Mobile fire truck hydraulic performance detection system and method

Abstract

The present invention provides a mobile fire truck hydraulic performance detection system and method, including a mobile cabinet, wherein the mobile cabinet includes a 485 signal acquisition module, an industrial computer, a telescopic pressure measuring hose, at least one pressure gauge and an alarm light; the 485 signal acquisition module includes a measuring sensor and a mobile data processing terminal; the industrial computer includes a fault diagnosis terminal and a touch display screen; the measuring sensor converts the collected data into a 485 protocol signal and transmits it to the mobile data processing terminal; the mobile data processing terminal records and analyzes the 485 protocol signal according to set requirements, and transmits the result to the fault diagnosis terminal; the fault diagnosis terminal forms a data list with time data and temperature data, processes the data using the least squares method, and displays the obtained linear equation on the touch display screen; the alarm light is used to detect whether the result meets the set standard.

Description

Technical Field

[0001] The invention relates to a fire truck hydraulic performance and temperature rise detection system and method. Background Art

[0002] The hydraulic performance test of fire trucks is an important item in fire truck vehicle inspection and is of great significance to ensuring the fire extinguishing efficiency of fire trucks.

[0003] Traditional fire truck hydraulic performance testing relies primarily on on-site sampling at testing stations and manual laboratory analysis. While comprehensive laboratory analysis methods are available, laboratory testing suffers from limitations such as large instrument and equipment space requirements, significant sampling errors, fragmented monitoring data, and an inability to predict vehicle conditions in a timely manner. These limitations make it difficult to meet the increasing demands of manufacturers and fire departments for fire truck testing.

[0004] At present, various parts of my country have also established a number of fire truck hydraulic performance testing benches in accordance with the needs of testing management, but they only focus on the hydraulic performance testing of fire trucks. The facilities and venues are too large and the investment cost is too high, making it impossible to conduct real-time testing of the vehicle's operating status, especially the temperature rise of the engine system. Summary of the Invention

[0005] The purpose of the present invention is to provide a mobile fire truck hydraulic performance detection system and method to address the technical problems in the prior art, such as large site requirements, large sampling errors, scattered monitoring data, inability to timely predict vehicle conditions, and inability to perform real-time detection of vehicle operating conditions, especially the temperature rise of the engine system.

[0006] The technical solution of the present invention is:

[0007] A mobile fire truck hydraulic performance testing system includes a mobile cabinet. The special feature is that the mobile cabinet includes a 485 signal acquisition module, an industrial computer, a telescopic pressure measuring hose, at least one pressure gauge and an alarm light;

[0008] The 485 signal acquisition module includes a measurement sensor and a mobile data processing terminal;

[0009] The industrial computer includes a fault diagnosis terminal and a touch screen display;

[0010] The measurement sensor includes a flow acquisition module, a pressure acquisition module, a temperature acquisition module and a vehicle information acquisition module;

[0011] The measurement sensor converts the collected data into 485 protocol signals and transmits them to the mobile data processing terminal;

[0012] The mobile data processing terminal records and analyzes the 485 protocol signal according to the set requirements and transmits the result to the fault diagnosis terminal;

[0013] The fault diagnosis terminal forms a data list with the time data and temperature data in the 485 protocol signal, processes the data using the least squares method, analyzes the data using a statistical analysis program, obtains a linear equation, and displays the test results on a touch screen;

[0014] The alarm light is used to indicate whether the test result meets the set standard;

[0015] The pressure acquisition module includes a telescopic pressure measuring hose and a pressure gauge.

[0016] Furthermore, the flow acquisition module is arranged on the outlet pipe of the fire truck water pump, for collecting the water pump flow of the fire truck; the telescopic pressure measuring hose in the pressure acquisition module is arranged at the pressure measuring point positions of the inlet and outlet of the fire truck water pump, for collecting the inlet pressure and outlet pressure of the fire truck water pump; the temperature acquisition module is arranged on the transfer case housing and gear box housing of the fire truck, for collecting the temperature rise status of different positions of the transfer case and gear box of the fire truck; the speed acquisition module is arranged on the universal joint coupling of the fire truck, for collecting the output speed of the fire truck; the vehicle information acquisition module is arranged on the ECU interface of the fire truck, for collecting the engine parameters of the fire truck.

[0017] Furthermore, the flow acquisition module is an ultrasonic sensor; the pressure acquisition module includes an outlet pressure sensor and an inlet pressure sensor; the temperature acquisition module includes a gearbox temperature sensor and a transfer case temperature sensor; the speed acquisition module is a photoelectric speed sensor; and the vehicle information acquisition module is a CAN bus communication module.

