CN201752389U - Multi-channel infrared signal processing circuit of automatic dust collector - Google Patents
Multi-channel infrared signal processing circuit of automatic dust collector Download PDFInfo
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- CN201752389U CN201752389U CN2010201416717U CN201020141671U CN201752389U CN 201752389 U CN201752389 U CN 201752389U CN 2010201416717 U CN2010201416717 U CN 2010201416717U CN 201020141671 U CN201020141671 U CN 201020141671U CN 201752389 U CN201752389 U CN 201752389U
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Abstract
The utility model discloses a multi-channel infrared signal processing circuit of an automatic dust collector, which comprises a single chip microcomputer, a transmitting channel choosing circuit, a signal transmitting array, a signal receiving array, a receiving channel choosing circuit and a signal processing circuit. The single chip microcomputer can actuate data acquisition algorithm and generate alternating current signals through software algorithm, the alternating current signals are respectively outputted to multiple groups of infrared transmitting channels of the signal transmitting array through the transmitting channel choosing circuit, and the infrared transmitting channels mainly comprise triodes, infrared transmitting pipes and current limit resistors. The signal transmitting array comprises at least one infrared receiving pipe and can convert infrared light signals to electric signals, and the electric signals are connected with an analog channel of the receiving channel choosing circuit. The receiving channel choosing circuit sends multi-channel electric signals to the signal processing circuit, the signal processing circuit comprises a two-stage amplifier filter circuit, an integral circuit and a comparator circuit, and the comparator circuit is connected with a port of the single chip microcomputer and further comprises a reference voltage generator. The transmitting channel choosing circuit can be provided with at least one first analog multi-channel switch, and the receiving channel choosing circuit can be provided with a second analog multi-channel switch. The multi-channel infrared signal processing circuit uses a method of detecting infrared reflection energy strength to measure obstacle distance, and can greatly reduce circuit devices after implementing the multi-channel infrared signal processing circuit, thereby reducing cost, and being reliable and stable in operation.
Description
Technical field
Belong to sensor technology and household electrical appliance technical field.
Background technology
Automatic cleaner adopts the rechargeable battery of high power capacity as energy source, is independently to move, automatic dust absorption, ground, automated cleaning room.In order to protect dust catcher self, do not destroy home environment simultaneously, automatic cleaner must have the detection of obstacles function.
At present, exist dual mode to carry out detection of obstacles: ultrasonic measuring distance technology and infrared distance measurement technology.Ultrasonic ranging is to calculate distance by measuring the propagation time of ultrasonic wave between barrier and detection probe.It mainly is that infrared energy by detection of reflected is returned calculates distance that infrared detection has.It is fast that infrared detection technology has reaction speed, do not have harm, cheap characteristics, and be used widely.But because dust catcher all needs to be provided with detection probe in the scope of half circumference, so the circuit structure complexity, device is various, is unfavorable for reducing cost.
Summary of the invention
The present invention adopts the method that detects the infrared external reflection energy intensity to measure obstacle distance, and simple in structure, cheap, dependable performance by the well-designed circuit devcie that reduced, reduces cost.
The technical scheme that the present invention takes:
The multichannel infrared signal treatment circuit of automatic cleaner comprises the single-chip microcomputer 1 that can carry out the data acquisition algorithm, and circuit is selected on the emission road, the signal emission array, the signal receiving array receives the road and selects circuit, signal processing circuit, described single-chip microcomputer 1 produces AC signal 2 by software algorithm;
Circuit is selected on described emission road, comprise the resistance R 0 that is connected with described AC signal 2, first analog multichannel switch 3 that is connected with described resistance R 0, described first analog multichannel switch 3 connects the control signal of described single-chip microcomputer 1, and described AC signal 2 is exported to described signal emission array;
Described signal emission array, comprise at least one group of infrared emission circuit 4, described infrared emission circuit 4 comprises the triode Q0 that base stage is connected with the analog channel of described first analog multichannel switch 3, the grounded emitter of described triode Q0, resistance R 1 is connected base stage and the emitter stage of described triode Q0, the colelctor electrode of described triode Q0 connects resistance R 9, and described resistance R 9 other ends connect power supply VCC;
Described signal receiving array comprises at least one infrared receiving tube, the plus earth of described infrared receiving tube, and negative electrode connects the analog channel of described first analog multichannel switch 3, can receive infrared signal;
Circuit is selected on described reception road, comprise second analog multichannel switch 5 that is connected with described signal receiving array, described second analog multichannel switch 5 connects the control signal of described single-chip microcomputer 1, the analog signal of described signal receiving array is transported to the common port of described second analog multichannel switch 5, and the common port of described second analog multichannel switch 5 is connected with the resistance R 12 of a termination power VCC;
Described signal processing circuit, comprise the two-stage amplification filtering circuit 6 that is connected with the common port of described second analog multichannel switch 5, the integrating circuit 7 that is connected with described two-stage amplification filtering circuit 6, and the comparator circuit 8 that is connected with described integrating circuit 7, the output of described comparator circuit 8 connects the port of described single-chip microcomputer 1, and described signal processing circuit also comprises reference voltage generator 9.
