CN109275072A - Double 32 channel audio switchings and relay output device - Google Patents
Double 32 channel audio switchings and relay output device Download PDFInfo
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- CN109275072A CN109275072A CN201811151428.0A CN201811151428A CN109275072A CN 109275072 A CN109275072 A CN 109275072A CN 201811151428 A CN201811151428 A CN 201811151428A CN 109275072 A CN109275072 A CN 109275072A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R3/00—Circuits for transducers, loudspeakers or microphones
- H04R3/12—Circuits for transducers, loudspeakers or microphones for distributing signals to two or more loudspeakers
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Abstract
Proposed by the present invention is a kind of pair of 32 channel audios switching and relay output device, expanded circuit connects 32 channel input modules in its structure, 32 channel input modules connect multi-path choice switching module, multi-path choice switching module connects record/playback control circuit and pretreatment circuit, pre-processes circuit connection power amplifier and loudspeaker；External control interface link address control module and interlock circuit, the connection multi-path choice switching module and control relay circuit of interlock circuit.Advantages of the present invention: 1) programmable device is used, the integrated level and scalability of circuit are improved；2) increase expanded circuit, port number can be multiplied；3) increase the recording and playback of voice signal, and reset and use same set of power amplifier with former monitor；4) increase relay and digital signal output function.
Description
Technical field
The present invention relates to a kind of double 32 channel audios switchings and relay output devices, belong to pipe-line system monitoring skill
Art field.
Background technique
Leakage of boiler tubes automatic alarm device is to be realized using acoustic measurement and signal processing technology to boiler blasting
The early alert of (water screen tube, superheater tube, reheater tube, economizer tube) leakage.Carry out both at home and abroad in early eighties
Research to leakage of boiler tubes technique for detection, and have product commercially available successively, especially after the nineties,
The product is widely used on large capacity electricity generation boiler at home, the technology of product, performance also more mature and reliable.
With the development of generation technology, modern electricity generation boiler has entered large capacity, high parameter epoch, and generator tube quantity is not
Disconnected to increase, the requirement to operational reliability is also continuously improved.Generator tube will directly affect generating set once leakage occurs
Safe and economical operation, thus leakage of boiler tubes prevent and to the early detection of leakage and processing to electricity power enterprise increasingly
It is important.However, existing most of acoustic measurement warning device, voice-grade channel number is not able to satisfy large-sized unit and joint pot
The demand of furnace detection, does not have relay output function and monitoring recording software exchange function, and connection is many and diverse yet, uses
Inconvenience, deployment cost is high, is not able to satisfy the requirement for being switched fast control.
The leakage automatic alarm device that existing generator tube uses generallys use address decoding and generates chip selection signal, realizes and reads
Write order realizes data register by interlock circuit, to complete the selection handoff functionality in channel.Realize the circuit of above-mentioned function
Discrete component is generallyd use, monitors and relay control panel card control circuit uses small scale integration, integrated level is not high,
Board size is big, high failure rate；It since port number is limited, and can not extend, voice-grade channel number is not able to satisfy large-sized unit and joint
The demand of boiler exam.
It is respectively adopted not secondly, completing the system that audio sample is monitored and audio A/D acquires function in existing warning device
Same board pushes loudspeaker to realize the monitoring of monitoring signal, does not have monitoring and recording software handoff functionality by power amplifier；
If playing the audio signal monitored and recorded by respective audio power amplifier circuit, connection will be very many and diverse, very big shadow
It rings and uses, deployment cost, and A/D analog input card higher cost are improved, to greatly improve system synthesis sheet.
Also, the not set outputting circuit for relay of the monitoring device of current version, basic function is not perfect, causes to make
With inconvenience, expanded slot of computer mouth will be occupied by such as increasing relay control panel card, further increase equipment cost.Meanwhile it is logical
Relay control panel cartoon often only provides relay passive contact, is not able to satisfy the requirement for being switched fast control, and only
Unified each voice-grade channel self-test signal output can be provided, cannot achieve each channel self-checking function of branch's inspection.
