Detection method, detection device, air compressor and storage medium

Abstract

The invention discloses a detection method, a detection device, an air compressor and a storage medium. The detection method is used for the air compressor, the air compressor comprises an air inlet cavity, an air filter part and a pressure sensor, the air filter part is arranged at an air inlet of the air inlet cavity, and the pressure sensor is used for detecting the pressure of the air inlet cavity. The detection method comprises the steps that first pressure and second pressure output by the pressure sensor are obtained before and after the air compressor is started; the air inlet air filter pressure difference of the air compressor is obtained according to the first pressure and the second pressure; under the condition that the air inlet air filtering pressure difference is larger than a preset blocking value, it is determined that the air filtering piece is blocked; and under the condition that the air inlet air filtering pressure difference is smaller than or equal to the preset blocking value, it is determined that the air filtering piece is not blocked. Whether the air filter is blocked or not can be detected through pressure data of one pressure sensor, so that the cost is reduced to a certain extent.

Description

Technical Field

[0001] The present application relates to the technical field of air compressors, and more specifically, to a detection method, a first detection device, a second detection device, an air compressor, and a non-volatile computer-readable storage medium. Background Art

[0002] At present, air compressors are equipped with air filters, which can filter air containing dust and impurities when the air compressor is working, so that the dust and impurities in the air are adsorbed on the air filter. However, when the air compressor runs for a long time, the dust and impurities adsorbed on the air filter will increase, causing the air filter to be blocked. If the air filter is not replaced in time, the air intake of the air compressor will be greatly affected, and the air intake efficiency of the air compressor will be reduced.

[0003] In the related art, the solution for detecting whether the air filter is clogged uses two pressure sensors, which results in high cost. Summary of the invention

[0004] The detection method, first detection device, second detection device, air compressor and non-volatile computer-readable storage medium provided in the embodiments of the present application can be used to solve the technical problem of high cost caused by using two pressure sensors to detect whether the air filter is clogged.

[0005] The detection method of the embodiment of the present application is used for an air compressor, the air compressor includes an air intake chamber, an air filter and a pressure sensor, the air filter is arranged at the air inlet of the air intake chamber, the pressure sensor is used to detect the pressure of the air intake chamber, the detection method includes respectively obtaining a first pressure and a second pressure output by the pressure sensor before and after the start of the air compressor; obtaining an intake air filter pressure difference of the air compressor according to the first pressure and the second pressure; determining that the air filter is blocked when the intake air filter pressure difference is greater than or equal to a preset blockage value; and determining that the air filter is not blocked when the intake air filter pressure difference is less than the preset blockage value.

[0006] In this way, whether the air filter is clogged can be detected through the pressure data of a pressure sensor, thereby reducing costs to a certain extent.

[0007] In some embodiments, the air compressor includes a compressor connected to the air inlet chamber, and obtaining the second pressure includes obtaining the second pressure output by the pressure sensor at preset time intervals when the rotation speed of the compressor reaches a preset rotation speed.

[0008] In this way, after the compressor reaches a preset speed, the airflow can enter the air inlet chamber to change the pressure of the air inlet chamber, so that the pressure sensor can collect the pressure value. By collecting the pressure at a preset time, the pressure change can be determined, and whether the air filter is blocked can be determined based on the change.

[0009] In certain embodiments, the air filter element is determined to be blocked when the intake air filter pressure difference is greater than or equal to a preset blockage value, including determining that the air filter element is blocked when the intake air filter pressure difference is greater than or equal to the preset blockage value for a preset number of consecutive times.

[0010] In this way, by determining that the intake air filter pressure difference is greater than or equal to the preset blockage value for a consecutive preset number of times, it is determined that the air filter is blocked, thereby avoiding the inaccuracy caused by a one-time error.

[0011] In some embodiments, obtaining the intake air filter pressure difference of the air compressor based on the first pressure and the second pressure includes obtaining the intake air filter pressure difference of the air compressor based on the first pressure and an average of the second pressure output within a preset time period.

[0012] In this way, by obtaining the average value of the second pressure output within a preset time period when calculating the intake air filter pressure difference, the accuracy of the calculation can be improved, thereby accurately determining whether the air filter element is clogged.

[0013] In certain embodiments, the air compressor includes an alarm, and the detection method includes, when the intake air filter pressure difference is less than a preset warning value, determining that the first level of the air filter is not blocked and controlling the air compressor to operate normally; when the intake air filter pressure difference is greater than or equal to the preset warning value and less than the preset blockage value, determining that the second level of the air filter is not blocked and controlling the alarm to issue a warning message; when the intake air filter pressure difference is greater than or equal to the preset blockage value, determining that the air filter is blocked and controlling the alarm to issue a fault message.

[0014] In this way, by providing an alarm in the air compressor, an alarm can be issued when the air filter is about to be blocked or has been blocked, so that the air filter can be replaced in time, the air intake efficiency of the air compressor can be improved, and damage to the air compressor can be avoided.

[0015] In certain embodiments, the detection method includes controlling the air compressor to shut down if it is determined that the air filter element is clogged.

[0016] In this way, when it is determined that the air filter is clogged, the air compressor can be prevented from being damaged by controlling the air compressor to stop.

[0017] The first detection device of the embodiment of the present application is used for an air compressor, and the first detection device includes a first acquisition module, a second acquisition module, a first determination module, and a second determination module. The first acquisition module is used to respectively acquire the first pressure and the second pressure output by the pressure sensor before and after the air compressor is started; the second acquisition module is used to acquire the intake air filter pressure difference of the air compressor according to the first pressure and the second pressure; the first determination module is used to determine that the air filter is blocked when the intake air filter pressure difference is greater than or equal to a preset blockage value; the second determination module is used to determine that the air filter is not blocked when the intake air filter pressure difference is less than the preset blockage value.

[0018] The second detection device of the embodiment of the present application includes a processor, a memory; and a computer program, wherein the computer program is stored in the memory and executed by the processor, and the computer program includes instructions for executing the detection method described in any one of the above embodiments.

[0019] The air compressor of the embodiment of the present application includes the first detection device or the second detection device described in any one of the above embodiments.

[0020] The non-volatile computer-readable storage medium containing a computer program according to an embodiment of the present application, when the computer program is executed by a processor, enables the processor to execute the detection method described in any one of the above embodiments.

[0021] Additional aspects and advantages of the embodiments of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the embodiments of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0023] Figure 1 is a schematic diagram of the structure of an air compressor according to some embodiments of the present application;

[0024] Figure 2 is a schematic flow chart of a detection method according to certain embodiments of the present application;

[0025] Figure 3 is a schematic flow chart of a detection method according to certain embodiments of the present application;

[0026] Figure 4 is a schematic flow chart of a detection method according to certain embodiments of the present application;

[0027] Figure 5 is a schematic flow chart of a detection method according to certain embodiments of the present application;

[0028] Figure 6 is a schematic flow chart of a detection method according to certain embodiments of the present application;

[0029] Figure 7 is a schematic flow chart of a detection method according to certain embodiments of the present application;

[0030] Figure 8 is a schematic diagram of a module of a first detection device in certain embodiments of the present application;

[0031] Fig. 9 It is a schematic diagram of the connection status of a non-volatile computer-readable storage medium and a processor in certain embodiments of the present application.

[0032] Description of Figure Numbers:

[0033] 100. air compressor; 20. air inlet chamber; 21. air inlet; 30. air filter; 40. pressure sensor; 50. compressor; 60. alarm; 10. first detection device; 11. first acquisition module; 12. second acquisition module; 13. first determination module; 14. second determination module; 15. first control module; 16. second control module; 17. third control module; 70. second detection device; 71. processor; 72. memory; 721. computer program; 200. non-volatile computer-readable storage medium. DETAILED DESCRIPTION

[0034] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals represent the same or similar elements or elements having the same or similar functions from beginning to end. The embodiments described below with reference to the accompanying drawings are optional and are only used to explain the embodiments of the present application, and cannot be understood as limiting the embodiments of the present application.

[0035] During the operation of the air compressor, it is necessary to detect whether the air filter of the air compressor is clogged to avoid damage to the air compressor caused by the clogged air filter, and the clogged air filter affects the intake efficiency. Among them, the ambient atmospheric pressure and the intake air filter pressure difference are important parameters for detecting whether the air filter of the air compressor is clogged. For example, the ambient atmospheric pressure can be used to calculate the intake and exhaust pressure ratio of the air compressor. According to the intake and exhaust pressure ratio, the intake air filter pressure difference can be calculated, and the intake air filter pressure difference can be used as a measure of the blockage of the air filter of the air compressor. Therefore, a pressure sensor is needed to measure the ambient atmospheric pressure and the intake air filter pressure difference.

