CN101436049A - Multiple-pass analog quantity acquiring device - Google Patents
Multiple-pass analog quantity acquiring device Download PDFInfo
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- CN101436049A CN101436049A CNA2008102199669A CN200810219966A CN101436049A CN 101436049 A CN101436049 A CN 101436049A CN A2008102199669 A CNA2008102199669 A CN A2008102199669A CN 200810219966 A CN200810219966 A CN 200810219966A CN 101436049 A CN101436049 A CN 101436049A
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- analog quantity
- gating circuit
- acquiring device
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- acquisition interface
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Abstract
The invention discloses a multi-channel analog quantity acquisition device, which comprises a PLC analog quantity acquisition interface, wherein two gates and a timer form a gating circuit, and the gating circuit expands the PLC analog quantity acquisition interface. The gating circuit automatically changes the gating state every 0.5 second and outputs a control signal to the PLC analog quantity acquisition interface to ensure that a PLC judges the current gating state at the same time. The gating circuit has sixteen paths of outputs, wherein four paths of outputs are provided for the PLC analog quantity acquisition interface. The power supply voltage of the gating circuit is provided by a voltage regulator chip. The model of the gates is CD4052. The model of the timer is CD4060. Compared with I/O expansion technologies odopting other analog quantity, the acquisition device has the characteristics of small volume, low cost, high precision, high reliability, and low fault rate of a system.
Description
Technical field
The present invention relates to a kind of analog quantity acquiring device, particularly a kind of multiple-pass analog quantity acquiring device.
Background technology
In present automation instrument industry, usually the demand that the quantity that adopts the quantity that increases the analog quantity load module to satisfy the analog quantity input increases, but, costing an arm and a leg of analog quantity load module, when the quantity of analog quantity load module was many, its probability that breaks down also strengthened simultaneously.And the analog quantity load module too much will cause the volume of electric cabinet and cost of manufacture all to increase.Therefore, be necessary further improvement and perfect.
Summary of the invention
Purpose of the present invention aims to provide a kind of simple and reasonable, volume is little, cost of manufacture is low, system failure rate is low multiple-pass analog quantity acquiring device, to overcome weak point of the prior art.
A kind of multiple-pass analog quantity acquiring device by this purpose design comprises PLC analog acquisition interface, it is characterized in that constituting gating circuit by two gates and a timer, and this gating circuit expands PLC analog acquisition interface.
Described gating circuit carried out a strobe state in per 0.5 second automatically and changes, and exported first control signal and second control signal simultaneously and gave PLC analog acquisition interface, made PLC judge current strobe state.
After described two gates first output terminal separately joins, be electrically connected with the base stage of first triode, export first control signal, after two gates, second output terminal separately joins by its collector, be electrically connected with the base stage of second triode, export second control signal by its collector.
Described gating circuit has ten six tunnel outputs, and wherein, the four tunnel export to PLC analog acquisition interface.The supply voltage of gating circuit is provided by the voltage stabilizing chip.The model of gate is CD4052.The model of timer is CD4060.
The present invention compares with adopting other analog quantitys I/O expansion technique, has the advantages that volume is little, cost is low, precision is high, reliability is high and system failure rate is low.
Description of drawings
Fig. 1 is the gating circuit figure in one embodiment of the invention.
Fig. 2 is ten six road output interface circuit figure among the present invention.
Fig. 3 is the power supply connection layout among the present invention.
Fig. 4 is circuit board figure of the present invention.
Embodiment
Below in conjunction with drawings and Examples the present invention is further described.
Referring to Fig. 1, this multiple-pass analog quantity acquiring device comprises PLC analog acquisition interface, constitutes gating circuit by two gate integrated circuit (IC) 1 and IC2 and a timer integrated circuit (IC) 4, and this gating circuit expands PLC analog acquisition interface.Gating circuit carried out a strobe state in per 0.5 second automatically and changes, and exported the first control signal A00 and the second control signal A11 simultaneously and gave PLC analog acquisition interface, made PLC judge current strobe state.After two gate integrated circuit (IC) 1 and IC2 first output terminals A 0 are separately joined, be electrically connected, export the first control signal A00 by its collector with the base stage of the first triode Q1; After two gate integrated circuit (IC) 1 and IC2 second output terminals A 1 are separately joined, be electrically connected, export the second control signal A11 by its collector with the base stage of the second triode Q2.Gating circuit has ten six tunnel outputs, and wherein, the four tunnel export to PLC analog acquisition interface.The model of gate is CD4052, and the model of timer is CD4060.
Referring to Fig. 2, describe with wherein the 4th interface circuit and the 8th interface circuit, capacitor C 8 is a filter capacitor with capacitor C 10, filters the influence of high frequency clutter, D7 and D9 are voltage stabilizing diodes.R16, R20 are divider resistance, choose the metalfilmresistor of 1 ‰ precisions, make this circuit reach minimum to the influence of systematic error.Interface circuit is mainly realized electric current, voltage transitions and protection.
Referring to Fig. 3, the supply voltage of gating circuit is provided by voltage stabilizing chip IC 3, and its model is 7812, and capacitor C 3 is a High frequency filter, and electrochemical capacitor E1 is a low frequency filtering and level and smooth.
Referring to Fig. 4, be PCB figure, it adopts dual platen, and two-sided shop copper is to reduce electromagnetic disturbance.
Claims (7)
1. a multiple-pass analog quantity acquiring device comprises PLC analog acquisition interface, it is characterized in that constituting gating circuit by two gates (IC1, IC2) and a timer (IC4), and this gating circuit expands PLC analog acquisition interface.
2. according to the described multiple-pass analog quantity acquiring device of claim 1, it is characterized in that described gating circuit carried out a strobe state in per 0.5 second automatically and changes, export first control signal (A00) and second control signal (A11) simultaneously and give PLC analog acquisition interface, make PLC judge current strobe state.
3. according to the described multiple-pass analog quantity acquiring device of claim 2, after it is characterized in that described two gates first output terminal (A0) separately joins, be electrically connected with the base stage of first triode (Q1), export first control signal by its collector, after two gates, second output terminal (A1) separately joins, be electrically connected with the base stage of second triode (Q2), export second control signal by its collector.
4. according to the described multiple-pass analog quantity acquiring device of claim 2, it is characterized in that described gating circuit has ten six tunnel outputs, wherein, the four tunnel export to PLC analog acquisition interface.
5. according to the described multiple-pass analog quantity acquiring device of claim 3, it is characterized in that the supply voltage of described gating circuit is provided by voltage stabilizing chip (IC3).
6. according to the described multiple-pass analog quantity acquiring device of claim 4, the model that it is characterized in that described gate is CD4052.
7. according to the described multiple-pass analog quantity acquiring device of claim 1, the model that it is characterized in that described timer is CD4060.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008102199669A CN101436049A (en) | 2008-12-09 | 2008-12-09 | Multiple-pass analog quantity acquiring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008102199669A CN101436049A (en) | 2008-12-09 | 2008-12-09 | Multiple-pass analog quantity acquiring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101436049A true CN101436049A (en) | 2009-05-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2008102199669A Pending CN101436049A (en) | 2008-12-09 | 2008-12-09 | Multiple-pass analog quantity acquiring device |
Country Status (1)
| Country | Link |
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| CN (1) | CN101436049A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102298367A (en) * | 2011-06-02 | 2011-12-28 | 武汉钢铁(集团)公司 | Standardized general-type analog quantity optimization control method |
| WO2022217822A1 (en) * | 2021-04-15 | 2022-10-20 | 精进电动科技股份有限公司 | Universal controller externally provided with selection circuit and new energy vehicle |
-
2008
- 2008-12-09 CN CNA2008102199669A patent/CN101436049A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102298367A (en) * | 2011-06-02 | 2011-12-28 | 武汉钢铁(集团)公司 | Standardized general-type analog quantity optimization control method |
| WO2022217822A1 (en) * | 2021-04-15 | 2022-10-20 | 精进电动科技股份有限公司 | Universal controller externally provided with selection circuit and new energy vehicle |
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| Date | Code | Title | Description |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20090520 |