CN209181910U

CN209181910U - A kind of shock detection digital processing circuit

Info

Publication number: CN209181910U
Application number: CN201821881594.1U
Authority: CN
Inventors: 苏丹
Original assignee: TIANJIN SHENGDAN ELECTRONIC TECHNOLOGY DEVELOPMENT Co Ltd
Current assignee: TIANJIN SHENGDAN ELECTRONIC TECHNOLOGY DEVELOPMENT Co Ltd
Priority date: 2018-11-15
Filing date: 2018-11-15
Publication date: 2019-07-30
Anticipated expiration: 2028-11-15

Abstract

The utility model provides a kind of shock detection digital processing circuit, it is made of shock sensor HD1 and vibration signal conditioning unit and vibration signal acquisition unit, by circuits such as V1, N1, D1 to the amplification of shock sensor signal, filtering, shaping, vibration signal acquisition unit is AD converted by AD conversion chip N2, accurate fiducial chip N3, the pairs of vibration signal of single-chip microcontroller N4 group, acquired, stored, analyzed, data processing vibration signal conditioning unit.The sensitivity and reliability that may insure detection make common low cost simulation shock sensor have the performance of intelligence sensor.

Description

A kind of shock detection digital processing circuit

Technical field

The utility model belongs to electronic technology field, is related to a kind of shock detection digital processing circuit.

Background technique

In electronic technology field, it is frequently present of the case where non electrical quantity is converted into ultra-weak electronic signal by various sensors, And the sensor signal has to pass through corresponding circuit conversion into the analog signal that can reflect original physics flow characteristic, is passing through mould Number switch technology is converted into the signal that single-chip microcontroller is capable of handling.How will shake and is converted into the letter that single-chip microcontroller can identify with sound It number is exactly problem to be solved in the utility model.

Utility model content

In view of this, the utility model is directed to a kind of vibration signal digital processing circuit, for the faint mould of input Quasi- signal, has plus and blowup ability, while being converted into the digital signal that single-chip microcontroller is capable of identifying processing, has number filter Threshold value and upper and lower alarm limit can be arbitrarily arranged in wave, noise suppressing function, so that entire circuit has very strong anti-interference energy Power makes common low cost simulation shock sensor have the performance of intelligence sensor.This circuit may insure high sensitivity, significantly Improve the reliability of measurement.

The technical solution of the utility model is achieved in that

A kind of shock detection digital processing circuit is believed by shock sensor HD1 and sensor signal conditioning unit and vibration Number acquisition unit composition, vibration signal conditioning unit is by circuits such as V1, N1, D1 to shock sensor signal amplification, filtering, whole Shape, shock sensor one end are grounded another termination transistor V1 base stage and resistance R1, R2, and R1 another termination power V+, R2 is another End ground connection, transistor V1 collector meet R3, W1, and W1 center head connects 3 ends of operational amplifier N1, the output of the 2 ends ground connection N1 of N1 C3, R6 are met, the C3 other end is connect with diode D1 anode, and diode D1 cathode is connect with resistance R7, R8, R8 other end ground connection The R7 other end is that shaping circuit output is connected with the input terminal In of acquisition unit N2.Vibration signal acquisition unit by N2, N3, The single-chip microcontroller digital units of N4 composition are AD converted simulation vibration signal, acquire, store, analyze, data processing.HD1 is Shock sensor, signal are a millivolt orders of magnitude, and V1, R1, R2, R3, R4 form preamplifier and carry out first to sensor signal Using high gain operational amplifier N1 the range that single-chip microcontroller is easily processed, R6 is further amplified in signal by grade amplification, the second level Interference signal is inhibited with C2 composition filter, the value of R5 and C1 determines the gain of N1, and diode D1 is by AC signal Rectify and only retain positive half cycle vibration signal, R7 and C4, which constitute filter unit, to be believed by the good vibration of amplification Shape correction It number is sent to digital units and carries out AD conversion, N2 is speed A/D converter, and N3 is accurate fiducial chip, and N4 is singlechip group into height The vibration analog signal that the high-accuracy automatic A/D conversion circuit of speed will test is converted into single-chip microcontroller and is convenient for the digital signal of processing simultaneously It being stored in inside single-chip microcontroller in EEPROM, accurate fiducial chip N3 is ARD435, and single-chip microcontroller N4 is STC series monolithic, in Portion has eeprom memory, and AD conversion N2 is serial line interface 16Bit converter.Single-chip microcontroller believes collected various vibrations Number data analysis and data processing, given threshold and upper and lower alarm limit are carried out, and optimization algorithm detects useful signal, interference letter Number reject, realize digital filtering function, realize highly reliable intelligent shock sensor signal detection, greatly improve detection identification Accuracy, be tradition depend merely on simulation shock sensor circuit it is incomparable.Correspondence shakes each time, the output of amplifier N1 End just obtains a corresponding voltage and is corresponding to it, and the amplitude of vibration is bigger, and the output voltage of amplifier N1 is higher, turns in A/D The numerical value that parallel operation obtains is also big, and vice versa.The frequency range of the utility model is 10H_Z--20KH_Z, it can be ensured that the standard of detection Exactness greatly improves the reliability of survey.The utility model is designed reasonably, especially working sensor ambient noise and interference are stronger When, the strong big data analysis of data acquisition unit, processing capacity make entire detection circuit have very strong anti-interference ability, tool There is wider area detection signal.The circuit is applied in a kind of intelligent safety and defence system, in practice it has proved that detection is sensitive Spend the fast strong antijamming capability of high reaction speed.

