CN115542814A - Intelligent detection system for industrial equipment - Google Patents
Intelligent detection system for industrial equipment Download PDFInfo
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- CN115542814A CN115542814A CN202211254112.0A CN202211254112A CN115542814A CN 115542814 A CN115542814 A CN 115542814A CN 202211254112 A CN202211254112 A CN 202211254112A CN 115542814 A CN115542814 A CN 115542814A
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- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
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- G—PHYSICS
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- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
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- G05B2219/24215—Scada supervisory control and data acquisition
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Abstract
The invention relates to the technical field of industrial equipment, and provides an intelligent detection system for industrial equipment, which comprises an ultrasonic flaw detection circuit, an audio acquisition circuit, a vibration acquisition circuit, a main control circuit and a storage circuit, wherein the input end of the main control circuit is connected with the output end of the ultrasonic flaw detection circuit and is used for receiving flaw detection signals fed back by ultrasonic waves, the output end of the audio acquisition circuit is connected with the input end of the main control circuit and is used for sending audio feedback waveforms, the input end of the main control circuit is connected with the output end of the vibration acquisition circuit and is used for receiving ultrasonic waves, audio waves and vibration which are different in waveform and are compared with normal reflected waves, and the output end of the main control circuit is connected with the input end of the storage circuit and is used for sending abnormal data to the storage circuit for storage and filing; the invention can realize an intelligent detection system for industrial equipment.
Description
Technical Field
The invention relates to the technical field of equipment maintenance, in particular to an intelligent detection system for industrial equipment.
Background
For the manufacturing industry, the global environment is open, technical innovation is still rapidly developed, industrial upgrading is also accelerated, industrial equipment is continuously updated and upgraded, maintenance of a large amount of equipment promotes the vigorous development of the detection industry, the market scale is continuously enlarged, cracks of a supporting part and abnormal sounds of a moving part can occur inside the equipment in the using process, a worker can hardly find the equipment in the operation process to cause safety accidents, but the existing equipment is detected by related experienced personnel manually to analyze the problems, and the problem searching efficiency is low.
Disclosure of Invention
The invention aims to provide a universal intelligent detection system for industrial equipment, which can efficiently detect internal damage.
In order to solve the problems, the invention provides an intelligent detection system for industrial equipment, which comprises an ultrasonic flaw detection circuit, an audio acquisition circuit, a vibration acquisition circuit, a main control circuit and a storage circuit, wherein the input end of the main control circuit is connected with the output end of the ultrasonic flaw detection circuit to receive flaw detection signals fed back by ultrasonic waves, the output end of the audio acquisition circuit is connected with the input end of the main control circuit to send audio feedback waveforms, the input end of the main control circuit is connected with the output end of the vibration acquisition circuit to receive ultrasonic waves, audio waves and vibration different waveforms to be compared with normal reflected waves, and the output end of the main control circuit is connected with the input end of the storage circuit to send abnormal data to the storage circuit for storage.
Furthermore, the ultrasonic flaw detection circuit comprises an ultrasonic working circuit and an ultrasonic amplification circuit, the ultrasonic working circuit comprises a first phase inverter, a first ultrasonic transducer, a first power supply filter capacitor and a first pull-up circuit, the output end of the first phase inverter is connected with the input end of the first ultrasonic transducer, sinusoidal square waves are output to drive the first ultrasonic transducer to work, the output end of the first power supply filter capacitor is connected with the input end of the first pull-up circuit, the output end of the first pull-up circuit is connected with the input end of the first ultrasonic transducer, the voltage at the input end of the first ultrasonic transducer is improved, and the anti-interference capability and the transmission distance are increased.
Further, the ultrasonic amplifying circuit includes a first operational amplifier, a second feedback resistor, a first current limiting circuit, a first high gain amplifier, a third feedback resistor, a fourth power filter capacitor, a second high gain amplifier, a fifth power filter capacitor, a fourth current limiting resistor, and a second operational amplifier, an output terminal of the first operational amplifier is connected to an input terminal of the first current limiting circuit, a feedback terminal of the first operational amplifier is connected to the second feedback resistor, and an output is adjusted according to a feedback voltage, an output terminal of the first current limiting circuit is connected to an input terminal of the first high gain amplifier, an input terminal of the third feedback resistor is connected to a feedback terminal of the first high gain amplifier, an output terminal of the fourth power filter capacitor is connected to a power terminal of the first high gain amplifier, an output terminal of the first high gain amplifier is connected to an input terminal of the second high gain amplifier, an output terminal of the fifth power filter capacitor is connected to a power terminal of the second high gain amplifier, and an output terminal of the second high gain amplifier is connected to an input terminal of the second high gain amplifier via the fourth current limiting resistor.
Furthermore, the audio acquisition circuit comprises an audio working circuit and an audio amplification circuit, the audio working circuit comprises a first microphone, a first triode, a second RC circuit, a first capacitor, a second pull-up resistor, a second current-limiting resistor, a first feedback resistor, a first resistor, a second capacitor and a second isolation capacitor, the output end of the first microphone is connected with the base of the first triode through the first capacitor, a 5V power supply is connected with the collector of the first triode through the second pull-up resistor and the second current-limiting resistor, the output end of the first microphone is connected with the 5V power supply through the second RC circuit, the collector of the first triode is connected with the base of the first feedback resistor through the first feedback resistor, the collector of the first triode is grounded through the second capacitor and the first resistor, the emitter of the first triode is connected with the ground, and the control end of the first resistor is connected with the second isolation capacitor.
