CN206863545U - A kind of nonpolarity conversion equipment of communication bus - Google Patents
A kind of nonpolarity conversion equipment of communication bus Download PDFInfo
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- CN206863545U CN206863545U CN201720794334.XU CN201720794334U CN206863545U CN 206863545 U CN206863545 U CN 206863545U CN 201720794334 U CN201720794334 U CN 201720794334U CN 206863545 U CN206863545 U CN 206863545U
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Abstract
The utility model provides a kind of nonpolarity conversion equipment of communication bus, include main station controller, slave station MCU, communication bus, slave station communication interface, it is characterized in also including dpdt relay, the input of the slave station communication interface is connected by control relay circuit with the output end of the dpdt relay, the input of the dpdt relay is connected with the output end of the communication bus, the utility model technology realizes the nonpolarity application of all polarized communication buses by adding common dpdt relay this component.
Description
Technical field
The utility model belongs to field bus node device field, and in particular to a kind of nonpolarity converting means of communication bus
Put.
Background technology
Common local communication polarized bus, such as CAN, RS485 etc., polarity is consistent to be required to two order wires,
Can not be reversed, but during site operation wiring, the situation of reverse polarity connection happens occasionally, and causes to be unable to normal communication, it is necessary to expend big
Amount time and manpower are searched reversed node and corrected again.The patent document of application number 200510037095.5 discloses one kind
CAN non-polarity node device, including CAN controller and CAN drivers, described CAN drivers drive for nonpolarity CAN
Dynamic device, including nonpolarity receiving circuit, nonpolarity transtation mission circuit and two polarized CAN drivers, described two have pole
The low level bus end of property CAN drivers, the anti-phase connection of high level bus end, the receiving terminal of two polarized CAN drivers lead to
Nonpolarity receiving circuit is crossed to connect with the receiving terminal of CAN controller, the transmitting terminal of CAN controller by nonpolarity transtation mission circuit and
The transmitting terminal connection of two polarized CAN drivers, its advantage are to access bus by nonpolarity driver, and utilization is electrodeless
Property driver low level bus end, high level bus end can arbitrarily change access bus order, realize and facilitate bus to show
Field cable wiring manufacture and the effect of debugging；The patent document of application number 201220086354.9 discloses a kind of nonpolarity 485 core
Piece, circuit is detected to detect A, B polarity of 485 chips by differential voltage, 485 chips are realized by identifying poles switch
Electrodeless sex work.Above-mentioned patented technology realizes nonpolarity effect for CAN and 485 bus features respectively, but it is applied
Field is limited；In general polarity adjustment circuit, such as the rectifier circuit that 4 diodes conspire to create, although can accomplish that polarity is adaptive
Should, but because of electronic component self-characteristic, change the characteristics such as the impedance of two lines bus.
Utility model content
For overcome the deficiencies in the prior art, the utility model provides a kind of nonpolarity conversion equipment of communication bus, specifically
Technical scheme is as follows：
A kind of nonpolarity conversion equipment of communication bus, connect comprising main station controller, slave station MCU, communication bus, slave station communication
Mouth, in addition to dpdt relay, control relay circuit, the input of the slave station communication interface pass through the relay
Control circuit is connected with the output end of the dpdt relay, the input of the dpdt relay and the communication
The output end connection of bus.
The implementation method of communication bus is nonpolarity conversion equipment, comprises the following steps：
S1, dpdt relay is accessed between slave station communication interface and communication bus, make it according to communication
The positive and negative electrode of bus connects as normal-closed end；
S2, main frame, which says the word, requires that all nodes upload the information for including this node ID；
S3, if this node connection is correct, receive upload information normal communication after Host Command；
S4, if this node wiring error, Host Command is can not receive, slave station MCU passes through under the control of main station controller
The effect of electromagnet, by the double-point double-throw switch while tuning opposite direction；
Repeat step S2-S4, until main frame receives communication normal information.
