A noise working control method for a diesel generator set

Abstract

The present invention proposes a method for controlling noise during operation of a diesel generator set, comprising a diesel generator set body, an air intake pipe for connecting to the diesel generator set's air inlet, a support frame for supporting the air intake pipe, and a recessed space disposed on the ground for accommodating the diesel generator set body. A support base plate for supporting the diesel generator set body is positioned at the bottom of the recessed space. The present invention employs an extended air intake duct that extends the air intake port outside a tunnel. During operation, clean air containing normal oxygen enters the cylinder through the extended air intake duct from outside the tunnel for combustion, effectively improving the generator set's performance, ensuring proper operation, and extending the maintenance period of the generator set.

Description

[0001] This application is a divisional application of application number 202111114852X, application date September 23, 2021, and invention name "A diesel generator set intake pipe device and its working method". Technical Field

[0002] The present invention relates to the technical field of diesel generator sets, in particular to a noise control method for diesel generator sets. Background Art

[0003] The generator set produces loud noise when used in field training, and its target characteristics are obvious. In order to reduce the impact of noise on people and optimize the target characteristics of the generator set during operation, the generator set needs to be improved to achieve the purpose of reducing noise. Summary of the Invention

[0004] The present invention aims to at least solve the technical problems existing in the prior art, and in particular innovatively proposes an intake pipe device for a diesel generator set and a noise control method thereof.

[0005] To achieve the above-mentioned object of the present invention, the present invention provides an air intake pipe device for a diesel generator set, comprising a diesel generator set body, an air intake pipe for connecting to an air inlet of the diesel generator set, a support frame for supporting the air intake pipe, and a space recessed downwardly on the ground for accommodating the diesel generator set body, wherein a support base plate for supporting the diesel generator set body is placed at the bottom of the recessed space;

[0006] A supporting base plate is placed at the bottom of a downwardly concave space set on the ground, a diesel generator set body is set on the supporting base plate, a supporting frame is set on the ground, an air outlet of the air intake pipe is connected to the air intake of the diesel generator set, and the air intake pipe is detachably installed on the supporting frame so that the air intake pipe extends out of the downwardly concave space.

[0007] In a preferred embodiment of the present invention, an internal thread 1 or an external thread 1 is provided at the air outlet of the air inlet pipe, a connecting piece is provided at the air inlet of the diesel generator set, and the connecting piece is provided with an external thread 2 adapted to the internal thread 1 or an internal thread 2 adapted to the external thread 1;

[0008] The air outlet of the air intake pipe is connected to the air inlet of the diesel generator set through the internal thread 1 and the external thread 2, or the air outlet of the air intake pipe is connected to the air inlet of the diesel generator set through the external thread 1 and the internal thread 2.

[0009] In a preferred embodiment of the present invention, at least three through holes are provided on the support base plate, namely through hole one, through hole two, and through hole three. The three through holes are connected in a triangular shape. A threaded bolt passing through the through hole is provided on each through hole, and the threaded bolt is fixed by using nut one; a diesel generator set fixing hole compatible with the three threaded bolts is provided at the bottom of the diesel generator set, and the threaded bolt is fixed by using nut two after passing through the diesel generator set fixing hole.

[0010] In a preferred embodiment of the present invention, the support frame includes a support frame base, a vertical cross bar is provided on the support frame base, a vertically rotatable rotating body is provided on the top of the vertical cross bar, an upward oblique cross bar is provided on the rotating body, the angle between the oblique cross bar and the vertical cross bar is α, α∈(0,π / 2), and a tying rope is provided at the end of the oblique cross bar, and the air intake pipe is fixed to the support frame by the tying rope.

[0011] In a preferred embodiment of the present invention, the air inlet pipe is an amorphous coiled pipe.

[0012] In a preferred embodiment of the present invention, an oxygen sensor is further included, which is arranged at the air inlet of the diesel generator set to detect the air content at the air inlet of the diesel generator set. The oxygen data output end of the oxygen sensor is connected to the oxygen data input end of the diesel generator set controller.

[0013] In a preferred embodiment of the present invention, a noise monitoring system for monitoring the noise generated by the diesel generator set during operation is further included, the noise monitoring system comprising a movable noise monitoring terminal and a diesel generator set wireless transmission module provided on the diesel generator set;

[0014] The mobile noise monitoring terminal includes a housing and a PCB noise monitoring circuit board fixing mounting base provided in the housing for fixing and mounting a PCB noise monitoring circuit board. The PCB noise monitoring circuit board is fixedly mounted on the PCB noise monitoring circuit board fixing mounting base. A noise sensor, a noise processing module, a sensor controller, and a noise wireless transmission module are provided on the PCB noise monitoring circuit board.

[0015] The noise data output terminal of the noise sensor is connected to the noise data input terminal of the noise processing module, the noise data output terminal of the noise processing module is connected to the noise data input terminal of the sensor controller, and the noise wireless data terminal of the sensor controller is connected to the wireless data terminal of the noise wireless transmission module;

[0016] The wireless transmission module of the diesel generator set includes a first wireless module connected to the diesel generator set and a second wireless module connected to the diesel generator set. The wireless data transmission end of the first wireless module connected to the diesel generator set is connected to the first wireless data transmission end of the diesel generator set controller. The wireless data transmission end of the second wireless module connected to the diesel generator set is connected to the second wireless data transmission end of the diesel generator set controller.

[0017] The mobile noise monitoring terminal transmits the monitored noise data to the diesel generator set, and the diesel generator set transmits the noise data to the cloud platform.

[0018] In a preferred embodiment of the present invention, it also includes a display screen or a touch display screen arranged on the surface of the shell, the data display end of the display screen is connected to the data display end of the sensor controller, and the touch display end of the touch display screen is connected to the touch display end of the sensor controller.

[0019] In a preferred embodiment of the present invention, the noise processing module includes a noise collection unit, a first noise amplification unit, a second noise amplification unit, a noise following unit and a noise A / D conversion module;

[0020] The noise data output end of the noise sensor is connected to the noise data input end of the noise collection unit, the noise data output end of the noise collection unit is connected to the noise data input end of the first noise amplification unit, the noise data output end of the first noise amplification unit is connected to the noise data input end of the second noise amplification unit, the noise data output end of the second noise amplification unit is connected to the noise data input end of the noise following unit, the noise data output end of the noise following unit is connected to the data input end of the noise A / D conversion module, and the data output end of the noise A / D conversion module is connected to the noise data input end of the sensor controller.

