CN201429563Y - Turbidity-degree on-line detecting sensor - Google Patents
Turbidity-degree on-line detecting sensor Download PDFInfo
- Publication number
- CN201429563Y CN201429563Y CN2009200428818U CN200920042881U CN201429563Y CN 201429563 Y CN201429563 Y CN 201429563Y CN 2009200428818 U CN2009200428818 U CN 2009200428818U CN 200920042881 U CN200920042881 U CN 200920042881U CN 201429563 Y CN201429563 Y CN 201429563Y
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- chip microcomputer
- turbidity
- degree
- detecting sensor
- semiconductor light
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Abstract
The utility model discloses a turbidity-degree on-line detecting sensor, which comprises an LED semiconductor light source which is connected with the D/A output end of a single chip, wherein the nearside of the LED semiconductor light source is provided with a reflection-type lens which outputs light respectively to two photovoltaic cells, the two photovoltaic cells are respectively connected with A/D of the single chip, and the single chip adopts a serial data interface to output the data and to receive the control. The turbidity-degree on-line detecting sensor has reasonable structure, good performance, small size, low cost and high reliability.
Description
Technical field:
The utility model relates to a kind of turbidity detecting line sensor.
Background technology:
In the prior art, turbidity sensor partly is made up of light source, photosensitive device, signal amplifier, testing circuit etc.Because light source, photosensitive device, the signal processing circuit of detecting sensor all will adopt the very high high performance device of cost to guarantee sensitivity, precision and the linearity that detects, therefore the price of such sensor is very expensive, and owing to be subjected to the influence of the device temperature stability and the linearity, performance still can not be fully up to expectations.
Summary of the invention:
It is a kind of rational in infrastructure that the purpose of this utility model is to provide, and performance is good, and volume is little, the turbidity detecting line sensor that reliability is high.
Technical solution of the present utility model is:
A kind of turbidity detecting line sensor, it is characterized in that: comprise the LED semiconductor light sources that is connected with the D/A output terminal of single-chip microcomputer, LED semiconductor light sources nearside is provided with the reflective lens of exporting light respectively to two photoelectric cells, two photoelectric cells are connected with the A/D of single-chip microcomputer respectively, and single-chip microcomputer adopts the serial data interface output data and accepts control.
The utility model is rational in infrastructure, and performance is good, and volume is little, and cost is low, the reliability height.Of the present utility model being also advantageous in that:
1, light source of the present invention adopts the LED semiconductor light sources, and light source links to each other with the D/A output terminal of single-chip microcomputer, is subjected to the control of single-chip microcomputer, and this light source power consumption is low, the life-span is long, owing to can change the intensity of light source, the sensing range and the linearity is improved.
2, adopt reflective lens, light source is by optical devices output two-way light, and the tested medium of leading up to arrives a photoelectric cell, and another road arrives another photoelectric cell by inner light path.This design can improve the performance of sensor by the photronic difference processing of two-way.
3, adopt the A/D conversion, two photronic analog signal conversion are become digital signal, carry out linear compensation and intelligence check and correction, simplify circuit, reduce cost by software.
4, the OTP single-chip microcomputer that adopts band D/A, A/D is simplified circuit by direct control survey of programming and data output, reduces cost.
5, adopt RS485 bus data interface, output data and accept control makes sensor become the sensor that can networking uses.
Description of drawings:
The utility model is described in further detail below in conjunction with drawings and Examples.
Fig. 1 is the configuration diagram of an embodiment of the utility model.
Embodiment:
A kind of turbidity detecting line sensor, comprise housing 1, the LED semiconductor light sources 5 that dress is connected with the D/A output terminal of single-chip microcomputer 6 in the housing 1, LED semiconductor light sources nearside is provided with the reflective lens 4 of exporting light respectively to two photoelectric cells 2,3, two photoelectric cells connect with the different A/D modular converters of single-chip microcomputer respectively, and single-chip microcomputer adopts RS485 bus data interface 7 output datas and accepts control.
Principle of work of the present utility model is:
After the sensor energize, single-chip microcomputer (CPU adopts P87LPC769) is started working, and light source 5 is lighted, and sensor is according to original state work of setting or remembering.Single-chip microcomputer is regulated the electric current of exporting to light source according to the measurement result of photoelectric cell 3, guarantees that output intensity is constant.When measuring that range changes or measure linear degree compensation when needing, light intensity data is just adjusted.The output of measurement photoelectric cells 2 is carried out numerical filter, is adjusted and linearity compensation by single-chip microcomputer through after the A/D conversion, and regularly storage.When single-chip microcomputer finds that the numerical value of photoelectric cell 2 outputs exceeds linear measurement range, will adjust range automatically to guarantee the correct of measurement result.When sensor carried out regular calibration, single-chip microcomputer scanned automatic gamut, and write down two photronic corresponding numerical value, the usefulness of compensation when measured.The communication port circuit 7 that links to each other with single-chip microcomputer receives after the instruction of surveying instrument, and single-chip microcomputer will comprise setting, measurement and data output etc. according to instruction works.
Claims (1)
1, a kind of turbidity detecting line sensor, it is characterized in that: comprise the LED semiconductor light sources that is connected with the D/A output terminal of single-chip microcomputer, LED semiconductor light sources nearside is provided with the reflective lens of exporting light respectively to two photoelectric cells, two photoelectric cells are connected with the A/D of single-chip microcomputer respectively, and single-chip microcomputer adopts the serial data interface output data and accepts control.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN2009200428818U CN201429563Y (en) | 2009-06-08 | 2009-06-08 | Turbidity-degree on-line detecting sensor |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN2009200428818U CN201429563Y (en) | 2009-06-08 | 2009-06-08 | Turbidity-degree on-line detecting sensor |
Publications (1)
Publication Number | Publication Date |
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CN201429563Y true CN201429563Y (en) | 2010-03-24 |
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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CN2009200428818U Expired - Fee Related CN201429563Y (en) | 2009-06-08 | 2009-06-08 | Turbidity-degree on-line detecting sensor |
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CN (1) | CN201429563Y (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101947520A (en) * | 2010-08-06 | 2011-01-19 | 爱阔特(上海)清洗设备制造有限公司 | Automatic cleaning method maintaining stable cleaning effect and cleaning machine |
-
2009
- 2009-06-08 CN CN2009200428818U patent/CN201429563Y/en not_active Expired - Fee Related
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101947520A (en) * | 2010-08-06 | 2011-01-19 | 爱阔特(上海)清洗设备制造有限公司 | Automatic cleaning method maintaining stable cleaning effect and cleaning machine |
CN101947520B (en) * | 2010-08-06 | 2012-07-04 | 爱阔特(上海)清洗设备制造有限公司 | Automatic cleaning method maintaining stable cleaning effect and cleaning machine |
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Legal Events
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 | ||
CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100324 Termination date: 20180608 |