CN113341872A - Monitoring method of passenger car excrement collecting device - Google Patents
Monitoring method of passenger car excrement collecting device Download PDFInfo
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- CN113341872A CN113341872A CN202110726742.2A CN202110726742A CN113341872A CN 113341872 A CN113341872 A CN 113341872A CN 202110726742 A CN202110726742 A CN 202110726742A CN 113341872 A CN113341872 A CN 113341872A
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- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/05—Programmable logic controllers, e.g. simulating logic interconnections of signals according to ladder diagrams or function charts
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/10—Plc systems
- G05B2219/11—Plc I-O input output
- G05B2219/1103—Special, intelligent I-O processor, also plc can only access via processor
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]
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Abstract
The invention discloses a monitoring method of a passenger car excrement collecting device, which comprises the following steps: through a plurality of sensors of being connected with the excrement collecting device, the operation information data of the excrement collecting device in the use process is collected and sent to the PLC industrial personal computer, the PLC industrial personal computer compares and analyzes the received operation information data and the normal operation information of the excrement collecting device programmed in advance in the PLC industrial personal computer, the operation state and the fault information of the excrement collecting device are judged, the operation state and the fault information of the excrement collecting device are output after judgment, and the operation state and the fault information of the excrement collecting device are displayed on a display screen of the PLC industrial personal computer or the operation state and the fault information of the excrement collecting device are output to an external Internet of things after judgment. The invention can visually display the main system action state of the excrement collecting device by monitoring and displaying the system state of the excrement collecting device, is convenient for an overhaul operator to solve the running condition of the excrement collecting system in real time and repair bad states in time.
Description
Technical Field
The invention relates to the field of monitoring, in particular to a monitoring method of a passenger car excrement collecting device.
Background
In order to solve the problem of pollution of dirt of passenger cars (such as railway passenger cars, motor train units and coach buses) to a driving line, most passenger cars generally adopt a vacuum excrement collecting device. The vacuum excrement collecting device mainly comprises a sewage tank, a vacuum generator, a controller and a water pressurizing device, wherein the controller comprises an electric control system, a gas path control system, a flushing control switch and the like, and the vacuum generator and the gas path control system can enable the sewage tank to generate negative pressure for sucking in sewage. The water supercharging device can supercharge the water for flushing the sewage tank, and further achieve the best flushing effect.
The existing detection method for the vacuum excrement collecting device comprises the following steps: after the passenger car is put in storage, the vacuum excrement collecting device to be detected is disassembled, the disassembled parts are transported to a special detection test bed for detection, and then transported to the vehicle for reloading after the detection. Such detection mode is wasted time and energy, and is inefficient, moreover can cause certain injury to vacuum excrement collecting device in the disassembly process, and the service life of the vacuum excrement collecting device is reduced. And each passenger train application and maintenance unit can not monitor the state and the fault of the vacuum excrement collecting device in the application process in real time, for example, data such as vacuumizing time, air source pressure, flushing time, vacuum degree, action time sequence and the like in the running state of the vacuum excrement collecting device can not be read, common faults of the vacuum excrement collecting device include low vacuum, overtime, full liquid of a dirt box and the like, more faults of the vacuum excrement collecting device occur discontinuously, and the faults of the fault part can not be reflected again after returning to a warehouse, so that the accurate fault position can not be judged, the fault omission and the fault treatment are incomplete, and the running fault of the excrement collecting device is prominent.
Disclosure of Invention
The invention aims to solve the problems and the defects, and provides a monitoring method of a passenger car excrement collecting device, which can monitor a plurality of excrement collecting devices in use, acquire parameters influencing performance in the running process in real time, analyze control data and judge faults, effectively improve maintenance efficiency, prevent parts from being replaced due to inaccurate fault judgment in the maintenance process and save maintenance cost.
The technical scheme of the invention is realized as follows:
the invention discloses a monitoring method of a passenger car excrement collecting device, which comprises the following steps:
the method comprises the following steps of (A) collecting and sending running information data of the excrement collecting device: the running information data of the excrement collecting device in the using process is collected in real time through a plurality of sensors connected with the excrement collecting device and is sent to the PLC industrial personal computer;
(II) analyzing and judging data: the PLC industrial personal computer is provided with a display screen and a core control device, the core control device is provided with a diagnosis unit, the diagnosis unit is pre-programmed with normal operation information data of the excrement collecting device, and the PLC industrial personal computer compares and analyzes the received operation information data with the normal operation information data in the diagnosis unit to judge the operation state and fault information of the excrement collecting device;
(III) outputting results: the PLC industrial personal computer outputs the running state and the fault information of the excrement collecting device after judgment and displays the running state and the fault information on a display screen of the PLC industrial personal computer or outputs the running state and the fault information of the excrement collecting device to an external Internet of things after judgment.
The PLC industrial personal computer rapidly collects multiple operation information data (also called operation parameters) influencing the performance in the running process of the excrement collecting device in real time through a data collecting output end of the serial port bus interface sensor, and the collecting interval is 15-30 milliseconds (preferably 20 milliseconds); the operation information data collected by the sensor comprises a pressure value of the excrement collecting device, a vacuum value of the extracted sewage tank, a liquid level value of the sewage tank and a time value for flushing the urinal. The pressure sensor for collecting the pressure value is a pressure transmitter for measuring the pressure switch. The vacuum sensor for collecting the vacuum value is a pressure transmitter for measuring the vacuum negative pressure range. The detection parts of the two pressure transmitters are respectively connected with the negative pressure end and the air source end of the vacuum generator of the excrement collecting device. A level sensor for collecting the level of the waste tank is typically mounted on the waste tank to detect the level of the waste tank. The liquid level sensor comprises a sewage tank full liquid sensor and a sewage tank 80% liquid level sensor. The detection of the liquid full of the sewage tank is abbreviated as 100 percent detection, and the detection of the 80 percent liquid level of the sewage tank is abbreviated as 80 percent detection.
Further, the method comprises the following steps: the data collected by the sensor also comprises the vacuumizing time, the pressure maintaining time, the vacuum leakage monitoring and the running state of the excrement collecting device. The running state of the excrement collecting device refers to the state that the excrement collecting device works, such as: pressure maintaining, vacuum pumping, opening of a blow-down valve, cleaning, fault state and the like.
For the convenience of a user to know the fault condition in time, the PLC industrial personal computer is further provided with an alarm and an alarm historical record unit, when the PLC industrial personal computer detects that the excrement collecting device has a fault, the alarm can give an alarm in time through the alarm, and information of each fault alarm is recorded and stored in a database established in the PLC industrial personal computer.
In order to record each operation action of the excrement collecting device, the problems of the excrement collecting device can be quickly found through recent historical data, the PLC industrial personal computer also stores the operation historical data of the excrement collecting device through a database, and the problems of the excrement collecting device can be quickly found through consulting the recent operation historical data.
In order to test whether the excrement collecting device can start corresponding protection after a fault and simultaneously avoid the problem that a plurality of protection functions cause more faults in later use due to the fact that fault tests cannot be simulated, the monitoring method of the passenger car excrement collecting device further comprises the step of carrying out fault simulation tests on the excrement collecting device.
The fault simulation test comprises a low vacuum test, wherein the low vacuum test is to send a flushing signal to a vacuum generator of the excrement collecting device through a PLC industrial personal computer to vacuumize again, shield a vacuum switch signal of the vacuum generator, enable the vacuumizing time of the vacuum generator to reach a set value to form a low vacuum state, and detect whether a controller reports a low vacuum fault.
The fault simulation test has a sewage tank 80% liquid level early warning test, the sewage tank 80% liquid level early warning test is to send a signal simulating the sewage tank 80% liquid level state to a controller of the excrement collecting device through a PLC industrial personal computer, and whether the early warning of the controller is normal or not when the sewage tank 80% liquid level is detected.
The fault simulation test comprises a sewage tank liquid full test, an overtime test, a flushing test, a vacuumizing test and a drain valve fault test;
the sewage tank full liquid test is that a PLC industrial personal computer sends a signal simulating that the liquid level of a sewage tank reaches 100% to a controller of the excrement collecting device, and whether the controller stops working under the liquid level 100% state is detected;
the overtime test is that a PLC industrial personal computer sends a working signal to a vacuum solenoid valve of the excrement collecting device, so that a vacuum generator works to exceed a set value, and whether a controller reports an overtime fault is detected;
the flushing test is that a PLC industrial personal computer directly sends a flushing signal to a controller of the excrement collecting device to replace a flushing button and detect whether the controller works normally or not;
the vacuum pumping test is to send a vacuum pumping working signal to a vacuum solenoid valve of the excrement collecting device through a PLC industrial personal computer and detect whether the vacuum pumping effect is good or not;
and in the blowdown valve fault test, the PLC is used for sending switching information to a blowdown valve of the excrement collecting device and detecting whether the blowdown valve is normally opened or closed.
The display screen of the PLC industrial personal computer is a touch liquid crystal display screen capable of realizing man-machine interaction, a core control device of the PLC industrial personal computer can form a parameter dynamic curve graph with operation information data collected in real time and transmit the parameter dynamic curve graph to the display screen, a simulation fault detection interface connected with the input end of a simulation fault unit is arranged on the display screen, and the PLC industrial personal computer sends a fault execution signal to the controller of the excrement collecting device through a fault instruction in the simulation fault detection interface on the touch display screen to detect the execution condition of the controller of the excrement collecting device. The operation part of the display screen adopts a man-machine friendly interface, is operated by a full touch screen and is controlled by a PLC industrial personal computer, so that the artificial intelligence technology is realized. In addition, a user can check the dynamic conditions of various performance parameters in the running process according to the curve recorded by the parameter dynamic curve graph to judge whether the excrement collecting device has faults or not. According to the pressure maintaining curve recorded by the dynamic curve chart, the vacuum pressure maintaining condition in the running process can be checked. And checking the vacuumizing state and the vacuum pressure maintaining condition of the excrement collecting device according to the curve to judge whether the excrement collecting device has faults or not.
The PLC industrial personal computer is a programmable controller and is also called an industrial personal computer all-in-one machine. The Mitsubishi FX2N programmable controller can be selected, and has the functions of 10AD analog input, 22 switching value input, 20 relay control output and a USB data download port; the display size of the display screen is 4.3 inches, the display screen is a 6-thousand-true-color resistance display screen, the resolution is 480 x 272 pixels, the memory of the display screen is 64M, the USB flash disk storage is supported, the WINCE system is supported, and a network interface and audio can be selected. The system software design in the core control device adopts a PLC programming ladder diagram design method.
The invention automatically collects and monitors various operation information data of the passenger car excrement collecting device in real time in the operation process, and analyzes and judges faults according to the data transmitted by monitoring through the PLC industrial personal computer, so as to judge the fault range and type, and facilitate the targeted inspection of daily maintenance. In addition, the invention can simulate faults of low vacuum, overtime, liquid full, 80% liquid full and the like, plays a positive role in performance detection after fault judgment and maintenance, judges the technical indexes and the repair quality of the excrement collector in use and the repaired excrement collector by comparing the detection data with the manufacturer data, and provides data support for formulating the accurate maintenance scheme of the excrement collector through a data system. The invention realizes the multi-channel and multi-line data fusion technology of the computer with multi-channel information acquisition and multi-output control. The optimized structural design makes the invention more convenient for operation, maintenance and overhaul.
The invention will be further described with reference to the accompanying drawings.
Drawings
FIG. 1 is a schematic diagram of a circuit connection structure of a PLC industrial personal computer, a controller of a feces collecting device and two sensors in the invention;
FIG. 2 is an electrical schematic block diagram of an embodiment of the present invention;
FIG. 3 is a PLC programming ladder of the present invention;
FIG. 4 is a display interface diagram of a display screen and a homepage of the PLC industrial personal computer;
FIG. 5 is a dynamic graph of a parameter transmitted to a display screen by a PLC industrial personal computer;
FIG. 6 is a flowchart illustrating the operation of an embodiment of the present invention.
Detailed Description
The invention discloses a monitoring method of a passenger car excrement collecting device, which comprises the following steps:
the method comprises the following steps of (A) collecting and sending running information data of the excrement collecting device: the running information data of the excrement collecting device in the using process is collected in real time through a plurality of sensors connected with the excrement collecting device and is sent to the PLC industrial personal computer;
(II) analyzing and judging data: the PLC industrial personal computer is provided with a display screen and a core control device, the core control device is provided with a diagnosis unit, the diagnosis unit is pre-programmed with normal operation information data of the excrement collecting device, and the PLC industrial personal computer compares and analyzes the received operation information data with the normal operation information data in the diagnosis unit to judge the operation state and fault information of the excrement collecting device;
(III) outputting results: the PLC industrial personal computer outputs the running state and the fault information of the excrement collecting device after judgment and displays the running state and the fault information on a display screen of the PLC industrial personal computer or outputs the running state and the fault information of the excrement collecting device to an external Internet of things after judgment.