[0021] In a preferred embodiment of the present invention, the noise collection unit includes: a power ground terminal of the noise sensor is connected to the power ground, the power terminal of the noise sensor is respectively connected to the first end of the resistor R11 and the noise data input terminal of the first noise amplification unit, the second end of the resistor R11 is respectively connected to the first end of the resistor R10 and the first end of the capacitor C11, the second end of the capacitor C11 is connected to the power ground, and the second end of the resistor R10 is connected to the +1.8V power supply;

[0022] or / and the first noise amplification unit includes: an inverting input terminal of an amplifier U4 is respectively connected to a first end of a resistor R7 and a first end of a resistor R8, a second end of the resistor R8 is connected to a noise data output terminal of the noise collection unit, a second end of the resistor R7 is respectively connected to an output terminal of the amplifier U4 and a first end of a capacitor C3, a non-inverting input terminal of the amplifier U4 is connected to a first end of a resistor R9, a second end of the resistor R9 is connected to a power ground, a power terminal of the amplifier U4 is connected to a +5V power supply, a power ground terminal of the amplifier U4 is connected to a power ground, and a second end of the capacitor C3 is connected to a noise data input terminal of the second noise amplification unit;

[0023] or / and the second noise amplifying unit includes: an inverting input terminal of an amplifier U3 connected to a first terminal of a resistor R1 and a first terminal of a resistor R5, respectively; a second terminal of the resistor R5 connected to a noise data output terminal of the first noise amplifying unit; a second terminal of the resistor R1 connected to an output terminal of the amplifier U3 and a noise data input terminal of the noise follower unit, respectively; a non-inverting input terminal of the amplifier U3 connected to a first terminal of a resistor R6, a second terminal of the resistor R6 connected to a power ground; a power terminal of the amplifier U3 connected to a +5V power supply; and a power ground terminal of the amplifier U3 connected to a power ground;

[0024] The or / and noise follower unit includes: an inverting input terminal of the amplifier U2 is connected to the output terminal of the amplifier U2 and the data input terminal of the noise A / D conversion module respectively, a non-inverting input terminal of the amplifier U2 is connected to the noise data output terminal of the second noise amplification unit, a power supply terminal of the amplifier U2 is connected to a +5V power supply, and a power ground terminal of the amplifier U2 is connected to a power ground;

[0025] The or / and noise A / D conversion module includes: the noise data input terminal CH0 of the A / D conversion chip U6 is connected to the noise data output terminal of the noise follower unit, the power ground terminal GND of the A / D conversion chip U6 is connected to the power ground, the chip select input terminal SC of the A / D conversion chip U6 is connected to the chip select output terminal of the sensor controller, the power terminal VCC of the A / D conversion chip U6 is connected to the +5V power supply, the noise data output terminal DO of the A / D conversion chip U6 and the noise data input terminal DI of the A / D conversion chip U6 are respectively connected to the noise data input terminal of the sensor controller, and the clock input terminal SCK of the A / D conversion chip U6 is connected to the clock output terminal of the sensor controller.

[0026] The present invention also discloses a method for controlling noise operation of a diesel generator set, comprising the following steps:

[0027] S1, preparation;

[0028] S2, diesel generator set working;

[0029] S3, judging whether the noise exceeds the standard based on the noise data collected by the mobile noise monitoring terminal:

[0030] If N≥N0, where N represents the noise value collected and N0 represents the preset noise threshold, then the noise emitted by the diesel generator set exceeds the standard.

[0031] If N<N0, the sound emitted by the diesel generator set meets the standard.

[0032] In a preferred embodiment of the present invention, step S1 includes the following steps:

[0033] S11, dig a rectangular deep pit with a length, width and depth of Lm, Wm and Dm respectively, where L represents the length of the deep pit, W represents the width of the deep pit, D represents the depth of the deep pit, m represents the length in meters, L-L0 ≥ u, W-W0 ≥ u, D-D0 ≥ u, L0 represents the length of the supporting base plate, W0 represents the width of the supporting base plate, D0 represents the height of the diesel generator set, and u represents a reserved threshold value, which must be a positive number and is set to 0.75m. This means that a downwardly concave space set on the ground is obtained.

[0034] S12, insert the threaded bolt through the through hole and secure it to the support base plate using nut 1, then insert the threaded bolt through the diesel generator set fixing hole on the diesel generator set and secure it to the support plate using nut 2; the diesel generator set and the support base plate are assembled;

[0035] S13, place the assembled diesel generator set into the deep pit. After the diesel generator set is placed in the deep pit, tighten the internal thread 1 of the intake pipe and the external thread 2 of the connector. Place the support frame according to the length of the intake pipe. After the support frame is placed, use the tying rope to tie the intake pipe. The preparation work is now completed.

[0036] In a preferred embodiment of the present invention, step S2 includes the following steps:

[0037] S21, placing the mobile noise monitoring terminal at a distance from the diesel generator set of Hmin to Hmax, where Hmin represents the minimum distance between the mobile noise monitoring terminal and the diesel generator set, and Hmax represents the maximum distance between the mobile noise monitoring terminal and the diesel generator set; Hmin <Hmax;

[0038] S22. For a mobile noise monitoring terminal or a diesel generator set, calculate the distance between the mobile noise monitoring terminal and the diesel generator set. The distance between the mobile noise monitoring terminal and the diesel generator set is calculated as follows:

[0039]

[0040] Wherein, I represents the number of times the diesel generator set sends ranging data to the mobile noise monitoring terminal;

[0041] J represents the number of times the mobile noise monitoring terminal sends distance measurements to the diesel generator set;

[0042] T i,发 Indicates the time when the i-th group of mobile noise monitoring terminals sends the ranging;

[0043] T i,接 Indicates the moment when the i-th group of diesel generators receives the ranging signal sent by the mobile noise monitoring terminal;

[0044] T 发,j Indicates the time when the jth group of mobile noise monitoring terminals sends the ranging;

[0045] T 接,j Indicates the moment when the jth group of mobile noise monitoring terminals receives the distance measurement sent by the diesel generator set;

[0046] c represents the transmission speed of electromagnetic waves;

[0047] φ represents the electromagnetic wave impact factor; φ∈(0,0.115];

[0048] H represents the distance between the mobile noise monitoring terminal and the diesel generator set;

[0049] S23, determine the relationship between H, Hmax, and Hmin:

[0050] If H<Hmin, the mobile noise monitoring terminal will issue a warning message on the display screen, indicating that the distance between the mobile noise monitoring terminal and the diesel generator set does not meet the placement conditions, and the mobile noise monitoring terminal needs to be further away from the diesel generator set;

[0051] If H>Hmax, the mobile noise monitoring terminal will issue a warning message on the display screen, indicating that the distance between the mobile noise monitoring terminal and the diesel generator set does not meet the placement conditions, and the mobile noise monitoring terminal needs to be closer to the diesel generator set;

[0052] If Hmin≤H≤Hmax, a prompt message will be issued on the display screen of the mobile noise monitoring terminal, which prompts that the distance between the mobile noise monitoring terminal and the diesel generator set is appropriate, and the mobile noise monitoring terminal should be placed here.

