CN102436209B - Programmable logic controller (PLC) compatible with various input voltages - Google Patents
Programmable logic controller (PLC) compatible with various input voltages Download PDFInfo
- Publication number
- CN102436209B CN102436209B CN201110423016XA CN201110423016A CN102436209B CN 102436209 B CN102436209 B CN 102436209B CN 201110423016X A CN201110423016X A CN 201110423016XA CN 201110423016 A CN201110423016 A CN 201110423016A CN 102436209 B CN102436209 B CN 102436209B
- Authority
- CN
- China
- Prior art keywords
- dividing potential
- potential drop
- input
- resistance
- circuit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Programmable Controllers (AREA)
Abstract
The invention discloses a programmable logic controller (PLC) compatible with various input voltages. The PLC comprises voltage division input circuits, an isolation device, an internal circuit and at least two groups of terminals for adaptively inputting a plurality of input voltages, wherein the at least two groups of terminals are connected with at least two groups of voltage division input circuits with different voltage division; the voltage division input circuits are electrically connected with the isolation device; and the isolation device are connected in the internal circuit. By the PLC compatible with the various input voltages, various standard input voltages can be compatible, the circuit has a stable structure, and the cost is easy to control; and the input flexibility is improved, and the adaptability is high.
Description
Technical field
The present invention relates to the Programmable control technology field, relate in particular to a kind of PLC (Programmable Logic Controller, programmable logic controller (PLC)) controller of compatible various input voltage.
Background technology
Programmable logic controller (PLC) is a kind of automatic control device for controlling in real time, and it is widely used in industrial control field.PLC can be divided into Large PLC, Medium PLC and small PLC according to the quantity of its input port and output port.
Existing PLC controller and expansion input/output module thereof are unreasonable because of circuit structure design, have certain defect.For example, the normal voltage of existing PLC controller and the input of expansion input/output module thereof is single preset value, as 5V, 12V or 24V etc.; After the PLC controller was completed, its normal voltage also determined accordingly, and can't change, and namely port is merely able to receive a kind of input of normal voltage.
In concrete enforcement, as the input of carrying out voltage not according to this normal voltage, may damage PLC controller and expansion input/output module thereof.For solving this technical problem, existing PLC controller and expansion input/output module thereof are mainly changed after (as transformer) is converted into the normal voltage that port can receive and are inputted by input voltage, not only be subject to environment, and cost is higher.
Existing PLC controller and expansion input/output module thereof are difficult to the input voltage of compatible multistandard, and the input dirigibility is not high.
Summary of the invention
Technical matters to be solved by this invention is, a kind of PLC controller of compatible various input voltage is provided, input voltage that can compatible other multiple standards, and circuit structure is stable, is easy to cost control; Improved the dirigibility of input, adaptability is extensive.
In order to solve the problems of the technologies described above, embodiments of the invention provide a kind of PLC controller of compatible various input voltage, comprise that dividing potential drop input circuit, spacer assembly, internal circuit and at least two groups are used for the terminal of the different input voltages of adaptive input;
Arbitrary group of described terminal connects described dividing potential drop input circuit, and described dividing potential drop input circuit is electrically connected to described spacer assembly, in the described internal circuit of described spacer assembly access;
Described spacer assembly comprises respectively optocoupler (T) or the digital isolator that is connected with described dividing potential drop input circuit (32) with described internal circuit (1);
Described at least two group terminals (5) are set to be arranged above and below, perhaps described at least two group terminals (5) are arranged as a row, the input voltage by arbitrary group of described terminal (5) input after described dividing potential drop input circuit (32) dividing potential drop with described spacer assembly conducting.
Preferably, described dividing potential drop input circuit comprises the resistive element that at least one is in parallel with described spacer assembly or connect.
Preferably, described resistive element comprises the first resistance that is in series with described optocoupler and/or the second resistance that is in parallel with described optocoupler.
Preferably, the resistance of described the first resistance and/or described the second resistance is set to fixed value.
