CN203133537U - Piezoelectric type detector - Google Patents
Piezoelectric type detector Download PDFInfo
- Publication number
- CN203133537U CN203133537U CN 201320084279 CN201320084279U CN203133537U CN 203133537 U CN203133537 U CN 203133537U CN 201320084279 CN201320084279 CN 201320084279 CN 201320084279 U CN201320084279 U CN 201320084279U CN 203133537 U CN203133537 U CN 203133537U
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- CN
- China
- Prior art keywords
- circuit
- piezoelectric
- piezoelectric type
- pass filter
- chip microcomputer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model relates to a piezoelectric type detector, comprising a piezoelectric type sensing circuit and a one-chip microcomputer control circuit. Output signals of the piezoelectric type sensing circuit are transmitted to a low pass filter circuit through a signal amplification circuit; output signals of the low pass filter circuit are transmitted to the one-chip microcomputer control circuit; output signals of the one-chip microcomputer control circuit are sent to a RS485 communication interface circuit and an alarm circuit. The piezoelectric type detector employs the piezoelectric type sensing circuit to collect signals; when piezoelectric signals exist, the piezoelectric signals are judged by the one-chip microcomputer control circuit and are in connection an industrial control system through a standard interface; the piezoelectric type detector possess the advantages of strong compatibility, simple installation, etc.
Description
Technical field
The utility model relates to a kind of tester, particularly be a kind of piezoelectric detector.
Background technology
Piezoelectric sensor is widely used in the electromechanical automatic control system, but traditional piezoelectric sensor is transmission of electric signals, can not be directly in industrial automation control system.
The utility model content
The purpose of this utility model is to provide a kind of piezoelectric detector.
The technical scheme that its technical matters that solves the utility model adopts is: a kind of piezoelectric detector, comprise piezoelectric type sensing circuit and single chip machine controlling circuit, the output signal of described piezoelectric type sensing circuit is transferred to low-pass filter circuit through signal amplification circuit, the output signal of described low-pass filter circuit is sent to single chip machine controlling circuit, and the output signal of described single chip machine controlling circuit sends to RS485 communication interface circuit and warning circuit.
Described piezoelectric type sensing circuit adopts vibration transducer HQ to gather signal.
Described signal amplification circuit adopts AD544L amplifier IC2.
Described low-pass filter circuit adopts UA775 low-pass filter IC3.
Described single chip machine controlling circuit adopts 2051 single-chip microcomputer IC1.
Described RS485 communication interface circuit drives chip IC 4 transmission data messages by 75176 interfaces and is sent to the industrialization control system.
By adopting above-mentioned technical scheme, the beneficial effects of the utility model are: the utility model adopts the piezoelectric type sensing circuit to gather signal, when piezoelectric signal, after single chip machine controlling circuit is judged, connect the industrialization control system by standard interface, have advantages such as compatibility is strong, installation is simple.
Description of drawings
Fig. 1 is frame assumption diagram of the present utility model;
Fig. 2 is circuit theory diagrams of the present utility model.
Embodiment
The utility model is described in further detail below in conjunction with accompanying drawing.
As shown in Figure 1 and Figure 2, a kind of piezoelectric detector of the present utility model, comprise piezoelectric type sensing circuit 1 and single chip machine controlling circuit 2, the output signal of described piezoelectric type sensing circuit 1 is transferred to low-pass filter circuit 12 through signal amplification circuit 11, the output signal of described low-pass filter circuit 12 is sent to single chip machine controlling circuit 2, and the output signal of described single chip machine controlling circuit 2 sends to RS485 communication interface circuit 21 and warning circuit 22.
Described piezoelectric type sensing circuit 1 adopts vibration transducer HQ to gather signal, vibration transducer HQ is installed in the shock-reducing rubber gesture of shaking table bottom, when shaking table is worked, during vibration transducer HQ pressurized, transfer vibration signal to electric signal, through resistance R 1 current limliting, be input to AD544L amplifier IC2, by the low-frequency cut-off frequency of the internal amplifier of AD544L amplifier IC2 0.6Hz (normal value is 0.9Hz), after AD544L amplifier IC2 amplifies, being input to UA775 low-pass filter IC3 again carries out second level amplification and carries out low-pass filtering, after UA775 low-pass filter IC3 output, be input to the 19th pin I/O end of 2051 single-chip microcomputer IC1 again, after 2051 single-chip microcomputer IC1 internal datas are handled judgement, divide two-way to send control signal, drive chip IC 4 by 2051 single-chip microcomputer IC1 and 75176 interfaces and connect to form logical data circuit, drive chip IC 4 by 2051 single-chip microcomputer IC1 to 75176 interfaces and send the driving command signal, after 75176 interfaces drive chip IC 4 inner decoding, be converted to communication interface by the RS485 system bus, the outputting standard protocol signal, can connect industrial automation control system, another road output, the 14th pin output low level by 2051 single-chip microcomputer IC1, make news Chinese percussion instrument BL send the prompting sound, have compatible strong, advantages such as simple are installed.
Above-described only is a preferred embodiment of the present utility model, can not limit the scope that the utility model is implemented, and every equalization of doing according to the utility model claim changes and decorates, and all should still belong in the scope that the utility model contains.
Claims (6)
1. piezoelectric detector, it is characterized in that: comprise piezoelectric type sensing circuit (1) and single chip machine controlling circuit (2), the output signal of described piezoelectric type sensing circuit (1) is transferred to low-pass filter circuit (12) through signal amplification circuit (11), the output signal of described low-pass filter circuit (12) is sent to single chip machine controlling circuit (2), and the output signal of described single chip machine controlling circuit (2) sends to RS485 communication interface circuit (21) and warning circuit (22).
2. piezoelectric detector according to claim 1 is characterized in that: described piezoelectric type sensing circuit (1) employing vibration transducer HQ collection signal.
3. piezoelectric detector according to claim 1 and 2 is characterized in that: described signal amplification circuit (11) employing AD544L amplifier IC2.
4. piezoelectric detector according to claim 1 and 2 is characterized in that: described low-pass filter circuit (12) employing UA775 low-pass filter IC3.
5. piezoelectric detector according to claim 1 is characterized in that: described single chip machine controlling circuit (2) employing 2051 single-chip microcomputer IC1.
6. piezoelectric detector according to claim 1 is characterized in that: described RS485 communication interface circuit (21) drives chip IC 4 by 75176 interfaces and sends data messages and be sent to the industrialization control system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320084279 CN203133537U (en) | 2013-02-21 | 2013-02-21 | Piezoelectric type detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320084279 CN203133537U (en) | 2013-02-21 | 2013-02-21 | Piezoelectric type detector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203133537U true CN203133537U (en) | 2013-08-14 |
Family
ID=48941504
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320084279 Expired - Fee Related CN203133537U (en) | 2013-02-21 | 2013-02-21 | Piezoelectric type detector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203133537U (en) |
-
2013
- 2013-02-21 CN CN 201320084279 patent/CN203133537U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130814 Termination date: 20140221 |