CN201469184U - Multiplex ultrasonic obstacle detection circuit of automatic suction cleaner - Google Patents
Multiplex ultrasonic obstacle detection circuit of automatic suction cleaner Download PDFInfo
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- CN201469184U CN201469184U CN2009203040594U CN200920304059U CN201469184U CN 201469184 U CN201469184 U CN 201469184U CN 2009203040594 U CN2009203040594 U CN 2009203040594U CN 200920304059 U CN200920304059 U CN 200920304059U CN 201469184 U CN201469184 U CN 201469184U
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Abstract
A multiplex ultrasonic obstacle detection circuit of automatic suction cleaner includes a singlechip capable of implementing data acquisition, an emission routing circuit, a signal radiation array, a signal receiving array, a receiving routing circuit, and a signal processing circuit. The singlechip generates alternating-current signal by software algorithm; the alternating-current signal is respectively output to a plurality of groups of ultrasonic emission probes of the signal radiation array through the emission routing circuit; the signal receiving array includes at least one ultrasonic pick-up probe which can covert the ultrasonic signal into electrical signal, and the electrical signal is connected to the analog channel of the receiving routing circuit; the receiving routing circuit sends the multiplex electrical signal to the signal processing circuit, the signal processing circuit includes two stages of magnification wave filter circuits, an integrator circuit and a comparator circuit, the output of the comparator circuit is connected to the terminal port of the singlechip, the signal processing circuit also includes a reference voltage generator. The emission routing circuit can be provided with at least one analog multiplex switch. The receiving routing circuit can be provided with at least one analog multiplex switch. The patent adopts a method for detecting the flying time of the ultrasonic to measure the obstacle distance, by adopting the patent, the circuit devices can be greatly reduced, the cost can be reduced, the detection accuracy can satisfy the requirements of the system, and the work is reliable and stable.
Description
Technical field
Belong to sensor technology and household electrical appliance technical field.
Background technology
Automatic cleaner is different from conventional cleaners fully, and the rechargeable battery that adopts high power capacity is independently to move as energy source, automatic dust absorption, the emerging household electrical appliances on 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.Infrared detection mainly is to calculate distance by the infrared energy that detection of reflected is returned; Ultrasonic ranging is to calculate distance by measuring the propagation time of ultrasonic wave between barrier and detection probe.It is fast that infrared detection technology has reaction speed, do not have harm, cheap characteristics, and still for the barrier of dark material, because infrared energy is absorbed in a large number, the reflective infrared light energy is very little, detects to tend to failure.And ultrasonic wave carry out detection of obstacles have many a bit, such as the influence that is not subjected to the barrier surface color, wide coverage can be provided with less probe in the scope of half circumference simultaneously.
Summary of the invention
The present invention adopts and detects hyperacoustic transition time method measurement obstacle distance, for automatic cleaner provides a kind of simple in structure, cheap, and dependable performance, the solution that is easy to realize.
The technical scheme that its technical problem that solves the utility model adopts is:
The multiplex ultrasonic detection of obstacles 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, with the analog multichannel switch 3 that described resistance R 0 is connected, described 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 comprises at least one ultrasonic wave transmitting probe, and the positive pole of described ultrasonic wave transmitting probe connects the analog channel of described analog multichannel switch 3, minus earth, the both positive and negative polarity of described ultrasonic wave transmitting probe resistance in parallel;
Described signal receiving array comprises at least one ultrasonic wave receiving transducer, the minus earth of described ultrasonic wave receiving transducer, and the analog channel of circuit is selected on the described reception of anodal connection road;
Circuit is selected on described reception road, comprise the analog multichannel switch 21 that is connected with described signal receiving array, described analog multichannel switch 21 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 analog multichannel switch 21, and the common port of described analog multichannel switch (21) is connected with the resistance R 9 of an end ground connection;
Described signal processing circuit, comprise the two-stage amplification filtering circuit 22 that is connected with the common port of described analog multichannel switch 21, the integrating circuit 23 that is connected with described two-stage amplification filtering circuit 22, and the comparator circuit 24 that is connected with described integrating circuit 23, the output of described comparator circuit 24 connects the port of described single-chip microcomputer 1, also comprises reference voltage generator 25.
Circuit is selected on described emission road, and at least one analog multichannel switch can be set.
Circuit is selected on described reception road, and at least one analog multichannel switch can be set.
Implementing good effect of the present utility model is to detect hyperacoustic transition time method to measure obstacle distance, and circuit structure is simple, reliable operation, and stable 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
Below in conjunction with accompanying drawing the utility model is further described.
With reference to Fig. 1-5, the multiplex ultrasonic detection of obstacles 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, comprises the resistance R 0 that is connected with described AC signal 2, and with the analog multichannel switch 3 that described resistance R 0 is connected, described 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 comprises at least one ultrasonic wave transmitting probe, the positive pole of described ultrasonic wave transmitting probe connect described analog multichannel switch 3 analog channel X0, X1 ... .X7, minus earth.With ultrasonic wave transmitting probe 4 is example, and resistance R 1 is connected in parallel on the both positive and negative polarity of ultrasonic wave transmitting probe 4, ultrasonic wave transmitting probe 4 minus earths, the anodal analog channel X0 that connects analog multichannel switch 3.
Described signal receiving array comprises at least one ultrasonic wave receiving transducer, the minus earth of described ultrasonic wave receiving transducer, and circuit is selected on the anodal described reception road that connects.With ultrasonic wave receiving transducer 13 is example, ultrasonic wave receiving transducer 13 minus earths, the anodal analog channel X0 that connects analog multichannel switch 21.
Circuit is selected on described reception road, comprises the analog multichannel switch 21 that is connected with described signal receiving array, and described analog multichannel switch 21 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, can with analog channel X0, X1 ... signal UR0, the UR1 of .X7 ... .UR7 is delivered to the common port of analog multichannel switch 21.The common port of described analog multichannel switch 21 is connected with the resistance R 9 of an end ground connection.
Described signal processing circuit, comprise the two-stage amplification filtering circuit 22 that is connected with the common port of described analog multichannel switch 21, the integrating circuit 23 that is connected with described two-stage amplification filtering circuit 22, and the comparator circuit 24 that is connected with described integrating circuit 23, the output of described comparator circuit 24 connects the port of described single-chip microcomputer 1, also comprises reference voltage generator 25.
Two-stage amplification filtering circuit 22 comprises that the signal SIGNAL of the common port output of analog multichannel switch 21 connects capacitor C 1, and capacitor C 1 other end is connected to by amplifier 26, resistance R 17, R18, the anti-phase amplification filtering circuit that R19 and capacitor C 2 are formed; The output of amplifier 26 is connected to by amplifier 27 by capacitor C 3, resistance R 20, R21, the anti-phase amplification filtering circuit that R22 and capacitor C 4 are formed.
Circuit is selected on described emission road, and at least one analog multichannel switch can be set.Circuit is selected on described reception road, and at least one analog multichannel switch can be set.Can increase the quantity of ultrasonic wave emission and receive path like this, improve the coverage of ultrasound examination.
Claims (3)
1. the multiplex ultrasonic detection of obstacles circuit of automatic cleaner, comprise the single-chip microcomputer (1) that to carry out the data acquisition algorithm, circuit is selected on the emission road, the signal emission array, the signal receiving array receives the road and selects circuit, signal processing circuit, it is characterized in that: 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), the analog multichannel switch (3) that is connected with described resistance R 0, described 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 ultrasonic wave transmitting probe, the positive pole of described ultrasonic wave transmitting probe connects the analog channel of described analog multichannel switch (3), minus earth, the both positive and negative polarity of described ultrasonic wave transmitting probe resistance in parallel;
Described signal receiving array comprises at least one ultrasonic wave receiving transducer, the minus earth of described ultrasonic wave receiving transducer, and circuit is selected on the anodal described reception road that connects;
Circuit is selected on described reception road, comprise the analog multichannel switch (21) that is connected with described signal receiving array, described analog multichannel switch (21) 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 analog multichannel switch (21), and the common port of described analog multichannel switch (21) is connected with the resistance R 9 of an end ground connection;
Described signal processing circuit, comprise the two-stage amplification filtering circuit (22) that is connected with the common port of described analog multichannel switch (21), the integrating circuit (23) that is connected with described two-stage amplification filtering circuit (22), and the comparator circuit (24) that is connected with described integrating circuit (23), the output of described comparator circuit (24) connects the port of described single-chip microcomputer (1), also comprises reference voltage generator (25).
2. the multiplex ultrasonic detection of obstacles circuit of automatic cleaner according to claim 1, it is characterized in that: circuit is selected on described emission road, and at least one analog multichannel switch can be set.
3. the multiplex ultrasonic detection of obstacles circuit of automatic cleaner according to claim 1, it is characterized in that: circuit is selected on described reception road, and at least one analog multichannel switch can be set.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009203040594U CN201469184U (en) | 2009-06-06 | 2009-06-06 | Multiplex ultrasonic obstacle detection circuit of automatic suction cleaner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009203040594U CN201469184U (en) | 2009-06-06 | 2009-06-06 | Multiplex ultrasonic obstacle detection circuit of automatic suction cleaner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201469184U true CN201469184U (en) | 2010-05-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009203040594U Expired - Fee Related CN201469184U (en) | 2009-06-06 | 2009-06-06 | Multiplex ultrasonic obstacle detection circuit of automatic suction cleaner |
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| CN (1) | CN201469184U (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 |
-
2009
- 2009-06-06 CN CN2009203040594U patent/CN201469184U/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: 20100519 Termination date: 20100606 |