Furthermore, the audio amplification circuit comprises a voltage amplification circuit and an instrument amplification circuit, the output end of the voltage amplification circuit is connected with the input end of the vibration acquisition circuit, and the input end of the instrument amplification circuit and the output end of the audio working circuit amplify received audio signals.
Further, vibrations acquisition circuit is including vibrations work circuit and AD converting circuit, vibrations work circuit's output with AD converting circuit's input is connected, sends the simulation vibration signal, AD converting circuit's output with master control circuit's input is connected, converts analog signal into digital signal and sends the master control.
Furthermore, the input end of the main control circuit is respectively connected with the output ends of the ultrasonic flaw detection circuit, the audio acquisition circuit and the vibration acquisition circuit, and three different feedback waveforms of ultrasonic waves, audio and vibration are obtained.
The output end of the main control circuit is connected with the input end of the detection circuit, the output end of the detection circuit is connected with the input end of the interface conversion circuit, data are transmitted to the interface conversion circuit, and a user can directly read the data through a USB interface.
The input end of the power supply circuit is connected with the power end of the storage circuit, the data end of the storage circuit is electrically connected with the data end of the main control circuit, and the three types of waveform information received by the main control circuit is stored.
Furthermore, the system also comprises a communication circuit, wherein a data end of the communication circuit is connected with a data end of the main control circuit, and the data end sends data to a server to perform cloud backup on the waveform parameters.
Compared with the prior art, the invention has the beneficial effects that:
the sensor of the system is arranged on a device to be detected, a power supply is started, the system can start detection, the ultrasonic flaw detection circuit sends out ultrasonic waves to probe the device and automatically receives the reflected ultrasonic waves, then the signals are amplified and transmitted to the main control circuit, the audio acquisition circuit and the vibration acquisition circuit collect working sound and vibration data of the device when the device works and convert the sound signals and the vibration data into electric signals to be amplified and transmitted to the main control circuit, the main control circuit can compare and analyze the received three detection signals to find out abnormal points of the three detection signals, and a professional can also use the instrument detection device to find out the abnormal points to find problems without the need of finding out the abnormal points, the main control circuit is in data connection with the storage circuit, the three detection signals received by the main control circuit and the abnormal state information of the three detection signals are stored in the storage circuit to serve as an abnormal analysis database, and the speed of searching and analyzing problems by the instrument is higher when the data are stored.
Drawings
FIG. 1 is a schematic block diagram of an intelligent detection system for industrial equipment according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of an ultrasonic transmitter circuit according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of an ultrasonic receiving circuit according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of the schematic structure of an ultrasonic amplifying circuit according to an embodiment of the present invention;
FIG. 5 is a schematic diagram of an audio operating circuit according to an embodiment of the present invention;
FIG. 6 is a schematic diagram of a voltage amplifying circuit according to an embodiment of the present invention;
FIG. 7 is a schematic diagram of a schematic structure of an instrument amplification circuit according to an embodiment of the present invention;
FIG. 8 is a schematic diagram of a principle structure of a vibration circuit according to an embodiment of the present invention;
FIG. 9 is a schematic diagram of the AD conversion circuit according to the embodiment of the present invention;
FIG. 10 is a schematic diagram of a main control circuit according to an embodiment of the present invention;
FIG. 11 is a schematic diagram of a schematic structure of a memory circuit according to an embodiment of the invention;
FIG. 12 is a schematic diagram of a power circuit according to an embodiment of the present invention;
FIG. 13 is a schematic diagram of a schematic structure of a detection circuit according to an embodiment of the present invention;
FIG. 14 is a schematic diagram of an interface conversion circuit according to an embodiment of the present invention;
FIG. 15 is a schematic diagram of a communication circuit according to an embodiment of the present invention;
description of reference numerals:
1-ultrasonic flaw detection circuit; 11-an ultrasonic working circuit; 111-an ultrasonic transmission circuit; 112-an ultrasonic receiving circuit; 12-an ultrasonic amplification circuit; 2-an audio acquisition circuit; 21-audio frequency working circuit; 22-an audio amplification circuit; 221-a voltage amplification circuit; 222-instrument amplification circuit; 3-a vibration acquisition circuit; 31-a vibration operation circuit; a 32-AD conversion circuit; 4-a master control circuit; 5-a storage circuit; 6-a power supply circuit; 7-a detection circuit; 8-interface conversion circuit; 9-a communication circuit;
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; may be a mechanical connection; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In the description herein, references to the terms "an embodiment," "one embodiment," and "one implementation," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or implementation is included in at least one embodiment or example implementation of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or implementation. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or implementations.
The embodiment of the invention provides a device which comprises an ultrasonic flaw detection circuit 1, an audio frequency acquisition circuit 2, a vibration acquisition circuit 3, a main control circuit 4 and a storage circuit 5, wherein the input end of the main control circuit 4 is connected with the output end of the ultrasonic flaw detection circuit 1 to receive flaw detection signals fed back by ultrasonic waves, the output end of the audio frequency acquisition circuit 2 is connected with the input end of the main control circuit 4 to send audio frequency feedback waveforms, the input end of the main control circuit 4 is connected with the output end of the vibration acquisition circuit 3 to receive ultrasonic waves, audio frequencies and vibration different waveforms to be compared with normal reflected waves, the output end of the main control circuit 4 is connected with the input end of the storage circuit 5 to send abnormal data to the storage circuit 5 to be stored for filing.
It should be noted that, as shown in fig. 1, the ultrasonic inspection circuit 1 sends out ultrasonic waves to inspect equipment, and automatically receives the reflected ultrasonic waves, and then amplifies and transmits signals to the main control circuit 4, the audio acquisition circuit 2 and the vibration acquisition circuit 3 collect working sound and vibration data of the equipment when the equipment works, and convert the sound signals and the vibration data into electric signals to be amplified and transmitted to the main control circuit 4, the main control circuit 4 performs comparative analysis on the three received detection signals, finds out abnormal points of the three detection signals, improves the speed of finding problems for users, and can also use instrument detection equipment to find out abnormal points without professional skills, the main control circuit 4 is in data connection with the storage circuit 5, and stores the three detection signals received by the main control and the abnormal state information thereof in the storage circuit 5 as an abnormal analysis database, and the speed of finding analysis problems by the instrument is faster as more data are stored.
In an embodiment of the present invention, the ultrasonic flaw detection circuit 1 includes an ultrasonic working circuit 11 and an ultrasonic amplification circuit 12, the ultrasonic working circuit 11 includes a first inverter, a first ultrasonic transducer, a first power supply filter capacitor, and a first pull-up circuit, an output end of the first inverter is connected to an input end of the first ultrasonic transducer, a sinusoidal square wave is output to drive the first ultrasonic transducer to work, an output end of the first power supply filter capacitor is connected to an input end of the first pull-up circuit, and an output end of the first pull-up circuit is connected to an input end of the first ultrasonic transducer, so as to increase an input end voltage of the first ultrasonic transducer, increase an anti-interference capability, and increase a transmission distance.
It should be noted that the ultrasonic working circuit 11 further includes an ultrasonic transmitting end 111 and an ultrasonic receiving end 112, as shown in fig. 2, where the ultrasonic transmitting end 111 includes a first inverter, a first ultrasonic transducer, a first power filter capacitor, and a first pull-up circuit, ends 2Y and 3Y of the first inverter U12 using SN74LS04DR are respectively connected to two ends of the first ultrasonic transducer T1, a 5V power is connected to ground through the first power filter capacitor C39, so as to absorb a large current at the moment of power-on, filter a low-frequency ripple in the power, improve stability of power supply, and connect the 5V power to ends 2Y and 3Y of the first inverter through the first pull-up circuits R20 and R21, respectively, improve a power at a port of the inverter, increase a driving capability thereof, so as to make the ultrasonic wave propagate farther, as shown in fig. 3, ultrasonic receiving end 112 includes second ultrasonic transducer, first receiving chip, first filter capacitor, first RC circuit, first detection electric capacity, first integral capacitor, second power supply filter capacitor, first resistance, first pull-up resistance, first current-limiting resistance, first bypass resistance, first diode, second diode, first isolation capacitor, first receiving chip U13 adopts CX 06, and it comprises preamplifier, limiting amplifier, band pass filter, the radiodetector, integrator, integer circuit, preamplifier wherein has automatic gain control function, can guarantee that the amplifier has higher gain when ultrasonic transducer receives far away reflection signal output weak voltage, the amplifier can not transship when closely input signal is strong, its band pass filter central frequency can be adjusted by chip foot 5's external resistance, its main index: a single power supply 5V supplies power, the voltage gain is 77-79DB, the central frequency of the input impedance 27K omega filter is 30-60KHz, one end of the second ultrasonic transducer T2 is connected with the IN end of the first receiving chip U13, the other end is connected with the ground, the IN end of the first receiving chip U13 is connected with the ground through the first filter capacitor C45, the low-frequency ripple interference IN the filtered signal is ensured to be pure, the AGC end of the first receiving chip U13 is connected with the ground through the first RC circuit R26, C44 to form a negative feedback series network, the gain and frequency characteristics of the preamplifier can be changed by changing the values of the negative feedback series network and the negative feedback series network is increased, the amplification factor is reduced, otherwise, the amplification factor is increased, the C0 end of the first receiving chip U13 is grounded through the first detection capacitor C43, the capacitance is greatly averaged value for detection, the transient response sensitivity is low, and if the capacitance is small, the detection peak value is high, the end C of the first receiving chip U13 is connected with the ground through the first integrating capacitor C42, the capacitor influences the detection distance, the 5V power supply is connected with the end RC0 of the first receiving chip U13 through the first resistor R22 and is used for setting the central frequency f0 of the band-pass filter, the larger the resistance value is, the lower the central frequency is, the 5V power supply is connected with the ground through the second power supply filtering capacitor C40 to filter the low-frequency ripple interference IN the power supply and ensure the stable power supply, the first pull-up resistor R23 is connected with the end OUT of the first receiving chip U13 to improve the anti-interference capability of the voltage increase of the output end, the output of the end is high level when no signal is received and is reduced when a signal is received, the end OUT of the first receiving chip U13 is grounded through the first current limiting resistor R24 and the first bypass resistor R25 to control the current of the output signal and bypass the direct current clutter to the ground, the OUT end of the first receiving chip U13 is connected with the anode of the first diode to a 5V power supply, voltage exceeding 5V can flow into the power supply through the diode, the OUT end of the first receiving chip U13 is connected with the cathode of the second diode to the ground, the OUT end of the first receiving chip U13 is connected with the first isolating capacitor C41, and output front and rear end direct current signals are isolated by utilizing the direct current and alternating current characteristics of the capacitor, so that mutual influence is avoided.
In an embodiment of the present invention, the ultrasonic amplifying circuit 12 includes a first operational amplifier, a second feedback resistor, a first current limiting circuit, a first high-gain amplifier, a third feedback resistor, a fourth power filter capacitor, a second high-gain amplifier, a fifth power filter capacitor, a fourth current limiting resistor, and a second operational amplifier, wherein an output terminal of the first operational amplifier is connected to an input terminal of the first current limiting circuit, a feedback terminal of the first operational amplifier is connected to the second feedback resistor, and adjusts an output according to a feedback voltage, an output terminal of the first current limiting circuit is connected to an input terminal of the first high-gain amplifier, an input terminal of the third feedback resistor is connected to a feedback terminal of the first high-gain amplifier, an output terminal of the fourth power filter capacitor is connected to a power supply terminal of the first high-gain amplifier, an output terminal of the first high-gain amplifier is connected to an input terminal of the second high-gain amplifier, an output terminal of the fifth power filter capacitor is connected to a power supply terminal of the second high-gain amplifier, and an output terminal of the second high-gain amplifier is connected to an input terminal of the second high-gain amplifier via the fourth current limiting resistor.
It should be noted that, as shown IN fig. 4, the ultrasonic amplifying circuit 12 further includes a fourth pull-up resistor, a first inductor, a first voltage divider circuit, the first operational amplifier U14 is a composite and HDTV compatible, a circuit feedback, a video operational amplifier AD810ANZ, a 5V power supply is connected to the ground through the first inductor L2 via the fourth pull-up resistor R27, the + IN terminal of the first operational amplifier U14 and the fourth pull-up resistor R27 are connected to the middle terminal of the first inductor L2, the voltage at the input terminal is increased to increase the interference rejection capability, the inductor ground bypasses the dc to the ground, the-IN terminal of the first operational amplifier U14 is connected to the OUTPUT terminal of the first operational amplifier U14 via the second feedback resistor R28, the voltage at the OUTPUT terminal is input to the negative input terminal via a feedback resistor to regulate and control the OUTPUT to be smooth, the OUTPUT terminal of the first operational amplifier U14 is connected to the OUTPUT terminal via the first current limiting circuit R29, R30 and the OUTPUT terminal of the first operational amplifier U15, the power supply V5V is connected to the negative input terminal of the power supply via the second feedback resistor R28, the power supply, the third operational amplifier U5V 15, the third operational amplifier V terminal is connected to the third operational amplifier U2, the third operational amplifier C8, the high gain amplifier C8 is connected to filter circuit, the third operational amplifier C8 and the third operational amplifier C6, the filter circuit for filtering the low frequency gain amplifier U2 for filtering the low frequency gain amplifier U14, the low frequency gain amplifier U2 for filtering and filtering noise, the low frequency noise, the second operational amplifier U6, the high gain amplifier U6 and the high gain amplifier U6, the second operational amplifier U6 and the third operational amplifier for filtering amplifier U6, the slow-down current protection amplifier is characterized IN that a 5V power supply is connected with the ground through the first voltage division circuits R34 and R33, the + IN end of the second operational amplifier U17 is connected with the middle ends of the first voltage division circuits R34 and R33, so that the input end can obtain proper voltage, the anti-interference capacity is improved, the-IN end of the second operational amplifier U17 is connected with the OUTPUT end of the second operational amplifier U17, and the amplifier performs negative feedback regulation, so that the OUTPUT is more stable.
In an embodiment of the present invention, the audio collecting circuit 2 includes an audio working circuit 21 and an audio amplifying circuit 22, the audio working circuit 21 includes a first microphone, a first triode, a second RC circuit, a first capacitor, a second pull-up resistor, a second current limiting resistor, a first feedback resistor, a first resistor, a second capacitor, and a second isolation capacitor, an output terminal of the first microphone is connected to a base of the first triode through the first capacitor, a 5V power supply is connected to a collector of the first triode through the second pull-up resistor, the second current limiting resistor, the output terminal of the first microphone is connected to a 5V power supply through the second RC circuit, a collector of the first triode is connected to the base of the first feedback resistor through the first feedback resistor, a collector of the first triode is grounded through the second capacitor and the first resistor, an emitter of the first triode is connected to ground, and a control terminal of the first resistor is connected to the second isolation capacitor.
It should be noted that, as shown in fig. 5, pin 1 of the first microphone MK1 is connected to R13 and C23 of the second RC circuit, so as to filter low-frequency noise of a signal and ensure signal purity, pin 2 of the first microphone MK1 is connected to ground, so that a negative electrode of the microphone is in a stable low-level state, pin 1 of the first microphone MK1 is connected to a base of the first triode Q1 through the first capacitor C24, so as to filter direct-current noise, a 5V power supply is connected to the second current-limiting resistor R15 through the second pull-up resistor R12, the second current-limiting resistor R15 is connected to a collector of the first triode Q1, when a base of the triode is signaled, a collector of the first triode Q1 is connected to a base of the first triode Q1 through the first feedback resistor R14, so as to control the magnitude of a current after conducting operation, the collector of the first triode Q1 is connected to the base of the first triode Q1 through the first feedback resistor R14, so as to improve the stability of conducting operation of the triodes, the collector of the first triode Q1 is connected to a collector of the second capacitor C25 and a collector of the first triode Q1, and a collector of the second resistor RP1 is connected to a dc-blocking resistor RP1, so as to prevent the upper end of the first triode Q1 from being connected to ground, and the front end of the dc signal emitting end of the second resistor RP1, and the second resistor RP 1.
In an embodiment of the present invention, the audio amplifying circuit 22 includes a voltage amplifying circuit 221 and a meter amplifying circuit 222, an output end of the voltage amplifying circuit 221 is connected to an input end of the vibration collecting circuit 3, and an input end of the meter amplifying circuit 222 and an output end of the audio operating circuit 21 amplify the received audio signal.
It should be noted that, as shown IN fig. 6, the voltage amplifying circuit 221 includes the first voltage amplifier, a first pull-down circuit, a third current-limiting resistor, a first schottky diode, a second capacitor, a second filter capacitor, a third isolation capacitor, a third RC circuit, a second pull-up circuit, and a third pull-up resistor, the first voltage amplifier U9 employs a high-gain voltage amplifier LM324N having a differential input and a single-ended output, the 1OUT and 2IN + terminals of the first voltage amplifier U9 are respectively connected through the first pull-down circuits R20, R21, R19 and ground to ensure a low-level state when no signal is present at the port, the 2IN + terminal of the first voltage amplifier U9 is connected through the third current-limiting resistor R22 and the positive electrode of the first schottky diode, the AD input is connected to the negative electrode of the first schottky diode to ensure unidirectional conduction of the input, the 2IN + terminal of the first voltage amplifier U9 is connected through the second current-limiting resistor R22 and the positive electrode of the first schottky diode, the AD input terminal is connected to the negative electrode of the first schottky diode R20, R21, R19 and ground to ensure stable absorption of the signal input through the second voltage amplifier U9, the second pull-up-resistor R23, the reverse-protection circuit is connected through the second resistor R4 and the second pull-resistor R23, the second resistor R23, the front end and the rear end of a signal are guaranteed not to be interfered by a direct current signal, the second filter capacitor C32 is connected with the 4IN + end of the first voltage amplifier U9 to filter high-frequency clutter IN a signal source, and a 1.6V power supply is connected with the 3IN + end of the first voltage amplifier U9 through the third pull-up resistor R26 to improve the voltage of the signal end and enhance the anti-interference capability; as shown IN fig. 7, the instrument amplifier circuit 222 includes the first instrument amplifier, a second resistor, a second pull-down circuit, a third power filter capacitor, and a third filter capacitor, the first instrument amplifier U8 employs a laser trimming, and a low-power-consumption and high-precision universal instrument amplifier INA128P with very low bias voltage, temperature drift, and high common-mode rejection, the 1-pin RG of the first instrument amplifier U8 is connected to the right end of the second resistor RP2, the 8-pin RG of the first instrument amplifier U8 is connected to the middle sliding end of the second resistor RP2, which sets different gains for the gain setting end according to the magnitude of the resistance value, the IN and IN + ends of the first instrument amplifier U8 are connected to ground through the second pull-down circuits R16 and R17, respectively, so as to ensure that the signal-free port is low-level to prevent false recognition, the 5V power supply is connected to the + V end of the first instrument amplifier U8, and is connected to ground through the third power filter capacitor, so as to absorb the transient interference IN the power supply, and filter the low-frequency noise of the first instrument amplifier U8, and the third power supply is connected to improve the stability of the low-frequency noise amplifier chip.
In an embodiment of the present invention, the vibration acquisition circuit 3 includes a vibration working circuit 31 and an AD conversion circuit 32, an output end of the vibration working circuit 31 is connected with an input end of the AD conversion circuit 32 to transmit an analog vibration signal, and an output end of the AD conversion circuit 32 is connected with an input end of the main control circuit 4 to convert the analog signal into a digital signal and transmit the digital signal to the main control.
It should be noted that, as shown in fig. 8, the shock operating circuit 31 includes a first acceleration sensor, a fourth filter capacitor, and a third pull-up circuit, where the first acceleration sensor U102 employs a 3-axis digital output acceleration sensor ADXL345 based on the mems technology, a VCC terminal of the first acceleration sensor U102 is connected to ground through the fourth filter capacitor, so as to absorb a large current impact protection chip at the moment of power-on, filter out interference of low-frequency ripple, and improve stability of power supply, and a 3.3V power supply is connected to an SCL terminal and an SDA terminal of the first acceleration sensor U102 through the third pull-up circuits R19 and R18, so that a clock terminal and a data terminal are powered on and then have high levels, thereby improving anti-interference capability during data transmission and increasing a distance of signal transmission; as shown in fig. 9, the AD conversion circuit 32 includes a first AD conversion chip, a sixth power filter capacitor, and a seventh power filter capacitor, the first AD conversion chip U11 adopts low power consumption and 4 channels, and sequentially converts the external 4-channel analog input signal in the continuous conversion mode, the 12-bit serial analog-to-digital conversion chip MAX1247 with abundant on-chip resources, the 3.3V power supply is connected to ground through the sixth power filter capacitor C37, the 1.6V power supply is connected to ground through the seventh power filter capacitor C36, the VDD and VREFR terminals of the first AD conversion chip U11 are respectively connected to the 3.3V and 1.6V power supplies, so as to absorb the instantaneous large current during power-up, filter the low-frequency ripple interference, and ensure the stability of power supply.
