CN202815566U - Isolated intelligent safety barrier - Google Patents
Isolated intelligent safety barrier Download PDFInfo
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- CN202815566U CN202815566U CN2012205008595U CN201220500859U CN202815566U CN 202815566 U CN202815566 U CN 202815566U CN 2012205008595 U CN2012205008595 U CN 2012205008595U CN 201220500859 U CN201220500859 U CN 201220500859U CN 202815566 U CN202815566 U CN 202815566U
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- explosive area
- relay
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]
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Abstract
The utility model discloses an isolated intelligent safety barrier, and relates to the technical field of intelligent gas safety. The isolated intelligent safety barrier of the utility model comprises a safe region and a danger region. The safe region and the danger region are in signal isolation and power supply isolation through a photoelectric coupler and a relay. The safe region comprises a microprocessor, a safe region communication chip, and a lightning protection module. The danger region comprises a danger region communication chip. The common end of the relay is connected with a storage battery. The charging and discharging processes of the storage battery are controlled by the microprocessor. The storage battery is used to supply power to the danger region by setting the relay to the normally-closed end, and the storage battery is used to performing the charging operation from the safe region through the normally-open end of the relay. According to the isolated intelligent safety barrier of the utility model, the energy entering the danger region can be limited through the signal isolation, the power supply isolation and the energy limitation so as to prevent the situation that excessive energy enters the danger region to cause the explosion of combustible gases in failure conditions, so that the safety of devices in the danger region can be ensured, the hidden dangers can be reduced, and the safety of people's lives and property can be ensured.
Description
Technical field
The utility model relates to intelligent gas safety technique field, particularly a kind of isolated intelligent and safe grid.
Background technology
Safety barrier claims again safe retainer, the safe interface in intrinsic safety loop, it can be between place of safety and explosive area the bi-directional electric signal, and can limit place of safety that barrier for some reason causes to the energy transmission in explosive area.Existing safety barrier is generally Zener type and isolated.
Adopt fastp-acting fuse, current-limiting resistance or pressure limiting diode to limit with the electric flux to input in the Zener type safety barrier circuit, thereby guarantee to output to the energy in explosive area.Its principle is simple, circuit is realized easily, and is cheap, but reason is greatly affected its reliability in using in the defective of himself principle, and limited its range of application.
Isolating safety grid has adopted the circuit structure with input, output and the mutual electrical isolation of power supply three party, meets simultaneously the requirement of intrinsic safety type restriction energy.Compare safely with Zener type, isolating safety grid has outstanding advantage and extensive use more, although its price is a little more than the Zener type safety barrier, from design, construction and installation, debug and be maintained as original consideration, its integrated cost is lower than the Zener type safety barrier on the contrary.Almost adopted bar none isolating safety grid as main intrinsic safe explosion-proof instrument at the engineering site of having relatively high expectations, isolating safety grid has replaced the Zener type safety barrier gradually, has obtained increasingly extensive application in the safety anti-explosive field.
But existing safety barrier working method is single, can only isolate a certain signal, wherein a kind of such as RS485, RS232, switching value, analog quantity, and each safety barrier interface is single, compatibility is not strong, and existing safety barrier does not have lightning protection function, when being responded to thunder, is easy to damage.
The utility model content
The purpose of this utility model is: for existing above-mentioned deficiency in the prior art, the compatible explosive area of a kind of energy multiple interfaces equipment is provided, effectively prevents from controlling the isolated intelligent and safe grid of mainboard and explosive area device damage.
To achieve these goals, the utility model provides following technical scheme:
A kind of isolated intelligent and safe grid comprise place of safety and explosive area, and signal isolation and isolated from power are carried out by photoelectrical coupler and relay in described place of safety and explosive area; The place of safety comprises microprocessor, place of safety communication chip, lightning-protection module; The explosive area comprises the explosive area communication chip;
The common port of described relay is connected with accumulator, and described microprocessor is controlled discharging and recharging of accumulator; Described accumulator is the explosive area power supply by relay set normal-closed end, and described accumulator charges from the place of safety by the Chang Kaiduan of relay;
Described lightning-protection module is delivered to microprocessor with external signal by the place of safety communication chip and carries out Treatment Analysis, and microprocessor carries out signal exchange with signal by the explosive area communication chip by photoelectrical coupler again.
As preferred version of the present utility model, in the above-mentioned isolated intelligent and safe grid, described relay is connected in explosive area LDO(low dropout regulator, low pressure difference linear voltage regulator by the explosive area power supply switch tube) out-put supply.
As preferred version of the present utility model, in the above-mentioned isolated intelligent and safe grid, described lightning-protection module is delivered to place of safety LDO with power supply signal, and place of safety LDO connects relay by the place of safety power supply switch tube.
As preferred version of the present utility model, in the above-mentioned isolated intelligent and safe grid, described explosive area also is provided with switching value interface and the analog quantity interface with the photoelectrical coupler communication connection.
As preferred version of the present utility model, in the above-mentioned isolated intelligent and safe grid, described lightning-protection module comprises siganl thunder-proof device and the secondary lightning protection that is comprised of gas-discharge tube and TVS pipe (Transient Voltage Suppressor, Transient Suppression Diode).
As preferred version of the present utility model, in the above-mentioned isolated intelligent and safe grid, the place of safety communication chip comprises RS232 communication chip and RS485 communication chip.
As preferred version of the present utility model, in the above-mentioned isolated intelligent and safe grid, the explosive area communication chip comprises RS232 communication chip, RS485 communication chip and RS422 communication chip.
In sum, owing to adopted technique scheme, the beneficial effects of the utility model are:
1, whole district's output interface of the isolated intelligent and safe grid peace of the utility model is unified for the RS485 interface, can simplify the communication interface kind; The explosive area can compatible RS485, RS422, the RS232 interface, and can gather simultaneously switching value, analog quantity, has realized the function of compatible explosive area multiple interfaces equipment.
2, the isolated intelligent and safe grid of the utility model can by isolation, limit to signal and power supply, restriction enters the explosive area energy, prevented that macro-energy from entering the explosive area, under failure condition, cause flammable gas explosion, ensure the explosive area device security, reduce potential safety hazard, ensure the safety of people's lives and properties.
3, the two-stage lightning protection of the isolated intelligent and safe grid design of the utility model can effectively prevent the damage of equipment; when being responded to the thunder impact; can be effectively the macro-energy earial drainage to the earth, reduce the pressure that place of safety isolation limit can device when effectively protecting equipment.
Description of drawings:
Fig. 1 is the circuit theory diagrams of the isolated intelligent and safe grid of the utility model.
Fig. 2 is the circuit theory diagrams of the isolated intelligent and safe grid of the utility model embodiment.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in detail.
In order to make the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein only in order to explaining the utility model, and be not used in restriction the utility model.
Embodiment
A kind of isolated intelligent and safe grid as shown in Figure 2, comprise place of safety and explosive area, carry out signal isolation and isolated from power by photoelectrical coupler and relay; The place of safety comprises microprocessor, place of safety communication chip, lightning-protection module, place of safety power supply switch tube and place of safety LDO; The explosive area comprises explosive area communication chip, switching value interface, analog quantity interface, explosive area power supply switch tube and explosive area LDO;
Wherein, the common port of relay is connected with accumulator, and accumulator is powered separately to the explosive area by relay set normal-closed end: relay is connected in explosive area LDO out-put supply through the explosive area power supply switch tube; Battery tension switches to Chang Kaiduan and charges from the place of safety after reducing: power supply signal is delivered to place of safety LDO through lightning-protection module, and place of safety LDO connects relay by the place of safety power supply switch tube; Discharge and recharge by the microprocessor that places the place of safety and control;
The external signal of process lightning-protection module is delivered to microprocessor by the place of safety communication chip and carries out Treatment Analysis, and microprocessor carries out signal exchange with signal by the explosive area communication chip by photoelectrical coupler again; The explosive area arranges switching value interface and analog quantity interface and photoelectrical coupler communication connection;
Described lightning-protection module comprises siganl thunder-proof device and the secondary lightning protection that is comprised of gas-discharge tube and TVS pipe; The place of safety communication chip comprises place of safety RS232 communication chip and place of safety RS485 communication chip; The explosive area communication chip comprises explosive area RS232 communication chip, explosive area RS485 communication chip, explosive area RS422 communication chip.
Principle of work of the present utility model: microprocessor receives the external signal through lightning-protection module, and the lightning-protection module Main Function is for when being responded to thunder and impact, can be effectively the macro-energy earial drainage to the earth, reduce simultaneously place of safety isolation limit energy device stress; After microprocessor processes is analyzed, switching accumulator powers to the explosive area, microprocessor sends to explosive area equipment by photoelectrical coupler with communication signal simultaneously, after signal is finished alternately, cut off accumulator to the power switch in explosive area, the microprocessor handle is passed back with explosive area device talk result, finishes communication flow.
The above only is preferred embodiment of the present utility model; not in order to limit the utility model; all any modifications of within spirit of the present utility model and principle, doing, be equal to and replace and improvement etc., all should be included within the protection domain of the present utility model.
Claims (7)
1. isolated intelligent and safe grid comprise place of safety and explosive area, it is characterized in that, signal isolation and isolated from power are carried out by photoelectrical coupler and relay in described place of safety and explosive area; The place of safety comprises microprocessor, place of safety communication chip, lightning-protection module; The explosive area comprises the explosive area communication chip;
The common port of described relay is connected with accumulator, and described microprocessor is controlled discharging and recharging of accumulator; Described accumulator is the explosive area power supply by relay set normal-closed end, and described accumulator charges from the place of safety by the Chang Kaiduan of relay;
Described lightning-protection module is delivered to microprocessor with external signal by the place of safety communication chip and carries out Treatment Analysis, and microprocessor carries out signal exchange with signal by the explosive area communication chip by photoelectrical coupler again.
2. isolated intelligent and safe grid according to claim 1 is characterized in that, described relay is connected in explosive area LDO out-put supply by the explosive area power supply switch tube.
3. isolated intelligent and safe grid according to claim 2 is characterized in that, described explosive area also is provided with switching value interface and the analog quantity interface with the photoelectrical coupler communication connection.
4. isolated intelligent and safe grid according to claim 1 is characterized in that described lightning-protection module is delivered to place of safety LDO with power supply signal, and place of safety LDO connects relay by the place of safety power supply switch tube.
5. isolated intelligent and safe grid according to claim 4 is characterized in that, described lightning-protection module comprises siganl thunder-proof device and the secondary lightning protection that is comprised of gas-discharge tube and TVS pipe.
6. isolated intelligent and safe grid according to claim 1 is characterized in that, the place of safety communication chip comprises RS232 communication chip and RS485 communication chip.
7. isolated intelligent and safe grid according to claim 1 is characterized in that, the explosive area communication chip comprises RS232 communication chip, RS485 communication chip and RS422 communication chip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012205008595U CN202815566U (en) | 2012-09-28 | 2012-09-28 | Isolated intelligent safety barrier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012205008595U CN202815566U (en) | 2012-09-28 | 2012-09-28 | Isolated intelligent safety barrier |
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| Publication Number | Publication Date |
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| CN202815566U true CN202815566U (en) | 2013-03-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2012205008595U Expired - Lifetime CN202815566U (en) | 2012-09-28 | 2012-09-28 | Isolated intelligent safety barrier |
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| CN (1) | CN202815566U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103543679A (en) * | 2013-10-28 | 2014-01-29 | 深圳万讯自控股份有限公司 | Intelligent type resistance signal isolated gate |
| CN104866449A (en) * | 2014-02-25 | 2015-08-26 | 北京中安科创科技发展有限公司 | Intrinsic safety type USB (universal serial bus) interface circuit for electronic devices in flammable and combustible places |
| CN106851048A (en) * | 2017-01-10 | 2017-06-13 | 北京中安科创科技发展有限公司 | A kind of analog video signal isolation circuit of explosive atmosphere electrical installation |
| CN111463748A (en) * | 2020-05-11 | 2020-07-28 | 浙江三一装备有限公司 | Crane and lightning protection method for crane |
| CN111857077A (en) * | 2020-07-31 | 2020-10-30 | 浙江中控技术股份有限公司 | RS-485 isolating circuit and safety barrier |
-
2012
- 2012-09-28 CN CN2012205008595U patent/CN202815566U/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103543679A (en) * | 2013-10-28 | 2014-01-29 | 深圳万讯自控股份有限公司 | Intelligent type resistance signal isolated gate |
| CN104866449A (en) * | 2014-02-25 | 2015-08-26 | 北京中安科创科技发展有限公司 | Intrinsic safety type USB (universal serial bus) interface circuit for electronic devices in flammable and combustible places |
| CN104866449B (en) * | 2014-02-25 | 2018-10-12 | 北京中安科创科技发展有限公司 | A kind of intrinsic safety type usb circuit for combustible and explosive area electronic equipment |
| CN106851048A (en) * | 2017-01-10 | 2017-06-13 | 北京中安科创科技发展有限公司 | A kind of analog video signal isolation circuit of explosive atmosphere electrical installation |
| CN106851048B (en) * | 2017-01-10 | 2023-07-21 | 北京中安科创科技发展有限公司 | Analog video signal isolation circuit of electrical equipment for explosive environment |
| CN111463748A (en) * | 2020-05-11 | 2020-07-28 | 浙江三一装备有限公司 | Crane and lightning protection method for crane |
| CN111857077A (en) * | 2020-07-31 | 2020-10-30 | 浙江中控技术股份有限公司 | RS-485 isolating circuit and safety barrier |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: No. 536, Section 1, airport 1st Road, Shuangliu Southwest Airport, Chengdu, Sichuan 610211 Patentee after: Chengdu Qianjia Technology Co.,Ltd. Address before: No. 536, Section 1, airport 1st Road, Shuangliu Southwest Airport, Chengdu, Sichuan 610211 Patentee before: Chengdu Qianjia Technology Co.,Ltd. |
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| CP01 | Change in the name or title of a patent holder | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130320 |
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| CX01 | Expiry of patent term |