CN201811754U - Non-contact object probe signal processing device - Google Patents
Non-contact object probe signal processing device Download PDFInfo
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- CN201811754U CN201811754U CN2010205287043U CN201020528704U CN201811754U CN 201811754 U CN201811754 U CN 201811754U CN 2010205287043 U CN2010205287043 U CN 2010205287043U CN 201020528704 U CN201020528704 U CN 201020528704U CN 201811754 U CN201811754 U CN 201811754U
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Abstract
The utility model relates to a signal processing device, in particular to a non-contact object probe signal processing device, which can overcome the problems that the traditional measurement has measurement errors due to the limit of light and sight angles. The non-contact object probe signal processing device is an automatic electronic processing device, and comprises a central processing unit, a power unit, a transmitting unit, a receiving unit, an output unit and a key input unit. The utility model outputs a count pulse signal according to the intensity of the reflection light of a counter, and the signal processing device takes a micro-controller (MCU) with lower power consumption as the control center. Combined with the digital signal processing technology, the utility model realizes the high-sensitivity detection to an object to be measured with low cost, and has higher reliability and antijamming capability. The utility model solves the problem that the traditional measurement has measurement errors due to the limit of light and sight angles.
Description
Technical field
The utility model relates to a kind of signal processing apparatus, specifically is meant a kind of contactless object detection signal processing apparatus.
Background technology
When the table tool that contains the mechanical counter device is calibrated, need a kind of device of winning the confidence its counting is accurately surveyed.With the gas meter is example, and the counter of gas meter adopts counting gear more, and the accuracy of traditional test gas meter is quantitatively to allow certain gas by gas meter, checks then whether the reading of gas meter is consistent with the amount of passing through gas.But so the test light during with reading, angle of sight line when reading table numerical value has very big relation, often causes the inaccurate of measurement numerical value.
Summary of the invention
Cause the bigger problem of measuring error for overcoming the restriction that traditional measurement is subjected to light, sight angle, the utility model provides a kind of contactless object detector signal processing apparatus.
The technical solution adopted in the utility model is: contactless object detector signal processing apparatus, this device are an electronics automatic processing device, and it comprises:
---central processor unit, described central processing unit are chip MSP430F2012, and this chip comprises power supply port Vcc, grounding ports Vss, I/O mouth p1.1-p1.7 and p2.6-p2.7, reseting port Rst;
---power supply unit, this unit adopts chip LM7805 output+5V voltage and HT7133 output+3.3V voltage;
---transmitter unit, this unit contains light emitting diode;
---receiving element, this unit comprises photodiode;
---output unit, this unit comprises the demonstration light emitting diode;
---key-press input unit, this unit comprise two buttons;
It is characterized in that: the light emitting diode in the transmitter unit adopts the diode that emits white light, its minus earth, and its anodal first current-limiting resistance that passes through links to each other with the I/O mouth P1.1 of central processing unit;
The negative pole of the photodiode in the receiving element links to each other with+5V voltage, anodally links to each other with the I/O mouth P1.0 of central processing unit and passes through divider resistance ground connection;
Its minus earth of demonstration light emitting diode in the output unit, anodal second current-limiting resistance that passes through links to each other with the I/O mouth P1.7 of central processing unit;
One end of two buttons in the key-press input unit links to each other other end ground connection by the 3rd, the 4th current-limiting resistance with I/O mouth P2.6, the P2.7 of central processing unit respectively.
Described contactless object detector signal processing apparatus comprises the working mode selection switch, this switch is a two-way switch, the switch ends stationary contact links to each other with power supply port Vcc, the grounding ports Vss of central processing unit respectively, and middle moving contact links to each other with the I/O mouth P1.1 of central processing unit.
Described output unit comprises a NPN triode that plays on-off action, the grounded emitter of triode, and its base stage links to each other with the I/O mouth P1.7 of central processing unit by the 5th current-limiting resistance, and its collector links to each other with+5V voltage through the 6th current-limiting resistance.
The beneficial effects of the utility model: this device utilizes the catoptrical strong and weak output counting pulse signal of counter wheel, signal processing apparatus serves as the control core with low-power consumption microcontroller (MCU), the combined digital signal treatment technology, realized high-sensitivity detection with low cost, and had higher reliability and antijamming capability testee.Thereby having solved traditional measurement is subjected to the restriction of light, sight angle to cause the bigger problem of measuring error.
Description of drawings
Accompanying drawing is the concrete control circuit figure of this device.
Embodiment
Below in conjunction with drawings and Examples the utility model is described further.
As shown in drawings, the core of this device is a central processor unit, this central processing unit is chip MSP430F2012, this chip comprises power supply port Vcc, grounding ports Vss, I/O mouth p1.1-p1.7 and p2.6-p2.7, reseting port Rst, power supply employing+3.3V power supply, this power supply is supplied with by the chip HT7133 output of power supply unit.
Power supply unit, as shown in the figure, the input end of chip LM7805 is imported by external voltage, and use on its output terminal output+5V power voltage supply road and as the input voltage of HT7133, HT7133 output+3.3V voltage uses for central processing unit.
Light emitting diode in the transmitter unit adopts the diode D3 that emits white light, its minus earth, and its anodal first current-limiting resistance R1 that passes through links to each other with the I/O mouth P1.1 of central processing unit.
The negative pole of photodiode D1 in the receiving element links to each other with+5V voltage, anodally links to each other with the I/O mouth P1.0 of central processing unit and passes through divider resistance R5 ground connection.
Its minus earth of demonstration light emitting diode D2 in the output unit, the anodal second current-limiting resistance R6 that passes through links to each other with the I/O mouth P1.7 of central processing unit.
The end of two button S1, S2 in the key-press input unit links to each other other end ground connection by the 3rd, the 4th current-limiting resistance R8, R7 with I/O mouth P2.6, the P2.7 of central processing unit respectively.
Concrete principle of work is: a reflector plate is installed on tested counter, one reflector plate for example is installed on " 0 " of minimum scale sign indicating number, the engaging means power supply, this moment, central processing unit MSP430F2012 started working, the diode D3 that emits white light of the bright transmitter unit of electricity, if this moment, light was aimed at reflector plate, the resistance of the photodiode D1 of receiving element changes at this moment, because photodiode D1 connects with divider resistance R5 and+5V and ground between, partial pressure value on the divider resistance R5 will produce a variation at this moment, this level changes the I/O mouth P1.0 that delivers to central processing unit, carry out the A/D conversion through central processing unit MSP430F2012 inside, compare with the standard value of its inner setting, when reaching standard value, the P1.7 of central processing unit MSP430F2012 sends a high level and lights demonstration light emitting diode D2.In the actual detected process, because counting gear is in continuous rotation, least count gear revolution moves a week, the P1.7 of central processing unit MSP430F2012 just sends a high level and lights and once show light emitting diode D2, therefore along with the P1.7 mouth of the continuous rotation center processor MSP430F2012 of counting gear just can be sent a series of count pulse.
Because in the actual measurement process, the light power that the power of ambient light can make photodiode D1 accept also can be different, cause the judgement of the P1.0 mouth change in voltage Different Effects central processing unit of central processing unit MSP430F2012, therefore increase by two and adjust button S1, S2, the standard value size of setting in the adjustment central processing unit by button S1, S2.
Because in measuring process, the P1.7 mouth of central processing unit MSP430F2012 just can be sent a series of count pulse, for count pulse is sent in the counting assembly of other operating voltage, in the output unit of device, increased the NPN triode Q1 of an on-off action, be used for voltage transitions, the grounded emitter of triode, its base stage link to each other with the I/O mouth P1.7 of central processing unit by the 5th current-limiting resistance R4, and its collector links to each other with+5V voltage through the 6th current-limiting resistance R2.
For using this device flexibly, this device also is provided with working mode selection K switch W1, as shown in the figure, when the armature contact of selecting K switch W1 and earthing contact closure, the diode D3 that emits white light in the transmitter unit is in always and extinguishes state, and this moment, device was in passive duty, if when the irradiation of other illuminating source is arranged this moment, the photodiode D1 of receiving element still can produce change in resistance in the device, and device can be worked.
When the armature contact of selecting K switch W1 and the Vcc closing of contact, the device duty that has the initiative, the diode D3 that emits white light in the transmitter unit is in illuminating state always.
Claims (3)
1. contactless object detector signal processing apparatus, this device are an electronics automatic processing device, and it comprises:
---central processor unit, described central processing unit are chip MSP430F2012, and this chip comprises power supply port Vcc, grounding ports Vss, I/O mouth p1.1-p1.7 and p2.6-p2.7, reseting port Rst;
---power supply unit, this unit adopts chip LM7805 output+5V voltage and HT7133 output+3.3V voltage;
---transmitter unit, this unit contains light emitting diode;
---receiving element, this unit comprises photodiode;
---output unit, this unit comprises the demonstration light emitting diode;
---key-press input unit, this unit comprise two buttons;
It is characterized in that: the light emitting diode in the transmitter unit adopts the diode that emits white light, its minus earth, and its anodal first current-limiting resistance that passes through links to each other with the I/O mouth P1.1 of central processing unit;
The negative pole of the photodiode in the receiving element links to each other with+5V voltage, anodally links to each other with the I/O mouth P1.0 of central processing unit and passes through divider resistance ground connection;
Its minus earth of demonstration light emitting diode in the output unit, anodal second current-limiting resistance that passes through links to each other with the I/O mouth P1.7 of central processing unit;
One end of two buttons in the key-press input unit links to each other other end ground connection by the 3rd, the 4th current-limiting resistance with I/O mouth P2.6, the P2.7 of central processing unit respectively.
2. described contactless object detector signal processing apparatus according to claim 1, it is characterized in that: this device comprises the working mode selection switch, this switch is a two-way switch, the switch ends stationary contact links to each other with power supply port Vcc, the grounding ports Vss of central processing unit respectively, and middle moving contact links to each other with the I/O mouth P1.1 of central processing unit.
3. described contactless object detector signal processing apparatus according to claim 1, it is characterized in that: described output unit comprises a NPN triode that plays on-off action, the grounded emitter of triode, its base stage links to each other with the I/O mouth P1.7 of central processing unit by the 5th current-limiting resistance, and its collector links to each other with+5V voltage through the 6th current-limiting resistance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205287043U CN201811754U (en) | 2010-09-09 | 2010-09-09 | Non-contact object probe signal processing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205287043U CN201811754U (en) | 2010-09-09 | 2010-09-09 | Non-contact object probe signal processing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201811754U true CN201811754U (en) | 2011-04-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205287043U Expired - Lifetime CN201811754U (en) | 2010-09-09 | 2010-09-09 | Non-contact object probe signal processing device |
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| Country | Link |
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| CN (1) | CN201811754U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102607662A (en) * | 2012-03-16 | 2012-07-25 | 张学亮 | Laser counting method and laser counting system of wheel type metering instrument |
-
2010
- 2010-09-09 CN CN2010205287043U patent/CN201811754U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102607662A (en) * | 2012-03-16 | 2012-07-25 | 张学亮 | Laser counting method and laser counting system of wheel type metering instrument |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110427 |