Circuit is selected on described emission road, and at least one first analog multichannel switch 3 can be set.
Circuit is selected on described reception road, and at least one second analog multichannel switch 5 can be set.
Implementing good effect of the present utility model is to adopt the method that detects the infrared external reflection energy intensity to measure obstacle distance, and circuit structure is simple, and detection speed is fast, and dependable performance by the well-designed circuit devcie that reduced, reduces cost.
Description of drawings
Fig. 1 is that circuit theory diagrams are selected on the emission road of automatic cleaner;
Fig. 2 is the signal transmission circuit schematic diagram of automatic cleaner;
Fig. 3 is the signal receiving circuit schematic diagram of automatic cleaner;
Fig. 4 is that circuit theory diagrams are selected on the reception road of automatic cleaner;
Fig. 5 is the signal processing circuit schematic diagram of automatic cleaner.
The specific embodiment
With reference to Fig. 1-5, the multichannel infrared signal treatment circuit of automatic cleaner comprises the single-chip microcomputer 1 that can carry out the data acquisition algorithm, and circuit is selected on the emission road, the signal emission array, and the signal receiving array receives the road and selects circuit, signal processing circuit.
Described single-chip microcomputer 1 produces AC signal 2 by software algorithm.
Circuit is selected on described emission road, comprise the resistance R 0 that is connected with described AC signal 2, first analog multichannel switch 3 that is connected with described resistance R 0, described first analog multichannel switch 3 connects channel selecting signal A0, A1, A2 and the enable signal SEN of described single-chip microcomputer 1.When enable signal SEN is low level, change the numerical value of channel selecting signal A0, A1, A2, AC signal 2 can be flowed to respectively analog channel X0, X1 ..., X7.
Described signal emission array, comprise at least one group of infrared emission circuit 4, described infrared emission circuit 4 comprises the triode Q0 that base stage is connected with the analog channel of described first analog multichannel switch 3, the grounded emitter of described triode Q0, resistance R 1 is connected base stage and the emitter stage of described triode Q0, the colelctor electrode of described triode Q0 connects resistance R 9, and described resistance R 9 other ends connect power supply VCC.Because all infrared emission circuit are worked constantly in difference, so a shared current-limiting resistance can reduce electronic device like this.
Described signal receiving array comprises at least one infrared receiving tube, the plus earth of described infrared receiving tube, and negative electrode connects described reception road and selects circuit, can receive infrared signal.Because all infrared receiving tubes are worked constantly in difference, so all do not connect sampling resistor,, public sampling resistor selects in the circuit but being placed on the described road of reception, can reduce electronic device like this.
Circuit is selected on described reception road, comprise second analog multichannel switch 5, the infrared receiving tube negative electrode of described signal receiving array be connected to second analog multichannel switch 5 analog channel X0, X1 ..., X7, described second analog multichannel switch 5 connects channel selecting signal A0, A1, A2 and the enable signal SEN of single-chip microcomputers 1.When enable signal SEN is low level, change the numerical value of channel selecting signal A0, A1, A2, can with analog channel X0, X1 ..., signal IR0, the IR1 of X7 ...., IR7 is delivered to the common port of second analog multichannel switch 5.The common port of second analog multichannel switch 5 is connected with the resistance R 12 of a termination power VCC.
Described signal processing circuit, comprise the two-stage amplification filtering circuit 6 that is connected with the common port of described second analog multichannel switch 5, the integrating circuit 7 that is connected with described two-stage amplification filtering circuit 6, and the comparator circuit 8 that is connected with described integrating circuit 7, the output of described comparator circuit 8 connects the port of described single-chip microcomputer 1, also comprises reference voltage generator 9.