The PLC industrial personal computer rapidly collects multiple operation information data (parameters) influencing the performance in the running process of the excrement collecting device in real time through the data collecting output end of the serial port bus interface sensor, and the collecting interval is 20 milliseconds; the operation information data collected by the sensor comprises a pressure value of the excrement collecting device, a vacuum value of the extracted sewage tank, a liquid level value of the sewage tank and a time value for flushing the urinal. The PLC industrial personal computer can be arranged in a passenger car cabin or on a controller of the excrement collecting device to monitor the excrement collecting device in use. When the excrement collecting device has data change in the operation process, the changed data can immediately collect the PLC industrial personal computer and display the data on the display screen, any working condition and function homoenergetic of the excrement collecting device can be accurately and punctually collected with monitoring data, and meanwhile, the system working state of the excrement collecting device is fed back in real time, and the flushing action, the vacuumizing test and the like of the excrement collecting device can be monitored and displayed in real time. And a core control device in the PLC industrial personal computer performs real-time calculation, analysis, comparison and judgment on the acquired data. In addition, the invention realizes electronic pressure determination, pre-judges the set pressure, and the pressure acquisition resolution is not more than 0.5 percent of the error value. Further, the method comprises the following steps: the data collected by the sensor also comprises the vacuumizing time, the pressure maintaining time, the vacuum leakage monitoring and the running state of the excrement collecting device. As shown in fig. 2, which is a block schematic diagram of the electrical principle of an embodiment of the present invention, since most controllers of the toilet stool device are solenoid valves, the controller is shown as a plurality of switching values, and the control functions of the switching values are different. The air path control system of the excrement collecting device is a plurality of air path control electromagnetic valves connected with the air path pipeline, and the switch of the air path control electromagnetic valves controls the air path, so the air path control electromagnetic valves are shown as a plurality of air path control valves in the figure.
The PLC industrial personal computer is also provided with an alarm and an alarm historical record unit, when the PLC industrial personal computer detects that a fault occurs, the PLC industrial personal computer can give an alarm in time, and the information of each fault alarm is recorded and stored in a database established in the PLC industrial personal computer. The PLC industrial personal computer also saves the operation historical data of the excrement collecting device through the database, and the problems of the excrement collecting device can be quickly found by looking up the recent operation historical data.
The invention compares the real-time collected monitoring data of the excrement collecting device with the manufacturer data (namely normal parameter data which is pre-programmed and designed in the PLC industrial personal computer), judges the technical indexes and repair quality of the excrement collecting device in use and the repaired excrement collecting device, and simultaneously the PLC industrial personal computer has a data modification function, can carry out corresponding parameter setting according to the parameter requirements of the excrement collecting devices of different manufacturer specifications and models, and achieves the comparison of the monitoring data of all models of the railway passenger train excrement collecting device. By referring to the historical data of the historical action recording area, the problems of the excrement collecting device in operation can be quickly found.
