CN2513116Y - Location detection system for loud speaker fault - Google Patents
Location detection system for loud speaker fault Download PDFInfo
- Publication number
- CN2513116Y CN2513116Y CN 01278343 CN01278343U CN2513116Y CN 2513116 Y CN2513116 Y CN 2513116Y CN 01278343 CN01278343 CN 01278343 CN 01278343 U CN01278343 U CN 01278343U CN 2513116 Y CN2513116 Y CN 2513116Y
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- detection
- detection module
- speaker
- loudspeaker
- fault
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Abstract
The utility model relates to a position detection system for loud speaker fault, comprising a detection main engine, a detection bus and a detection module; wherein, the detection main engine is connected with the detection module through the detection bus, and the detection module is connected with the detected speaker or speaker unit; the detection main engine is also connected with the computer through a data communication interface. The utility model is capable of carrying out the manual, the automatic and the positioning detection types, creating the advanced detection means for the fault detection and the maintenance of the speaker subsystem of the public address system, greatly reducing the maintenance workload. The system is capable of detecting three statuses as open circuit, short circuit and normal of the speaker and the impedance converter which is connected with the speaker, and is also capable of detecting whether the communication status of the module is in good order; the position detection system for loud speaker fault is suitable for being used in the fault positioning detection of the speaker subsystem of the public address system which is arranged at railway stations, the underground, the air port and the marketplace, etc.
Description
Technical field
The utility model relates to a kind of pick-up unit, particularly a kind of loudspeaker faults position detecting system.
Background technology
All be provided with large-scale broadcast system speaker subsystem in railway station, subway, airport, market etc.But, present fault detect and maintenance for above-mentioned wired broadcast system speaker subsystem, the very convenient well solution of neither one also, if can not know in concrete place that loudspeaker where is out of joint, so all be pretty troublesome thing to the maintenance of broadcast system loudspeaker and maintenance.
Summary of the invention
Technical problem to be solved in the utility model is that a kind of loudspeaker faults position detecting system that can carry out fault detect and maintenance very easily to the wired broadcast system speaker subsystem is provided.
The technical scheme that the utility model adopted is: the loudspeaker faults position detecting system is provided with and detects main frame, testbus, detection module and constitute jointly.Detect main frame and link to each other with detection module by testbus, detection module links to each other with detected loudspeaker.
The utility model can implement manually, automatically, the detection and localization mode for the fault detect of wired broadcast system speaker subsystem with safeguard and created advanced detection means, greatly reduces maintenance workload.Native system can detect open circuit, short circuit, normal three kinds of states of the impedance transformer that loudspeaker is connected with loudspeaker, but also whether the communications status of detection module is normal.Be applicable to that railway station, subway, airport, market etc. all are provided with the localization of fault detection of large-scale broadcast system speaker subsystem.
Description of drawings
Fig. 1 is the one-piece construction synoptic diagram of native system
Fig. 2 is the structural representation that detects main frame
Fig. 3 is the electrical block diagram of detection module
Embodiment
Provide specific embodiment below in conjunction with accompanying drawing, further specify the utility model and how to realize.
As shown in Figure 1, the loudspeaker faults position detecting system, include and detect main frame 1, testbus 2, detection module 3 and constitutes jointly, detect main frame 1 and pass through testbus 2 and link to each other with detection module 3, detection module 3 links to each other with detected loudspeaker (or loudspeaker unit) 5.Testbus 2 adopts nonpolarity two buses.Nonpolarity two buses are used for to detection module 3 power supplies, detect main frame 1 by nonpolarity two bus feeding classifications transmission detection signal, have realized the fault detect to loudspeaker.Detect main frame 1 and be provided with the detection loop, detect the loop and can establish more than 1, each detection loop is connected to the detection module 3 more than 1.Detect main frame 1 in the present embodiment and be provided with eight detection loops, each detects loop and is connected to 128 detection modules 3.Detecting main frame 1 also can be connected with computing machine by serial communication interface.
As shown in Figure 2, detect main frame 1 and include single-chip microcomputer, display, keyboard, data communication interface (present embodiment employing serial communication interface), electrically-erasable memory, codec, demultplexer, power signal source, multi-channel switcher and power supply, display wherein, keyboard, serial communication interface, electrically-erasable memory, codec, power signal source, all have with single-chip microcomputer and link to each other, codec links to each other with demultplexer again, demultplexer links to each other with detection module 3 by each transmitting-receiving driving circuit and testbus 2, power signal source links to each other with detection module 3 by multi-channel switcher, and power supply is powered to whole detection system.Power signal source adopts fixedly ultrasonic frequency oscillator, to avoid detection noise.
As shown in Figure 3, detection module 3 is by diode D1～D4, stabilivolt D5, D6, resistance R 1～R5, capacitor C 1, triode T1, T2, operational amplifier U4a, U4b, coding circuit, decoding circuit, code switch, impedance transformer, the detection integrated package constitutes, wherein, diode D1～D4 forms bridge rectifier circuit, the 1st of bridge rectifier circuit, 2 two ends connect from detecting the testbus 2 that main frame 1 is come, the 4th end ground connection, the 3rd end connects the collector of triode T1 by resistance R 1, the collector of triode T1 is also respectively by stabilivolt D5, capacitor C 1 ground connection, also connect the base stage of triode T2 by the polyphone of resistance R 2 and stabilivolt D6, the collector of triode T2 connects the inverting input of operational amplifier U4a, and the base stage of triode T1 connects scrambler by resistance R 3, triode T1, the emitter of T2 is ground connection all, another termination decoding circuit of operational amplifier U4a, decoding circuit connects coding circuit and code switch again respectively, and coding circuit also links to each other with the end of operational amplifier U4b, and the normal phase input end of operational amplifier U4b connects power Vcc by resistance R 4 respectively, by resistance R 5 ground connection, its inverting input connects impedance transformer by detecting integrated package, impedance transformer one end links to each other with detection main frame 1, the received power signal, and the other end is connected with loudspeaker 5.