[0018] Furthermore, four moving wheels are installed on the bottom of the mobile cabinet.

[0019] At the same time, the present invention also provides a detection method for the above-mentioned mobile fire truck hydraulic performance detection system, comprising the following steps:

[0020] 1) Data Collection

[0021] Connect the 485 signal acquisition module interface on the mobile cabinet to the fire truck to be tested; wherein, the flow acquisition module is set at the outlet pipe of the fire truck water pump; the telescopic pressure measuring hose in the pressure acquisition module is connected to the pressure measurement points at the inlet and outlet of the fire truck water pump; the temperature acquisition module interface is connected to the transfer case housing and gear box housing of the fire truck; the speed acquisition module interface is connected to the universal joint coupling of the fire truck; the vehicle information acquisition module interface is connected to the fire truck ECU interface;

[0022] Connect the water source to the test pool, start the fire truck engine, and operate the fire pump at the maximum head;

[0023] The flow acquisition module collects the water pump flow of the fire truck; the pressure acquisition module collects the water pump pressure of the fire truck; the temperature acquisition module collects the temperature rise status of different positions of the transfer case and gearbox of the fire truck; the vehicle information acquisition module collects the engine parameters of the fire truck; the speed acquisition module collects the output speed of the fire truck;

[0024] 2) Data processing

[0025] Except for the fire truck water pump pressure data, the data collected by other modules are converted into 485 protocol signals and transmitted to the mobile data processing terminal; the mobile data processing terminal records and analyzes the 485 protocol signals according to the set requirements and transmits the results to the fault diagnosis terminal of the industrial computer;

[0026] 3) Data display and diagnosis

[0027] The water pump pressure data of the fire truck is displayed on the pressure gauge;

[0028] Flow data, fire truck output speed and engine parameters are displayed on the touch screen;

[0029] The fault diagnosis terminal forms a data list from the time and temperature data in the 485 protocol signal, processes the data using the least squares method, performs quadratic curve fitting based on discrete data points, and generates an Nth-order curve equation for temperature rise. The temperature for future periods is calculated based on this Nth-order curve equation and the predicted result is displayed on the touch screen.

[0030] 4) Alarm

[0031] When the calculation results indicate that the temperature in the future period will exceed the set value, the alarm light will light up.

[0032] Beneficial effects of the present invention:

[0033] 1. The present invention combines ultrasonic, piezoelectric, optical and digital communication sensing principles, and comprehensively utilizes automatic measurement, automatic control and digital communication technologies to quickly and accurately obtain fire truck hydraulic performance monitoring data to determine the hydraulic performance status and engine temperature rise trend of the fire truck.

[0034] 2. The mobile fire truck hydraulic performance detection system provided by the present invention can reduce the operating costs of fire truck hydraulic performance detection, provide a practical, convenient, fast, highly automated performance detection method and fault safety warning and emergency technology, which is of great significance to improving the level of intelligence of fire truck hydraulic performance detection.

[0035] 3. Since the temperature rise of the engine is slow, the present invention only collects the temperature rise data during the initial working period of the engine, and predicts the temperature rise data of the future period according to the prediction curve, thereby saving the detection cost and detection time.

[0036] 4. The present invention can use a matching movable test water pool to form a circulating water circuit through pipelines and fire pumps, saving water resources and facilitating mobile testing anytime and anywhere. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 This is a structural diagram of a mobile cabinet in the hydraulic performance testing system of a mobile fire truck of the present invention;

[0038] Figure 2 The figure is a schematic diagram of the connection between the hydraulic performance detection system of the mobile fire truck and the fire truck of the present invention.

[0039] Specific reference numbers of the accompanying drawings:

[0040] 1-Mobile cabinet; 2-Industrial computer; 3-Pressure gauge; 4-Telescopic pressure measuring hose; 5-485 signal acquisition module; 6-Alarm light; 7-Fire truck; 8-Engine; 9-Universal joint coupling; 10-Transfer case; 11-Fire pump; 12-CAN bus communication module; 13-Transfer case temperature sensor; 14-Photoelectric speed sensor; 15-Gear box temperature sensor; 16-Outlet pressure sensor; 17-Inlet pressure sensor; 18-Ultrasonic sensor; 19-Test water tank; 20-Water pipe. DETAILED DESCRIPTION

[0041] like Figure 1 As shown, the mobile fire truck hydraulic performance detection system includes a mobile cabinet 1, which includes an industrial computer 2, a 485 signal acquisition module 5 and an alarm light 6. Four mobile wheels are installed at the bottom of the mobile cabinet 1.

[0042] The industrial computer 2 includes a fault diagnosis terminal and a touch screen display.

[0043] The 485 signal acquisition module 5 includes measurement sensors and a mobile data processing terminal. The measurement sensors include a flow acquisition module, a pressure acquisition module, a temperature acquisition module, and a vehicle information acquisition module. The measurement sensors convert the acquired data into 485 protocol signals and transmit them to the mobile data processing terminal. The mobile data processing terminal records and analyzes the 485 protocol signals according to predefined requirements and transmits the results to the fault diagnosis terminal. The pressure acquisition module includes a telescopic pressure measuring hose 4 and at least one pressure gauge 3.

[0044] The fault diagnosis terminal forms a data list with the time data and temperature data in the 485 protocol signal, processes the data using the least squares method, analyzes the data through a statistical analysis program, obtains a linear equation, and displays the test results on a touch screen.

[0045] The warning light 6 is used to indicate whether the test result meets the set standard.

[0046] The method for predicting the hydraulic performance and temperature rise of a fire truck by the hydraulic performance detection system of the present invention comprises the following steps:

[0047] 1) Data Collection

[0048] Connect the 485 signal acquisition module 5 interface on the mobile cabinet 1 to the fire truck 7 to be tested; wherein, the flow acquisition module is set at the outlet of the fire pump 11; the telescopic pressure measuring hose 4 in the pressure acquisition module is connected to the pressure measuring point positions of the inlet and outlet of the fire pump 11; the temperature acquisition module interface is respectively connected to the shell position of the fire truck transfer case 10 and the gear box shell position; the speed acquisition module is placed at the position of the fire truck universal joint coupling 9; the vehicle information acquisition module interface is connected to the fire truck ECU.

[0049] In the test water pool 19 filled with water, the inlet and outlet of the fire pump are connected to the test water pool through water pipes to form a water circulation; then the engine 8 of the fire truck is started and the fire pump 11 is started to work at the maximum head.

[0050] Next, the flow acquisition module collects the flow of the fire truck water pump, the pressure acquisition module collects the water pump pressure of the fire truck 7, the temperature acquisition module collects the temperature information of different positions of the transfer case 10 and the gear box of the fire truck, the vehicle information acquisition module collects the engine 8 parameters of the fire truck, and the speed acquisition module collects the speed of the universal joint coupling of the fire truck 7.

[0051] 2) Data processing

[0052] Except for the fire truck water pump pressure data which is directly sent to pressure gauge 3, the data collected by the other modules are converted into 485 protocol signals and transmitted to the mobile data processing terminal; the mobile data processing terminal records and analyzes the 485 protocol signals according to the detection requirements and transmits the results to the fault diagnosis terminal of industrial computer 2.

[0053] 3) Data display and diagnosis

[0054] The fire truck's water pump pressure data is displayed on the pressure gauge 3. Flow data, the fire truck's output speed, and engine parameters 8 are displayed on the touchscreen display. The fault diagnosis terminal forms a data table from the time and temperature data in the 485 protocol signal and processes this data using the least squares method. A quadratic curve fit is performed based on the discrete data points, generating an Nth-order curve equation for temperature rise. This Nth-order curve equation is then used to calculate the temperature for future time periods and display the predicted temperature results on the touchscreen display.

[0055] 4) Alarm

[0056] When the calculation result indicates that the temperature in the future period will exceed the set value, the alarm light 6 will emit a light alarm.

Claims

1. A mobile fire truck hydraulic performance detection system, comprising a mobile cabinet (1), characterized in that: The mobile cabinet (1) includes a 485 signal acquisition module (5), an industrial computer (2) and an alarm light (6); The 485 signal acquisition module (5) includes a measurement sensor and a mobile data processing terminal; The industrial computer (2) includes a fault diagnosis terminal and a touch display screen; The measuring sensor includes a flow acquisition module, a pressure acquisition module, a temperature acquisition module, a vehicle information acquisition module and a speed acquisition module; The measurement sensor converts the collected data into 485 protocol signals and transmits them to the mobile data processing terminal; The mobile data processing terminal records and analyzes the 485 protocol signal according to the set requirements and transmits the result to the fault diagnosis terminal; The fault diagnosis terminal forms a data list with the time data and temperature data in the 485 protocol signal, processes the data using the least squares method, performs quadratic equation curve fitting based on discrete data points, and generates an Nth-order curve equation for temperature rise. The temperature in the future period is calculated based on the Nth-order curve equation, and the temperature prediction result is displayed on the touch screen; The alarm light (6) is used to indicate whether the test result meets the set standard; The pressure acquisition module comprises a telescopic pressure measuring hose (4) and at least one pressure gauge (3).

2. The mobile fire truck hydraulic performance detection system according to claim 1, characterized in that: The flow acquisition module is arranged on the outlet pipe of the fire truck water pump and is used to acquire the water pump flow of the fire truck; the telescopic pressure measuring hose (4) in the pressure acquisition module is arranged at the pressure measuring point positions of the inlet and outlet of the fire truck water pump and is used to acquire the inlet pressure and outlet pressure of the fire truck water pump; the temperature acquisition module is arranged on the transfer case housing and the gear case housing of the fire truck and is used to acquire the temperature rise status of the transfer case (10) and the gear case at different positions of the fire truck; the speed acquisition module is arranged on the universal joint coupling (9) of the fire truck and is used to acquire the output speed of the fire truck; the vehicle information acquisition module is arranged on the ECU interface of the fire truck and is used to acquire the engine parameters of the fire truck.

3. The mobile fire truck hydraulic performance detection system according to claim 1 or 2, characterized in that: The flow acquisition module is an ultrasonic sensor (18); the pressure acquisition module includes an outlet pressure sensor (16) and an inlet pressure sensor (17); the temperature acquisition module includes a gearbox temperature sensor (15) and a transfer case temperature sensor (13); the speed acquisition module is a photoelectric speed sensor (14); and the vehicle information acquisition module is a CAN bus communication module (12).

4. The mobile fire truck hydraulic performance detection system according to claim 3, characterized in that: Four moving wheels are installed on the bottom of the mobile cabinet (1).

5. The mobile fire truck hydraulic performance detection system according to claim 4, characterized in that: Also included is a removable test water tank (19).

6. The method of the mobile fire truck hydraulic performance detection system according to any one of claims 1 to 5, characterized in that: The following steps are involved: 1) Data Collection The 485 signal acquisition module (5) interface on the mobile cabinet (1) is connected to the fire truck (7) to be detected; wherein the flow acquisition module is arranged at the outlet pipe of the fire truck water pump; the telescopic pressure measuring hose (4) in the pressure acquisition module is connected to the pressure measuring points at the inlet and outlet of the fire truck water pump; the temperature acquisition module interface is connected to the shell position of the fire truck transfer case (10) and the gear box shell position; the speed acquisition module interface is connected to the universal joint coupling (9) of the fire truck; and the vehicle information acquisition module interface is connected to the fire truck ECU interface; In a test water pool (19) filled with water, the inlet and outlet of the fire pump (11) are connected to the test water pool (19) through water pipes (20) to form a water circulation; then the engine 8 of the fire truck is started to start the fire pump (11) to work at maximum head; The flow acquisition module acquires the water pump flow of the fire truck (7); the pressure acquisition module acquires the water pump pressure of the fire truck (7); the temperature acquisition module acquires temperature information at different positions of the transfer case (10) and the gear box of the fire truck (7); the vehicle information acquisition module acquires engine (8) parameters of the fire truck (7); and the speed acquisition module acquires the speed of the universal joint coupling of the fire truck (7); 2) Data processing Except for the fire truck water pump pressure data which is directly sent to the pressure gauge (3), the data collected by the other modules are converted into 485 protocol signals and transmitted to the mobile data processing terminal; the mobile data processing terminal records and analyzes the 485 protocol signals according to the set requirements, and transmits the results to the fault diagnosis terminal of the industrial computer (2); 3) Data display and diagnosis The water pump pressure data of the fire truck is displayed on the pressure gauge (3); Flow data, fire truck output speed and engine (8) parameters are displayed on the touch screen; The fault diagnosis terminal forms a data list from the time data and temperature data in the 485 protocol signal, processes the data using the least squares method, performs quadratic equation curve fitting based on discrete data points, and generates an Nth-order curve equation for temperature rise. The temperature for future time periods is calculated based on the Nth-order curve equation and the calculation results are displayed on the touch screen.

7. The method of the mobile fire truck hydraulic performance detection system according to claim 6, characterized in that: Also includes the alarm step: When the calculation result indicates that the temperature in the future period will exceed the set value, the alarm light (6) will light an alarm.

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