Preferably, described dividing potential drop input circuit also comprises electric capacity, and described the first resistance is connected with described capacitances in series, and described the second resistance is connected in parallel on the two ends of described electric capacity.
the PLC controller of compatible various input voltage provided by the present invention, because the PLC controller comprises at least two group terminals for the different input voltages of adaptive input, make PLC controller and expansion input/output module thereof when with other equipment, interconnecting, do not need to use electric pressure converter just can be converted to the normal voltage that PLC controller and expansion input/output module thereof can receive, input voltage that can compatible other multiple standards, because the structure of dividing potential drop input circuit arranges relatively fixing, need not to change the wherein resistance of resistive element, circuit structure is stable, be easy to cost control, improved the dirigibility of input, adaptability is extensive.
Description of drawings
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, below will the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the external structure schematic diagram of embodiment one of the PLC controller of the compatible various input voltage of the embodiment of the present invention;
Fig. 2 is the structural representation of the internal circuit that is connected with terminal of the PLC controller of the compatible various input voltage of the embodiment of the present invention;
Fig. 3 is the external structure schematic diagram of embodiment two of the PLC controller of the compatible various input voltage of the embodiment of the present invention.
Embodiment
Below with reference to accompanying drawing, the preferred embodiments of the present invention are described.
Referring to Fig. 1, the embodiment of the present invention provides a kind of PLC controller of compatible various input voltage, and the PLC controller of described compatible various input voltage comprises that at least two component pressure amounts different dividing potential drop input circuit 32, spacer assembly, internal circuit 1 and at least two groups are used for the terminal 5 of the different input voltages of adaptive input;
Arbitrary group of described terminal 5 connects described dividing potential drop input circuit 32, and described dividing potential drop input circuit 32 is electrically connected to described spacer assembly, in the described dividing potential drop input circuit 32 of described spacer assembly access.
Below describe the compatible various input voltage of terminal 5 in detail with the structure between the first terminal 51 and coupled internal circuit and how to realize.Referring to Fig. 2, internal circuit 1 is the core processing module of PLC controller and expansion input/output module thereof, and the operating voltage of the internal circuit 1 of the PLC controller of compatible various input voltage of the present invention is by 32 inputs of dividing potential drop input circuit.Dividing potential drop input circuit 32 is the circuit that connect spacer assembly, and wherein, the conducting of spacer assembly will make dividing potential drop input circuit 32 be electrically connected to (being of coupled connections, non-direct electrical connection) with internal circuit 1.The voltage of 32 pairs of internal circuits of dividing potential drop input circuit, 1 output can be configured according to the actual needs.In enforcement, the magnitude of voltage of 32 pairs of internal circuit 1 output voltages of dividing potential drop input circuit does not limit.
In the preferred embodiments of the present invention, dividing potential drop input circuit 32 comprises the 3rd resistance R 3 and filtering part, in internal circuit 1 access dividing potential drop input circuit 32.Wherein, from an end of the dividing potential drop input circuit 32 high potentials optocoupler T that connects respectively, the 3rd rear ground connection of resistance R 3.During concrete enforcement, when the spacer assembly conducting, dividing potential drop input circuit 32 is controlled to be internal circuit 1 the operating voltage input is provided; When spacer assembly disconnected, dividing potential drop input circuit 32 was in the state of not conducting.
One end of dividing potential drop input circuit 32 connects the first terminal 51, and in the input voltage of input access dividing potential drop input circuit 32, dividing potential drop input circuit 32 is electrically connected to spacer assembly on the first terminal 51, in spacer assembly access dividing potential drop input circuit 32.Because dividing potential drop input circuit 32 is electrically connected to spacer assembly, the input voltage of inputting by the first terminal 51 can act on dividing potential drop input circuit 32 and spacer assembly simultaneously.For example, can be with the port of the port arrangement of the first terminal 51 for the input voltage of accessible 5V, 12V or 24V, after input voltage access dividing potential drop input circuit 32 carries out a certain proportion of dividing potential drop, just can be with the conducting of spacer assembly (voltage that loads on spacer assembly reaches the condition of conducting), when the spacer assembly conducting, PLC controller and expansion input/output module thereof just can be carried out work according to above-mentioned embodiment, that is are carried in input voltage on dividing potential drop input circuit 32 with the spacer assembly conducting.