In the present embodiment: the singlechip CPU model is 89C52; The model of serial communication interface is MAX491; The electricity erasable memorizer model is X25165; The scrambler model is UB5026; The model of demoder is UB5028; The model of demultplexer and multi-channel switcher is 4051; The model that detects integrated package is J014; The model of operational amplifier is LM124.
The principle of work of native system is: detection module 3 links to each other with loudspeaker 5 or is contained in its unit box, and loudspeaker 5 links to each other with detection module 3 with impedance transformer, and detection main frame 1 can be chosen wantonly manually, automatic, detection and localization mode.Code switch on the detection module 3 can be module and compiles a number address code.During detection, send power detection signal 4-6 second by 1 pair of service area of main frame earlier, be fed to loudspeaker 5 or loudspeaker unit through broadcast system audio power cable, detection module 3 detects loudspeaker 5 and impedance transformer duty; After the power detection signal stops to send, send address coding signal successively by Single-chip Controlling, address coding signal is sent to the detection module 3 inquiry loudspeakers of each assigned address or the duty of loudspeaker unit through the transmitting-receiving driving circuit by testbus, beams back the detected state coded signal after the processing and judges that by single-chip microcomputer identification the back shows on display screen.
Detecting main frame 1 also can upload fault-signal through null modem cable according to the requirement of main control computer.
Claims (5)
1. loudspeaker faults position detecting system, it is characterized in that it being by detecting main frame (1), testbus (2), the common formation of detection module (3), detect main frame (1) and link to each other with detection module (3) by testbus (2), detection module (3) links to each other with detected loudspeaker (5).
2. loudspeaker faults position detecting system according to claim 1 is characterized in that testbus (2) adopts nonpolarity two buses.
3. loudspeaker faults position detecting system according to claim 1 is characterized in that detecting main frame (1) and is provided with the detection loop.
4. loudspeaker faults position detecting system according to claim 3 is characterized in that each detects the loop and is connected to detection module.
5. loudspeaker faults position detecting system according to claim 1, it is characterized in that detecting main frame (1) and include single-chip microcomputer, display, keyboard, data communication interface, storer, codec, demultplexer, power signal source, multi-channel switcher and power supply, display wherein, keyboard, data communication interface, storer, codec, power signal source all links to each other with single-chip microcomputer, codec links to each other with demultplexer again, demultplexer links to each other with detection module (3) by each transmitting-receiving driving circuit and testbus (2), power signal source links to each other with detection module (3) by multi-channel switcher, and power supply is powered to whole detection system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01278343 CN2513116Y (en) | 2001-12-14 | 2001-12-14 | Location detection system for loud speaker fault |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01278343 CN2513116Y (en) | 2001-12-14 | 2001-12-14 | Location detection system for loud speaker fault |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2513116Y true CN2513116Y (en) | 2002-09-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01278343 Expired - Fee Related CN2513116Y (en) | 2001-12-14 | 2001-12-14 | Location detection system for loud speaker fault |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2513116Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101094040B (en) * | 2006-06-21 | 2011-10-19 | 天津市明珠电器公司 | Carrier wave feedback circuit for wire broadcasting terminals in amplitude modulation format or frequency modulation format |
| CN103442323A (en) * | 2013-09-03 | 2013-12-11 | 中铁六局集团有限公司 | Playing unit with fault detection function and public broadcast system with same |
| CN104077900A (en) * | 2013-03-29 | 2014-10-01 | 北京谊安医疗系统股份有限公司 | Medical instrument alarm apparatus starting detection device and starting detection method |
| CN104902405A (en) * | 2014-04-03 | 2015-09-09 | 宝鸡市凌云机电设备制造有限公司 | High-power matrix loudspeaker |
-
2001
- 2001-12-14 CN CN 01278343 patent/CN2513116Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101094040B (en) * | 2006-06-21 | 2011-10-19 | 天津市明珠电器公司 | Carrier wave feedback circuit for wire broadcasting terminals in amplitude modulation format or frequency modulation format |
| CN104077900A (en) * | 2013-03-29 | 2014-10-01 | 北京谊安医疗系统股份有限公司 | Medical instrument alarm apparatus starting detection device and starting detection method |
| CN103442323A (en) * | 2013-09-03 | 2013-12-11 | 中铁六局集团有限公司 | Playing unit with fault detection function and public broadcast system with same |
| CN103442323B (en) * | 2013-09-03 | 2016-08-24 | 中铁六局集团有限公司 | The broadcast unit of a kind of tape jam detection and the Public Address system containing this element |
| CN104902405A (en) * | 2014-04-03 | 2015-09-09 | 宝鸡市凌云机电设备制造有限公司 | High-power matrix loudspeaker |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |