CN204439206U - Low-consumption wireless vibration monitoring device - Google Patents
Low-consumption wireless vibration monitoring device Download PDFInfo
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- CN204439206U CN204439206U CN201520106602.5U CN201520106602U CN204439206U CN 204439206 U CN204439206 U CN 204439206U CN 201520106602 U CN201520106602 U CN 201520106602U CN 204439206 U CN204439206 U CN 204439206U
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Abstract
The utility model discloses a kind of low-consumption wireless vibration monitoring device, comprise for extracting vibration signal and processing the vibration signal extraction element being converted to digital signal; Be coupled to the control circuit that the digital signal that vibration signal extraction element exports carries out processing by vibration signal extraction element; Convert the both-end radiofrequency signal of Ba Lun converter to single-ended signal and be coupled in the Ba Lun converter in antenna E1, can by wireless transmission and sensor integration in a device, both avoided the signal disturbing brought in simulating signal transmittance process, saved again cable, be convenient to install.Although still need to arrange multipair wireless vibration monitoring apparatus in multiple directions, be wireless connections each other, therefore the layout of whole system is spick-and-span, is conducive to field maintemance.Because wireless module has unique address code, so easily accurately locate signal source.
Description
Technical field
The utility model relates to a kind of equipment condition monitoring device, specifically, relates to a kind of low-consumption wireless vibration monitoring device, belongs to electronic technology field.
Background technology
In industrial system, vibration analysis is the important evidence that plant equipment carries out state-detection, fault diagnosis, life prediction, conventional portable numeral vialog adopts electrical measuring method, flash spotting and mechanical method of vibration measurement, and in electric measuring method, shearing piezoelectric sensing principle is again apply the most general a kind of mode.
Under most of occasion, the detection of main equipment, the vibration-testing that such as rolling bearing detects, at least
Need respectively arranging pair of sensors in three directions.
Realizing in process of the present invention, inventor finds that prior art at least has the following disadvantages: because wired vibration measuring needs the check point of setting a lot, and the quantity of sensor is also very large, and cause cable laying more complicated, use management is more complicated also.In addition, because conventional vibration sensor does not have address mark, the signal of sensor passes to more difficult accurate location after on main frame.And the power consumption of conventional vibration sensor is comparatively large, is unfavorable for as monitoring means, can only periodic detection.What wired vibration measuring was transmitted is simulating signal, and antijamming capability is poor.
Utility model content
Technical problem to be solved in the utility model is to provide a kind of low-consumption wireless vibration monitoring device, overcome sensor wire in prior art and lay problem that is complicated, poor anti jamming capability, after adopting low-consumption wireless vibration monitoring device of the present utility model, there is the advantage that wiring is simple, antijamming capability is strong.
For solving the problems of the technologies described above, the technical solution of the utility model is: low-consumption wireless vibration monitoring device, is characterized in that, comprising:
Vibration signal extraction element, is converted to digital signal for extracting vibration signal and processing;
Control circuit, is coupled to vibration signal extraction element, processes for the digital signal exported by vibration signal extraction element;
Ba Lun converter, is coupled to the output terminal of control circuit, converts the both-end radiofrequency signal of Ba Lun converter to single-ended signal, and is coupled in antenna E1.
A kind of prioritization scheme, described control circuit is radio receiving transmitting module U1, and model is CC2540.
Further, described Ba Lun converter comprises electric capacity C31, electric capacity C33, electric capacity C32, electric capacity C34, electric capacity C35 and inductance L 1, inductance L 2, inductance L 3, inductance L 4;
Electric capacity C31 is coupled between one end of one end of the radio-frequency (RF) output end of radio receiving transmitting module U1 and electric capacity C32, inductance L 1,
Another termination signal ground of inductance L 1, one end of another termination inductance L 2 of electric capacity C32, one end of inductance L 3, one end of another termination capacitor C35 of inductance L 3, one end of inductance L 4, another termination signal ground of electric capacity C35, the other end of inductance L 4 is coupled to antenna E1;
One end of another termination capacitor C33 of inductance L 2, one end of electric capacity C34, another termination signal ground of electric capacity C34, another radio-frequency (RF) output end of another termination radio receiving transmitting module U1 of electric capacity C33.
Further, described vibration signal extraction element comprises:
Charge amplifier, is coupled to piezoelectric vibration pickup, for the voltage signal becoming to be directly proportional with it by the charge conversion that piezoelectric vibration pickup is responded to;
In-phase amplification circuit, is coupled to charge amplifier, amplifies for the signal exported by charge amplifier;
Bivalent high-pass filter, is coupled to in-phase amplification circuit, carries out filtering for the signal exported by in-phase amplification circuit;
Second-order low-pass filter, is coupled to bivalent high-pass filter, carries out filtering for the signal exported by bivalent high-pass filter;
A/D converter, is coupled to second-order low-pass filter, is converted to digital signal for the signal exported by second-order low-pass filter.
Further, described charge amplifier comprises resistance R101, resistance R102, electric capacity C104 and operational amplifier U2A:
The inverting input of operational amplifier U2A is coupled to one end of resistance R101, one end of resistance R102, the output terminal of another termination operational amplifier U2A of resistance R102;
Electric capacity C104 is in parallel with resistance R102.
Further, described in-phase amplification circuit comprises resistance R104, resistance R105, resistance R106 and operational amplifier U2B:
The output terminal of the one termination operational amplifier U2A of resistance R104, the in-phase input end of another termination operational amplifier U2B of resistance R104, the inverting input of operational amplifier U2B is coupled to one end of resistance R105, one end of resistance R106, another termination signal ground of resistance R106, the output terminal of another termination operational amplifier U2B of resistance R105.
Further, described bivalent high-pass filter comprises electric capacity C20, electric capacity C21, resistance R20, resistance R21 and operational amplifier U3A;
The output terminal of the one termination in-phase amplification circuit of electric capacity C20, one end of another termination capacitor C21 of electric capacity C20, one end of resistance R20, the inverting input of another termination operational amplifier U3A of resistance R20 and output terminal, one end of other end connecting resistance R21 of electric capacity C21, the in-phase input end of operational amplifier U3A, another termination signal ground of resistance R21.
Further, described second-order low-pass filter comprises resistance R22, resistance R23, electric capacity C22, electric capacity C23 and operational amplifier U3B;
The output terminal of the one termination bivalent high-pass filter of resistance R22, one end of other end connecting resistance R23 of resistance R22, one end of electric capacity C22, the inverting input of another termination operational amplifier U3B of electric capacity C22 and output terminal, one end of another termination capacitor C23 of resistance R23, the in-phase input end of operational amplifier U3B, another termination signal ground of electric capacity C23.
Further, the P1_2 interface of the sheet choosing input termination radio receiving transmitting module U1 of described A/D converter, the output terminal of the passage 0 analog input termination second-order low-pass filter of A/D converter, the serial clock of A/D converter connects the P1_5 interface of radio receiving transmitting module U1, the serial date transfer interface of A/D converter connects the P1_3 interface of radio receiving transmitting module U1, and the serial data output interface of A/D converter connects the P1_4 interface of radio receiving transmitting module U1.
Further, the model of described A/D converter is MCP3002.
The utility model adopts technique scheme, compared with prior art, has the following advantages: by wireless transmission and sensor integration in a device, both can avoid the signal disturbing brought in simulating signal transmittance process, and saved again cable, be convenient to installation.Although still need to arrange multipair wireless vibration monitoring apparatus in multiple directions, be wireless connections each other, therefore the layout of whole system is spick-and-span, is conducive to field maintemance.Because wireless module has unique address code, so easily accurately locate signal source.
Below in conjunction with drawings and Examples, the utility model is described in further detail.
Accompanying drawing explanation
Fig. 1 is the circuit block diagram of unlimited vibration monitoring device in the utility model embodiment;
Fig. 2 is the circuit diagram of charge amplifier, in-phase amplification circuit in the utility model embodiment;
Fig. 3 is the circuit diagram of bivalent high-pass filter, second-order low-pass filter in the utility model embodiment;
Fig. 4 is the circuit diagram of A/D converter in the utility model embodiment, control circuit, Ba Lun converter;
In figure,
1-charge amplifier, 2-in-phase amplification circuit, 3-bivalent high-pass filter, 4-second-order low-pass filter, 5-A/D converter, 6-control circuit, 7-Ba Lun converter.
Embodiment
In order to there be understanding clearly to technical characteristic of the present utility model, object and effect, now contrast accompanying drawing and embodiment of the present utility model is described.
As shown in Figure 1, low-consumption wireless vibration monitoring device, is characterized in that, comprising:
Vibration signal extraction element, is converted to digital signal for extracting vibration signal and processing;
Control circuit 6, is coupled to vibration signal extraction element, processes for the digital signal exported by vibration signal extraction element;
Ba Lun converter 7, is coupled to the output terminal of control circuit 6, converts the both-end radiofrequency signal of Ba Lun converter 7 to single-ended signal, and is coupled in antenna E1.
Vibration signal extraction element comprises:
Charge amplifier 1, is coupled to piezoelectric vibration pickup, for the voltage signal becoming to be directly proportional with it by the charge conversion that piezoelectric vibration pickup is responded to;
In-phase amplification circuit 2, is coupled to charge amplifier 1, amplifies for the signal exported by charge amplifier 1;
Bivalent high-pass filter 3, is coupled to in-phase amplification circuit 2, carries out filtering for the signal exported by in-phase amplification circuit 2;
Second-order low-pass filter 4, is coupled to bivalent high-pass filter 3, carries out filtering for the signal exported by bivalent high-pass filter 3;
A/D converter 5, is coupled to second-order low-pass filter 4, is converted to digital signal for the signal exported by second-order low-pass filter 4.
Control circuit 6 is radio receiving transmitting module U1, and model is CC2540.
Further, described Ba Lun converter 7 comprises electric capacity C31, electric capacity C33, electric capacity C32, electric capacity C34, electric capacity C35 and inductance L 1, inductance L 2, inductance L 3, inductance L 4; Electric capacity C31 is coupled between one end of one end of the radio-frequency (RF) output end of radio receiving transmitting module U1 and electric capacity C32, inductance L 1, another termination signal ground of inductance L 1, one end of another termination inductance L 2 of electric capacity C32, one end of inductance L 3, one end of another termination capacitor C35 of inductance L 3, one end of inductance L 4, another termination signal ground of electric capacity C35, the other end of inductance L 4 is coupled to antenna E1; Antenna E1 adopts 50ohm PCB antenna; One end of another termination capacitor C33 of inductance L 2, one end of electric capacity C34, another termination signal ground of electric capacity C34, another radio-frequency (RF) output end of another termination radio receiving transmitting module U1 of electric capacity C33.
Charge amplifier 1 comprises resistance R101, resistance R102, electric capacity C104 and operational amplifier U2A: the inverting input of operational amplifier U2A is coupled to one end of one end of resistance R101, resistance R102, the output terminal of another termination operational amplifier U2A of resistance R102; Electric capacity C104 is in parallel with resistance R102.
In-phase amplification circuit 2 comprises resistance R104, resistance R105, resistance R106 and operational amplifier U2B; The output terminal of the one termination operational amplifier U2A of resistance R104, the in-phase input end of another termination operational amplifier U2B of resistance R104, the inverting input of operational amplifier U2B is coupled to one end of resistance R105, one end of resistance R106, another termination signal ground of resistance R106, the output terminal (S1) of another termination operational amplifier U2B of resistance R105.
Why a part of operational amplifier U2A and operational amplifier U2B to be model be respectively the operational amplifier U2 of TLC27M7CD, adopt TLC27M7CD to carry out building charge amplifier 1, be because its input impedance is very high, can reach 10
12Ω.
Bivalent high-pass filter 3 comprises electric capacity C20, electric capacity C21, resistance R20, resistance R21 and operational amplifier U3A; The output terminal (S1) of the one termination in-phase amplification circuit 2 of electric capacity C20, one end of another termination capacitor C21 of electric capacity C20, one end of resistance R20, the inverting input of another termination operational amplifier U3A of resistance R20 and output terminal, one end of other end connecting resistance R21 of electric capacity C21, the in-phase input end of operational amplifier U3A, another termination signal ground of resistance R21.
Second-order low-pass filter 4 comprises resistance R22, resistance R23, electric capacity C22, electric capacity C23 and operational amplifier U3B; The output terminal of the one termination bivalent high-pass filter 3 of resistance R22, one end of other end connecting resistance R23 of resistance R22, one end of electric capacity C22, the inverting input of another termination operational amplifier U3B of electric capacity C22 and output terminal (S3), one end of another termination capacitor C23 of resistance R23, the in-phase input end of operational amplifier U3B, another termination signal ground of electric capacity C23.
A part of operational amplifier U3A, operational amplifier U3B to be model be respectively the dual operational amplifier U3 of MCP607.
The P1_2 interface of the sheet choosing input termination radio receiving transmitting module U1 of A/D converter 5, passage 0 analog input end (2 pin) of A/D converter 5 connects the output terminal (S3) of second-order low-pass filter 4, the serial clock of A/D converter 5 connects the P1_5 interface of radio receiving transmitting module U1, the serial date transfer interface of A/D converter 5 connects the P1_3 interface of radio receiving transmitting module U1, and the serial data output interface of A/D converter 5 connects the P1_4 interface of radio receiving transmitting module U1.
The A/D converter U4 of A/D converter 5 to be models be MCP3002.
Terminal Signal is vibration signal, comes from shearing piezoelectric vibration sensors, the vibration signal after filtering, and send into serial data converter and carry out A/D conversion, the interface between A/D converter 5 and microcontroller U1 is synchronous serial interface (SPI).
Microcontroller U1 is integrated with the wireless transceiver of 2.4GHz, electric capacity C31, electric capacity C33, electric capacity C32, electric capacity C34, electric capacity C35 and inductance L 1, inductance L 2, inductance L 3, inductance L 4 form Ba Lun converter 7, convert the both-end radiofrequency signal of microcontroller U1 to single-ended signal, in feed antenna E1.Adopt integrated wireless transceiver MCU, by wireless receiving and dispatching and data acquisition function, be achieved by a very succinct circuit.In addition adopted integrated circuit (IC) chip is low-power consumption, and the quiescent current of segment chip is μ A level, and CC25XX family chip has very excellent power managed performance, and dimension makes the power consumption of whole system very low.
Owing to have employed the wireless receiving and dispatching SOC (system on a chip) (SoC) of the CC25XX series of TI company, this chip has very high integrated level, simplifies circuit design, achieves miniaturization and low-power consumption.It is 20mm that the physical dimension of this device can make diameter, be highly a dingus of 25mm, and its standby current about can reach 10uA.
The above is the citing of the utility model preferred forms, and the part wherein do not addressed in detail is the common practise of those of ordinary skill in the art.Protection domain of the present utility model is as the criterion with the content of claim, and any equivalent transformation carried out based on technology enlightenment of the present utility model, also within protection domain of the present utility model.
Claims (10)
1. low-consumption wireless vibration monitoring device, is characterized in that, comprising:
Vibration signal extraction element, is converted to digital signal for extracting vibration signal and processing;
Control circuit (6), is coupled to vibration signal extraction element, processes for the digital signal exported by vibration signal extraction element;
Ba Lun converter (7), is coupled to the output terminal of control circuit (6), converts the both-end radiofrequency signal of Ba Lun converter (7) to single-ended signal, and is coupled in antenna E1.
2. low-consumption wireless vibration monitoring device as claimed in claim 1, it is characterized in that, described control circuit (6) is radio receiving transmitting module U1, and model is CC2540.
3. low-consumption wireless vibration monitoring device as claimed in claim 1, it is characterized in that, described Ba Lun converter (7) comprises electric capacity C31, electric capacity C33, electric capacity C32, electric capacity C34, electric capacity C35 and inductance L 1, inductance L 2, inductance L 3, inductance L 4;
Electric capacity C31 is coupled between one end of one end of the radio-frequency (RF) output end of radio receiving transmitting module U1 and electric capacity C32, inductance L 1,
Another termination signal ground of inductance L 1, one end of another termination inductance L 2 of electric capacity C32, one end of inductance L 3, one end of another termination capacitor C35 of inductance L 3, one end of inductance L 4, another termination signal ground of electric capacity C35, the other end of inductance L 4 is coupled to antenna E1;
One end of another termination capacitor C33 of inductance L 2, one end of electric capacity C34, another termination signal ground of electric capacity C34, another radio-frequency (RF) output end of another termination radio receiving transmitting module U1 of electric capacity C33.
4. low-consumption wireless vibration monitoring device as claimed in claim 2 or claim 3, it is characterized in that, described vibration signal extraction element comprises:
Charge amplifier (1), is coupled to piezoelectric vibration pickup, for the voltage signal becoming to be directly proportional with it by the charge conversion that piezoelectric vibration pickup is responded to;
In-phase amplification circuit (2), is coupled to charge amplifier (1), amplifies for the signal exported by charge amplifier (1);
Bivalent high-pass filter (3), is coupled to in-phase amplification circuit (2), carries out filtering for the signal exported by in-phase amplification circuit (2);
Second-order low-pass filter (4), is coupled to bivalent high-pass filter (3), carries out filtering for the signal exported by bivalent high-pass filter (3);
A/D converter (5), is coupled to second-order low-pass filter (4), is converted to digital signal for the signal exported by second-order low-pass filter (4).
5. low-consumption wireless vibration monitoring device as claimed in claim 4, it is characterized in that, described charge amplifier (1) comprises resistance R101, resistance R102, electric capacity C104 and operational amplifier U2A:
The inverting input of operational amplifier U2A is coupled to one end of resistance R101, one end of resistance R102, the output terminal of another termination operational amplifier U2A of resistance R102;
Electric capacity C104 is in parallel with resistance R102.
6. low-consumption wireless vibration monitoring device as claimed in claim 5, it is characterized in that, described in-phase amplification circuit (2) comprises resistance R104, resistance R105, resistance R106 and operational amplifier U2B:
The output terminal of the one termination operational amplifier U2A of resistance R104, the in-phase input end of another termination operational amplifier U2B of resistance R104, the inverting input of operational amplifier U2B is coupled to one end of resistance R105, one end of resistance R106, another termination signal ground of resistance R106, the output terminal of another termination operational amplifier U2B of resistance R105.
7. low-consumption wireless vibration monitoring device as claimed in claim 6, it is characterized in that, described bivalent high-pass filter (3) comprises electric capacity C20, electric capacity C21, resistance R20, resistance R21 and operational amplifier U3A;
The output terminal of the one termination in-phase amplification circuit (2) of electric capacity C20, one end of another termination capacitor C21 of electric capacity C20, one end of resistance R20, the inverting input of another termination operational amplifier U3A of resistance R20 and output terminal, one end of other end connecting resistance R21 of electric capacity C21, the in-phase input end of operational amplifier U3A, another termination signal ground of resistance R21.
8. low-consumption wireless vibration monitoring device as claimed in claim 7, it is characterized in that, described second-order low-pass filter (4) comprises resistance R22, resistance R23, electric capacity C22, electric capacity C23 and operational amplifier U3B;
The output terminal of the one termination bivalent high-pass filter (3) of resistance R22, one end of other end connecting resistance R23 of resistance R22, one end of electric capacity C22, the inverting input of another termination operational amplifier U3B of electric capacity C22 and output terminal, one end of another termination capacitor C23 of resistance R23, the in-phase input end of operational amplifier U3B, another termination signal ground of electric capacity C23.
9. low-consumption wireless vibration monitoring device as claimed in claim 8, it is characterized in that, the P1_2 interface of the sheet choosing input termination radio receiving transmitting module U1 of described A/D converter (5), the output terminal of passage 0 analog input termination second-order low-pass filter (4) of A/D converter (5), the serial clock of A/D converter (5) connects the P1_5 interface of radio receiving transmitting module U1, the serial date transfer interface of A/D converter (5) connects the P1_3 interface of radio receiving transmitting module U1, and the serial data output interface of A/D converter (5) connects the P1_4 interface of radio receiving transmitting module U1.
10. low-consumption wireless vibration monitoring device as claimed in claim 8, it is characterized in that, the model of described A/D converter (5) is MCP3002.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520106602.5U CN204439206U (en) | 2015-02-13 | 2015-02-13 | Low-consumption wireless vibration monitoring device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520106602.5U CN204439206U (en) | 2015-02-13 | 2015-02-13 | Low-consumption wireless vibration monitoring device |
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| CN204439206U true CN204439206U (en) | 2015-07-01 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107192445A (en) * | 2017-07-31 | 2017-09-22 | 江苏省电力试验研究院有限公司 | A kind of strong vibration sensor circuit and signal acquiring system for primary cut-out |
| CN107865661A (en) * | 2016-09-28 | 2018-04-03 | 深圳市理邦精密仪器股份有限公司 | Respiration measurement device and method |
-
2015
- 2015-02-13 CN CN201520106602.5U patent/CN204439206U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107865661A (en) * | 2016-09-28 | 2018-04-03 | 深圳市理邦精密仪器股份有限公司 | Respiration measurement device and method |
| CN107192445A (en) * | 2017-07-31 | 2017-09-22 | 江苏省电力试验研究院有限公司 | A kind of strong vibration sensor circuit and signal acquiring system for primary cut-out |
| CN107192445B (en) * | 2017-07-31 | 2023-11-07 | 江苏省电力试验研究院有限公司 | Strong vibration sensor circuit for high-voltage circuit breaker and signal acquisition system |
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