In enforcement, spacer assembly comprises optocoupler T or other isolating devices, below as an example of optocoupler T example the explanation embodiments of the present invention.
Dividing potential drop input circuit 32 comprises the resistive element that at least one is in parallel with described optocoupler T or connect.For example, resistive element and optocoupler T can be set be in series and/or resistive element be set and optocoupler T is in parallel,, because the resistance of resistive element immobilizes, make the dividing potential drop effect of dividing potential drop input circuit 32 relatively fixing.Like this, can make the input voltage of optocoupler T conducting unique definite, that is to say, relatively fixing by the input voltage of the first terminal 51 configurations.
The preferred embodiment of the present invention is as follows: resistive element comprises the first resistance R 1 that is in series with optocoupler T and the second resistance R 2 that is in parallel with optocoupler T.Wherein, the second resistance R 2 is connected in parallel on the two ends of optocoupler T, optocoupler T and the second resistance R 2 rear series connection the first resistance R 1 that is in parallel, and the integral body that above-mentioned components and parts are electrically connected to forms dividing potential drop input circuit 32; In enforcement, the input voltage that is carried on dividing potential drop input circuit 32 can carry out dividing potential drop by the first resistance R 1, because the resistance of the first resistance R 1 and the second resistance R 2 is set to fixed value, the dividing potential drop effect of dividing potential drop input circuit 32 is relatively fixing, can make optocoupler T conducting when the input voltage by the first terminal 51 inputs meets set value.
In the preferred embodiment of the present invention, dividing potential drop input circuit 32 also comprises capacitor C, and the first resistance R 1 is connected in series with capacitor C, and the second resistance R 2 is connected in parallel on the two ends of capacitor C.
Be understandable that, the dividing potential drop input circuit 32 in above-mentioned embodiment is to arrange at the same time under the mode of the first resistance R 1, the second resistance R 2 to implement.But in the specific implementation, the first resistance R 1, the second resistance R 2 can access separately in dividing potential drop input circuit 32, as long as the resistance of resistive element immobilizes, still can reach above-mentioned implementation result.
Structure between structure between the second terminal 52 and coupled internal circuit and above-mentioned the first terminal 51 and coupled internal circuit is roughly the same, difference is: in the second 52 of terminals circuit in succession, or the resistance resistive element of connect in parallel with optocoupler T ' is different from 51 circuit in succession of the first terminal the resistance with optocoupler T parallel connection or the resistive element of connecting, but the resistance of resistive element is changeless.In circuit as the second terminal 52, resistive element also comprises the first resistance R 1 ' that is in series with optocoupler T ' and the second resistance R 2 ' that is in parallel with optocoupler T '.Wherein, the second resistance R 2 ' is connected in parallel on the two ends of optocoupler T ', optocoupler T ' and the second resistance R 2 ' rear series connection the first resistance R 1 ' that is in parallel, and the integral body that above-mentioned components and parts are electrically connected to forms dividing potential drop input circuit 32.can find out, the dividing potential drop amount (resistance of dividing potential drop input circuit 32 resistive elements is different to be formed) that is different from the dividing potential drop input circuit 32 in the first terminal 51 circuit due to the dividing potential drop amount of the dividing potential drop input circuit 32 in the second terminal 52 circuit, therefore, the set value of the input voltage of the second terminal 52 configurations will be different from the set value of the input voltage of the first terminal 51 configurations, that is to say, the port of the second terminal 52 also can configure the above-mentioned 5V that can be accessed by arbitrarily, the input voltage of 12V or 24V, realize that thus up and down two-layer (group) terminal can be used for inputting the input voltage of multiple standards.
For ease of understanding, the circuit structure of dividing potential drop input circuit 32 is further explained.The structure of dividing potential drop input circuit 32 is in case after determining, in access dividing potential drop input circuit 32, the resistive element (resistance is fixed) of in parallel or series connection has also just been set up man-to-man definite relation with the magnitude of voltage of the input voltage of dividing potential drop input circuit 32 loadings,, when the relation that meets this corresponding coupling, will make the voltage at the two ends of optocoupler T reach set value.Also therefore, the input voltage that the first terminal 51 of corresponding different dividing potential drop input circuits 32 and the second terminal 52 can corresponding adaptive two kinds of standards, as standards such as 5V/12V, 5V/24V or 12V/24V.
For example, in the present embodiment, if when the port arrangement of the first terminal 51 is accessible 5V input voltage, the 5V input voltage is by the first terminal 51 access dividing potential drop input circuits, and the input voltage that accesses like this in dividing potential drop input circuit 32 can reach the condition of optocoupler T conducting after dividing potential drop input circuit 32 dividing potential drops; For another example, if when the port arrangement of the second terminal 52 is accessible 12V input voltage, the 12V input voltage is by the second terminal 52 access dividing potential drop input circuits, input voltage in access dividing potential drop input circuit 32 can reach the condition of optocoupler T ' conducting after dividing potential drop input circuit 32 dividing potential drops like this, the like.No matter the size of above-mentioned input voltage has muchly, and the operating voltage that makes internal circuit 1 normal operation and provide and unaffected is provided dividing potential drop input circuit 32.That is to say, PLC controller and expansion input/output module thereof when with other equipment, interconnecting, do not need the PLC controller that uses electric pressure converter just can be converted to compatible various input voltage and expand the operating voltage that input/output module can receive.
Above embodiment can draw, the purpose that the first terminal 51 and the second terminal 52 32 pairs of input voltages of dividing potential drop input circuit by separately carry out dividing potential drop is: although the external input voltage that PLC controller and expansion input/output module thereof receive is different, the dividing potential drop of the dividing potential drop input circuit 32 by different terminals can both reach the condition that circuit optocoupler T separately works.PLC controller of the present invention, reasonably control the dividing potential drop input circuit by the multiterminal minor structure, and outside various input voltage all is configured to the operating voltage point that optocoupler T separately can normally, realizes the voltage of multiple external perimysium reference input.
In the preferred embodiment of the present invention, optocoupler T comprises light emitting diode 311 and phototriode 312, and an end of described phototriode 312 is connected in parallel on the two ends of described capacitor C, in the relative described internal circuit 1 of other end access.the course of work of optocoupler T is as follows: when the voltage at the two ends of light emitting diode 311 or the electric current by light emitting diode 311 reach set value, namely reach luminous predeterminated voltage value or the predetermined current value of light emitting diode 311 conductings in optocoupler T, light emitting diode 311 conducting irradiation phototriodes 312, after the exposure intensity that reaches phototriode 312 conductings, phototriode 312 conductings, 32 conductings of dividing potential drop input circuit, and provide operating voltage input for internal circuit 1, make PLC controller and expansion input/output module thereof carry out work according to above-mentioned embodiment.
In the specific implementation, the first terminal 51 and the second terminal 52 can corresponding multiple standards input voltages except the corresponding 5V of above-mentioned difference and 12V input voltage for the PLC controller of compatible various input voltage of the present invention.The corresponding relation of above-mentioned terminal and common input voltage (including but not limited to 5V, 12V and 24V) also can adjust accordingly.Each magnitude of voltage of organizing 5 adaptable input voltages of terminal can be realized by the resistance of adjusting the resistive element in the dividing potential drop input circuit before equipment dispatches from the factory.But in the implementation process of the compatible various input voltage of PLC controller, need not to change the resistance of resistive element, also need not to arrange such as switching button, adjusting button etc. and implement.
in other embodiments, the group number of PLC controller terminal 5 can be adjusted according to actual service condition, it also can be set to more than three groups or three groups, as: three groups of terminals can be distinguished corresponding common standard input voltage (5V, 12V and 24V), set up corresponding relation as long as meet magnitude of voltage in parallel in the dividing potential drop input circuit 32 that is connected with each terminal 5 or that be connected on the input voltage that wherein resistive element (resistance is fixed) and dividing potential drop input circuit 32 load, after the input voltage that each terminal configures is determined, just need not to change the resistance of resistive element, also need not to arrange the components and parts such as outside adjusting button.
