CN206876294U - A kind of relay exports vibration velocity transmitter - Google Patents
A kind of relay exports vibration velocity transmitter Download PDFInfo
- Publication number
- CN206876294U CN206876294U CN201720760851.5U CN201720760851U CN206876294U CN 206876294 U CN206876294 U CN 206876294U CN 201720760851 U CN201720760851 U CN 201720760851U CN 206876294 U CN206876294 U CN 206876294U
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- signal
- circuit
- relay
- vibration velocity
- output
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Abstract
The utility model provides a kind of relay output vibration velocity transmitter.The principle of electric charge is produced using piezoelectric stress, using microprocessor and integrated digital circuit technology, measures the vibration velocity size of rotating machinery, and export the contact point signal of relay all the way.The function of range and relay tip output can not be changed by adding conventional vibration velocity transmitter, to that can only be exported with the corresponding current signal of vibration values than conventional vibration transmitters, complete analog signal processing, and the relay output vibration velocity transmitter of the application uses new signal processing mode, convert analog signals into data signal and handled.And the set-up function of remotely modifying range, zero point correction and alarming value by HART communication circuit realiration, directly reaches the alarming value of setting according to vibration velocity size and makes the actuating of relay.
Description
Technical field
It the utility model is related to technology of instrument and meter field, more particularly to a kind of relay output vibration velocity transmitter.
Background technology
Current vibration velocity transmitter can only monitor the size of machine actual vibration value according to factory setting value, it is impossible to root
Range is changed according to machine run time, if machine long-play, machine ages, what vibration values change can only more renew greatly shakes
Dynamic velocity transducer.
Utility model content
The utility model provides a kind of relay output vibration velocity transmitter, to solve above-mentioned technical problem.
A kind of relay output vibration velocity transmitter of the utility model, including：
Piezoelectric transducer, signal acquisition circuit, the first signal processing unit, secondary signal processing unit, CPU processing electricity
Road, current/charge-voltage convertor, HART communication circuit, superimposed signal circuit and outputting circuit for relay；
Described signal acquisition circuit one end connects the piezoelectric transducer, and the other end connects the first signal transacting list
Member, gather the micro voltage signal proportional to vibration acceleration of the piezoelectric transducer；
First signal processing unit is transmitted to the secondary signal after the micro voltage signal filter and amplification is integrated
Processing unit；
Voltage signal after integration is carried out RMS-DC converter, LPF and impedance by the secondary signal processing unit
Transmitted after conversion to the CPU process circuits；
After voltage signal after the impedance transformation is carried out analog/digital conversion and D/A switch by the CPU process circuits,
Control the current/charge-voltage convertor, HART communication circuit, outputting circuit for relay；
The superimposed signal circuit is that the voltage signal after the CPU process circuits D/A switch and HART circuits is defeated
The AC signal gone out is overlapped, and is exported to current/charge-voltage convertor；
The current/charge-voltage convertor is that the voltage signal of output is converted into current signal, and the electric current is believed
Number it is added on power supply and exports；
Electric current output is converted to AC signal by the HART communication circuit by fsk signal, is transmitted to HART hands
Grasp device；
The outputting circuit for relay is connected with the cpu circuit.
Further, first signal processing unit includes：
One-level amplifying circuit, second-order low-pass filter circuit, one-level ac-coupled circuit, second amplifying circuit, integration electricity
Road, two level ac-coupled circuit and three-stage amplifier；
The micro voltage signal that the signal acquisition circuit exports is amplified by the one-level amplifying circuit；
The second-order low-pass filter circuit is to filter out the high fdrequency component in the micro voltage signal after amplifying；
The one-level AC coupled is to transmit the AC signal of the second-order low-pass filter circuit output, and filters out the friendship
Flow the low-frequency interference signal in signal；
Signal after filtering out low-frequency interference signal is amplified by the second amplifying circuit；
The integrating circuit is that the acceleration signal that the second amplifying circuit exports is converted into speed by Integral Processing
Spend signal；
The two level ac-coupled circuit handles the rate signal, and filters out the low frequency component in the rate signal；
The rate signal after low frequency component is filtered out described in the three-stage amplifier amplification.
Further, the secondary signal processing unit, including：
RMS-DC converter circuit, filter circuit and impedance inverter circuit；
Rate signal after processing is carried out peak value RMS-DC converter by the RMS-DC converter circuit, and will be straight after conversion
Flow component is exported to the low-pass filter circuit, and the low-pass filter circuit filters out the high fdrequency component of the DC component signal；
The impedance inverter circuit reduces the output impedance of the DC component signal after filtering out high fdrequency component.
Further, in addition to：
Output loop protection circuit is connected with the voltage-current converter circuit, and power supply is become into nonpolarity connection, prevented
Electric voltage reverse-connection causes circuit burnout.
Further, in addition to：
Alarm unit, the alarm unit are connected with the relay output end.
Further, the piezoelectric transducer is piezoelectric ceramics.
The utility model realizes the basic function of vibration velocity transmitter：The vibration values of normal measurement rotating machinery are big
It is small；Add HART functions and realized remotely modifying parameter, including modification range, set the actuating of relay alarming value it is big
Small, zero point correction, contact output all the way is added, the warning circuit in control system can be directly driven, realize warning function.
Improve operating efficiency.
Brief description of the drawings
, below will be to embodiment in order to illustrate more clearly of the utility model embodiment or technical scheme of the prior art
Or the required accompanying drawing used is briefly described in description of the prior art, it should be apparent that, drawings in the following description are
Some embodiments of the utility model, for those of ordinary skill in the art, do not paying the premise of creative labor
Under, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is that a kind of relay of the utility model exports vibration velocity structure of transmitter schematic diagram；
Fig. 2 is that a kind of relay of the utility model exports vibration velocity transducer signal Acquisition Circuit；
Fig. 3 is that a kind of relay of the utility model exports vibration velocity the first signal processing unit of transmitter；
Fig. 4 is that a kind of relay of the utility model exports vibration velocity transmitter secondary signal processing unit；
Fig. 5 is that a kind of relay of the utility model exports vibration velocity transmitter CPU processing units；
Fig. 6 is that a kind of relay of the utility model exports vibration velocity transmitter voltage-current converter circuit；
Fig. 7 is that a kind of relay of the utility model exports vibration velocity transmitter HART communication circuit；
Fig. 8 is that a kind of relay of the utility model exports vibration velocity transducer signal supercircuit；
Fig. 9 is that a kind of relay of the utility model exports vibration velocity transmitter output Loop Protection；
Figure 10 is that a kind of relay of the utility model exports vibration velocity transmitter outputting circuit for relay；
Figure 11 is that a kind of relay of the utility model exports another structural representation of vibration velocity transmitter.
Embodiment
It is new below in conjunction with this practicality to make the purpose, technical scheme and advantage of the utility model embodiment clearer
Accompanying drawing in type embodiment, the technical scheme in the embodiment of the utility model is clearly and completely described, it is clear that is retouched
The embodiment stated is the utility model part of the embodiment, rather than whole embodiments.Based on the implementation in the utility model
Example, the every other embodiment that those of ordinary skill in the art are obtained under the premise of creative work is not made, is belonged to
The scope of the utility model protection.
Fig. 1 is that a kind of relay of the utility model exports vibration velocity structure of transmitter schematic diagram, as shown in figure 1, this reality
Applying a vibration speed change device includes；
Piezoelectric transducer 101, signal acquisition circuit 102, the first signal processing unit 103, secondary signal processing unit
104th, CPU process circuits 105, current/charge-voltage convertor 106, HART communication circuit 107, superimposed signal circuit 108 and after
Electrical equipment output circuit 109；
Described signal acquisition circuit one end connects the piezoelectric transducer, and the other end connects the first signal transacting list
Member, gather the micro voltage signal proportional to vibration acceleration of the piezoelectric transducer；As shown in Fig. 2 signal acquisition circuit
In the weak voltage signals that are exported according to the size of vibration of piezoelectric ceramics transmit to the first signal processing unit.
First signal processing unit is transmitted to the secondary signal after the micro voltage signal filter and amplification is integrated
Processing unit；
Voltage signal after integration is carried out RMS-DC converter, LPF and impedance by the secondary signal processing unit
Transmitted after conversion to the CPU process circuits；
After voltage signal after the impedance transformation is carried out analog/digital conversion and D/A switch by the CPU process circuits,
Control the current/charge-voltage convertor, HART communication circuit, outputting circuit for relay；
The superimposed signal circuit is that the voltage signal after the CPU process circuits D/A switch and HART circuits is defeated
The AC signal gone out is overlapped, and is exported to current/charge-voltage convertor.As shown in figure 8, supercircuit believes obtained voltage
Number with HART output 1200Hz and 2200Hz AC signal carry out FSK modulation, be then output in Voltage-current conversion circuit.
The current/charge-voltage convertor is that the voltage signal of output is converted into current signal, and the electric current is believed
Number it is added on power supply and is used for 4-20mA and exports.
Electric current output is converted to 1200Hz by fsk signal and letter is exchanged with 2200Hz by the HART communication circuit
Number, transmit to HART manual operators.As shown in fig. 7, controlling HART communication circuit by the UART interface of CPU processing units, realize
Remotely modifying parameter, including modification range, the size of alarming value that the actuating of relay is set, zero point correction.
The outputting circuit for relay is connected with the cpu circuit.As shown in Figure 10, acted, and set by CPU control contacts
Putting makes the threshold value of the actuating of relay, realizes the opening and closing of relay with control system parameter.
Further, first signal processing unit includes：
One-level amplifying circuit, second-order low-pass filter circuit, one-level ac-coupled circuit, second amplifying circuit, integration electricity
Road, two level ac-coupled circuit and three-stage amplifier；
The micro voltage signal that the signal acquisition circuit exports is amplified by the one-level amplifying circuit；
The second-order low-pass filter circuit is to filter out the high fdrequency component in the micro voltage signal after amplifying；
The one-level AC coupled is to transmit the AC signal of the second-order low-pass filter circuit output, and filters out the friendship
Flow the low-frequency interference signal in signal；
Signal after filtering out low-frequency interference signal is amplified by the second amplifying circuit；
The integrating circuit is that the acceleration signal that the second amplifying circuit exports is converted into speed by Integral Processing
Spend signal；
The two level ac-coupled circuit handles the rate signal, and filters out the low frequency component in the rate signal；
The rate signal after low frequency component is filtered out described in the three-stage amplifier amplification.
Specifically, first signal element of the present embodiment is as shown in figure 3, be that amplified signal is adopted the purpose of one-level amplifying circuit
The micro voltage signal of collector output, and have the function that to reduce output impedance.The low low-pass filter circuit of second order adopts signal
The signal of collector output carries out LPF, filters out more than 2KHz high fdrequency components.One-level AC coupled, filters out below 10Hz's
Acceleration signal is become rate signal, two level by signal, the acceleration signal after the completion of second amplifying circuit filtering, integrating circuit
AC coupled filters out below the 10Hz of rate signal low frequency component, and rate signal is amplified by three-stage amplifier.
Further, the secondary signal processing unit, including：
RMS-DC converter circuit, filter circuit and impedance inverter circuit；
Rate signal after processing is carried out peak value RMS-DC converter by the RMS-DC converter circuit, and will be straight after conversion
Flow component is exported to the low-pass filter circuit, and the low-pass filter circuit filters out the high fdrequency component of the DC component signal；
The impedance inverter circuit reduces the output impedance of the DC component signal after filtering out high fdrequency component.
Specifically, as shown in figure 4, the rate signal after amplification is carried out peak value by secondary signal processing unit turns effective
Value, becomes DC component, LPF is the high fdrequency component for filtering out more than 10Hz, and impedance inverter circuit is to filter by AC compounent
High resistant DC quantity after ripple is converted into low-resistance DC quantity and exported to give CPU processing units.CPU processing units circuit will be as shown in figure 5, will
The low-resistance DC quantity of output carries out analog/digital conversion, becomes digital quantity and signal transacting, including range modification, zero point are carried out in CPU
Calibration, alarming value setting etc..The Specific amounts of those values is set according to actual conditions.Finally again by D/A switch by data signal
Become analog voltage signal to export to superimposed signal circuit.
Further, as shown in figure 11, in addition to：
Output loop protection circuit is connected with the voltage-current converter circuit, and power supply is become into nonpolarity connection, prevented
Electric voltage reverse-connection causes circuit burnout.As shown in fig. 6, current/charge-voltage convertor is to believe the voltage of superimposed signal circuit output
Number it is converted into current signal and exports to give Loop Protection circuit.
As shown in figure 9, output loop protection circuit increase counnter attack diode, rectifier circuit, prevents voltage reflux and electricity
Source is reversed, output is become nonpolarity loop output.
Further, in addition to：
Alarm unit, the alarm unit are connected with the relay output end.In the present embodiment, CPU processing units electricity
The increased output of contact all the way connection alarm unit, can directly drive the warning circuit in control system, realize alarm in road
Function.Type of alarm is the opening and closing of relay, if relay is normally opened relay, the relay when reaching alarming value
Action, be changed into closing, now have in control system receive closure signal circuit with reach change control system parameter work(
Energy.
Further, the piezoelectric transducer is piezoelectric ceramics.
The utility model vibration velocity transmitter produces the principle of electric charge using piezoelectric stress, using microprocessor and
Integrated digital circuit technology, the vibration velocity size of rotating machinery is measured, and export the contact point signal of relay all the way.
The function of range and relay tip output can not be changed by adding conventional vibration velocity transmitter, to than ever
Vibration transmitters can only export with the corresponding current signal of vibration values, complete analog signal processing, and new relay
Output vibration velocity transmitter uses new signal processing mode, converts analog signals into data signal and is handled, there is provided
The set-up function of remotely modifying range, zero point correction and alarming value, contact output all the way is added, directly according to vibration velocity
Size reaches the alarming value of setting and makes the actuating of relay.
Finally it should be noted that：Various embodiments above is only to illustrate the technical solution of the utility model, rather than it is limited
System；Although the utility model is described in detail with reference to foregoing embodiments, one of ordinary skill in the art should
Understand：It can still modify to the technical scheme described in foregoing embodiments, either to which part or whole
Technical characteristic carries out equivalent substitution；And these modifications or replacement, the essence of appropriate technical solution is departed from this practicality newly
The scope of each embodiment technical scheme of type.
Claims (6)
1. a kind of relay exports vibration velocity transmitter, it is characterised in that including：
Piezoelectric transducer, signal acquisition circuit, the first signal processing unit, secondary signal processing unit, CPU process circuits, electricity
Piezo-electric stream change-over circuit, HART communication circuit, superimposed signal circuit and outputting circuit for relay；
Described signal acquisition circuit one end connects the piezoelectric transducer, and the other end connects first signal processing unit, adopted
Collect the micro voltage signal proportional to vibration acceleration of the piezoelectric transducer；
First signal processing unit is transmitted after the micro voltage signal filter and amplification is integrated to secondary signal processing
Unit；
Voltage signal after integration is carried out RMS-DC converter, LPF and impedance transformation by the secondary signal processing unit
After transmit to the CPU process circuits；
After voltage signal after the impedance transformation is carried out analog/digital conversion and D/A switch by the CPU process circuits, control
The current/charge-voltage convertor, HART communication circuit, outputting circuit for relay；
The superimposed signal circuit is by the voltage signal after the CPU process circuits D/A switch and HART circuit outputs
AC signal is overlapped, and is exported to current/charge-voltage convertor；
The current/charge-voltage convertor is that the voltage signal of output is converted into current signal, and the current signal is folded
It is added on power supply and exports；
Electric current output is converted to AC signal by the HART communication circuit by fsk signal, is transmitted to HART manual operators；
The outputting circuit for relay is connected with the cpu circuit.
2. relay according to claim 1 exports vibration velocity transmitter, it is characterised in that first signal transacting
Unit includes：
One-level amplifying circuit, second-order low-pass filter circuit, one-level ac-coupled circuit, second amplifying circuit, integrating circuit, two
Level ac-coupled circuit and three-stage amplifier；
The micro voltage signal that the signal acquisition circuit exports is amplified by the one-level amplifying circuit；
The second-order low-pass filter circuit is to filter out the high fdrequency component in the micro voltage signal after amplifying；
The one-level AC coupled is to transmit the AC signal of the second-order low-pass filter circuit output, and filters out the exchange letter
Low-frequency interference signal in number；
Signal after filtering out low-frequency interference signal is amplified by the second amplifying circuit；
The integrating circuit is that the acceleration signal that the second amplifying circuit exports is converted into speed by Integral Processing to believe
Number；
The two level ac-coupled circuit handles the rate signal, and filters out the low frequency component in the rate signal；
The rate signal after low frequency component is filtered out described in the three-stage amplifier amplification.
3. relay according to claim 1 or 2 exports vibration velocity transmitter, it is characterised in that the secondary signal
Processing unit, including：
RMS-DC converter circuit, filter circuit and impedance inverter circuit；
Rate signal after processing is carried out peak value RMS-DC converter by the RMS-DC converter circuit, and the direct current after conversion is divided
To the low-pass filter circuit, the low-pass filter circuit filters out the high fdrequency component of the DC component signal for amount output；
The impedance inverter circuit reduces the output impedance of the DC component signal after filtering out high fdrequency component.
4. relay according to claim 1 exports vibration velocity transmitter, it is characterised in that also includes：
Output loop protection circuit is connected with the voltage-current converter circuit, and power supply is become into nonpolarity connection.
5. relay according to claim 1 exports vibration velocity transmitter, it is characterised in that also includes：
Alarm unit, the alarm unit are connected with the relay output end.
6. relay according to claim 1 exports vibration velocity transmitter, it is characterised in that the piezoelectric transducer is
Piezoelectric ceramics.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720760851.5U CN206876294U (en) | 2017-06-28 | 2017-06-28 | A kind of relay exports vibration velocity transmitter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720760851.5U CN206876294U (en) | 2017-06-28 | 2017-06-28 | A kind of relay exports vibration velocity transmitter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206876294U true CN206876294U (en) | 2018-01-12 |
Family
ID=61331559
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720760851.5U Withdrawn - After Issue CN206876294U (en) | 2017-06-28 | 2017-06-28 | A kind of relay exports vibration velocity transmitter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206876294U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107421631A (en) * | 2017-06-28 | 2017-12-01 | 沈阳振科仪表有限公司 | A kind of relay exports vibration velocity transmitter |
-
2017
- 2017-06-28 CN CN201720760851.5U patent/CN206876294U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107421631A (en) * | 2017-06-28 | 2017-12-01 | 沈阳振科仪表有限公司 | A kind of relay exports vibration velocity transmitter |
| CN107421631B (en) * | 2017-06-28 | 2023-07-28 | 沈阳振科仪表有限公司 | Relay output vibration speed transmitter |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP02 | Change in the address of a patent holder |
Address after: 110000 gate 1, 77-13, No.13 Road, Shenyang Economic and Technological Development Zone, Liaoning Province Patentee after: SHENYANG VIBROTECH INSTRUMENTS Co.,Ltd. Address before: 110020 1001, block B, AIDU international, 57 Jianshe East Road, Tiexi District, Shenyang City, Liaoning Province Patentee before: SHENYANG VIBROTECH INSTRUMENTS Co.,Ltd. |
|
| CP02 | Change in the address of a patent holder | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20180112 Effective date of abandoning: 20230728 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20180112 Effective date of abandoning: 20230728 |
|
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |