CN104784860A - Detection device for fan and oil pump module of ship fire control system - Google Patents

Abstract

The invention relates to a wind oil module detection device of a ship fire control system. The wind oil module detection device of the ship fire control system includes a power supply circuit, a control circuit, a display circuit, an automatic control function detection circuit and a manual control function detection circuit. The power supply circuit is connected to the power port of the module under test through wiring. The present invention has 4 detection channels, and can detect up to 4 wind oil modules at the same time. While ensuring the reliability of the detected modules, the detection efficiency is effectively improved, and it brings great benefits to the mass production and functional inspection of the wind oil modules in the fire control system. Convenience plays an important role in shortening the product testing cycle and improving product reliability.

Description

A wind oil module detection device of a ship fire control system

technical field

The invention relates to a wind oil module detection device of a ship fire control system.

Background technique

In order to meet the needs of the water transportation industry, the automation level of modern ships is getting higher and higher, and the number of electrical equipment is also increasing, which increases the risk of fire hazards on ships. In addition, the space of the ship is limited, the passages and stairs in the cabin are very narrow, and there are few evacuation passages. Once a fire occurs, the fire is easy to spread quickly and the evacuation of personnel is relatively difficult, which poses a great threat to the safety of the ship, cargo and crew. When a fire breaks out on a ship, the first thing to bear the brunt is to turn off the fan and oil pump, so that the ship stops sailing, which helps to control the fire and implement fire extinguishing measures; missing important parts.

After searching the literature of the prior art, it was found that the Chinese patent publication number CN102974061A, the publication date is 2013.03.20, the patent name is: a modular ship fire control system, and the patent self-statement is: "The present invention relates to a The ship fire control system of design, specifically, is a kind of function control system that signal monitoring and processing function is packaged into sub-modules respectively. The present invention includes power supply module, control module, input module, power module, air oil module and display module Among them, the wind oil module is connected with the fan and the oil pump... ". The air-oil module described in this invention can realize the cut-off control of the fan and the oil pump, and plays an important role in completing ship fire extinguishing. Its shortcomings are: the circuit design of the wind oil module is complex, the number of electronic components is large, and it contains a microcontroller and a CAN transceiver. The professional quality of inspectors has very high requirements. The long-term repetitive work of inspectors will easily lead to low inspection efficiency and product reliability cannot be guaranteed. It can be seen that inefficient and complicated product inspection methods have become restrictions on the batch production of wind oil modules. Serious obstacles to production and application promotion.

Contents of the invention

The purpose of the present invention is to provide a method for reducing the complexity of the testing and inspection work of the air oil module, reducing the workload of the testing and inspection links of the module, and improving the reliability and automation of the testing and inspection work of the module. Wind oil module detection device of ship fire control system.

The purpose of the present invention is achieved like this:

A wind oil module detection device of a ship fire control system, comprising a power supply circuit, a control circuit, a display circuit, an automatic control function detection circuit and a manual control function detection circuit, the power supply circuit is connected to the power port of the module under test through wiring;

The CAN bus transceiver output port of the control circuit is connected to the CAN bus communication port of the module under test; the control circuit controls the working state of the detection circuit through the MCU controller and the CAN bus transceiver, and realizes the connection between the detection device and the air oil module through the CAN bus. Acquisition and transmission of inter-signals;

The output port of the photocoupler of the manual control function detection circuit is connected to the ground port of the module under test in sequence; the manual control function detection circuit controls the conduction of the photoelectric coupler through the bus driver to realize the function of inputting the ground signal to the air oil module, thereby detecting Manual control function of air oil module;

The input port of the automatic control function detection circuit is connected in sequence with the output port of the tested module; the automatic control function detection circuit forms a loop with the measured wind oil module and the circuit device of the present invention, when the wind oil module has an external passive output signal , the circuit is turned on, and the conduction signal is transmitted to the MCU controller for analysis and processing, and the automatic control function of the wind oil module is detected;

The power supply circuit is composed of terminals, switches and power conversion modules, which are used to connect the external 24V DC voltage to the detection device through the terminals, and convert it into 5V DC voltage through the power conversion module, and at the same time provide automatic control function detection circuit and manual control function The detection circuit provides 24V/5V power supply voltage, and the power supply circuit converts the external input 24V DC voltage into 5V DC voltage through the power conversion module, and provides 24V and 5V power supply voltage at the same time;

The control circuit is mainly composed of MCU controller and CAN bus transceiver. The MCU controller transmits signals with the air oil module through the CAN bus, controls the output state of the air oil module, compares the control command with the output state of the air oil module, and determines whether the output of the air oil module is abnormal.

The display circuit includes LED indicator lights, digital tubes, buzzers, inverters and photoelectric couplers. When a fault is detected in the air oil module, a signal is sent through the MCU controller, and the digital tubes are driven after being processed by the inverter to display The channel and fault type of the current faulty module, and the buzzer is driven by a single optocoupler to issue an audible alarm.

