CN206387492U - A kind of weighing-up wave Transmission system of feeder - Google Patents
A kind of weighing-up wave Transmission system of feeder Download PDFInfo
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- CN206387492U CN206387492U CN201620958467.1U CN201620958467U CN206387492U CN 206387492 U CN206387492 U CN 206387492U CN 201620958467 U CN201620958467 U CN 201620958467U CN 206387492 U CN206387492 U CN 206387492U
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- resistance
- electric capacity
- weighing
- operational amplifier
- voltage
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Abstract
The utility model discloses a kind of weighing-up wave Transmission system of feeder, it is connected including at least two groups transmitting devices and with transmitting device, for the control device for the running parameter that feeder is controlled according to the output signal of transmitting device, transmitting device includes the voltage amplifier circuit being connected with the weighing-up wave output end of the weighing sensor of feeder, the voltage-current converter circuit being connected with voltage amplifier circuit.The weighing-up wave of weighing sensor is drawn by voltage amplifier circuit and voltage-current converter circuit, the visualization of weighing-up wave is not only increased, but also remote monitoring can be realized.
Description
Technical field
The utility model is related to electronic technology field, the weighing-up wave Transmission system of more particularly to a kind of feeder.
Background technology
Weighing sensor is as one of feeder critical piece, and the current part is integrated in coal feeder control system,
The state of weighing sensor must could be checked by cumbersome step.What is more important, when weighing sensor is in work
During state, maintainer can not check the output signal of weighing sensor in real time, can not more realize remote monitoring.
As can be seen here, how to diagnose in time the failure of weighing sensor and realize remote monitoring be those skilled in the art urgently
Ground to be solved problem.
Utility model content
The purpose of this utility model is to provide a kind of weighing-up wave Transmission system of feeder, for diagnosing biography of weighing in time
The failure of sensor and realize remote monitoring.
In order to solve the above technical problems, the utility model provides a kind of weighing-up wave Transmission system of feeder, including extremely
Lack two groups of transmitting devices and be connected with the transmitting device, for controlling feeder according to the output signal of the transmitting device
The control device of running parameter, the transmitting device includes what is be connected with the weighing-up wave output end of the weighing sensor of feeder
Voltage amplifier circuit, the voltage-current converter circuit being connected with the voltage amplifier circuit.
Preferably, in addition to：The power module being connected with the power supply signal input of the weighing sensor.
Preferably, the voltage amplifier circuit is specifically included：First operational amplifier, the first electric capacity, the second electric capacity, first
Resistance, second resistance and voltmeter；
The first end of the in-phase input end of first operational amplifier and first electric capacity with the weighing-up wave
The anode connection of output end, the second end ground connection of first electric capacity, the inverting input of first operational amplifier and institute
The negative terminal for stating weighing-up wave output end is connected and is grounded, and the of the first end of the first resistor and first operational amplifier
One end is connected, and the second end of the first resistor is connected with the 8th end of first operational amplifier, and first computing is put
7th end of big device is connected with the first power positive end, and the 4th end of first operational amplifier is connected with the first power supply negative terminal,
The output end of first operational amplifier and the first end of second electric capacity, the first end of the second resistance and described
The anode of voltmeter is all connected with, the second end of second electric capacity, the second end of the second resistance, first operation amplifier
5th end of device and the negative terminal of the voltmeter are grounded.
Preferably, the model AD620AN of first operational amplifier, first electric capacity and second electric capacity
Capacitance is 1 μ F, and the resistance of the first resistor is 499 Ω, and the resistance of the second resistance is 1k Ω.
Preferably, the voltage-current converter circuit is specifically included：3rd resistor, the 4th resistance, the 5th resistance, the 6th electricity
Resistance, the 7th resistance, the 8th resistance, the 9th resistance, the second operational amplifier, the 3rd electric capacity, the 4th electric capacity, the 5th electric capacity, the 6th
Electric capacity, NPN type triode, PNP type triode, diode and passive binding post)；
The first end of the 3rd resistor is connected with the anode of the voltmeter, the second end of the 3rd resistor with it is described
The in-phase input end connection of second operational amplifier, the inverting input of second operational amplifier and bearing for the voltmeter
The first end connection of end and the 4th resistance, the second end of the 4th resistance connects with the first end of the 5th resistance
Connect, the emitter stage of the first end of the 5th resistance also with the NPN type triode is connected, the first end of the 3rd electric capacity and
The first end of 4th electric capacity is connected with the 7th end of second operational amplifier, the second end of the 3rd electric capacity and institute
State the second end ground connection of the 4th electric capacity, the first end of the 5th electric capacity and the first end of the 6th electric capacity and the described second fortune
Calculate the 4th end connection of amplifier, the second end of the 5th electric capacity and the second end ground connection of the 6th electric capacity, described second
The output end of operational amplifier is connected with the first end of the 6th resistance, the second end and the NPN type of the 6th resistance
The base stage connection of triode, the colelctor electrode of the NPN type triode is connected with the first end of the 7th resistance, the 7th electricity
Second end of resistance is connected with the positive pole of the diode, the first end and second of the negative pole of the diode and the 8th resistance
Power positive end is connected, and the second end of the 8th resistance is connected with the emitter stage of the PNP type triode, the pole of positive-negative-positive three
The colelctor electrode of pipe is connected with the first end of the 9th resistance, and the second end of the 9th resistance connects with the passive binding post
Connect, the first end of the 8th resistance is connected as the output end of the voltage-current converter circuit with the control device.
Preferably, the resistance of the resistance of the 3rd resistor, the resistance of the 4th resistance and the 6th resistance is equal
For 1k Ω, the resistance of the 5th resistance is 300 Ω, and the resistance of the 7th resistance is 200 Ω, and the resistance of the 8th resistance is 100 Ω,
The resistance of 9th resistance is 20 Ω, the model CA3140 of the second operational amplifier.
Preferably, the control device is DCS control systems or PLC control system, the DCS control systems or described
The signal acquisition terminal of PLC control system is connected with the first end of the 8th resistance.
Preferably, the transmitting device is 2 groups, and the quantity of the weighing sensor is 2.
Preferably, it is additionally included in the alarm mould for receiving the control device output fault-signal alarm prompting
Block.
The weighing-up wave Transmission system of feeder provided by the utility model, including at least two groups transmitting devices and with biography
Defeated device connection, the control device of the running parameter for controlling feeder according to the output signal of transmitting device, transmitting device
The voltage amplifier circuit being connected including the weighing-up wave output end with the weighing sensor of feeder, is connected with voltage amplifier circuit
Voltage-current converter circuit.The weighing-up wave of weighing sensor is drawn by voltage amplifier circuit and voltage-current converter circuit
Go out, not only increase the visualization of weighing-up wave, but also remote monitoring can be realized.
Brief description of the drawings
In order to illustrate more clearly of the utility model embodiment, letter will be done to the required accompanying drawing used in embodiment below
Single introduction, it should be apparent that, drawings in the following description are only some embodiments of the present utility model, general for this area
For logical technical staff, on the premise of not paying creative work, other accompanying drawings can also be obtained according to these accompanying drawings.
A kind of structure chart of the weighing-up wave Transmission system for feeder that Fig. 1 provides for the utility model embodiment；
A kind of voltage amplifier circuit figure that Fig. 2 provides for the utility model embodiment；
A kind of voltage-current converter circuit figure that Fig. 3 provides for the utility model embodiment.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is carried out
Clearly and completely describe, it is clear that described embodiment is only a part of embodiment of the utility model, rather than it is all real
Apply example.Based on the embodiment in the utility model, those of ordinary skill in the art are not under the premise of creative work is made, institute
The every other embodiment obtained, belongs to the utility model protection domain.
Core of the present utility model is to provide a kind of weighing-up wave Transmission system of feeder.
In order that those skilled in the art more fully understand the utility model scheme, below in conjunction with the accompanying drawings and specific implementation
The utility model is described in further detail for mode.
A kind of structure chart of the weighing-up wave Transmission system for feeder that Fig. 1 provides for the utility model.As shown in figure 1,
The weighing-up wave Transmission system of feeder, including at least two groups transmitting devices 10 and be connected with transmitting device 10, for according to biography
The control device 20 of the running parameter of the output signal control feeder of defeated device 10, transmitting device 10 includes the title with feeder
Retransmit the voltage amplifier circuit 40 of the weighing-up wave output end connection of sensor 30, the voltage x current being connected with voltage amplifier circuit 40
Change-over circuit 50.
In specific implementation, transmitting device 10 will be matched with the quantity of weighing sensor 30, it is generally the case that in feeder
In have two weighing sensors 30, the effect of weighing sensor 30 is that weight parameter is converted into voltage signal output.Two titles
Retransmit sensor 30 if normal work, then the difference of output signal be 0 or a less scope in, if wherein one
Individual weighing sensor 30 breaks down, then the difference of the output signal of the two will be larger, more than default scope, with this determination
Sensor breaks down.In the present embodiment, by the weighing-up wave output end of weighing sensor 30 and voltage amplifier circuit 40 and
Voltage-current converter circuit 50 is connected, and can realize and weighing-up wave is amplified and changed.Control device 20 and Voltage to current transducer
Circuit 50 is connected, the output signal for showing two or more voltage-current converter circuits 50.Staff can pass through control
The real time inspection weighing-up wave of device 20 processed, additionally it is possible to which realization transmits a signal to management platform, realizes remote monitoring.