Summary of the invention
It is an object of the invention to overcome existing boiler tube monitoring alarm voice-grade channel quantity is low, function is not complete, at
The defects of this is high, propose it is a kind of facilitate operation, have recording and the double 32 channel audios switchings and relay of relay output function
Device output device.
Technical solution of the invention: a kind of pair of 32 channel audios switching and relay output device, structure include
It is 32 paths input modules 1, external control interface 2, multi-path choice switching module 3, address control module 4, interlock circuit 5, pre-
Processing circuit 6, power amplifier 7, loudspeaker 8, control relay circuit 9, record/playback control circuit 10, expanded circuit 11；Its
The output end of middle expanded circuit 11 connects the input terminal of 32 channel input modules 1, and the output end connection of 32 channel input modules 1 is more
Road selects the first input end of switching module 3, and the first output end of multi-path choice switching module 3 connects record/playback control circuit 10
Input terminal, the input terminal of the second output terminal connection pretreatment circuit 6 of multi-path choice switching module 3, pretreatment circuit 6
Output end connects the input terminal of power amplifier 7, the input terminal of the output end connection loudspeaker 8 of power amplifier 7；Outside control
The output end of the input terminal of the output end link address control module 4 of interface 2, address control module 4 connects the defeated of interlock circuit 5
Enter end, the first output end of interlock circuit 5 connects the second input terminal of multi-path choice switching module 3, and the second of interlock circuit 5 is defeated
The input terminal of outlet connection control relay circuit 9.
Advantages of the present invention:
1) programmable device is used, the integrated level and scalability of circuit are improved；
2) increase expanded circuit, port number can be multiplied；
3) increase the recording and playback of voice signal, and reset and use same set of power amplifier with former monitor；
4) increase relay and digital signal output function.
Detailed description of the invention
Attached drawing 1 is the structural schematic diagram of double 32 channel audios switchings and relay output device.
Attached drawing 2 is the conspectus of double 32 channel audios switchings and relay output device pretreatment circuit.
In figure 1 be 32 paths input modules, 2 be external control interface, 3 be multi-path choice switching module, 4 be address control
Molding block, 5 be interlock circuit, 6 be pretreatment circuit, 7 be power amplifier, 8 be loudspeaker, 9 be control relay circuit, 10
It is record/playback control circuit, 11 is expanded circuit.
Specific embodiment
As shown in Figure 1, a kind of double 32 channel audios switchings and relay output device, structure are inputted including 32 paths
Module 1, external control interface 2, multi-path choice switching module 3, address control module 4, interlock circuit 5, pretreatment circuit 6, function
Rate amplifier 7, loudspeaker 8, control relay circuit 9, record/playback control circuit 10, expanded circuit 11；Wherein expanded circuit 11
Output end connect 32 channel input modules 1 input terminal, 32 channel input modules 1 output end connection multi-path choice switch mould
The first input end of block 3, the input terminal of the first output end connection record/playback control circuit 10 of multi-path choice switching module 3 are more
Road selects the input terminal of the second output terminal connection pretreatment circuit 6 of switching module 3, and the output end of pretreatment circuit 6 connects function
The input terminal of rate amplifier 7, the input terminal of the output end connection loudspeaker 8 of power amplifier 7；The output of external control interface 2
Hold the input terminal of link address control module 4, the input terminal of the output end connection interlock circuit 5 of address control module 4, interlocking electricity
Road 5 the first output end connection multi-path choice switching module 3 the second input terminal, interlock circuit 5 second output terminal connection after
The input terminal of electrical apparatus control circuit 9.