[0053] In a preferred embodiment of the present invention, step S2 includes the following steps:

[0054] S2-1, the diesel generator sends a wake-up control command to the mobile noise monitoring terminal. After the mobile noise monitoring terminal receives the wake-up control command sent by the diesel generator, the sensor controller sends a conduction level to the base of its transistor Q1, the base of the transistor Q2, and the base of the transistor Q3, respectively. The transistors Q1, Q2, and Q3 are all in the on state. At this time, the emitter of the transistor Q1 outputs a +5V power supply voltage, the emitter of the transistor Q2 outputs a +3.3V power supply voltage, and the emitter of the transistor Q3 outputs a +1.8V power supply voltage;

[0055] S2-2, the sensor controller converts the analog noise data into digital noise data through the noise A / D conversion module and inputs it into the sensor controller to realize the collection of noise data;

[0056] S2-3, the sensor controller calculates the noise display value. The calculation method of the noise display value is:

[0057]

[0058] Among them, n represents the noise display value;

[0059] K represents the digital noise data collected by the sensor controller;

[0060] ε1 represents the first magnification, R7 represents the resistance value of resistor R7, and R8 represents the resistance value of resistor R8;

[0061] ε2 represents the second magnification, R1 represents the resistance value of resistor R1, and R5 represents the resistance value of resistor R5;

[0062] η represents the noise proportional coefficient;

[0063] λ represents the noise sensor acquisition error rate, λ∈(0,0.147];

[0064] S2-4, transmits the noise display value n to the diesel generator set;

[0065] S2-5, after receiving the noise display value n sent by the mobile noise monitoring terminal, the diesel generator set sends the received noise display value n to the cloud platform.

[0066] To sum up, due to the adoption of the above technical solution, the present invention designs an extended air intake duct, and extends the air inlet of the air intake pipe outside the tunnel. When the unit is working, clean air with normal oxygen content enters the cylinder through the extended air intake duct from outside the tunnel for combustion, which can effectively improve the use effect of the generator set, ensure the normal operation of the generator set, extend the maintenance time of the generator set, and realize the display of noise after acquisition on the cloud platform and the selection of the location of the mobile noise monitoring terminal and the diesel generator set.

[0067] Additional aspects and advantages of the present invention will be set forth in part in the description which follows and, in part, will be obvious from the description which follows, or may be learned by practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0068] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the following description of the embodiments with reference to the accompanying drawings, in which:

[0069] Figure 1 It is a structural schematic diagram of the present invention.

[0070] Figure 2 It is a circuit connection diagram of the present invention.

[0071] Figure 3 It is a circuit connection diagram of the present invention. DETAILED DESCRIPTION

[0072] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0073] The present invention provides a noise prevention device for a diesel generator set, such as Figure 1 As shown, it includes a diesel generator body 1, and also includes a space 4 recessed downward on the ground for accommodating the diesel generator body 1, and a support base plate for supporting the diesel generator body 1 is placed at the bottom of the recessed space 4. And camouflage is covered on the upper part of the tunnel (deep pit) to reduce the impact of noise on people and optimize the target characteristics of the generator set when it is working. Such operation has certain benefits in reducing noise and optimizing target characteristics. However, at the same time, since the air in the tunnel is relatively closed and the ventilation is poor, the exhaust gas generated by the generator set is not easy to be discharged, resulting in an increase in exhaust gas emissions and a decrease in oxygen content in the air, causing the unit air filter to be easily blocked by the exhaust smoke of the generator set, poor air intake, and difficulty in starting the unit, resulting in a serious drop in output power.

[0074] The present invention also provides a diesel generator set intake pipe device, such as Figure 1As shown, it includes a diesel generator set body 1, an air intake pipe 2 for connecting to the air intake of the diesel generator set, a support frame 3 for supporting the air intake pipe 2, and a space 4 recessed downwardly on the ground for accommodating the diesel generator set body 1. A supporting base plate for supporting the diesel generator set body 1 is placed at the bottom of the recessed space 4.

[0075] A supporting base plate is placed at the bottom of a space 4 that is recessed downward on the ground, a diesel generator set body 1 is arranged on the supporting base plate, a supporting frame 3 is arranged on the ground, an air outlet of the air intake pipe 2 is connected to the air intake of the diesel generator set, and the air intake pipe 2 is detachably mounted on the supporting frame 3 so that the air intake pipe 2 extends out of the recessed space 4.

[0076] In a preferred embodiment of the present invention, an internal thread 1 or an external thread 1 is provided at the air outlet of the air inlet pipe 2, and a connecting piece is provided at the air inlet of the diesel generator set, and the connecting piece is provided with an external thread 2 adapted to the internal thread 1 or an internal thread 2 adapted to the external thread 1;

[0077] The air outlet of the air intake pipe 2 is connected to the air inlet of the diesel generator set through the internal thread 1 and the external thread 2, or the air outlet of the air intake pipe 2 is connected to the air inlet of the diesel generator set through the external thread 1 and the internal thread 2. The air intake pipe 2 is fixedly mounted at the air inlet of the diesel generator set through the internal thread 1 on the air outlet of the air intake pipe 2 and the external thread 2 on the connecting piece. Fresh air outside the deep pit is obtained through the air intake pipe 2 to prevent oxygen depletion. In order to ensure that the exhaust gas generated by the diesel generator set is discharged from the deep pit and prevent it from generating dirt on the surface of the diesel generator set, an exhaust pipe is also provided. The exhaust pipe can be connected to the exhaust hole on the diesel generator set by a threaded connection; in addition, in order to prevent noise more effectively, a noise shielding plate is also provided to cover the deep pit. Two shielding plate through holes can be provided on the noise shielding plate, namely shielding plate through hole 1 and shielding plate through hole 2. The air intake pipe 2 extends out of the deep pit after passing through the shielding plate through hole 1, and the exhaust pipe extends out of the deep pit after passing through the shielding plate through hole 2.

[0078] In a preferred embodiment of the present invention, the support base is provided with at least three through-holes extending through the support base, namely through-hole 1, through-hole 2, and through-hole 3. The three through-holes are connected in a triangular shape. A threaded bolt is provided in each through-hole and secured with a first nut. Diesel generator set fixing holes are provided at the bottom of the diesel generator set, corresponding to the three threaded bolts. The threaded bolts are secured with a second nut after passing through the diesel generator set fixing holes. This secures the support base and the diesel generator set, prevents the diesel generator set from sliding relative to each other within the pit, and reduces pressure on the pit bottom.

[0079] In a preferred embodiment of the present invention, the support frame 3 includes a support frame base, a vertical crossbar is provided on the support frame base, a vertically rotatable rotating body is provided on the top of the vertical crossbar, an upward oblique crossbar is provided on the rotating body, the angle between the oblique crossbar and the vertical crossbar is α, α∈(0,π / 2), and a tying rope is provided at the end of the oblique crossbar, and the air intake pipe 2 is fixed to the support frame 3 by the tying rope. The placement of the support frame 3 can be arbitrarily set according to the length of the air intake pipe 2 extending out of the deep pit, and the tying direction can be changed because the rotating body can rotate vertically.

[0080] In a preferred embodiment of the present invention, the air inlet pipe 2 is an amorphous coiled pipe.

[0081] In a preferred embodiment of the present invention, an oxygen sensor is further provided at the diesel generator set's air inlet for detecting the air content at the inlet. The oxygen sensor's oxygen data output is connected to the diesel generator set's oxygen data input. When the oxygen sensor detects that the oxygen content is below a set oxygen threshold and the duration is greater than or equal to the set duration threshold, the diesel generator set controller issues an alarm, indicating that the oxygen content at the diesel generator set's air inlet is too low and that the inlet pipe needs to be adjusted.