Detailed description of the invention

The attached drawing for constituting a part of the utility model is used to provide a further understanding of the present invention, this is practical new The illustrative embodiments and their description of type are not constituteed improper limits to the present invention for explaining the utility model.

Fig. 1 is a kind of shock detection digital processing circuit schematic diagram described in the utility model embodiment；

Fig. 2 is the utility model vibration signal conditioning unit waveform diagram；

Specific embodiment

It should be noted that in the absence of conflict, the feature in the embodiments of the present invention and embodiment can To be combined with each other.

In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " is pacified Dress ", " connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integrally Connection；It can be mechanical connection, be also possible to be electrically connected；Can be directly connected, can also indirectly connected through an intermediary, It can be the connection inside two elements.For the ordinary skill in the art, on being understood by concrete condition State the concrete meaning of term in the present invention.

Illustrate the utility model below with reference to the accompanying drawings and in conjunction with the embodiments.

As shown in Figure 1, the utility model provides a kind of shock detection digital processing circuit, it is characterised in that: including vibration Sensor HD1 and sensor signal conditioning unit and collecting sensor signal unit, the shock sensor signal conditioning unit By circuits such as V1, N1, D1 to the amplification of shock sensor signal, filtering, shaping, by mono- operational amplifier N1 of a transistor V1 Eight three, potentiometer capacitors of resistance one and a power supply V+ composition, shock sensor one end ground connection other end and crystal Pipe base stage is connected with resistance R1, R2, another termination power of R1, and R2 other end ground connection, transistor collector is connected with R3, W1 It connects, the R3 other end is connected with power supply V+, and W1 center head is connected with 3 ends of operational amplifier N1, the 2 ends ground connection of N1, N1's Output is connected with C3, R6, and the C3 other end is connect with diode D1 anode, and diode D1 cathode is connect with resistance R7, R8, and R8 is another One end ground connection R7 other end is that shaping circuit output is connected with the input terminal In of acquisition unit N2.

The vibration signal acquisition unit is by HSSI High-Speed Serial Interface 16BitAD converter N2, ARD435 precision fiducial chip N3 and high-performance STC series monolithic N4 and+12V power supply, power supply V+ are constituted, and single-chip microcontroller is by three control lines A1, A2, A3 Controllable N2 is worked normally and by collected a large amount of instantaneous shock data storages into EEPROM inside single-chip microcontroller, recycles phase The data processing subprogram answered is analyzed and processed vibration signal.

The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this Within the spirit and principle of utility model, any modification, equivalent replacement, improvement and so on should be included in the utility model Protection scope within.

Claims

1. a kind of shock detection digital processing circuit, it is characterised in that: single including shock sensor HD1 and vibration signal conditioning Member and vibration signal acquisition unit, the vibration signal conditioning unit amplifies shock sensor signal by V1, N1, D1, Filtering, shaping, described shock sensor one end are grounded another termination transistor V1 base stage and resistance R1, R2, another termination electricity of R1 Source V+, the R2 other end ground connection, transistor V1 collector meet R3, W1, and W1 center head connects 3 ends of operational amplifier N1,2 terminations of N1 The output of ground N1 meets C3, R6, and the C3 other end is connect with diode D1 anode, and diode D1 cathode is connect with resistance R7, R8, and R8 is another One end ground connection R7 other end is that shaping circuit output is connected with the input terminal In of acquisition unit N2；Accurate fiducial chip N3 is ARD435, single-chip microcontroller N4 are STC series monolithic, internal to have eeprom memory, and AD conversion N2 is serial line interface 16Bit Converter.

2. a kind of shock detection digital processing circuit according to claim 1, it is characterised in that: the vibration signal acquisition Unit has data analysis and data processing, given threshold and upper and lower alarm limit, digital filtering ability.