CN206698237U - A kind of two-way wired digital communication equipment and grounding current monitoring system - Google Patents
A kind of two-way wired digital communication equipment and grounding current monitoring system Download PDFInfo
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- CN206698237U CN206698237U CN201720454917.8U CN201720454917U CN206698237U CN 206698237 U CN206698237 U CN 206698237U CN 201720454917 U CN201720454917 U CN 201720454917U CN 206698237 U CN206698237 U CN 206698237U
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Abstract
A kind of two-way wired digital communication equipment and grounding current monitoring system are the utility model is related to, its equipment includes the main frame and slave mutually communicated using cable；The main frame includes battery, constant current source power supply circuit, host computer side single-chip microcomputer, host computer side digital current signal transtation mission circuit and host computer side digital current signal receiving circuit；Slave include power circuit, from pusher side single-chip microcomputer, from pusher side digital current signal transtation mission circuit and from pusher side digital current signal receiving circuit；The input of power circuit is connected electrically in by cable in the output end of constant current source power supply circuit, host computer side digital current signal transtation mission circuit is connected electrically in from pusher side digital current signal receiving circuit by cable, is connected electrically in from pusher side digital current signal transtation mission circuit by cable in host computer side digital current signal receiving circuit.A kind of two-way wired digital communication equipment of the utility model is adapted to low-power consumption, the data double-way transmission of long range under the conditions of battery powered.
Description
Technical field
It the utility model is related to field of data transmission, and in particular to a kind of two-way wired digital communication equipment and earth current
Monitoring system.
Background technology
In fields such as Industry Control, monitoring, there are many data to need to be transmitted by cable.Carried out by medium of cable
The mode of data transfer has many kinds, such as RS485, RS232, CAN.These transmission technologys have each self application scene.Such as
RS232, it is adapted to nearly short-range Point-to-Point Data communication；RS485 is adapted to the remote multi-point communication of master-slave mode；CAN is adapted to more main
The remote multiple spot of machine.Wherein, the long range transmission technology that transmission range reaches more than 1000 meters is exactly RS485 and CAN.But
RS485 and CAN, power consumption are all bigger.
Referring initially to RS485, chip power-consumption first is bigger, such as：RS485, industry is than the more typical chip of low-power consumption 485
SP3485, it is non-loaded, in receive state when, consumption electric current is 2mA；Secondly, power consumption is big during communication, is passed when needing long range
, it is necessary to add build-out resistor on the both ends of cable when defeated, fail safe resistance, power consumption is added, in transmitting-receiving, needed
Want electric current to reach more than 40mA, although also, RS485 chips there is turn-off function, once RS485 chips enter shut-off shape
State, it can not just receive data；And in actual applications, data generally require real-time Transmission, and RS485 chips are in order to keep receiving energy
Power, it is impossible into off state.
CAN is seen again, although CAN chips have dormancy low-power consumption function, and when dormancy, remains in that reception shape
State, but as RS485, during actual use, when apart from it is long when, it is necessary to add build-out resistor, which adds work(
Consumption.
In practical application, some occasions are needed over long distances, the data volume very little of transmission, and the speed of transmission will not yet
Ask, but require battery powered, extremely low power consumption, to extend battery.Above two transmission technology, is unsuitable for battery
Long-range data transmission under condition of power supply.
Utility model content
Technical problem to be solved in the utility model is to provide a kind of two-way wired digital communication equipment and earth current
Monitoring system, it is adapted to low-power consumption, the data double-way transmission of long range under the conditions of battery powered.
The technical scheme that the utility model solves above-mentioned technical problem is as follows：A kind of two-way wired digital communication equipment, bag
Include the main frame and slave mutually communicated using cable；The main frame include battery, constant current source power supply circuit, host computer side single-chip microcomputer,
Host computer side digital current signal transtation mission circuit and host computer side digital current signal receiving circuit, the constant current source power supply circuit it is defeated
The power interface for entering end and host computer side single-chip microcomputer is respectively electrically connected on the battery, and the host computer side digital current signal is sent
Circuit is connected electrically on the host computer side single-chip microcomputer；The slave include power circuit, from pusher side single-chip microcomputer, from pusher side numeral electricity
Flow signal sending circuit and be connected electrically in from pusher side digital current signal receiving circuit, the power interface from pusher side single-chip microcomputer
In the output end of the power circuit, it is described be connected electrically in from pusher side digital current signal transtation mission circuit it is described from pusher side single-chip microcomputer
On；The input of the power circuit is connected electrically in by cable in the output end of the constant current source power supply circuit, the main frame
Side digital current signal transtation mission circuit be connected electrically in by cable it is described from pusher side digital current signal receiving circuit, it is described from
Pusher side digital current signal transtation mission circuit is connected electrically in the host computer side digital current signal receiving circuit by cable.
The beneficial effects of the utility model are：The utility model avoids line impedance change using constant-current source circuit to be caused
The power supply capacity of slave is changed, and infringement caused by external cable accidental short circuit can also be avoided；Meanwhile do not counting
According to it is to be communicated when, host computer side and digital current signal transtation mission circuit from pusher side and digital current signal receiving circuit do not consume
Electricity, when there is data communication, because signal is using the expression of electric digital datastream, it is not necessary to set terminal coupling resistance, you can complete
The communication for distance of growing up, power consumption are very low.
On the basis of above-mentioned technical proposal, the utility model can also do following improvement.
Further, the cable is the cable with four cored wires, wherein four cored wires are respectively the first cored wire, the second core
Line, the 3rd core and quad, the input of the power circuit are connected electrically in described by the first cored wire and the second cored wire
In the output end of constant current source power supply circuit, the host computer side digital current signal transtation mission circuit is connected electrically in institute by the 3rd cored wire
State from pusher side digital current signal receiving circuit, it is described to be electrically connected from pusher side digital current signal transtation mission circuit by quad
It is connected in the host computer side digital current signal receiving circuit.
Based on a kind of above-mentioned two-way wired digital communication equipment, the utility model also provides a kind of grounding current monitoring system
System.
A kind of grounding current monitoring system, including a kind of two-way wired digital communication equipment as described above, Yi Ji electricity
Collector, Wireless Telecom Equipment and monitor terminal are flowed, the current collector is provided with two, two current collector difference
The input for the host computer side digital current signal transtation mission circuit being connected electrically in a kind of described two-way wired digital communication equipment
Above and from the input of pusher side digital current signal transtation mission circuit, the Wireless Telecom Equipment is respectively electrically connected to described one
It is in the output end of host computer side digital current signal receiving circuit in the two-way wired digital communication equipment of kind and electric from pusher side numeral
In the output end for flowing signal receiving circuit, the monitor terminal and the Wireless Telecom Equipment wireless connection, and pass through the nothing
Host computer side digital current signal transtation mission circuit in line communication equipment and a kind of described two-way wired digital communication equipment and from
Pusher side digital current signal transtation mission circuit carries out radio communication.
The beneficial effects of the utility model are：A kind of grounding current monitoring system of the utility model uses wired and wireless phase
With reference to data transfer mode, be adapted to battery powered under the conditions of long-range data transmission.
On the basis of above-mentioned technical proposal, the utility model can also do following improvement.
Further, the current collector is arranged close at power cable connector, for gathering earth current.
Further, the Wireless Telecom Equipment carries out radio communication by GPRS network.
Brief description of the drawings
Fig. 1 is a kind of structured flowchart of two-way wired digital communication equipment of the utility model；
Fig. 2 is a kind of structured flowchart of grounding current monitoring system of the utility model.
Embodiment
Principle of the present utility model and feature are described below in conjunction with accompanying drawing, example is served only for explaining this practicality
It is new, it is not intended to limit the scope of the utility model.
As shown in figure 1, a kind of two-way wired digital communication equipment, including the main frame and slave mutually communicated using cable；
The main frame includes battery, constant current source power supply circuit, host computer side single-chip microcomputer, host computer side digital current signal transtation mission circuit and main frame
Side digital current signal receiving circuit, the input of the constant current source power supply circuit and the power interface difference of host computer side single-chip microcomputer
On the battery, the host computer side digital current signal transtation mission circuit is connected electrically on the host computer side single-chip microcomputer for electrical connection；
The slave include power circuit, from pusher side single-chip microcomputer, from pusher side digital current signal transtation mission circuit and from pusher side digital current
Signal receiving circuit, the power interface from pusher side single-chip microcomputer are connected electrically in the output end of the power circuit, it is described from
Pusher side digital current signal transtation mission circuit is connected electrically in described from pusher side single-chip microcomputer；The input of the power circuit passes through electricity
Cable is connected electrically in the output end of the constant current source power supply circuit, and the host computer side digital current signal transtation mission circuit passes through cable
It is described to pass through electricity from pusher side digital current signal transtation mission circuit described in being connected electrically in from pusher side digital current signal receiving circuit
Cable is connected electrically in the host computer side digital current signal receiving circuit.Specifically, the cable is the electricity with four cored wires
Cable, wherein four cored wires are respectively the first cored wire, the second cored wire, the 3rd core and quad, the input of the power circuit
End is connected electrically in by the first cored wire and the second cored wire in the output end of the constant current source power supply circuit, the host computer side numeral electricity
Stream signal sending circuit be connected electrically in by the 3rd cored wire it is described from pusher side digital current signal receiving circuit, it is described from pusher side
Digital current signal transtation mission circuit is connected electrically in the host computer side digital current signal receiving circuit by quad.
In a kind of two-way wired digital communication equipment of the utility model, host computer side single-chip microcomputer and from pusher side single-chip microcomputer it is
Low-power consumption, it completes the function such as the control of circuit, communication；Constant current source power supply circuit is used to power to slave, using constant-current source
Power supply circuit avoids power supply capacity change caused by line impedance change, while it also avoid external cable accidental short circuit and cause
Infringement；Power circuit is used for the conversion of voltage, the power supply to voltage needed for the circuit offer of slave.Host computer side digital current is believed
Number transtation mission circuit and from the effect of pusher side digital current signal transtation mission circuit it is, respectively in host computer side single-chip microcomputer and from pusher side single-chip microcomputer
Control under send digital current signal；Host computer side digital current signal receiving circuit and from pusher side digital current signal receive electricity
Road is used for Receiving Host side digital current signal transtation mission circuit respectively and sended over from pusher side digital current signal transtation mission circuit
Digital current signal, have digital current signal represent 0, nil current signal representation 1, according to asynchronous transmission (UART) mould
Formula is encoded, so as to complete the communication of digital information.If do not have data to communication, host computer side digital current signal receives
Circuit and from the not power consumptions of pusher side digital current signal transtation mission circuit, or host computer side digital current signal transtation mission circuit and from pusher side
The not power consumptions of digital current signal receiving circuit；When having data communication, due to being represented using digital current signal mode, it is not necessary to
Terminal coupling resistance is set, you can completes the communication of long range, power consumption is very low.
It is larger that a kind of two-way wired digital communication equipment of the utility model solves traditional RS485, CAN power consumption, no
Application under suitable battery powered occasion, can long-distance data transmission, transmission range is up to 10km.
Based on a kind of above-mentioned two-way wired digital communication equipment, the utility model also provides a kind of grounding current monitoring system
System.
As shown in Fig. 2 a kind of grounding current monitoring system, including a kind of two-way wired digital communication as described above are set
Standby, and current collector, Wireless Telecom Equipment and monitor terminal, the current collector is provided with two, two electric currents
The host computer side digital current signal that collector is respectively electrically connected in a kind of described two-way wired digital communication equipment sends electricity
On the input on road and from the input of pusher side digital current signal transtation mission circuit, the Wireless Telecom Equipment is electrically connected
In the output end of host computer side digital current signal receiving circuit in a kind of described two-way wired digital communication equipment and from
In the output end of pusher side digital current signal receiving circuit, the monitor terminal and the Wireless Telecom Equipment wireless connection, and
Sent out by the host computer side digital current signal in the Wireless Telecom Equipment and a kind of described two-way wired digital communication equipment
Power transmission road and from pusher side digital current signal transtation mission circuit carry out radio communication.The current collector is arranged close to electric power electricity
At cable joint, for gathering earth current.The Wireless Telecom Equipment carries out radio communication by GPRS network.
A kind of two-way wired digital communication of the utility model is set with grounding current monitoring system, completes current collector
Data transfer between wireless telecommunications system；Current collector is arranged near power cable connector, completes current data
Collection, wireless telecommunications system, which is arranged on electric power tunnel ventilating opening etc., the place of GPRS signals, completes current data and passes through GPRS
Network is sent to Surveillance center；A kind of grounding current monitoring system of the utility model is using communication skill that is wired and being wirelessly combined
Art, the transmission of data is carried out, good result can be obtained.Preferred embodiment of the present utility model is the foregoing is only, and is not had to
It is all within the spirit and principles of the utility model to limit the utility model, any modification, equivalent substitution and improvements made
Deng should be included within the scope of protection of the utility model.
Claims (5)
- A kind of 1. two-way wired digital communication equipment, it is characterised in that：Including the main frame and slave mutually communicated using cable；Institute Stating main frame includes battery, constant current source power supply circuit, host computer side single-chip microcomputer, host computer side digital current signal transtation mission circuit and host computer side Digital current signal receiving circuit, the input of the constant current source power supply circuit and the power interface of host computer side single-chip microcomputer are electric respectively On the battery, the host computer side digital current signal transtation mission circuit is connected electrically on the host computer side single-chip microcomputer for connection；Institute Stating slave includes power circuit, believes from pusher side single-chip microcomputer, from pusher side digital current signal transtation mission circuit and from pusher side digital current Number receiving circuit, the power interface from pusher side single-chip microcomputer are connected electrically in the output end of the power circuit, the slave Side digital current signal transtation mission circuit is connected electrically in described from pusher side single-chip microcomputer；The input of the power circuit passes through cable It is connected electrically in the output end of the constant current source power supply circuit, the host computer side digital current signal transtation mission circuit passes through cable electricity It is described to pass through cable from pusher side digital current signal transtation mission circuit described in being connected to from pusher side digital current signal receiving circuit It is connected electrically in the host computer side digital current signal receiving circuit.
- A kind of 2. two-way wired digital communication equipment according to claim 1, it is characterised in that：The cable is with four The cable of root cored wire, wherein four cored wires are respectively the first cored wire, the second cored wire, the 3rd core and quad, the power supply The input of circuit is connected electrically in by the first cored wire and the second cored wire in the output end of the constant current source power supply circuit, the master Pusher side digital current signal transtation mission circuit be connected electrically in by the 3rd cored wire it is described from pusher side digital current signal receiving circuit, It is described that the host computer side digital current signal reception is connected electrically in by quad from pusher side digital current signal transtation mission circuit On circuit.
- A kind of 3. grounding current monitoring system, it is characterised in that：Including a kind of two-way as described in above-mentioned claim 1 or 2 Wired digital communication equipment, and current collector, Wireless Telecom Equipment and monitor terminal, the current collector are provided with two Individual, two current collectors are respectively electrically connected to the host computer side numeral in a kind of described two-way wired digital communication equipment On the input of current signal transtation mission circuit and from the input of pusher side digital current signal transtation mission circuit, the radio communication Equipment is respectively electrically connected to the host computer side digital current signal receiving circuit in a kind of described two-way wired digital communication equipment Output end on and from the output end of pusher side digital current signal receiving circuit, the monitor terminal is set with the radio communication Standby wireless connection, and pass through the host computer side number in the Wireless Telecom Equipment and a kind of described two-way wired digital communication equipment Word current signal sending circuit and from pusher side digital current signal transtation mission circuit carry out radio communication.
- A kind of 4. grounding current monitoring system according to claim 3, it is characterised in that：The current collector is arranged on At power cable connector, for gathering earth current.
- A kind of 5. grounding current monitoring system according to claim 3 or 4, it is characterised in that：The Wireless Telecom Equipment Radio communication is carried out by GPRS network.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720454917.8U CN206698237U (en) | 2017-04-27 | 2017-04-27 | A kind of two-way wired digital communication equipment and grounding current monitoring system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720454917.8U CN206698237U (en) | 2017-04-27 | 2017-04-27 | A kind of two-way wired digital communication equipment and grounding current monitoring system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206698237U true CN206698237U (en) | 2017-12-01 |
Family
ID=60447626
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720454917.8U Active CN206698237U (en) | 2017-04-27 | 2017-04-27 | A kind of two-way wired digital communication equipment and grounding current monitoring system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206698237U (en) |
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2017
- 2017-04-27 CN CN201720454917.8U patent/CN206698237U/en active Active
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