[0082] In a preferred embodiment of the present invention, a noise monitoring system for monitoring the noise generated by the diesel generator set body 1 during operation is further included, the noise monitoring system comprising a movable noise monitoring terminal and a diesel generator set wireless transmission module provided on the diesel generator set body 1;

[0083] The mobile noise monitoring terminal includes a housing and a PCB noise monitoring circuit board fixing mounting base provided in the housing for fixing and mounting a PCB noise monitoring circuit board. The PCB noise monitoring circuit board is fixedly mounted on the PCB noise monitoring circuit board fixing mounting base. A noise sensor, a noise processing module, a sensor controller, and a noise wireless transmission module are provided on the PCB noise monitoring circuit board.

[0084] The noise data output terminal of the noise sensor is connected to the noise data input terminal of the noise processing module, the noise data output terminal of the noise processing module is connected to the noise data input terminal of the sensor controller, and the noise wireless data terminal of the sensor controller is connected to the wireless data terminal of the noise wireless transmission module;

[0085] The wireless transmission module of the diesel generator set includes a first wireless module connected to the diesel generator set and a second wireless module connected to the diesel generator set. The wireless data transmission end of the first wireless module connected to the diesel generator set is connected to the first wireless data transmission end of the diesel generator set controller. The wireless data transmission end of the second wireless module connected to the diesel generator set is connected to the second wireless data transmission end of the diesel generator set controller.

[0086] The mobile noise monitoring terminal transmits the monitored noise data to the diesel generator set, which in turn transmits the noise data to the cloud platform. This enables communication between the mobile noise monitoring terminal and the diesel generator set, as well as between the diesel generator set and the cloud platform, allowing the cloud platform to constantly monitor the operating status of the diesel generator set.

[0087] In a preferred embodiment of the present invention, a display screen or a touch screen is further included on the surface of the shell, the data display end of the display screen is connected to the data display end of the sensor controller, and the touch display end of the touch screen is connected to the touch display end of the sensor controller. It is convenient to understand the degree of influence of the noise emitted by the diesel generator set by the noise display value displayed on the display screen, wherein, if the noise display value is within the preset first noise display threshold and the preset second noise display threshold, and the preset second noise display threshold is greater than the preset first noise display threshold, then the noise is level three noise; if the noise display value is less than or equal to the preset first noise display threshold, then the noise is level four noise; if the noise display value is within the preset second noise display threshold and the preset third noise display threshold, and the preset third noise display threshold is greater than the preset second noise display threshold, then the noise is level two noise; if the noise display value is greater than or equal to the preset third noise display threshold, then the noise is level one noise.

[0088] In a preferred embodiment of the present invention, the noise processing module includes a noise collection unit, a first noise amplification unit, a second noise amplification unit, a noise following unit and a noise A / D conversion module;

[0089] The noise data output terminal of the noise sensor is connected to the noise data input terminal of the noise collection unit, which is connected to the noise data input terminal of the first noise amplification unit, which is connected to the noise data input terminal of the second noise amplification unit, which is connected to the noise data input terminal of the noise follower unit, which is connected to the data input terminal of the noise A / D conversion module, which is connected to the noise data input terminal of the sensor controller. This implements operations such as collecting, amplifying, following, and A / D conversion of the noise generated by the diesel generator set.

[0090] In a preferred embodiment of the present invention, the noise collection unit includes: a power ground terminal of the noise sensor is connected to the power ground, the power terminal of the noise sensor is respectively connected to the first end of the resistor R11 and the noise data input terminal of the first noise amplification unit, the second end of the resistor R11 is respectively connected to the first end of the resistor R10 and the first end of the capacitor C11, the second end of the capacitor C11 is connected to the power ground, and the second end of the resistor R10 is connected to the +1.8V power supply;

[0091] Or / and the first noise amplification unit includes: the inverting input terminal of the amplifier U4 is respectively connected to the first end of the resistor R7 and the first end of the resistor R8, the second end of the resistor R8 is connected to the noise data output terminal of the noise collection unit, the second end of the resistor R7 is respectively connected to the output terminal of the amplifier U4 and the first end of the capacitor C3, the non-inverting input terminal of the amplifier U4 is connected to the first end of the resistor R9, the second end of the resistor R9 is connected to the power ground, the power terminal of the amplifier U4 is connected to the +5V power supply, the power ground terminal of the amplifier U4 is connected to the power ground, and the second end of the capacitor C3 is connected to the noise data input terminal of the second noise amplification unit; the weak noise signal output by the noise sensor is amplified by the first noise amplification unit to facilitate subsequent circuit processing.

[0092] Or / and the noise second amplification unit includes: the inverting input terminal of the amplifier U3 is respectively connected to the first end of the resistor R1 and the first end of the resistor R5, the second end of the resistor R5 is connected to the noise data output terminal of the noise first amplification unit, the second end of the resistor R1 is respectively connected to the output terminal of the amplifier U3 and the noise data input terminal of the noise follower unit, the non-inverting input terminal of the amplifier U3 is connected to the first end of the resistor R6, the second end of the resistor R6 is connected to the power ground, the power supply terminal of the amplifier U3 is connected to the +5V power supply, and the power ground terminal of the amplifier U3 is connected to the power ground; the noise signal output by the noise first amplification unit is further amplified by the noise second amplification unit to facilitate subsequent circuit processing.

[0093] Or / and the noise follower unit includes: the inverting input terminal of the amplifier U2 is respectively connected to the output terminal of the amplifier U2 and the data input terminal of the noise A / D conversion module, the non-inverting input terminal of the amplifier U2 is connected to the noise data output terminal of the second noise amplification unit, the power supply terminal of the amplifier U2 is connected to the +5V power supply, and the power ground terminal of the amplifier U2 is connected to the power ground; the high input impedance and low output impedance of the noise follower unit are used for effective isolation.

[0094] The or / and noise A / D conversion module includes: a noise data input terminal CH0 of an A / D conversion chip U6 connected to a noise data output terminal of a noise follower unit; a power ground terminal GND of the A / D conversion chip U6 connected to a power ground; a chip select input terminal SC of the A / D conversion chip U6 connected to a chip select output terminal of a sensor controller; a power supply terminal VCC of the A / D conversion chip U6 connected to a +5V power supply; a noise data output terminal DO of the A / D conversion chip U6 and a noise data input terminal DI of the A / D conversion chip U6 respectively connected to a noise data input terminal of the sensor controller; and a clock input terminal SCK of the A / D conversion chip U6 connected to a clock output terminal of the sensor controller. The noise A / D conversion module converts the analog noise signal input to the noise A / D conversion module into a digital noise signal for output, thereby facilitating recognition by the sensor controller.

[0095] The specific connection is: Figure 2As shown, the power ground terminal of the noise sensor is connected to the power ground, the power supply terminal of the noise sensor is respectively connected to the first end of the resistor R11 and the second end of the resistor R8, the second end of the resistor R11 is respectively connected to the first end of the resistor R10 and the first end of the capacitor C11, the second end of the capacitor C11 is connected to the power ground, and the second end of the resistor R10 is connected to the +1.8V power supply; the inverting input terminal of the amplifier U4 is respectively connected to the first end of the resistor R7 and the first end of the resistor R8, the second end of the resistor R7 is respectively connected to the output terminal of the amplifier U4 and the first end of the capacitor C3, the non-inverting input terminal of the amplifier U4 is connected to the first end of the resistor R9, the second end of the resistor R9 is connected to the power ground, the power supply terminal of the amplifier U4 is connected to the +5V power supply, the power ground terminal of the amplifier U4 is connected to the power ground, and the second end of the capacitor C3 is connected to the second end of the resistor R5; the inverting input terminal of the amplifier U3 is respectively connected to the first end of the resistor R1 and the first end of the resistor R5, the second end of the resistor R1 is respectively connected to the output terminal of the amplifier U3 and the amplifier The positive input terminal of U2 is connected, the positive input terminal of the amplifier U3 is connected to the first terminal of the resistor R6, the second terminal of the resistor R6 is connected to the power ground, the power terminal of the amplifier U3 is connected to the +5V power supply, and the power ground terminal of the amplifier U3 is connected to the power ground; the inverting input terminal of the amplifier U2 is respectively connected to the output terminal of the amplifier U2 and the noise data input terminal CH0 of the A / D conversion chip U6, the power terminal of the amplifier U2 is connected to the +5V power supply, and the power ground terminal of the amplifier U2 is connected to the power ground; the power ground terminal GND of the A / D conversion chip U6 is connected to the power ground, the chip select input terminal SC of the A / D conversion chip U6 is connected to the chip select output terminal of the sensor controller, the power terminal VCC of the A / D conversion chip U6 is connected to the +5V power supply, the noise data output terminal DO of the A / D conversion chip U6 and the noise data input terminal DI of the A / D conversion chip U6 are respectively connected to the noise data input terminal of the sensor controller, and the clock input terminal SCK of the A / D conversion chip U6 is connected to the clock output terminal of the sensor controller.

[0096] The present invention also discloses a method for controlling noise operation of a diesel generator set, comprising the following steps:

[0097] S1, preparation;

[0098] S2, diesel generator set working;

[0099] S3, judging whether the noise exceeds the standard based on the noise data collected by the mobile noise monitoring terminal:

[0100] If N≥N0, where N represents the noise value collected and N0 represents the preset noise threshold, then the noise emitted by the diesel generator set exceeds the standard.

[0101] If N<N0, the sound emitted by the diesel generator set meets the standard.

[0102] In a preferred embodiment of the present invention, step S1 includes the following steps:

[0103] S11, dig a rectangular deep pit with a length, width and depth of Lm, Wm and Dm respectively, where L represents the length of the pit, W represents the width of the pit, D represents the depth of the pit, m represents the length in meters, L-L0 ≥ u, W-W0 ≥ u, D-D0 ≥ u, L0 represents the length of the supporting base, W0 represents the width of the supporting base, D0 represents the height of the diesel generator set, and u represents a reserved threshold value, which is a positive number and is set to 0.75 m. Thus, a downwardly concave space 4 set on the ground is obtained.

[0104] S12, insert the threaded bolt through the through hole and secure it to the support base plate using nut 1, then insert the threaded bolt through the diesel generator set fixing hole on the diesel generator set and secure it to the support plate using nut 2; the diesel generator set and the support base plate are assembled;

[0105] S13, place the assembled diesel generator set into the deep pit. After the diesel generator set is placed in the deep pit, tighten the internal thread 1 of the intake pipe 2 and the external thread 2 of the connecting piece. Place the support frame 3 according to the length of the intake pipe 2. After the support frame 3 is placed, use the tying rope to tie the intake pipe 2. The preparation work is now completed.

[0106] In a preferred embodiment of the present invention, step S2 includes the following steps:

[0107] S21, placing the mobile noise monitoring terminal at a distance from the diesel generator set of Hmin to Hmax, where Hmin represents the minimum distance between the mobile noise monitoring terminal and the diesel generator set, and Hmax represents the maximum distance between the mobile noise monitoring terminal and the diesel generator set; Hmin <Hmax;

[0108] S22. For a mobile noise monitoring terminal or a diesel generator set, calculate the distance between the mobile noise monitoring terminal and the diesel generator set. The distance between the mobile noise monitoring terminal and the diesel generator set is calculated as follows:

[0109]

[0110] Wherein, I represents the number of times the diesel generator set sends ranging data to the mobile noise monitoring terminal;

[0111] J represents the number of times the mobile noise monitoring terminal sends distance measurements to the diesel generator set;

[0112] T i,发Indicates the time when the i-th group of mobile noise monitoring terminals sends the ranging;

[0113] T i,接 Indicates the moment when the i-th group of diesel generators receives the ranging signal sent by the mobile noise monitoring terminal;

[0114] T 发,j Indicates the time when the jth group of mobile noise monitoring terminals sends the ranging;

[0115] T 接,j Indicates the moment when the jth group of mobile noise monitoring terminals receives the distance measurement sent by the diesel generator set;

[0116] c represents the transmission speed of electromagnetic waves;

[0117] φ represents the electromagnetic wave impact factor; φ∈(0,0.115];

[0118] H represents the distance between the mobile noise monitoring terminal and the diesel generator set;

[0119] S23, determine the relationship between H, Hmax, and Hmin:

[0120] If H<Hmin, the mobile noise monitoring terminal will issue a warning message on the display screen, indicating that the distance between the mobile noise monitoring terminal and the diesel generator set does not meet the placement conditions, and the mobile noise monitoring terminal needs to be further away from the diesel generator set;

[0121] If H>Hmax, the mobile noise monitoring terminal will issue a warning message on the display screen, indicating that the distance between the mobile noise monitoring terminal and the diesel generator set does not meet the placement conditions, and the mobile noise monitoring terminal needs to be closer to the diesel generator set;

[0122] If Hmin≤H≤Hmax, a prompt message will be displayed on the display screen of the mobile noise monitoring terminal, indicating that the distance between the mobile noise monitoring terminal and the diesel generator set is appropriate and the mobile noise monitoring terminal should be placed here. This provides a prompt for the location of the mobile noise monitoring terminal.

[0123] In a preferred embodiment of the present invention, step S2 includes the following steps:

[0124] S2-1, the diesel generator set sends a wake-up control command to the portable noise monitoring terminal. After the portable noise monitoring terminal receives the wake-up control command sent by the diesel generator set, the sensor controller sends a conduction level to the base of its transistor Q1, the base of the transistor Q2 and the base of the transistor Q3 respectively. The transistors Q1, Q2 and Q3 are all in the on state. At this time, the emitter of the transistor Q1 outputs a +5V power supply voltage, the emitter of the transistor Q2 outputs a +3.3V power supply voltage, and the emitter of the transistor Q3 outputs a +1.8V power supply voltage; the portable noise monitoring terminal is awakened and controls the three types of power supply voltage outputs to power other required components. For example, the +5V power supply voltage output by the emitter of the transistor Q1 is used to power the power supply end of the amplifier U4, the power supply end of the amplifier U2, the power supply end of the amplifier U3, the power supply end VCC of the A / D conversion chip U6, and so on.

[0125] S2-2, the sensor controller converts the analog noise data into digital noise data through the noise A / D conversion module and inputs it into the sensor controller to realize the collection of noise data;

[0126] S2-3, the sensor controller calculates the noise display value. The calculation method of the noise display value is:

[0127]

[0128] Among them, n represents the noise display value;

[0129] K represents the digital noise data collected by the sensor controller;

[0130] ε1 represents the first magnification, R7 represents the resistance value of resistor R7, and R8 represents the resistance value of resistor R8;

[0131] ε2 represents the second magnification, R1 represents the resistance value of resistor R1, and R5 represents the resistance value of resistor R5;

[0132] η represents the noise proportional coefficient;

[0133] λ represents the noise sensor acquisition error rate, λ∈(0,0.147];

[0134] S2-4, transmits the noise display value n to the diesel generator set;

[0135] S2-5, after receiving the noise display value n sent by the mobile noise monitoring terminal, the diesel generator set sends the received noise display value n to the cloud platform.

[0136] Among them, the noise wireless transmission module: Figure 2As shown, the mode chip select input terminal CE of the transceiver chip U1 is connected to the mode chip select output terminal of the sensor controller, the enable input terminal CSN of the transceiver chip U1 is connected to the enable output terminal of the sensor controller, the clock input terminal SCK of the transceiver chip U1 is connected to the clock output terminal of the sensor controller, the data input terminal MOSI of the transceiver chip U1 is connected to the data output terminal of the sensor controller, the data output terminal MISO of the transceiver chip U1 is connected to the data input terminal of the sensor controller, and the request interrupt input terminal IRQ of the transceiver chip U1 is connected to the request interrupt input terminal of the sensor controller. The output end is connected; the first end XTALP of the crystal oscillator of the transceiver chip U1 is respectively connected to the first end of the resistor R3, the first end of the capacitor C1 and the first end of the crystal oscillator X1, the second end XTALN of the crystal oscillator of the transceiver chip U1 is respectively connected to the second end of the resistor R3, the first end of the capacitor C2 and the second end of the crystal oscillator X1, the second end of the capacitor C1 and the second end of the capacitor C2 are respectively connected to the power ground; the power input end VDD of the transceiver chip U1 is respectively connected to the first end of the capacitor C9, the first end of the capacitor C10 and the first end of the resistor R4, the second end of the resistor R4 is connected to the 3.3V power supply The first terminal of the transceiver chip U1 is connected to the first end of the capacitor C5 and the first end of the inductor L1, the second end of the capacitor C5 is connected to the first end of the inductor L3, and the second end of the inductor L3 is connected to the ground of the wireless signal. The first end of the inductor L4 and the first end of the capacitor C6 are connected to the first end of the inductor L4 and the first end of the capacitor C6, respectively. The second end of the inductor L4 is connected to the first end of the capacitor C10 and the antenna ANT, respectively. The second end of the capacitor C6 and the second end of the capacitor C10 are connected to the power ground. The second wireless signal terminal RFP of the transceiver chip U1 is connected to the second end of the inductor L1 and the first end of the inductor L2, respectively. The second end of the inductor L2 is connected to the first end of the capacitor C4, the first end of the capacitor C8, and the filter power supply terminal VDDPA of the transceiver chip U1, respectively. The second end of the capacitor C4 and the second end of the capacitor C8 are connected to the power ground. This π-type filtering eliminates interference, has strong anti-interference capabilities, and ensures stable signal transmission.Among them, the model of the transceiver chip U1 is nRF2401, the resistance of the resistor R4 is 10Ω, the capacitance of the capacitor C16 is 10uF, the capacitance of the capacitor C9 is 820nF, the resistance of the resistor R3 is 1M, the capacitance of the capacitor C1 and the capacitor C2 are 22pF, the frequency of the crystal oscillator X1 is 16Mhz, the capacitance of the capacitor C8 is 2pF, the capacitance of the capacitor C4 is 220nF, the inductance of the inductor L2 is 2nH, the inductance of the inductor L1 is 7nH, the inductance of the inductor L3 is 1nH, the resistance of the inductor L4 is 0Ω, the capacitance of the capacitor C5 is 2pF, the resistance of the resistor R2 is 22K, the capacitance of the capacitor C7 is 33nF, and the model of the sensor controller is STC89C52.

[0137] The first wireless module connected to the diesel generator set: the mode chip select input terminal CE of the transceiver chip U1 is connected to the mode chip select output terminal of the diesel generator set controller, the enable input terminal CSN of the transceiver chip U1 is connected to the enable output terminal of the diesel generator set controller, the clock input terminal SCK of the transceiver chip U1 is connected to the clock output terminal of the diesel generator set controller, the data input terminal MOSI of the transceiver chip U1 is connected to the data output terminal of the diesel generator set controller, the data output terminal MISO of the transceiver chip U1 is connected to the data input terminal of the diesel generator set controller, and the request terminal of the transceiver chip U1 is connected to the data terminal of the diesel generator set controller. The interrupt input terminal IRQ is connected to the request interrupt output terminal of the diesel generator set controller; the crystal oscillator first terminal XTALP of the transceiver chip U1 is respectively connected to the first end of the resistor R3, the first end of the capacitor C1 and the first end of the crystal oscillator X1, the crystal oscillator second terminal XTALN of the transceiver chip U1 is respectively connected to the second end of the resistor R3, the first end of the capacitor C2 and the second end of the crystal oscillator X1, the second end of the capacitor C1 and the second end of the capacitor C2 are respectively connected to the power ground; the power input terminal VDD of the transceiver chip U1 is respectively connected to the first end of the capacitor C9, the first end of the capacitor C10 and the first end of the resistor R4, The second end of the resistor R4 is connected to the 3.3V power supply, and the second end of the capacitor C9 and the second end of the capacitor C10 are respectively connected to the power ground; the reference current terminal IREF of the transceiver chip U1 is connected to the first end of the resistor R2, the reference voltage terminal COVDD of the transceiver chip U1 is connected to the first end of the capacitor C7, the second end of the resistor R2, the second end of the capacitor C7 and the ground terminal of the transceiver chip U1 are respectively connected to the power ground; the wireless signal first terminal RFN of the transceiver chip U1 is respectively connected to the first end of the capacitor C5 and the first end of the inductor L1, the second end of the capacitor C5 is connected to the first end of the inductor L3, and the inductor L4 is connected to the ground terminal of the transceiver chip U1. The second end of inductor L3 is connected to the first end of inductor L4 and the first end of capacitor C6, respectively. The second end of inductor L4 is connected to the first end of capacitor C10 and antenna ANT, respectively. The second end of capacitor C6 and the second end of capacitor C10 are connected to the power ground. The second wireless signal terminal RFP of transceiver chip U1 is connected to the second end of inductor L1 and the first end of inductor L2, respectively. The second end of inductor L2 is connected to the first end of capacitor C4, the first end of capacitor C8, and the filter power supply terminal VDDPA of transceiver chip U1, respectively. The second end of capacitor C4 and the second end of capacitor C8 are connected to the power ground. This π-type filtering eliminates interference, has strong anti-interference capabilities, and ensures stable signal transmission.The transceiver chip U1 is nRF2401, the resistance of resistor R4 is 10Ω, the capacitance of capacitor C16 is 10uF, the capacitance of capacitor C9 is 820nF, the resistance of resistor R3 is 1M, the capacitance of capacitors C1 and C2 is 22pF, the frequency of crystal oscillator X1 is 16MHz, the capacitance of capacitor C8 is 2pF, the capacitance of capacitor C4 is 220nF, the inductor L2 is 2nH, the inductor L1 is 7nH, the inductor L3 is 1nH, the resistance of inductor L4 is 0Ω, the capacitance of capacitor C5 is 2pF, the resistance of resistor R2 is 22K, the capacitance of capacitor C7 is 33nF, and the model of the diesel generator set controller is STC89C52. That is, the noise wireless transmission module and the diesel generator set first connection wireless module use the same wireless module.

