A power supply fan wind speed abnormal sound light detection device

Abstract

The present invention relates to the technical field of automatic detection equipment, and specifically to a power supply fan wind speed abnormal sound light detection equipment, comprising a frame, a conveying device mounted on the frame, the conveying device is provided with a jig, and the conveying device is provided with a positioning device for positioning the jig; a material taking device mounted on the conveying device, the material taking device is provided with an abnormal sound suction cup for detecting the abnormal sound of the power supply fan, and the abnormal sound suction cup is connected to a detection system; a light detection device installed on the frame on one side of the conveying device, and a plug-in device is provided on the other side; a wind speed detection device installed on the frame, the wind speed detection device is provided with a detection probe, and the detection probe is connected to the detection system; the present invention is used for detection in the production process of a PC power supply, and is used for detecting the abnormal sound and speed of a cooling fan, and detecting whether there is an abnormality in the power supply, with good detection effect, high degree of automation, and high work efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of automatic detection equipment, and in particular to a power supply fan wind speed abnormal sound light detection device. Background Art

[0002] Automation technology is widely used in industry, agriculture, military, scientific research, transportation, commerce, medical treatment, services and families. Large-scale complete equipment in the automation system is also called automation device. It refers to the process in which a machine or device automatically operates or controls according to the prescribed procedures or instructions without human intervention.

[0003] In the production process of PC power supplies, various performance tests need to be performed on the assembled PC power supplies, and the fan contained in the power supply is one of the tests. In the prior art, the fan is always tested by a separate test device or manually during the production process of PC power supplies, especially the abnormal sound and speed of the power supply fan during rotation, which is difficult to test. Summary of the invention

[0004] In order to solve the above problems, the present invention provides a power supply fan wind speed abnormal sound and light detection device which is used for detection in the production process of PC power supply, and is applied to detect the abnormal sound and speed of the cooling fan to detect whether there is an abnormality in the power supply, and has good detection effect, high degree of automation and high working efficiency.

[0005] The technical solution adopted by the present invention is: a power supply fan wind speed abnormal sound light detection device, comprising a frame,

[0006] A conveying device mounted on the frame, the conveying device transports a jig, and the conveying device is provided with a positioning device for positioning the jig;

[0007] A material taking device mounted on the conveying device, wherein the material taking device is provided with an abnormal sound suction cup for detecting abnormal sound of a power supply fan, and the abnormal sound suction cup is connected to a detection system;

[0008] A light detection device installed on the frame at one side of the conveying device, wherein the light detection device is equipped with a detection lens corresponding to the fixture;

[0009] A plug-in device installed on the frame at the other side of the conveying device, wherein the plug-in device is provided with a joint corresponding to the jig;

[0010] A wind speed detection device is installed on the frame above the material taking device. The wind speed detection device is provided with an XYZ transmission module and a detection probe installed on the XYZ transmission module. The detection probe is connected to the detection system.

[0011] A further improvement to the above scheme is that the conveying device includes a conveying bracket, a conveying chain installed on the conveying bracket, a conveying roller mounted on the conveying bracket for driving the conveying chain, and a conveying motor installed on the conveying bracket and connected to the conveying roller.

[0012] A further improvement to the above solution is that the fixture is provided with a plurality of placement cavities for placing power supplies, and a plurality of groups of connection plates corresponding to the placement cavities are provided on one side of the fixture.

[0013] A further improvement to the above scheme is that the positioning device includes a lifting cylinder, a positioning plate drivingly connected to the lifting cylinder, the positioning plate is equipped with a plurality of positioning pins for positioning the fixture, and a conveying positioning cylinder is installed on one side of the lifting cylinder.

[0014] A further improvement to the above scheme is that the material picking device includes a material picking bracket, a material picking cylinder installed on the material picking bracket, and the material picking cylinder is driven and connected to a material picking claw; the abnormal sound suction cup is installed on the material picking bracket at one side of the material picking cylinder.

[0015] A further improvement to the above solution is that the material taking bracket is provided with a pull-out cylinder on one side of the material taking cylinder, and the pull-out cylinder is driven and connected with a clamping plate.

[0016] A further improvement to the above scheme is that the detection system includes an abnormal sound control box and a speed detection control box, the abnormal sound control box is provided with abnormal sound detection software, the abnormal sound suction cup is provided with an amplifier connected to the abnormal sound detection software; the speed detection control box is provided with a speed detection software, and the detection probe is connected to the speed detection software.

