CN217845396U - Novel vibration detection circuit - Google Patents
Novel vibration detection circuit Download PDFInfo
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- CN217845396U CN217845396U CN202222119110.2U CN202222119110U CN217845396U CN 217845396 U CN217845396 U CN 217845396U CN 202222119110 U CN202222119110 U CN 202222119110U CN 217845396 U CN217845396 U CN 217845396U
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Abstract
The utility model provides a novel vibration detection circuit, include: the device comprises a power supply circuit, a signal input processing circuit, a high-performance low-power consumption MCU and a signal output circuit; the power supply circuit supplies power for the signal input processing circuit, the high-performance low-power consumption MCU and the signal output circuit respectively; the utility model discloses a vibration measurement of equipment such as motor, fan, compressor, pump, including AD sampling original waveform, carry out digital detection, can carry out various digital algorithm, be suitable for multiple signal, various waveform, the detection precision is higher moreover, owing to adopt high performance low-power consumption MCU, makes things convenient for the modification of parameter, uses more in a flexible way, can be used to electric power, trades such as chemical industry, steel, fan, compressor, pump, and the practicality is excellent.
Description
Technical Field
The utility model relates to an electronic equipment technical field especially relates to a novel vibration detection circuit.
Background
The measurement indexes of the object vibration comprise vibration acceleration, vibration speed and vibration displacement. Where the vibration velocity is the integral of the vibration acceleration and the vibration displacement is the integral of the vibration velocity. Generally, the measured physical quantities are different according to different measurement types and comprise peak values of vibration acceleration measurement acceleration, effective values of vibration speed measurement speed and peak values of vibration displacement measurement displacement.
At present, the peak value and peak-peak value detection method in the market is composed of discrete components and operational amplifiers. The effective value detection adopts a special module, and the peak detection is one of the common AC/DC conversion circuits. The AC-DC conversion circuit constructed by the peak detection method performs half-wave or full-wave rectification on an AC signal, a charging capacitor is used for keeping the peak value of a pulsating DC signal output by rectification to obtain a gentle DC signal, the amplitude of the DC signal is the peak value of the AC signal to be detected, the peak detection is generally based on the one-way conductivity of a diode, the maximum value can be kept for a period of time after the input AC signal passes through the diode, the length of the keeping time is adjusted by the size of a resistor and a capacitance value, the kept value is the peak value, the peak detection is the same as the peak detection principle, the circuit is similar, the peak value is generally 2 times of the peak value, and the peak detection can replace the peak detection in most cases.
The effective value detection can be realized by a peak value method or a special chip, wherein the peak value method is that the output direct current voltage of the peak value detection is divided by a peak value factor of a corresponding waveform, for example, a sine wave is 1.414, a square wave is 1, and a triangular wave is 1.73. There are few professional detection chips in the market, and the company mainly provided is ADI company, and RMS-DC conversion series chips for the company, that is, effective value to direct current conversion chips, mainly have models of AD536, AD636, AD736, LTC1966, AD8436, and the like. The chip is internally integrated with an RMS (root mean square) kernel and used for calculating an effective value. The signal effective value is generally equivalent to the direct voltage that produces the same thermal power on the load, and is generally defined as the square root of the average of the sum of the squares of the peaks of any waveform.
The defects of the prior art are as follows: the effective value measured by adopting a peak value method is different in peak value factors of different waveforms, so that the same circuit cannot be suitable for other signals; the peak value, peak-peak value and effective value detection module cannot be used universally; the parameter modification is inconvenient, a hardware circuit needs to be changed, and the cost is high, so that the method has the defects.
In view of the above, there is a need for a novel vibration detection circuit to overcome the shortcomings in the prior art.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a novel vibration detection circuit, the modern design for measure the vibration of object or equipment, not only be suitable for various wave forms, detection precision is higher moreover, and the practicality is excellent.
The utility model discloses a solve the technical scheme that its technical problem adopted and be:
a novel vibration detection circuit comprising: the device comprises a power supply circuit, a signal input processing circuit, a high-performance low-power consumption MCU and a signal output circuit; the power supply circuit supplies power for the signal input processing circuit, the high-performance low-power consumption MCU and the signal output circuit respectively;
the signal input processing circuit is used for buffering before signal output, the signal input processing circuit comprises an operational amplifier U6A and an operational amplifier U6B, the positive phase end of the operational amplifier U6A is connected with a resistor R9, the negative phase end of the operational amplifier U6A is connected with the output end of the operational amplifier U6A through a resistor R8 which is connected in series, the output end of the operational amplifier U6A is connected with the negative phase end of the operational amplifier U6B through a resistor R7 which is connected in series, the negative phase end of the U6B is connected with the output end of the U6B through a resistor R13 which is connected in series, and the output end of the U6B is connected with a pin 6 of the high-performance low-power-consumption MCU;
the high-performance low-power consumption MCU comprises an AD converter and a DA converter; the AD converter converts the vibration signal into a digital signal, the high-performance low-power consumption MCU carries out digital detection on the converted digital signal, and a digital detection value is output to the signal output circuit through the DA converter;
the signal output circuit comprises an operational amplifier U3A and an operational amplifier U3B, wherein the positive phase end of the operational amplifier U3A is connected with the 10 pins of the high-performance low-power-consumption MCU through a series-connected R6, the negative phase end of the operational amplifier U3A is connected with the output end of the operational amplifier U3A through a series-connected R3, the output end of the U3A is connected with a resistor R17, one path of the resistor R17 is connected with the output end of the operational amplifier U3B through a capacitor C16, the other path of the resistor R17 is connected with the positive phase end of the operational amplifier U3B through a resistor R18, the negative phase end of the U3B is connected with the output end of the operational amplifier U3B through a series-connected resistor R16, and the signal output circuit outputs a detection value corresponding to an original signal after amplification and filtering processing.
Further, the power circuit comprises a 3.3V power conversion chip and a-5V power conversion chip, wherein the 3.3V power conversion chip supplies power to the high-performance low-power consumption MCU, and the-5V power conversion chip supplies power to the signal input processing circuit and the signal output circuit respectively.
Further, the type of the 3.3V power supply conversion chip adopts a linear voltage-stabilizing chip XC6206P332MR.
Further, the model of the-5V power conversion chip adopts a charge pump voltage reverser TPS60400DBVR.
Further, the operational amplifier U6A, the operational amplifier U6B, the operational amplifier U3A and the operational amplifier U3B are of the same type and are LM258ADR.
Further, the model adopted by the high-performance low-power consumption MCU is STM32L432KB.
Furthermore, the high-performance low-power consumption MCU is connected with a reset module and is provided with a burning interface.
Further, the reset module is used for resetting the high-performance low-power-consumption MCU, the reset module comprises a fifth capacitor C5 and a fifth resistor R5, one end of the fifth capacitor C5 is electrically connected with 4 pins of the high-performance low-power-consumption MCU, the other end of the fifth capacitor C5 is grounded, one end of the fifth resistor R5 is electrically connected with a combination point of the fifth capacitor C5 and the 4 pins of the high-performance low-power-consumption MCU, and the other end of the fifth resistor R5 is connected with the power circuit.
Further, the high-performance low-power-consumption MCU is electrically connected with a burning interface J1, and the burning interface J1 burns programs into the high-performance low-power-consumption MCU.
The utility model has the advantages of: the novel design, through AD sampling original waveform, carry out digital detection, can carry out various digital algorithm, be suitable for multiple signal, various wave forms, the detection precision is higher moreover, owing to adopt high performance low-power consumption MCU, makes things convenient for the modification of parameter, uses more in a flexible way, can be used to the vibration measurement of equipment such as trades motors such as electric power, chemical industry, steel, fan, compressor, pump, practicality is excellent.
Drawings
FIG. 1 is a control block diagram of the present invention;
fig. 2 is a schematic diagram of the signal input processing circuit of the present invention.
Fig. 3 is the utility model discloses high performance low-power consumption MCU schematic diagram.
Fig. 4 is a schematic diagram of the reset module of the present invention.
Fig. 5 is a schematic diagram of the burning interface of the present invention.
Fig. 6 is a schematic diagram of the signal output circuit of the present invention.
Fig. 7 is a schematic diagram of the 3.3V power conversion chip of the present invention.
Fig. 8 is a schematic diagram of the-5V power conversion chip of the present invention.
Detailed Description
In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand, the present invention will be further described with reference to the drawings and the specific embodiments.
As shown in fig. 1, a novel vibration detection circuit comprises a power circuit, a signal input processing circuit, a high-performance low-power consumption MCU, and a signal output circuit; the power supply circuit supplies power for the signal input processing circuit, the high-performance low-power consumption MCU and the signal output circuit respectively; the high-performance low-power consumption MCU is a processor U1.
The signal input processing circuit shown in fig. 2 mainly functions as a buffer for signal output and AD module interface signal conditioning of the processor U1 to be suitable for AD output level, and includes an operational amplifier U6A and an operational amplifier U6B, a positive phase end of the operational amplifier U6A is connected to a resistor R9, a negative phase end of the operational amplifier U6A is connected to an output end of the operational amplifier U6A through a resistor R8 connected in series, an output end of the operational amplifier U6A is connected to a negative phase end of the operational amplifier U6B through a resistor R7 connected in series, a negative phase end of the operational amplifier U6B is connected to an output end of the operational amplifier U6B through a resistor R13 connected in series, an output terminal line SV1 of the operational amplifier U6B is connected to a pin 6 of the high-performance low-power-consumption MCU, and both the operational amplifier U6A and the operational amplifier U6B employ LM258ADR.
As shown in fig. 3, the high-performance low-power consumption MCU is a processor U1, the selected MCU is a high-performance low-power consumption MCU with a model of STM32L432KB or STM32L432KBU6 or the like, and the MCU mainly performs AD data acquisition and data processing, performs digital detection, and outputs the digital detection value to a signal output circuit through DA conversion; the highest dominant frequency of the selected MCU can reach 80MHZ, and a floating point processing unit is provided, an AD converter is provided, AD with 16-bit precision is achieved through sampling, DA with 12 bits is provided, the MCU has high dominant frequency and the floating point processing unit is provided, so that data can be processed more efficiently, more algorithms are operated, the requirement of the whole system is met, the unit price of each thousand of the high-performance low-power consumption MCU is about ten yuan, all circuits are integrated, the cost is greatly reduced, the high-performance low-power consumption MCU is convenient to modify parameters, hardware circuit parameters do not need to be modified, and the MCU is more flexible to use.
As shown in fig. 4, the processor U1 is electrically connected to a reset module, and the reset module is connected to the power circuit for resetting the processor U1. Specifically, the reset module includes a fifth capacitor C5 and a fifth resistor R5, one end of the fifth capacitor C5 is electrically connected to 4 pins of the processor U1, the other end of the fifth capacitor C5 is grounded, one end of the fifth resistor R5 is electrically connected to a junction point of the fifth capacitor C5 and the 4 pins of the processor U1, and the other end is connected to the power circuit, as shown in fig. 5, the processor U1 is electrically connected to a burning interface J1, and a user can burn a program into the processor U1 through the burning interface J1.
The signal output circuit shown in fig. 6 mainly has the functions of outputting the magnitude of a detected wave value after detection, the signal output circuit has the functions of signal amplification, filtering and signal buffering, the signal output circuit includes an operational amplifier U3A and an operational amplifier U3B, a positive phase end of the operational amplifier U3A is connected with the 10 pins of the high-performance low-power consumption MCU through series-connected R6, a negative phase end of the operational amplifier U3A is connected with an output end of the operational amplifier U3A through series-connected R3, an output end of the U3A is connected with a resistor R17, one path of the resistor R17 is connected with an output end of the operational amplifier U3B through a capacitor C16, the other path of the resistor R17 is connected with a positive phase end of the operational amplifier U3B through a resistor R18, a negative phase end of the U3B is connected with an output end of the operational amplifier U3B through a resistor R16 in series-connected, the signal output circuit outputs a value corresponding to an original signal after amplification and filtering, and the operational amplifier U3A detected wave value adopts an ADR 258.
The power circuit comprises a 3.3V power conversion chip U0 and a-5V power conversion chip U2, as shown in FIG. 7, the 3.3V power conversion chip U0 adopts a linear voltage stabilization chip XC6206P332MR to supply power for the high-performance low-power consumption MCU, as shown in FIG. 8, the-5V power conversion chip U2 adopts a charge pump voltage reverser TPS60400DBVR to respectively supply power for the signal input processing circuit and the signal output circuit.
The utility model discloses a theory of operation does: the high-performance low-power consumption MCU comprises an AD converter and a DA converter, an analog signal acquired by the signal input processing circuit is converted into a digital signal by the AD converter, the digital signal is digitally detected by the high-performance low-power consumption MCU, the digital detection comprises peak detection, peak-peak detection and effective value detection, the digital detection value is output to the signal output circuit through the DA converter, and the signal output circuit amplifies and filters the signal and then outputs a detection value corresponding to the original signal.
The utility model can be applied to various waveforms by digital detection and digital algorithm, and has higher detection precision; the current detection module can be suitable for a certain type of signal waveform, hardly is suitable for multiple waveform, the utility model discloses a AD sampling original waveform carries out digital detection, can carry out various digital algorithm, is suitable for multiple signal, and adopts high performance low-power consumption MCU, makes things convenient for the modification of parameter, uses more in a flexible way, can be used to the vibration measurement of equipment such as trades motors, fans, compressors, pumps such as electric power, chemical industry, steel, and the practicality is excellent.
The various embodiments described above are merely illustrative, and may or may not be physically separate, as they relate to elements illustrated as separate components; if reference is made to a component displayed as a unit, it may or may not be a physical unit, i.e. it may be located in one place, or it may be distributed over a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment. One of ordinary skill in the art can understand and implement it without inventive effort.
The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: modifications of the technical solutions described in the embodiments or equivalent replacements of some technical features may still be made. And such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Finally, it should be noted that the present invention is not limited to the above alternative embodiments, and that various other forms of products can be obtained by anyone in light of the present invention. The above detailed description should not be taken as limiting the scope of the invention, which is defined in the claims, and which the description is intended to be interpreted accordingly.
Claims (9)
1. A novel vibration detection circuit, comprising: the device comprises a power supply circuit, a signal input processing circuit, a high-performance low-power consumption MCU and a signal output circuit;
the power supply circuit supplies power for the signal input processing circuit, the high-performance low-power consumption MCU and the signal output circuit respectively;
the signal input processing circuit is used for buffering before signal output and comprises an operational amplifier U6A and an operational amplifier U6B, the positive phase end of the operational amplifier U6A is connected with a resistor R9, the negative phase end of the operational amplifier U6A is connected with the output end of the operational amplifier U6A through a resistor R8 in series, the output end of the operational amplifier U6A is connected with the negative phase end of the operational amplifier U6B through a resistor R7 in series, the negative phase end of the U6B is connected with the output end of the U6B through a resistor R13 in series, and the output end of the U6B is connected with a pin 6 of a high-performance low-power-consumption MCU;
the high-performance low-power consumption MCU comprises an AD converter and a DA converter; the AD converter converts the vibration signal into a digital signal, the high-performance low-power consumption MCU carries out digital detection on the converted digital signal, and a digital detection value is output to the signal output circuit through the DA converter;
the signal output circuit comprises an operational amplifier U3A and an operational amplifier U3B, wherein the positive phase end of the operational amplifier U3A is connected with the 10 pins of the high-performance low-power-consumption MCU through serially connected R6, the negative phase end of the operational amplifier U3A is connected with the output end of the operational amplifier U3A through serially connected R3, the output end of the U3A is connected with a resistor R17, one path of the resistor R17 is connected with the output end of the operational amplifier U3B through a capacitor C16, the other path of the resistor R17 is connected with the positive phase end of the operational amplifier U3B through a resistor R18, the negative phase end of the U3B is connected with the output end of the operational amplifier U3B through a serially connected resistor R16, and the signal output circuit outputs a detection value corresponding to an original signal after amplification and filtering processing.
2. The novel vibration detection circuit according to claim 1, wherein the power circuit comprises a 3.3V power conversion chip, a-5V power conversion chip, the 3.3V power conversion chip supplies power to the high-performance low-power consumption MCU, and the-5V power conversion chip supplies power to the signal input processing circuit and the signal output circuit, respectively.
3. The novel vibration detection circuit as claimed in claim 2, wherein the 3.3V power conversion chip is a linear voltage regulation chip XC6206P332MR.
4. The novel vibration detection circuit of claim 2, wherein said-5V power conversion chip model employs a charge pump voltage inverter TPS60400DBVR.
5. The novel vibration detection circuit according to claim 1, wherein the operational amplifier U6A, the operational amplifier U6B, the operational amplifier U3A and the operational amplifier U3B are of the same type, and are LM258ADR.
6. The novel vibration detection circuit according to claim 1, wherein the high-performance low-power consumption MCU is of a type STM32L432KB.
7. The novel vibration detection circuit according to claim 1, wherein the high-performance low-power consumption MCU is connected with a reset module, and a burn interface is arranged on the high-performance low-power consumption MCU.
8. The novel vibration detection circuit according to claim 7, wherein the reset module is used to reset the high-performance low-power MCU, and comprises a fifth capacitor C5 and a fifth resistor R5, one end of the fifth capacitor C5 is electrically connected to 4 pins of the high-performance low-power MCU, the other end of the fifth capacitor C5 is grounded, one end of the fifth resistor R5 is electrically connected to a junction of the fifth capacitor C5 and 4 pins of the high-performance low-power MCU, and the other end is connected to the power circuit.
9. The novel vibration detection circuit according to claim 7, wherein the high-performance low-power consumption MCU is electrically connected to a burning interface J1, and the burning interface J1 burns a program into the high-performance low-power consumption MCU.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222119110.2U CN217845396U (en) | 2022-08-11 | 2022-08-11 | Novel vibration detection circuit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222119110.2U CN217845396U (en) | 2022-08-11 | 2022-08-11 | Novel vibration detection circuit |
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| Publication Number | Publication Date |
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| CN217845396U true CN217845396U (en) | 2022-11-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222119110.2U Active CN217845396U (en) | 2022-08-11 | 2022-08-11 | Novel vibration detection circuit |
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| CN (1) | CN217845396U (en) |
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