[0138] In a preferred embodiment of the present invention, a GPS module is further included on the diesel generator set, and the GPS module is connected to the diesel generator set controller. The GPS module includes a GPS signal processing and output unit, an antenna state detection unit, and a GPS chip U5. The data signal output end of the GPS signal processing and output unit is connected to the data signal input end of the GPS chip U5, and the signal end of the antenna state detection unit is connected to the GPS chip U5. This enables the position detection of the diesel generator.

[0139] The GPS signal processing output unit includes: Figure 3As shown, the antenna ANT is respectively connected to the first end of the capacitor C201 and the first end of the resistor R201, the second end of the capacitor C201 is respectively connected to the first end of the capacitor C202 and the first end of the inductor L201, the second end of the capacitor C202 is respectively connected to the power ground, the second end of the inductor L201 is connected to the signal input terminal IN of the signal amplifier chip U15, the ground terminal GND of the signal amplifier chip U15 is connected to the power ground, the adjustment terminal PS of the signal amplifier chip U15 and the power supply terminal VCC of the signal amplifier chip U15 are respectively connected to the first end of the capacitor C203, the first end of the resistor R203, the first end of the inductor L202 and the +3.3V power supply, the second end of the capacitor C203 is connected to the power ground, the second end of the resistor R203 and the second end of the inductor L202 are respectively connected to the signal output terminal OUT of the signal amplifier chip U15 and the first end of the inductor L203, and the second end of the inductor L203 is respectively connected. The first end of the capacitor C204 is connected to the first end of the capacitor C204 and the first end of the resistor R202, the second end of the resistor R201 and the second end of the resistor R202 are respectively connected to the first end of the inductor L155, the second end of the inductor L155 is connected to the first end of the capacitor C288, and the second end of the capacitor C288 is connected to the power ground; the second end of the capacitor C204 is connected to the signal input terminal INPUT of the filter chip U14, the ground terminal GND1 of the filter chip U14, the ground terminal GND2 of the filter chip U14 and the ground terminal GND3 of the filter chip U14 are respectively connected to the power ground, the signal output terminal OUTPUT of the filter chip U14 is connected to the first end of the capacitor C233, the second end of the capacitor C233 is respectively connected to the first end of the capacitor C144 and the first end of the inductor L55, the second end of the capacitor C144 is connected to the power ground, and the second end of the inductor L55 is connected to the data signal input terminal of the GPS chip U5. In this embodiment, the capacitance of capacitor C201 is 120pF, the capacitance of capacitor C202 is 1.3pF, the capacitance of capacitor C203 is 1000pF, the capacitance of capacitor C204 is 120pF, the capacitance of capacitor C233 is 22pF, the capacitance of capacitor C144 is 2.7pF, and the capacitance of capacitor C288 is 27pF. The resistances of resistors R201 and R202 are 0Ω, the resistance of resistor R203 is 470Ω, the inductor L201 is 5.6nH, the inductor L202 is 18nH, the inductor L203 is 10nH, and the inductor L155 is 100nH. The model of signal amplifier chip U15 is uPC8231, and the model of filter chip U14 is B7839. This circuit optimizes the processing of received signals and reduces interference caused by environmental factors.

[0140] In a preferred embodiment of the present invention, the antenna state detection unit includes: the emitter of the transistor Q41 is respectively connected to the +3.3V power supply, the first end of the resistor R41 and the first end of the capacitor C48, the second end of the capacitor C48 is connected to the power ground, the second end of the resistor R41 is respectively connected to the base of the transistor Q41 and the collector of the transistor Q42, the emitter of the transistor Q42 is respectively connected to the first end of the capacitor C42, the first end of the capacitor C43 and the power ground, the second end of the capacitor C42, the second end of the capacitor C43 and the transistor. The collector of the transistor Q41 is connected to the first end of the resistor R44, the first end of the resistor R45 and the first end of the capacitor C44 respectively. The second end of the resistor R45 is connected to the emitter of the transistor Q43. The base of the transistor Q43 is connected to the base of the transistor Q44, the collector of the transistor Q43 and the first end of the resistor R46 respectively. The second end of the resistor R46 is connected to the power ground. The second end of the resistor R44 and the second end of the capacitor C44 are connected to the first end of the inductor L41 and the emitter of the transistor Q44 respectively. The collector of the transistor Q44 is connected to the base of the transistor Q44, the collector of the transistor Q43 and the first end of the resistor R46 respectively. The electrodes are respectively connected to the first end of resistor R47 and the first end of resistor R48, and the second end of resistor R47 is connected to the power ground; the second end of resistor R48 is connected to the antenna status detection terminal GPIO8 of the GPS chip U5, the second end of inductor L41 is respectively connected to the first end of capacitor C45, the first end of resistor R49 and the antenna voltage input terminal V_ANT of GPS chip U5, and the second end of resistor R49 is connected to the antenna status detection terminal GPIO11; the base of transistor Q42 is respectively connected to the first end of capacitor C41, the first end of capacitor C46, the first end of resistor R42 and the first end of resistor R43, the second end of capacitor C46 and the second end of resistor R42 are respectively connected to the power ground, the second end of capacitor C41 and the second end of resistor R43 are respectively connected to the antenna feed switch terminal ANT_ON of GPS chip U5; the data receiving terminal RXD of GPS chip U5 is connected to the GPS data sending terminal of diesel generator set controller, and the data sending terminal TXD of GPS chip U5 is connected to the GPS data receiving terminal of diesel generator set controller.In this embodiment, the model of transistor Q41 is BCB57, the model of transistor Q42 is 9014, the model of transistor Q43 and transistor Q44 is 9012, the capacitance value of capacitor C48 is 0.1uF, the capacitance value of capacitor C46 is 100pF, the capacitance value of capacitor C42 is 100pF, the capacitance value of capacitor C43 is 0.1uF, the capacitance value of capacitor C44 is 2.2uF / 6V, and the capacitance value of capacitor C45 is 1uF. The capacitance of capacitor C41 is 0.1uF, the resistance of resistor R41 is 680Ω, the resistance of resistor R42 is 4.7K, the resistance of resistor R43 is 10K, the resistance of resistor R44 is 10Ω, the resistance of resistor R45 is 56Ω, the resistance of resistor R46 is 5.6K, the resistance of resistor R47 is 10K, the resistance of resistor R48 is 0Ω, the inductance of inductor L41 is 33nH, and the model of GPS chip U5 is TH1010. Among them, the power supply terminal VCC of the GPS chip U5 is respectively connected to the +3.3V power supply and the positive electrode of the diode D111, the cathode of the diode D111 and the cathode of the diode D112 are respectively connected to the backup power supply terminal V_BCKP of the GPS chip U5, the positive electrode of the diode D112 is connected to the positive electrode of the button battery J5, and the negative electrode of the button battery J5 is connected to the power ground to prevent the button battery J5 from powering the GPS chip U5 when the external power is cut off. In addition, the diodes D111 and D112 play a unidirectional role in the current flow, thereby preventing the button battery J5 from wasting power.

