CN202771273U - Fiber liquid level switch controller - Google Patents
Fiber liquid level switch controller Download PDFInfo
- Publication number
- CN202771273U CN202771273U CN201220487075.3U CN201220487075U CN202771273U CN 202771273 U CN202771273 U CN 202771273U CN 201220487075 U CN201220487075 U CN 201220487075U CN 202771273 U CN202771273 U CN 202771273U
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Abstract
The utility model relates to a control device of a fiber switch applied in various sanitary, toxic, corrosive medium and explosive gas dangerous places and a control method thereof. A fiber liquid level switch controller comprises a single chip microcomputer and a sound and light alarm control unit. The single chip microcomputer drives a light source module to send a fiber signal through a light source driving circuit. The fiber signal is transmitted to an optical receiver through an optical collimator. The fiber signal received by the optical receiver is converted into an early warning and alarm signal through a voltage amplification module and a signal shaping circuit, and the early warning and alarm signal is sent to the single chip microcomputer back to carry out AD sampling and detecting. The single chip microcomputer carries out sound and light early warning and alarm prompting through the sound and light alarm control unit, an indicating lamp, a buzzer and an alarm music chip module. The sound and light alarm control unit, the indicating lamp, the buzzer and the alarm music chip module are electrically connected with the single chip microcomputer.
Description
Technical field
The utility model relates to a kind of control device and control method that is applicable at the fiber switch of various health, poisonous, Korrosionsmedium and damp hazardous area.
Background technology
Used optical fiber liquid level on-off controller in the market, first, output signal single (switching value signal) and output quantity only have 2 groups (often open, normally closed each one group), and be more single with the interlock mode of other system; The second, there are not signal of communication, 4～20mA signal, so that be difficult to realize digital management; Three, the optical attenuation that docks into light signal of this series products requires height, this just caused and the optical fiber liquid level switch between cable length limited, maximum tens meters, in case the transmission cable light loss increase so that job insecurity causes and can't use when serious.Four, all electron devices and optical device together encapsulate, in case there is fault just can't keep in repair, can only change.The 5th, one group of optical-path interface, so that integrated lower, there is not redundancy.For above-mentioned reasons, this series products exists that fault is many, inconvenient maintenance, the working service cost is high, serviceable life is low, is unfavorable for integrated, digitizing.
Summary of the invention
The purpose of this utility model is to avoid the deficiencies in the prior art to provide a kind of can be converted to light signal electric signal and according to optical fiber liquid level on-off controller and the method for signal alarm.
For achieving the above object, the technical scheme that the utility model is taked is: a kind of optical fiber liquid level on-off controller, comprise single-chip microcomputer, the sound and light alarm control module, described single-chip microcomputer sends fiber-optic signal by light source driving circuit driving light source module, fiber-optic signal is sent to optical receiver by optical collimator with fiber-optic signal, the fiber-optic signal that optical receiver receives changes light signal into early warning, warning electric signal by voltage amplification module and signal transformation circuit, and early warning, warning electric signal are sent it back single-chip microcomputer carries out AD sampling and detect; Single-chip microcomputer carries out acousto-optic early warning, alarm by sound and light alarm control module, pilot lamp, hummer and alarm music chip module, and described sound and light alarm control module, pilot lamp, hummer and alarm music chip module all are electrically connected with single-chip microcomputer.
Further, also include for carrying out the relay control signal module of acoustic-optic alarm with extraneous audible-visual annunciator, described relay control signal module is electrically connected with single-chip microcomputer.
Further, also include DA modular converter and 4-20mA signal output module for the output of single-chip microcomputer detection signal, DA modular converter and 4-20mA signal output module are electrically connected with described single-chip microcomputer.
Further, also include be used to making the user carry out the RS485 signal conversion module of upper computer software configuration according to different demands, described single-chip microcomputer is electrically connected by RS485 signal conversion module and host computer.
Further, described optical fiber liquid level on-off controller is arranged in the explosion-proof tank, and its control panel is arranged on the explosion-proof tank.
Further, be provided with lead-out terminal row and power switch and the socket of key panel and pilot lamp, light filler adapter, described single-chip microcomputer at described control panel.