The PLC industrial personal computer preferably adopts a Mitsubishi FX2N programmable controller and has the functions of 10AD analog input, 22 switching value input, 20 relay control output, a USB data download port and the like; the display screen is a touch screen, the display size is 4.3 inches, the display screen is a 6-thousand-color resistance touch screen, the resolution is 480 x 272 pixels, the memory of the touch screen is 64M, USB flash disk storage is supported, a WINCE system is supported, and a network port and audio can be selected; PLC: switching value is 12 more, and the output is relay/transistor/mixed output; a communication port: 1 programming port 232, 1 touch screen downloading port and 1 USB port are provided; 1 touch screen can be selected, the analog quantity is more than 4, the input is selected, the analog quantity or the temperature input is selected, and the output is selected from 0-10V/0-20MA output; 232 ports, and 1 485 ports can be optionally arranged on the PLC. The model specification is as follows: X2N-43H-10/16/20/24MT/MR/MRT (-4AD2 DA-485/232). Display size: 97 x 56 mm; the external dimension is as follows: 134 x 102 x 30 mm; opening size: 119 x 93 mm. The industrial control integrated machine is connected with the upper end of a controller of the excrement collecting device in a wiring mode, as shown in fig. 1, BQ144 is a flushing button input signal, BQ142 is a flushing action input signal, BQ143 is a vacuum solenoid valve action input signal, BQ141 is a drain valve closing input signal, BQ140 is a drain valve opening input signal, BQ145 is a low vacuum input signal, BQ146 is 80% (short for 80% of liquid level of the sewage tank), BQ147 is 100% (short for 100% of liquid level of the sewage tank) and BQ133 is an empty tank (short for the empty sewage tank). The pressure sensor for detecting pressure is generally arranged outside an OUT port of a steam-water separator of a excrement collecting device, is fixed and is connected with an AD01 wire seat of a PLC display screen. The existing MIK-P300 series pressure transmitter is optimized, the pressure sensitive core adopts a high-performance inlet silicon piezoresistive pressure oil-filled core body, and an internal special integrated circuit converts millivolt signals of the sensor into standard voltage, current or frequency signals, and can be directly and conveniently connected with a computer circuit interface card, a control instrument, an intelligent instrument, a PLC industrial personal computer and the like. The long-distance transmission can adopt a current output mode. The stainless steel sealing structure has the characteristics of small volume, light weight, full stainless steel sealing structure and the like, and can work in a corrosive environment. The product is convenient and simple to install and has high shock resistance and impact resistance. The vacuum sensor for detecting the vacuum value adopts the existing model of MIK-P300-0.1-0 MPa-V1-B2-C3-J3P 1. The measuring range is-0.1-0 MPa; the output is 0-10V; the power supply is 24V; mounting thread G1/4. The vacuum sensor is arranged at the position of the original vacuum meter and is connected with a PLC display screen AD03 wire seat.
In order to test whether the excrement collecting device can start corresponding protection after the fault and simultaneously avoid the problem that some protection functions cannot be tested due to the fact that the fault cannot be simulated, the invention is also provided with a fault simulation test step (namely, the fault simulation test function is arranged), and the PLC industrial personal computer sends instructions to simulate the faults of low vacuum, overtime, liquid level, 80% liquid level and the like to test whether the excrement collecting device can start corresponding protection after the fault. Specifically, a fault simulation unit is arranged on the PLC industrial personal computer, a plurality of fault execution signals (execution instructions) for simulating fault data of the excrement collecting device are arranged on the fault simulation unit, a fault simulation test is carried out through the PLC industrial personal computer, and the fault execution signals are sent to a controller of the excrement collecting device to carry out fault test. The performance of the excrement collecting device is judged before use and after maintenance, and the equipment can judge the fault range and type according to monitoring data, so that the targeted inspection and processing of daily maintenance are facilitated. The faults of the simulated excrement collecting device on the fault simulation unit generally comprise low vacuum faults, overtime faults, full liquid faults and 80% liquid level early warning of a sewage tank. The PLC industrial controller can carry out fault detection test on the controller of the excrement collecting device and test on single functions of the excrement collecting device by a method of simulating fault operation. If the sewage tank 80% liquid level early warning test (80% test for short), the 80% liquid level state of the sewage tank is simulated, a signal is given to a controller of the excrement collecting device, and whether the early warning of the controller is normal when the sewage tank is at the 80% liquid level is detected; a full liquid test (100% test for short) is carried out, the liquid level of the sewage tank is simulated to reach 100% state, a signal is sent to the controller, and whether the system stops working or not is detected when the liquid level of the controller is 100% state; an overtime test, which gives a working signal to a vacuum electromagnetic valve of the excrement collecting device to enable a vacuum generator to work for more than a set value (for example, set to be 120 seconds); in the low vacuum test, the flushing signal is sent to the excrement collecting device for vacuumizing again, the vacuum switch signal is shielded, the vacuum generator is vacuumized for 120 seconds, and whether the controller reports a low vacuum fault is detected; a flushing test, which replaces a flushing button, directly sends a flushing signal to the controller and detects whether the controller works normally; a flushing test, which gives a working signal to a flushing electromagnetic valve and detects whether the flushing effect is good; a vacuum pumping test is carried out, wherein a working signal is given to a vacuum solenoid valve to detect whether the vacuum pumping effect is good or not; performing fault test on a drain valve (also called a drain valve), controlling the drain valve to be opened, and detecting whether the drain valve is normally opened; and controlling the blowoff valve to be closed, and detecting whether the blowoff valve is normally closed.
The display screen of PLC industrial computer is the touch liquid crystal display that can the man-machine interdynamic, and the core control device of PLC industrial computer can form the parameter dynamic curve graph with the operation information data that gather in real time and transmit to the display screen, as shown in figure 5, has the demonstration pressurize curve on the interface of display screen. A display screen of the PLC industrial personal computer is provided with a touch system fault detection interface, and the functional condition of the excrement collecting device is simulated and detected by operating the touch system fault detection interface. As shown in fig. 4, the display screen can display pressure value, vacuum value, evacuation time, flushing time, pressure maintaining time, vacuum leakage monitoring, excrement collector system state, sewage tank liquid level, alarm display area, history action record, alarm history and the like. The excrement collecting device monitor can monitor the current system state, and can judge faults and display the current faults according to the action sequence and various numerical values of the excrement collecting device monitor.
The system software design as shown in fig. 3 adopts a PLC programming ladder diagram design scheme. The system management software technical indexes of the invention are as follows: 1. operating the system: WINCE system. The system default setting can be set, and the language conversion, the LCD backlight time, the networking communication interval, the buzzer function and the buzzer alarm can be set. And a database can be created in the PLC industrial personal computer and can be downloaded to the computer through the U disk to be checked or printed. Through the data information downloaded from the USB flash disk, the alarm data of the vehicle can be checked and analyzed through an HMI (human machine interface model) database browser in a computer, and meanwhile, historical data of the excrement collecting device can be checked through an EMXCEL (empirical mode decomposition) working table to assist in analyzing specific reasons of faults.
In the invention, the PLC industrial personal computer outputs the running state and fault information of the excrement collecting device to the external Internet of things after comparison, analysis and judgment, and can use a 485 communication function for networking communication, namely, running and monitoring data of any monitoring instrument in the network can be checked on any monitoring instrument in the network. For example, a worker installed on a passenger train can search the use condition and the fault phenomenon of the excrement collecting device of other vehicles on the PLC industrial personal computer of any vehicle.
The field experiment test of the method of the invention comprises the following steps: the method carries out simulation comprehensive test on the marshalling passenger car excrement collecting device. The main purpose of the test is to verify whether all functions of the test program are normally operated and whether each data criterion is correct in the test process.
The test method comprises the following steps: monitoring data is accessed into the passenger car excrement collecting device system, manual detection is carried out by using a corresponding detection tool, and the detection data is compared with data records derived through monitoring, so that whether the monitoring data is accurate or not is calculated. And repeatedly testing various faults of the artificial excrement collecting device to verify whether the program algorithm is strict and correct under the fault condition and whether the monitoring result is consistent with the set fault.
In 10 months in 2020, testers, software and hardware developers carry out monitoring tests on various types of excrement collecting devices in workshops. The test result basically accords with the real-time test data of the excrement collecting device, and the design expectation is achieved. Under the field environment, the device meets the requirements of design on functionality, stability, accuracy and the like.
While the invention has been described with reference to specific embodiments, this description is not meant to be construed in a limiting sense. Other variations of the disclosed embodiments, as would be appreciated by those skilled in the art with reference to the description of the invention, are contemplated as falling within the scope of the appended claims.
Claims (10)
1. A monitoring method of a passenger car excrement collecting device is characterized by comprising the following steps:
the method comprises the following steps of (A) collecting and sending running information data of the excrement collecting device: the running information data of the excrement collecting device in the using process is collected in real time through a plurality of sensors connected with the excrement collecting device and is sent to the PLC industrial personal computer;
(II) analyzing and judging data: the PLC industrial personal computer is provided with a display screen and a core control device, the core control device is provided with a diagnosis unit, the diagnosis unit is pre-programmed with normal operation information data of the excrement collecting device, and the PLC industrial personal computer compares and analyzes the received operation information data with the normal operation information data in the diagnosis unit to judge the operation state and fault information of the excrement collecting device;
(III) outputting results: the PLC industrial personal computer outputs the running state and the fault information of the excrement collecting device after judgment and displays the running state and the fault information on a display screen of the PLC industrial personal computer or outputs the running state and the fault information of the excrement collecting device to an external Internet of things after judgment.
2. A method for monitoring a passenger car excrement collecting device according to claim 1, wherein: the PLC industrial personal computer rapidly collects multiple items of operation information data influencing performance in the running process of the excrement collecting device through the data collecting output end of the serial port bus interface sensor, and the collecting interval is 15-30 milliseconds; the operation information data collected by the sensor comprises a pressure value of the excrement collecting device, a vacuum value of the extracted sewage tank, a liquid level value of the sewage tank and a time value for flushing the urinal.
3. A method for monitoring a passenger car excrement collecting device according to claim 2, wherein: the operation information data collected by the sensor also comprises the vacuumizing time, the pressure maintaining time, the vacuum leakage monitoring and the operation state of the excrement collecting device.
4. A method for monitoring a passenger car excrement collecting device according to claim 1, wherein: the PLC industrial personal computer is also provided with an alarm and an alarm historical record unit, when the PLC industrial personal computer detects that a fault occurs, the PLC industrial personal computer can give an alarm in time through the alarm, and information of each fault alarm is recorded and stored in a database established in the PLC industrial personal computer.
5. The method for monitoring a passenger car excrement collecting device according to claim 4, wherein: the database of the PLC industrial personal computer stores the operation historical data of the excrement collecting device, and the problems of the excrement collecting device can be quickly found by looking up the recent operation historical data.
6. A method for monitoring a passenger car excrement collecting device according to claim 1, wherein: the method comprises the steps of carrying out a fault simulation test on the excrement collecting device, and specifically comprises the steps of arranging a fault simulation unit capable of carrying out the fault simulation test on the excrement collecting device on the PLC industrial personal computer, arranging a plurality of fault execution signals for simulating operation fault data of the excrement collecting device on the fault simulation unit, sending the fault execution signals to a controller of the excrement collecting device through the PLC industrial personal computer, and testing whether the controller can start corresponding protection after the fault occurs in the excrement collecting device.
7. The method for monitoring a passenger car excrement collecting device according to claim 6, wherein: the fault simulation test comprises a low vacuum test, wherein the low vacuum test is to send a flushing signal to a vacuum generator of the excrement collecting device through a PLC industrial personal computer to vacuumize again, shield a vacuum switch signal of the vacuum generator, enable the vacuumizing time of the vacuum generator to reach a set value to form a low vacuum state, and detect whether a controller reports a low vacuum fault.
8. A method for monitoring a passenger car excrement collecting device according to claim 6 or 7, wherein: the fault simulation test has a sewage tank 80% liquid level early warning test, the sewage tank 80% liquid level early warning test is to send a signal simulating the sewage tank 80% liquid level state to a controller of the excrement collecting device through a PLC industrial personal computer, and whether the early warning of the controller is normal or not when the sewage tank 80% liquid level is detected.
9. The method for monitoring a passenger car excrement collecting device according to claim 6, wherein: the fault simulation test comprises a sewage tank liquid full test, an overtime test, a flushing test, a vacuumizing test and a drain valve fault test;
the sewage tank full liquid test is that a PLC industrial personal computer sends a signal simulating that the liquid level of a sewage tank reaches 100% to a controller of the excrement collecting device, and whether the controller stops working under the liquid level 100% state is detected;
the overtime test is that a PLC industrial personal computer sends a working signal to a vacuum solenoid valve of the excrement collecting device, so that a vacuum generator works to exceed a set value, and whether a controller reports an overtime fault is detected;
the flushing test is that a PLC industrial personal computer directly sends a flushing signal to a controller of the excrement collecting device to replace a flushing button and detect whether the controller works normally or not;
the vacuum pumping test is to send a vacuum pumping working signal to a vacuum solenoid valve of the excrement collecting device through a PLC industrial personal computer and detect whether the vacuum pumping effect is good or not;
and in the blowdown valve fault test, the PLC is used for sending switching information to a blowdown valve of the excrement collecting device and detecting whether the blowdown valve is normally opened or closed.
10. The method for monitoring a passenger car excrement collecting device according to claim 6, wherein: the display screen of the PLC industrial personal computer is a touch liquid crystal display screen capable of realizing man-machine interaction, a core control device of the PLC industrial personal computer can form a parameter dynamic curve graph from operation information data collected in real time and transmit the parameter dynamic curve graph to the display screen, a simulation fault detection interface connected with the input end of the simulation fault unit is further arranged on the display screen, and the PLC industrial personal computer sends a fault execution signal to a controller of the excrement collecting device through a fault instruction in the simulation fault detection interface on the touch display screen so as to detect the execution condition of the controller of the excrement collecting device.
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