CN207601565U - A kind of identification circuit of control module peripheral circuit - Google Patents
A kind of identification circuit of control module peripheral circuit Download PDFInfo
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- CN207601565U CN207601565U CN201721655394.XU CN201721655394U CN207601565U CN 207601565 U CN207601565 U CN 207601565U CN 201721655394 U CN201721655394 U CN 201721655394U CN 207601565 U CN207601565 U CN 207601565U
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Abstract
The utility model proposes a kind of identification circuit of control module peripheral circuit, including input end of analog signal mouth, A/D conversion circuits, decoding circuit and main control unit；The input end of analog signal mouth is connected to receive the corresponding analog signal of peripheral circuit type with the output terminal of peripheral circuit sampling resistor；The A/D conversion circuits are connected the analog signal being converted into digital signal with the input end of analog signal mouth；The decoding circuit is connected the digital signal translating into the signal with particular meaning with the A/D conversion circuits；The main control unit is connected to receive the signal with particular meaning so as to pick out corresponding peripheral circuit type with the decoding circuit.The utility model only needs a signal input part pin to can be realized the identification to a variety of peripheral circuit types, simple in structure, the manufacture cost that is easily installed, greatly improves the precision of control module identification peripheral circuit and reduce control module.
Description
Technical field
The utility model is related to peripheral circuit identification technique fields, are specifically related to a kind of distinguishing for control module peripheral circuit
Know circuit.
Background technology
With the development of industrial control technology, various controllers obtain extensive popularization and promotion, and are gradually applied to not
Same field.Existing industrial equipment or system are equipped with to realize terminal control and the control module that function is concentrated.It is different
Controller be based on a unified kernel control module, be equipped with different peripheral circuits to realize the control to different objects
System.By taking electric machine controller as an example：The type of different its controller of motor is also same not to the utmost, these controllers pass through core
Control module is identified and is controlled.It is control module research staff that control module how to be made, which to accurately identify different peripheral circuits,
One important topic.The method of existing identification peripheral circuit is that control module is different types of by different digital signal identification
Peripheral circuit.2 digital signal input end pins can identify the peripheral circuit of 4 types, and 3 pins can identify 8 types
The peripheral circuit of type, n pin can identify 2nThe peripheral circuit of type.This method energy when peripheral circuit types is less
Identification peripheral circuit well, but multiple digital signal input end pins are just needed when peripheral circuit type is more, this just makes
Into signal input part pin complexity and it is difficult to install the problem of.The manufacture cost of control module greatly depends on number of pins simultaneously
Amount and encapsulation, more its of digital signal input end number of pins is manufactured into originally bigger.
Utility model content
The purpose of the utility model is to overcome the deficiencies of the prior art, propose that one kind is simple in structure, are easily installed, cost
The identification circuit of relatively low control module peripheral circuit only needs a signal input part pin to can be realized to a variety of peripheral circuits
The identification of type.
Technical solution is used by the utility model solves its technical problem：
A kind of identification circuit of control module peripheral circuit, including：One input end of analog signal mouth, an A/D conversion circuits,
One decoding circuit and a main control unit；The input end of analog signal mouth is connected with the output terminal of the sampling resistor of peripheral circuit
To receive the corresponding analog signal of peripheral circuit type；The A/D conversion circuits are connected with the input end of analog signal mouth
The analog signal is converted into digital signal；The decoding circuit is connected with the A/D conversion circuits with by the number
Word signal translates into the signal with particular meaning；The main control unit is connected to have described in reception with the decoding circuit
The signal of particular meaning is so as to pick out corresponding peripheral circuit type.
Preferably, the A/D conversion circuits, decoding circuit and main control unit are integrated in inside control module.
Preferably, described sampling resistor one end is connected with peripheral circuit positive pole, other end ground connection.
Preferably, analog input signal range of the peripheral circuit according to the A/D conversion circuits, the A/D conversion circuits
Resolution ratio digit and own type, the sampling resistor is controlled to export corresponding voltage analog signal.
Compared with prior art, the utility model has the advantages that：
The utility model solve control module peripheral circuit type it is more when, using digital signal identify peripheral circuit class
Type needs multiple digital signal input end pins, the problem of so as to cause pin configuration complicated.The utility model only needs a letter
Number input terminal pin can pick out peripheral circuit type, simple in structure, be easily installed, greatly improve control module knowledge
The precision of other peripheral circuit, and the manufacture cost of control module is reduced, it is suitble to promote the use of.
The utility model is described in further detail with reference to the accompanying drawings and embodiments, but a kind of control of the utility model
The identification circuit of molding block peripheral circuit is not limited to embodiment.
Description of the drawings
Fig. 1 is the identification circuit schematic diagram of the control module peripheral circuit of the utility model.
Reference numeral：1st, input end of analog signal mouth, 2, A/D conversion circuits, 3, decoding circuit, 4, main control unit, 5, adopt
Sample resistance.
Specific embodiment
In order to make the technical solution of the utility model and advantage clearer, below in conjunction with the attached drawing pair of the utility model
Technical solution in embodiment is further described in more detail.Described embodiment is the implementation of the utility model part
Example, instead of all the embodiments.The embodiments described below with reference to the accompanying drawings are exemplary, it is intended to for explaining this reality
With novel, and it is not intended that limitation to the utility model.Based on the embodiment in the utility model, ordinary skill
Personnel's all other embodiments obtained without making creative work belong to the protection model of the utility model
It encloses.
A kind of identification circuit of control module peripheral circuit, including：One input end of analog signal mouth 1, an A/D conversion circuits
2nd, a decoding circuit 3 and a main control unit 4；The output terminal of the input end of analog signal mouth 1 and the sampling resistor 5 of peripheral circuit
It is connected to receive the corresponding analog signal of peripheral circuit type；The A/D conversion circuits 2 and the input end of analog signal mouth
1 is connected the analog signal being converted into digital signal；The decoding circuit 3 be connected with the A/D conversion circuits 2 with
The digital signal is translated into the signal with particular meaning；The main control unit 4 is connected to connect with the decoding circuit 3
The signal with particular meaning is received so as to pick out corresponding peripheral circuit type.
Further, the A/D conversion circuits 2, decoding circuit 3 and main control unit 4 are integrated in inside control module.
Further, described 5 one end of sampling resistor is connected with peripheral circuit positive pole, other end ground connection.
A kind of discrimination method of control module peripheral circuit, including：
Peripheral circuit corresponding types are converted into analog signal, and the analog signal is sent out by the sampling resistor of peripheral circuit
It send to the input end of analog signal mouth 1 of control module；
The input end of analog signal mouth 1 receives the analog signal and passes through the A/D conversion circuits 2 inside control module
Digital signal is converted to, and the digital signal is sent to the decoding circuit 3 of control module；
The decoding circuit 3 receives the digital signal, and the digital signal is translated into the signal with particular meaning,
And the signal with particular meaning is sent to main control unit 4；
The main control unit 4 receives the signal with particular meaning, and according to the signal with particular meaning
Corresponding peripheral circuit type is picked out, completes the identification work of peripheral circuit.
Further, peripheral circuit converts electricity according to the analog input signal ranges of the A/D conversion circuits 2, the A/D
The resolution ratio digit and own type on road 2 control the sampling resistor 5 to export corresponding voltage analog signal.
The utility model in the examples below using the peripheral circuit of 16 types, control module operating voltage as 0-5V
For the voltage A/D converter of 4 is used.
In the present embodiment, for the voltage analog-digital converter of one 4, if analog input range of signal is 0-5V,
The signal so exported has 0000,0001,0010,0011,0100,0101,0110,0111,1000,1001,1010,1011,
1100th, 1101,1110,1111, totally 16 kinds of codings, represent input voltage signal in 0V-0.3125V, 0.3126V- respectively
0.625V,...........4.6876V-5V.Each coding correspondence is as shown in table 1 below.
Table 1
When peripheral circuit exports the analog voltage signal in the range of a 0-5V by sampling resistor, by the voltage signal
The signal input part 1 of control module is input to, control module receives the voltage signal, is converted by internal A/D conversion circuits 2
For tetrad encoded signal, according to the corresponding outer net circuit types of different digital signal that table 2 is arranged, decoding circuit 3 is right
For binary coded signal into row decoding, the type through decoding conversion to corresponding peripheral circuit is conveyed to main control unit 4, you can completes
Identification work to peripheral circuit.
Table 2
Above-described embodiment is only used for further illustrating a kind of identification circuit of control module peripheral circuit of the utility model,
But the utility model is not limited to embodiment, every to appoint according to the technical essence of the utility model to what following embodiment was made
What simple modification, equivalent change and modification, each falls in the protection domain of technical solutions of the utility model.
Claims (5)
1. a kind of identification circuit of control module peripheral circuit, which is characterized in that including：One input end of analog signal mouth (1), one
A/D conversion circuits (2), a decoding circuit (3) and a main control unit (4)；The input end of analog signal mouth (1) and peripheral circuit
The output terminal of sampling resistor (5) be connected to receive the corresponding analog signal of peripheral circuit type；The A/D conversion circuits
(2) it is connected the analog signal being converted into digital signal with the input end of analog signal mouth (1)；The decoding circuit
(3) it is connected the digital signal translating into the signal with particular meaning with the A/D conversion circuits (2)；The master
Control unit (4) is connected corresponding so as to pick out to receive the signal with particular meaning with the decoding circuit (3)
Peripheral circuit type.
2. the identification circuit of control module peripheral circuit according to claim 1, which is characterized in that the A/D conversions electricity
Road (2), decoding circuit (3) and main control unit (4) are integrated in inside control module.
3. the identification circuit of control module peripheral circuit according to claim 1, which is characterized in that the analog signal is
Voltage analog signal.
4. the identification circuit of control module peripheral circuit according to claim 1, which is characterized in that the sampling resistor
(5) one end is connected with peripheral circuit positive pole, other end ground connection.
5. the identification circuit of control module peripheral circuit according to claim 1, which is characterized in that peripheral circuit is according to institute
The analog input signal range of A/D conversion circuits (2), the resolution ratio digit and own type of the A/D conversion circuits (2) are stated,
The sampling resistor (5) is controlled to export corresponding voltage analog signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721655394.XU CN207601565U (en) | 2017-12-01 | 2017-12-01 | A kind of identification circuit of control module peripheral circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721655394.XU CN207601565U (en) | 2017-12-01 | 2017-12-01 | A kind of identification circuit of control module peripheral circuit |
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| Publication Number | Publication Date |
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| CN207601565U true CN207601565U (en) | 2018-07-10 |
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| CN201721655394.XU Active CN207601565U (en) | 2017-12-01 | 2017-12-01 | A kind of identification circuit of control module peripheral circuit |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107957698A (en) * | 2017-12-01 | 2018-04-24 | 华侨大学 | A kind of identification circuit and method of control module peripheral circuit |
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2017
- 2017-12-01 CN CN201721655394.XU patent/CN207601565U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107957698A (en) * | 2017-12-01 | 2018-04-24 | 华侨大学 | A kind of identification circuit and method of control module peripheral circuit |
| CN107957698B (en) * | 2017-12-01 | 2024-07-09 | 华侨大学 | Identification circuit and method for peripheral circuit of control module |
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