CN106021138B - The identifying system and method for accessory, host, multiple accessory ID - Google Patents
The identifying system and method for accessory, host, multiple accessory ID Download PDFInfo
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- CN106021138B CN106021138B CN201610329051.8A CN201610329051A CN106021138B CN 106021138 B CN106021138 B CN 106021138B CN 201610329051 A CN201610329051 A CN 201610329051A CN 106021138 B CN106021138 B CN 106021138B
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- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
- G06F13/10—Program control for peripheral devices
- G06F13/102—Program control for peripheral devices where the programme performs an interfacing function, e.g. device driver
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Abstract
The present invention relates to the identifying system and method for a kind of accessory, host, multiple accessory ID, which includes: the first I/O port, for interrogation pulse transmitted by receiving host；Impulse generating unit, for generating feedback pulse, and feedback pulse is related with accessory ID to the interval time of interrogation pulse；Second I/O port, for sending feedback pulse to host.The host includes: transmission unit, for sending interrogation pulse to each accessory by its signal output end；Receiving unit, for receiving feedback pulse by its signal input part；Acquiring unit, for obtaining the interval time of feedback pulse and interrogation pulse；Query unit, for the one-to-one relationship of multiple interval times according to the pre-stored data and multiple accessory ID, accessory ID corresponding to the time of polling interval.The circuit of implementation technical solution of the present invention, accessory and host is simple, low in cost, moreover, realize the big space ID and multiple accessory in the case where few resource occupies while identifying.
Description
Technical field
The present invention relates to accessory identification field more particularly to a kind of accessory, host, the identifying system of multiple accessory ID and sides
Method.
Background technique
Accessory ID identification circuit generally requires design simple, low in cost.Currently, the prior art generallys use following two
The identification of method progress accessory ID:
1.ONEWIRE
ONEWIRE is a kind of single bus agreement of Maxim/Dallas company, U.S. exploitation.If it is desired that with this association
Calmly, accessory and host side will have the distinctive hardware cell of this agreement of special encoding and decoding, belong to peculiar bus；
2. parallel input port
Several input ports are first defined, ID are obtained by the logic variation coding of input port, ID quantity is exactly defining interface
The 2 of quantityn, for example input port A1, A2 are defined, according to logic coding, so that it may obtain A1A2={ 00,01,10,11 } this 4
Coding.
But identify accessory ID according to ONEWIRE bus, then special functional hardware is needed, design is more complicated, and at
This is also higher；Accessory ID is identified according to parallel input port, then can occupy more interface, and cannot identify multiple match simultaneously
Part ID, therefore it is unfavorable for the miniaturization and structure design of product.
Summary of the invention
The technical problem to be solved in the present invention is that in view of the above drawbacks of the prior art, provide a kind of accessory, host,
The circuit of the identifying system and method for multiple accessory ID, accessory and host is simple, low in cost, moreover, occupied in few resource
In the case of, it realizes the big space ID and multiple accessory while identifying.
The technical solution adopted by the present invention to solve the technical problems is: constructing a kind of accessory, comprising:
First I/O port, for interrogation pulse transmitted by receiving host；
Impulse generating unit, for generating feedback pulse, and the feedback pulse and the inquiry according to the interrogation pulse
Ask that the interval time of pulse is related to accessory ID；
Second I/O port, for sending feedback pulse to host.
Preferably, the impulse generating unit includes timer.
Preferably, the impulse generating unit includes the first multivibrator, the second multivibrator, first resistor, the
One capacitor, first diode, second resistance, the second capacitor and the second diode, wherein the negative side of first multivibrator
First I/O port is connected along triggering input terminal, positive edge triggers input terminal and connects supply voltage, and low level output end connects
The positive edge triggering input terminal of second multivibrator is connect, the negative edge-triggered input of second multivibrator connects
Ground, low level output end connect second I/O port, the directreset terminal of first multivibrator and described more than second
The directreset terminal of harmonic oscillator connects supply voltage respectively；First termination supply voltage of the first resistor, second end connect
The external resistance connecting pin of first multivibrator is connect, the first termination first multivibrator of the first capacitor
Outer capacitor connecting pin, the second end of the second termination first resistor, the anode connection described first of the first diode
The second end of capacitor, cathode connect supply voltage；First termination supply voltage of the second resistance, second end connect institute
State the external resistance connecting pin of the second multivibrator, the dispatch from foreign news agency of the first termination second multivibrator of second capacitor
Hold connecting pin, the second end of the second termination second resistance, the anode of second diode connects second capacitor
Second end, cathode connect supply voltage；
Moreover, the first resistor and the first capacitor are related to interval time corresponding to the accessory.
The present invention also constructs a kind of host, comprising:
Transmission unit, for sending interrogation pulse to each accessory by its signal output end；
Receiving unit, for receiving the feedback pulse that accessory is fed back by its signal input part；
Acquiring unit, for obtaining the feedback pulse and the inquiry according to the interrogation pulse and the feedback pulse
Ask the interval time of pulse；
Query unit is looked into for the one-to-one relationship of multiple interval times according to the pre-stored data and multiple accessory ID
Ask accessory ID corresponding to acquired interval time.
The present invention also constructs a kind of host, comprising:
Memory, for storing program instruction；
Processor, the program instruction for being stored according to the memory execute following steps:
Interrogation pulse is sent to each accessory by its signal output end；
The feedback pulse that accessory is fed back is received by its signal input part；
According to the interrogation pulse and the feedback pulse, when obtaining interval of the feedback pulse with the interrogation pulse
Between；
The one-to-one relationship of multiple interval times according to the pre-stored data and multiple accessory ID inquire acquired interval
Accessory ID corresponding to time.
The present invention also constructs the identifying system of multiple accessory ID a kind of, which is characterized in that including above-described host and more
A above-described accessory, moreover, the signal output end of host, signal input part are separately connected two I/O ports of each accessory.
The present invention also constructs the recognition methods of multiple accessory ID a kind of, the signal output end of host, signal input part respectively with
Two I/O ports of each accessory connect, comprising:
Host sends interrogation pulse to each accessory by its signal output end；
Host receives the feedback pulse that accessory is fed back by its signal input part；
Host obtains between the feedback pulse and the interrogation pulse according to the interrogation pulse and the feedback pulse
Every the time；
The one-to-one relationship of host multiple interval times according to the pre-stored data and multiple accessory ID is inquired acquired
Accessory ID corresponding to interval time.
The present invention also constructs the recognition methods of multiple accessory ID a kind of, and two I/O ports of accessory are exported with the signal of host respectively
End, signal input part connection, comprising:
Accessory passes through interrogation pulse transmitted by its first I/O port receiving host；
Accessory generates feedback pulse, and the interval time of the feedback pulse and the interrogation pulse according to the interrogation pulse
It is related to accessory ID；
Accessory sends feedback pulse to host by its second I/O port.
Implement technical solution of the present invention, first different accessories is arranged with different interval times, when host is matched to each
After part sends interrogation pulse, interval time of the different accessories according to corresponding to it generates a feedback pulse, and host is matched according to difference
The feedback pulse that part is returned obtains interval time corresponding to each accessory, to obtain accessory ID according to interval time.Cause
This, the circuit of the mode of ONEWIRE bus compared to the prior art, accessory and host is simple, low in cost；Compared with prior art
It is middle by the way of parallel input port, can realize the big space ID and multiple accessory in few resource while identify.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
It obtains other drawings based on these drawings.In attached drawing:
Fig. 1 is the building-block of logic of the identifying system embodiment one of multiple accessory ID of the present invention；
Fig. 2 is the building-block of logic of host embodiments one in Fig. 1；
Fig. 3 is the timing diagram of interrogation pulse and feedback pulse；
Fig. 4 is the building-block of logic of fitting embodiment one in Fig. 1；
Fig. 5 is the circuit diagram of impulse generating unit embodiment one in Fig. 4；
Fig. 6 is the simulated effect figure of the impulse generating unit of different accessories；
Fig. 7 is the building-block of logic of host embodiments two of the present invention；
Fig. 8 is the flow chart of the recognition methods embodiment one of multiple accessory ID of the present invention；
Fig. 9 is the flow chart of the recognition methods embodiment two of multiple accessory ID of the present invention.