The 32 channel input module 1(include 1-32 input port/INPUT1-32) use independent 32 channel audio
External input signal is transmitted to 32 channel input modules 1 by expanded circuit 11 by signal input AC galvanic separation, in
Portion is equipped with 32 points of inputs and control module is isolated, and each channel in 32 channel input modules 1 passes through R1-R32 resistance for electric current
(AC) alternating voltage is converted to, the voltage signal output end of conversion inputs the voltage signal inputs that control module is isolated with 32 points
Correspondence connects.
The external control interface 2 receives bus address, data/address bus and control bus on isa bus socket
Signal, by programmable logic device generate address bit chip selection signal, by address control module 4 generate channel selecting letter
Number, then registers latch signal is generated through interlock circuit 5, to control the work of multi-path choice switching module 3, controls and select one by one
The voltage signal inputs for selecting 32 points of input isolation control modules, which correspond to connect, monitors channel.
The interlock circuit 5 interlocks remaining 31 tunnel and avoids interfering for individually monitoring 1 tunnel when controlling each monitoring.
The multi-path choice switching module 3 controls 32 points of inputs, is exported according to address control module 4 and interlock circuit 5
Signal to pretreatment circuit 6 export 1 tunnel exchange level monitoring signal.
As shown in Fig. 2, the pretreatment circuit 6 filters alternating voltage and monitoring signal, guarantee that signal is pure, without dry
It disturbs, no noise；Its structure includes MAX306 selector, I grades of operational amplifiers, relay, control circuit, filter circuit, II grades
Operational amplifier, A potentiometer and B potentiometer；Wherein the input terminal of MAX306 selector connects multi-path choice switching module 3, defeated
Outlet connects I grades of operational amplifiers and relay, and relay connects control circuit, for controlling extension, recording and playback；I grades
The output end of operational amplifier connects the input terminal of filter circuit by A potentiometer, and the output end of filter circuit connects II grades of fortune
The input terminal of amplifier is calculated, the output end of II grades of operational amplifiers connects power amplifier 7 and loudspeaker 8 by B potentiometer.
The A potentiometer carries out the undistorted adjustment of sensitivity of small range to input signal, guarantees the signal of follow-up operation
Controllably；The circuit of input power amplifier is adjusted in the B potentiometer, guarantees that signal is pure, noiseless, no noise.
The II grade operational amplifier carries out 10 times of signals to filtered circuit and amplifies in real time.
The power amplifier 7 amplifies control to input signal, and current signal is converted to sound by loudspeaker 8
The output of frequency signal.
In actual use, input signal enters 32 paths input modules 1, converts electrical current into friendship by R1-R32 resistance
Galvanic electricity pressure；Address control module 4 uses ISA interface, and address bit is controlled and selected one by one by external control interface 2, simultaneously
Interlock circuit 3 controls only individually monitors 1 tunnel every time, and interlocks remaining 31 tunnel；Multi-path choice switching module 3 makes 32 points of inputs logical
Address control module 4 is crossed, the MAX306 selector in the control pretreatment circuit 6 of interlock circuit 5 exports 1 tunnel exchange level and monitors letter
Number；A potentiometer carries out adjustment of sensitivity to input signal, carries out the undistorted adjusting of small range to input signal；I grades of operation amplifiers
Device carries out 10 times of amplifications in real time to filtered circuit to alternating voltage, monitoring signal filtering, II grades of operational amplifiers；B current potential
The circuit of input power amplifier is adjusted in device, amplifies control to input signal by power amplifier 7, then by raising
Current signal is converted to audio signal output by sound device 8.
The present invention by external control interface 2, address control module 4, interlock circuit 5 and control relay circuit 9 by being total to
With realization extension, recording, monitoring and playback；External control interface 2 is with receiving the address bus on external isa bus socket
Location, data/address bus and control bus signal, by programmable logic device generate address bit chip selection signal, controlled by address
Module 4 generates channel selecting signal, then generates registers latch signal through interlock circuit 5 to control relay work.