Reference voltage generator 9 comprises that 11 couples of power supply VCC of resistance R 10 and resistance R carry out dividing potential drop, and the voltage of acquisition connects the in-phase end of amplifier 13, and the end of oppisite phase of amplifier 12 connects output, constitutes voltage follower, output reference voltage VREF.
Two-stage amplification filtering circuit 6 comprises that the signal of the common port output of second analog multichannel switch 5 connects capacitor C 1, and capacitor C 1 other end is connected to by amplifier 10, resistance R 13, R14, the anti-phase amplification filtering circuit that R15 and capacitor C 2 are formed; The output of amplifier 10 is connected to by amplifier 11 by capacitor C 3, resistance R 16, R17, the anti-phase amplification filtering circuit that R18 and capacitor C 4 are formed.
Circuit is selected on described emission road, and at least one first analog multichannel switch 3 can be set.Circuit is selected on described reception road, and at least one second analog multichannel switch 5 can be set.Can increase the quantity of infrared emission and receive path like this, improve the coverage of infrared detection.
Claims (3)
1. the multichannel infrared signal treatment circuit of automatic cleaner, comprise the single-chip microcomputer (1) that to carry out the data acquisition algorithm, circuit is selected, signal emission array, signal receiving array in the emission road, receive the road and select circuit, signal processing circuit is characterized in that: circuit is selected on described emission road, comprises resistance R 0, first analog multichannel switch (3) that is connected with described resistance R 0, described first analog multichannel switch (3) connects the control signal of described single-chip microcomputer (1);
Described signal emission array, comprise at least one group of infrared emission circuit (4), described infrared emission circuit (4) comprises the triode Q0 that base stage is connected with the analog channel of described first analog multichannel switch (3), the grounded emitter of described triode Q0, resistance R 1 is connected base stage and the emitter stage of described triode Q0, the colelctor electrode of described triode Q0 connects resistance R 9, and described resistance R 9 other ends connect power supply VCC;
Described signal receiving array comprises at least one infrared receiving tube, the plus earth of described infrared receiving tube, and negative electrode connects the analog channel of described first analog multichannel switch (3), can receive infrared signal;
Circuit is selected on described reception road, comprise second analog multichannel switch (5) that is connected with described signal receiving array, described second analog multichannel switch (5) connects the control signal of described single-chip microcomputer (1), the analog signal of described signal receiving array is transported to the common port of described second analog multichannel switch (5), and the common port of described second analog multichannel switch (5) is connected with the resistance R 12 of a termination power VCC;
Described signal processing circuit, comprise the two-stage amplification filtering circuit (6) that is connected with the common port of described second analog multichannel switch (5), the integrating circuit (7) that is connected with described two-stage amplification filtering circuit (6), and the comparator circuit (8) that is connected with described integrating circuit (7), the output of described comparator circuit (8) connects the port of described single-chip microcomputer (1), and described signal processing circuit also comprises reference voltage generator (9).
2. the multichannel infrared signal treatment circuit of automatic cleaner according to claim 1, it is characterized in that: circuit is selected on described emission road, and at least one first analog multichannel switch (3) can be set.
3. the multichannel infrared signal treatment circuit of automatic cleaner according to claim 1, it is characterized in that: circuit is selected on described reception road, and at least one second analog multichannel switch (5) can be set.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201416717U CN201752389U (en) | 2010-02-27 | 2010-02-27 | Multi-channel infrared signal processing circuit of automatic dust collector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201416717U CN201752389U (en) | 2010-02-27 | 2010-02-27 | Multi-channel infrared signal processing circuit of automatic dust collector |
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| Publication Number | Publication Date |
|---|---|
| CN201752389U true CN201752389U (en) | 2011-03-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201416717U Expired - Fee Related CN201752389U (en) | 2010-02-27 | 2010-02-27 | Multi-channel infrared signal processing circuit of automatic dust collector |
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| Country | Link |
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| CN (1) | CN201752389U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017215581A1 (en) * | 2016-06-12 | 2017-12-21 | 苏州宝时得电动工具有限公司 | Dust collector, and dust collecting system and method for controlling self-starting of dust collection of dust collector |
-
2010
- 2010-02-27 CN CN2010201416717U patent/CN201752389U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017215581A1 (en) * | 2016-06-12 | 2017-12-21 | 苏州宝时得电动工具有限公司 | Dust collector, and dust collecting system and method for controlling self-starting of dust collection of dust collector |
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| Date | Code | Title | Description |
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| 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: 20110302 Termination date: 20120227 |