CN210323854U - Programmable resistance board - Google Patents
Programmable resistance board Download PDFInfo
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- CN210323854U CN210323854U CN201921803709.XU CN201921803709U CN210323854U CN 210323854 U CN210323854 U CN 210323854U CN 201921803709 U CN201921803709 U CN 201921803709U CN 210323854 U CN210323854 U CN 210323854U
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- resistance
- board
- control unit
- load output
- output control
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Abstract
The utility model discloses a resistance board able to programme, including the resistance board body, the up end one side of resistance board body is arranged and is set up a plurality of resistances, the upper end opposite side of resistance board body is equipped with integrated circuit board hardware circuit unit, integrated circuit board hardware circuit unit includes MCU main control chip, load output control unit, LAN RS485 communication module and power module, power module electric connection MCU main control chip, load output control unit, LAN RS485 communication module, load output control unit electric connection resistance. The programmable resistance board has high-density programmable resistance and high output resistance precision; the power of the output load can be replaced, and the adjusting mode is simple; the control circuit is completely isolated from the programmable resistor; supporting special resistor replacement.
Description
Technical Field
The utility model belongs to the technical field of the resistance integrated circuit board, concretely relates to resistance board able to programme.
Background
The programmable resistance card can be widely applied to load simulation occasions of instruments and meters, can realize single-channel load output by adopting a high-speed and high-precision resistance matrix switch form and matching with upper computer labview software, enables the card to output a wider resistance output range as far as possible aiming at different application occasions, is very suitable for simulating resistive loads and used for system test simulation, and meets the requirement of verifying system response by a user in a design stage or production test as far as possible.
The defects and shortcomings of the prior art are as follows:
1. when the load output does not meet the established requirement, a physical load needs to be simulated in the PCBA test process, and the load output cannot be switched and controlled randomly;
2. the cost and the cost are high, the size and the volume are large, and the use is heavy and inflexible.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a resistance board able to programme to solve the problem that proposes among the above-mentioned background art.
In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a resistance board able to programme, includes the resistance board body, the up end one side of resistance board body is arranged and is set up a plurality of resistances, the upper end opposite side of resistance board body is equipped with integrated circuit board hardware circuit unit, integrated circuit board hardware circuit unit includes MCU main control chip, load output control unit, LAN RS485 communication module and power module, power module electric connection MCU main control chip, load output control unit, LAN RS485 communication module, load output control unit electric connection resistance.
Preferably, the resistance plate body side and the fixed mounting panel that is equipped with in one side that is close to the resistance, the both ends of mounting panel all set up the installation screw.
Preferably, the output port of the load output control unit is connected with an external analog signal by a coaxial line with a 4.2 mm-pitch terminal.
Preferably, the board card hardware circuit unit is further provided with an indicator lamp.
The utility model discloses a technological effect and advantage: the programmable resistance board has high-density programmable resistance and high output resistance precision; the power of the output load can be replaced, and the adjusting mode is simple; the control circuit is completely isolated from the programmable resistor; supporting special resistor replacement.
Drawings
Fig. 1 is a schematic structural view of the present invention;
fig. 2 is a schematic diagram of the structure of the circuit board circuit unit of the present invention;
fig. 3 is a schematic view of the load output connection of the present invention.
In the figure: 1. a resistance plate body; 2. a resistance; 3. mounting a plate; 4. mounting screws; 5. the MCU main control chip; 6. a load output control unit; 7. LAN/RS485 communication module; 8. a power supply module; 9. and a board card hardware circuit unit.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
The utility model provides a resistance board able to programme as shown in fig. 1-3, including resistance board body 1, resistance board body 1 side and the fixed mounting panel 3 that is equipped with in one side that is close to resistance 2, the both ends of mounting panel 3 all set up installation screw 4, a plurality of resistances 2 of arranging of upper end one side of resistance board body 1, the upper end opposite side of resistance board body 1 is equipped with integrated circuit board hardware circuit unit 9, integrated circuit board hardware circuit unit 9 includes MCU main control chip 5, load output control unit 6, LAN/RS485 communication module 7 and power module 8, MCU main control chip 5 is the integrated circuit board core, is responsible for logic control, data processing, external communication, and LAN/RS485 communication 7 is external integrated circuit board communication control circuit, follows ethernet communication protocol and Modbus RTU protocol; the load output control unit 6 is a relay control circuit formed by a plurality of cascade logic chips and a large-current drive IC and is used for controlling load output; the power module 8 is responsible for providing the circuit of reliable and stable working power supply for the monoblock integrated circuit board, load output control unit 6's output port adopts the coaxial line connection external analog signal of 4.2mm interval terminal, integrated circuit board hardware circuit unit 9 still is equipped with the pilot lamp, 8 electric connection MCU main control chip 5 of power module, load output control unit 6, LAN RS485 communication module 7, 6 electric connection resistance 2 of load output control unit.
The programmable resistance card has rich application functions, can realize quick output of single-channel resistance value by matching with different labview programs, is very convenient to use, and can be normally used only by being connected according to the wiring mode; the programmable speed of the board card is high, and the response speed can reach 10 times per second to output different loads; the external analog signal is connected to the programmable resistance output terminal of the board card by adopting a coaxial line with 4.2 mm-distance terminals, so that the board card can be connected to a load environment for use, can be independently used, and can also be matched with a standard 3U test cabinet for use.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications and variations can be made in the embodiments or in part of the technical features of the embodiments without departing from the spirit and the scope of the invention.
Claims (4)
1. A programmable resistance plate, comprising a resistance plate body (1), characterized in that: the utility model discloses a resistance board, including resistance board body (1), upper end face one side of resistance board body (1) is arranged and is set up a plurality of resistance (2), the upper end opposite side of resistance board body (1) is equipped with integrated circuit board hardware circuit unit (9), integrated circuit board hardware circuit unit (9) include MCU main control chip (5), load output control unit (6), LAN RS485 communication module (7) and power module (8), power module (8) electric connection MCU main control chip (5), load output control unit (6), LAN RS485 communication module (7), load output control unit (6) electric connection resistance (2).
2. A programmable resistance plate according to claim 1, wherein: resistance board body (1) side and be close to one side fixed mounting panel (3) that is equipped with of resistance (2), the both ends of mounting panel (3) all set up installation screw (4).
3. A programmable resistance plate according to claim 1, wherein: the output port of the load output control unit (6) is connected with an external analog signal by adopting a coaxial line with a 4.2 mm-distance terminal.
4. A programmable resistance plate according to claim 1, wherein: and the board card hardware circuit unit (9) is also provided with an indicator lamp.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921803709.XU CN210323854U (en) | 2019-10-25 | 2019-10-25 | Programmable resistance board |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921803709.XU CN210323854U (en) | 2019-10-25 | 2019-10-25 | Programmable resistance board |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210323854U true CN210323854U (en) | 2020-04-14 |
Family
ID=70134422
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921803709.XU Active CN210323854U (en) | 2019-10-25 | 2019-10-25 | Programmable resistance board |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210323854U (en) |
-
2019
- 2019-10-25 CN CN201921803709.XU patent/CN210323854U/en active Active
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