CN102244515B - Universal multi-channel switching value converter - Google Patents
Universal multi-channel switching value converter Download PDFInfo
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- CN102244515B CN102244515B CN 201110058173 CN201110058173A CN102244515B CN 102244515 B CN102244515 B CN 102244515B CN 201110058173 CN201110058173 CN 201110058173 CN 201110058173 A CN201110058173 A CN 201110058173A CN 102244515 B CN102244515 B CN 102244515B
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Abstract
The invention discloses a universal multi-channel switching value converter. Three pins of a three-pin socket connector are connected with the anode and cathode of a power module and a switching value signal respectively. The common terminal of the switching value signal is connected with the negative input end of an optocoupler by a current limiting resistor. A Pi-type filter is connected between the positive and negative input ends of the optocoupler. An open collector is arranged at the output end of the optocoupler, and is connected to 5V by a pull-up resistor. The universal multi-channel switching value converter is highly universal, and can determine a switching value to be converted only by changing the connection statuses of the two socket connectors without changing a hardware structure. The switching value has a value of amplitude which is any value between 15V and 35V and frequency which is any value between 0MHz and 1MHz. The universal multi-channel switching value converter has a simple hardware circuit comprising basic components, does not require any dedicated chip, is low in cost and greatly improves the reliability of the whole system.
Description
Technical field
The present invention relates to a kind of multi-channel switch amount conversion equipment.
Background technology
In industrial control system, usually need to be input to application interface in computer or controller to the digital value in groups of single on/off switch, high/low level or physical quantity of reflection controlled device.The switching value that controlled device produces as the output of limit switch, rotary switch, temperature switch, various button, relay, can be divided into following two kinds: break-make type (passive) switching value, the various switches of reflection controlled device and the switching state of contact; Level-type (active) switching value, the height state of reflection logic level.These switching values are input to computer with the switch acquisition card or controller is processed, usually the switching value of switch acquisition card collection need meet the electrical standard of TTL, DTL compatibility, and above-mentioned break-make type switching value and level-type switching value all do not meet usually, this just need to convert these two kinds of switching values the switching value of the electrical standard that meets TTL, DTL compatibility to a kind of transducer, and isolate with anti-interference process after deliver to the switch acquisition card.
Existing transducer has two kinds, one, with the level-type switching value process photoelectricity isolation processing at scene, eliminate strong electrical control circuit the pulsation that microsystem produces has been disturbed, completed simultaneously level conversion, carry out on this basis filtering and disappear trembling, with the signal output after processing.Two, the break-make type switching value at scene is processed through interface circuit, become the level-type switching value, then through the photoelectricity Isolation with disappear and export after trembling processing.Two kinds of transducers respectively can only be to a kind of conversion the in break-make type switching value and level-type switching value, and versatility is not strong.When needs are changed simultaneously to two kinds of switching values, need to use two kinds of transducers, cost is higher.
In present lot of documents both domestic and external and patent, do not relate to how compatible two kinds of switching values conversion on a transducer.
Summary of the invention
Can not compatible two kinds of switching values change in order to overcome prior art, and complex structure, the deficiency that cost is higher the invention provides a kind of universal multi-channel switch converter, both can change break-make type switching value, again can switching levels type switching value, passage is many simultaneously, cost is low, better performances.
The technical solution adopted for the present invention to solve the technical problems is: comprise power module, three pin connectors, Pi mode filter, current-limiting resistance and optocoupler.Three pins of three pin connectors are connected with both positive and negative polarity and the switching value signal of power module respectively, and switching value signal common port is connected with the negative input end of optocoupler by current-limiting resistance, connect the Pi mode filter between the positive and negative input of optocoupler; The output of optocoupler is the OC door, receives 5V by a pull-up resistor.This device only needs to adjust two pin connectors and whether adds the position that short-circuit block and three pin connectors add short-circuit block when using, and can determine transducer conversion break-make type switching value or level-type switching value.
When conversion break-make type switching value, with power cathode and switching value signal short circuit, two pin connectors add short-circuit block.When switch is closed, the negative pole composition loop of former limit, current-limiting resistance and the power module of the 24V of power module output, two pin connectors, optocoupler, the light-emitting diode current flowing on optocoupler former limit and luminous, thus make also conducting of optical coupling secondary edges, output low level; When switch disconnects, not conducting of loop, also not conducting of optical coupling secondary edges, output high level.Realized the conversion of break-make type switching value to the level-type switching value.
When switching levels type switching value, with switching value signal and optocoupler positive input terminal short circuit, two pin connectors do not add short-circuit block.When switching value was high level, the former limit of optocoupler, current-limiting resistance formed the loop, the light-emitting diode current flowing on optocoupler former limit and luminous, thus make also conducting of optical coupling secondary edges, output low level; When switching value was low level, optocoupler 2, former limit current potential was identical, and the loop no current passes through, also not conducting of optical coupling secondary edges, output high level.
Wherein, the value of current-limiting resistance is 2.5K, and the resistance of pull-up resistor is 15K.Optocoupler has 4 paths, and frequency is more than 1MHz.
The invention has the beneficial effects as follows: highly versatile of the present invention, only needs change the connection status of two connectors, can determine to change which kind of switching value, and not need to change hardware configuration.The amplitude of switching value can be between 15V-35V, and frequency is arbitrary value between 0-1MHz.Hardware circuit of the present invention is simple, and is all some primary elements, need not to add special chip, and cost is low, and the reliability of whole system is greatly improved.
Description of drawings
Fig. 1 is hardware configuration schematic diagram of the present invention,
In figure, 1-produces the power module of 24V, 2-switching value signal input part, and 3-three pin connectors, 4-two pin connectors, the 5-pi mode filter, the 6-current-limiting resistance, the 7-optocoupler, 8-produces the power module of 5V, 9-pull-up resistor.
Embodiment
Comprise that power module, connector, Pi mode filter, current-limiting resistance and optocoupler form.The connector of the 24V of power module output by two pins is connected with the positive input terminal on optocoupler former limit and 1 pin of three pin connectors, negative pole is connected with 3 pin of three pin connectors, the switching value signal is connected with 2 pin of three pin connectors, switching value signal common port is connected with the negative input end of optocoupler by current-limiting resistance, connects the Pi mode filter between the positive and negative input of optocoupler; The output of optocoupler is the OC door, receive 5V by a pull-up resistor, this device only needs to adjust two pin connectors and whether adds the position that short-circuit block and three pin connectors add short-circuit block when using, and can determine transducer conversion break-make type switching value or level-type switching value.
When conversion break-make type switching value, with 2, the 3 pin short circuits of short-circuit block with three pin connectors, two pin connectors add short-circuit block.When switch is closed, 2,3 pin of the former limit of the 24V of power module output, two pin connectors, optocoupler, current-limiting resistance, three pin connectors and the negative pole of power module form the loop, the light-emitting diode current flowing on the former limit of optocoupler and luminous, thus make also conducting of optical coupling secondary edges, output low level; When switch disconnects, not conducting of loop, also not conducting of optical coupling secondary edges, output high level.Realized the conversion of break-make type switching value to the level-type switching value.
When switching levels type switching value, with 1, the 2 pin short circuits of short-circuit block with three pin connectors, two pin connectors do not add short-circuit block.When switching value is high level, 1,2 pin of connector, the former limit of optocoupler, current-limiting resistance form the loop, the light-emitting diode current flowing on optocoupler former limit and luminous, thus make also conducting of optical coupling secondary edges, output low level; When switching value was low level, optocoupler 2, former limit current potential was identical, and the loop no current passes through, also not conducting of optical coupling secondary edges, output high level.
Wherein, the value of current-limiting resistance is 2.5K, and the resistance of pull-up resistor is 15K.Optocoupler has 4 paths, and frequency is more than 1Mhz.
The present invention is further described below in conjunction with drawings and Examples.
Apparatus of the present invention include 24V power module 1, switching value signal input part 2, three pin connector 3, two pin connectors 4, pi mode filter 5, current-limiting resistance 6, optocoupler 7,5V power module 8, pull-up resistor 9.The multi-way switching values ALT-CH alternate channel is arranged in device, and each road ALT-CH alternate channel is dissimilar according to switching value, need carry out different settings.
When conversion break-make type switching value, with 2, the 3 pin short circuits of short-circuit block with three pin connectors 3, two pin connectors 4 add short-circuit block.When switch is closed, 2,3 pins of the former limit of the 24V of power module 1 output, two pin connectors 4, optocoupler 7, current-limiting resistance 6, three pin connectors 3 and the negative pole of power module form the loop, the light-emitting diode current flowing on the former limit of optocoupler and luminous, thus make also conducting of optical coupling secondary edges; When switch disconnects, not conducting of loop, also not conducting of optical coupling secondary edges.Realized the conversion of break-make type switching value to the level-type switching value.Filter 5 has been eliminated the pulsation of switching value in transmitting procedure and has been disturbed.Power module 8 output voltages of the secondary of optocoupler 7 are 5V, and during the secondary conducting, signal output part is connected with ground, output 0V; During not conducting of secondary, signal output part by on move 5V to, thereby completed by the conversion of disconnected type switching value to the level-type switching value of the electrical standard that meets TTL, DTL compatibility.
When switching levels type switching value, with 1, the 2 pin short circuits of short-circuit block with three pin connectors 3, two pin connectors 4 do not add short-circuit block.When switching value is high level, 1,2 pins of three pin connectors, the former limit of optocoupler 7, current-limiting resistance 6 forms the loop, the light-emitting diode current flowing on optocoupler former limit and luminous, thus make also conducting of optical coupling secondary edges; When switching value was low level, optocoupler 2, former limit current potential was identical, and the loop no current passes through, also not conducting of optical coupling secondary edges.Filter has been eliminated the pulsation of switching value in transmitting procedure and has been disturbed.Power module 8 output voltages of optical coupling secondary edges are 5V, and during the secondary conducting, output is connected with ground, output 0V; During not conducting of secondary, output through on move 5V to, thereby completed by the conversion of level-type switching value to the level-type switching value of the electrical standard that meets TTL, DTL compatibility.
Claims (4)
1. universal multi-channel switch converter, comprise power module, three pin connectors, the Pi mode filter, current-limiting resistance and optocoupler, it is characterized in that: three pins of three pin connectors (3) are connected with both positive and negative polarity and the switching value signal P of power module (1) respectively, also be connected in series two pin connectors (4) between the pin of the positive pole of power module (1) and three pin connectors (3), switching value signal common port N is connected by the negative input end of current-limiting resistance with optocoupler (7), optocoupler (7) just, connect Pi mode filter (5) between negative input end, the output of optocoupler (7) is the OC door, receives 5V by a pull-up resistor.
2. universal multi-channel switch converter according to claim 1 is characterized in that: when conversion break-make type switching value, with power cathode and switching value signal short circuit, two pin connectors add short-circuit block.
3. universal multi-channel switch converter according to claim 1, it is characterized in that: when switching levels type switching value, with switching value signal and optocoupler positive input terminal short circuit, two pin connectors do not add short-circuit block.
4. universal multi-channel switch converter according to claim 1, it is characterized in that: the value of described current-limiting resistance is 2.5K, the resistance of pull-up resistor is 15K; Optocoupler has 4 paths, and frequency is more than 1MHz.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN 201110058173 CN102244515B (en) | 2011-03-10 | 2011-03-10 | Universal multi-channel switching value converter |
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| CN 201110058173 CN102244515B (en) | 2011-03-10 | 2011-03-10 | Universal multi-channel switching value converter |
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| CN102244515A CN102244515A (en) | 2011-11-16 |
| CN102244515B true CN102244515B (en) | 2013-06-05 |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103580671B (en) * | 2013-10-24 | 2017-09-19 | 秦皇岛博硕光电设备股份有限公司 | NPN/PNP on-off model converters |
| CN104716950B (en) * | 2015-03-02 | 2018-05-22 | 苏州市职业大学 | A kind of multifunctional signal input isolation circuit |
| CN105116200B (en) * | 2015-09-24 | 2017-11-17 | 深圳市法马新智能设备有限公司 | A kind of detection circuit of compatible switch amount and level amount |
| CN105487417B (en) * | 2015-12-18 | 2018-03-23 | 浙江大华系统工程有限公司 | A kind of switching value output circuit |
| CN105807686B (en) * | 2016-04-05 | 2018-08-10 | 中国船舶重工集团公司第七一二研究所 | A kind of general isolated form On-off signal output module |
| CN109375536A (en) * | 2018-09-27 | 2019-02-22 | 郑州华力信息技术有限公司 | Multifunctional status amount detection module device |
| CN112992619B (en) * | 2021-02-07 | 2022-06-03 | 青岛博宁福田智能交通科技发展有限公司 | Emergency button switch interface and subway floodgate machine |
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| CN2482094Y (en) * | 2001-05-23 | 2002-03-13 | 上海电器科学研究所 | Power supply phase interruption testing device of automatic change-over switch electric appliance |
| CN1725401A (en) * | 2005-06-10 | 2006-01-25 | 天津市百利电气有限公司 | Automatic change-over switch |
| CN101178985A (en) * | 2007-11-09 | 2008-05-14 | 天津市百利电气有限公司 | Automatic change-over and control method with self-diagnosis output function |
| CN201434988Y (en) * | 2009-05-09 | 2010-03-31 | 华通机电集团有限公司 | Automatic transfer switch controller with integrated fire control |
| CN101867309A (en) * | 2010-06-24 | 2010-10-20 | 上海阿卡得电子有限公司 | Univoltage switch status conversion circuit |
| CN202111682U (en) * | 2011-03-10 | 2012-01-11 | 西北工业大学 | Universal multi-channel switch converter |
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2011
- 2011-03-10 CN CN 201110058173 patent/CN102244515B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2482094Y (en) * | 2001-05-23 | 2002-03-13 | 上海电器科学研究所 | Power supply phase interruption testing device of automatic change-over switch electric appliance |
| CN1725401A (en) * | 2005-06-10 | 2006-01-25 | 天津市百利电气有限公司 | Automatic change-over switch |
| CN101178985A (en) * | 2007-11-09 | 2008-05-14 | 天津市百利电气有限公司 | Automatic change-over and control method with self-diagnosis output function |
| CN201434988Y (en) * | 2009-05-09 | 2010-03-31 | 华通机电集团有限公司 | Automatic transfer switch controller with integrated fire control |
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| CN202111682U (en) * | 2011-03-10 | 2012-01-11 | 西北工业大学 | Universal multi-channel switch converter |
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