Specific embodiment
Fig. 1 is the building-block of logic of the identifying system embodiment one of multiple accessory ID of the present invention, the multiple accessory ID of the embodiment
Identifying system include host 10 and multiple accessories 20,20 ' ..., 20 ", wherein signal output end (Xout), the signal of host 10
Input terminal (Xin) is separately connected each accessory 20,20 ' ..., 20 " two I/O ports.
Fig. 2 is the building-block of logic of host embodiments one in Fig. 1, and the host of the embodiment includes transmission unit 11, receives
Unit 12, acquiring unit 13 and query unit 14.Wherein: transmission unit 11 is used to send out by its signal output end to each accessory
Interrogation pulse is sent, for example, the interrogation pulse is a calibration pulse P (t0), it can be according to the MCU (not shown) of host to arteries and veins
The reliability of punching detection sets output；Receiving unit 12 is used to receive the feedback arteries and veins that accessory is fed back by its signal input part
Punching, wherein feedback pulse is related with accessory ID to the interval time of interrogation pulse, for example, the feedback pulse is P (t0+ Δ t)；
Acquiring unit 13 is used to the interval time of feedback pulse and interrogation pulse is obtained, for example, instead according to interrogation pulse and feedback pulse
Presenting pulse P, (interval time of t0+ Δ t) and interrogation pulse P (t0) are Δ t；Query unit 14 is for according to the pre-stored data more
The one-to-one relationship of a interval time and multiple accessory ID inquire accessory ID corresponding to acquired interval time.
In conjunction with Fig. 1-3, in host 10, transmission unit 11 by its signal output end (Xout) to each accessory 20,
20 ' ..., 20 " interrogation pulse is sent, receiving unit 12 receives each accessory 20,20 ' ..., 20 by its signal input part (Xin) "
The feedback pulse fed back, acquiring unit 13 according to interrogation pulse and each feedback pulse, obtain each feedback pulse respectively with
The interval time Δ t1 of interrogation pulse, Δ t2 ... Δ tn.Finally, the multiple interval times according to the pre-stored data of query unit 14
With the one-to-one relationship of multiple accessory ID, inquire acquired each interval time Δ t1, Δ t2 ... Δ tn respectively corresponding to
Accessory ID, therefore, detect Δ t size, be known that connection host which accessory be connected with.
Fig. 4 is the building-block of logic of fitting embodiment one in Fig. 1, and the accessory of the embodiment includes the first I/O port 21, pulse
Generate unit 22 and the second I/O port 23.Wherein, the first I/O port 21 is for interrogation pulse transmitted by receiving host；Pulse generates single
Member 22 for generating feedback pulse according to the interrogation pulse, and the interval time of the feedback pulse and the interrogation pulse with
Accessory ID is related；Second I/O port 23 is used to send feedback pulse to host.
Wherein, impulse generating unit 22 can be realized by various ways.In a specific example, if in accessory circuit
There is MCU, then impulse generating unit 22 can be timer, and the timer is built-in or is external in MCU, and is directly matched with GPIO to do
The I/O port of part, certainly, in other examples, impulse generating unit 22 can be realized by oscillator and peripheral circuit, below with
It is illustrated for the relatively low multivibrator of cost:
In conjunction with Fig. 5, the model 74HC123D of multivibrator U1, by two independent one-shot multivibrator groups
At, wherein the negative edge-triggered input (foot 1 of multivibrator U1) of the first multivibrator connects the first I/O port, just
Edge-triggered input (foot 2 of multivibrator U1) passes through resistance R250 connection supply voltage (VCC), directreset terminal
(foot 3 of multivibrator U1) connects supply voltage by resistance R249, and low level output end (foot 4 of multivibrator U1) connects
Connect positive edge triggering input terminal (foot 10 of multivibrator U1) of the second multivibrator, the negative side edge of the second multivibrator
Triggering input terminal (foot 9 of multivibrator U1) is grounded by resistance R251, the directreset terminal (foot of multivibrator U1
11) supply voltage is connect by resistance R247, low level output end (foot 12 of multivibrator U1) connects the second I/O port.Herein
It should be noted that in other embodiments, resistance R250, R251, R249, R247 can save one or more.
In addition, the first termination supply voltage of resistance R242, the external resistance that second end connects the first multivibrator connect
It connects end (foot 15 of multivibrator U1), the outer capacitor connecting pin (multi resonant of first the first multivibrator of termination of capacitor C327
The foot 14 of oscillator U1), the second end of the second terminating resistor R242, the second of the anode connection capacitor C327 of diode D2
End, cathode connect supply voltage.Moreover, the resistance value of resistance R242 and the capacitance of capacitor C327 determine corresponding to the accessory
Interval time length, that is, the value of resistance R242 and capacitor C327 is different in the impulse generating unit of different accessories.Resistance
The first termination supply voltage of R243, second end connect external resistance connecting pin (the multivibrator U1 of the second multivibrator
Foot 7), the outer capacitor connecting pin (foot 6 of multivibrator U1) of first the second multivibrator of termination of capacitor C328, the
The second end of two terminating resistor R243, the second end of the anode connection capacitor C328 of diode D1, cathode connect supply voltage.
The resistance value of resistance R243 and the capacitance of capacitor C328 determine the width of feedback pulse.
Table 1
Illustrate the working principle of the impulse generating unit of the embodiment below with reference to table 1:
Firstly, according to the menu of multivibrator, in the first multivibrator, in its directreset terminal (multi-resonant
Swing the foot 3 of device U1) and positive edge triggering input terminal (foot 2 of multivibrator U1) be high level when, when its negative edging trigger is defeated
Enter end (foot 1 of multivibrator U1) and detects that the failing edge of interrogation pulse comes temporarily, low level output end (multivibrator
The foot 4 of U1) it is jumped by high level as low level, one delay pulse of generation, and the pulsewidth of the delay pulse and resistance R242, capacitor
The value of C327 is related.It is obtained for example, the pulsewidth of delay pulse can be calculated by formula 1:
tW=K*REXT*CEXTFormula 1
Wherein, tWFor the pulsewidth (ns) of delay pulse, REXTFor the resistance value (k Ω) of resistance R242, CEXTFor capacitor C327's
Capacitance (pF), K are coefficient, generally, when supply voltage VCC is 5V, when K=0.45, supply voltage VCC are 2V, K=
0.55。
It is high level in its directreset terminal (foot 11 of multivibrator U1), and it is negative in the second multivibrator
When edge-triggered input (foot 9 of multivibrator U1) is low level, when its positive edge triggers input terminal (multivibrator U1
Foot 10) detect that the rising edge of delay pulse carrys out interim, low level output end (foot 12 of multivibrator U1) You Gao electricity
Flat jump is low level, generates a feedback pulse, and the pulsewidth of the feedback pulse is related to the value of resistance R243, capacitor C328,
Specific calculation can refer to formula 1.
In conjunction with Fig. 6, when three accessories connect host simultaneously, and to three accessory respectively arranged interval times are as follows:
Δ t1=7.5ms, Δ t2=4.7ms, Δ t3=2.6ms, the arteries and veins when the failing edge of interrogation pulse P reaches, in three accessories
The first multivibrator that punching generates unit generates delay pulse D1, D2, D3, and D1=7.5ms, D2=4.7ms, D3=respectively
2.6ms, correspondingly, the second multivibrator of the impulse generating unit in three accessories generate feedback arteries and veins as shown in the figure respectively
Rush F1, F2, F3.