Compared with prior art, the utility model passes through MCU by adding a dpdt relay before chip interface
Control relay controls double-pole closing direction to realize, on the premise of former line impedance is not changed, realizes that the polarity of circuit is adjusted
It is whole；The utility model is controlled, master-slave communication contact mechanism technology by adding dpdt relay by MCU, it is possible to achieve
The nonpolarity application of all polarized double bus communication systems；The utility model technology has a wide range of application, cost is low, can be significantly
Improve efficiency of construction.
Brief description of the drawings
In order to illustrate more clearly of the utility model embodiment technical scheme, below by the sign to being previously mentioned in embodiment
Parameter is showed with accompanying drawing, it should be apparent that, drawings discussed below is only some embodiments of the utility model.
Fig. 1 is the utility model embodiment two-wire system communicating terminal control principle drawing；
Fig. 2 is the utility model embodiment two-wire system communication structure schematic diagram;
Fig. 3 is the utility model embodiment interiors of products conspectus.
Embodiment
The utility model is described in further detail with reference to embodiment, following examples are to the utility model
Explanation and the utility model is not limited to following examples.Involved material or equipment such as nothing are especially said in embodiment
It is bright, it is commercially available conventional material or equipment, involved detection method is then conventional method unless otherwise instructed.
Embodiment：A kind of nonpolarity conversion equipment of communication bus, comprising main station controller, slave station MCU, communication bus, from
Stand communication interface, in addition to dpdt relay, control relay circuit, the input of the slave station communication interface by after
Electrical apparatus control circuit is connected with the output end of the dpdt relay, the input of the dpdt relay with it is described
The output end connection of communication bus.
The implementation method of communication bus is nonpolarity conversion equipment, comprises the following steps：
S1, dpdt relay is accessed between slave station communication interface and communication bus, make it according to communication
The positive and negative electrode of bus connects as normal-closed end；
S2, main frame, which says the word, requires that all nodes upload the information for including this node ID；
S3, if this node connection is correct, receive upload information normal communication after Host Command；
S4, if this node wiring error, Host Command is can not receive, slave station MCU passes through under the control of main station controller
The effect of electromagnet, by the double-point double-throw switch while tuning opposite direction；
Repeat step S2-S4, until main frame receives communication normal information.
The utility model realizes the nonpolarity conversion of communication bus by adding a simple component.
Furthermore, it is necessary to explanation, the equivalent or simple change that all principles described according to the utility model patent design are done
Change, be included in the protection domain of the utility model patent, the utility model person of ordinary skill in the field can be right
Described specific embodiment is made various modifications or supplement or substituted using similar mode, without departing from this practicality
New structure surmounts scope defined in the claims, all should belong to the scope of protection of the utility model.
Claims (1)
1. a kind of nonpolarity conversion equipment of communication bus, connect comprising main station controller, slave station MCU, communication bus, slave station communication
Mouthful, it is characterised in that also lead to including dpdt relay, control relay circuit, the input of the slave station communication interface
The output end that the control relay circuit is crossed with the dpdt relay is connected, the input of the dpdt relay
End is connected with the output end of the communication bus.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720794334.XU CN206863545U (en) | 2017-07-03 | 2017-07-03 | A kind of nonpolarity conversion equipment of communication bus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720794334.XU CN206863545U (en) | 2017-07-03 | 2017-07-03 | A kind of nonpolarity conversion equipment of communication bus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206863545U true CN206863545U (en) | 2018-01-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201720794334.XU Active CN206863545U (en) | 2017-07-03 | 2017-07-03 | A kind of nonpolarity conversion equipment of communication bus |
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| Country | Link |
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| CN (1) | CN206863545U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107092218A (en) * | 2017-07-03 | 2017-08-25 | 河南联纵消防科技有限公司 | Communication bus is nonpolarity conversion equipment and its implementation |
-
2017
- 2017-07-03 CN CN201720794334.XU patent/CN206863545U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107092218A (en) * | 2017-07-03 | 2017-08-25 | 河南联纵消防科技有限公司 | Communication bus is nonpolarity conversion equipment and its implementation |
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