CN204086432U - The decision circuit of sensor die analog quantity range of signal - Google Patents
The decision circuit of sensor die analog quantity range of signal Download PDFInfo
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- CN204086432U CN204086432U CN201420596885.1U CN201420596885U CN204086432U CN 204086432 U CN204086432 U CN 204086432U CN 201420596885 U CN201420596885 U CN 201420596885U CN 204086432 U CN204086432 U CN 204086432U
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- resistance
- stable pressure
- accurate source
- controllable accurate
- pressure chip
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- 238000012544 monitoring process Methods 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 2
- 230000001052 transient effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 230000003116 impacting effect Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 238000004148 unit process Methods 0.000 description 1
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Abstract
The utility model relates to sensor die analog quantity signal decision circuit, is specially the decision circuit of sensor die analog quantity range of signal, solves and lacks this decision circuit problem at present.Technical scheme is as follows: comprise the first-seven resistance, first, second controllable accurate source of stable pressure chip, light emitting diode, phototriode output type optocoupler; First, second resistant series dividing potential drop, three, the 4th resistant series dividing potential drop, 5th-seven resistance current limliting prevents the diode of the second controllable accurate source of stable pressure, phototriode output type optocoupler and light emitting diode to be subject to heavy current impact, first, second controllable accurate source of stable pressure chip is connected in parallel on the second resistance side and the 4th resistance side respectively, triode end series connection the 7th resistance and the light emitting diode of phototriode output type optocoupler.The utility model advantage is: 1, Real-Time Monitoring and the off-limits sensor signal of early warning; 2, avoid taking processing unit resource real-time processing data for a long time, consume electric energy, shorten the problems such as life-span.
Description
Technical field
The utility model relates to sensor die analog quantity signal decision circuit, is specially the decision circuit of sensor die analog quantity range of signal.
Background technology
In practical engineering application, sometimes need the state knowing monitored equipment in real time, this signal just needing the real-time processes sensor of processing unit to send.The signal that sensor sends has digital quantity and analog quantity two kinds, because analog quantity is convenient to secondary development, so the signal that Practical Project spot sensor sends is all analog quantity mostly.Analog signals can be divided into again scope amount and transient signal two class, due to the Monitoring Data that the real-time processes sensor of processing unit sends, not only take the resource of a large amount of processing unit, also very consume electric energy and the serviceable life of shortening processing unit, especially have severely restricts to battery powered equipment; Meanwhile, processing unit processes analog data needs regular hour expense, and some transient signal, the duration only has several milliseconds or shorter, is easy to cause data to fail to report or do not collect.Therefore the decision circuit designing a kind of sensor die analog quantity range of signal is necessary.
Summary of the invention
The utility model solves the decision circuit problem lacking sensor die analog quantity range of signal at present, provides a kind of decision circuit of sensor die analog quantity range of signal.
The utility model is achieved through the following technical solutions: the decision circuit of sensor die analog quantity range of signal, comprising: the first-seven resistance, first, second controllable accurate source of stable pressure chip, light emitting diode, phototriode output type optocoupler, one end of described first resistance is connected with the reference pole of the first controllable accurate source of stable pressure chip, the negative pole of the first controllable accurate source of stable pressure chip is connected to after the other end of described first resistance and the 3rd resistant series, the second resistance is connected with between the reference pole of described first controllable accurate source of stable pressure chip and positive pole, the 4th resistance is connected with between the positive pole of described first controllable accurate source of stable pressure chip and negative pole, the negative pole of described first controllable accurate source of stable pressure chip is connected with the reference pole of the second controllable accurate source of stable pressure chip, the positive pole of described first controllable accurate source of stable pressure chip is connected with the positive pole of the second controllable accurate source of stable pressure chip, described first, the link of the 3rd resistance is connected with the negative pole of the second controllable accurate source of stable pressure chip after the 5th resistance, and first, the link of the 3rd resistance is as signal input part, the link ground connection of the second resistance and the 4th resistance, the positive pole of described second controllable accurate source of stable pressure chip is connected with the negative pole of phototriode output type optocoupler, the negative pole of the second controllable accurate source of stable pressure chip is connected with the positive pole of phototriode output type optocoupler, the positive pole of described phototriode output type optocoupler is connected with the collector of phototriode output type optocoupler after the 6th resistance, the collector of phototriode output type optocoupler is connected with power supply, the emitter of phototriode output type optocoupler is connected with the positive pole of light emitting diode after the 7th resistance, the minus earth of light emitting diode, the link of light emitting diode and the 7th resistance is as signal output part.R1 and R2 series connection dividing potential drop in circuit; R3 and R4 connects dividing potential drop; and the branch road of above-mentioned two series connection is parallel with one another; R5 is the protective resistance preventing input big current from impacting U2; R6, R7 are current-limiting resistance, and according to R2 both end voltage size, U1 can determine that U1 conducting still disconnects, according to R4 both end voltage size, U2 determines that U2 conducting still disconnects; whether U3 controls the work of right side LEDs, to realize warning function according to the break-make situation of left side U1, U2.
First, second controllable accurate source of stable pressure chip described is TL431 chip.
The utility model has the following advantages: 1, Real-Time Monitoring and early warning can exceed the sensor signal of a certain scope; 2, avoid processing unit real-time processing data, that brings takies resource, consumes electric energy, shortens the problems such as life-span.
Accompanying drawing explanation
Fig. 1 is circuit diagram of the present utility model.
R1-first resistance in figure, R2-second resistance, R3-the 3rd resistance, R4-the 4th resistance, R5-the 5th resistance, R6-the 6th resistance, R7-the 7th resistance, U1-first controllable accurate source of stable pressure chip, U2-second controllable accurate source of stable pressure chip, U3-phototriode output type optocoupler, D1-light emitting diode, VCC-power supply, IN-signal input part, OUT-signal output part.
Embodiment
The decision circuit of sensor die analog quantity range of signal, comprising: the first resistance R1-the 7th resistance R7, the first controllable accurate source of stable pressure chip U1, the second controllable accurate source of stable pressure chip U2, light emitting diode D1, phototriode output type optocoupler U3, one end of described first resistance R1 is connected with the reference pole of the first controllable accurate source of stable pressure chip U1, the other end of described first resistance R1 is connected to the negative pole of the first controllable accurate source of stable pressure chip U1 after connecting with the 3rd resistance R3, the second resistance R2 is connected with between the reference pole of described first controllable accurate source of stable pressure chip U1 and positive pole, the 4th resistance R4 is connected with between the positive pole of described first controllable accurate source of stable pressure chip U1 and negative pole, the negative pole of described first controllable accurate source of stable pressure chip U1 is connected with the reference pole of the second controllable accurate source of stable pressure chip U2, the positive pole of described first controllable accurate source of stable pressure chip U1 is connected with the positive pole of the second controllable accurate source of stable pressure chip U2, described first resistance R1, the link of the 3rd resistance R3 is connected with the negative pole of the second controllable accurate source of stable pressure chip U2 after the 5th resistance R5, and the first resistance R1, the link of the 3rd resistance R3 is as signal input part IN, the link ground connection of the second resistance R2 and the 4th resistance R4, the positive pole of described second controllable accurate source of stable pressure chip U2 is connected with the negative pole of phototriode output type optocoupler U3, the negative pole of the second controllable accurate source of stable pressure chip U2 is connected with the positive pole of phototriode output type optocoupler U3, the positive pole of described phototriode output type optocoupler U3 is connected with the collector of phototriode output type optocoupler after the 6th resistance R6, the collector of phototriode output type optocoupler U3 is connected with power supply VCC, the emitter of phototriode output type optocoupler U3 is connected with the positive pole of light emitting diode D1 after the 7th resistance R7, the minus earth of light emitting diode D1, the link of light emitting diode D1 and the 7th resistance R7 is as signal output part OUT.During use, sensor holds an input voltage signal (technician can adopt the mode of contact resistance that current signal is converted to voltage signal), according to circuit connecting relation: the threshold voltage scope that this decision circuit is determined is: the upper limit (1+R1/R2) V1 from IN
rEF, lower limit (1+R3/R4) V2
rEF, wherein V1
rEF, V2
rEFbe respectively the reference voltage of U1, U2.When the scope of input voltage VIN is: (1+R1/R2) V1
rEF>VIN> (1+R3/R4) V2
rEFtime, U2 conducting, the light emitting diode of U3, by U2 short circuit, makes the non-conducting of U3 phototriode, and light emitting diode D1 powers cut-out; As VIN> (1+R1/R2) V1
rEFtime, then U2 not conducting, U1 conducting, the light emitting diode of U3 is lighted, and make the conducting of U3 phototriode, light emitting diode D1 lights; As VIN< (1+R3/R4) V2
rEFtime, U1, U2 not conductings, the light emitting diode of U3 is lighted, make the phototriode conducting of U3, light emitting diode D1 lights, and namely realizes warning function, and simultaneously the signal output part OUT of decision circuitry provides input signal for the judgement of range signal for follow-up processing unit.
During concrete enforcement, first, second controllable accurate source of stable pressure chip described is TL431 chip.
Claims (2)
1. the decision circuit of a sensor die analog quantity range of signal, it is characterized in that: comprising: the first resistance (R1)-seven resistance (R7), first controllable accurate source of stable pressure chip (U1), second controllable accurate source of stable pressure chip (U2), light emitting diode (D1), phototriode output type optocoupler (U3); one end of described first resistance (R1) is connected with the reference pole of the first controllable accurate source of stable pressure chip (U1), the other end of described first resistance (R1) is connected to the negative pole of the first controllable accurate source of stable pressure chip (U1) after connecting with the 3rd resistance (R3), the second resistance (R2) is connected with between the reference pole of described first controllable accurate source of stable pressure chip (U1) and positive pole, the 4th resistance (R4) is connected with between the positive pole of described first controllable accurate source of stable pressure chip (U1) and negative pole, the negative pole of described first controllable accurate source of stable pressure chip (U1) is connected with the reference pole of the second controllable accurate source of stable pressure chip (U2), the positive pole of described first controllable accurate source of stable pressure chip (U1) is connected with the positive pole of the second controllable accurate source of stable pressure chip (U2), described first resistance (R1), the link of the 3rd resistance (R3) is connected with the negative pole of the second controllable accurate source of stable pressure chip (U2) after the 5th resistance (R5), and the first resistance (R1), the link of the 3rd resistance (R3) is as signal input part (IN), the link ground connection of the second resistance (R2) and the 4th resistance (R4), the positive pole of described second controllable accurate source of stable pressure chip (U2) is connected with the negative pole of phototriode output type optocoupler (U3), the negative pole of the second controllable accurate source of stable pressure chip (U2) is connected with the positive pole of phototriode output type optocoupler (U3), the positive pole of described phototriode output type optocoupler (U3) is connected with the collector of phototriode output type optocoupler after the 6th resistance (R6), the collector of phototriode output type optocoupler (U3) is connected with power supply (VCC), the emitter of phototriode output type optocoupler (U3) is connected with the positive pole of light emitting diode (D1) after the 7th resistance (R7), the minus earth of light emitting diode (D1), the link of light emitting diode (D1) and the 7th resistance (R7) is as signal output part (OUT).
2. the decision circuit of sensor die analog quantity range of signal according to claim 1, is characterized in that: described first controllable accurate source of stable pressure chip (U1), the second controllable accurate source of stable pressure chip (U2) are TL431 chip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420596885.1U CN204086432U (en) | 2014-10-16 | 2014-10-16 | The decision circuit of sensor die analog quantity range of signal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420596885.1U CN204086432U (en) | 2014-10-16 | 2014-10-16 | The decision circuit of sensor die analog quantity range of signal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204086432U true CN204086432U (en) | 2015-01-07 |
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ID=52179133
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420596885.1U Expired - Fee Related CN204086432U (en) | 2014-10-16 | 2014-10-16 | The decision circuit of sensor die analog quantity range of signal |
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| Country | Link |
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| CN (1) | CN204086432U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105680408A (en) * | 2016-03-17 | 2016-06-15 | 余姚市嘉荣电子电器有限公司 | Abutting circuit of water flow sensor |
| CN112379154A (en) * | 2020-10-30 | 2021-02-19 | 中车大连电力牵引研发中心有限公司 | Wide-range voltage signal acquisition circuit based on TL431 |
-
2014
- 2014-10-16 CN CN201420596885.1U patent/CN204086432U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105680408A (en) * | 2016-03-17 | 2016-06-15 | 余姚市嘉荣电子电器有限公司 | Abutting circuit of water flow sensor |
| CN112379154A (en) * | 2020-10-30 | 2021-02-19 | 中车大连电力牵引研发中心有限公司 | Wide-range voltage signal acquisition circuit based on TL431 |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150107 |
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| CF01 | Termination of patent right due to non-payment of annual fee |