CN110779671A - Monitoring system and monitoring method for mechanical refrigerator service life test device - Google Patents
Monitoring system and monitoring method for mechanical refrigerator service life test device Download PDFInfo
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- CN110779671A CN110779671A CN201911147464.4A CN201911147464A CN110779671A CN 110779671 A CN110779671 A CN 110779671A CN 201911147464 A CN201911147464 A CN 201911147464A CN 110779671 A CN110779671 A CN 110779671A
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- 238000012360 testing method Methods 0.000 title claims abstract description 33
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- 238000012545 processing Methods 0.000 claims abstract description 11
- 230000005540 biological transmission Effects 0.000 claims description 14
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M7/00—Vibration-testing of structures; Shock-testing of structures
- G01M7/02—Vibration-testing by means of a shake table
- G01M7/025—Measuring arrangements
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
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Abstract
The invention discloses a monitoring system and a monitoring method for a mechanical refrigerator service life test device. The service life test device belongs to the technical field of service life test detection devices of mechanical refrigerators, and can detect service life tests of the mechanical refrigerators in batches through change of ringtones. The wireless laser device comprises a computer, a shell and a first laser lamp, wherein a wireless module, a memory, a data processing module and a controller are respectively arranged in the shell, a support is arranged on the upper surface of the shell, and a universal rotating mechanism is arranged on the support; vibration sounders which can make sound by vibration are fixedly arranged at three different positions on the outer surface of the mechanical refrigerator respectively; the support located right of the universal rotating mechanism is provided with a vertical plate facing the universal rotating mechanism, the left surface of the vertical plate is provided with a plurality of photoelectric sensors, and each photoelectric sensor is connected with the controller.
Description
Technical Field
The invention relates to the technical field of a service life test detection device of a mechanical refrigerator, in particular to a monitoring system and a monitoring method of the service life test device of the mechanical refrigerator.
Background
At present, the service life test detection of a mechanical refrigerator is generally to start up one mechanical refrigerator, then let a person observe whether the mechanical refrigerator is still running at any time, and if the mechanical refrigerator stops running, the service life of the mechanical refrigerator is ended. However, when the mechanical refrigerator stops rotating, the staff sometimes cannot record the time. For example, if the mechanical refrigerator stops running during the leaving time, no record is recorded.
Disclosure of Invention
The invention provides a mechanical refrigerator life test device monitoring system and a monitoring method thereof, which can detect the life test of mechanical refrigerators in batches through the change of ring tones and have simple structure and convenient use, in order to solve the defects that the life test detection of the mechanical refrigerators still needs a manual recording method to detect.
The technical problem is solved by the following technical scheme:
the monitoring system of the mechanical refrigerator service life test device comprises a computer, a shell and a first laser lamp, wherein a wireless module, a memory, a data processing module and a controller are respectively arranged in the shell, a support is arranged on the upper surface of the shell, and a universal rotating mechanism is arranged on the support; vibration sounders which can make sound by vibration are fixedly arranged at three different positions on the outer surface of the mechanical refrigerator respectively; a vertical plate facing the universal rotating mechanism is arranged on the support positioned right of the universal rotating mechanism, a plurality of photoelectric sensors are arranged on the left surface of the vertical plate, and each photoelectric sensor is connected with the controller; the two-dimensional coordinates of each photosensor are stored in a memory; the origin O of the two-dimensional coordinates is positioned on the universal rotating mechanism; the left pipe orifice of one right pipe is fixedly connected to the right surface of the universal rotating mechanism, and a second laser lamp capable of irradiating light on the left surface of the vertical plate is arranged in the right pipe; the control end of the second laser lamp is connected with the controller; five sound measuring tubes are arranged on the universal rotating mechanism, the five sound measuring tubes are equal in length, the diameters of tube holes are equal, and tube axes are parallel to each other; the front end surfaces of the five sound measuring tubes are also in the same vertical plane; the first sound measuring tube of the five sound measuring tubes is arranged right above the fifth sound measuring tube, and the second sound measuring tube is arranged right below the fifth sound measuring tube; the third sound measuring tube is arranged right to the left of the fifth sound measuring tube, and the fourth sound measuring tube is arranged right to the fifth sound measuring tube; the first sound measuring tube and the second sound measuring tube are arranged in a left-right symmetrical mode relative to the fifth sound measuring tube, and the third sound measuring tube and the fourth sound measuring tube are also arranged in a left-right symmetrical mode relative to the fifth sound measuring tube; a sound sensor is respectively arranged in the fifth sound measuring tube, the first sound measuring tube, the second sound measuring tube, the third sound measuring tube and the fourth sound measuring tube, the first laser lamp is also arranged in the fifth sound measuring tube, and the central line of the light emitted by the first laser lamp and the central line of the fifth sound measuring tube are on the same straight line; the control end of the universal rotating mechanism, the control end of the first laser lamp, the wireless module, the memory, the data processing module and each sound sensor are respectively connected with the controller; the controller is in wireless connection with the computer through the wireless module.
The wireless module can enable the monitoring system of the mechanical refrigerator service life testing device to be wirelessly connected with an external computer or an intelligent terminal, and control and management of the monitoring system of the mechanical refrigerator service life testing device are facilitated.
Firstly, placing a plurality of mechanical refrigerators respectively provided with vibration sounders on the left side in an experimental room with a sound insulation function; then the monitoring system of the mechanical refrigerator life test device is arranged on the right side in the experiment room;
firstly, placing a plurality of mechanical refrigerators respectively provided with vibration sounders on the left side in an experimental room with a sound insulation function; then the monitoring system of the mechanical refrigerator life test device is arranged on the right side in the experiment room;
then, simultaneously starting each mechanical refrigerator to be placed at the time T0;
then, simultaneously starting the sound sensors in the first sound measuring pipe, the second sound measuring pipe, the third sound measuring pipe and the fourth sound measuring pipe, and uploading the ring information detected by each sound sensor at the same moment to the controller;
then the data processing module compares the intensity of the ring tone of each uploaded ring tone information and calculates the vibration frequency, if the intensity of the ring tone A1 detected by the sound sensor in the first sound tube is greater than or less than the intensity of the ring tone A2 detected by the sound sensor in the second sound tube, the controller controls the universal rotating mechanism to rotate towards the right or left until the intensity of the ring tone detected by the sound sensor in the first sound tube is equal to the intensity of the ring tone detected by the sound sensor in the second sound tube; similarly, if the intensity A3 of the ring tone detected by the sound sensor in the third sound tube is greater than or less than the intensity a4 of the ring tone detected by the sound sensor in the fourth sound tube, the controller controls the universal rotating mechanism to rotate to the right or to the left until the intensity of the ring tone detected by the sound sensor in the third sound tube is equal to the intensity of the ring tone detected by the sound sensor in the fourth sound tube;
when a1= a2= A3= a4, stopping the rotation of the universal rotation mechanism; then, starting a sound sensor in a fifth sound measuring tube to measure the ring intensity A5 of the ring sound source of the multi-ring sound source, and simultaneously turning on a first laser lamp and a second laser lamp, wherein a section of path irradiated by light emitted by the first laser lamp is a path which needs to be passed by the multi-ring sound source during transmission, so that the ring sound source transmission path of the multi-ring sound source is found; at the moment, light emitted by the second laser lamp can irradiate on the vertical plate and be detected by a photoelectric sensor on the vertical plate, and the two-dimensional coordinate Q0 of the photoelectric sensor is recorded by the controller;
if the distance between the two-dimensional coordinate Q1 and the two-dimensional coordinate Q0 of the photoelectric sensor irradiated by the light of the laser lamp at the time T1 is within the set value W, judging that no fault exists in the mechanical refrigerator within the time from T0 to T1;
and if the distance between the two-dimensional coordinate Q2 and the two-dimensional coordinate Q0 of the photoelectric sensor irradiated by the light of the second laser lamp is larger than the set value W at the time T1, judging that at least one mechanical refrigerator has a fault in the time from T0 to T2.
The service life test of the mechanical refrigerating machines can be detected in batches through the change of the ring, and the mechanical refrigerating machine has a simple structure and is convenient to use.
Preferably, the vibration sounder comprises a cushion block, an elastic sheet, a bell hitting bead and a bell, wherein the cushion block is fixedly connected to the outer surface of the mechanical refrigerator, one end of the bell is fixedly connected to the cushion block, and one end of the elastic sheet is fixedly connected to the cushion block between the bell and the outer surface of the mechanical refrigerator; the beating beads are fixedly arranged at the other end of the elastic sheet, and can be driven to beat on the small bell when the mechanical refrigerator vibrates.
Preferably, three vibration sound generators are provided on the front outer surface, the upper outer surface, and the left outer surface of the mechanical refrigerator, respectively.
Preferably, a sound insulation plate is arranged at the right port of each sound measuring pipe, and a sound attenuation layer is further arranged on the inner pipe wall of each sound measuring pipe.
The sound attenuation layer reduces the echo of the ring tone in the sound measuring tube, and the reliability is good.
A monitoring method of a mechanical refrigerator life testing device monitoring system according to claim 1, the monitoring method comprising a multi-ring sound source synthetic ring sound source transmission path searching method, the multi-ring sound source synthetic ring sound source transmission path searching method being implemented as follows:
firstly, placing a plurality of mechanical refrigerators respectively provided with vibration sounders on the left side in an experimental room with a sound insulation function; then the monitoring system of the mechanical refrigerator life test device is arranged on the right side in the experiment room;
then, simultaneously starting each mechanical refrigerator to be placed at the time T0;
then, simultaneously starting the sound sensors in the first sound measuring pipe, the second sound measuring pipe, the third sound measuring pipe and the fourth sound measuring pipe, and uploading the ring information detected by each sound sensor at the same moment to the controller;
then the data processing module compares the intensity of the ring tone of each uploaded ring tone information and calculates the vibration frequency, if the intensity of the ring tone A1 detected by the sound sensor in the first sound tube is greater than or less than the intensity of the ring tone A2 detected by the sound sensor in the second sound tube, the controller controls the universal rotating mechanism to rotate towards the right or left until the intensity of the ring tone detected by the sound sensor in the first sound tube is equal to the intensity of the ring tone detected by the sound sensor in the second sound tube; similarly, if the intensity A3 of the ring tone detected by the sound sensor in the third sound tube is greater than or less than the intensity a4 of the ring tone detected by the sound sensor in the fourth sound tube, the controller controls the universal rotating mechanism to rotate to the right or to the left until the intensity of the ring tone detected by the sound sensor in the third sound tube is equal to the intensity of the ring tone detected by the sound sensor in the fourth sound tube;
when a1= a2= A3= a4, stopping the rotation of the universal rotation mechanism; then, starting a sound sensor in a fifth sound measuring tube to measure the ring intensity A5 of the ring sound source of the multi-ring sound source, and simultaneously turning on a first laser lamp and a second laser lamp, wherein a section of path irradiated by light emitted by the first laser lamp is a path which needs to be passed by the multi-ring sound source during transmission, so that the ring sound source transmission path of the multi-ring sound source is found; at the moment, light emitted by the second laser lamp can irradiate on the vertical plate and be detected by a photoelectric sensor on the vertical plate, and the two-dimensional coordinate Q0 of the photoelectric sensor is recorded by the controller;
if the distance between the two-dimensional coordinate Q1 and the two-dimensional coordinate Q0 of the photoelectric sensor irradiated by the light of the laser lamp at the time T1 is within the set value W, judging that no fault exists in the mechanical refrigerator within the time from T0 to T1;
and if the distance between the two-dimensional coordinate Q2 and the two-dimensional coordinate Q0 of the photoelectric sensor irradiated by the light of the second laser lamp is larger than the set value W at the time T1, judging that at least one mechanical refrigerator has a fault in the time from T0 to T2.
The invention can achieve the following effects:
the invention can detect the service life test of the mechanical refrigerator in batches through the change of the ring, and has simple structure and convenient use.
Drawings
Fig. 1 is a schematic diagram of a connection structure in a use state in which it is determined that no mechanical refrigerator has a fault in a period from T0 to T1 when a distance between a two-dimensional coordinate Q1 and a two-dimensional coordinate Q0 of the photosensor, which is irradiated with light from a laser diode, is within a set value W at time T1.
Fig. 2 is a schematic diagram of a connection structure in a use state according to the present invention, in which when a distance between a two-dimensional coordinate Q2 and a two-dimensional coordinate Q0 of the photosensor irradiated with light from the laser light ii at time T1 is greater than a set value W, it is determined that at least one mechanical refrigerator has a fault within a time period from T0 to T2.
Fig. 3 is a schematic cross-sectional connection structure of a fifth sound tube according to the present invention.
Fig. 4 is a schematic view of a connection structure of the vibration sound generator mounted on the mechanical refrigerator according to the present invention.
Fig. 5 is a schematic block diagram of a circuit principle connection structure according to the present invention.
Detailed Description
The invention is further described with reference to the following figures and examples.
The monitoring system of the mechanical refrigerator life testing device is shown in the embodiment and is referred to fig. 1-5. The device comprises a computer 40, a shell 2 and a first laser lamp 12, wherein a wireless module 5, a memory 39, a data processing module 3 and a controller 4 are respectively arranged in the shell, a support 1 is arranged on the upper surface of the shell, and a universal rotating mechanism 8 is arranged on the support;
a vertical plate facing the universal rotating mechanism is arranged on the support positioned right of the universal rotating mechanism, a plurality of photoelectric sensors 30 are arranged on the left surface of the vertical plate, and each photoelectric sensor is connected with the controller; the two-dimensional coordinates of each photosensor are stored in a memory; the origin O of the two-dimensional coordinates is positioned on the universal rotating mechanism; the left pipe orifice of one right pipe is fixedly connected to the right surface of the universal rotating mechanism, and a second laser lamp 41 capable of irradiating light on the left surface of the vertical plate is arranged in the right pipe; the control end of the second laser lamp is connected with the controller;
vibration sounders which can make sound by vibration are fixedly arranged at three different positions on the outer surface of the mechanical refrigerator respectively; the three different positions are the front, top and left surfaces of the mechanical refrigerator, respectively.
Five sound measuring tubes are arranged on the universal rotating mechanism, the five sound measuring tubes are equal in length, the diameters of tube holes are equal, and tube axes are parallel to each other; the front end surfaces of the five sound measuring tubes are also in the same vertical plane; a first sound measuring tube 13 of the five sound measuring tubes is arranged right above the fifth sound measuring tube 11, and a second sound measuring tube 7 is arranged right below the fifth sound measuring tube; the third sound measuring tube 15 is arranged right to the left of the fifth sound measuring tube, and the fourth sound measuring tube 10 is arranged right to the fifth sound measuring tube; the first sound measuring tube and the second sound measuring tube are arranged in a left-right symmetrical mode relative to the fifth sound measuring tube, and the third sound measuring tube and the fourth sound measuring tube are also arranged in a left-right symmetrical mode relative to the fifth sound measuring tube;
a sound sensor 17 is arranged in the fifth sound measuring tube, a sound sensor 14 is arranged in the first sound measuring tube, a sound sensor 6 is arranged in the second sound measuring tube, a sound sensor 16 is arranged in the third sound measuring tube, a sound sensor 9 is arranged in the fourth sound measuring tube, a first laser lamp is also arranged in the fifth sound measuring tube, and the central line of light 18 emitted by the first laser lamp and the tube central line of the fifth sound measuring tube are on the same straight line;
the control end of the universal rotating mechanism, the control end of the first laser lamp, the wireless module, the memory, the data processing module and each sound sensor are respectively connected with the controller; the controller is in wireless connection with the computer through a wireless module;
a vertical plate 27 facing the universal rotating mechanism is arranged on the support positioned right of the universal rotating mechanism, a plurality of photoelectric sensors are arranged on the left surface of the vertical plate, and each photoelectric sensor is connected with the controller; the two-dimensional coordinates of each photosensor are stored in a memory; the origin O of the two-dimensional coordinates is positioned on the universal rotating mechanism;
a left pipe orifice of the right pipe 25 is fixedly connected to the right surface of the universal rotating mechanism, and a second laser lamp capable of irradiating light on the left surface of the vertical plate is arranged in the right pipe; the control end of the second laser lamp is connected with the controller.
The sound sensor in the fifth sound tube measures the ring intensity a5 of the ring-in sound source of the multi-ring sound source.
The vibration sounder comprises a cushion block 32, an elastic sheet 34, a bell hitting bead 35 and a bell 33, wherein the cushion block is fixedly connected to the outer surface of the mechanical refrigerator 20, one end of the bell is fixedly connected to the cushion block, and one end of the elastic sheet is fixedly connected to the cushion block between the bell and the outer surface of the mechanical refrigerator; the beating beads are fixedly arranged at the other end of the elastic sheet, and can be driven to beat on the small bell when the mechanical refrigerator vibrates.
Among the three vibration sound generators, the vibration sound generator 31 is mounted on the upper surface of the mechanical refrigerator, the vibration sound generator 36 is mounted on the left surface of the mechanical refrigerator, and the vibration sound generator 37 is mounted on the front surface of the mechanical refrigerator.
The wireless module can enable the monitoring system of the mechanical refrigerator service life testing device to be wirelessly connected with an external computer or an intelligent terminal, and control and management of the monitoring system of the mechanical refrigerator service life testing device are facilitated.
The right port of each sound measuring pipe is provided with a sound insulation plate 22, and the inner pipe wall of each sound measuring pipe is also provided with a sound attenuation layer 23. The sound attenuation layer reduces the echo of the ring tone in the sound measuring tube, and the reliability is good.
According to the monitoring method of the monitoring system of the mechanical refrigerator service life test device, the monitoring method comprises a method for searching a combined ring source transmission path of a multi-ring sound source, and the method for searching the combined ring source transmission path of the multi-ring sound source is realized by the following steps:
firstly, placing a plurality of mechanical refrigerators respectively provided with vibration sounders on the left side in an experimental room with a sound insulation function; then the monitoring system of the mechanical refrigerator life test device is arranged on the right side in the experiment room;
then, simultaneously starting each mechanical refrigerator to be placed at the time T0;
then, simultaneously starting the sound sensors in the first sound measuring pipe, the second sound measuring pipe, the third sound measuring pipe and the fourth sound measuring pipe, and uploading the ring information detected by each sound sensor at the same moment to the controller;
then the data processing module compares the intensity of the ring tone of each uploaded ring tone information and calculates the vibration frequency, if the intensity of the ring tone A1 detected by the sound sensor in the first sound tube is greater than or less than the intensity of the ring tone A2 detected by the sound sensor in the second sound tube, the controller controls the universal rotating mechanism to rotate towards the right or left until the intensity of the ring tone detected by the sound sensor in the first sound tube is equal to the intensity of the ring tone detected by the sound sensor in the second sound tube; similarly, if the intensity A3 of the ring tone detected by the sound sensor in the third sound tube is greater than or less than the intensity a4 of the ring tone detected by the sound sensor in the fourth sound tube, the controller controls the universal rotating mechanism to rotate to the right or to the left until the intensity of the ring tone detected by the sound sensor in the third sound tube is equal to the intensity of the ring tone detected by the sound sensor in the fourth sound tube;
when a1= a2= A3= a4, stopping the rotation of the universal rotation mechanism; then, starting a sound sensor in a fifth sound measuring tube to measure the ring intensity A5 of the ring sound source of the multi-ring sound source, and simultaneously turning on a first laser lamp and a second laser lamp, wherein a section of path irradiated by light emitted by the first laser lamp is a path which needs to be passed by the multi-ring sound source during transmission, so that the ring sound source transmission path of the multi-ring sound source is found; at the moment, light emitted by the second laser lamp can irradiate on the vertical plate and be detected by a photoelectric sensor on the vertical plate, and the two-dimensional coordinate Q0 of the photoelectric sensor is recorded by the controller; the paths 19 of the sub-noise of the multi-ring sound source emitted by the vibration generators 20 are combined to form a path 24 which needs to be passed when the multi-ring sound source is transmitted.
If the distance between the two-dimensional coordinate Q1 and the two-dimensional coordinate Q0 of the photoelectric sensor 29 irradiated by the light 26 of the laser lamp II is within the set value W at the time T1, judging that no fault exists in the mechanical refrigerator within the time from T0 to T1;
if the distance between the two-dimensional coordinate Q2 and the two-dimensional coordinate Q0 of the photoelectric sensor 28 irradiated by the light of the laser light II at the time T1 is larger than the set value W, it is determined that at least one mechanical refrigerator has a fault within the time T0 to T2.
The service life test of the mechanical refrigerating machines can be detected in batches through the change of the ring, and the mechanical refrigerating machine is simple in structure and convenient to use.
The embodiments of the present invention have been described above with reference to the accompanying drawings, but the implementation is not limited to the above-described embodiments, and those skilled in the art can make various changes or modifications within the scope of the appended claims.
Claims (5)
1. The monitoring system of the mechanical refrigerator service life test device is characterized by comprising a computer, a shell and a first laser lamp, wherein a wireless module, a memory, a data processing module and a controller are respectively arranged in the shell;
vibration sounders which can make sound by vibration are fixedly arranged at three different positions on the outer surface of the mechanical refrigerator respectively;
a vertical plate facing the universal rotating mechanism is arranged on the support positioned right of the universal rotating mechanism, a plurality of photoelectric sensors are arranged on the left surface of the vertical plate, and each photoelectric sensor is connected with the controller; the two-dimensional coordinates of each photosensor are stored in a memory; the origin O of the two-dimensional coordinates is positioned on the universal rotating mechanism; the left pipe orifice of one right pipe is fixedly connected to the right surface of the universal rotating mechanism, and a second laser lamp capable of irradiating light on the left surface of the vertical plate is arranged in the right pipe; the control end of the second laser lamp is connected with the controller;
five sound measuring tubes are arranged on the universal rotating mechanism, the five sound measuring tubes are equal in length, the diameters of tube holes are equal, and tube axes are parallel to each other; the front end surfaces of the five sound measuring tubes are also in the same vertical plane; the first sound measuring tube of the five sound measuring tubes is arranged right above the fifth sound measuring tube, and the second sound measuring tube is arranged right below the fifth sound measuring tube; the third sound measuring tube is arranged right to the left of the fifth sound measuring tube, and the fourth sound measuring tube is arranged right to the fifth sound measuring tube; the first sound measuring tube and the second sound measuring tube are arranged in a left-right symmetrical mode relative to the fifth sound measuring tube, and the third sound measuring tube and the fourth sound measuring tube are also arranged in a left-right symmetrical mode relative to the fifth sound measuring tube;
a sound sensor is respectively arranged in the fifth sound measuring tube, the first sound measuring tube, the second sound measuring tube, the third sound measuring tube and the fourth sound measuring tube, the first laser lamp is also arranged in the fifth sound measuring tube, and the central line of the light emitted by the first laser lamp and the central line of the fifth sound measuring tube are on the same straight line;
the control end of the universal rotating mechanism, the control end of the first laser lamp, the wireless module, the memory, the data processing module and each sound sensor are respectively connected with the controller; the controller is in wireless connection with the computer through the wireless module.
2. The monitoring system for the life test device of the mechanical refrigerator as claimed in claim 1, wherein the vibration generator comprises a cushion block, an elastic sheet, a bell striking bead and a bell, the cushion block is fixedly connected to the outer surface of the mechanical refrigerator, one end of the bell is fixedly connected to the cushion block, and one end of the elastic sheet is fixedly connected to the cushion block between the bell and the outer surface of the mechanical refrigerator; the beating beads are fixedly arranged at the other end of the elastic sheet, and can be driven to beat on the small bell when the mechanical refrigerator vibrates.
3. The mechanical refrigerator life test apparatus monitoring system according to claim 1, wherein three vibration sound generators are provided on the front outer surface, the upper outer surface, and the left outer surface of the mechanical refrigerator, respectively.
4. The monitoring system for a life test device of a mechanical refrigerator as claimed in claim 1, wherein a sound insulation board is provided at the right port of each sound measurement tube, and a sound attenuation layer is further provided on the inner tube wall of each sound measurement tube.
5. A monitoring method of a monitoring system of a mechanical refrigerator life testing device according to claim 1, wherein the monitoring method comprises a method for searching a transmission path of a multi-ring sound source, and the method for searching a transmission path of a multi-ring sound source is implemented as follows:
firstly, placing a plurality of mechanical refrigerators respectively provided with vibration sounders on the left side in an experimental room with a sound insulation function; then the monitoring system of the mechanical refrigerator life test device is arranged on the right side in the experiment room;
then, simultaneously starting each mechanical refrigerator to be placed at the time T0;
then, simultaneously starting the sound sensors in the first sound measuring pipe, the second sound measuring pipe, the third sound measuring pipe and the fourth sound measuring pipe, and uploading the ring information detected by each sound sensor at the same moment to the controller;
then the data processing module compares the intensity of the ring tone of each uploaded ring tone information and calculates the vibration frequency, if the intensity of the ring tone A1 detected by the sound sensor in the first sound tube is greater than or less than the intensity of the ring tone A2 detected by the sound sensor in the second sound tube, the controller controls the universal rotating mechanism to rotate towards the right or left until the intensity of the ring tone detected by the sound sensor in the first sound tube is equal to the intensity of the ring tone detected by the sound sensor in the second sound tube; similarly, if the intensity A3 of the ring tone detected by the sound sensor in the third sound tube is greater than or less than the intensity a4 of the ring tone detected by the sound sensor in the fourth sound tube, the controller controls the universal rotating mechanism to rotate to the right or to the left until the intensity of the ring tone detected by the sound sensor in the third sound tube is equal to the intensity of the ring tone detected by the sound sensor in the fourth sound tube;
when a1= a2= A3= a4, stopping the rotation of the universal rotation mechanism; then, starting a sound sensor in a fifth sound measuring tube to measure the ring intensity A5 of the ring sound source of the multi-ring sound source, and simultaneously turning on a first laser lamp and a second laser lamp, wherein a section of path irradiated by light emitted by the first laser lamp is a path which needs to be passed by the multi-ring sound source during transmission, so that the ring sound source transmission path of the multi-ring sound source is found; at the moment, light emitted by the second laser lamp can irradiate on the vertical plate and be detected by a photoelectric sensor on the vertical plate, and the two-dimensional coordinate Q0 of the photoelectric sensor is recorded by the controller;
if the distance between the two-dimensional coordinate Q1 and the two-dimensional coordinate Q0 of the photoelectric sensor (29) irradiated by the light of the laser lamp at the time T1 is within the set value W, judging that no mechanical refrigerator has a fault within the time from T0 to T1;
if the distance between the two-dimensional coordinate Q2 and the two-dimensional coordinate Q0 of the photoelectric sensor (28) irradiated by the light of the laser lamp II is larger than the set value W at the time T1, it is judged that at least one mechanical refrigerator has a fault within the time from T0 to T2.
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