Claims (10)
1. pair switching of 32 channel audios and relay output device, it is characterized in that including 32 paths input modules (1), external control
Interface (2) processed, multi-path choice switching module (3), address control module (4), interlock circuit (5), pretreatment circuit (6), power
Amplifier (7), loudspeaker (8), control relay circuit (9), record/playback control circuit (10), expanded circuit (11)；Wherein expand
The output end for opening up circuit (11) connects the input terminal of 32 channel input modules (1), the output end connection of 32 channel input modules (1)
The first input end of multi-path choice switching module (3), the first output end connection record/playback control of multi-path choice switching module (3)
The input terminal of circuit (10), the input terminal of second output terminal connection pretreatment circuit (6) of multi-path choice switching module (3), in advance
The output end of the input terminal of output end connection power amplifier (7) of processing circuit (6), power amplifier (7) connects loudspeaker
(8) input terminal；The input terminal of the output end link address control module (4) of external control interface (2), address control module
(4) the first output end connection multi-path choice of the input terminal of output end connection interlock circuit (5), interlock circuit (5) switches mould
Second input terminal of block (3), the input terminal of second output terminal connection control relay circuit (9) of interlock circuit (5).
2. double 32 channel audios switchings according to claim 1 and relay output device, it is characterized in that described 32 are logical
Road input module (1) includes 32 input ports will be external using independent 32 channel audio signal input AC galvanic separation
Input signal is transmitted to 32 channel input modules (1) by expanded circuit (11), is internally provided with 32 points of input isolation control moulds
Block, each channel in 32 channel input modules (1) convert electrical current into alternating voltage, the voltage of conversion by R1-R32 resistance
The voltage signal inputs of control module are corresponding connects for signal output end and 32 points of inputs isolation.
3. double 32 channel audios switchings according to claim 1 and relay output device, it is characterized in that the outside
Control interface (2) receives the signal of bus address on isa bus socket, data/address bus and control bus, by that can compile
Journey logical device generates address bit chip selection signal, generates channel selecting signal by address control module (4), then through interlock circuit
(5) registers latch signal is generated, to control multi-path choice switching module (3) work, control one by one and select 32 points of inputs
The voltage signal inputs of isolation control module, which correspond to connect, monitors channel.
4. double 32 channel audios switchings according to claim 1 and relay output device, it is characterized in that the interlocking
Circuit (5) interlocks remaining 31 tunnel and avoids interfering for individually monitoring 1 tunnel when controlling each monitoring.
5. double 32 channel audios switchings according to claim 1 and relay output device, it is characterized in that the multichannel
Selection switching module (3) controls 32 points of inputs, and the signal exported according to address control module (4) and interlock circuit (5) is located to pre-
It manages circuit (6) and exports 1 tunnel exchange level monitoring signal.
6. double 32 channel audios switchings according to claim 1 and relay output device, it is characterized in that the pre- place
It manages circuit (6) to filter alternating voltage and monitoring signal, guarantees that signal is pure, noiseless, no noise；Its structure includes MAX306
Selector, I grade operational amplifier, relay, control circuit, filter circuit, II grades of operational amplifiers, A potentiometer and B current potential
Device；Wherein the input terminal of MAX306 selector connects multi-path choice switching module (3), output end connect I grade operational amplifiers with
Relay, relay connect control circuit, for controlling extension, recording and playback；The output end of I grades of operational amplifiers passes through A
Potentiometer connects the input terminal of filter circuit, and the output end of filter circuit connects the input terminal of II grades of operational amplifiers, II grades of fortune
The output end for calculating amplifier passes through B potentiometer connection power amplifier (7) and loudspeaker (8).
7. double 32 channel audios switchings according to claim 6 and relay output device, it is characterized in that the A current potential
Device carries out the undistorted adjustment of sensitivity of small range to input signal, guarantees that the signal of follow-up operation is controllable；The B potentiometer pair
The circuit of input power amplifier is adjusted, and guarantees that signal is pure, noiseless, no noise.
