Driving noise measuring system for agricultural machinery

Abstract

The utility model discloses a driving noise measuring system for agricultural machinery, particularly relates to the technical field of mechanical noise measurement, and aims to solve the problems of excessive manpower consumption, complexity and the like of testing the agricultural machinery in the prior art, which comprises a testing runway, support rods arranged on two sides of the testing runway, sound level meters arranged on the support rods, and a sound sensor arranged on the sound level meters. The sound level meter is connected with a radio transmission module, and the radio transmission module is in electric signal connection with the industrial personal computer; portal frames are arranged on the two opposite sides of the supporting rod, photoelectric switches and an electrical cabinet are arranged on the side portions of the portal frames, a data acquisition card is arranged in the electrical cabinet, the data acquisition card is connected with the photoelectric switches and an industrial personal computer, and the data acquisition card can transmit monitoring signals of the photoelectric switches to the industrial personal computer. And the industrial personal computer performs start-stop control on the sound level meter according to a monitoring signal of the photoelectric switch. According to the utility model, the measurement precision can be improved, the working intensity of operators is reduced, and the operation process is automatic, intelligent and informationized.

Description

Technical Field

[0001] The utility model relates to a running noise measuring system for agricultural machinery, belonging to the technical field of machinery noise measurement. Background Art

[0002] Nowadays, with the rapid development of modern agriculture in my country, agricultural machinery has been widely used in agricultural production, greatly improving the working efficiency. With the increasing types of agricultural tractors and the continuous increase in the number of tractors, agricultural practitioners enjoy the great convenience brought by tractors. However, the noise generated during the operation of agricultural machinery poses a huge hidden danger to the health of practitioners. If they are exposed to excessive noise for a long time, it will greatly increase the burden on the body's auditory system and cause irreparable physical damage.

[0003] The document "Agricultural Machinery Equipment Development Action Plan 2016-2025" jointly issued by the Ministry of Industry and Information Technology, the Ministry of Agriculture, and the National Development and Reform Commission pointed out that it is necessary to further coordinate and integrate the testing resources of scientific research institutions, universities, and enterprises, gradually develop regional comprehensive agricultural machinery inspection, testing and certification agencies, establish and improve the reliability environmental testing system of agricultural machinery equipment, and improve the effectiveness and convenience of testing.

[0004] Therefore, it is necessary to conduct standardized and reliable driving noise measurement for various types of agricultural machinery widely used in agricultural production. Traditional noise measurement is extremely dependent on manual work, requiring operators to hold equipment and read data within a period of time with their naked eyes, resulting in low measurement accuracy, high measurement intensity, and low levels of measurement automation, intelligence, and informationization. Utility Model Content

[0005] The purpose of the utility model is to overcome the deficiencies in the prior art, provide a driving noise measurement system for agricultural machinery, improve measurement accuracy, reduce the workload of operators, and make the operation process automated, intelligent, and information-based.

[0006] In order to achieve the above purpose, the utility model is implemented by adopting the following technical solutions:

[0007] On the one hand, the utility model provides a system for measuring the driving noise of agricultural machinery, including a test track, support rods are arranged on both sides of the test track, a sound level meter for testing the driving noise volume of agricultural machinery is arranged on the support rods, the sound level meter is connected to a radio transmission module, and the radio transmission module is connected to an industrial control electromechanical signal;

[0008] Gantry frames are provided on both sides of the supporting rods facing each other. Photoelectric switches and electrical cabinets are provided on the sides of the gantry. The photoelectric switches are used to monitor the moment when the agricultural machinery passes through the corresponding gantry. A data acquisition card is provided in the electrical cabinet. The data acquisition card is connected with the photoelectric switch and an industrial computer. The data acquisition card can transmit the monitoring signal of the photoelectric switch to the industrial computer. The industrial computer starts and stops the sound level meter according to the monitoring signal of the photoelectric switch.

[0009] Optionally, an LED screen is provided on the top of the gantry, and the LED screen is used to display the operating instructions of the agricultural machinery and the noise volume. The LED screen is equipped with a control card, and the control card is connected to the electrical signal of an industrial computer. The industrial computer can control the LED screen according to the monitoring signal of the photoelectric switch.

[0010] Optionally, the length of the test track is 80 m, and the distance between the gantry and the support rod is 10 m.

[0011] Optionally, the photoelectric switch is arranged 1.6 m away from the bottom of the gantry, is powered by a 24 V DC power supply, and is connected to the electrical signal of the data acquisition card via the RS485 protocol.

[0012] Optionally, the number of the radio transmission modules is 2, one of the radio transmission modules is connected to the sound level meter via a cable, the other radio transmission module is connected to the industrial computer via a cable, and the two radio transmission modules are connected by electrical signals.

[0013] Optionally, the industrial computer is equipped with a host computer module, and the host computer module is used to set a communication interface and display real-time test data and measurement results.