In an embodiment of the present invention, an input end of the main control circuit 4 is connected to output ends of the ultrasonic flaw detection circuit 1, the audio acquisition circuit 2, and the vibration acquisition circuit 3, respectively, to obtain three different feedback waveforms of ultrasonic wave, audio frequency, and vibration.
It should be noted that, as shown in fig. 10, the main control circuit 4 includes a first main control chip, a second passive crystal oscillator, a second adapter circuit, a second power filter circuit, a first voltage monitoring chip, a first key, and a fifth filter capacitor, the DSP _ X1 and DSP _ X2 ends of the first main control chip U1 are respectively connected with two ends of the second passive crystal oscillator Y2, the clock signal used for providing a basis for the master control enables the master control to carry out information transmission, two ends of the second passive crystal oscillator are respectively connected with the ground through the second adaptive circuits C4 and C5, the vibration frequency of the crystal oscillator is adjusted by a capacitor to be closer to the set vibration frequency, the first voltage monitor chip U4 employs SP708R, which is a family of microprocessor monitoring circuits that integrate various stand-alone solutions, monitor power and batteries in mP and digital systems, the MR end of the first voltage monitoring chip U4 is connected with the ground through the first key S1, so that manual reset is convenient, when the voltage is lower than 0.8V, the input triggers a reset pulse, the power supply is internally provided with a pull-up current which can be driven by a TTL or CMOS logic line or is short-circuited to the ground by a switch, a 3.3V power supply is connected with a VCC end of the first voltage monitoring chip U4, the 3.3V power supply is respectively connected with GND and PFI ends of the first voltage monitoring chip U4 through the fifth filter capacitor C5, high-frequency noise waves in the power supply are filtered, the power supply stability of the power supply is ensured, when the power supply fails, when the input voltage of the voltage monitor is less than 1.25V, the PFO end becomes low, and the 1.6V power supply is respectively connected with the ground through the second power supply filter circuits C20, C21, C22, C23, C24, C25, C26, C27, C28 and C29, so that the high current at the moment of electrifying is absorbed to protect the main control chip, the low-frequency ripple interference in the power supply is filtered, and the voltage stabilization effect is achieved.
In an embodiment of the present invention, the USB communication device further includes a detection circuit 7 and an interface conversion circuit 8, an output end of the main control circuit 4 is connected to an input end of the detection circuit 7, an output end of the detection circuit 7 is connected to an input end of the interface conversion circuit 8, data is transmitted to the interface conversion circuit 8, and a user can directly read the data through a USB interface.
It should be noted that, as shown in fig. 13, the detection circuit 7 includes a first sensor chip, a first pull-down resistor, a fourth pull-up circuit, and a first power filter circuit, an ADDR end of the first sensor chip U23 is connected to ground through the first pull-down resistor R46, so as to ensure that the port is at a low level in an inoperative state, 3.3V is connected to SCL and SDA ends of the first sensor chip U23 through the fourth pull-up circuits R47 and R48, respectively, so as to improve the levels of a clock end and a data end, increase the anti-interference capability, the 3.3V power is connected to VDD and nrest ends of the first sensor chip U23, and the 3.3V power is connected to ground through the first power filter circuits C58 and C59, so that a large capacitor absorbs the current impact at the moment of power supply to protect the chip safety, a small capacitor filters low-frequency interference, and improves the stability of power supply; as shown in fig. 14, the interface switching circuit 8 includes a first switching chip, a first passive crystal oscillator, a first adapter circuit, a fifth pull-up resistor, a first matching circuit, and a first USB interface, where the first switching chip U2 is a highly integrated RS232-USB interface converter, and can provide a solution for facilitating connection of an RS232 full duplex asynchronous serial communication device with a USB functional interface, ends OSC2 and OSC1 of the first switching chip U2 are connected to ends OSC Y1 of the first passive crystal oscillator, so as to ensure that the crystal oscillator starts to provide a corresponding clock cycle, ends DM and DP of the first switching chip U2 are connected to ends 2 and 3 of the first USB interface through ends C1 and C2 of the first matching circuit, so as to make the frequency of the crystal oscillator start to better meet circuit requirements, ends DM and DP of the first switching chip U2 are connected to ends R2 and R3 of the first matching circuit, respectively, so as to reduce signal refraction and improve transmission efficiency, and the 5V power supply is connected to ends 2 and 3 of the first USB interface through the fifth pull-up resistor, so as to improve the voltage immunity of the USB interface.
In an embodiment of the present invention, the apparatus further includes a power supply circuit 6, an input terminal of the power supply circuit 6 is connected to a power supply terminal of the memory circuit 5, a data terminal of the memory circuit 5 is electrically connected to a data terminal of the main control circuit 4, and the three types of waveform information received by the main control circuit 4 are stored.
It should be noted that, as shown IN fig. 11 and 12, the memory circuit 5 and the power circuit 6 include a first memory chip, a first dual-way low dropout regulator, a sixth filter capacitor, a seventh filter capacitor, a third power filter circuit, a second voltage divider circuit, a first reset circuit, and a fourth power filter circuit, the first memory chip U5 employs MT48LC4M16A2, which conforms to the standards of PC66, PC100, and PC133, can automatically precharge, include concurrent auto-precharge and auto-refresh modes, operate IN an internal pipeline, can change column addresses every clock cycle, the 3.3V power source is respectively connected to VDD, VDDQ, VSS, VSSQ, and CKE terminals of the first memory chip U5, the first dual-way low dropout regulator U21 employs a dual-way low dropout regulator TPS767D301, has a dual-way output capable of supplying power independently, and has a fixed output voltage of 3.3V, the other output voltage can be adjusted, the range is 1.5-5.5V, the voltage difference is IN direct proportion to the output current, the regulator has ultra-low typical quiescent current, each regulator has an open-drain reset output, and each regulator has a temperature automatic closing protection function, a 5V power supply is connected with an IN1 end of the first dual low dropout regulator U21 and is connected with the ground through the sixth filter capacitor C5, the 5V power supply is connected with an IN2 end of the first dual low dropout regulator U21 and is connected with the ground through the seventh filter capacitor C6, the power supply protection chip is stably supplied by absorbing large current impact at the moment of power-on, an OUT1 end of the first dual low dropout regulator U21 is connected with the ground through the second voltage division circuits R9 and R10, an FB end of the first dual low dropout regulator U21 is connected with the middle ends of the two resistors of the second voltage division circuits R9 and R10, and FB is a feedback end for adjusting the output voltage, the output voltage is obtained through a voltage division circuit and then adjusted, the output stability is improved, the OUT1 end of the first double-circuit low-voltage difference adjuster U21 is connected with the ground through the third power supply filter circuits C7, C8 and C9 respectively, a large capacitor absorbs large current at the moment of output, a small capacitor filters low-frequency ripple interference, and the stability of a power supply is improved, the RESET2 end of the first double-circuit low-voltage difference adjuster U21 is connected with the ground through the first RESET circuits R11 and C12, the capacitor is equivalent to short circuit at the moment of power-on, the RESET2 end is at a low level at the moment, the capacitor is equivalent to open circuit after being charged stably, the RESET2 end is at a high level at the moment, and in view of the characteristic of the capacitor, the RESET action is automatically completed after power-on, the OUT2 end of the first double-circuit low-voltage difference adjuster U21 is connected with the ground through the fourth power supply filter circuits C10 and C11 respectively, so that the large current at the moment of chip output is absorbed, and smooth and stable power supply is guaranteed.
In an embodiment of the present invention, the cloud computing system further includes a communication circuit 9, wherein a data end of the communication circuit 9 is connected to a data end of the main control circuit 4, and sends data to a server to perform cloud backup on the waveform parameters.
It should be noted that, as shown in fig. 15, the communication circuit 9 includes a first communication chip, an eighth filter capacitor, a second pull-down resistor, a third passive crystal oscillator, a second resistor, a third adapter circuit, a first filter circuit, a first inductor, a second inductor, a third inductor, a fourth isolation capacitor, a ninth filter capacitor, and a first antenna, where Si24R1_ JX adopted by the first communication chip U24 is a wireless transceiver chip designed for low power consumption wireless applications, and operates in a 2.4GHz ISM band, and has 126 channels with a bandwidth of 1MHz in total, a DVDD end of the first communication chip U24 is connected to ground through the eighth filter capacitor, an IREF end of the first communication chip U24 is connected to ground through the second pull-down resistor R50, and in a non-operating state, the port is at a low level to avoid erroneous determination, the XC1 and XC2 ends of the first communication chip U24 are respectively connected with two ends of the third passive crystal oscillator Y3 to provide a clock signal for the chip, two ends of the third passive crystal oscillator Y3 are respectively connected with the ground through the third adaptive circuits C61 and C62 through two ends of the second resistor R51, the frequency is more accurate by using an adaptive capacitor according to the set clock frequency, the VDD _ PA end of the first communication chip U24 is respectively connected with the ground through the first filter circuits C63 and C64 to absorb high-frequency noise in the circuit, the ANT1 end of the first communication chip U24 is connected with the VDD _ PA end of the first communication chip U24 through the second inductor L5, the ANT2 end of the first communication chip U24 is connected with the ANT1 end of the first communication chip U24 through the first inductor L4, and the ANT2 end of the first communication chip U24 is connected with the fourth isolation capacitor C65 through the third inductor L6, the fourth isolation capacitor C65 is connected to ground through the ninth filter capacitor, and the fourth isolation capacitor C65 is connected to the 1-terminal of the first antenna, so as to isolate the front and rear dc signals and ensure that the dc signals are not affected.
Although the present disclosure has been described above, the scope of the present disclosure is not limited thereto. Various changes and modifications may be effected therein by one of ordinary skill in the pertinent art without departing from the spirit and scope of the present disclosure, and these changes and modifications are intended to be within the scope of the present disclosure.
Claims (10)
1. The utility model provides an industrial equipment intelligent detection system, a serial communication port, including ultrasonic inspection circuit (1), audio frequency acquisition circuit (2), vibrations acquisition circuit (3), master control circuit (4), memory circuit (5), the input of master control circuit (4) with the output of ultrasonic inspection circuit (1) is connected, receives the flaw detection signal of ultrasonic wave feedback, the output of audio frequency acquisition circuit (2) with the input of master control circuit (4) is connected, sends audio frequency feedback wave form, the input of master control circuit (4) with the output of vibrations acquisition circuit (3) is connected, receives the contrast of three kinds of different wave forms of ultrasonic wave, audio frequency, vibrations and normal back wave, the output of master control circuit (4) with the input of memory circuit (5) is connected, sends unusual data to the storage record in memory circuit (5).
2. The industrial equipment intelligent detection system according to claim 1, wherein the ultrasonic flaw detection circuit (1) comprises an ultrasonic working circuit (11) and an ultrasonic amplification circuit (12), the ultrasonic working circuit (11) comprises a first inverter, a first ultrasonic transducer, a first power supply filter capacitor and a first pull-up circuit, an output end of the first inverter is connected with an input end of the first ultrasonic transducer, a sinusoidal square wave is output to drive the first ultrasonic transducer to work, an output end of the first power supply filter capacitor is connected with an input end of the first pull-up circuit, and an output end of the first pull-up circuit is connected with an input end of the first ultrasonic transducer, so that input interference resistance of the first ultrasonic transducer is improved, and terminal voltage capacity and transmission distance are increased.
3. The industrial equipment intelligent detection system according to claim 2, wherein the ultrasonic amplification circuit (12) comprises a first operational amplifier, a second feedback resistor, a first current limiting circuit, a first high gain amplifier, a third feedback resistor, a fourth power filter capacitor, a second high gain amplifier, a fifth power filter capacitor, a fourth current limiting resistor, and a second operational amplifier, wherein an output terminal of the first operational amplifier is connected to an input terminal of the first current limiting circuit, a feedback terminal of the first operational amplifier is connected to the second feedback resistor, an output terminal of the first current limiting circuit is connected to an input terminal of the first high gain amplifier, an input terminal of the third feedback resistor is connected to a feedback terminal of the first high gain amplifier, an output terminal of the fourth power filter capacitor is connected to a power supply terminal of the first high gain amplifier, an output terminal of the first high gain amplifier is connected to an input terminal of the second high gain amplifier, an output terminal of the fifth power filter capacitor is connected to a feedback terminal of the second high gain amplifier, and an output terminal of the second high gain amplifier is connected to an input terminal of the fourth current limiting amplifier via the current limiting resistor.
4. The industrial equipment intelligent detection system according to claim 1, wherein the audio acquisition circuit (2) comprises an audio working circuit (21) and an audio amplification circuit (22), the audio working circuit (21) comprises a first microphone, a first triode, a second RC circuit, a first capacitor, a second pull-up resistor, a second current limiting resistor, a first feedback resistor, a first resistor, a second capacitor and a second isolation capacitor, an output end of the first microphone is connected with a base of the first triode through the first capacitor, a 5V power supply is connected with a collector of the first triode through the second pull-up resistor, the second current limiting resistor, an output end of the first microphone is connected with the 5V power supply through the second RC circuit, a collector of the first triode is connected with a base through the first feedback resistor, a collector of the first triode is grounded through the second capacitor and the first resistor, an emitter of the first triode is connected with the ground, and a control end of the first resistor is connected with the second isolation capacitor.
5. The intelligent industrial equipment detection system according to claim 4, wherein the audio amplification circuit (22) comprises a voltage amplification circuit (221) and a meter amplification circuit (222), an output end of the voltage amplification circuit (221) is connected with an input end of the vibration acquisition circuit (3), and an input end of the meter amplification circuit (222) and an output end of the audio working circuit (21) amplify the received audio signal.
6. The industrial equipment intelligent detection system according to claim 1, wherein the vibration acquisition circuit (3) comprises a vibration working circuit (31) and an AD conversion circuit (32), an output end of the vibration working circuit (31) is connected with an input end of the AD conversion circuit (32) to transmit an analog vibration signal, and an output end of the AD conversion circuit (32) is connected with an input end of the main control circuit (4) to convert the analog signal into a digital signal and transmit the digital signal to the main control.
7. The intelligent industrial equipment detection system according to claim 1, wherein the input end of the main control circuit (4) is respectively connected with the output ends of the ultrasonic flaw detection circuit (1), the audio acquisition circuit (2) and the vibration acquisition circuit (3) to obtain three different feedback waveforms of ultrasonic wave, audio and vibration.
8. The intelligent industrial equipment detection system according to claim 1, further comprising a detection circuit (7) and an interface conversion circuit (8), wherein an output end of the main control circuit (4) is connected with an input end of the detection circuit (7), an output end of the detection circuit (7) is connected with an input end of the interface conversion circuit (8), data is transmitted to the interface conversion circuit (8), and a user can directly read the data through a USB interface.
9. The industrial equipment intelligent detection system according to claim 1, further comprising a power supply circuit (6), wherein an input terminal of the power supply circuit (6) is connected with a power supply terminal of the storage circuit (5), a data terminal of the storage circuit (5) is electrically connected with a data terminal of the main control circuit (4), and the three types of waveform information received by the main control circuit (4) are stored.
10. The industrial equipment intelligent detection system according to claim 1, further comprising a communication circuit (9), wherein a data terminal of the communication circuit (9) is connected with a data terminal of the main control circuit (4), and the data is sent to a server to perform cloud backup on the waveform parameters.
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| CN202211254112.0A CN115542814A (en) | 2022-10-13 | 2022-10-13 | Intelligent detection system for industrial equipment |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN116597770A (en) * | 2023-04-25 | 2023-08-15 | 深圳康易世佳科技有限公司 | Interactive wisdom LED display screen |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN116597770A (en) * | 2023-04-25 | 2023-08-15 | 深圳康易世佳科技有限公司 | Interactive wisdom LED display screen |
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