8. double 32 channel audios switchings according to claim 6 and relay output device, it is characterized in that the II grade
Operational amplifier carries out (10) times signal to filtered circuit and amplifies in real time.
9. double 32 channel audios switchings according to claim 1 and relay output device, it is characterized in that the power
Amplifier (7) amplifies control to input signal, and current signal is converted to audio signal output by loudspeaker (8).
10. double 32 channel audios switchings as described in claim 1 and relay output device, which is characterized in that actual use
When, input signal enters 32 paths input modules (1), converts electrical current into alternating voltage by R1-R32 resistance；Address control
Molding block (4) uses ISA interface, and address bit is controlled and selected one by one by external control interface (2), while interlock circuit
(5) 1 tunnel is individually monitored every time, and interlocks remaining 31 tunnel；Multi-path choice switching module (3) controls 32 points of inputs by address
Module (4), interlock circuit (5) control pre-process the MAX306 selector in circuit (6) and export 1 tunnel exchange level monitoring signal；A
Potentiometer carries out adjustment of sensitivity to input signal, carries out the undistorted adjusting of small range to input signal；I grades of operational amplifiers pair
Alternating voltage, monitoring signal filtering, II grades of operational amplifiers carry out (10) times amplification in real time to filtered circuit；B potentiometer
The circuit of input power amplifier is adjusted, control is amplified to input signal by power amplifier (7), then by raising
Current signal is converted to audio signal output by sound device (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811151428.0A CN109275072A (en) | 2018-09-29 | 2018-09-29 | Double 32 channel audio switchings and relay output device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811151428.0A CN109275072A (en) | 2018-09-29 | 2018-09-29 | Double 32 channel audio switchings and relay output device |
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| Publication Number | Publication Date |
|---|---|
| CN109275072A true CN109275072A (en) | 2019-01-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811151428.0A Pending CN109275072A (en) | 2018-09-29 | 2018-09-29 | Double 32 channel audio switchings and relay output device |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101230953A (en) * | 2008-01-24 | 2008-07-30 | 深圳东方锅炉控制有限公司 | Pipeline leakage detecting system and pipeline leakage detecting system with remote monitoring |
| CN202869752U (en) * | 2012-08-30 | 2013-04-10 | 南京擎能自动化设备有限公司 | Boiler-tube leakage-detection 32 channel audio control-board card |
| CN202868321U (en) * | 2012-09-26 | 2013-04-10 | 南京擎能自动化设备有限公司 | Audio frequency detection device for enclosed space steam pipeline leakage |
| CN106597897A (en) * | 2016-12-15 | 2017-04-26 | 北京北广科技股份有限公司 | Constant current source multi-channel control interlocking circuit |
| CN106969270A (en) * | 2017-04-07 | 2017-07-21 | 中国科学院地质与地球物理研究所 | The harvester and application method of a kind of detection pipe leakage based on acoustic detection |
-
2018
- 2018-09-29 CN CN201811151428.0A patent/CN109275072A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101230953A (en) * | 2008-01-24 | 2008-07-30 | 深圳东方锅炉控制有限公司 | Pipeline leakage detecting system and pipeline leakage detecting system with remote monitoring |
| CN202869752U (en) * | 2012-08-30 | 2013-04-10 | 南京擎能自动化设备有限公司 | Boiler-tube leakage-detection 32 channel audio control-board card |
| CN202868321U (en) * | 2012-09-26 | 2013-04-10 | 南京擎能自动化设备有限公司 | Audio frequency detection device for enclosed space steam pipeline leakage |
| CN106597897A (en) * | 2016-12-15 | 2017-04-26 | 北京北广科技股份有限公司 | Constant current source multi-channel control interlocking circuit |
| CN106969270A (en) * | 2017-04-07 | 2017-07-21 | 中国科学院地质与地球物理研究所 | The harvester and application method of a kind of detection pipe leakage based on acoustic detection |
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Application publication date: 20190125 |
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