed, and enters the next starting interlock circuit simulation test. After all interlock circuit simulation tests are completed, the staff will check the fault. After the fault is eliminated, the simulation test of this interlock circuit will be carried out again; if the engine speed is greater than or equal to the preset threshold, the engine starts successfully and the interlock circuit operates normally.

[0081] After the gearbox control position signal relay KA12 is energized, its normally closed contact KA12-1 is disconnected. At this time, if the PLC central processor collects the performance parameters of the gearbox through internal communication and receives the forward and reverse position signals of the gearbox, it drives the gearbox forward / reverse signal output relay KA1 to be energized and actuated, then its normally open contact KA1-1 is closed, the gearbox empty car starting interlock relay KA5 is energized, the gearbox empty car starting interlock relay KA5 its normally closed contact KA5-1 is disconnected, the gearbox empty car indicator light HA1 becomes flat, and the buzzer HK1 does not sound. At this time, the gearbox is not in the empty car position and the engine cannot be started. If the PLC central processor M1 does not receive the forward and reverse position signals of the gearbox, the gearbox forward / reverse signal output relay KA1 is not energized and does not operate, and the gearbox empty car starting interlock relay KA5 is not energized and does not operate, and its normally closed contact KA5-1 does not operate, the gearbox empty car indicator light HA1 flashes, and the buzzer HK1 sounds, reminding the operator that the gearbox empty car interlock signal has been put into operation. In other words, it reminds the operator that the interlock circuits of the gearbox empty, reverse and forward car are operating normally.

[0082] The staff can press the answer button SB4 to stop the buzzer HK1 from sounding. At the same time, the gearbox empty vehicle indicator HA1 will flash and turn into a flat light.

[0083] The staff removes the short-circuit wire and operates the reset knob SB3 to reset the control system of the present invention and enter the next simulation test of the starting interlock circuit.

[0084] Example 3: Remote control operation of the gearbox empty vehicle start interlock starting circuit simulation test

[0085] refer to Figure 1 and Figure 3 As shown, when the local / remote control switch SB1 is at port 9 and port 10 is turned on, the other ports are not turned on. At this time, the test terminals X23 and X24 are short-circuited, that is, the analog switch K12 is closed to realize remote control operation, and then the test terminals X13 and X14 are short-circuited, that is, the analog signal K7 is closed, the gearbox control position signal relay KA12 is energized, and its normally closed contact KA12-1 is disconnected, the gearbox empty car starting interlock relay KA5 is de-energized, and its normally closed contact KA5-1 does not operate, and the gearbox empty car position simulation signal is input to the PLC central processor M1. After receiving the signal, the PLC central processor M1 drives the gearbox empty car indicator KA1 to flash and the buzzer HK1 to sound, reminding the operator that the gearbox empty car interlock signal has been put into operation.

[0086] At the same time, the gearbox no-load starting interlock relay KA5 normally open contact KA5-3 is closed. At the same time, the short-circuit wires are connected to the test terminals X1 and X2, test terminals X3 and X4, test terminals X5 and X6, test terminals X7 and X8, test terminals X9 and X10, test terminals X11 and X12 respectively, and there is no fire alarm simulation signal input. The relay KA13 coil is not energized and the operation is successful. The relay normally closed contact KA4-1 does not move. Relay KA6, relay KA7, relay KA8, relay KA9, relay KA10, relay KA11, and relay KA12 are energized and move. The above relay normally open contacts KA6-3, relay normally open contact KA7-3, relay normally open contact KA8-3, relay normally open contact KA9-3, relay normally open contact KA10- 3. The normally open contact KA11-3 of the relay is closed, the coil of the starting contactor KM3 is energized, and its normally open contact KM3-1 is energized and closed, and the starter motor QD2 is actuated. At the same time, the frequency signal generator M3 is operated and the sine wave signal is collected through the speed acquisition module M2 and transmitted to the PLC central processor M1. After receiving the data, the PLC central processor M1 compares it with the speed threshold set internally. If the engine speed is less than or equal to the preset threshold, the engine fails to start, maintains the original speed, and enters the next simulation test of the starting interlock circuit. After all the interlock circuit simulation tests are completed, the staff will check the fault. After the fault is eliminated, the simulation test can be carried out again; if the engine speed is greater than or equal to the preset threshold, the engine starts successfully, indicating that the gearbox is in neutral and the interlock starting circuit is operating normally.

[0087] After relay KA12 is energized, its normally closed contact KA12-1 is disconnected. At this time, if the PLC central processor M1 receives the forward and reverse position signals of the gearbox, and drives the gearbox forward / reverse signal output relay KA1 to be energized, its normally open contact KA1-1 is closed, the gearbox no-load start interlock relay KA5 is energized, and the gearbox no-load start interlock relay KA5's normally closed contact KA5-1 is disconnected. The gearbox no-load indicator light HA1 does not flash, that is, it is a flat light, and the buzzer HK1 does not sound. If the PLC central processor M1 does not receive the forward and reverse position signals of the gearbox, the gearbox forward / reverse signal output relay KA1 is not energized and does not operate, and the gearbox empty car starting interlock relay KA5 is not energized and does not operate, and its normally closed contact KA5-1 does not operate, the gearbox empty car indicator light HA1 flashes, and the buzzer HK1 sounds, reminding the operator that the gearbox empty car interlock signal has been put into operation. In other words, it reminds the operator that the interlock circuits of the gearbox empty, reverse and forward car are operating normally.

[0088] Example 4: Simulation test of controlling engine start interlock by starting button

[0089] When the local / remote control switch SB1 is at port 5 and port 6 is turned on, the other ports are not turned on. At this time, the start button SB5 is operated, the normally closed contact KA5-2 of the gear box starting interlock relay KA5 is turned on, the starting contactor KM2 is energized, its normally open contact KM2-1 is closed, and the starter motor QD1 is activated; further, the relay normally open contacts KA6-3, KA7-3, KA8-3, KA9-3, KA10-3, KA11-3 are connected in parallel with the gear box starting interlock relay KA5 normally closed contact KA5-2 in the circuit, and at the same time, the test terminals X1, X2 or X3, X4 or X5, X6 or X7, X8 or X9, X10 or X11, X12 are connected with short-circuit wires as needed, and finally the starter motor QD2 is driven to be energized.

[0090] When the local / remote control switch SB1 is at port 9 and port 10, the other ports are not conducting, and the start button SB6 is connected in series with the normal closed contact of the operation success relay KA4-2, the gear box start interlock relay KA5 normal closed contact KA5-3, the start contactor KM3, 3# start interlock signal, relay normally open contacts KA6-3, KA7-3, KA8-3, KA9-3, KA10-3, KA11-3 in the start circuit; when the engine is stopped, the operation starts. Press button SB6, and use short-circuit wires to connect the test terminals X1, X2 and X3, X4 and X5, X6 and X7, X8 and X9, X10 and X11, X12 respectively. The normally open contacts KA6-3, KA7-3, KA8-3, KA9-3, KA10-3, and KA11-3 of the relay will be closed. When the engine is stopped, operate the start button SB6, the coil of the starting contactor KM3 will be energized, the normally open contact of the contactor KM3 will be closed, and the starting motor QD2 will be energized.

[0091] The starting motor QD1 or QD2 is energized, and at the same time the frequency signal generator M3 is operated and the sine wave signal is collected through the speed acquisition module M2. The speed acquisition module M2 collects the sine wave signal of the frequency generator M3 and transmits it to the PLC central processor M1. After receiving the data, the PLC central processor M1 compares it with the speed threshold set internally. If the engine speed is less than or equal to the preset threshold, the engine fails to start, maintains the original speed, and enters the next simulation test of the starting interlock circuit. After all the interlock circuit simulation tests are completed, the staff will check the fault. After the fault is eliminated, the simulation test of the interlock circuit will be carried out again; if the engine speed is greater than or equal to the preset threshold, the engine starts successfully and the starting interlock circuit operates normally.

[0092] Example 5: Starting interlock signal shaft brake simulation test:

[0093] The short-circuit connects the test terminals X1 and X2, the shaft brake signal relay KA6 is energized, its normally open contact KA6-1 is closed, and the start interlock signal shaft brake simulation signal is input to the PLC central processor M1. After receiving the signal, the PLC central processor M1 drives the shaft brake signal indicator HA2 to flash and the buzzer HK1 to sound. At the same time, the normally open contact KA6-2 of the shaft brake signal relay KA6 closes, the normally closed contact KA4-1 of the run relay does not operate, the coil of the start contactor KM2 is energized, the normally open contact KM2-1 of the start contactor is energized and closed, and the starter motor QD1 is activated. At the same time, the frequency signal generator M3 is operated and a sine wave signal is collected through the speed acquisition module M2. The speed acquisition module M2 collects the sine wave signal of the frequency generator M3 and transmits it to the PLC central processor M1. After receiving the data, the PLC central processor M1 compares it with its internally set speed threshold. If the engine speed is less than or equal to the preset threshold, the engine fails to start, maintains the original speed, and enters the next start interlock circuit simulation test. After all interlock circuit simulation tests are completed, the staff will check for the fault. Once the fault is eliminated, the simulation test can be repeated. If the engine speed is greater than or equal to the preset threshold, the engine starts successfully and the shaft brake start interlock circuit is operating normally. The shaft brake technology in this embodiment is existing technology and will not be described in detail.

[0094] The staff operates the response button SB4 to stop the buzzer HK1 from sounding. At the same time, the shaft system brake signal indicator light HA2 flashes and changes to a flat light.

[0095] The staff removes the short-circuit wire and then operates the reset knob SB3 to reset the control system of the present invention. After resetting, the next simulation test of the starting interlock circuit can be entered.

[0096] Example 6: Simulation test of the position of the starting interlock signal turning device

[0097] The short-circuit wire connects the test terminals X3 and X4, and the turning device position feedback signal relay KA7 is energized. Its normally open contact KA7-1 is closed, and the starting interlock signal turning device position analog signal is input to the PLC central processor M1. After receiving the signal, the PLC central processor M1 drives the turning device position signal indicator HA3 to flash and the buzzer HK1 to sound, reminding the operator that the turning device position analog signal has been put into operation. At the same time, the normally open contact KA7-2 of the cranking device position feedback signal relay KA7 closes, energizing the starter contactor KM2 coil, energizing the starter contactor's normally open contact KM2-1, and activating the starter motor QD1. Simultaneously, the frequency signal generator M3 is operated and a sine wave signal is collected via the speed acquisition module M2. The speed acquisition module M2 collects the sine wave signal from the frequency generator M3 and transmits it to the PLC central processor M1. Upon receiving the data, the PLC central processor M1 compares it with its internally set speed threshold. If the engine speed is less than or equal to the preset threshold, the engine fails to start, maintains the original speed, and enters the next start interlock circuit simulation test. After all interlock circuit simulation tests are completed, the staff will troubleshoot the problem. Once the problem is eliminated, the simulation test can be repeated. If the engine speed is greater than or equal to the preset threshold, the engine starts successfully, indicating that the cranking device has been disengaged and the start interlock circuit is operating normally. The cranking device position signal control in this embodiment is prior art and will not be described in detail here.

[0098] The staff operates the response button SB4 to stop the buzzer HK1 from sounding, and the turning device position signal indicator HA3 flashes and changes to a flat light.

[0099] The staff removes the short-circuit wire and then operates the reset knob SB3 to reset the control system of the present invention. After resetting, the next simulation test of the starting interlock circuit can be entered.

[0100] Example 7: Start interlock signal shutter switch simulation test

[0101] refer to Figure 1As shown, if the fire alarm signal test terminals X17 and X18 are not short-circuited, the short-circuit wire is connected to the test terminals X5 and X6, the shutter switch signal relay KA8 is energized, and its normally open contact KA8-1 is closed, starting the interlock signal shutter switch analog signal input PLC central processor M1, after receiving the signal, the PLC central processor M1 drives the shutter switch signal indicator HA4 to flash, at the same time, the buzzer HK1 sounds an alarm to remind the operator that the shutter switch signal has been put into operation. At the same time, the normally open contact KA8-2 of the blinds switch signal relay KA8 closes, energizing the starter contactor KM2, closing its normally open contact KM2-1 and activating the starter motor QD1. This simultaneously activates the frequency signal generator M3 and collects a sinusoidal signal through the speed acquisition module M2. The speed acquisition module M2 collects the sinusoidal signal from the frequency generator M3 and transmits it to the PLC central processor M1. Upon receiving this data, the PLC central processor M1 compares it with its internally set speed threshold. If the engine speed is less than or equal to the preset threshold, the engine start fails, maintaining the original speed and entering the next start interlock circuit simulation test. After all interlock circuit simulation tests are completed, the operator will troubleshoot the problem. Once the problem is resolved, the simulation test can be repeated. If the engine speed is greater than or equal to the preset threshold, the engine start succeeds, indicating that the blinds are open and the start interlock circuit is operating normally. In this embodiment, the blinds are normally closed.

[0102] The staff operates the answer button SB4 to release the buzzer HK1 alarm and start the interlocking shutter switch signal indicator HA4 to flash and turn flat.

[0103] The staff removes the short-circuit wire and then operates the reset knob SB3 to reset the control system of the present invention. After resetting, the next simulation test of the starting interlock circuit can be entered.

[0104] If the fire alarm signal test terminals X17 and X18 are short-circuited, the fire alarm signal relay KA13 coil is energized, and its normally closed contact KA13-1 is disconnected. The shutter switch signal relay KA8 coil is de-energized, and its normally open contact KA8-1 is closed. The shutter switch signal analog signal is input to the PLC central processor M1. After receiving the signal, the PLC central processor M1 drives the shutter switch signal indicator HA4 to flash and the buzzer HK1 to sound, reminding the operator that the shutter switch analog signal has been put into operation. At the same time, the shutter is driven to close quickly, so that the shutter can be quickly closed in the event of a fire, preventing the rapid spread of the fire and ensuring the safety of the personnel on the ship.

[0105] Fire alarms are a core component of a ship's safety system, used to monitor fire risks in real time, quickly generate alarms, and initiate emergency response measures to minimize the threat posed by fire to personnel, ships, and the environment.

[0106] The staff operates the answer button SB4 to release the buzzer HK1 alarm, and at the same time the blind switch signal analog signal indicator HA4 flashes and changes to a flat light.

[0107] The staff removes the short-circuit wire and then operates the reset knob SB3 to reset the control system of the present invention. After resetting, the next simulation test of the starting interlock circuit can be entered.

[0108] Example 8: Simulation test of starting interlock signal rudder angle zero state

[0109] The short-circuit wire connects the test terminals X7 and X8, the rudder angle zeroing status signal relay KA9 is energized, its normally open contact KA9-1 is closed, and the starting interlock signal rudder angle zeroing status analog signal is input to the PLC central processor M1. After receiving the signal, the PLC central processor M1 drives the rudder angle zeroing status signal indicator HA5 to flash, and the buzzer HK1 sounds an alarm to remind the operator that the rudder angle zeroing status signal has been put into operation. At the same time, the normally open contact KA9-2 of the rudder angle zeroing status signal relay KA9 is closed, the starting contactor KM2 is energized, the normally open contact KM2-1 of the starting contactor is energized and closed, the starting motor QD1 is actuated, and the frequency signal generator M3 is operated at the same time to collect the sine wave signal through the speed acquisition module M2. The speed acquisition module M2 collects the sine wave signal of the frequency generator M3 and transmits it to the PLC central processor M1. After receiving the data, the PLC central processor M1 compares it with the speed threshold set internally. If the engine speed is less than or equal to the preset threshold, the engine start fails, the original speed is maintained, and the next starting interlock circuit simulation test is entered. After all interlock circuit simulation tests are completed, the staff will check the fault. After the fault is eliminated, the simulation test can be carried out again; if the engine speed is greater than or equal to the preset threshold, the engine start is successful, indicating that the rudder angle state is zero and the interlock starting circuit is operating normally.

[0110] The staff operates the response button SB4, the buzzer HK1 alarm is released, and the rudder angle zeroing status signal indicator light HA5 flashes and changes to a flat light.

[0111] The staff removes the short-circuit wire and then operates the reset knob SB3 to reset the control system of the present invention. After resetting, the next simulation test of the starting interlock circuit can be entered.

[0112] Example 9: Simulation test of propeller zeroing state with starting interlock signal

[0113] The short-circuit wire connects the test terminals X9 and X10, the propeller zeroing status signal relay KA10 is energized, its normally open contact KA10-1 is closed, and the start interlock signal propeller zeroing status analog signal is input to the PLC central processor M1. After receiving the signal, the PLC central processor M1 drives the propeller zeroing status indicator light HA6 to flash and the buzzer HK1 to sound, reminding the operator that the propeller zeroing status signal has been put into operation. At the same time, the normally open contact KA10-2 of the propeller zeroing status signal relay KA10 is closed, the starting contactor KM2 is energized, its normally open contact KM2-1 is energized and closed, the starting motor QD1 is actuated, and the frequency signal generator M3 is operated at the same time to collect the sine wave signal through the speed acquisition module M2. The speed acquisition module M2 collects the sine wave signal of the frequency generator M3 and transmits it to the PLC central processor M1. After receiving the data, the PLC central processor M1 compares it with the speed threshold set internally. If the engine speed is less than or equal to the preset threshold, the engine start fails, the original speed is maintained, and the next starting interlock circuit simulation test is entered. After all interlock circuit simulation tests are completed, the staff will check the fault. After the fault is eliminated, the simulation test can be carried out again; if the engine speed is greater than or equal to the preset threshold, the engine start is successful, indicating that the propeller status has returned to zero and the interlock starting circuit is operating normally.

[0114] The staff operated the response button SB4 to stop the buzzer HK1 from sounding, and at the same time the propeller zeroing status signal indicator light HA6 flashed and turned flat.

[0115] The staff removes the short-circuit wire and then operates the reset knob SB3 to reset the control system of the present invention. After resetting, the next simulation test of the starting interlock circuit can be entered.

[0116] Example 10: Simulation test of the start interlock signal emergency stop position feedback signal

[0117] Short-circuit the test terminals X11 and X12, and the emergency stop position feedback signal relay KA11 will be energized. Its normally open contact KA11-1 will be closed, and the start interlock signal emergency stop position feedback analog signal will be input to the PLC central processor M1. After receiving the signal, the PLC central processor M1 will drive the emergency stop position feedback signal indicator light HA7 to flash and the buzzer HK1 to sound, reminding the operator that the emergency stop position feedback analog signal has been put into operation. At the same time, the normally open contact KA11-2 of the emergency stop position feedback signal relay KA11 is closed, the starting contactor KM2 is energized, its normally open contact KM2-1 is closed, the starting motor QD1 is actuated, and the frequency signal generator M3 is operated at the same time to collect the sine wave signal through the speed acquisition module M2. The speed acquisition module M2 collects the sine wave signal of the frequency generator M3 and transmits it to the PLC central processor M1. After receiving the data, the PLC central processor M1 compares it with the speed threshold set internally. If the engine speed is less than or equal to the preset threshold, the engine fails to start, maintains the original speed, and enters the next starting interlock circuit simulation test. After all interlock circuit simulation tests are completed, the staff will troubleshoot the fault. After the fault is eliminated, the simulation test of this interlock circuit will be performed again; if the engine speed is greater than or equal to the preset threshold, the engine starts successfully, indicating that the emergency stop position feedback signal is normal and the interlock circuit is operating normally.

[0118] The staff operates the response button SB4 to release the buzzer HK1 alarm, and at the same time the emergency stop position feedback signal indicator HA6 flashes and then turns to flat light.

[0119] The staff removes the short-circuit wire and then operates the reset knob SB3 to reset the control system of the present invention. After resetting, the next simulation test of the starting interlock circuit can be entered.

[0120] This invention can guide operators to clearly understand the classification of ship system and engine interlocks, and understand the processing steps and unlocking methods after the engine start interlock system is triggered. This allows operators to quickly resolve start interlock failures encountered during actual operations. In addition, this simulation test control system preemptively avoids the problem of interlock signal failures in ship system engines, ensuring the reliability and stability of engine start interlock control, reducing safety hazards and costs, alleviating operator labor intensity, and improving operator skills.

[0121] The remaining components of the simulated ship system engine start interlock control system and method according to the embodiment of the present invention, such as relays, contactors, PLC central processor M1, etc., and operations are well known to ordinary technicians in this field and will not be described in detail here.

[0122] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0123] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature identified as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, "plurality" means two or more, unless otherwise specifically defined.

[0124] In the present invention, unless otherwise expressly specified or limited, terms such as "mounted," "connected," "connect," and "fixed" should be understood broadly. For example, they may refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection, or communication; direct connection or indirect connection through an intermediate medium; and internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0125] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0126] In the description of this specification, the reference terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and features of different embodiments or examples without contradiction.

[0127] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to the embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the claims and their equivalents.

Claims

1. A simulated ship system engine start interlock control system, characterized in that: It includes a power supply module, a speed acquisition module M2, a frequency signal generator M3, a PLC central processing unit M1, a local / remote control switch SB1, a first starting control circuit, a second starting control circuit, a relay module, an ammeter P, a contactor module, and a simulation test terminal module consisting of multiple groups of test terminals; The power module is connected in series with the PLC central processor M1 in the circuit through the circuit breaker QF, the power isolation module MO, and the power isolation module MO is connected in series with the input and output circuits of the PLC central processor; The speed acquisition module M2 is connected in series to the circuit between the input terminal of the PLC central processor and the power isolation module MO, and the frequency signal generator M3 is electrically connected to the speed acquisition module M2. The speed acquisition module M2 is used to collect the signal of the frequency signal generator M3 or the engine speed; The ammeter P is connected to the PLC central processor M1 and is used to display the analog speed value; The analog test terminal module is used to output analog signals; The local / remote control switch SB1 is used to select whether to use the local position or remote position signal to drive the engine start interlock control, and output it to the PLC central processor; The PLC central processor is used to process the data transmitted by the speed acquisition module M2, and process the data to determine whether the engine is running successfully; it is used to output a control signal based on the received analog signal to drive the relay module and the contactor module to operate, thereby driving the starter motor to work through the first starting control circuit or the second starting control circuit, thereby starting the engine.

2. The engine start interlock control system for a simulated ship system according to claim 1, characterized in that: The relay module includes relays KA1, KA2, KA3, KA4, KA5, KA6, KA7, KA8, KA9, KA10, KA11, KA12, and KA13; The multiple groups of test terminals in the simulation test terminal module include test terminals X1 and X2, X3 and X4, X5 and X6, X7 and X8, X9 and X10, X11 and X12, X13 and X14, X15 and X16, X17 and X18, X19 and X20, X21 and X22, X23 and X24; Among them, the relays KA1, KA2, KA3 and KA4 are connected in parallel and connected to the circuit between the output end of the PLC central processor M1 and the power isolation module MO; The relays KA5, KA6, KA7, KA8, KA9, KA10, KA11, KA12 and KA13 are connected in parallel to the power isolation module MO circuit; The relay KA5 is connected in series to the normally open contact KA1-1 of the relay KA1, and the normally closed contact KA12-1 of the relay KA12 is connected in parallel with the normally open contact of the relay KA1; the relay KA6 is connected in series to the test terminals X1 and X2, and the relay KA7 is connected in series to the test terminals X3 and X4; the relay KA8 is connected in series to the normally closed contact KA13-1 of the relay KA13 and the test terminals X5 and X6; the relay KA9 is connected in series to the test terminals X7 and X8; the relay KA10 is connected in series to the test terminals X9 and X10; the relay KA11 is connected in series to the test terminals X11 and X12; the relay KA12 is connected in series to the test terminals X13 and X14, the test terminals X15 and X16 are connected in parallel with the test terminals X13 and X14, and the relay KA13 is connected in series to the test terminals X17 and X18; the test terminals X21 and X22 are connected to the first starting control circuit, and the test terminals X23 and X24 are connected to the second starting control circuit; The normally closed contact KA5-1 of relay KA5, the normally open contact KA6-1 of relay KA6, the normally open contact KA7-1 of relay KA7, the normally open contact KA8-1 of relay KA8, the normally open contact KA9-1 of relay KA9, the normally open contact KA10-1 of relay KA10 and the normally open contact KA11-1 of relay KA11 as well as the test terminals X19 and X20 are connected in parallel to the circuit between the input end of the PLC central processor M1 and the power isolation module MO.

3. The engine start interlock control system for a simulated ship system according to claim 2, characterized in that: The first starting control circuit includes ports 3 and 4 as well as ports 5 and 6 of the local / remote control switch SB1, the start button SB5, the 2# automatic interlock starting signal, the normally open contact KA6-2 of the relay KA6, the normally open contact KA7-2 of the relay KA7, the normally open contact KA8-2 of the relay KA8, the normally open contact KA9-2 of the relay KA9, the normally open contact KA10-2 of the relay KA10, the normally open contact KA11-2 of the relay KA11, the normally closed contact KA5-2 of the relay KA5, the normally closed contact KA4-1 of the relay KA4, the starting contactor KM2 in the contactor module, and the starter motor QD1; Among them, the normally open contact KA6-2 of the relay KA6, the normally open contact KA7-2 of the relay KA7, the normally open contact KA8-2 of the relay KA8, the normally open contact KA9-2 of the relay KA9, the normally open contact KA10-2 of the relay KA10, the normally open contact KA11-2 of the relay KA11, and the normally closed contact KA5-2 of the relay KA5 are connected in parallel and then connected in series with the port 5 and port 6 of the local / remote control switch SB1, the start button SB5, the 2# automatic interlock start signal, the normally closed contact KA4-1 of the relay KA4, and the start contactor KM2. The start contactor KM2 is connected in parallel with a diode D1, and the 2# automatic start interlock signal is connected to the input terminal 1# automatic start of the PLC central processor M1; After port 3 and port 4 of the local / remote control switch SB1 are connected in series with the test terminals X21 and X22, one end is connected to the L2+ end of the power isolation module MO, and the other end is connected to the start button SB5; the contactor KM2 is connected to the L2- port of the power isolation module MO; after the normally open contact KM2-1 of the contactor KM2 and the starter motor QD1 are connected in series, one end is connected to the L2+ end of the power isolation module MO, and the other end is connected to the L2- end of the power isolation module MO.

4. The engine start interlock control system for a simulated ship system according to claim 3, characterized in that: The second starting circuit includes ports 7 and 8 as well as ports 9 and 10 of the local / remote control switch SB1, the start button SB6, the 3# automatic start interlock signal, the normally closed contacts KA4-2 and KA5-3 of the relays KA4 and KA5, the normally open contacts KA6-3, KA7-3, KA8-3, KA9-3, KA10-3 and KA11-3 of the relays KA6, KA7, KA8, KA9, KA10 and KA11, the starting contactor KM3 in the contactor module, and the starter motor QD2; Among them, port 9 and port 10 of the SB1, the start button SB6, the 3# automatic start interlock signal, the normally closed contact KA5-3 of the relay KA5, the normally open contacts KA6-3, KA7-3, KA8-3, KA9-3, KA10-3, KA11-3 of the relays KA6, KA7, KA8, KA9, KA10, and KA11, the normally closed contact KA4-2 of the relay KA4, and the starting contactor KM3 are connected in series, one end of which is connected to the L2+ end of the power isolation module MO and the other end is connected to the MOL2- end of the power isolation module; the 3# automatic start interlock signal is connected to the input terminal 1# automatic start of the PLC central processor M1, and the starting contactor KM3 is connected in parallel with a diode D2; After port 7 and port 8 of the local / remote control switch SB1 and the test terminals X23 and X24 are connected in series, one end is connected to the L2+ port of the power isolation module MO, and the other end is connected to the start button SB6; after the normally open contact KM3-1 of the starting contactor KM3 is connected in series with the starter engine QD2, one end is connected to the L2+ end of the power isolation module MO, and the other end is connected to the L2- end of the power isolation module MO.

5. The engine start interlock control system for a simulated ship system according to claim 4, characterized in that: Also includes An indicator light module, which is connected in series to the circuit between the output terminal of the PLC central processor M1 and the power isolation module MO; The test light button SB2 is connected in series to the circuit between the input end of the PLC central processor and the power isolation module MO, and is used to send a test light control signal to the PLC central processor M1. After receiving the signal, the PLC central processor M1 controls the indicator light module to light up or go out.

6. A simulated ship system engine start interlock control system according to claim 4 or 5, characterized in that: The indicator light module includes indicator lights HA1, HA2, HA3, HA4, HA5, HA6, HA7 and HA8, which are connected in parallel to the circuit between the output end of the PLC central processor and the power isolation module MO.

7. The engine start interlock control system for a simulated ship system according to claim 6, characterized in that: It also includes a buzzer HK1, which is connected to the circuit between the output end of the PLC central processor M1 and the power isolation module MO.

8. The engine start interlock control system for a simulated ship system according to claim 7, characterized in that: It also includes a reset knob SB3, which is connected in series to the circuit between the output end of the PLC central processor and the power isolation module MO.

9. The engine start interlock control system for a simulated ship system according to claim 8, characterized in that: It also includes an answer button SB4, which is connected in series to the circuit between the isolation module MO and the PLC central processor.

10. A method for controlling engine start-up interlock of a simulated ship system, characterized in that: The following steps are involved: S1 Preparation before simulation test: (1) The comprehensive fault relay KA3 does not operate, that is, the engine has no basic fault; (2) No sine wave signal from the frequency signal generator M3 is output to the speed acquisition module M2, or the speed value is lower than 300-500 rpm by observing the ammeter P. The engine does not run successfully, that is, the relay coil KA4 does not operate and the engine does not start; the short-circuit wire shorts the test terminals X19 and X20; (3) The relay module does not operate; When (1) and (2) or (3) are met at the same time, the standby relay in the relay module is actuated. After the PLC central processor receives the signal, the standby indicator light in the indicator light module is turned on. The vehicle is ready and the simulation test begins. S2. Select local operation or remote control operation through the local / remote control switch SB1. If local operation is selected, short-circuit the test terminals X1 and X2; if remote control operation is selected, short-circuit the test terminals X21 and X22 or the test terminals X23 and X24; S3. Operate the test light button SB2 to observe whether the indicator light in the indicator light module is lit. If so, each start interlock circuit is operating normally and the conditions for the simulation experiment are met, and the process proceeds to step S5. If not, the start interlock circuit corresponding to the indicator light in the indicator light module that is not lit is faulty, and the operator should troubleshoot and repair the fault. S4. Short-circuit a group of simulation test terminals, and the corresponding relay in the relay module is energized and actuated, and the corresponding simulation signal is input to the PLC central processor M1. Based on the received simulation signal, the PLC central processor M1 drives the corresponding indicator light in the indicator light module to flash, and the buzzer HK1 to sound. At the same time, the contacts of the corresponding relay in the starting control circuit are actuated, and the starting contactor is energized and actuated, thereby starting the motor and driving the engine to rotate. The speed acquisition module M2 collects the engine speed and transmits it to the PLC central processor M1. After receiving the data, the PLC central processor M1 compares it with the speed threshold set internally. If the engine speed is less than or equal to the preset threshold, the engine fails to start, maintains the original speed, and enters the next simulation test of the starting interlock circuit. After all the interlock circuit simulation tests are completed, the staff will check the cause of the interlock circuit failure corresponding to the simulation signal. After the fault is eliminated, the simulation test of this simulation signal will be performed again; if the engine speed is greater than or equal to the preset threshold, the engine starts successfully, and the starting interlock circuit corresponding to the simulation signal operates normally; S5. Input the response signal to the PLC central processor M1. After receiving the signal, the PLC central processor M1 drives the indicator light module to flash and turn the light flat, and cancels the buzzer HK1 at the same time. S6. Remove the short-circuit wire and input a reset signal to the PLC central processor M1. After the PLC central processor receives the signal, the control system returns to its initial state, turns off the power, and the simulation test ends.

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