Described control panel comprises forward and backward control panel, and plate is provided with key panel 18 and pilot lamp 10 in front.Pilot lamp 10 comprises early warning, warning, fault, communication, power supply, reaches the noise reduction pilot lamp, and be arranged on the front panel of described explosion-proof tank, described key panel 18 also is arranged on the front panel of described explosion-proof tank, and panel is provided with mute button 18-1 and reset button 18-2.
Be provided with lead-out terminal row 20 and power switch 21 and the socket 22 of light filler adapter 19, described single-chip microcomputer at the rear panel of described explosion-proof tank.
The beneficial effects of the utility model are:
1. optical fiber liquid level controller optical signal interface of the present utility model has many groups, can realize very easily that instrument can be connected with a plurality of optical fiber type level switches, realizes control.Because interface is many, amount of redundancy is large, so that long service life;
2. the output signal kind is many, such as signals such as 4～20mA, switching value, RS485, also can increase output signal according to client's requirement.So, other system interlink mode is more flexible.Easily realize digital management;
3. low to the attenuated optical signal requirement, the length that is connected optical cable with the optical fiber type fluid level controller reaches more than 1000 meters;
4. the setting of pilot lamp is convenient to observe the duty of instrument.
5. adopt high-grade explosion-proof tank, namely consider that field instrument is installed and the basis of instrument self structure on, select the suitable explosion-proof tank of structure, whole controller is placed in one, so that the utility model product reaches is explosion-proof, anticorrosion, the requirement of lightning protection.And to the fiber switch controller, aspect power supply, accomplish the designs such as Anti-surging, interference, the working stability that guaranteed product.
Description of drawings:
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the principle schematic of the utility model fiber-optic signal transmission;
Fig. 3 is the utility model explosion-proof tank front-panel structure schematic diagram;
Fig. 4 is the utility model explosion-proof tank rear panel structure schematic diagram.
Embodiment
Below principle of the present utility model and feature are described, institute only gives an actual example and to be used for explanation the utility model, is not be used to limiting scope of the present utility model.
Embodiment 1: a kind of optical fiber liquid level on-off controller, comprise single-chip microcomputer 1, sound and light alarm control module 2, described single-chip microcomputer 1 sends fiber-optic signal by light source driving circuit 3 driving light source modules 4, fiber-optic signal is sent to optical receiver 6 by optical collimator 5 with fiber-optic signal, the fiber-optic signal that optical receiver 6 receives changes light signal into early warning, warning electric signal by voltage amplification module 7 and signal transformation circuit 8, and early warning, warning electric signal are sent it back single-chip microcomputer 1 carries out AD sampling and detect; Single-chip microcomputer carries out acousto-optic early warning, alarm by sound and light alarm control module 2, pilot lamp 10, hummer 9 and alarm music chip module 11, and described sound and light alarm control list 2, pilot lamp 10, hummer 9 and alarm music chip 11 modules all are electrically connected with single-chip microcomputer 1.
Also include for carrying out relay control signal module 13 and the relay drive circuit 19 of acoustic-optic alarm with extraneous audible-visual annunciator, described relay control signal module 13 and relay drive circuit 19 are electrically connected with single-chip microcomputer 1.Also include DA modular converter 14 and 4-20mA signal output module 15 for the output of single-chip microcomputer detection signal, DA modular converter 14 and 4-20mA signal 15 output modules are electrically connected with described single-chip microcomputer 1.Also include be used to the RS485 signal conversion module 16 that makes the user carry out the upper computer software configuration according to different demands, described single-chip microcomputer 1 is electrically connected with host computer 17 by RS485 signal conversion module 16.
Described optical fiber liquid level on-off controller is arranged in the explosion-proof tank, is provided with key panel 18 and pilot lamp 10 at explosion-proof tank.Pilot lamp 10 comprises early warning, warning, fault, communication, power supply, reaches the noise reduction pilot lamp, and be arranged on the front panel of described explosion-proof tank, described key panel 18 also is arranged on the front panel of described explosion-proof tank, and panel is provided with mute button 18-1 and reset button 18-2.
Be provided with lead-out terminal row 20 and power switch 21 and the socket 22 of light filler adapter 19, described single-chip microcomputer at the rear panel of described explosion-proof tank.
The control procedure of the optical fiber liquid level on-off controller that the utility model provides is:
After the light path that fiber-optic signal that light source driving circuit 3 driving light source modules 4 send is sent to fiber-optic signal by optical collimator 5 optical receiver 6 is partly cut off, single-chip microcomputer 1 is namely sampled and is detected the early warning electric signal, namely carries out early warning by sound and light alarm control module 2 control hummers 9 and pilot lamp 10;
After the light path that fiber-optic signal that light source driving circuit 3 driving light source modules 4 send is sent to fiber-optic signal by optical collimator 5 optical receiver 6 is thoroughly cut off, single-chip microcomputer 1 is namely sampled and is detected the warning electric signal, namely drives loudspeaker 12 and pilot lamp 10 warnings by sound and light alarm control module 2 control alarm music chip modules 11;
When light source driving circuit 3, light source module 4, collimating apparatus 5, when optical receiver 6 breaks down, single-chip microcomputer 1 is namely sampled and is detected fault-signal, namely controls pilot lamp 10 prompting faults.
The above only is preferred embodiment of the present utility model, and is in order to limit the utility model, not all within spirit of the present utility model and principle, any modification of doing, is equal to replacement, improvement etc., all should be included within the protection domain of the present utility model.
Claims (6)
1. an optical fiber liquid level on-off controller comprises single-chip microcomputer, and the sound and light alarm control module is characterized in that:
Described single-chip microcomputer sends fiber-optic signal by light source driving circuit driving light source module, fiber-optic signal is sent to optical receiver by optical collimator with fiber-optic signal, the fiber-optic signal that optical receiver receives changes light signal into early warning, warning electric signal by voltage amplification module and signal transformation circuit, and early warning, warning electric signal are sent it back single-chip microcomputer carries out AD sampling and detect; Single-chip microcomputer carries out acousto-optic early warning, alarm by sound and light alarm control module, pilot lamp, hummer and alarm music chip module, and described sound and light alarm control module, pilot lamp, hummer and alarm music chip module all are electrically connected with single-chip microcomputer.
2. optical fiber liquid level on-off controller as claimed in claim 1 is characterized in that: also include for carrying out the relay control signal module of acoustic-optic alarm with external light crossing-signal, described relay control signal module is electrically connected with single-chip microcomputer.
3. optical fiber liquid level on-off controller as claimed in claim 1, it is characterized in that: also include DA modular converter and 4-20mA signal output module for the output of single-chip microcomputer detection signal, DA modular converter and 4-20mA signal output module are electrically connected with described single-chip microcomputer.
4. optical fiber liquid level on-off controller as claimed in claim 1, it is characterized in that: also include be used to making the user carry out the RS485 signal conversion module of upper computer software configuration according to different demands, described single-chip microcomputer is electrically connected with host computer by the RS485 signal conversion module.
5. such as the arbitrary described optical fiber liquid level on-off controller of claim 1 to 4, it is characterized in that: described optical fiber liquid level on-off controller is arranged in the explosion-proof tank, and its control panel is arranged on the explosion-proof tank.
6. optical fiber liquid level on-off controller as claimed in claim 5 is characterized in that: the lead-out terminal row and power switch and the socket that are provided with key panel and pilot lamp, light filler adapter, described single-chip microcomputer at described control panel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220487075.3U CN202771273U (en) | 2012-09-23 | 2012-09-23 | Fiber liquid level switch controller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220487075.3U CN202771273U (en) | 2012-09-23 | 2012-09-23 | Fiber liquid level switch controller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202771273U true CN202771273U (en) | 2013-03-06 |
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ID=47777836
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201220487075.3U Expired - Lifetime CN202771273U (en) | 2012-09-23 | 2012-09-23 | Fiber liquid level switch controller |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202771273U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108389604A (en) * | 2018-03-29 | 2018-08-10 | 眉山麦克在线设备股份有限公司 | Positive pressure purges explosion-proof control system |
-
2012
- 2012-09-23 CN CN201220487075.3U patent/CN202771273U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108389604A (en) * | 2018-03-29 | 2018-08-10 | 眉山麦克在线设备股份有限公司 | Positive pressure purges explosion-proof control system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130306 |