CN103353723A - Photoelectric switch having simulation alarm function - Google Patents
Photoelectric switch having simulation alarm function Download PDFInfo
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- CN103353723A CN103353723A CN2013102817953A CN201310281795A CN103353723A CN 103353723 A CN103353723 A CN 103353723A CN 2013102817953 A CN2013102817953 A CN 2013102817953A CN 201310281795 A CN201310281795 A CN 201310281795A CN 103353723 A CN103353723 A CN 103353723A
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- optoelectronic switch
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Abstract
The invention provides a photoelectric switch having a simulation alarm function. The photoelectric switch having the simulation alarm function includes an optical transmitting module, an optical receiving module, a signal processing unit, a signal output unit and a simulation test unit. The optical transmitting module transmits optical signals. The optical transmitting module is used for transmitting the optical signals. The optical receiving module is used for receiving the optical signals. The signal processing unit converts the optical signals to electric signals. The simulation test unit processes the electric signals and outputs simulation alarm signals through the signal output unit. The signal output unit outputs control signals to control an external device when the simulation test unit is performing simulation output. According to the invention, a state of an object to be tested does not need to change and output of multiple kinds of the simulation alarm signals is realized. At the same time, time delay responses of high-viscosity fluid and high-viscoelasticity fluid can be simulated by the photoelectric switch having the simulation alarm function.
Description
Technical field
The present invention designs a kind of photoelectric switch, particularly a kind of optoelectronic switch with analog alarm function.
Background technology
Existing optoelectronic switch measuring equipment operating principle is shown in the first figure, and it comprises a light emission module (13), an optical receiving set (14), a signal processing unit (15), a signal output circuit (16).
When object under test does not exist when occurring with object under test, can present two kinds of receive statuss of not sharing the same light, a kind of is that optical receiving set receives signal, or does not receive signal.After the signal processing, the conversion of this signal can with the photoelectricity measuring equipment as a switchgear, be used for controlling the equipment of other rear ends.
Above-mentioned known techniques in the ordinary course of things; correct output measures that determinand is actual to be occurred or non-existent state only; yet this circuit has a shortcoming; after measuring the device installation; the user can think to carry out first the test of system usually; must actually change the present condition that of determinand this moment; just can carry out the test of total system; but in the occasion of practical application; whether really not so easy and convenient the appearance of control determinand is; may need consuming time very for a long time, even may need to be depleted to material to be measured, so all will increase set-up time and Material Cost.
Present existing technology U.S. Pat. No. 4,201,914 only can carry out analog alarm in a bucket groove high position with U.S. Pat. No. 4,134,022; And at U.S. Pat. No.4, in 354,180, such as the second figure, although high-low-position can both be exported alarm, the method that adopts is the signal that will sense, no matter be a high position or low level, all use the electric signal of a state, recycle this signal and carry out alarm output, this mode shortcoming is that the System Discrimination degree is poor, and only can be used in known solution, if misoperation may appear in the solution during solution nonsystematic design to be measured.
Summary of the invention
A kind of optoelectronic switch with analog alarm function, it is used for the control external unit, it is characterized in that, comprises light emission module, Optical Receivers, signal processing unit, signal output unit, simulation test unit;
Described light emission module is launched light signal, and when not having determinand to exist, light signal can feed back in the Optical Receivers, exists if any determinand, will not have optical return signal in Optical Receivers;
Described Optical Receivers receiving optical signals also transfers described light signal to electric signal, described Optical Receivers is sent to described electric signal in the signal processing unit, and the electric signal after the described electric signal of described signal processing unit processes also will be processed is sent to simulation test unit;
Described simulation test unit comprises trigger pip sending module, change-over switch and phase inverter, when described trigger module sends a trigger pip, the switching of trigger pip control change-over switch, electric signal after the signal processing unit processes sends to signal output unit by phase inverter, described signal output unit output analog alarm signal; When trigger module does not send trigger pip, electric signal after signal processing unit will be processed directly sends to described signal output unit without phase inverter, and described signal output unit outputs control signals to external unit according to having or not of described electric signal and external unit is controlled.
Preferably, described signal processing unit comprises filtering, amplification, squelch to the processing of described electric signal.
Preferably, but described wavelength of optical signal opereating specification is 200nm-3000nm.
Preferably, the available light source of described light emission module comprises LED and Ne lamp.
Preferably, described Optical Receivers comprises photoresistance, optical diode, photoelectric crystal, CCD, CMOS.
Preferably, the light source of described light emission module is continuous light or pulsed light.
Preferably, be provided with a modulating signal device between described light emission module and the Optical Receivers, described modulating signal device is used for regulating the intensity of the signal that enters light emission module, and described modulating signal device is Photo Interrupter, frequency multiplier, grating or image intensifer.
Preferably, described signal output unit comprises a time Postponement module, and described time delay module is used for the residual time delay of simulation material.
Preferably, the described kind that adds trigger signals comprises actual button operation, push-botton operation, Magnetic Induction signal, voltage signal, current signal, light signal, electromagnetic induction signal, sound signal and speech sound signal.
Preferably, described change-over switch is SPDT or DPDT.
The present invention need not to change the state of determinand and carries out the output of multiple analog alerting signal; Simultaneously the present invention can simulate the time delay response of high viscosity fluid and high viscoelastic fluid.
Certainly, implement arbitrary product of the present invention and might not need to reach simultaneously above-described all advantages.
Description of drawings
The optoelectronic switch module diagram that Fig. 1 provides for prior art;
The photoswitc schematic diagram with analog alarm output that Fig. 2 provides for prior art;
The optoelectronic switch structural representation that Fig. 3 provides for the embodiment of the invention;
The simulation test unit structural representation that Fig. 4 provides for the embodiment of the invention;
Fig. 5 is embodiment of the invention analog alarm output schematic diagram.
Specific embodiment
The invention provides
A kind of optoelectronic switch with analog alarm function, it comprises light emission module 13, Optical Receivers 14, signal processing unit 15, signal output unit 16, simulation test unit 17;
The present invention is used for measuring determinand, test substance can be liquid, solid, solid-liquid mixing etc., its principle is: determinand has optical physics character, when the light source of launching when test substance and above-mentioned optoelectronic switch contacts, can cause different optical absorption (Absorption), reflection (Reflection), refraction (Refraction), total reflection (Total Reflection), thereby so that photoelectric switch is able to the difference of identification test substance state determinand is measured, according to the state of determinand equipment is controlled.
As described in Fig. 5 A, bucket groove material level does not touch optoelectronic switch, and output signal is H, shown in Fig. 5 B, when interpolation one adds trigger signals, output signal can be modeled as H, and L, HH, LL provide the rear end to carry out system testing; Otherwise shown in Fig. 5 C, bucket groove material level has touched optoelectronic switch, and output signal is L, shown in Fig. 5 D, when interpolation one adds trigger signals, output signal can be modeled as H, HH, L, LL provide the rear end to carry out system testing, and the neither state that must vary to actual material.
In this example, signal output unit also 16 comprises a time Postponement module, described time delay module is used for the residual time delay of simulation material, can simulate high viscosity fluid (Viscous Fluid), the time delay response of high viscoelastic fluid (High Elastomeric Fluid).
Concrete, signal processing unit 15 provided by the invention is done various modulation process with optical signal, comprises various known filtering (Filtering), amplifies (Amplifying), squelch (Noise Reduction) etc. but do not limit; Light emission module 13 is 200nm-3000nm with Optical Receivers 14 emissions with the wavelength of optical signal scope that receives, and can be UV light, visible light or IR light, and the present invention only illustrates, and light signal is not limited at this.Light emission module can be the wideband spectrum light sources such as known LED, Ne lamp, also can be the narrow frequency spectrum light sources such as Laser Diode, and the present invention only tool goes out light emission module several light sources commonly used, and the present invention is not limited in given example.
It is continuous light that light emission module of the present invention sends light source, also can adopt pulsed light, and Optical Receivers can be known photoresistance, optical diode, photoelectric crystal, the photo-sensitive cells such as CCD, CMOS.
Be provided with a modulating signal device between light emission module 13 and the Optical Receivers 14, described modulating signal device is used for regulating the intensity of the signal that enters light emission module, described modulating signal device can be known Pin Hole, Photo Interrupter, Etalon (frequency multiplier), Grating (grating), Amplifier (image intensifer) etc., even the light signal strength that enters like this light emission module a little less than, also can transmit after with optical signal amplification by the modulating signal device, improve reliability of the present invention.
The present invention is when needs output analog alarm signal, convenient flip flop equipment output trigger pip with adding, in order to control change-over switch, make electric signal see through reverser and switch height, reach the effect of simulation output, output analog alarm signal can comprise true alarm signal and analog alarm signal, can export four kinds of states, Low, High, Low Low, High High.Adding trigger signals and can be actual button operation, push-botton operation, Magnetic Induction signal, voltage signal, current signal, light signal, electromagnetic induction signal, sound signal, speech sound signal etc. triggers as signal; Adding trigger signals can be a kind of signal state of simulation, and this state is identical with real determinand state, also can be different.The change-over switch that the present embodiment provides can be known SPDT change-over switch or DPDT change-over switch.
The present invention is a kind of photoelectric switch that the analog alarm output function is provided, and it utilizes a kind of trigger signals that adds, and does not need the variation of actual determinand, can reach the switch signal switching that the simulation determinand changes; The present invention can simulate high viscosity fluid (Viscous Fluid) after also having added the function of time delay output, the time delay response of high viscoelastic fluid (High Elastomeric Fluid).
The above disclosed preferred embodiment of the present invention just is used for helping to set forth the present invention.Preferred embodiment does not have all details of detailed descriptionthe, does not limit this invention yet and only is described embodiment.Obviously, according to the content of this instructions, can make many modifications and variations.These embodiment are chosen and specifically described to this instructions, is in order to explain better principle of the present invention and practical application, thereby the technical field technician can understand and utilize the present invention well under making.The present invention only is subjected to the restriction of claims and four corner and equivalent.
Claims (10)
1. the optoelectronic switch with analog alarm function is characterized in that, comprises light emission module, Optical Receivers, signal processing unit, signal output unit, simulation test unit;
Described light emission module is launched light signal, and when not having determinand to exist, light signal can feed back in the Optical Receivers, exists if any determinand, will not have optical return signal in Optical Receivers;
Described Optical Receivers receiving optical signals also transfers described light signal to electric signal, described Optical Receivers is sent to described electric signal in the signal processing unit, and the electric signal after the described electric signal of described signal processing unit processes also will be processed is sent to simulation test unit;
Described simulation test unit comprises trigger pip sending module, change-over switch and phase inverter, when described trigger module sends a trigger pip, the switching of trigger pip control change-over switch, electric signal after the signal processing unit processes sends to signal output unit by phase inverter, described signal output unit output analog alarm signal; When trigger module does not send trigger pip, electric signal after signal processing unit will be processed directly sends to described signal output unit without phase inverter, and described signal output unit outputs control signals to external unit according to having or not of described electric signal and external unit is controlled.
2. the optoelectronic switch with analog alarm function as claimed in claim 1 is characterized in that, described signal processing unit comprises filtering, amplification, squelch to the processing of described electric signal.
3. the optoelectronic switch with analog alarm function as claimed in claim 1 is characterized in that, but described wavelength of optical signal opereating specification is 200nm-3000nm.
4. the optoelectronic switch with analog alarm function as claimed in claim 1 is characterized in that, the available light source of described light emission module comprises LED and Ne lamp.
5. the optoelectronic switch with analog alarm function as claimed in claim 1 is characterized in that, described Optical Receivers comprises photoresistance, optical diode, photoelectric crystal, CCD, CMOS.
6. the optoelectronic switch with analog alarm function as claimed in claim 1 is characterized in that, the light source of described light emission module is continuous light or pulsed light.
7. the optoelectronic switch with analog alarm function as claimed in claim 1, it is characterized in that, be provided with a modulating signal device between described light emission module and the Optical Receivers, described modulating signal device is used for regulating the intensity of the signal that enters light emission module, described modulating signal device is Photo Interrupter,, frequency multiplier, grating or image intensifer.
8. the optoelectronic switch with analog alarm function as claimed in claim 1 is characterized in that, described signal output unit comprises a time Postponement module, and described time delay module is used for the residual time delay of simulation material.
9. the optoelectronic switch with analog alarm function as claimed in claim 1, it is characterized in that, the described kind that adds trigger signals comprises actual button operation, push-botton operation, Magnetic Induction signal, voltage signal, current signal, light signal, electromagnetic induction signal, sound signal and speech sound signal.
10. the optoelectronic switch with analog alarm function as claimed in claim 1 is characterized in that, described change-over switch is SPDT or DPDT.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310281795.3A CN103353723B (en) | 2013-07-05 | 2013-07-05 | A kind of optoelectronic switch with analog alarm function |
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| CN201310281795.3A CN103353723B (en) | 2013-07-05 | 2013-07-05 | A kind of optoelectronic switch with analog alarm function |
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| CN103353723A true CN103353723A (en) | 2013-10-16 |
| CN103353723B CN103353723B (en) | 2015-12-02 |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4354180A (en) * | 1980-12-19 | 1982-10-12 | Genelco, Inc. | Electro-optical liquid level sensor |
| CN201656949U (en) * | 2009-12-24 | 2010-11-24 | 上海凡宜科技电子有限公司 | Photoelectric liquid level switch |
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2013
- 2013-07-05 CN CN201310281795.3A patent/CN103353723B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4354180A (en) * | 1980-12-19 | 1982-10-12 | Genelco, Inc. | Electro-optical liquid level sensor |
| CN201656949U (en) * | 2009-12-24 | 2010-11-24 | 上海凡宜科技电子有限公司 | Photoelectric liquid level switch |
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