Current and voltage automatic conversion and acquisition circuit
By designing a current-voltage automatic conversion acquisition circuit, using resistors, relays and operational amplifiers and other components, a hardware circuit module can collect current or voltage, solving the problems of high acquisition costs and cumbersome operation in the existing technology. , improves the convenience of collection.
Patent Information
- Application Number
- CN202420491978.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-14
- Publication Date
- 2025-02-18
- Estimated Expiration
- 2034-03-14
AI Technical Summary
In the prior art, the acquisition of current or voltage requires at least two circuit modules, resulting in high hardware design and maintenance costs, cumbersome operation and inconvenient use.
Design a current-voltage automatic conversion acquisition circuit, and realize the acquisition of current and voltage through a hardware circuit module. It adopts a combination of resistors and relays and uses an operational amplifier to automatically convert current and voltage.
It realizes the acquisition of current or voltage through a hardware circuit module, which reduces hardware design and maintenance costs, simplifies operations, and improves the convenience of use.
Smart Images
Figure CN222506416U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of circuits, and in particular relates to a current and voltage automatic conversion and acquisition circuit. Background Art
[0002] In engineering applications, current or voltage collection is required. In the prior art, voltage or current collection can only be completed using the corresponding collection circuit. At least two circuit modules are required to complete the corresponding current or voltage collection, which increases the hardware design and maintenance costs, and the actual operation is more troublesome and inconvenient to use. Summary of the invention
[0003] The purpose of the utility model is to overcome the above disadvantages and provide a convenient current and voltage automatic conversion acquisition circuit which can collect current or voltage by only one hardware circuit.
[0004] The purpose of the utility model and the solution of its main technical problems are achieved by adopting the following technical solutions:
[0005] The utility model discloses a current and voltage automatic conversion and acquisition circuit, comprising a resistor A, a resistor B, a resistor C, a resistor D, a relay A, an operational amplifier, a resistor E, a relay B, a switch transistor, a resistor F, and a resistor J, and is characterized in that the resistor A is connected to the resistor B and the resistor C respectively by wires, the resistor B is connected to the resistor D and the relay A respectively by wires, the relay A is connected to the resistor C, the operational amplifier, the resistor E, the relay B, the switch transistor, and the resistor J respectively by wires, the operational amplifier is connected to the relay B by wires, the relay B is connected to the resistor E by wires, and the switch transistor is connected to the resistor F and the resistor J by wires.
[0006] The resistor A is a current sampling resistor.
[0007] The resistor F is a current limiting resistor.
[0008] The resistor J is a voltage sampling resistor.
[0009] Compared with the prior art, the utility model has obvious beneficial effects; from the above technical scheme, it can be seen that: resistor A is connected to resistor B and resistor C respectively with wires, resistor B is connected to resistor D and relay A respectively with wires, relay A is connected to resistor C, operational amplifier, resistor E, relay B, switch transistor, resistor J respectively with wires, the operational amplifier is connected to relay B with wires, relay B is connected to resistor E with wires, and the switch transistor is connected to resistor F and resistor J with wires. The current is converted into a voltage through the current sampling resistor A (generally not more than 1Ω), and the converted voltage is used by other circuits through the input balancing resistor (resistor B, resistor C, resistor D, resistor E) of the operational amplifier and the output of the operational amplifier, thereby completing the current collection;
[0010] When collecting voltage V2, voltage V2 enters the circuit, the switch transistor is turned on, relay A and relay B are switched to connect the voltage collection branch inside the relay, and voltage V2 passes through the voltage sampling resistor and relay A and then enters the operational amplifier output for use by other circuits, completing the voltage collection. This solves the problems of high hardware design and maintenance costs of traditional collection circuits and cumbersome actual operations, so that current or voltage collection can be performed with one circuit in engineering applications, making current and voltage collection more convenient. It realizes that current or voltage collection can be performed with only one hardware circuit, which is easy to use. BRIEF DESCRIPTION OF THE DRAWINGS
[0011] Figure 1 It is a structural schematic diagram of the utility model.
[0012] Marking in the figure
[0013] 1. Resistor A, 2. Resistor B, 3. Resistor C, 4. Resistor D, 5. Relay A, 6. Operational amplifier, 7. Resistor E, 8. Relay B, 9. Switching transistor, 10. Resistor F, 11. Resistor J. DETAILED DESCRIPTION
[0014] The specific implementation methods, structures, features and functions of the present invention are described in detail below in conjunction with the accompanying drawings and preferred embodiments.
[0015] The utility model discloses a current and voltage automatic conversion acquisition circuit, comprising a resistor A1, a resistor B2, a resistor C3, a resistor D4, a relay A5, an operational amplifier 6, a resistor E7, a relay B8, a switch transistor 9, a resistor F10, and a resistor J11, and is characterized in that two ends of the resistor A1 are respectively connected to the resistor B2 and the resistor C3 by wires, the end of the resistor B2 is respectively connected to the resistor D4 and the relay A5 by wires, the relay A5 is respectively connected to the resistor C3, the operational amplifier 6, the resistor E7, the relay B8, the switch transistor 9, and the resistor J11 by wires, the operational amplifier 6 is connected to the relay B8 by wires, the relay B8 is connected to the resistor E7 by wires, the switch transistor 9 is connected to the resistor F10 and the resistor J11 by wires, the resistor A1 is a current sampling resistor, the resistor F10 is a current limiting resistor, and the resistor J11 is a voltage sampling resistor.
[0016] When in use, current is collected; the current is converted into a voltage through the current sampling resistor A1, and the converted voltage is input to the balancing resistor of the operational amplifier 6. The balancing resistor includes resistor B2, resistor C3, resistor D4, and resistor E7. The balancing resistor and the output of the operational amplifier 6 are used by other circuits to complete the current collection; when the voltage V2 is collected, the voltage V2 enters the circuit, the switching transistor 9 is turned on, the relay A5 and the relay B8 are converted to connect the voltage collection branch inside the relay, and the voltage V2 passes through the voltage sampling resistor 11 and then passes through the relay A5 into the output of the operational amplifier 6 for use by other circuits to complete the voltage collection.
[0017] The above description is only a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention without departing from the technical solution of the present invention still fall within the scope of the technical solution of the present invention.
Claims
1. A current and voltage automatic conversion and acquisition circuit, comprising a resistor A (1), a resistor B (2), a resistor C (3), a resistor D (4), a relay A (5), an operational amplifier (6), a resistor E (7), a relay B (8), a switching transistor (9), a resistor F (10), and a resistor J (11), characterized in that; Resistor A (1) is connected to resistor B (2) and resistor C (3) with wires. Resistor B (2) is connected to resistor D (4) and relay A (5) with wires. Relay A (5) is connected to resistor C (3), operational amplifier (6), resistor E (7), relay B (8), switching transistor (9), and resistor J (11) with wires. The operational amplifier (6) is connected to relay B (8) with wires. Relay B (8) is connected to resistor E (7) with wires. The switching transistor (9) is connected to resistor F (10) and resistor J (11) with wires.
2. A current and voltage automatic conversion acquisition circuit as claimed in claim 1, characterized in that; The resistor A (1) is a current sampling resistor.
3. The current and voltage automatic conversion and acquisition circuit according to claim 1, characterized in that: The resistor F (10) is a current limiting resistor.
4. The current and voltage automatic conversion and acquisition circuit according to claim 1, characterized in that: The resistor J (11) is a voltage sampling resistor.