[0141] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to the embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the claims and their equivalents.

Claims

1. A method for controlling noise in a diesel generator set, comprising the following steps: S1, preparation; S2, diesel generator set working; Step S2 includes the following steps: S2-1, the diesel generator sends a wake-up control command to the mobile noise monitoring terminal. After the mobile noise monitoring terminal receives the wake-up control command sent by the diesel generator, the sensor controller sends a conduction level to the base of its transistor Q1, the base of the transistor Q2, and the base of the transistor Q3, respectively. The transistors Q1, Q2, and Q3 are all in the on state. At this time, the emitter of the transistor Q1 outputs a +5V power supply voltage, the emitter of the transistor Q2 outputs a +3.3V power supply voltage, and the emitter of the transistor Q3 outputs a +1.8V power supply voltage; S2-2, the sensor controller converts the analog noise data into digital noise data through the noise A / D conversion module and inputs it into the sensor controller to realize the collection of noise data; S2-3, the sensor controller calculates the noise display value. The calculation method of the noise display value is: Where n represents the noise display value; K represents the digital noise data collected by the sensor controller; ε1 represents the first magnification, R7 represents the resistance value of resistor R7, and R8 represents the resistance value of resistor R8; ε2 represents the second magnification, R1 represents the resistance value of resistor R1, and R5 represents the resistance value of resistor R5; η represents the noise proportional coefficient; λ represents the noise sensor acquisition error rate, λ∈(0,0.147]; S2-4, transmits the noise display value n to the diesel generator set; S2-5, after receiving the noise display value n sent by the mobile noise monitoring terminal, the diesel generator set sends the received noise display value n to the cloud platform.

2. The noise control method for a diesel generator set according to claim 1 further comprises step S3, determining whether the noise exceeds the standard based on the noise data collected by the mobile noise monitoring terminal: If N≥N0, where N represents the noise value collected, and N0 represents the preset noise threshold; at this time, the noise emitted by the diesel generator set exceeds the standard; If N<N0, the sound emitted by the diesel generator set meets the standard.

3. The noise control method for a diesel generator set according to claim 1, characterized in that: Step S1 includes the following steps: S11, dig a rectangular deep pit with a length, width and depth of Lm, Wm and Dm respectively, where L represents the length of the deep pit, W represents the width of the deep pit, D represents the depth of the deep pit, m represents the length unit of meter, L-L0≥u, W-W0≥u, D-D0≥u, L0 represents the length value of the supporting base plate, W0 represents the width value of the supporting base plate, D0 represents the height value of the diesel generator set, u represents the reserved threshold value, and is a positive number; take 0.75m; that is, a downward concave space (4) set on the ground is obtained; S12, insert the threaded bolt through the through hole and secure it to the support base plate using nut 1, then insert the threaded bolt through the diesel generator set fixing hole on the diesel generator set and secure it to the support plate using nut 2; the diesel generator set and the support base plate are assembled; S13, placing the assembled diesel generator set into the deep pit. After the diesel generator set is placed into the deep pit, the internal thread 1 of the air intake pipe (2) is screwed and connected with the external thread 2 of the connecting piece. The support frame (3) is positioned according to the length of the air intake pipe (2). After the support frame (3) is positioned, the air intake pipe (2) is tied with a tying rope. At this point, the preparation work is completed.

4. The noise control method for a diesel generator set according to claim 1, characterized in that: It also includes setting the distance between the mobile noise monitoring terminal and the diesel generator set, which specifically includes the following steps: S21, placing the mobile noise monitoring terminal at a distance from the diesel generator set of Hmin to Hmax, where Hmin represents the minimum distance between the mobile noise monitoring terminal and the diesel generator set, and Hmax represents the maximum distance between the mobile noise monitoring terminal and the diesel generator set; Hmin <Hmax; S22. For a mobile noise monitoring terminal or a diesel generator set, calculate the distance between the mobile noise monitoring terminal and the diesel generator set. The distance between the mobile noise monitoring terminal and the diesel generator set is calculated as follows: Wherein, I represents the number of times the diesel generator set sends ranging data to the mobile noise monitoring terminal; J represents the number of times the mobile noise monitoring terminal sends distance measurements to the diesel generator set; T i,发 Indicates the time when the i-th group of mobile noise monitoring terminals sends the ranging; T i,接 Indicates the moment when the i-th group of diesel generators receives the ranging signal sent by the mobile noise monitoring terminal; T 发,j Indicates the time when the jth group of mobile noise monitoring terminals sends the ranging; T 接,j Indicates the moment when the jth group of mobile noise monitoring terminals receives the distance measurement sent by the diesel generator set; c represents the transmission speed of electromagnetic waves; φ represents the electromagnetic wave impact factor; φ∈(0,0.115]; H represents the distance between the mobile noise monitoring terminal and the diesel generator set; S23, determine the relationship between H, Hmax, and Hmin: If H<Hmin, the mobile noise monitoring terminal will issue a warning message on the display screen, indicating that the distance between the mobile noise monitoring terminal and the diesel generator set does not meet the placement conditions, and the mobile noise monitoring terminal needs to be further away from the diesel generator set; If H>Hmax, the mobile noise monitoring terminal will issue a warning message on the display screen, indicating that the distance between the mobile noise monitoring terminal and the diesel generator set does not meet the placement conditions, and the mobile noise monitoring terminal needs to be closer to the diesel generator set; If Hmin≤H≤Hmax, a prompt message will be issued on the display screen of the mobile noise monitoring terminal, which prompts that the distance between the mobile noise monitoring terminal and the diesel generator set is appropriate, and the mobile noise monitoring terminal should be placed here.

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