In other preferred implementations of the present invention, organize in the terminal structure that terminal 5 do not limit dual layer arrangement in the above-described embodiment, it can be applied in terminal number of plies arrangement architecture less than above-mentioned terminal group number even in the terminal structure of single layer structure more.As shown in Figure 3, the first terminal 51 and the second terminal 52 can be arranged in the port organization that only has one deck terminal, the first terminal 51 and the second terminal 52 lay respectively at the two ends of this layer terminal or the middle part that the first terminal 51 is positioned at this layer terminal, and the second terminal 52 is arranged on the situations of arranging such as two ends of this layer terminal, only needs to meet in parallel in the dividing potential drop input circuit 32 that is connected with many groups terminal 5 or be connected on input voltage that wherein resistive element (resistance is fixed) and many group terminals 5 load to set up corresponding configuration relation and get final product; For another example, configurable three groups of terminals 5, but be separately positioned on up and down or the arrangement architecture of the two-layer terminal that arrange left and right in, all do not change essence of the present invention with up conversion.
In above various embodiments, optocoupler T is as a kind of spacer assembly, and it can also be replaced by other isolating devices, such as digital isolator.
implement the PLC controller of compatible various input voltage of the present invention, because the PLC controller comprises at least two group terminals for the different input voltages of adaptive input, make PLC controller and expansion input/output module thereof when with other equipment, interconnecting, do not need to use electric pressure converter just can be converted to the operating voltage that PLC controller and expansion input/output module thereof can receive, input voltage that can compatible other multiple standards, because the structure of dividing potential drop input circuit arranges fixing, need not to change the wherein resistance of resistive element, circuit structure is stable, be easy to cost control, improved the dirigibility of input, adaptability is extensive.
Above disclosed is only preferred embodiment of the present invention, certainly can not limit with this interest field of the present invention, so equivalent variations, still belongs to the scope that the present invention is contained.
Claims (5)
1. the PLC controller of a compatible various input voltage, it is characterized in that, the PLC controller of described compatible various input voltage comprises that the different dividing potential drop input circuit (32) of at least two component pressure amounts, spacer assembly, internal circuit (1) and at least two groups are used for the terminal (5) of the different input voltages of adaptive input;
Described at least two group terminals (5) connect respectively the different dividing potential drop input circuit (32) of described at least two component pressure amounts, described dividing potential drop input circuit (32) is electrically connected to described spacer assembly, in the described spacer assembly described internal circuit of access (1);
Described spacer assembly comprises respectively optocoupler (T) or the digital isolator that is connected with described dividing potential drop input circuit (32) with described internal circuit (1);
Described at least two group terminals (5) are set to be arranged above and below, perhaps described at least two group terminals (5) are arranged as a row, the input voltage by arbitrary group of described terminal (5) input after described dividing potential drop input circuit (32) dividing potential drop with described spacer assembly conducting.
2. the PLC controller of compatible various input voltage as claimed in claim 1, is characterized in that, described dividing potential drop input circuit (32) comprises the resistive element that at least one is in parallel with described spacer assembly or connect.
3. the PLC controller of compatible various input voltage as claimed in claim 2, is characterized in that,
Described resistive element comprises the first resistance (R1) that is in series with described optocoupler (T) and/or the second resistance (R2) that is in parallel with described optocoupler (T).
4. the PLC controller of compatible various input voltage as claimed in claim 3, it is characterized in that, the resistance of described the first resistance (R1) and/or described the second resistance (R2) is set to fixed value, and described the first resistance and/or described the second resistance make described two components press the dividing potential drop amount of input circuits different.