[0017] A further improvement to the above scheme is that the light detection device includes a lens transmission module, a lens lifting module arranged on the lens transmission module, the detection lens is installed on the lens lifting module, and the detection lens is a CCD detection lens.

[0018] A further improvement to the above scheme is that the plug-in device is provided with a plug-in drive assembly, the plug-in drive assembly is drive-connected to the connector, and the connector is provided in several groups corresponding to the fixture.

[0019] A further improvement to the above scheme is that the wind speed detection device is provided with a detection support frame, the detection system is installed on the detection support frame, the XYZ transmission module is installed on the detection support frame and is located on one side of the detection system, the XYZ transmission module is connected to a mounting bracket, the mounting bracket is provided with several groups of detection probes, and the detection probes are connected to the detection system.

[0020] The beneficial effects of the present invention are:

[0021] The rack is set to support and install the whole equipment, and a conveying device is set to convey the fixture that fixes the power supply. When it is conveyed to the specified position, the fixture is positioned by the positioning device. After positioning, the power supply on the fixture is grabbed by the picking device. During the positioning process, the connector is driven to plug with the fixture through the plug-in device to realize conductivity. After conductivity, the power supply and the fixture are connected with each other by a connecting line, so that the connection and conductive operation can be realized. During the operation of the power supply, the power supply is attached to the abnormal sound suction cup through the picking device. The attachment position of the abnormal sound suction cup is the cooling fan position of the power supply, so that the power supply fan can be judged by absorbing the sound during the rotation of the cooling fan. To check whether the fan is abnormal, a detection system is set up to cooperate with the abnormal sound suction cup to realize sound detection, and the detection effect is good; in the process of abnormal sound detection, a light detection device is also set up to detect the power light on the fixture. The power supply itself has a power-on indicator light. After the indicator light is powered on, it lights up and the detection lens is driven by the light detection device to detect the light to determine whether the power is successfully powered on; in addition, a wind speed detection device is also set up in the detection work, and a speed-sensing detection probe is specifically set up to detect the fan speed during rotation to detect whether the fan speed is stable. The XYZ transmission module is set up in combination with the drive to realize detection in a larger range, thereby improving the detection effect.

[0022] In the present invention, detection is performed during the production process of a PC power supply, and the abnormal sound and rotation speed of a cooling fan are detected to detect whether the power supply is abnormal. The detection effect is good, the degree of automation is high, and the work efficiency is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0024] Figure 2 It is a schematic diagram of the three-dimensional structure of the conveying device of the present invention;

[0025] Figure 3 It is a three-dimensional structural schematic diagram of the conveying device of the present invention from another perspective;

[0026] Figure 4 It is a schematic diagram of the three-dimensional structure of the material taking device of the present invention;

[0027] Figure 5 It is a schematic diagram of the three-dimensional structure of the light detection device of the present invention;

[0028] Figure 6 It is a schematic diagram of the three-dimensional structure of the wind speed detection device of the present invention;

[0029] Figure 7 The circuit diagram of the abnormal noise detection of the fan of the present invention is as follows;

[0030] Figure 8The schematic diagram of the circuit for detecting the fan speed of the present invention is

[0031] Fig. 9 This is an example diagram of fan speed detection according to the present invention.

[0032] Description of reference numerals: detection device 10, frame 100, conveying device 200, conveying bracket 210, conveying chain 220, conveying roller 230, conveying motor 240, fixture 300, placement cavity 310, connecting plate 320, positioning device 400, lifting cylinder 410, positioning plate 420, positioning pin 430, conveying positioning cylinder 440, material picking device 500, material picking bracket 510, material picking cylinder 520, material picking claw 530 , pull-out cylinder 540, clamping plate 550, detection system 600, abnormal sound suction cup 610, detection probe 620, abnormal sound control box 630, detection control box 640, lighting detection device 700, lens transmission module 710, lens lifting module 720, detection lens 730, plug-in device 800, connector 810, plug-in drive assembly 820, wind speed detection device 900, XYZ transmission module 910, detection support frame 920. DETAILED DESCRIPTION

[0033] The present invention will be further described below in conjunction with the accompanying drawings.

[0034] like Figure 1 As shown, a power supply fan wind speed abnormal sound light detection device 10 includes a frame 100,

[0035] A conveying device 200 mounted on the frame 100, the conveying device 200 conveys a jig 300, and the conveying device 200 is provided with a positioning device 400 for positioning the jig 300;

[0036] A material taking device 500 mounted on the conveying device 200, wherein the material taking device 500 is provided with a noise suction cup 610 for detecting abnormal noise of a power supply fan, and the noise suction cup 610 is connected to a detection system 600;

[0037] A light detection device 700 installed on the frame 100 at one side of the conveying device 200, wherein the light detection device 700 is equipped with a detection lens 730 corresponding to the fixture 300;

[0038] A plug-in device 800 is installed on the frame 100 and is located on the other side of the conveying device 200. The plug-in device 800 is provided with a joint 810 corresponding to the fixture 300;

[0039] The wind speed detection device 900 is installed on the frame 100 above the material taking device 500 . The wind speed detection device 900 is provided with an XYZ transmission module 910 , and a detection probe 620 is installed on the XYZ transmission module 910 . The detection probe 620 is connected to the detection system 600 .

[0040] like Figure 2 As shown, the conveying device 200 includes a conveying bracket 210, a conveying chain 220 installed on the conveying bracket 210, a conveying roller 230 mounted on the conveying bracket 210 for driving the conveying chain 220, and a conveying motor 240 installed on the conveying bracket 210 and connected to the conveying roller 230. Specifically, the conveying motor 240 drives the conveying roller 230 to drive the conveying chain 220 to achieve transmission, thereby ensuring that the jig 300 is stably conveyed on the conveying bracket 210, with good conveying effect and high work efficiency.

[0041] The fixture 300 is provided with a plurality of placement cavities 310 for placing power supplies, and a plurality of groups of connection plates 320 corresponding to the placement cavities 310 are provided on one side of the fixture 300. The placement cavities 310 are used for placement during power transmission, and the connection plates 320 are provided for connecting the plug-in device 800 to realize electrical connection of each group of power supplies, which facilitates connection.

[0042] like Figure 4 As shown, the positioning device 400 includes a lifting cylinder 410 and a positioning plate 420 driven and connected to the lifting cylinder 410. The positioning plate 420 is installed with a plurality of positioning pins 430 for positioning the fixture 300. A conveying positioning cylinder 440 is installed on one side of the lifting cylinder 410. Specifically, during the conveying process of the fixture 300, the fixture 300 is first positioned by the conveying positioning cylinder 440, and then the positioning plate 420 is driven by the lifting cylinder 410 to lift the fixture 300. During the lifting process, the positioning pins 430 are used to cooperate with the fixture 300 to ensure the positioning accuracy.

[0043] The material picking device 500 includes a material picking bracket 510, a material picking cylinder 520 installed on the material picking bracket 510, and the material picking cylinder 520 is driven and connected to a material picking claw 530; the abnormal sound suction cup 610 is installed on the material picking bracket 510 and is located on one side of the material picking cylinder 520. Specifically, the material picking bracket 510 plays a supporting and installing role. When the lifting cylinder 410 lifts the fixture 300 to a specified height, the material picking claw 530 is driven by the material picking cylinder 520 to grab the power supply, so that the abnormal sound suction cup 610 and the power supply are fitted to realize abnormal sound testing, and the test effect is good.

[0044] The material picking bracket 510 is provided with a pull-out cylinder 540 on one side of the material picking cylinder 520. The pull-out cylinder 540 is driven and connected to a clamping plate 550. The pull-out cylinder 540 can pull out the connector of the power supply after the test is completed, thus saving the manual plug-in and unplugging process and also facilitating the subsequent processing of the power supply.

[0045] The detection system 600 includes an abnormal sound control box 630 and a rotation speed detection control box 640. The abnormal sound control box 630 is provided with abnormal sound detection software, and the abnormal sound suction cup 610 is provided with an amplifier connected to the abnormal sound detection software; the rotation speed detection control box 640 is provided with rotation speed detection software, and the detection probe 620 is connected to the rotation speed detection software.

[0046] The principle of abnormal sound detection is: Figure 7 As shown, the sound obtained by the noise suction cup 610 is sensed by a high-sensitivity pickup, filtered by C1 and C2, wherein C1 filters the ultra-high frequency band and C2 filters the low frequency band, and then the amplifier is used to amplify the signal, and finally the ultra-high frequency is filtered by the resistor-capacitor filter circuit and sent to the ADC microcontroller for processing.

[0047] Refer to the commonly used LM386 sound amplifier circuit, and make some changes to reduce the circuit's sensitivity to human voice; use an oscilloscope to capture the output of the circuit labeled ADC, and you can see the waveform changes when the circuit detects that the fan is blocked by foreign objects; the ADC collects the circuit output signal, performs certain operations and finally gets a value, which can be used to determine whether the fan is blocked by foreign objects.

[0048] The principle of fan speed detection is: use infrared light to detect the fan speed. Figure 8 As shown, there is a transmitting tube on the left and a receiving tube on the right. The infrared light emitted by the transmitting tube is received by the receiving tube after reflection. The on-resistance of the receiving tube is related to the reflection intensity. Figure 8 The voltage value at the upper arrow will change with the reflection intensity. When the transmitting tube and the receiving tube are facing the running fan, a voltage waveform will be measured by an oscilloscope when the signal is normal;

[0049] like Fig. 9 As shown, it can be clearly seen that because the gaps between the fan blades are inconsistent, the amount of light reflected from the transmitting tube to the receiving tube will be different, and the circuit will output a wavy voltage;

[0050] Fig. 9The fan in the figure has 7 blades. The speed is calculated as follows: measure the time t of 7 groups of bands, speed = 60*(1 / t). The t value in the figure above is 75ms, and the speed is 800 rpm. The microcontroller measures the speed using this principle. The high-speed ADC of the microcontroller is used to sample the voltage at the red arrow on the schematic diagram above 1024 times at a fixed time. Then, based on the sampled data, the two farthest troughs are found, and the distance between the two troughs is calculated, and the number of peaks between the two troughs is calculated. In this way, the speed of a single wave can be calculated, and then divided by the number of leaves to get the fan speed.

[0051] like Figure 5 As shown, the light detection device 700 includes a lens transmission module 710, a lens lifting module 720 which is arranged on the lens transmission module 710, and the detection lens 730 is installed on the lens lifting module 720. The detection lens 730 is a CCD detection lens 730, which detects several groups of power supplies by linear transmission realized by the lens transmission module 710. The lifting module can follow the height of the lifting cylinder 410 to adjust the height of the detection lens 730 for detection, and the detection range is wide.

[0052] The plug-in device 800 is provided with a plug-in drive component 820, which is driven and connected to the connector 810. The connector 810 is provided with several groups corresponding to the fixture 300, and then the plug-in drive component 820 drives the connector 810 to be plugged and connected with the connecting plate 320 on the fixture 300 to realize power-on testing and ensure the test effect.

[0053] like Figure 6 As shown, the wind speed detection device 900 is provided with a detection support frame 920, the detection system 600 is installed on the detection support frame 920, the XYZ transmission module 910 is installed on the detection support frame 920 and is located on one side of the detection system 600, the XYZ transmission module 910 is connected with a mounting bracket, the mounting bracket is provided with several groups of detection probes 620, the detection probes 620 are connected to the detection system 600, specifically, the detection probes 620 are thermal sensitive probes, which can detect the rotation speed by receiving the infrared rays after being reflected by the receiving tube, and several groups are set to perform detection in the same working mode at the same time, so that the detection effect is good and the work efficiency is high.

[0054] A frame 100 is provided to support and install the whole device, a conveying device 200 is provided to convey the fixture 300 on which the power supply is fixed, and when the fixture 300 is conveyed to the designated position, the fixture 300 is positioned by the positioning device 400, and after positioning, the power supply on the fixture 300 is grabbed by the material taking device 500, and during the positioning process, the connector 810 is driven by the plug-in device 800 to be plugged with the fixture 300 to realize conductivity, and after conductivity, the power supply and the fixture 300 are connected with each other by a connecting line, so that the connection and conductive operation can be realized, and during the operation of the power supply, the power supply is taken out by the material taking device 500 and fitted with the abnormal sound suction cup 610, and the fitting position of the abnormal sound suction cup 610 is the cooling fan position of the power supply, so that the sound during the rotation of the cooling fan can be absorbed. The sound is used to determine whether the power supply fan is abnormal. A detection system 600 is set to cooperate with the abnormal sound suction cup 610 to realize sound detection work, and the detection effect is good. During the abnormal sound detection process, a light detection device 700 is also set to detect the power light on the fixture 300. The power supply itself has a power-on indicator light. After the indicator light is powered on, it lights up and drives the detection lens 730 to detect the light through the light detection device 700 to determine whether the power supply is successfully powered on. In addition, a wind speed detection device 900 is also set in the detection work, and a speed-sensing detection probe 620 is specifically set to detect the fan speed during the rotation process to detect whether the fan speed is stable. The XYZ transmission module 910 is set to be used in combination with the drive to realize detection in a larger range, thereby improving the detection effect.

[0055] In the present invention, detection is performed during the production process of a PC power supply, and the abnormal sound and rotation speed of a cooling fan are detected to detect whether the power supply is abnormal. The detection effect is good, the degree of automation is high, and the work efficiency is high.

[0056] The above-mentioned embodiments only express several implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the patent of the present invention. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A power supply fan wind speed abnormal sound light detection device, comprising a frame, characterized in that: A conveying device mounted on the frame, the conveying device transports a jig, and the conveying device is provided with a positioning device for positioning the jig; A material taking device mounted on the conveying device, wherein the material taking device is provided with an abnormal sound suction cup for detecting abnormal sound of a power supply fan, and the abnormal sound suction cup is connected to a detection system; A light detection device installed on the frame at one side of the conveying device, wherein the light detection device is equipped with a detection lens corresponding to the jig; A plug-in device installed on the frame at the other side of the conveying device, wherein the plug-in device is provided with a joint corresponding to the jig; A wind speed detection device installed on the frame above the material taking device, the wind speed detection device is provided with an XYZ transmission module, a detection probe installed on the XYZ transmission module, and the detection probe is connected to the detection system; The detection system includes an abnormal sound control box and a speed detection control box, the abnormal sound control box is provided with abnormal sound detection software, the abnormal sound suction cup is provided with an amplifier connected to the abnormal sound detection software; the speed detection control box is provided with speed detection software, and the detection probe is connected to the speed detection software; during abnormal sound detection, the sound obtained by the abnormal sound suction cup is filtered by C1 and C2, wherein C1 filters the ultra-high frequency band and C2 filters the low frequency band, and then the amplifier is used to amplify the signal, and finally the ultra-high frequency is filtered by the resistance-capacitance filter circuit, and then sent to the ADC microcontroller for processing; The light detection device comprises a lens transmission module, a lens lifting module which is arranged on the lens transmission module, the detection lens is installed on the lens lifting module, and the detection lens is a CCD detection lens; During the fan speed detection process, an infrared pair of tubes is used, with a transmitting tube on the left and a receiving tube on the right. The infrared light emitted by the transmitting tube is received by the receiving tube after reflection. The on-resistance of the receiving tube is related to the reflection intensity, and the voltage value changes with the reflection intensity. When the transmitting tube and the receiving tube are facing the running fan, the signal will be measured by an oscilloscope to produce a voltage waveform. Because the gaps between the fan blades are inconsistent, the amount of light reflected from the transmitting tube to the receiving tube will be different, and the circuit will output a wavy voltage. The material taking device comprises a material taking bracket, a material taking cylinder installed on the material taking bracket, and the material taking cylinder is drivingly connected to a material taking claw; the abnormal sound suction cup is installed on the material taking bracket and located on one side of the material taking cylinder; The material taking bracket is provided with a pull-out cylinder on one side of the material taking cylinder, and the pull-out cylinder is driven and connected with a clamping plate; The wind speed detection device is provided with a detection support frame, the detection system is installed on the detection support frame, the XYZ transmission module is installed on the detection support frame and is located on one side of the detection system, the XYZ transmission module is connected with a mounting bracket, the mounting bracket is provided with several groups of detection probes, and the detection probes are connected to the detection system; The plug-in device drives the connector to plug into the fixture to achieve conductivity. After conductivity, the power supply and the fixture are connected by a connecting line, thereby enabling connection and conductive operation. During the operation of the power supply, the power supply material is fitted with the abnormal sound suction cup through the material picking device, and the cylinder is pulled out to unplug the connector of the power supply after the test is completed.

2. The power supply fan wind speed abnormal sound light detection device according to claim 1, characterized in that: The conveying device comprises a conveying bracket, a conveying chain installed on the conveying bracket, a conveying roller mounted on the conveying bracket for driving the conveying chain, and a conveying motor installed on the conveying bracket and connected to the conveying roller.

3. The power supply fan wind speed abnormal sound light detection device according to claim 1, characterized in that: The fixture is provided with a plurality of placement cavities for placing power supplies, and a plurality of groups of connection plates corresponding to the placement cavities are arranged on one side of the fixture, and the connection plates are used to connect the plug-in devices to realize the electrical connection of each group of power supplies.

4. The power supply fan wind speed abnormal sound light detection device according to claim 1, characterized in that: The positioning device comprises a lifting cylinder and a positioning plate drivingly connected to the lifting cylinder, wherein the positioning plate is provided with a plurality of positioning pins for positioning the fixture, and a conveying positioning cylinder is provided on one side of the lifting cylinder.

5. The power supply fan wind speed abnormal sound light detection device according to claim 1, characterized in that: The plug-in device is provided with a plug-in drive assembly, and the plug-in drive assembly is drive-connected to the joint, and the joint is provided with several groups corresponding to the fixture.

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