The present embodiment provide feeder weighing-up wave Transmission system, including at least two groups transmitting devices and with transmission fill
Connection is put, the control device of the running parameter for controlling feeder according to the output signal of transmitting device, transmitting device includes
The voltage amplifier circuit being connected with the weighing-up wave output end of the weighing sensor of feeder, the electricity being connected with voltage amplifier circuit
Current voltage change-over circuit.The weighing-up wave of weighing sensor is drawn by voltage amplifier circuit and voltage-current converter circuit,
The visualization of weighing-up wave is not only increased, but also remote monitoring can be realized.
As preferred embodiment, in addition to：The power module being connected with the power supply signal input of weighing sensor.
It is understood that the effect of power module is powered for weighing sensor, the parameter of power module will be with weighing
Sensor matches, and the input voltage of power module is alternating current 220V in specific implementation, and 50HZ is whole by transformer pressure-reducing
Device rectification is flowed, filter circuit filtering and voltage-stablizer voltage stabilizing etc. are converted to weighing sensor and provide suitable electric energy.
It is understood that the effect of voltage amplifier circuit 40 is the weighing-up wave amplification for exporting weighing sensor, appoint
As long as the circuit of meaning can realize voltage amplification, the present embodiment is realized using following device.Fig. 2 is the utility model embodiment
A kind of voltage amplifier circuit figure provided.As shown in Fig. 2 voltage amplifier circuit is specifically included：First operational amplifier U1, first
Electric capacity C1, the second electric capacity C2, first resistor R1, second resistance R2 and voltmeter XMM1.
Specific annexation is as follows：The first end of the in-phase input end of first operational amplifier and the first electric capacity is with weighing
The anode connection of signal output part, the second end ground connection of the first electric capacity, the inverting input of the first operational amplifier and letter of weighing
The negative terminal of number output end is connected and is grounded, and the first end of first resistor is connected with the first end of the first operational amplifier, the first electricity
Second end of resistance is connected with the 8th end of the first operational amplifier, and the 7th end and the first power positive end of the first operational amplifier connect
Connect, the 4th end of the first operational amplifier is connected with the first power supply negative terminal, the output end of the first operational amplifier and the second electric capacity
First end, the anode of the first end of second resistance and voltmeter be all connected with, the second end of the second electric capacity, the of second resistance
The negative terminal at two ends, the 5th end of the first operational amplifier and voltmeter is grounded.
As preferred embodiment, the model AD620AN of the first operational amplifier, the first electric capacity and the second electric capacity
Capacitance is 1 μ F, and the resistance of first resistor is 499 Ω, and the resistance of second resistance is 1k Ω.
It is understood that the effect of voltage-current converter circuit 50 is by the voltage signal conversion of voltage amplifier circuit 40
For current signal, as long as arbitrary circuit can realize the conversion of voltage and electric current, the present embodiment is realized using following device.
A kind of voltage-current converter circuit figure that Fig. 3 provides for the utility model embodiment.As shown in figure 3, voltage-current converter circuit
50, specifically include：3rd resistor R27, the 4th resistance R28, the 5th resistance R29, the 6th resistance R30, the 7th resistance R31, the 8th
Resistance R32, the 9th resistance R33, the second operational amplifier U2, the 3rd electric capacity C40, the 4th electric capacity C18, the 5th electric capacity C17, the 6th
Electric capacity 39, NPN type triode V6, PNP type triode V7, diode V2 and passive binding post X2).
Annexation is as follows：The anode of the first end of 3rd resistor and voltmeter is connected, the second end of 3rd resistor and the
The in-phase input end connection of two operational amplifiers, the inverting input of the second operational amplifier and the negative terminal of voltmeter and the 4th
The first end connection of resistance, the second end of the 4th resistance is connected with the first end of the 5th resistance, the first end of the 5th resistance also with
The emitter stage connection of NPN type triode, the first end of the 3rd electric capacity and the first end of the 4th electric capacity and the second operational amplifier
7th end is connected, the second end of the 3rd electric capacity and the second end ground connection of the 4th electric capacity, the first end and the 6th electric capacity of the 5th electric capacity
First end be connected with the 4th end of the second operational amplifier, the second end ground connection of the second end of the 5th electric capacity and the 6th electric capacity,
The output end of second operational amplifier is connected with the first end of the 6th resistance, the second end of the 6th resistance and NPN type triode
Base stage is connected, and the colelctor electrode of NPN type triode is connected with the first end of the 7th resistance, the second end of the 7th resistance and diode
Positive pole is connected, and the first end of the negative pole of diode and the 8th resistance is connected with second source anode, the second end of the 8th resistance and
The emitter stage connection of PNP type triode, the colelctor electrode of PNP type triode is connected with the first end of the 9th resistance, the 9th resistance
Second end is connected with passive binding post, the output end and control of the first end of the 8th resistance as voltage-current converter circuit 50
Device 20 is connected.
Preferably embodiment, the resistance of the resistance of 3rd resistor, the resistance of the 4th resistance and the 6th resistance is equal
For 1k Ω, the resistance of the 5th resistance is 300 Ω, and the resistance of the 7th resistance is 200 Ω, and the resistance of the 8th resistance is 100 Ω, the 9th
The resistance of resistance is 20 Ω, the model CA3140 of the second operational amplifier.
Preferably embodiment, control device 20 is DCS control systems or PLC control system, DCS control systems or
The signal acquisition terminal of PLC control system is connected with the first end of the 8th resistance.
It is understood that DCS control systems or PLC control system collection is electric current I32 on the 8th resistance R32,
That is the voltage signal of weighing sensor 30 is ultimately converted to current signal.
Preferably embodiment, transmitting device 10 is 2 groups, and the quantity of weighing sensor 30 is 2.
It is understood that generally by two weighing sensors 30 in existing feeder, therefore passed in the present embodiment
Defeated device 10 is 2 groups.If more than two weighing sensors 30 in feeder, transmitting device 10 is also accordingly increased.
Preferably embodiment, is additionally included in the report for receiving the output fault-signal alarm prompting of control device 20
Alert reminding module.
In specific implementation, control device 20 is to include processor, can be determined according to the size of two current signals
Whether sensor failure is had, if it is, the alarm module prompts that can set out.It is understood that alarm
Module can be audible-visual annunciator.
It is understood that the parameter of different voltage amplifier circuit and different voltage-current converter circuits is different,
Then the 8th resistance R32 electric current I32 is just different, can be selected according to actual conditions.In one embodiment, weighing sensor is worked as
Weighing-up wave be 0-3mV when, suitable parameter can be selected so that voltage amplifier circuit output signal be 0-3V, i.e. voltage
10 times of amplification, selects suitable parameter to cause the output signal of voltage-current converter circuit to be 4-20mA.
The weighing-up wave Transmission system to feeder provided by the utility model is described in detail above.Specification
In each embodiment described by the way of progressive, what each embodiment was stressed be it is different from other embodiment it
Place, between each embodiment identical similar portion mutually referring to.For device disclosed in embodiment, due to itself and reality
Apply that method disclosed in example is corresponding, so description is fairly simple, related part is referring to method part illustration.It should refer to
Go out, for those skilled in the art, can also be to this on the premise of the utility model principle is not departed from
Utility model carries out some improvement and modification, and these are improved and modification also falls into the utility model scope of the claims
It is interior.
Claims (8)
1. the weighing-up wave Transmission system of a kind of feeder, it is characterised in that passed including at least two groups transmitting devices and with described
Defeated device connection, the control device of the running parameter for controlling feeder according to the output signal of the transmitting device is described
Transmitting device includes the voltage amplifier circuit being connected with the weighing-up wave output end of the weighing sensor of feeder, with the voltage
The voltage-current converter circuit of amplifying circuit connection；
The voltage amplifier circuit is specifically included：First operational amplifier, the first electric capacity, the second electric capacity, first resistor, the second electricity
Resistance and voltmeter；The first end of the in-phase input end of first operational amplifier and first electric capacity with the letter of weighing
The anode connection of number output end, the second end ground connection of first electric capacity, the inverting input of first operational amplifier with
The negative terminal of the weighing-up wave output end is connected and is grounded, the first end of the first resistor and first operational amplifier
First end is connected, and the second end of the first resistor is connected with the 8th end of first operational amplifier, first computing
7th end of amplifier is connected with the first power positive end, and the 4th end and the first power supply negative terminal of first operational amplifier connect
Connect, the first end of the output end of first operational amplifier and second electric capacity, the first end of the second resistance and
The anode of the voltmeter is all connected with, the second end of second electric capacity, the second end of the second resistance, first computing
5th end of amplifier and the negative terminal of the voltmeter are grounded.
2. the weighing-up wave Transmission system of feeder according to claim 1, it is characterised in that also include：Claim with described
Retransmit the power module of the power supply signal input connection of sensor.
3. the weighing-up wave Transmission system of feeder according to claim 1, it is characterised in that first operation amplifier
The capacitance of the model AD620AN of device, first electric capacity and second electric capacity is 1 μ F, and the resistance of the first resistor is
499 Ω, and the resistance of the second resistance is 1k Ω.
4. the weighing-up wave Transmission system of feeder according to claim 1, it is characterised in that the Voltage to current transducer
Circuit is specifically included：3rd resistor, the 4th resistance, the 5th resistance, the 6th resistance, the 7th resistance, the 8th resistance, the 9th resistance,
Second operational amplifier, the 3rd electric capacity, the 4th electric capacity, the 5th electric capacity, the 6th electric capacity, NPN type triode, PNP type triode, two
Pole pipe and passive binding post；
The first end of the 3rd resistor is connected with the anode of the voltmeter, the second end of the 3rd resistor and described second
The in-phase input end connection of operational amplifier, the inverting input of second operational amplifier and the negative terminal of the voltmeter with
And the first end of the 4th resistance is connected, the second end of the 4th resistance is connected with the first end of the 5th resistance, institute
State emitter stage of the first end of the 5th resistance also with the NPN types triode to be connected, the first end of the 3rd electric capacity and described
The first end of 4th electric capacity is connected with the 7th end of second operational amplifier, the second end of the 3rd electric capacity and described
The second end ground connection of four electric capacity, the first end of the 5th electric capacity and the first end of the 6th electric capacity are put with second computing
The 4th end connection of big device, the second end of the 5th electric capacity and the second end ground connection of the 6th electric capacity, second computing
The output end of amplifier is connected with the first end of the 6th resistance, the second end of the 6th resistance and the pole of NPN type three
The base stage connection of pipe, the colelctor electrode of the NPN type triode is connected with the first end of the 7th resistance, the 7th resistance
Second end is connected with the positive pole of the diode, the first end and second source of the negative pole of the diode and the 8th resistance
Anode is connected, and the second end of the 8th resistance is connected with the emitter stage of the PNP type triode, the PNP type triode
Colelctor electrode is connected with the first end of the 9th resistance, and the second end of the 9th resistance is connected with the passive binding post,
The first end of 8th resistance is connected as the output end of the voltage-current converter circuit with the control device.
5. the weighing-up wave Transmission system of feeder according to claim 4, it is characterised in that the resistance of the 3rd resistor
The resistance of value, the resistance of the 4th resistance and the 6th resistance is 1k Ω, and the resistance of the 5th resistance is 300
Ω, the resistance of the 7th resistance is 200 Ω, and the resistance of the 8th resistance is 100 Ω, and the resistance of the 9th resistance is 20 Ω, the second computing
The model CA3140 of amplifier.
6. the weighing-up wave Transmission system of feeder according to claim 4, it is characterised in that the control device is
DCS control systems or PLC control system, the signal acquisition terminal of the DCS control systems or the PLC control system and described the
The first end connection of eight resistance.
7. the weighing-up wave Transmission system of feeder according to claim 1, it is characterised in that the transmitting device is 2
Group, the quantity of the weighing sensor is 2.
8. the weighing-up wave Transmission system of the feeder according to claim 1 to 7 any one, it is characterised in that also wrap
Include and receiving the alarm module of the control device output fault-signal alarm prompting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620958467.1U CN206387492U (en) | 2016-08-26 | 2016-08-26 | A kind of weighing-up wave Transmission system of feeder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620958467.1U CN206387492U (en) | 2016-08-26 | 2016-08-26 | A kind of weighing-up wave Transmission system of feeder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206387492U true CN206387492U (en) | 2017-08-08 |
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ID=59485831
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620958467.1U Active CN206387492U (en) | 2016-08-26 | 2016-08-26 | A kind of weighing-up wave Transmission system of feeder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206387492U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112082172A (en) * | 2020-08-03 | 2020-12-15 | 郑州汇达自动化科技有限公司 | Coal pulverizing and feeding control system for boiler of thermal power plant and control method thereof |
-
2016
- 2016-08-26 CN CN201620958467.1U patent/CN206387492U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112082172A (en) * | 2020-08-03 | 2020-12-15 | 郑州汇达自动化科技有限公司 | Coal pulverizing and feeding control system for boiler of thermal power plant and control method thereof |
| CN112082172B (en) * | 2020-08-03 | 2023-03-21 | 郑州汇达自动化科技有限公司 | Coal pulverizing and feeding control system for boiler of thermal power plant and control method thereof |
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