Fig. 7 is the building-block of logic of host embodiments two of the present invention, and the host of the embodiment includes memory 15 and processing
Device 16.Wherein, memory 15 is for storing program instruction；Processor 16 is used for the program instruction stored according to the memory
Execute following steps:
Interrogation pulse is sent to each accessory by its signal output end；
The feedback pulse that accessory is fed back is received by its signal input part；
According to the interrogation pulse and the feedback pulse, when obtaining interval of the feedback pulse with the interrogation pulse
Between；
The one-to-one relationship of multiple interval times according to the pre-stored data and multiple accessory ID inquire acquired interval
Accessory ID corresponding to time.
Fig. 8 is the flow chart of the recognition methods embodiment one of multiple accessory ID of the present invention, is illustrated first, the signal of host
Output end, signal input part are connect with two I/O ports of each accessory respectively, the recognition methods packet of the multiple accessory ID of the embodiment
It includes:
S11. host sends interrogation pulse to each accessory by its signal output end；
S12. host receives the feedback pulse that accessory is fed back by its signal input part；
S13. host obtains the feedback pulse and the interrogation pulse according to the interrogation pulse and the feedback pulse
Interval time；
S14. the one-to-one relationship of host multiple interval times according to the pre-stored data and multiple accessory ID, inquiry are obtained
Accessory ID corresponding to the interval time taken.
Fig. 9 is the flow chart of the recognition methods embodiment two of multiple accessory ID of the present invention, is illustrated first, two of accessory
I/O port is connect with the signal output end of host, signal input part respectively, and the recognition methods of the multiple accessory ID of the embodiment includes:
S21. accessory passes through interrogation pulse transmitted by its first I/O port receiving host；
S22. accessory generates feedback pulse, and the interval of the feedback pulse and the interrogation pulse according to the interrogation pulse
Time is related to accessory ID；
S23. accessory sends feedback pulse to host by its second I/O port.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field
For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, made any bun
Change, equivalent replacement, improvement etc., should be included within scope of the presently claimed invention.
Claims (8)
1. a kind of accessory characterized by comprising
First I/O port, for interrogation pulse transmitted by receiving host；
Impulse generating unit, for generating feedback pulse, and the feedback pulse and the inquiry arteries and veins according to the interrogation pulse
The interval time of punching is related to accessory ID；
Second I/O port, for sending feedback pulse to host, so that host is obtained according to the interrogation pulse and the feedback pulse
Take the interval time of the feedback pulse Yu the interrogation pulse, and multiple interval times according to the pre-stored data and multiple accessories
The one-to-one relationship of ID inquires accessory ID corresponding to acquired interval time.
2. accessory according to claim 1, which is characterized in that the impulse generating unit includes timer.
3. accessory according to claim 1, which is characterized in that the impulse generating unit include the first multivibrator,
Second multivibrator, first resistor, first capacitor, first diode, second resistance, the second capacitor and the second diode,
In, the negative edge-triggered input of first multivibrator connects first I/O port, and positive edge triggers input terminal and connects
Supply voltage is connect, low level output end connects the positive edge triggering input terminal of second multivibrator, more than described second
The negative edging trigger input end grounding of harmonic oscillator, low level output end connect second I/O port, first multi-resonant
The directreset terminal of the directreset terminal and second multivibrator that swing device connects supply voltage respectively；The first resistor
First termination supply voltage, second end connect the external resistance connecting pin of first multivibrator, the first capacitor
The outer capacitor connecting pin of first termination first multivibrator, the second end of the second termination first resistor are described
The anode of first diode connects the second end of the first capacitor, and cathode connects supply voltage；The of the second resistance
One termination supply voltage, second end connect the external resistance connecting pin of second multivibrator, and the of second capacitor
The outer capacitor connecting pin of one termination second multivibrator, the second end of the second termination second resistance, described the
The anode of two diodes connects the second end of second capacitor, and cathode connects supply voltage；
Moreover, the first resistor and the first capacitor are related to interval time corresponding to the accessory.
4. a kind of host characterized by comprising
Transmission unit, for sending interrogation pulse to each accessory by its signal output end；
Receiving unit, for receiving the feedback pulse that accessory is fed back by its signal input part；
Acquiring unit, for obtaining the feedback pulse and the inquiry arteries and veins according to the interrogation pulse and the feedback pulse
The interval time of punching；
Query unit inquires institute for the one-to-one relationship of multiple interval times according to the pre-stored data and multiple accessory ID
Accessory ID corresponding to the interval time of acquisition.
5. a kind of host characterized by comprising
Memory, for storing program instruction；
Processor, the program instruction for being stored according to the memory execute following steps:
Interrogation pulse is sent to each accessory by its signal output end；
The feedback pulse that accessory is fed back is received by its signal input part；
According to the interrogation pulse and the feedback pulse, the interval time of the feedback pulse Yu the interrogation pulse is obtained；
The one-to-one relationship of multiple interval times according to the pre-stored data and multiple accessory ID inquire acquired interval time
Corresponding accessory ID.
6. a kind of identifying system of multiple accessory ID, which is characterized in that including host described in claim 4 or 5 and multiple rights
It is required that the described in any item accessories of 1-3, moreover, the signal output end of host, signal input part are separately connected the two of each accessory
A I/O port.
7. a kind of recognition methods of multiple accessory ID, the signal output end of host, signal input part two with each accessory respectively
I/O port connection characterized by comprising
Host sends interrogation pulse to each accessory by its signal output end；
Host receives the feedback pulse that accessory is fed back by its signal input part；
Host is according to the interrogation pulse and the feedback pulse, when obtaining interval of the feedback pulse with the interrogation pulse
Between；
The one-to-one relationship of host multiple interval times according to the pre-stored data and multiple accessory ID inquires acquired interval
Accessory ID corresponding to time.
8. a kind of recognition methods of multiple accessory ID, two I/O ports of accessory respectively with the signal output end of host, signal input part
Connection characterized by comprising
Accessory passes through interrogation pulse transmitted by its first I/O port receiving host；
Accessory generates feedback pulse, and the feedback pulse and the interval time of the interrogation pulse and this according to the interrogation pulse
Accessory ID is related；
Accessory sends feedback pulse to host by its second I/O port, so that host is according to the interrogation pulse and the feedback arteries and veins
Punching obtains the interval time of the feedback pulse and the interrogation pulse, and multiple interval times according to the pre-stored data with it is multiple
The one-to-one relationship of accessory ID inquires accessory ID corresponding to acquired interval time.
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| CN104933000A (en) * | 2014-03-20 | 2015-09-23 | 英飞凌科技股份有限公司 | Edge-based communication |
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| CN102841869B (en) * | 2012-07-03 | 2015-06-03 | 深圳市邦彦信息技术有限公司 | Multi-channel I2C controller based on FPGA |
| KR20150033188A (en) * | 2013-09-23 | 2015-04-01 | 삼성에스디아이 주식회사 | Battery system, method for controlling battery system and energy storage system including the same |
| CN103870782A (en) * | 2014-03-25 | 2014-06-18 | 天津理工大学 | Anti-collision method based on label confliction IDs |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102591269A (en) * | 2011-12-27 | 2012-07-18 | 珠海派诺科技股份有限公司 | Equipment recognizing method, as well as master equipment module and slave equipment module |
| CN104933000A (en) * | 2014-03-20 | 2015-09-23 | 英飞凌科技股份有限公司 | Edge-based communication |
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