CN210724791U - Carrier communication circuit and concentrator - Google Patents
Carrier communication circuit and concentrator Download PDFInfo
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- CN210724791U CN210724791U CN201922451668.9U CN201922451668U CN210724791U CN 210724791 U CN210724791 U CN 210724791U CN 201922451668 U CN201922451668 U CN 201922451668U CN 210724791 U CN210724791 U CN 210724791U
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Abstract
The utility model provides a carrier communication circuit and concentrator belongs to concentrator technical field. The carrier communication circuit includes: the system comprises a carrier transmitting module, a terminal module and a carrier receiving module; the terminal module comprises a first resistor, a first capacitor and a second resistor; one end of the first resistor is respectively connected with the first output end of the carrier transmitting module and the first input end of the carrier receiving module; the other end of the first resistor is connected with one end of a first capacitor, and the other end of the first capacitor is connected with one end of a second resistor; the other end of the second resistor is respectively connected with the second output end of the carrier transmitting module and the second input end of the carrier receiving module. A concentrator comprises the carrier communication circuit. The utility model discloses can improve the transport voltage to improve the communication success rate of carrier wave.
Description
Technical Field
The utility model relates to a concentrator technical field particularly, relates to a carrier communication circuit and concentrator.
Background
The Concentrator (Concentrator) is a central management device and a control device of a remote centralized meter reading system, and is responsible for regularly reading terminal data, transmitting commands of the system, communicating data, managing a network, recording events, transversely transmitting data and the like. The power supply scheme of the concentrator is a switching power supply, and the switching power supply has the advantages of small size, light weight (the size and the weight of the switching power supply are only 20-30% of those of a linear power supply), high efficiency (generally 60-70% and the linear power supply is only 30-40%), strong self anti-interference performance, wide output voltage range, modularization and the like.
Conducted interference refers to the phenomenon of the behavior of coupling (harmonic interference) a signal on one electrical network to another electrical network through a conductive medium.
At present, the most effective method for solving the conducted interference of the switching power supply concentrator is to add a safety capacitor to a terminal circuit, but the increase of the safety capacitor can reduce the transmitting power and the receiving sensitivity of a carrier, so that the communication success rate of the carrier is reduced.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a carrier communication circuit and concentrator can improve the transportation voltage of concentrator circuit to improve the communication success rate of carrier wave.
The embodiment of the utility model is realized like this:
the utility model discloses an aspect provides a carrier communication circuit, include: the system comprises a carrier transmitting module, a terminal module and a carrier receiving module; the terminal module comprises a first resistor, a first capacitor and a second resistor; one end of the first resistor is respectively connected with the first output end of the carrier transmitting module and the first input end of the carrier receiving module; the other end of the first resistor is connected with one end of a first capacitor, and the other end of the first capacitor is connected with one end of a second resistor; the other end of the second resistor is respectively connected with the second output end of the carrier transmitting module and the second input end of the carrier receiving module.
Optionally, the first resistor and the first capacitor include: the multi-path first resistor and the first capacitor are connected in parallel.
Optionally, the first capacitor is a safety capacitor.
Optionally, the first resistor is a thermistor.
Optionally, the first resistance is a power resistance.
Optionally, the carrier communication circuit further includes: a plurality of piezoresistors; one end of each piezoresistor is connected with the other end of the second resistor, and the other end of each piezoresistor is connected with one end of the corresponding first resistor.
Optionally, the carrier transmitting module includes a transmitting capacitor and a transmitting coil, a first output end of the transmitting coil is connected to one end of the transmitting capacitor, and the other end of the transmitting capacitor is connected to one end of the first resistor; and a second output end of the transmitting coil is connected with the other end of the second resistor.
Optionally, the carrier receiving module includes a receiving capacitor and a receiving coil, a first input end of the receiving coil is connected to one end of the receiving capacitor, and the other end of the receiving capacitor is connected to one end of the first resistor; and the second input end of the receiving coil is connected with the other end of the second resistor.
Optionally, the number of coil turns of the transmitting coil and the receiving coil are the same.
The embodiment of the utility model provides a further aspect provides a concentrator, include: a plurality of the carrier communication circuits of any of the above.
The utility model discloses beneficial effect includes:
the embodiment of the utility model provides a pair of carrier communication circuit increases the second resistance through the terminal module circuit at carrier communication circuit for RCR model is constituteed to first resistance, first electric capacity and second resistance, thereby improves the transportation voltage of this circuit, thereby improves the communication success rate of carrier wave.
The embodiment of the utility model provides a concentrator adopts the aforesaid carrier communication circuit, can improve the communication success rate.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 is a schematic diagram of a carrier communication circuit model according to an embodiment of the present invention;
fig. 2 is a schematic diagram of a circuit model of a carrier communication terminal according to an embodiment of the present invention.
Icon: 10-a carrier transmitting module; 11-a transmission capacitance; 12-a transmitting coil; 20-a terminal module; 21-a second resistance; 22-a first resistance; 23-a first capacitance; 24-a varistor; 30-a carrier receiving module; 31-a receiving capacitance; 32-receive coil.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
The terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is also to be understood that the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly unless otherwise specifically indicated and limited. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Fig. 1 is a schematic view of a carrier communication circuit model provided by the present invention, please refer to fig. 1, an embodiment of the present invention provides a carrier communication circuit, including: a carrier transmitting module 10, a terminal module 20 and a carrier receiving module 30; the terminal module comprises a first resistor 22, a first capacitor 23 and a second resistor 21; one end of the first resistor 22 is connected to the first output end of the carrier transmitting module 10 and the first input end of the carrier receiving module 30, respectively; the other end of the first resistor 22 is connected with one end of a first capacitor 23, and the other end of the first capacitor 23 is connected with one end of a second resistor 21; the other end of the second resistor 21 is connected to the second output terminal of the carrier transmitter module 10 and the second input terminal of the carrier receiver module 30, respectively.
It should be noted that, firstly, the carrier transmitting module 10 is configured to transmit a signal to the concentrator receiving circuit, and the carrier receiving module 30 is configured to receive a signal required by the concentrator circuit, where the carrier transmitting module 10 and the carrier receiving module 30 are respectively connected in parallel to two sides of the circuit of the terminal module 20.
Secondly, the carrier communication circuit adds the second resistor 21 to the terminal module 20 circuit, so that the first resistor 22, the first capacitor 23 and the second resistor 21 form an RCR circuit model, and illustratively, the amplitude of the transmission signal of the terminal module 20 is VoThe amplitude of the received signal of the terminal module 20 is ViWherein, for example, L1And L2Can be 200 muh, the ratio of the number of turns of the transmitting coil to the number of turns of the receiving coil is 1:1, the impedance is 60K when the carrier signal frequency is 3M, and for simplicity of calculation, it can be considered as an open circuit:
Vi＝Vo(ZR1+ZC2+ZR2)/(ZR1+ZC2+ZR2+ZC1)
v can be obtained by calculationi＝0.85V0。
Compared with a circuit model in the prior art, the method comprises the following steps:
Vi＝Vo(ZR1+ZC2)/(ZR1+ZC2+ZC1)
can be obtained by calculationVi＝0.76V0。
Wherein Z isR1Is the impedance of the first resistor 22, ZR2Is the impedance of the second resistor 21, ZC1Is the capacitive reactance of the transmitting capacitor 11, ZC2Is the capacitive reactance of the first capacitor 23.
As can be seen from the above, by adding the second resistor 21 to the circuit of the termination module 20, the transmission voltage in the carrier communication circuit can be increased, thereby increasing the success rate of carrier communication.
The embodiment of the utility model provides an among the carrier communication circuit, through increasing second resistance 21 in the circuit at carrier communication circuit's terminal module 20 for first resistance 22, first electric capacity 23 and second resistance 21 constitute the RCR circuit model, thereby improve the transportation voltage of this circuit, thereby improve the communication success rate of carrier wave.
Optionally, the first resistor 22 and the first capacitor 23 include: a plurality of first resistors 22 and a first capacitor 23 connected in parallel.
It should be noted that the plurality of first resistors 22 and the first capacitors 23 connected in parallel can be understood as a circuit in which the plurality of first resistors 22 are connected in series with the first capacitors 23 in the above-mentioned circuit model of the RCR circuit of the terminal module 20, and as shown in fig. 2, the plurality of first resistors 22 are connected in series with the first capacitors 23 in the circuit model of the RCR circuit of the terminal module 20.
In this embodiment, the first capacitor 23 is a safety capacitor.
It should be noted that, because the concentrator in this embodiment includes the switching power supply, for safety, a safety capacitor is generally added at a power supply inlet, and the safety capacitor does not cause electric shock and does not endanger personal safety after the capacitor fails. The safety capacitor is usually used only for filtering in the anti-jamming circuit. The filter is used in a power supply filter, plays a role in power supply filtering, and respectively plays a role in filtering common-mode interference and differential-mode interference.
Optionally, in this embodiment, the first resistor 22 is a thermistor.
It should be noted that, because the circuit temperature of the concentrator with the switching power supply cannot be too high, and the concentrator is damaged due to too high temperature, it is necessary to set a resistor which is sensitive to temperature to protect the circuit, so as to protect the concentrator.
Optionally, the first resistor 22 is a power resistor.
That is, the first resistor 22 in this embodiment may also be a power resistor, which can protect the circuit.
In this embodiment, the carrier communication circuit further includes: a plurality of piezoresistors 24; one end of each varistor 24 is connected to the other end of the second resistor 21, and the other end of each varistor 24 is connected to one end of the corresponding first resistor 22.
It should be noted that, a voltage dependent resistor 24 is disposed in each RCR model circuit, and the voltage dependent resistor 24 is a resistor device with nonlinear volt-ampere characteristics, and is mainly used for voltage clamping when the circuit is subjected to overvoltage, and absorbing excessive current to protect a sensitive device.
In this embodiment, the carrier transmitting module 10 includes a transmitting capacitor 11 and a transmitting coil 12, a first output end of the transmitting coil 12 is connected to one end of the transmitting capacitor 11, and the other end of the transmitting capacitor 11 is connected to one end of a first resistor 22; a second output of the transmitter coil 12 is connected to the other end of the second resistor 21.
The carrier receiving module 30 includes a receiving capacitor 31 and a receiving coil 32, a first input end of the receiving coil 32 is connected to one end of the receiving capacitor 31, and the other end of the receiving capacitor 31 is connected to one end of the first resistor 22; a second input terminal of the receiving coil 32 is connected to the other end of the second resistor 21.
It should be noted that, the transmission of the signal in the carrier transmission module 10 is mainly completed by the transmission coil 12, and the reception of the signal in the carrier reception module 30 is mainly completed by the reception coil 32.
Optionally, the number of coil turns of the transmitting coil 12 and the receiving coil 32 are the same.
It should be noted that, the number of turns of the transmitting coil 12 and the receiving coil 32 are the same so as to make the received and transmitted voltage signals equal, the number of turns of the transmitting coil 12 and the receiving coil 32 may have other proportional forms, and a skilled person may design the ratio of the number of turns of the transmitting coil 12 and the receiving coil 32 according to specific needs.
The embodiment of the utility model provides a further aspect provides a concentrator, include: the concentrator of the carrier communication circuit can improve the success rate of carrier communication.
The concentrator in this embodiment belongs to the concentrator with the power switch, and in order to solve the problem of conducted interference in the concentrator, the concentrator with the power switch is provided with a safety capacitor, i.e., a first capacitor, in a circuit of the terminal module 20 to solve the problem of conducted interference, and simultaneously, the circuit is protected, and a thermistor, i.e., a second resistor 21, is added, so that the first resistor 22, the first capacitor 23, and the second resistor 21 form an RCR model circuit, thereby improving transmission voltage in the terminal module 20 and improving success rate of carrier communication.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A carrier communication circuit, comprising: the system comprises a carrier transmitting module, a terminal module and a carrier receiving module; the terminal module comprises a first resistor, a first capacitor and a second resistor;
one end of the first resistor is respectively connected with the first output end of the carrier transmitting module and the first input end of the carrier receiving module; the other end of the first resistor is connected with one end of the first capacitor, and the other end of the first capacitor is connected with one end of the second resistor; the other end of the second resistor is connected with the second output end of the carrier transmitting module and the second input end of the carrier receiving module respectively.
2. The carrier communication circuit as claimed in claim 1, wherein the first resistor and the first capacitor comprise: the multi-path first resistor and the first capacitor are connected in parallel.
3. The carrier communication circuit according to claim 1 or 2, wherein the first capacitor is a safety capacitor.
4. The carrier communication circuit according to claim 1 or 2, wherein the first resistor is a thermistor.
5. The carrier communication circuit as claimed in claim 1 or 2, wherein the first resistor is a power resistor.
6. The carrier communication circuit of claim 2, further comprising: a plurality of piezoresistors;
one end of each piezoresistor is connected with the other end of the second resistor, and the other end of each piezoresistor is connected with one corresponding end of the first resistor.
7. The carrier communication circuit according to claim 1, wherein the carrier transmission module includes a transmission capacitor and a transmission coil, a first output terminal of the transmission coil is connected to one terminal of the transmission capacitor, and the other terminal of the transmission capacitor is connected to one terminal of the first resistor; and the second output end of the transmitting coil is connected with the other end of the second resistor.
8. The carrier communication circuit according to claim 7, wherein the carrier receiving module includes a receiving capacitor and a receiving coil, a first input terminal of the receiving coil is connected to one terminal of the receiving capacitor, and the other terminal of the receiving capacitor is connected to one terminal of the first resistor; and the second input end of the receiving coil is connected with the other end of the second resistor.
9. The carrier communication circuit of claim 8, wherein the number of coil turns of the transmit coil and the receive coil are the same.
10. A concentrator, comprising a carrier communication circuit according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922451668.9U CN210724791U (en) | 2019-12-27 | 2019-12-27 | Carrier communication circuit and concentrator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922451668.9U CN210724791U (en) | 2019-12-27 | 2019-12-27 | Carrier communication circuit and concentrator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210724791U true CN210724791U (en) | 2020-06-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922451668.9U Active CN210724791U (en) | 2019-12-27 | 2019-12-27 | Carrier communication circuit and concentrator |
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| Country | Link |
|---|---|
| CN (1) | CN210724791U (en) |
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2019
- 2019-12-27 CN CN201922451668.9U patent/CN210724791U/en active Active
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