The beneficial effects of the present invention are:

The invention can provide external input signal and power supply to the wind oil module of the ship fire control system, and detect various functions of the wind oil module. When a failure of the air oil module is detected, an automatic alarm is realized, and the number of the failed air oil module and the specific fault type are displayed at the same time. In addition, the present invention has 4 detection channels, and can detect up to 4 air-oil modules at the same time. While ensuring the reliability of the detected modules, it effectively improves the detection efficiency, and provides a basis for the mass production and functional inspection of the air-oil modules in the fire control system. It brings convenience and plays an important role in shortening the product testing cycle and improving product reliability.

Description of drawings

Fig. 1 is a system structure diagram of the present invention;

Fig. 2 is a schematic diagram of the automatic control function detection circuit and the manual control function detection circuit of the present invention.

Detailed ways

The present invention will be described in more detail below in conjunction with accompanying drawing:

The purpose of the present invention is to provide a special intelligent detection device that can input external signals and power supply to the wind oil module in the ship fire control system, and automatically detect the working status of multiple wind oil module hardware circuits, for reducing the wind oil module. The complexity of the testing and inspection work reduces the workload of the testing and inspection links of the module, and improves the reliability and automation of the testing and inspection work of the module. Specifically, it is a detection device that detects the integrity of the circuit function by exchanging information with the wind oil module of the ship fire control system, and at the same time displays the type of failure and realizes automatic alarm.

The invention includes a power supply circuit, a control circuit, a display circuit, an automatic control function detection circuit and a manual control function detection circuit. Among them, the power supply circuit can convert the externally input 24V DC voltage into 5V DC voltage through the power conversion module, and provide 24V and 5V power supply voltages for the internal devices of the detection device at the same time; the control circuit is controlled by the MCU controller and the CAN bus transceiver Control the working state of the detection circuit, and realize the signal collection and transmission between the detection device and the air oil module through the CAN bus; the display circuit includes LED indicator lights, digital tubes and buzzers, which mainly realize status display, fault type prompts, fault These three functions of the alarm; the automatic control function detection circuit can form a loop with the measured wind oil module and the circuit device of the present invention, when the wind oil module has an external passive output signal, the loop conduction, and the conduction signal is passed to The MCU controller conducts analysis and processing to detect the automatic control function of the wind oil module; the manual control function detection circuit can control the conduction of the photocoupler through the bus driver to realize the function of inputting the ground signal to the wind oil module, thereby detecting the wind oil module. Manual control function.

A wind oil module detection device of a ship fire control system comprises a power supply circuit, a control circuit, a display circuit, an automatic control function detection circuit and a manual control function detection circuit. Among them, the power supply circuit can convert the externally input 24V DC voltage into 5V DC voltage through the power conversion module, and provide 24V and 5V power supply voltages for the internal devices of the detection device at the same time; the control circuit is controlled by the MCU controller and the CAN bus transceiver Control the working state of the detection circuit, and realize the signal collection and transmission between the detection device and the air oil module through the CAN bus; the display circuit includes LED indicator lights, digital tubes and buzzers, which mainly realize status display, fault type prompts, fault These three functions of the alarm; the automatic control function detection circuit can form a loop with the measured wind oil module and the circuit device of the present invention, when the wind oil module has an external passive output signal, the loop conduction, and the conduction signal is passed to The MCU controller conducts analysis and processing to detect the automatic control function of the wind oil module; the manual control function detection circuit can control the conduction of the photocoupler through the bus driver to realize the function of inputting the ground signal to the wind oil module, thereby detecting the wind oil module. Manual control function.

Automatic control function detection circuit and manual control function detection circuit:

The PA0 pin of the MCU is connected to one end of the resistor R1, and the other end of R1 leads to two connection points. The first connection point of R1 is connected to one end of the resistor R2, and the other end of R2 is connected to the anode of the LED indicator D1. cathode ground;

The second connection point of R1 is connected to pin 2 of terminal U1, and pin 1 of U1 is connected to +5V;

The PA1 pin of the MCU is connected to the 3-pin of the enable terminal of the bus driver U3, and the 1-pin of the input terminal of U3 leads to 2 connection points. The first connection point of the 1-pin of the input terminal of U3 is connected to one end of the resistor R3, and the other end of R3 grounding;

The second connection point of pin 1 of U3 is connected to the PA2 pin of the MCU;

The output pin 2 of U3 is connected to one end of the resistor R4, the other end of R4 is connected to the positive input pin 1 of the photocoupler U4, the input negative pin 2 of U4 and the output negative pin 4 are grounded, and the output terminal of U4 is positive Pin 3 is connected to resistor R5, and the other end of R5 is connected to pin 1 of terminal U2.

The models of the power module used for the power supply circuit are: RP12-2405 series, EC5B series, EC1SB series.

The models used by the MCU controller of the control circuit are: MC9S08 series, MC9S12 series, MPC566 series.

The model adopted by the CAN bus transceiver of the control circuit is: ISO1050, PCA82C251, CTM1050, ADM3054 or MAX13041.

The models of the bus driver used in the manual control function detection circuit are: 74HC24X, 74HC54X, 74HC125 series.

The types of optocouplers used in the manual control function detection circuit are: TLP281, TLP521, TLP732.

The invention includes a power supply circuit, a control circuit, a display circuit, an automatic control function detection circuit and a manual control function detection circuit. The system structure of the detection device and the connection method between each part and the measured wind oil module are shown in Figure 1:

The power supply circuit of the detection device is connected to the power port of the module under test through wiring.

The output port of the CAN bus transceiver of the control circuit of the detection device is connected with the CAN bus communication port of the module under test.

The output port of the optocoupler of the detection circuit for the manual control function of the detection device is connected to the ground port of the module under test in sequence.

The input port of the automatic control function detection circuit of the detection device is connected to the output port of the module under test in sequence.

The power supply circuit is mainly composed of terminal blocks, switches and power conversion modules. The external 24V DC voltage can be connected to the detection device through the terminal, and converted into 5V DC voltage by the power conversion module, and at the same time provide 24V/5V power supply voltage for the detection circuit of the detection device.

The control circuit is mainly composed of MCU controller and CAN bus transceiver. The MCU controller transmits signals with the air oil module through the CAN bus, controls the output state of the air oil module, compares the control command with the output state of the air oil module, and determines whether the output of the air oil module is abnormal.

The display circuit is mainly composed of LED indicator light, digital tube, buzzer, inverter and photocoupler. When a fault is detected in the wind oil module, a signal is sent through the MCU controller, and the digital tube is driven after being processed by the inverter to display the channel and fault type of the current faulty module, and the buzzer is driven to sound through a single-channel photoelectric coupler alarm.

The detection circuit of the present invention is mainly composed of an automatic control function detection circuit and a manual control function detection circuit, and can detect four wind oil modules at the same time, and the working principle and component connection mode of each wind oil module corresponding detection circuit are the same.

Taking the detection circuit connected with the air oil module 1 of the present invention as an example, the working process of the detection device is described. The specific connection method of the detection circuit is shown in Figure 2:

PA0, PA1 and PA2 are general I/O ports of MCU.

The PA0 pin of the MCU is connected to one end of the resistor R1, and the other end of R1 leads to two connection points. The first connection point of R1 is connected to one end of the resistor R2, and the other end of R2 is connected to the anode of the LED indicator D1. cathode ground;

The second connection point of R1 is connected to pin 2 of terminal U1, and pin 1 of U1 is connected to +5V;

The PA1 pin of the MCU is connected to the 3-pin of the enable terminal of the bus driver U3, and the 1-pin of the input terminal of U3 leads to 2 connection points. The first connection point of the 1-pin of the input terminal of U3 is connected to one end of the resistor R3, and the other end of R3 grounding;

The second connection point of the input terminal 1 of U3 is connected to the PA2 pin of the MCU;

The output pin 2 of U3 is connected to one end of the resistor R4, the other end of R4 is connected to the positive input pin 1 of the photocoupler U4, the input negative pin 2 of U4 and the output negative pin 4 are grounded, and the output terminal of U4 is positive Pin 3 is connected to resistor R5, and the other end of R5 is connected to pin 1 of terminal U2.

The automatic control function detection circuit conducts the external passive output signal of the air oil module 1 to the detection device through the terminal U1, and at the same time lights up the LED indicator light, and sends the signal after the resistance current limit to the MCU controller for analysis and processing .

The manual control function detection circuit sends a selection signal to the enabling terminal 3 pin of the bus driver U3 in the detection circuit corresponding to the selection module through the PA1 pin of the MCU, and at the same time, the PA2 pin provides a high potential signal to the input terminal 1 pin of the bus driver U3, The photocoupler U4 is driven by the output terminal 2 of U3, so that the positive output terminal 3 of U4 is connected to the output terminal negative terminal 4, thereby controlling the grounding of the terminal 1 of the terminal U2 and transmitting the ground level to the wind oil module. The manual input terminal realizes the manual grounding function of the wind oil module.

Work process and working principle of the present invention are as follows:

The present invention performs cyclic detection on the four air oil modules one by one, and the detection methods are completely the same. Therefore, taking the air oil module 1 as an example, the detection process and working principle are described.

First, the detection device is connected to the power supply port, communication port, output port, and ground port of the air oil module 1 in a corresponding order. After the inspection is correct, the power supply is turned on, and the automatic control function detection switch is turned on. The MCU controller in the detection device passes through the CAN bus. Send status information to the wind oil module 1, after the detected module successfully compares the information, connect the output terminal of the wind oil module 1 with the automatic control function detection circuit of the detection device to form a loop, and at this time the wind oil module 1 will be passive to the outside The output signal is transmitted back to the detection device, the LED indicator lights are turned on in turn, and the signal is transmitted back to the MCU controller, and the signal is analyzed by the MCU controller, so as to realize the automatic control function of the wind oil detection module 1 . When the detection device detects that there is a fault in the automatic control function of the air oil module 1, it will send out a buzzer alarm, and display the current fault channel and fault type through the digital tube. If no fault is detected in the automatic control function of the module, the detection device will start Manual control function detection.

After the detection device completes the detection of the automatic control function of the wind oil module 1, the detection device automatically starts the detection of the manual control function of the wind oil module 1, and the MCU in the detection device sends status information to the wind oil module 1 through the CAN bus, and the detected module After the information is successfully compared, the MCU in the detection device outputs the air oil module selection signal and connects it to the enable terminal of the bus driver, and at the same time sends an input signal to the input terminal of the bus driver to control the output terminal of the bus driver to drive the photocoupler to conduct, and the manual control The output end of the function detection circuit is grounded, and the grounding signal is transmitted to the manual grounding terminal of the air oil module 1, so as to realize the manual grounding function of the air oil module 1. When the detection device detects that the manual control function of the air oil module 1 is faulty, it will send out a buzzer alarm, and prompt the current channel and fault type through the digital tube. If the manual control fault of the module is not detected, the manual control detection of the module will be completed .

After completing the detection of the automatic control part of a module and the manual control part of the module, the automatic detection process of this channel module is over, and the detection device will automatically detect the next wind oil module. After completing the detection of 4 wind oil modules, the detection device will restart Carry out cycle detection in turn to detect the reliability of the module's long-term work.

The invention relates to a wind oil module detection device of a ship fire control system, specifically, a device for detecting the integrity of its circuit function by exchanging information with the wind oil module of the ship fire control system, and at the same time displaying the detected Module failure and detection device for automatic alarm. The invention is composed of a power supply circuit, a control circuit, a display circuit, an automatic control function detection circuit and a manual control function detection circuit. The invention can detect 1 to 4 wind oil modules at the same time, and when a fault is detected in the wind oil module, the detection device can display the fault type of the detected wind oil module and issue an alarm prompt. The invention effectively improves the detection efficiency of the wind oil module, brings convenience to the mass production and function inspection of the wind oil module in the fire control system, and plays an important role in shortening the detection cycle of the product and improving the reliability of the product.

Claims (1)

1. the wind oil module detecting device of a ship's fire fighting control system, comprise power supply circuits, control circuit, display circuit, automatic control function testing circuit and Non-follow control Function detection circuit, it is characterized in that: power supply circuits are connected with the power port of tested module by wiring;

The CAN transceiver output port of control circuit is connected with the CAN COM1 of tested module; Control circuit controls the duty of testing circuit by MCU controller and CAN transceiver, and realizes collection and the transmission of signal between checkout gear and wind oil module by CAN;

The photoelectric coupler output end mouth of Non-follow control Function detection circuit is connected in order with the grounding ports of tested module; Non-follow control Function detection circuit controls by bus driver the function that photoelectrical coupler conducting realizes aweather oily module input grounding signal, thus detects the Non-follow control function of wind oil module;

The input port of automatic control function testing circuit is connected in order with the output port of tested module; Tested wind oil module and circuit arrangement of the present invention are formed loop by automatic control function testing circuit, when wind oil module has external passive output signal, loop conducting, and Continuity signal is reached MCU controller and carry out analyzing and processing, detect the automatic control function of wind oil module;

Power supply circuits are made up of binding post, switch and power transfer module, for outside 24V DC voltage is accessed checkout gear by binding post, and be converted into 5V DC voltage through power transfer module, simultaneously for automatic control function testing circuit and Non-follow control Function detection circuit provide 24V/5V supply voltage, the 24V DC voltage that outside inputs by power supply circuits is converted into 5V DC voltage by power transfer module, and provides the supply voltage of 24V and 5V simultaneously;

Control circuit is formed primarily of MCU controller and CAN transceiver.MCU controller carries out Signal transmissions by CAN and wind oil module, controls the output state of wind oil module, the output state of compared with control instruction and wind oil module, judges that whether the output of wind oil module is abnormal.

Display circuit comprises LED light, charactron, buzzer, reverser and photoelectrical coupler, when detecting air-out oil module and there is fault, signal is sent by MCU controller, via phase inverter process rear drive charactron, the passage of display current failure module and fault type, and drive buzzer to sound alarm via single channel photoelectrical coupler.