[0036] In the related art, there are three schemes for measuring the ambient atmospheric pressure and the intake air filter pressure difference. Scheme 1 is to set an absolute pressure sensor on the air compressor to measure the ambient atmospheric pressure, and then set an absolute pressure sensor to measure the suction pressure after the intake air filter, so as to calculate the intake air filter pressure difference according to the reading difference of the two absolute pressure sensors, so as to obtain two pressure values ​​of the ambient atmospheric pressure and the intake air filter pressure difference. However, this scheme requires two absolute pressure sensors, which is relatively expensive.

[0037] Solution 2 is to install an absolute pressure sensor on the air compressor to measure the ambient atmospheric pressure, and then install a differential pressure sensor to directly measure the intake air filter pressure difference. In this way, two pressure values ​​of the ambient atmospheric pressure and the intake air filter pressure difference are obtained. However, this solution requires the use of an absolute pressure sensor and a differential pressure sensor, which is more expensive.

[0038] Solution 3 is to manually input a fixed value as the ambient atmospheric pressure value, and then use a differential pressure sensor to directly measure the intake air filter pressure difference, so as to obtain two pressure values ​​of ambient atmospheric pressure and intake air filter pressure difference. However, in this solution, each air compressor needs to manually input the ambient atmospheric pressure value corresponding to the local environment when it goes to different regions, and the ambient atmospheric pressure value is not fixed at the same location in the same region. The ambient atmospheric pressure will also change when different weather conditions change, resulting in the ambient atmospheric pressure value obtained by the air compressor not matching the current actual value, and the data distortion will affect the calculation of the intake and exhaust pressure ratio.

[0039] Therefore, in order to solve the above technical problems, an embodiment of the present application provides a detection method.

[0040] See also Figure 1 and Figure 2 The detection method of the embodiment of the present application is used for an air compressor 100. The air compressor 100 includes an air inlet cavity 20, an air filter 30 and a pressure sensor 40. The air filter 30 is disposed at an air inlet 21 of the air inlet cavity 20. The pressure sensor 40 is used to detect the pressure of the air inlet cavity 20. The detection method includes:

[0041] Step 011: Obtaining a first pressure and a second pressure output by the pressure sensor 40 before and after the air compressor 100 is started;

[0042] Step 012: Obtaining the intake air filter pressure difference of the air compressor 100 according to the first pressure and the second pressure;

[0043] Step 013: When the intake air filter pressure difference is greater than or equal to the preset blockage value, it is determined that the air filter element 30 is blocked;

[0044] Step 014: When the intake air filter pressure difference is less than the preset blockage value, it is determined that the air filter element 30 is not blocked.

[0045] In this way, whether the air filter 30 is clogged can be detected through the pressure data of a pressure sensor 40, thereby reducing the cost to a certain extent.

[0046] Among them, the air compressor 100 is a mechanical device for compressing air. The air compressor 100 converts the air in the atmosphere into high-pressure air by compressing and storing it. The air compressor 100 includes an air inlet chamber 20, an air filter 30 and a pressure sensor 40. The air inlet chamber 20 allows the outside air to enter the air compressor 100; the air filter 30 is usually arranged at the air inlet 21 of the air inlet chamber 20. The air filter 30 can efficiently filter the ambient air before entering the air compressor 100 to remove impurities such as dust, particulate matter, moisture and oil mist carried in the ambient air. It is prevented that the untreated ambient air directly enters the air compressor 100, which seriously affects the performance and service life of the equipment. The pressure sensor 40 is arranged in the air inlet chamber 20. For example, the pressure sensor 40 can be arranged behind the air filter 30 close to the side of the air inlet chamber 20. The pressure sensor 40 can be an absolute pressure sensor 40, so that the pressure sensor 40 can be used to detect the pressure of the air inlet chamber 20.

[0047] The air compressor 100 includes a detection device. Figure 1 In the embodiment, the detection device is a second detection device, and the second detection device includes a processor 71 and a memory 72. The processor 71 may be a microcontroller unit, the memory 72 may store a computer program 721 including instructions for executing the detection method, and the processor 71 may execute the computer program 721 including instructions for executing the detection method.

[0048] Specifically, after the air compressor 100 is installed in the working area, the processor 71 can control the pressure sensor 40 to measure the pressure of the air inlet chamber 20 before the air compressor 100 is started. At this time, the air inlet chamber 20 is connected to the environment through the air filter 30, so that the pressure of the air inlet chamber 20 is the ambient atmospheric pressure, and then the processor 71 can obtain the first pressure of the environment in which the air compressor 100 is located, and store the value of the first pressure in the memory 72. After the air compressor 100 is started, the processor 71 controls the pressure sensor 40 to measure the pressure of the air inlet chamber 20. At this time, the air compressor 100 is working, and the ambient air can be sucked into the air inlet chamber 20 through the air filter 30. The pressure of the air inlet chamber 20 is changed, so that the processor 71 can obtain the second pressure of the ambient air entering the air inlet chamber 20 through the air filter 30, and store the value of the second pressure in the memory 72.

[0049] After obtaining the values ​​of the first pressure and the second pressure, the processor 71 can calculate the first pressure and the second pressure through subtraction operation, so as to obtain the intake air filter pressure difference of the air compressor 100. The intake air filter pressure difference of the air compressor 100 calculated at the current moment can indicate the blockage condition of the air filter 30 at the current moment, so by obtaining the intake air filter pressure difference at different moments, the blockage condition of the air filter 30 at different moments can be obtained.

[0050] After obtaining the current intake air filter pressure difference, the processor 71 can compare the current intake air filter pressure difference with the preset blockage value input into the memory 72 in advance, so that according to the compared size, the processor 71 can determine whether the air filter 30 is blocked.

[0051] When the processor 71 determines that the current air filter pressure difference is greater than or equal to the preset blockage value, it can determine that the air filter 30 is blocked at the current moment, and the processor 71 needs to notify the user to replace the air filter 30. When the processor 71 determines that the current air filter pressure difference is less than the preset blockage value, it can determine that the air filter 30 is not blocked at the current moment, and the air compressor 100 can continue to work. The processor 71 continues to control the pressure sensor 40 to detect the pressure of the air intake chamber 20 to obtain the second pressure at the next moment.

[0052] See also Figure 2 and Figure 3 In some embodiments, the air compressor 100 includes a compressor 50, the compressor 50 is connected to the air inlet chamber 20, and step 011: obtaining the second pressure includes:

[0053] Step 0111: When the rotation speed of the compressor 50 reaches a preset rotation speed, the second pressure output by the pressure sensor 40 is obtained at preset time intervals.

[0054] In this way, after the compressor 50 reaches the preset speed, the air flow can enter the air inlet chamber 20 to change the pressure of the air inlet chamber 20, so that the pressure sensor 40 can collect the pressure value. By collecting the pressure at every preset time, the pressure change can be determined, and whether the air filter 30 is blocked can be determined based on the change.

[0055] Specifically, the air compressor 100 includes a compressor 50, which can compress the air sucked into the air intake chamber 20. The compressor 50 includes piston type, screw type, vane type, centrifugal type and axial flow type. The piston compressor 50 compresses the gas through the reciprocating motion of the piston in the cylinder. When the piston moves to the right, the volume in the cylinder increases, the pressure decreases, and the outside air enters the cylinder through the filter. As the piston moves to the left, the volume in the cylinder decreases, the pressure increases, and finally the compressed air is discharged.

[0056] The screw compressor 50 uses two rotating screw rotors, the main and auxiliary, to work. Its air intake side is designed as a compression chamber that can fully inhale air, and there is no inlet and outlet valve group. As the rotors rotate, the tooth slot space of the main and auxiliary rotors gradually shrinks, achieving the compression and discharge of ambient air.

[0057] The vane compressor 50 is directly driven at a very low speed. The rotor is the only continuously running part. It has several slots cut along its length, in which the vanes that slide on the oil film are inserted. The rotor rotates in the stator of the cylinder, and the centrifugal force pushes the vanes to the cylinder wall, forming a pressure chamber for compression.

[0058] The centrifugal compressor 50 is mainly composed of two parts: a rotor and a stator. When the impeller rotates at high speed, the gas is thrown into the diffuser behind it under the action of centrifugal force, and a vacuum zone is formed at the impeller, and fresh gas from the outside enters the impeller. The impeller rotates continuously, and the gas is continuously sucked in and thrown out, thereby maintaining the continuous flow of the gas.

[0059] The axial flow compressor 50 is similar to the centrifugal compressor 50, but has a different structure. It is mainly used for large-scale air compression, and the gas is compressed in the axial direction through the rotation of the rotor.

[0060] After the compressor 50 runs for a period of time, when the speed of the compressor 50 reaches a preset speed, the pressure of the air inlet chamber 20 changes greatly compared with the ambient atmospheric pressure. At this time, the processor 71 controls the pressure sensor 40 to detect the pressure of the air inlet chamber 20, and the second pressure at the current moment can be obtained. Then, the processor 71 controls the pressure sensor 40 to detect the pressure of the air inlet chamber 20 at every preset time, so as to obtain the second pressure at different moments.

[0061] For example, after the compressor 50 runs for a period of time, when the speed of the compressor 50 reaches 5,000 revolutions per second or 10,000 revolutions per second, the pressure of the air inlet chamber 20 changes greatly compared with the ambient atmospheric pressure. At this time, the processor 71 controls the pressure sensor 40 to detect the pressure of the air inlet chamber 20, and the second pressure at the current moment can be obtained. Then, the processor 71 controls the pressure sensor 40 to detect the pressure of the air inlet chamber 20 every 1 second, 2 seconds, or 3 seconds, so as to obtain the second pressure at different moments.

[0062] See also Figure 4 In some embodiments, step 013: when the air filter pressure difference is greater than or equal to a preset blockage value, determining that the air filter element 30 is blocked includes:

[0063] Step 0131: When the intake air filter pressure difference is greater than or equal to the preset blockage value for a preset number of consecutive times, it is determined that the air filter element 30 is blocked.

[0064] In this way, by determining that the intake air filter pressure difference is greater than or equal to the preset blockage value for a consecutive preset number of times, it is determined that the air filter 30 is blocked, thereby avoiding the inaccuracy caused by a one-time error.

[0065] Specifically, since the pressure sensor 40 may have errors or faults during operation, when the processor 71 controls the pressure sensor 40 to detect the intake chamber 20 at the current moment, the intake air filter pressure difference calculated by the second pressure and the first pressure is greater than or equal to the preset blockage value, but at the next moment, the intake air filter pressure difference calculated by the processor 71 is less than the preset blockage value, so that it can be judged that the air filter 30 at the current moment is not blocked. Therefore, the processor 71 needs to calculate that the intake air filter pressure difference is greater than or equal to the preset blockage value for a continuous and preset number of times, and then determine that the air filter 30 is blocked. For example, the processor 71 needs to calculate that the intake air filter pressure difference is greater than or equal to the preset blockage value for a continuous and preset number of times, which can be 3 times, 4 times or 5 times, and then determine that the air filter 30 is blocked.

[0066] See also Figure 5 In some embodiments, step 012: obtaining the intake air filter pressure difference of the air compressor 100 according to the first pressure and the second pressure includes:

[0067] Step 0121: Obtain the intake air filter pressure difference of the air compressor 100 according to the first pressure and the average of the second pressure output within a preset time period.

[0068] In this way, by obtaining the average value of the second pressure output within a preset time period when calculating the intake air filter pressure difference, the accuracy of the calculation can be improved, thereby accurately determining whether the air filter 30 is clogged.

[0069] Specifically, since the air filter 30 continuously absorbs impurities during operation, causing the air filter 30 to be clogged, when the pressure sensor 40 detects the pressure of the air intake chamber 20, the second pressure obtained is not accurate enough, thereby affecting the accuracy of the intake air filter pressure difference calculation. Therefore, when obtaining the second pressure, the processor 71 obtains multiple second pressures output by the pressure sensor 40 within a preset time period, and performs an average operation based on the values ​​of the multiple second pressures, so as to determine the second pressure within the preset time period. For example, the preset time period can be 3 seconds, 4 seconds or 5 seconds, etc. The processor 71 obtains multiple second pressures within 3 seconds, 4 seconds or 5 seconds, and calculates the average of the multiple second pressures within 3 seconds, 4 seconds or 5 seconds, so as to obtain the second pressure at any time within 3 seconds, 4 seconds or 5 seconds.

[0070] According to the average value of the second pressure within the preset time period, the accuracy of the intake air filter pressure difference calculated within the preset time period can be improved, thereby improving the accuracy of determining whether the air filter element 30 is clogged.

[0071] See also Figure 2 and Figure 6 In some embodiments, the air compressor 100 includes an alarm 60, and the detection method includes:

[0072] Step 015: When the air filter pressure difference is less than the preset warning value, it is determined that the first level of the air filter element 30 is not blocked, and the air compressor 100 is controlled to work normally;

[0073] Step 016: When the intake air filter pressure difference is greater than or equal to the preset warning value and less than the preset blockage value, it is determined that the air filter element 30 is not blocked at the second level, and the alarm 60 is controlled to issue a warning message;

[0074] Step 017: When the intake air filter pressure difference is greater than or equal to the preset blockage value, it is determined that the air filter 30 is blocked, and the alarm 60 is controlled to issue a fault message.

[0075] In this way, by providing an alarm 60 in the air compressor 100, the air filter 30 can send out an alarm when it is about to be blocked or has been blocked, so that the air filter 30 can be replaced in time, the air intake efficiency of the air compressor 100 can be improved, and the air compressor 100 can be prevented from being damaged.

[0076] Specifically, the air compressor 100 includes an alarm 60, which can issue a warning message or a fault phenomenon when the air filter 30 is blocked, so as to remind the user to replace the air filter 30 in time. The alarm 60 can be a voice playback device, an alarm light or a buzzer, etc., and the air compressor 100 is provided with a preset warning value. When the air intake air filter pressure difference is less than the preset warning value, the processor 71 can determine that the air filter 30 is in a first-level unblocked state, which indicates that the air filter 30 has good permeability, and the processor 71 can control the air compressor 100 to work normally.

[0077] When the processor 71 detects that the intake air filter pressure difference is greater than or equal to the preset warning value and less than the preset blockage value, the processor 71 can determine that the air filter 30 is in the secondary unblocked state, which indicates that the air filter 30 is in a slightly blocked state. The processor 71 can control the alarm 60 to issue a warning message to remind the user that the air filter 30 is in a slightly blocked state at this time and the air filter 30 needs to be cleaned or replaced.

[0078] For example, the preset warning value is 1 kPa, the preset blockage value is 2 kPa, and when the processor 71 detects that the intake air filter pressure difference is 1.5 kPa, and the alarm 60 is a voice playback device, when the processor 71 detects that the intake air filter pressure difference is greater than or equal to the preset warning value and less than the preset blockage value, it can control the alarm 60 to issue a warning message "The air filter 30 is about to be blocked, please clean or replace it in time".

[0079] The preset warning value is 1 kPa, and the preset blockage value is 2 kPa. When the processor 71 detects that the intake air filter pressure difference is 1.5 kPa and the alarm 60 is an alarm light, when the processor 71 detects that the intake air filter pressure difference is greater than or equal to the preset warning value and less than the preset blockage value, it can control the alarm light to flash regularly or control the alarm light to be always on as a warning message.

[0080] The preset warning value is 1 kPa, and the preset blockage value is 2 kPa. When the processor 71 detects that the intake air filter pressure difference is 1.5 kPa and the alarm 60 is a buzzer, the processor 71 can control the buzzer to emit a "buzzing" sound, intermittent beeping sound or other specific frequency sound warning information when it detects that the intake air filter pressure difference is greater than or equal to the preset warning value and less than the preset blockage value.

[0081] When the processor 71 detects that the intake air filter pressure difference is greater than the preset blockage value, it can control the alarm 60 to send a fault message to remind the user that the air filter 30 is in a blocked state and the air filter 30 needs to be cleaned or replaced.

[0082] For example, the preset blockage value is 2 kPa. When the processor 71 detects that the intake air filter pressure difference is 4 kPa, and the alarm 60 is a voice playback device, the processor 71 can control the alarm 60 to issue a fault message "The air filter 30 is blocked, please clean or replace it in time" when it detects that the intake air filter pressure difference is greater than the preset blockage value.

[0083] The preset blockage value is 2 kPa. When the processor 71 detects that the intake air filter pressure difference is 4 kPa and the alarm 60 is an alarm light, the processor 71 can control the alarm light to flash regularly or control the alarm light to be always on when it detects that the intake air filter pressure difference is greater than the preset blockage value. The alarm light needs to emit different lights depending on whether it receives a fault message or a warning message. For example, when the alarm light needs to send a warning message, the alarm light emits a regular flashing light; when the alarm light needs to send a fault message, the alarm light emits a always-on light.

[0084] The preset blockage value is 2 kPa. When the processor 71 detects that the intake air filter pressure difference is 4 kPa and the alarm 60 is a buzzer, the processor 71 can control the buzzer to emit a "buzzing" sound, intermittent beeping sound or other specific frequency sound fault information when it detects that the intake air filter pressure difference is greater than the preset blockage value. The buzzer needs to emit different sounds depending on whether it is a fault message or a warning message. For example, when the buzzer needs to send a warning message, the buzzer sends a short and regular buzzing sound; when the buzzer needs to send a fault message, the buzzer sends a long buzzing sound.

[0085] See also Figure 7 In certain embodiments, the detection method comprises:

[0086] Step 018: When it is determined that the air filter 30 is clogged, the air compressor 100 is controlled to shut down.

[0087] In this way, when it is determined that the air filter 30 is clogged, the air compressor 100 can be stopped to avoid damage to the air compressor 100 .

[0088] Specifically, the processor 71 can control the air compressor 100 to shut down when it is determined that the air filter 30 is blocked. For example, when the processor 71 detects that the air filter pressure difference is greater than the preset blockage value, the processor 71 issues an instruction to "cut off the power supply of the air compressor", and before preparing to shut down, the load of the air compressor 100 should be gradually reduced to avoid mechanical shock caused by sudden shutdown, which helps to protect the mechanical components inside the air compressor 100 and extend the service life of the equipment. Close the unloading valve or open the oil-water discharge valve of each level of cooler and oil-water separator to reduce the pressure inside the air compressor 100. Open the air discharge valve (if equipped) to further discharge compressed air to ensure that there is no residual pressure inside the air compressor 100. Release the compressed air at the final exhaust pipe to prevent gas reflux after shutdown or cause safety hazards. After confirming that the internal pressure of the air compressor 100 has dropped to a safe range, cut off the power supply of the motor to stop the air compressor 100, ensure that the power supply is completely cut off, and avoid damage to electrical components due to long-term standby.

[0089] See also Figure 8 In order to facilitate better implementation of the detection method of the embodiment of the present application, the embodiment of the present application also provides a first detection device 10. Among them, the first detection device 10 is used for the air compressor 100, and the first detection device 10 includes a first acquisition module 11, a second acquisition module 12, a first determination module 13 and a second determination module 14. The first acquisition module 11 is used to respectively obtain the first pressure and the second pressure output by the pressure sensor 40 before and after the air compressor 100 is started; the second acquisition module 12 is used to obtain the intake air filter pressure difference of the air compressor 100 according to the first pressure and the second pressure; the first determination module 13 is used to determine that the air filter 30 is blocked when the intake air filter pressure difference is greater than or equal to the preset blockage value; the second determination module 14 is used to determine that the air filter 30 is not blocked when the intake air filter pressure difference is less than the preset blockage value.

[0090] The first acquisition module 11 is specifically configured to acquire the second pressure output by the pressure sensor 40 at preset time intervals when the rotation speed of the compressor 50 reaches a preset rotation speed.

[0091] The first determination module 13 is specifically configured to determine that the air filter 30 is clogged when the intake air filter pressure difference is greater than or equal to a preset blockage value for a consecutive preset number of times.

[0092] The second acquisition module 12 is specifically used to acquire the intake air filter pressure difference of the air compressor 100 according to the first pressure and the average value of the second pressure output within a preset time period.

[0093] In one embodiment, the first detection device 10 further includes a first control module 15, which is used to control the alarm 60 to issue a warning message when the intake air filter pressure difference is greater than or equal to a preset warning value and less than a preset blockage value;

[0094] In one embodiment, the first detection device 10 further includes a second control module 16, and the second control module 16 is used to control the alarm 60 to issue a fault message when the intake air filter pressure difference is greater than a preset blockage value.

[0095] In one embodiment, the first detection device 10 further includes a third control module 17. The third control module 17 is used to control the air compressor 100 to shut down when it is determined that the air filter 30 is clogged.

[0096] In some embodiments, the first detection device 10 may be disposed in the air compressor 100 , so as to implement the functions of the first acquisition module 11 , the second acquisition module 12 , the first determination module 13 , and the second determination module 14 in the air compressor 100 .

[0097] In one embodiment, the detection device of the air compressor can also be the first detection device. The first detection device 10 is described above from the perspective of a functional module in conjunction with the accompanying drawings. The functional module can be implemented in hardware form, can be implemented by instructions in software form, or can be implemented by a combination of hardware and software modules. Specifically, the steps of the method embodiment in the embodiment of the present invention can be completed by the hardware integrated logic circuit and / or software instructions in the processor 71, and the steps of the method disclosed in the embodiment of the present invention can be directly embodied as a hardware coding processor to execute, or can be executed by a combination of hardware and software modules in the coding processor. Optionally, the software module can be located in a mature storage medium in the field such as a random access memory, a flash memory, a read-only memory, a programmable read-only memory, an electrically erasable programmable memory, a register, etc. The storage medium is located in the memory 72, and the processor 71 reads the information in the memory 72, and completes the steps in the above method embodiment in conjunction with its hardware.

[0098] Please refer again Figure 1 The second detection device 70 of the embodiment of the present application includes a processor 71, a memory 72 and a computer program 721, wherein the computer program 721 is stored in the memory 72 and executed by the processor 71, and the computer program 721 includes instructions for executing the detection method of any of the above-mentioned embodiments, which will not be repeated here for the sake of brevity.

[0099] See also Fig. 9The embodiment of the present application also provides a non-volatile computer-readable storage medium 200 including a computer program 721. When the computer program 721 is executed by the processor 71, the processor 71 executes the detection method of any one of the above-mentioned embodiments. For the sake of brevity, it will not be repeated here.

[0100] In the description of this specification, the descriptions with reference to the terms "certain embodiments", "in an example", "exemplarily", etc., mean that the specific features, structures, materials or characteristics described in conjunction with the embodiments or examples are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, unless they are contradictory.

[0101] Any process or method description in a flowchart or otherwise described herein may be understood to represent a module, segment or portion of code that includes one or more executable instructions for implementing the steps of a specific logical function or process, and the scope of the preferred embodiments of the present application includes alternative implementations in which functions may not be performed in the order shown or discussed, including performing functions in a substantially simultaneous manner or in the reverse order depending on the functions involved, which should be understood by technicians in the technical field to which the embodiments of the present application belong.

[0102] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are optional and cannot be understood as limitations to the present application. A person skilled in the art can change, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. A detection method for an air compressor, the air compressor comprising an air intake chamber, an air filter and a pressure sensor, the air filter being arranged at an air inlet of the air intake chamber, the pressure sensor being used to detect the pressure of the air intake chamber, characterized in that: The detection method comprises: Acquire a first pressure and a second pressure output by the pressure sensor before and after the air compressor is started; Acquire the intake air filter pressure difference of the air compressor according to the first pressure and the second pressure; When the air filter pressure difference is greater than or equal to a preset blockage value, determining that the air filter is blocked; When the intake air filter pressure difference is less than the preset blockage value, it is determined that the air filter element is not blocked.

2. The detection method according to claim 1, characterized in that: The air compressor includes a compressor, the compressor is connected to the air inlet cavity, and obtaining the second pressure includes: When the rotation speed of the compressor reaches a preset rotation speed, the second pressure output by the pressure sensor is acquired at preset time intervals.

3. The detection method according to claim 1, characterized in that: When the intake air filter pressure difference is greater than or equal to a preset blockage value, determining that the air filter is blocked includes: When the intake air filter pressure difference is greater than or equal to the preset blockage value for a consecutive preset number of times, it is determined that the air filter element is blocked.

4. The detection method according to claim 1, characterized in that: The obtaining the intake air filter pressure difference of the air compressor according to the first pressure and the second pressure includes: The intake air filter pressure difference of the air compressor is obtained according to the first pressure and the average of the second pressure output within a preset time period.

5. The detection method according to claim 1, characterized in that: The air compressor includes an alarm, and the detection method includes: When the air intake air filter pressure difference is less than the preset warning value, it is determined that the first level of the air filter is not blocked, and the air compressor is controlled to work normally; When the intake air filter pressure difference is greater than or equal to the preset warning value and less than the preset blockage value, it is determined that the second level of the air filter is not blocked, and the alarm is controlled to issue a warning message; When the intake air filter pressure difference is greater than or equal to the preset blockage value, it is determined that the air filter is blocked, and the alarm is controlled to issue a fault message.

6. The detection method according to claim 1, characterized in that: The detection method comprises: When it is determined that the air filter is clogged, the air compressor is controlled to stop.

7. A first detection device, characterized in that: Used for an air compressor, the air compressor includes an air filter, and the detection device includes: A first acquisition module, used for respectively acquiring a first pressure and a second pressure output by a pressure sensor before and after the air compressor is started; A second acquisition module, configured to acquire an intake air filter pressure difference of the air compressor according to the first pressure and the second pressure; A first determination module, configured to determine that the air filter is clogged when the intake air filter pressure difference is greater than or equal to a preset clog value; The second determination module is used to determine that the air filter element is not blocked when the intake air filter pressure difference is less than the preset blockage value.

8. A second detection device, characterized in that: include: Processor, memory; and A computer program, wherein the computer program is stored in the memory and executed by the processor, and the computer program includes instructions for executing the detection method according to any one of claims 1 to 6.

9. An air compressor, characterized in that: Includes the first detection device according to claim 7 or the second detection device according to claim 8.

10. A non-volatile computer-readable storage medium comprising a computer program, wherein when the computer program is executed by a processor, the processor executes the detection method according to any one of claims 1 to 6.

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