Test bench timing alarm protection system and method

Abstract

The present invention belongs to the technical field of internal combustion engines and discloses a test bench timing alarm protection system and method, the method comprising: a pressure vessel receiving compressed air input through a first gas control valve, and transmitting the compressed air to a monitoring alarm device through a pressure measuring pipeline; the monitoring alarm device receiving the compressed air transmitted by the pressure vessel, and obtaining a pressure value of the pressure vessel based on the compressed air; the monitoring alarm device alarming when the pressure value of the pressure vessel exceeds a preset pressure value, and sending a corresponding control signal to an electronic control unit and a throttle valve according to the preset pressure value level reached, so that the electronic control unit and the throttle valve take corresponding protective measures. Through the above-mentioned method, the timing alarm device is integrated into the test bench, and protective actions and alarm reminders are generated for the engine at regular intervals, thereby realizing linkage with the test bench.

Description

Technical Field

[0001] The present invention relates to the technical field of internal combustion engines, and in particular to a test bench timing alarm protection system and method. Background Art

[0002] The timed alarm devices currently available on the market can only serve as a reminder to operators for scheduled maintenance and are unable to integrate with the engine within the test bench to generate protective actions. If the operator neglects the alarm reminder and fails to perform maintenance on the test bench within the specified time, there is a risk of engine damage or test abnormalities. Therefore, how to integrate the timed alarm device into the test bench to generate regular engine protection actions and alarm reminders has become a pressing technical problem. Currently, the timed alarm devices used on test benches are mainly simple timed alarms controlled by single-chip microcomputers. These alarms can only serve as a single alarm to remind operators on a regular basis and cannot be integrated with the test bench for linkage.

[0003] The above content is only used to assist in understanding the technical solution of the present invention and does not constitute an admission that the above content is prior art. Summary of the Invention

[0004] The main purpose of the present invention is to provide a test bench timing alarm protection system and method, aiming to solve the technical problem that it is difficult to integrate the timing alarm device into the test bench to generate timing protection action and alarm reminder for the engine.

[0005] To achieve the above-mentioned object, the present invention provides a test bench timing alarm protection system, the test bench timing alarm protection system comprising: a monitoring alarm device and a pressure vessel, the monitoring alarm module being connected to the pressure vessel;

[0006] The pressure vessel is used to receive the compressed air input through the first gas control valve and transmit the compressed air to the monitoring alarm device through the pressure measuring pipeline;

[0007] The monitoring and alarm device is used to receive the compressed air transmitted by the pressure vessel and obtain the pressure value of the pressure vessel based on the compressed air;

[0008] The monitoring alarm device is also used to alarm when the pressure value of the pressure vessel exceeds a preset pressure value, and send corresponding control signals to the electronic control unit and the throttle according to the preset pressure value level reached, so that the electronic control unit and the throttle take corresponding protective measures.

[0009] Optionally, the gantry timing alarm protection system includes: a monitoring alarm device;

[0010] The monitoring alarm device is further configured to alarm when the pressure vessel reaches a first preset pressure value;

[0011] The monitoring and alarm device is further configured to alarm and send corresponding power supply signals and throttle signals to the electronic control unit and the throttle valve when the pressure vessel reaches a second preset pressure value, so that the electronic control unit can reduce the power supply voltage and the throttle valve to control the engine to idle safely;

[0012] The monitoring alarm device is also used to alarm and send corresponding power signals and throttle signals to the electronic control unit and throttle when the pressure vessel reaches a third preset pressure value, so that the electronic control unit disconnects the power supply and throttle to control the engine to stop and cut off the oil.

[0013] Optionally, the monitoring alarm device comprises: a pressure transmitter, a digital-to-analog converter, a data acquisition module and at least one buzzer connected in sequence, wherein the pressure transmitter is connected to the pressure vessel;

[0014] The pressure transmitter is used to receive compressed air transmitted by the pressure vessel, obtain the pressure value of the pressure vessel according to the compressed air, and send the pressure value to the digital-to-analog converter;

[0015] The digital-to-analog converter is used to receive the pressure value sent by the pressure transmitter, perform digital-to-analog conversion on the pressure value, and send the pressure value of the pressure vessel after digital-to-analog conversion to the data acquisition module;

[0016] The data acquisition module is used to control the buzzer to alarm according to the pressure value of the pressure vessel after the digital-to-analog conversion and send corresponding power signals and throttle signals to the electronic control unit and the engine according to the preset pressure value level reached, so that the electronic control unit and the engine can take corresponding protective measures.

[0017] Optionally, the gantry timing alarm protection system comprises: a switch control box, a first gas control valve and a second gas control valve, wherein the first gas control valve and the second gas control valve are respectively connected to the gas inlet and the gas outlet of the pressure vessel, and the switch control box is respectively connected to the first gas control valve and the second gas control valve;

[0018] The first gas control valve is used to receive compressed air and, when the switch control box is closed, to block the compressed air from entering the pressure vessel and input the compressed air into the pressure vessel;

[0019] The second gas control valve is used to discharge the compressed air in the pressure container when the switch control box is controlled to open.

[0020] Optionally, the gantry timing alarm protection system further comprises: a pressure regulating valve and a gas flow meter, wherein the gas flow meter is connected to the first gas control valve, and the pressure regulating valve is connected to the gas flow meter;

[0021] The pressure regulating valve is used to receive the compressed air to be processed, regulate the compressed air according to the pressure that the pressure vessel can withstand, and output the regulated compressed air to the gas flow meter;

[0022] The pressure regulating valve is further used to automatically close the output port and stop transmitting compressed air when the pressure of the pressure vessel reaches a preset limit;

[0023] A gas flow meter is used to receive the regulated compressed air input through the pressure regulating valve, and calculate the compressed air rate and flow value in a preset manner according to the volume of the pressure vessel, perform gas regulation according to the compressed air rate and the flow value to obtain compressed air, and transmit the compressed air to the first gas control valve.

[0024] Furthermore, to achieve the above-mentioned purpose, the present invention also provides a gantry timing alarm protection method, which is applied to a gantry timing alarm protection system. The gantry timing alarm protection system comprises: a monitoring alarm device, a switch control box, and a pressure regulating valve, a gas flow meter, a first gas control valve, a pressure vessel, and a second gas control valve connected in sequence, the monitoring alarm device and the pressure vessel, the monitoring alarm module being connected to the pressure vessel, and the switch control box being connected to the first gas control valve and the second gas control valve respectively;

[0025] The test bench timing alarm protection method includes: a pressure vessel receives compressed air input through a first gas control valve, and transmits the compressed air to a monitoring alarm device through a pressure measurement pipeline;

[0026] The monitoring and alarm device receives the compressed air transmitted by the pressure vessel and obtains the pressure value of the pressure vessel according to the compressed air;

[0027] The monitoring alarm device alarms when the pressure value of the pressure vessel exceeds a preset pressure value, and sends a corresponding control signal to the electronic control unit and the throttle valve according to the preset pressure value level reached, so that the electronic control unit and the throttle valve take corresponding protective measures.

[0028] Optionally, the monitoring alarm device issues an alarm when the pressure value of the pressure vessel exceeds a preset pressure value, and sends a corresponding control signal to the electronic control unit and the throttle valve according to the preset pressure value level reached, so that the electronic control unit and the throttle valve take corresponding protective measures, including:

[0029] The monitoring alarm device alarms when the pressure vessel reaches a first preset pressure value;

[0030] The monitoring alarm device alarms and sends corresponding power supply signals and throttle signals to the electronic control unit and the throttle valve when the pressure vessel reaches a second preset pressure value, so that the electronic control unit lowers the power supply voltage and the throttle valve to control the engine to idle safely;

[0031] When the pressure vessel reaches a third preset pressure value, the monitoring alarm device issues an alarm and sends a corresponding power signal and throttle signal to the electronic control unit and the throttle valve, so that the electronic control unit disconnects the power supply and the throttle valve to control the engine to stop and cut off the oil.

[0032] Optionally, the monitoring alarm device issues an alarm when the pressure value of the pressure vessel exceeds a preset pressure value, and sends a corresponding control signal to the electronic control unit and the throttle valve according to the preset pressure value level reached, so that the electronic control unit and the throttle valve take corresponding protective measures, including:

[0033] The pressure transmitter receives the compressed air transmitted by the pressure vessel, obtains the pressure value of the pressure vessel according to the compressed air, and sends the pressure value to the digital-to-analog converter;

[0034] The digital-to-analog converter receives the pressure value sent by the pressure transmitter, performs digital-to-analog conversion on the pressure value, and sends the pressure value of the pressure vessel after the digital-to-analog conversion to the data acquisition module;

[0035] The data acquisition module controls the buzzer to alarm according to the pressure value of the pressure vessel after the digital-to-analog conversion and sends the corresponding power signal and throttle signal to the electronic control unit and the engine according to the preset pressure value level reached, so that the electronic control unit and the engine take corresponding protection measures.

[0036] Optionally, after the pressure vessel receives the compressed air input through the first gas control valve and transmits the compressed air to the monitoring and alarm device through the pressure measuring pipeline, the system further comprises:

[0037] The first gas control valve receives compressed air and, when the switch control box is closed, blocks the compressed air from entering the pressure vessel and inputs the compressed air into the pressure vessel;

[0038] The second gas control valve discharges the compressed air in the pressure container when the switch control box is controlled to open.

[0039] Optionally, before the pressure vessel receives the compressed air input through the first gas control valve and transmits the compressed air to the monitoring and alarm device through the pressure measuring pipeline, it further includes:

[0040] The pressure regulating valve receives the compressed air to be processed, regulates the compressed air according to the pressure that the pressure vessel can withstand, and outputs the regulated compressed air to the gas flow meter;

[0041] The gas flow meter receives the regulated compressed air input through the pressure regulating valve, and calculates the compressed air rate and flow value in a preset manner according to the volume of the pressure vessel, performs gas regulation according to the compressed air rate and the flow value, obtains compressed air, and transmits the compressed air to the first gas control valve.

[0042] The present invention provides a monitoring alarm device and a pressure vessel in the test bench timing alarm protection system, wherein the monitoring alarm module is connected to the pressure vessel; the pressure vessel is used to receive compressed air input through a first gas control valve, and transmit the compressed air to the monitoring alarm device through a pressure measuring pipeline; the monitoring alarm device is used to receive the compressed air transmitted by the pressure vessel, and obtain the pressure value of the pressure vessel based on the compressed air; the monitoring alarm device is also used to alarm when the pressure value of the pressure vessel exceeds a preset pressure value, and send a corresponding control signal to the electronic control unit and the throttle according to the preset pressure value level reached, so that the electronic control unit and the throttle take corresponding protection measures, thereby realizing the integration of the timing alarm device into the test bench and regularly generating protective actions and alarm reminders for the engine. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] Figure 1 This is a structural block diagram of the first embodiment of the gantry timing alarm protection system of the present invention;

[0044] Figure 2 This is a structural block diagram of a second embodiment of the gantry timing alarm protection system of the present invention;

[0045] Figure 3 This is the overall structural diagram of the test bench timing alarm protection system of the present invention;

[0046] Figure 4 This is a flow chart of the first embodiment of the test bench timing alarm protection method of the present invention;

[0047] Figure 5 This is a flow chart of a second embodiment of the test bench timing alarm protection method of the present invention;

[0048] The purpose, features and advantages of the present invention will be further described with reference to the accompanying drawings and in conjunction with the embodiments.

[0049] Description of Figure Numbers:

[0050] Label name Label name 10 pressure regulating valve 60 switch control box 20 Gas flow meter 70 Monitoring alarm device 30 First gas control valve 701 Pressure transmitter 40 pressure vessels 702 Digital-to-Analog Converter 50 Second gas control valve 703 Data acquisition module 704 buzzer DETAILED DESCRIPTION

[0051] It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0052] Reference Figure 1 , Figure 1 This is a structural block diagram of the first embodiment of the platform timing alarm protection system of the present invention.

[0053] In this embodiment, a monitoring alarm device 70 and a pressure vessel 40 are provided in the gantry timing alarm protection system, wherein the monitoring alarm module 70 is connected to the pressure vessel 40;

[0054] The pressure vessel 40 is used to receive the compressed air input through the first gas control valve 30 and transmit the compressed air to the monitoring alarm device 70 through the pressure measuring pipeline;

[0055] The monitoring and alarm device 70 is used to receive the compressed air transmitted by the pressure vessel 40 and obtain the pressure value of the pressure vessel 40 according to the compressed air;

[0056] The monitoring alarm device 70 is also used to alarm when the pressure value of the pressure container 40 exceeds a preset pressure value, and send corresponding control signals to the electronic control unit and the throttle according to the preset pressure value level reached, so that the electronic control unit and the throttle take corresponding protective measures.

[0057] It should be noted that a group of air pressure sampling tubes are connected to the monitoring and alarm device 70 outside the pressure vessel 40. The gas flow meter 20 is used to adjust the gas flow rate according to actual needs, and the pressure value in the pressure vessel 40 is controlled to increase steadily according to the inflation time, and the pressure value is collected in the pressure transmitter 10.

[0058] The gantry timing alarm protection system further includes: a switch control box 60, a first gas control valve 30, and a second gas control valve 50, wherein the first gas control valve 30 and the second gas control valve 50 are respectively connected to the gas inlet and the gas outlet of the pressure vessel 40, and the switch control box 60 is respectively connected to the first gas control valve 30 and the second gas control valve 50;

[0059] The first gas control valve 30 is used to receive compressed air and, when the switch control box 60 is closed, blocks the compressed air from entering the pressure vessel 40 and inputs the compressed air into the pressure vessel 40;

[0060] The second gas control valve 50 is used to discharge the compressed air in the pressure container 40 when the switch control box 60 is controlled to open.

[0061] It should be noted that this device is equipped with two sets of double-contact switch control valves, one normally open and one normally closed. The manual switch is connected to an external switch control box. During daily use, the normally open control valve continuously vents air. When the pressure vessel 40 reaches a specified pressure value and triggers an alarm, the switch control box 50 is pressed to release the pressure. At this time, the normally open control valve closes, blocking the entry of compressed air into the pressure vessel 40. The normally closed control valve opens, releasing the gas in the pressure vessel into the atmosphere, thereby clearing the gas in the pressure vessel 40. After the pressure is released, the button returns to its original position, and the normally open and normally closed control valves automatically reset to enter the next cycle.

[0062] The gantry timing alarm protection system further comprises: a pressure regulating valve 10 and a gas flow meter 20, wherein the gas flow meter 10 is connected to the first gas control valve 30, and the pressure regulating valve is connected to the gas flow meter;

[0063] The pressure regulating valve 10 is used to receive the compressed air to be processed, regulate the compressed air according to the pressure that the pressure vessel 40 can withstand, and output the regulated compressed air to the gas flow meter 20;

[0064] The pressure regulating valve 10 is also used to automatically close the output port of the pressure vessel 40 when the pressure reaches a preset limit, thereby stopping the transmission of compressed air;

[0065] The gas flow meter 20 is used to receive the regulated compressed air input through the pressure regulating valve 10, and calculate the compressed air rate and flow value in a preset manner according to the volume of the pressure vessel 40, perform gas regulation according to the compressed air rate and the flow value, obtain compressed air, and transmit the compressed air to the first gas control valve 30.

[0066] It should be noted that the pressure regulating valve 10 adjusts the pressure value according to the pressure that the pressure vessel can withstand. When the pressure vessel reaches the set limit, the regulating valve automatically closes the output port, and the gas is blocked from entering the pressure vessel, ensuring that the pressure vessel 40 and the rear pressure sensor are not overloaded and damaged due to continuous gas output.

[0067] It should be understood that the gas flow meter: This device can adjust the airflow rate. When used, it is combined with the volume of the pressure vessel and uses repeated calibration and rate conversion to adjust the gas flow value. This method can control the timed linear pressure value of the pressure vessel. The specific calculation method is as follows: The gas flow rate calculation formula 1 is: Time required to inflate the pressure vessel:

[0068] A-Cross-sectional area of ​​the inflation valve hole (cm 2 )

[0069] Bt-time required for pressure to rise from PO to P during inflation

[0070] Pa-atmospheric pressure (Pa)

[0071] P2-pressure inside the gas container (Pa)

[0072] K-adiabatic index (take K = 1.4)

[0073] R-gas constant (8.3143 J / K.mol)

[0074] M-gas temperature (K)

[0075] Q-flow rate (Pa.m 3 / s)

[0076] According to the actual pipeline aperture of the alarm device, the gas flow rate is calculated using Formula 1. The small hole flow value is obtained and then inserted into the formula for calculating the time required for pressure vessel inflation to calculate the time required for the entire inflation process. The gas flow meter gas flow value is then adjusted according to actual needs to achieve the ideal inflation time and container pressure value.

[0077] In this embodiment, a monitoring alarm device and a pressure vessel are provided in the test bench timing alarm protection system. The monitoring alarm module is connected to the pressure vessel. The pressure vessel is configured to receive compressed air input through a first gas control valve and transmit the compressed air to the monitoring alarm device via a pressure measurement line. The monitoring alarm device is configured to receive the compressed air transmitted by the pressure vessel and determine the pressure value of the pressure vessel based on the compressed air. The monitoring alarm device is further configured to generate an alarm when the pressure value of the pressure vessel exceeds a preset pressure value and, based on the preset pressure value level reached, to send a corresponding control signal to the electronic control unit and the throttle valve, so that the electronic control unit and the throttle valve take corresponding protective measures. This addresses the problem that current timing alarm devices on the market can only simply remind operators to perform scheduled maintenance but cannot be combined with protective actions for the engine within the test bench. If the operator neglects the alarm reminder and fails to promptly maintain the engine within the test bench within the rated time, there is a risk of engine damage or test anomalies.

[0078] Reference Figure 2 , Figure 2 This is a structural block diagram of the second embodiment of the test stand timing alarm protection system of the present invention. Based on the above-mentioned first embodiment, the second embodiment of the test stand timing alarm protection system of the present invention is proposed.

[0079] This embodiment provides a monitoring alarm device 70 in the gantry timing alarm protection system;

[0080] The monitoring alarm device 70 is also used to alarm when the pressure vessel 40 reaches a first preset pressure value;

[0081] The monitoring alarm device 70 is further configured to alarm and send corresponding power supply signals and throttle signals to the electronic control unit and the throttle valve when the pressure vessel 40 reaches a second preset pressure value, so that the electronic control unit can reduce the power supply voltage and the throttle valve to control the engine to idle safely;

[0082] The monitoring alarm device 70 is also used to alarm and send corresponding power signals and throttle signals to the electronic control unit and throttle when the pressure container 40 reaches a third preset pressure value, so that the electronic control unit disconnects the power supply and throttle to control the engine to stop and cut off the oil.

[0083] The monitoring alarm device 70 includes: a pressure transmitter 701, a digital-to-analog converter 702, a data acquisition module 703 and at least one buzzer 704 connected in sequence, wherein the pressure transmitter is connected to the pressure vessel;

[0084] The pressure transmitter 701 is used to receive the compressed air transmitted by the pressure vessel 40 , obtain the pressure value of the pressure vessel 40 according to the compressed air, and send the pressure value to the digital-to-analog converter 702 .

[0085] The digital-to-analog converter 702 is used to receive the pressure value sent by the pressure transmitter, perform digital-to-analog conversion on the pressure value, and send the pressure value of the pressure vessel after digital-to-analog conversion to the data acquisition module;

[0086] The data acquisition module 703 is used to control the buzzer alarm according to the pressure value of the pressure vessel after the digital-to-analog conversion and send the corresponding power signal and throttle signal to the electronic control unit and the engine according to the preset pressure value level reached, so that the electronic control unit and the engine can take corresponding protection measures.

[0087] In a specific implementation, the monitoring and alarm device 70 includes software that monitors the pressure of the pressure vessel 40 in real time and includes a set of alarm buzzers 704 as a warning. When integrated into an engine test system, this software implements segmented pressure limits, sending corresponding power and throttle signals to the test bench. This software then uses current to control the ECU power supply and throttle power supply as alarm actions, such as alarm (engine inactivity), alarm (reducing throttle power supply, lowering the throttle, and causing the engine to idle), and alarm (cutting ECU power supply, causing the engine to shut down).

[0088] It should be noted that the compressed air is transmitted to the monitoring and alarm device 70, and is transmitted to the pressure vessel 40 through the gas flow meter with a set flow value; the pressure vessel 40 reaches the required pressure value within the rated time based on the set gas flow value, and transmits the pressure value to the pressure transmitter 701 through the top air pressure sampling tube; after the pressure transmitter 701 collects the pressure, it sends the value to the digital-to-analog converter 702 for digital-to-analog conversion, and then the data acquisition module 703 collects the readings for monitoring; the data acquisition module 703 sets the corresponding alarm limit and alarm action based on the pressure value collected in the pressure vessel 40 as a reference according to needs, and the set limit and alarm action are read by the data acquisition module 703; when the alarm condition is met, the data acquisition module 703 reads the alarm action and sends the corresponding power signal or throttle signal to the test bench to disconnect the ECU power supply (shutdown) or reduce the power supply of the throttle unit (speed reduction).

[0089] In specific implementation, Figure 3 The overall structural block diagram of the test bench timing alarm protection system of the present invention, wherein ① pressure valve; ② gas flow meter; ③ gas control valve (normally open); ④ pressure vessel; ⑤ gas pressure measuring point; ⑥ reset switch; ⑦ gas control valve (normally closed); ⑧ pressure transmitter; ⑨ digital-to-analog converter; ⑩ data acquisition system; alarm; Test system; Electronic control unit; Throttle; Engine. The compressed air enters the ② gas flow meter after being connected to the ① pressure regulating valve. The required timed linear pressure value of the ④ pressure vessel in this example is: the first section: at 10 minutes, the pressure value is 130±5Kpa; the second section: at 15 minutes, the pressure value is 170±5Kpa; the third section: at 20 minutes, the pressure value is 190±5Kpa. According to the above three-stage requirements, the calculation formula mentioned in "2-1-2" above is used to calculate and adjust the gas flow value of the ② gas flow meter; the compressed air enters the ③ gas control valve (normally open) through the ② gas flow meter at the set flow rate and is sent to the ④ pressure vessel. At this time, through the ⑤ gas pressure measuring point at the top of the ④ pressure vessel, the current pressure value is transmitted to the ⑧ pressure transmitter, and after being converted into a digital signal by the ⑨ digital-to-analog converter, it is displayed in the ⑩ data acquisition system; at this time, the corresponding segmented alarm limit and alarm action are set in the ⑩ data acquisition system, thereby triggering Alarm alarm and Test the system alarm action. The alarm limits and alarm actions of this example are as follows: Section 1: When the pressure value reaches 130±5Kpa, the alarm sounds and no action is taken; Section 2: When the pressure value reaches 170±5Kpa, the alarm sounds continuously and the machine is idling; Section 3: When the pressure value reaches 190±5Kpa, the alarm sounds continuously and the machine is shut down. According to the alarm limits and alarm actions set above, the performance in the example is as follows: 1. The device is inflated for 10 minutes, and the data acquisition system receives the value. When the pressure vessel reaches 130Kpa, the alarm sounds continuously and the machine is shut down. When the alarm sounds, the operator needs to press the ⑥ reset switch box button. When pressed, the ③ gas control valve (normally open) is closed and the ⑦ gas control valve (normally closed) is opened, and the gas in the ④ pressure vessel is discharged into the atmosphere to enter the pressure relief stage. At this time, the operator performs the test inspection. If the pressure relief action is not performed at this time - The alarm continues to sound, and gas continues to enter the pressure vessel, entering the second stage of protection; 2. When the inflation reaches the 15th minute, the data acquisition system shows that the pressure value reaches 170Kpa. If no one still performs the pressure relief action, the second stage of protection action will be activated. The alarm continues to sound. The test system will send The electronic control unit reduces the supply voltage value. The throttle valve adjusts its opening according to the received electrical signal. The engine is decelerated and the throttle is reduced to a safe idle state. If the pressure relief action is still not performed at this time, the gas will continue to enter the pressure vessel and enter the third stage of protection; 3. When the inflation reaches the 20th minute, the data acquisition system shows that the pressure value reaches 190Kpa. If no pressure relief action is performed, the second stage of protection action will be activated. The alarm continues to sound. The test system will send The electronic control unit cuts off the power supply and shuts down the engine in the test bench to ensure The entire engine is shut down.

[0090] In this embodiment, a monitoring and alarm device is provided in the test bench timing alarm protection system. The monitoring and alarm device is further configured to sound an alarm when the pressure vessel reaches a first preset pressure value. The monitoring and alarm device is further configured to sound an alarm when the pressure vessel reaches a second preset pressure value and send a corresponding power signal and throttle signal to the electronic control unit and throttle valve, so that the electronic control unit reduces the power supply voltage and the throttle valve controls the engine to idle safely. The monitoring and alarm device is further configured to sound an alarm when the pressure vessel reaches a third preset pressure value and send a corresponding power signal and throttle signal to the electronic control unit and throttle valve, so that the electronic control unit disconnects the power supply and the throttle valve controls the engine to shut down and cut off fuel. The monitoring and alarm device includes: a pressure transmitter, a digital-to-analog converter, a data acquisition module, and at least one buzzer, connected in sequence. The pressure transmitter is connected to the pressure vessel. The pressure transmitter is configured to receive compressed air transmitted by the pressure vessel, obtain the pressure value of the pressure vessel based on the compressed air, and send it to the digital-to-analog converter. The digital-to-analog converter is configured to receive the pressure value transmitted by the pressure vessel, perform digital-to-analog conversion on the pressure value, and transmit the converted pressure value of the pressure vessel to a data acquisition module. The data acquisition module is configured to control the buzzer to alarm based on the converted pressure value of the pressure vessel and transmit corresponding power and throttle signals to the electronic control unit and the engine according to the preset pressure level reached, so that the electronic control unit and the engine can take corresponding protective measures. Thus, by precisely calculating the gas flow rate, the rated pressure is generated within the rated time, thereby achieving the effects of a timed alarm and automatic protection of the test engine. This solves the problem of personnel failing to perform inspections on time due to the lack of warnings during the test process, and avoids safety hazards such as test bench fires caused by inadequate inspections and the lack of secondary protection during the engine test process. Furthermore, due to the phased protection measures for the engine, the test safety is greatly improved in the absence of personnel, ensuring the safety of test personnel, equipment, and property.

[0091] Further, refer to Figure 4 , Figure 4 This is the timing alarm protection method for the test bench of the present invention. Figure 5 This is a flow chart of a first embodiment of a gantry timing alarm protection method according to the present invention. The gantry timing alarm protection method is applied to a gantry timing alarm protection system. The gantry timing alarm protection system comprises: a monitoring alarm device, a switch control box, and a pressure regulating valve, a gas flow meter, a first gas control valve, a pressure vessel, and a second gas control valve connected in sequence. The monitoring alarm device and the pressure vessel, the monitoring alarm module are connected to the pressure vessel, and the switch control box is connected to the first gas control valve and the second gas control valve, respectively.

[0092] The described stand timing alarm protection method comprises:

[0093] Step S10: The pressure container receives the compressed air input through the first gas control valve, and transmits the compressed air to the monitoring alarm device through the pressure measuring pipeline.

[0094] In a specific implementation, after the pressure vessel receives compressed air input through a first gas control valve and transmits the compressed air to a monitoring and alarm device through a pressure measurement pipeline, the following further comprises: the first gas control valve receives compressed air and, when the switch control box is closed, blocks the compressed air from entering the pressure vessel, thereby inputting the compressed air into the pressure vessel; and the second gas control valve discharges the compressed air from the pressure vessel when the switch control box is opened. Before the pressure vessel receives compressed air input through the first gas control valve and transmits the compressed air to the monitoring and alarm device through a pressure measurement pipeline, the following further comprises: a pressure regulating valve receives compressed air to be processed, regulates the compressed air according to the pressure vessel's tolerable pressure, and outputs the regulated compressed air to a gas flow meter; the gas flow meter receives the regulated compressed air input through the pressure regulating valve, calculates the compressed air rate and flow value according to a preset method based on the pressure vessel volume, performs gas regulation based on the compressed air rate and flow value, obtains compressed air, and transmits the compressed air to the first gas control valve.

[0095] Step S20: The monitoring alarm device receives the compressed air transmitted by the pressure vessel, and obtains the pressure value of the pressure vessel according to the compressed air.

[0096] It should be noted that a set of air pressure sampling tubes are connected to the pressure vessel and connected to the alarm system. The gas flow rate calculation results are used to adjust the gas flow rate of the gas flow meter according to actual needs. The pressure value in the pressure vessel is controlled to increase steadily according to the inflation time. The pressure value is collected by the pressure transmitter, converted by the digital-to-analog converter, and sent to the monitoring software system for reading. The monitoring software can monitor the pressure value of the pressure vessel in real time and also has a set of alarm buzzers as alarm reminders. The software is integrated into the power signal and throttle signal of the engine test system, and can execute segmented pressure limits to send corresponding power signals and throttle signals to the test bench. The power supply of the control ECU and throttle unit is used as an alarm action, such as alarm (engine does not execute), alarm (engine enters idle speed), alarm (engine automatically shuts down), etc.

[0097] Step S30: The monitoring alarm device alarms when the pressure value of the pressure vessel exceeds a preset pressure value, and sends corresponding control signals to the electronic control unit and the throttle according to the preset pressure value level reached, so that the electronic control unit and the throttle take corresponding protection measures.

[0098] In a specific implementation, the monitoring and alarm device issues an alarm when the pressure vessel reaches a first preset pressure value; issues an alarm when the pressure vessel reaches a second preset pressure value and sends a corresponding power signal and throttle signal to the electronic control unit and throttle, so that the electronic control unit reduces the power supply voltage and the throttle controls the engine to idle safely; and issues an alarm when the pressure vessel reaches a third preset pressure value and sends a corresponding power signal and throttle signal to the electronic control unit and throttle, so that the electronic control unit disconnects the power supply and the throttle controls the engine to shut down and cut off fuel. A pressure transmitter receives compressed air transmitted by the pressure vessel, obtains a pressure value of the pressure vessel based on the compressed air, and sends it to a digital-to-analog converter; the digital-to-analog converter receives the pressure value transmitted by the pressure vessel, performs digital-to-analog conversion on the pressure value, and sends the converted pressure value to a data acquisition module; the data acquisition module controls the buzzer to sound an alarm based on the converted pressure value of the pressure vessel and sends a corresponding power signal and throttle signal to the electronic control unit and engine based on the preset pressure value level reached, so that the electronic control unit and engine take corresponding protective measures.

[0099] In this embodiment, the pressure vessel receives compressed air input through the first gas control valve, and transmits the compressed air to the monitoring and alarm device through the pressure measuring pipeline; the monitoring and alarm device receives the compressed air transmitted by the pressure vessel, and obtains the pressure value of the pressure vessel based on the compressed air; the monitoring and alarm device alarms when the pressure value of the pressure vessel exceeds a preset pressure value, and sends a corresponding control signal to the electronic control unit and the throttle according to the preset pressure value level reached, so that the electronic control unit and the throttle take corresponding protective measures. In this way, the timing alarm device is integrated into the test bench, and protective actions and alarm reminders are generated for the engine at regular intervals.

[0100] Reference Figure 5 , Figure 5 This is a flow chart of the second embodiment of the rack timing alarm protection method of the present invention, based on the above Figure 4 The embodiment shown provides a second embodiment of the rack timing alarm protection method of the present invention.

[0101] In this embodiment, step S30 includes:

[0102] Step S301: The monitoring alarm device issues an alarm when the pressure vessel reaches a first preset pressure value.

[0103] It should be noted that when the pressure vessel reaches the first preset pressure value, the device is inflated for 10 minutes, and the data acquisition system receives the value. When the pressure vessel reaches 130Kpa, When the alarm sounds, the operator needs to press the ⑥ reset switch box button. When pressed, the ③ gas control valve (normally open) is closed and the ⑦ gas control valve (normally closed) is opened, and the gas in the ④ pressure vessel is discharged into the atmosphere to enter the pressure relief stage. At this time, the operator performs the test inspection. If the pressure relief action is not performed at this time - The alarm continues to sound, and gas continues to enter the pressure vessel, entering the second stage of protection;

[0104] Step S302: When the pressure vessel reaches a second preset pressure value, the monitoring alarm device issues an alarm and sends a corresponding power signal and throttle signal to the electronic control unit and the throttle, so that the electronic control unit controls the engine to idle safely with low power supply voltage and throttle.

[0105] It should be noted that when the inflation reaches the 15th minute, the data acquisition system shows that the pressure value reaches 170Kpa. If no one is performing the pressure relief action, the second stage protection action will be activated at this time. The alarm continues to sound. The test system will send The electronic control unit reduces the supply voltage value. The throttle valve adjusts its opening according to the received electrical signal. The engine is slowed down and the throttle is reduced to reach a safe idle state. If the pressure relief action is still not performed at this time, the gas will continue to enter the pressure vessel and enter the third stage of protection;

[0106] Step S303: When the pressure vessel reaches a third preset pressure value, the monitoring alarm device issues an alarm and sends a corresponding power signal and throttle signal to the electronic control unit and the throttle valve, so that the electronic control unit cuts off the power supply and the throttle valve to control the engine to stop and cut off the fuel.

[0107] It should be noted that when the inflation reaches the 20th minute, the data acquisition system shows that the pressure value reaches 190Kpa. If no one is performing the pressure relief action, the second stage protection action will be activated at this time. The alarm continues to sound. The test system will send The electronic control unit cuts off the power supply and shuts down the engine in the test bench to ensure The entire engine is shut down.

[0108] In this embodiment, the pressure vessel receives compressed air input through the first gas control valve, and transmits the compressed air to the monitoring and alarm device through the pressure measuring pipeline; the monitoring and alarm device receives the compressed air transmitted by the pressure vessel, and obtains the pressure value of the pressure vessel based on the compressed air; the monitoring and alarm device alarms when the pressure vessel reaches a first preset pressure value; the monitoring and alarm device alarms when the pressure vessel reaches a second preset pressure value and sends a corresponding power supply signal and throttle signal to the electronic control unit and the throttle, so that the electronic control unit has a low power supply voltage and the throttle controls the safe idling of the engine; the monitoring and alarm device alarms when the pressure vessel reaches a third preset pressure value The system will give an alarm and send the corresponding power signal and throttle signal to the electronic control unit and throttle valve, so that the electronic control unit will disconnect the power supply and throttle valve to control the engine to stop and cut off the oil. Through precise calculation of the gas flow, the rated air pressure can be generated within the rated time, thereby achieving the effect of timing alarm and automatic protection of the test engine, solving the problem of personnel failing to perform inspections on time due to no warning reminders during the test, and avoiding unsafe hidden dangers such as bench fires caused by inadequate inspections and lack of secondary protection during the engine test process. At the same time, due to the phased protection measures for the engine, the test safety is greatly improved in the absence of anyone, ensuring the safety of test personnel, equipment and property.

[0109] In addition, it should be noted that, in this document, the terms "comprises," "includes," or any other variations thereof are intended to encompass non-exclusive inclusion, such that a process, method, article, or system comprising a series of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or system. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or system comprising the element.

[0110] The serial numbers of the above embodiments of the present invention are for description only and do not represent the advantages or disadvantages of the embodiments.

[0111] Through the description of the above embodiments, those skilled in the art can clearly understand that the above-mentioned embodiment methods can be implemented by means of software plus the necessary general hardware platform, or of course by hardware, but in many cases the former is a better embodiment. Based on this understanding, the technical solution of the present invention, or the part that contributes to the prior art, can be embodied in the form of a software product. The computer software product is stored in a storage medium (such as a read-only memory (ROM) / RAM, a magnetic disk, or an optical disk), and includes a number of instructions for enabling a terminal device (which can be a mobile phone, a computer, a server, or a network device, etc.) to execute the methods described in each embodiment of the present invention.

[0112] The above are only preferred embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention description and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A gantry timing alarm protection system, characterized in that: The gantry timing alarm protection system includes: a monitoring alarm device and a pressure vessel, wherein the monitoring alarm device is connected to the pressure vessel; The pressure vessel is used to receive the compressed air input through the first gas control valve and transmit the compressed air to the monitoring alarm device through the pressure measuring pipeline; The monitoring and alarm device is used to receive the compressed air transmitted by the pressure vessel and obtain the pressure value of the pressure vessel based on the compressed air; The monitoring and alarm device is further configured to sound an alarm when the pressure value of the pressure vessel exceeds a preset pressure value, and send corresponding control signals to the electronic control unit and the throttle valve according to the preset pressure value level reached, so that the electronic control unit and the throttle valve take corresponding protective measures; The monitoring alarm device is further configured to alarm when the pressure vessel reaches a first preset pressure value; The monitoring and alarm device is further configured to alarm and send corresponding power supply signals and throttle signals to the electronic control unit and the throttle valve when the pressure vessel reaches a second preset pressure value, so that the electronic control unit can reduce the power supply voltage and the throttle valve to control the engine to idle safely; The monitoring alarm device is also used to alarm and send corresponding power signals and throttle signals to the electronic control unit and throttle when the pressure vessel reaches a third preset pressure value, so that the electronic control unit disconnects the power supply and throttle to control the engine to stop and cut off the oil.

2. The gantry timing alarm protection system according to claim 1, characterized in that: The monitoring alarm device comprises: a pressure transmitter, a digital-to-analog converter, a data acquisition module and at least one buzzer connected in sequence, wherein the pressure transmitter is connected to the pressure vessel; The pressure transmitter is used to receive compressed air transmitted by the pressure vessel, obtain the pressure value of the pressure vessel according to the compressed air, and send the pressure value to the digital-to-analog converter; The digital-to-analog converter is used to receive the pressure value sent by the pressure transmitter, perform digital-to-analog conversion on the pressure value, and send the pressure value of the pressure vessel after the digital-to-analog conversion to the data acquisition module; The data acquisition module is used to control the buzzer to alarm according to the pressure value of the pressure vessel after the digital-to-analog conversion and send corresponding power signals and throttle signals to the electronic control unit and throttle according to the preset pressure value level reached, so that the electronic control unit and throttle take corresponding protective measures.

3. The gantry timing alarm protection system according to claim 1, characterized in that: The gantry timing alarm protection system includes: a switch control box, a first gas control valve and a second gas control valve, wherein the first gas control valve and the second gas control valve are respectively connected to the gas inlet and the gas outlet of the pressure vessel, and the switch control box is respectively connected to the first gas control valve and the second gas control valve; The first gas control valve is used to receive compressed air and input the compressed air into the pressure vessel when the switch control box is closed; The second gas control valve is used to discharge the compressed air in the pressure container when the switch control box is controlled to open.

4. The gantry timing alarm protection system according to claim 1, characterized in that: The gantry timing alarm protection system further includes: a pressure regulating valve and a gas flow meter, wherein the gas flow meter is connected to the first gas control valve, and the pressure regulating valve is connected to the gas flow meter; The pressure regulating valve is used to receive the compressed air to be processed, regulate the compressed air according to the pressure that the pressure vessel can withstand, and output the regulated compressed air to the gas flow meter; The pressure regulating valve is further used to automatically close the output port and stop transmitting compressed air when the pressure of the pressure vessel reaches a preset limit; A gas flow meter is used to receive the regulated compressed air input through the pressure regulating valve, and calculate the compressed air rate and flow value in a preset manner according to the volume of the pressure vessel, perform gas regulation according to the compressed air rate and the flow value to obtain compressed air, and transmit the compressed air to the first gas control valve.

5. A gantry timing alarm protection method, the gantry timing alarm protection method being applied to the gantry timing alarm protection system according to any one of claims 1 to 4, characterized in that: The gantry timing alarm protection method comprises: The pressure vessel receives the compressed air input through the first gas control valve and transmits the compressed air to the monitoring and alarm device through the pressure measuring pipeline; The monitoring and alarm device receives the compressed air transmitted by the pressure vessel and obtains the pressure value of the pressure vessel according to the compressed air; The monitoring and alarm device alarms when the pressure value of the pressure vessel exceeds a preset pressure value, and sends a corresponding control signal to the electronic control unit and the throttle valve according to the preset pressure value level reached, so that the electronic control unit and the throttle valve take corresponding protective measures; The monitoring alarm device is further configured to alarm when the pressure vessel reaches a first preset pressure value; The monitoring and alarm device is further configured to alarm and send corresponding power supply signals and throttle signals to the electronic control unit and the throttle valve when the pressure vessel reaches a second preset pressure value, so that the electronic control unit can reduce the power supply voltage and the throttle valve to control the engine to idle safely; The monitoring alarm device is also used to alarm and send corresponding power signals and throttle signals to the electronic control unit and throttle when the pressure vessel reaches a third preset pressure value, so that the electronic control unit disconnects the power supply and throttle to control the engine to stop and cut off the oil.

6. A method for protecting a gantry by timing alarm according to claim 5, characterized in that: The monitoring alarm device alarms when the pressure value of the pressure vessel exceeds a preset pressure value, and sends corresponding control signals to the electronic control unit and the throttle valve according to the preset pressure value level reached, so that the electronic control unit and the throttle valve take corresponding protective measures, including: The pressure transmitter receives the compressed air transmitted by the pressure vessel, obtains the pressure value of the pressure vessel according to the compressed air, and sends the pressure value to the digital-to-analog converter; The digital-to-analog converter receives the pressure value sent by the pressure transmitter, performs digital-to-analog conversion on the pressure value, and sends the pressure value of the pressure vessel after the digital-to-analog conversion to the data acquisition module; The data acquisition module controls the buzzer to alarm according to the pressure value of the pressure vessel after the digital-to-analog conversion and sends the corresponding power signal and throttle signal to the electronic control unit and the throttle according to the preset pressure value level reached, so that the electronic control unit and the throttle take corresponding protection measures.

7. A method for protecting a gantry by timing alarm according to claim 5, characterized in that: After the pressure vessel receives the compressed air inputted through the first gas control valve and transmits the compressed air to the monitoring and alarm device through the pressure measuring pipeline, the pressure vessel further includes: The first gas control valve is connected to the compressed air, and when the control of the switch control box is closed, the compressed air is input into the pressure vessel; The second gas control valve discharges the compressed air in the pressure container when the switch control box is controlled to open.

8. A method for protecting a gantry by timing alarm according to claim 5, characterized in that: The pressure vessel receives compressed air input through the first gas control valve and transmits the compressed air to the monitoring and alarm device through the pressure measuring pipeline, and further includes: The pressure regulating valve receives the compressed air to be processed, regulates the compressed air according to the pressure that the pressure vessel can withstand, and outputs the regulated compressed air to the gas flow meter; The gas flow meter receives the regulated compressed air input through the pressure regulating valve, and calculates the compressed air rate and flow value in a preset manner according to the volume of the pressure vessel, performs gas regulation according to the compressed air rate and the flow value, obtains compressed air, and transmits the compressed air to the first gas control valve.

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