5. as the PLC controller of claim 3 or 4 described compatible various input voltage, it is characterized in that, described dividing potential drop input circuit (32) also comprises electric capacity (C), described the first resistance (R1) is connected in series with described electric capacity (C), and described the second resistance (R2) is connected in parallel on the two ends of described electric capacity (C).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110423016XA CN102436209B (en) | 2011-12-16 | 2011-12-16 | Programmable logic controller (PLC) compatible with various input voltages |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110423016XA CN102436209B (en) | 2011-12-16 | 2011-12-16 | Programmable logic controller (PLC) compatible with various input voltages |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102436209A CN102436209A (en) | 2012-05-02 |
| CN102436209B true CN102436209B (en) | 2013-11-13 |
Family
ID=45984312
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110423016XA Active CN102436209B (en) | 2011-12-16 | 2011-12-16 | Programmable logic controller (PLC) compatible with various input voltages |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102436209B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103885381B (en) * | 2014-03-18 | 2016-09-07 | 深圳市汇川控制技术有限公司 | A kind of wide pressure PLC input circuit |
| EP3696625B1 (en) * | 2019-02-15 | 2022-04-13 | Siemens Aktiengesellschaft | Analog installation module |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2402047Y (en) * | 1999-12-09 | 2000-10-18 | 南京中德保护控制系统有限公司 | Intelligent stand-by power supply automatic converter |
| WO2000073862A1 (en) * | 1999-06-01 | 2000-12-07 | Honeywell Inc. | An electronic means to sense actuation of ac output control circuitry |
| CN101436343A (en) * | 2007-11-15 | 2009-05-20 | 上海华建电力设备有限公司 | Switch-in amount voltage converter |
| CN101813915A (en) * | 2009-12-28 | 2010-08-25 | 上海申瑞电力科技股份有限公司 | GPS (Global Position System) time tick signal conversion device |
-
2011
- 2011-12-16 CN CN201110423016XA patent/CN102436209B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2000073862A1 (en) * | 1999-06-01 | 2000-12-07 | Honeywell Inc. | An electronic means to sense actuation of ac output control circuitry |
| CN2402047Y (en) * | 1999-12-09 | 2000-10-18 | 南京中德保护控制系统有限公司 | Intelligent stand-by power supply automatic converter |
| CN101436343A (en) * | 2007-11-15 | 2009-05-20 | 上海华建电力设备有限公司 | Switch-in amount voltage converter |
| CN101813915A (en) * | 2009-12-28 | 2010-08-25 | 上海申瑞电力科技股份有限公司 | GPS (Global Position System) time tick signal conversion device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102436209A (en) | 2012-05-02 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104009516B (en) | Control method and the device of power supply assembly | |
| CN102789076A (en) | Detection circuit and manufacturing method for liquid crystal display panel | |
| CN103559128A (en) | Power-on and power-off test circuit and power-on and power-off test device | |
| CN104865958A (en) | Matrix switch device, system and method | |
| CN102931971B (en) | Three-state control signal input/output (IO) circuit | |
| WO2011144509A2 (en) | Inductive battery-balancing with reduced circuit complexity | |
| WO2019122064A1 (en) | Electrical battery module using optical communication | |
| CN102436209B (en) | Programmable logic controller (PLC) compatible with various input voltages | |
| CN104967463A (en) | Device of improving radio frequency switch matrix channel isolation | |
| CN113514673B (en) | Touch channel switching circuit, device and detection system | |
| CN101968503A (en) | Load circuit and load testing device with same | |
| CN201655267U (en) | Display screen compatible interface circuit and television with same | |
| CN105589384B (en) | A kind of multi-channel digital amount input/output unit based on FPGA | |
| CN102436211A (en) | PLC (programmable logic controller) and various input voltage compatibility method thereof | |
| EP2770637B1 (en) | Optical coupler assembly and input and/or output component | |
| CN102436210B (en) | PLC (programmable logic controller) and various input voltage compatibility method thereof | |
| CN112803509A (en) | Battery monomer management controller and battery management system | |
| CN105487417A (en) | Switching quantity output circuit | |
| CN203164373U (en) | Detection circuit applied to multiway switch fault signal | |
| CN203218663U (en) | Test switching device for electrical connector | |
| CN102064050A (en) | Matrix switch | |
| CN108519763B (en) | Control circuit and apparatus control method | |
| CN102540956B (en) | PLC (Programmable Logic Controller) and compatible method for various input voltages thereof | |
| CN110911768B (en) | Novel battery management system | |
| DE102014224642B3 (en) | fieldbus communication |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |