CN220710798U - Circuit signal conversion structure and general access signal circuit for intelligent instrument - Google Patents
Circuit signal conversion structure and general access signal circuit for intelligent instrument Download PDFInfo
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- CN220710798U CN220710798U CN202320731781.6U CN202320731781U CN220710798U CN 220710798 U CN220710798 U CN 220710798U CN 202320731781 U CN202320731781 U CN 202320731781U CN 220710798 U CN220710798 U CN 220710798U
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- jumper cap
- resistor
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- 238000006243 chemical reaction Methods 0.000 title claims abstract description 35
- 238000005259 measurement Methods 0.000 claims description 13
- 238000010586 diagram Methods 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002596 correlated effect Effects 0.000 description 1
- 230000000875 corresponding effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
Abstract
The utility model discloses a circuit signal conversion structure and a universal access signal circuit for an intelligent instrument; the conversion structure is arranged on the signal circuit and comprises a jumper cap assembly, the jumper cap assembly comprises a plurality of wiring terminals, and the jumper cap assembly jumps to different positions to realize conversion of different types of input signals in the signal circuit; the scheme adopts the common basic element jumper cap to normalize various signal inputs into one circuit, is connected with a subsequent circuit in a jumper mode of a jumper cap assembly, has extremely simple circuit structure, extremely low cost, high reliability and extremely strong anti-interference capability.
Description
Technical Field
The utility model relates to the technical field of measurement and control, in particular to a circuit signal conversion structure and a universal access signal circuit for an intelligent instrument.
Background
The existing intelligent instrument comprises various types of input signals of various controllers such as a temperature controller, a DDC (direct digital control), a valve and the like, and the devices generally input and process signals such as voltage, current, resistance and the like through different interfaces (terminals) respectively, so that the volume of a product can be increased, and the requirements of customers can not be met under the large background of the smaller industry.
It should be noted that the foregoing description of the background art is only for the purpose of providing a clear and complete description of the technical solution of the present utility model and is presented for the convenience of understanding by those skilled in the art. The above-described solutions are not considered to be known to the person skilled in the art simply because they are set forth in the background of the utility model section.
Disclosure of Invention
In order to overcome the above drawbacks, an object of the present utility model is to provide a circuit signal conversion structure and a universal access signal circuit for a smart meter, so as to effectively solve the above technical problems.
In order to achieve the above purpose, the utility model adopts the following technical scheme: a circuit signal conversion structure, the conversion structure sets up on signal circuit, the conversion structure includes jumper cap subassembly, jumper cap subassembly includes a plurality of binding post, through jumper cap subassembly jumps to different positions, realizes the conversion of different grade type input signal in the signal circuit.
Further, the jumper cap assembly comprises a first wiring terminal, and when the signal circuit is connected with the first wiring terminal in the jumper cap assembly, the signal circuit can realize input current value measurement.
Further, the jumper cap assembly comprises a second wiring terminal, and when the signal circuit is connected with the second wiring terminal in the jumper cap assembly, the signal circuit can realize input voltage value measurement.
Further, the jumper cap assembly comprises a third wiring terminal, and when the signal circuit is connected with the third wiring terminal in the jumper cap assembly, the signal circuit can realize input resistance value measurement.
Further, the jumper cap assembly comprises a fourth wiring terminal, and when the signal circuit is communicated with the third wiring terminal in the jumper cap assembly, the signal circuit can realize input frequency value measurement.
The utility model also provides a universal access signal circuit for a smart meter, the signal circuit connecting an A/D analog interface and an I/O digital interface of the smart meter, the signal circuit comprising:
a signal access terminal;
the circuit signal conversion structure;
the resistors comprise a first resistor, a second resistor, a third resistor and a fourth resistor;
a constant current source.
Further, when the jumper cap assembly in the circuit signal conversion structure jumps to the first wiring terminal, in the signal circuit, the signal access terminal, the first wiring terminal, the first resistor, the second resistor and the a/D analog interface form a path for measuring an input current value.
Further, when the jumper cap assembly in the circuit signal conversion structure jumps to the second wiring terminal, in the signal circuit, the signal access terminal, the second wiring terminal, the first resistor, the second resistor, the third resistor and the a/D analog interface form a path for measuring an input voltage value.
Further, when the jumper cap assembly in the circuit signal conversion structure jumps to the third wiring terminal, in the signal circuit, the signal access terminal, the third wiring terminal, the second resistor, the constant current source and the a/D analog interface constitute a path for measuring an input resistance value.
Further, when the jumper cap assembly in the circuit signal conversion structure jumps to a fourth wiring terminal, in the signal circuit, the signal access terminal, the fourth wiring terminal, the fourth resistor and the I/O digital interface form a path for measuring an input frequency value.
The beneficial effects of the utility model are as follows: the scheme adopts the common basic element jumper cap to normalize various signal inputs into one circuit, is connected with a subsequent circuit in a jumper mode of a jumper cap assembly, has extremely simple circuit structure, extremely low cost, high reliability and extremely strong anti-interference capability.
Drawings
Fig. 1 is a schematic diagram of a signal circuit and a circuit signal conversion structure according to a first embodiment of the utility model.
Fig. 2 is a circuit diagram of a signal circuit for measuring an input current value in a second embodiment of the present utility model.
Fig. 3 is a circuit diagram of a signal circuit for measuring an input voltage value according to a second embodiment of the present utility model.
Fig. 4 is a circuit diagram of a signal circuit for measuring an input resistance value according to a second embodiment of the present utility model.
Fig. 5 is a path for measuring an input frequency value in the signal circuit according to the second embodiment of the present utility model.
In the figure: 1. a jumper cap assembly; 2. a signal access terminal; 3. a first resistor; 4. a second resistor; 5. a third resistor; 6. a fourth resistor; 7. a constant current source;
1.1, a first wiring terminal; 1.2, a second wiring terminal; 1.3, a third terminal; 1.4, fourth terminal.
Detailed Description
The preferred embodiments of the present utility model will be described in detail below with reference to the accompanying drawings so that the advantages and features of the present utility model can be more easily understood by those skilled in the art, thereby making clear and defining the scope of the present utility model.
Please refer to fig. 1-5. It should be noted that, in the description of the present utility model, it should be noted that, directions or positional relationships indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., are directions or positional relationships based on those shown in the drawings, or directions or positional relationships in which the inventive product is conventionally put in use, are merely for convenience of describing the present utility model and for simplifying the description, and are not indicative or implying that the apparatus or element to be referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," "third," and the like are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance. The terms "horizontal," "vertical," "overhang," and the like do not denote that the component is required to be absolutely horizontal or overhang, but may be slightly inclined. As "horizontal" merely means that its direction is more horizontal than "vertical", and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.
In the description of the present utility model, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, integrally connected, mechanically connected, electrically connected, directly connected, indirectly connected through an intermediary, or communicating between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.
Embodiment one:
referring to fig. 1, a circuit signal conversion structure is provided on a signal circuit, the conversion structure includes a jumper cap assembly 1, the jumper cap assembly 1 includes four connection terminals, and the jumper cap assembly 1 jumps to four different positions to realize conversion of different types of input signals, specifically as follows:
the input current value measurement is achieved when the jumper cap jumps to the first terminal 1.1.
And when the jumper cap jumps to the second terminal 1.2, the input voltage value measurement is realized.
And when the jumper cap jumps to the third terminal 1.3, the input resistance value measurement is realized.
And when the jumper cap jumps to the fourth wiring terminal 1.4, the input frequency value measurement is realized.
Various signal inputs are normalized into one circuit by adopting a common basic element jumper cap, and the common basic element jumper cap is connected with a subsequent circuit in a jumper manner by the jumper cap assembly 1.
Embodiment two:
referring to fig. 2 to 5, a general access signal circuit for a smart meter, the signal circuit connects an a/D analog interface and an I/O digital interface of the smart meter, the signal circuit includes a signal access terminal 2, a circuit signal conversion structure in embodiment one, four resistors (a first resistor 3, a second resistor 4, a third resistor 5 and a fourth resistor 6) and a constant current source 7, the signal circuit can perform signal conversion according to different signals after connecting the a/D analog interface and the I/O digital interface of the smart meter, and can respectively measure an input current value, an input voltage value, an input resistance value and an input frequency value, and the specific steps are as follows:
when the jumper cap assembly 1 in the circuit signal conversion structure jumps to the first terminal 1.1, in the signal circuit, as shown in fig. 2, the signal access terminal 2, the first terminal 1.1, the first resistor 3, the second resistor 4 and the a/D analog interface form a path for measuring an input current value, the input current flows through the first resistor 3 to the ground, a voltage value is generated at two ends of the first resistor 3, the voltage value is positively correlated with the magnitude of the input current value and the sampling resistor second resistor 4, the input range of the a/D converter is set to be 5V, the maximum input current is set to be 20mA, the value of R2 is set to be 250 Ω, and correspondingly, if the input current value is 200mA, the value of R2 is set to be 25 Ω.
When the jumper cap assembly 1 in the circuit signal conversion structure jumps to the second terminal 1.2, in the signal circuit, as shown in fig. 3, the signal access terminal 2, the second terminal 1.2, the first resistor 3, the second resistor 4, the third resistor 5 and the a/D analog interface form a path for measuring an input voltage value; the input voltage is divided by the second resistor 4 and the third resistor 5, and the voltage value on the third resistor 5 is converted by the a/D converter. The value of the third resistor 5 is 100kΩ when the input range of the a/D converter is 0-5V, the maximum input voltage is 10V, the value of the second resistor 4 is 100kΩ, and the value of the third resistor 5 may be 49.9kΩ when the input range of the a/D converter is 0-3.3V, the value of the second resistor 4 is still 100kΩ.
When the jumper cap assembly 1 in the circuit signal conversion structure jumps to the third wiring terminal 1.3, in the signal circuit, as shown in fig. 4, the signal access terminal 2, the third wiring terminal 1.3, the second resistor 4, the constant current source 7 and the a/D analog interface form a path for measuring an input resistance value; the constant current source 7i produces a voltage value on the resistor to be measured (input), which is coupled to the input of the a/D converter via the second resistor 4, the resistance value of the resistor being proportional to the terminal voltage, the constant current source 7i can produce a constant current using either a single constant current tube or other forms of combined circuits, the constant current value being 50uA considering the maximum input resistance of 100kΩ, and so on.
When the jumper cap assembly 1 in the circuit signal conversion structure jumps to the fourth wiring terminal 1.4, in the signal circuit, as shown in fig. 5, the signal access terminal 2, the fourth wiring terminal 1.4, the fourth resistor 6 and the I/O digital interface form a path for measuring an input frequency value; the fourth resistor 6 is used as a pull-down bias resistor, the signal voltage at two ends of the pull-down bias resistor is received by an I/O digital port in the intelligent instrument, and the microprocessor in the intelligent instrument can easily measure the corresponding information such as frequency, period, duty ratio and the like.
The above embodiments are only for illustrating the technical concept and features of the present utility model, and are intended to enable those skilled in the art to understand the content of the present utility model and to implement the same, but are not intended to limit the scope of the present utility model, and all equivalent changes or modifications made according to the spirit of the present utility model should be included in the scope of the present utility model.
Claims (2)
1. A circuit signal conversion structure, said conversion structure being provided on a signal circuit, characterized in that: the conversion structure comprises a jumper cap assembly, wherein the jumper cap assembly comprises a plurality of wiring terminals, and the jumper cap assembly jumps to different positions to realize conversion of different types of input signals in the signal circuit;
the jumper cap assembly comprises a first wiring terminal, and when the signal circuit is communicated with the first wiring terminal in the jumper cap assembly, the signal circuit can realize input current value measurement;
the jumper cap assembly comprises a second wiring terminal, and when the signal circuit is communicated with the second wiring terminal in the jumper cap assembly, the signal circuit can realize measurement of an input voltage value;
the jumper cap assembly comprises a third wiring terminal, and when the signal circuit is communicated with the third wiring terminal in the jumper cap assembly, the signal circuit can realize the measurement of an input resistance value;
the jumper cap assembly comprises a fourth wiring terminal, and when the signal circuit is communicated with the third wiring terminal in the jumper cap assembly, the signal circuit can realize input frequency value measurement.
2. A universal access signal circuit for a smart meter, the signal circuit switching on an a/D analog interface and an I/O digital interface of the smart meter, characterized by: the signal circuit includes:
a signal access terminal;
the circuit signal conversion structure of claim 1;
the resistors comprise a first resistor, a second resistor, a third resistor and a fourth resistor;
a constant current source;
wherein,
when the jumper cap assembly in the circuit signal conversion structure jumps to a first wiring terminal, in the signal circuit, the signal access terminal, the first wiring terminal, the first resistor, the second resistor and the A/D analog interface form a passage for measuring an input current value;
when the jumper cap assembly in the circuit signal conversion structure jumps to the second wiring terminal, in the signal circuit, the signal access terminal, the second wiring terminal, the first resistor, the second resistor, the third resistor and the A/D analog interface form a passage for measuring an input voltage value;
when the jumper cap assembly in the circuit signal conversion structure jumps to a third wiring terminal, in the signal circuit, the signal access terminal, the third wiring terminal, the second resistor, a constant current source and the A/D analog interface form a passage for measuring an input resistance value;
when the jumper cap assembly in the circuit signal conversion structure jumps to the fourth wiring terminal, in the signal circuit, the signal access terminal, the fourth wiring terminal, the fourth resistor and the I/O digital interface form a passage for measuring an input frequency value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320731781.6U CN220710798U (en) | 2023-04-06 | 2023-04-06 | Circuit signal conversion structure and general access signal circuit for intelligent instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320731781.6U CN220710798U (en) | 2023-04-06 | 2023-04-06 | Circuit signal conversion structure and general access signal circuit for intelligent instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220710798U true CN220710798U (en) | 2024-04-02 |
Family
ID=90449647
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320731781.6U Active CN220710798U (en) | 2023-04-06 | 2023-04-06 | Circuit signal conversion structure and general access signal circuit for intelligent instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220710798U (en) |
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2023
- 2023-04-06 CN CN202320731781.6U patent/CN220710798U/en active Active
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