[0014] Optionally, the host computer module includes a setting unit, a real-time display unit and a result display unit. The setting unit is used to set the serial port of the radio transmission module to ensure normal communication, the real-time display unit is used to display the test data of the sound level meter in real time, and the result display unit is used to process the test data and display the processed test data as measurement results.

[0015] On the other hand, the utility model provides a method for measuring the running noise of agricultural machinery, which is implemented by using any of the above-mentioned systems for measuring the running noise of agricultural machinery, and comprises:

[0016] Set the serial port of the radio transmission module through the industrial computer to ensure normal system communication, and display the measurement start operation prompt on the LED screen;

[0017] Agricultural machinery enters from one side of the test track;

[0018] When the agricultural machinery passes the first gantry, the photoelectric switch on the first gantry is triggered, and the photoelectric switch transmits the monitoring signal to the industrial computer. The industrial computer starts the sound level meter to perform noise testing according to the monitoring signal of the photoelectric switch;

[0019] When the agricultural machinery passes the second gantry, the photoelectric switch on the second gantry is triggered, and the photoelectric switch transmits the monitoring signal to the industrial computer. The industrial computer turns off the sound level meter according to the monitoring signal of the photoelectric switch to stop the noise test and obtain the noise test data segment;

[0020] All data points in the noise test data segment are sorted from high to low by an industrial computer, and the maximum value is taken as the test result of agricultural machinery driving noise, and it is displayed on the industrial computer.

[0021] Furthermore, when the sound level meter is performing noise testing, the sound level meter transmits real-time noise test data to the industrial computer through the radio transmission module, and the industrial computer can display the received real-time noise test data on the LED screen.

[0022] Furthermore, the industrial computer turns off the sound level meter according to the monitoring signal of the photoelectric switch to stop the noise test and displays a measurement end prompt on the LED screen.

[0023] Compared with the prior art, the utility model has the following beneficial effects:

[0024] The utility model realizes real-time control and real-time data transmission between an industrial computer, a photoelectric switch and a sound level meter, so as to facilitate the acquisition of noise volume data segments during the driving of agricultural machinery, and obtains the final noise test results after processing the noise volume data segments by the industrial computer. The test is convenient and fast, and a large amount of manpower and time do not need to be invested. In addition, the measurement accuracy of the driving noise measurement of agricultural machinery is improved to a certain extent, the whole operation process is simplified, and the automation and intelligence of the measurement system are improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a structural schematic diagram of a running noise measurement system for agricultural machinery in one embodiment of the utility model;

[0026] Figure 2 This is a schematic diagram of the signal transmission structure of a driving noise measurement system for agricultural machinery in one embodiment of the utility model;

[0027] Figure 3 A schematic diagram of a flow chart of a method for measuring running noise of agricultural machinery in one embodiment of the utility model;

[0028] In the figure: 1 agricultural machinery, 2 test track, 3 gantry, 4 LED screen, 41 control card, 5 support rod, 6 sound level meter, 7 radio transmission module, 8 electrical cabinet, 9 photoelectric switch, 10 industrial computer, 11 DC power supply, 12 data acquisition card. DETAILED DESCRIPTION

[0029] The utility model is further described below in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the utility model, and cannot be used to limit the protection scope of the utility model.

[0030] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0031] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances. Example

[0032] like Figure 1 and Figure 2 As shown, the driving noise measurement system of agricultural machinery provided by the embodiment of the present invention includes a test track 2, support rods 5 are arranged on both sides of the test track 2, and sound level meters 6 are arranged through the support rods 5. The sound level meter 6 can test the driving noise volume of the agricultural machinery 1.

[0033] The sound level meter 6 is battery-powered and is electrically connected to the industrial computer 10 via a radio transmission module 7. Specifically, the number of radio transmission modules 7 is 2, one of which is connected to the sound level meter 6 via an RS232 data protocol and a cable, and the other is connected to the industrial computer 10 via an RS232 data protocol and a cable. Wireless transmission can be achieved between the two radio transmission modules 7, thereby transmitting the test data of the sound level meter 6 to the industrial computer 10 in real time.

[0034] Gantry 3 is provided on both sides of the support rod 5. In this embodiment, gantry 3 is 10m away from support rod 5. Photoelectric switch 9 and electrical cabinet 8 are provided on the side of gantry 3. Photoelectric switch 9 is provided at 1.6m away from the bottom of gantry 3, and is used to monitor the moment when agricultural machinery passes through corresponding gantry 3. Data acquisition card 12 is provided in electrical cabinet 8. Photoelectric switch 9 is powered by 24v DC power supply 11. Signal is collected by data acquisition card 12 through RS485 protocol. Data acquisition card 12 is connected to industrial computer 10 through USB cable.

[0035] In some embodiments, an LED screen 4 for displaying the operation instructions of agricultural machinery and its noise volume is provided on the top of the gantry 3. The LED screen 4 is powered by 220V AC and is equipped with a control card 41. The control card 41 establishes a communication connection with the industrial computer 10 through a network cable. The industrial computer 10 can start and stop the sound level meter 6 and control the display of the LED screen 4 according to the monitoring signal of the photoelectric switch 9.

[0036] The industrial computer 10 is equipped with a host computer module, which is used to set the communication interface, display real-time test data and measurement results, and can also save the test data and other subsequent operations. The host computer module includes a setting unit, a real-time display unit and a result display unit. The setting unit is used to set the serial port of the radio transmission module 7 to ensure normal communication, the real-time display unit is used to display the test data of the sound level meter 6 in real time, and the result display unit is used to process the test data and display the processed test data as the measurement result. Example

[0037] like Figure 3 As shown, this embodiment provides a method for measuring the running noise of agricultural machinery, which is implemented by measuring the running noise of the agricultural machinery described in Example 1, and includes:

[0038] The serial port of the radio transmission module 7 is set through the setting unit of the industrial computer 10 to ensure normal system communication, and the measurement start operation prompt "Start measurement" is displayed on the LED screen 4.

[0039] The operator drives the agricultural machine 1 into the test track 2 from one side according to the measurement start operation prompt on the LED screen 4 .

[0040] When the agricultural machinery 1 passes through the first gantry 3 , the photoelectric switch on the first gantry 3 is triggered, and the photoelectric switch 9 transmits the monitoring signal to the industrial computer 10 . The industrial computer 10 starts the sound level meter 6 to perform noise testing according to the monitoring signal of the photoelectric switch 9 .

[0041] When the sound level meter 6 is conducting a noise test, the sound level meter 6 transmits the real-time noise test data to the industrial computer 10 via the radio transmission module 7. The industrial computer 10 can display the received real-time noise test data on the real-time display unit and the LED screen 4, "Driving noise measurement starts: xxdB".

[0042] When the agricultural machinery 1 passes through the second gantry 3, the photoelectric switch 9 on the second gantry 3 is triggered, and the photoelectric switch 9 transmits the monitoring signal to the industrial computer 10. The industrial computer 10 turns off the sound level meter 6 according to the monitoring signal of the photoelectric switch 9 to stop the noise test and obtain the noise test data segment.

[0043] The industrial computer turns off the sound level meter 6 according to the monitoring signal of the photoelectric switch 9 to stop the noise test and displays the measurement end prompt on the LED screen 4, "Measurement End".

[0044] The result display unit of the industrial computer 10 sorts all the data points in the noise test data segment from high to low, takes the maximum value as the test result of the driving noise of the agricultural machinery 1, and displays it in the result display unit of the industrial computer 10.

[0045] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A system for measuring the running noise of agricultural machinery, characterized in that: It includes a test track, support rods are arranged on both sides of the test track, sound level meters for testing the volume of noise of agricultural machinery driving are arranged on the support rods, the sound level meters are connected to a radio transmission module, and the radio transmission module is connected to the industrial control electromechanical signal; Gantry frames are provided on both sides of the supporting rods facing each other. Photoelectric switches and electrical cabinets are provided on the sides of the gantry. The photoelectric switches are used to monitor the moment when the agricultural machinery passes through the corresponding gantry. A data acquisition card is provided in the electrical cabinet. The data acquisition card is connected with the photoelectric switch and an industrial computer. The data acquisition card can transmit the monitoring signal of the photoelectric switch to the industrial computer. The industrial computer starts and stops the sound level meter according to the monitoring signal of the photoelectric switch.

2. The driving noise measurement system of agricultural machinery according to claim 1, characterized in that: An LED screen is provided on the top of the gantry, and the LED screen is used to display the operation instructions of the agricultural machinery and the noise volume. The LED screen is equipped with a control card, and the control card is connected to the electrical signal of the industrial control machine. The industrial control machine can control the LED screen according to the monitoring signal of the photoelectric switch.

3. The agricultural machinery running noise measurement system according to claim 1, characterized in that: The length of the test track is 80m, and the distance between the gantry and the support rod is 10m.

4. The agricultural machinery running noise measurement system according to claim 1, characterized in that: The photoelectric switch is arranged at a distance of 1.6 m from the bottom of the gantry, is powered by a 24 V DC power supply, and is connected to the electrical signal of the data acquisition card via the RS485 protocol.

5. The agricultural machinery running noise measurement system according to claim 1, characterized in that: The number of the radio transmission modules is 2, one of which is connected to the sound level meter via a cable, and the other is connected to the industrial computer via a cable, and the two radio transmission modules are connected by electrical signals.

6. The agricultural machinery running noise measurement system according to claim 1, characterized in that: The industrial computer is equipped with a host computer module, and the host computer module is used to set a communication interface and display real-time test data and measurement results.

7. The agricultural machinery running noise measurement system according to claim 6, characterized in that: The host computer module includes a setting unit, a real-time display unit and a result display unit. The setting unit is used to set the serial port of the radio transmission module to ensure normal communication. The real-time display unit is used to display the test data of the sound level meter in real time. The result display unit is used to process the test data and display the processed test data as a measurement result.

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