CN201765337U - Laser cold and hot metal detector - Google Patents
Laser cold and hot metal detector Download PDFInfo
- Publication number
- CN201765337U CN201765337U CN2010202446391U CN201020244639U CN201765337U CN 201765337 U CN201765337 U CN 201765337U CN 2010202446391 U CN2010202446391 U CN 2010202446391U CN 201020244639 U CN201020244639 U CN 201020244639U CN 201765337 U CN201765337 U CN 201765337U
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- Photometry And Measurement Of Optical Pulse Characteristics (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
Abstract
The utility model provides a laser cold and hot metal detector, which comprises a microcontroller, a power module, a modulating driver, a semiconductor laser module, a photosensitive receiver, a wave filter, an operational amplifier, a modulator-demodulator and an output module; the power module provides power for the microcontroller; one output end of the modulation driver is connected with one input end of the microcontroller, and the other output end of the modulation driver is connected with the input end of the semiconductor laser module; the photosensitive receiver is arranged on a laser emitting light path of the semiconductor laser module, and the output end of the photosensitive receiver is connected with the input end of the wave filter; the output end of the wave filter is connected with the input end of the operational amplifier; the output end of the operational amplifier is connected with the input end of the modulator-demodulator; the output end of the modulator-demodulator is connected with the other input end of the microcontroller; and the input end of the output module is connected with the other output end of the microcontroller. The detector has the advantages of strong anti-jamming ability and high responding speed and measuring accuracy, and can radically eliminate error actions.
Description
Technical field
The utility model relates to a kind of pick-up unit, relates in particular to the cold and hot metal detector of a kind of laser.
Background technology
Cold and hot metal detector is widely used in the scene of Industry Control production line, is a kind of existence that utilizes visible laser technology for detection object or gives the pinpoint instrument of object.
Cold and hot metal detector generally is made up of laser emitting module, laser pick-off processing module and feedback output module three parts.Laser emitting module comprises laser drive circuit and semiconductor laser module; The laser pick-off module comprises photosensitive receiving tube and signal output processing circuit; The feedback output module comprises output driving circuit and output display circuit.Cold and hot metal detector judges by laser emitting module continuous emission excimer laser signal whether the laser pick-off module receives the emitted laser signal, and whether output feedback signal comes the existence of inspected object or gives object localization thereby control.
Traditional laser detector adopts visible semiconductor laser to make light source, after the regulator modulation, send a branch of quasi-parallel red color visible laser, laser received by photosensitive tube through reflection or direct projection by photosensitive reception, signal is through switching value feedback control signal of output after the processing and amplifying.Because traditional laser detector just continues to handle to signal simply, it exists following defective: 1, poor anti jamming capability; 2, measuring accuracy is not high; 3, misoperation takes place easily.
The utility model content
The purpose of this utility model provides the laser that a kind of antijamming capability is strong, measuring accuracy is high, accuracy is good cold and hot metal detector for the defective that overcomes above prior art existence exactly.
The purpose of this utility model is achieved through the following technical solutions: the cold and hot metal detector of a kind of laser comprises microcontroller, power module, modulating driver, semiconductor laser module, photoreceiver, wave filter, operational amplifier, modulator-demodular unit and output module; Power module is electrically connected to microcontroller with microcontroller power supply is provided; An output terminal of modulating driver connects an input end of microcontroller, and another output terminal of modulating driver connects the input end of semiconductor laser module; Photoreceiver is arranged on the visible laser that is used for the receiving belt modulation signal on the Laser emission light path of semiconductor laser module, and the output terminal of photoreceiver connects the input end of wave filter; The output terminal concatenation operation amplifier input terminal of wave filter; The output terminal of operational amplifier connects the modulator-demodular unit input end; The output terminal of modulator-demodular unit connects another input end of microcontroller; The input end of output module connects another output terminal of microcontroller; Output module adopts LED to show output or the output of switch analog quantity.
Described microcontroller is selected the PIC16F71 or the PIC16C712 of microchip company for use.
Described modulator-demodular unit is selected LM567 for use.
Described semiconductor laser module is selected the Sigma laser module for use.
Described photoreceiver is selected PIN-07FSLR for use.
Described operational amplifier is selected LM6082 or LM6084 for use.
Be provided with analog signals acquisition module and A/D signal conversion module in the described microcontroller, microcontroller is handled judgement to the two-way input signal, determine whether to output module output shows signal or drive signal, after output module receives shows signal, adopt LED to show output; After output module receives drive signal, adopt the output of switch analog quantity.
The cold and hot metal detector of a kind of laser of the utility model has the advantage that antijamming capability is strong, response speed is fast, measuring accuracy is high owing to adopted above technical scheme; Be adapted at extremely rugged environment use down, and can thoroughly eliminate misoperation.
Description of drawings
Fig. 1 is the structured flowchart of the cold and hot metal detector of the utility model laser.
Embodiment
The utility model is described in further detail below in conjunction with drawings and the specific embodiments.
Referring to Fig. 1, the cold and hot metal detector of a kind of laser of the utility model comprises microcontroller 1, power module 2, modulating driver 3, semiconductor laser module 4, photoreceiver 5, wave filter 6, operational amplifier 7, modulator-demodular unit 8 and output module 9.Power module 2 is electrically connected to microcontroller with microcontroller 1 power supply is provided; An output terminal of modulating driver 3 connects an input end of microcontroller 1, and another output terminal of modulating driver 3 connects the input end of semiconductor laser module 4.Photoreceiver 5 is arranged on the visible infrared laser that is used for the receiving belt modulation signal on the Laser emission light path of semiconductor laser module 4, and the output terminal of photoreceiver 5 connects the input end of wave filter 6.The input end of the output terminal concatenation operation amplifier 7 of wave filter 6.The output terminal of operational amplifier 7 connects the input end of modulator-demodular unit 8, and the output terminal of modulator-demodular unit 8 connects another input end of microcontroller 1.The input end of output module 9 connects another output terminal of microcontroller 1, and output module adopts LED to show output or the output of switch analog quantity.
Above-mentioned microcontroller 1 is selected the PIC16F71 or the PIC16C712 of microchip company for use; Modulator-demodular unit is selected LM567 for use; Semiconductor laser module is selected the Sigma laser module for use; Photoreceiver is selected PIN-07FSLR for use; Operational amplifier is selected LM6082 or LM6084 for use.
Principle of work of the present utility model is, at first produce the modulating pulse wave of a mf band by modulating driver 3, send to semiconductor laser module 4, driving laser module 4 is launched the visible laser of a band modulation signal, this laser is directly received by photoreceiver 5 or returns to be received by photoreceiver 5 through direct reflection, photoreceiver 5 becomes the laser signal that receives into electric signal through opto-electronic conversion, because some factors of external environment condition and Laser emission receiver module self can produce the electric signal of some interference, so this electric signal need be eliminated these undesired signals through wave filter 6, through operational amplifier 7 electric signal is amplified subsequently, amplifying signal outputs to modulator-demodular unit 8; Signal is handled through the modulator-demodular unit frequency locking, and the modulation signal demodulation is transformed into level signal (low level is effective) input microcontroller 1; Microcontroller 1 is caught this level signal, and when the seizure result was low level, microcontroller 1 started the output function of output module 9, otherwise is failure to actuate; Another paths is that the pin 1 by modulator-demodular unit links to each other with microcontroller 1, the analog value of pin 1 output is directly proportional with the laser signal that receives, pin 1 output signal is carried out the analog signals collection and is carried out the A/D conversion of signals in microcontroller 1 inside, A/D conversion of signals analog value that obtains and the preset value that normally receives are compared, when being lower than the preset value that normally receives, the LED lamp of microcontroller 1 startup output module 9 is luminous, show that received signal is faint, so will according to circumstances cold and hot metal detector be done the corresponding adjustment of reception.1 pair of two-way input signal of microcontroller is handled judgement, confirms whether to export shows signal or drive signals to output module 9.After output module 9 receives shows signal or drive signal, adopt LED to show output or the output of switch analog quantity.
Embodiment 1
A kind of laser detector, adopt the PIC16F71 microcontroller, the LM567 modulator-demodular unit, operational amplifier adopts LM6084, semiconductor laser module adopts the SIGMA laser module, photoreceiver adopts PIN-07FSLR, and output module adopts LED to show output, transistor output and relay switching variable output.
The supply voltage of this device is 24VDC+20%, and the visible laser wavelength is 650nm, and laser power is 3mw, and spot size diameters is 0.1mm, and the luminous point deviation is 0.5mrad, adopts the reflective inspected object of band catoptron or gives object localization.Exist or object when also not putting in place (during holding state) at no object, the SIGMA laser module is launched modulated laser continuously, and the mirror reflection that is reflected is returned, photosensitive receiving tube PIN-07FSLR receives modulation signal, amplify through filtering, and then give microcontroller PIC16F71 through low level of output after the modulator-demodular unit LM567 demodulation process, this moment, microcontroller was judged as no object or object does not also put in place, did not have to show and drive and export; When object appears between laser detector and the catoptron, object has sheltered from the continuous modulated laser of SIGMA laser module emission, can't be transmitted on the catoptron, make photosensitive receiving tube PIN-07FSLR not receive the modulated laser signal, make this moment high level of detuner LM567 output give microcontroller PIC16F71, this moment, microcontroller was judged as that object exists or object puts in place, and corresponding driving LED shows, transistor output and relay output.
This pick-up unit response speed is fast, and the bearing accuracy height is low in energy consumption, and stability is high, is applicable to that rugged surroundings have the occasion of flame high temperature.
Claims (7)
1. the cold and hot metal detector of laser is characterized in that: comprise microcontroller, power module, modulating driver, semiconductor laser module, photoreceiver, wave filter, operational amplifier, modulator-demodular unit and output module; Power module is electrically connected to microcontroller with microcontroller power supply is provided; An output terminal of modulating driver connects an input end of microcontroller, and another output terminal of modulating driver connects the input end of semiconductor laser module; Photoreceiver is arranged on the visible laser that is used for the receiving belt modulation signal on the Laser emission light path of semiconductor laser module, and the output terminal of photoreceiver connects the input end of wave filter; The output terminal concatenation operation amplifier input terminal of wave filter; The output terminal of operational amplifier connects the modulator-demodular unit input end; The output terminal of modulator-demodular unit connects another input end of microcontroller; The input end of output module connects another output terminal of microcontroller; Output module adopts LED to show output or the output of switch analog quantity.
2. the cold and hot metal detector of laser as claimed in claim 1 is characterized in that: described microcontroller is selected the PIC16F71 or the PIC16C712 of microchip company for use.
3. the cold and hot metal detector of laser as claimed in claim 1 or 2, it is characterized in that: described modulator-demodular unit is selected LM567 for use.
4. the cold and hot metal detector of laser as claimed in claim 1 or 2, it is characterized in that: described semiconductor laser module is selected the Sigma laser module for use.
5. the cold and hot metal detector of laser as claimed in claim 1, it is characterized in that: described photoreceiver is selected PIN-07FSLR for use.
6. the cold and hot metal detector of laser as claimed in claim 1, it is characterized in that: described operational amplifier is selected LM6082 or LM6084 for use.
7. the cold and hot metal detector of laser as claimed in claim 1, it is characterized in that: be provided with analog signals acquisition module and A/D signal conversion module in the described microcontroller, microcontroller is handled judgement to the two-way input signal, determine whether to output module output shows signal or drive signal, after output module receives shows signal, adopt LED to show output; After output module receives drive signal, adopt the output of switch analog quantity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202446391U CN201765337U (en) | 2010-06-29 | 2010-06-29 | Laser cold and hot metal detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202446391U CN201765337U (en) | 2010-06-29 | 2010-06-29 | Laser cold and hot metal detector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201765337U true CN201765337U (en) | 2011-03-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202446391U Expired - Fee Related CN201765337U (en) | 2010-06-29 | 2010-06-29 | Laser cold and hot metal detector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201765337U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102313890A (en) * | 2010-06-29 | 2012-01-11 | 上海派恩科技有限公司 | Laser detector for hot and cold metal |
| CN103217216A (en) * | 2013-03-27 | 2013-07-24 | 启东文鑫电子有限公司 | Photoelectric detector circuit |
-
2010
- 2010-06-29 CN CN2010202446391U patent/CN201765337U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102313890A (en) * | 2010-06-29 | 2012-01-11 | 上海派恩科技有限公司 | Laser detector for hot and cold metal |
| CN103217216A (en) * | 2013-03-27 | 2013-07-24 | 启东文鑫电子有限公司 | Photoelectric detector circuit |
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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: 20110316 Termination date: 20130629 |