Control module for direct-current power supply control circuit

Abstract

A control module for a DC power supply control circuit comprises a data transmission interface circuit, an ADC converter and a processor, the data transmission interface module comprises a communication chip and a differential-to-single-ended conversion loop, the communication chip is used for receiving a control signal, and the conversion circuit can transmit the control signal to the control module in a single-ended manner; the ADC converter is used for receiving a control signal, converting an analog quantity control signal into a digital quantity and transmitting the digital quantity to the processor, and the processor controls the power supply condition of each load through the load switch control module according to the digital quantity control signal; the control module can stably receive remote signals.

Description

Technical Field

[0001] The utility model relates to the technical field of direct current power supply, in particular to a control module used in a direct current power supply control circuit. Background Art

[0002] As is known, a DC power supply is a power supply device that can provide a constant current to multiple loads at the same time. The function of the control module in the DC power supply is to control and record the power supply status of each load according to the control signal sent by the host computer, and to judge the power supply of the external power supply and the power supply of the load by the power supply itself according to the external power supply current information collected by the analog signal processing module and the load power supply situation collected by the relay switch;

[0003] Traditional control modules generally use single-chip microcomputers, microchips and other processors to process and analyze signals. However, since the distance between the host computer and the control module is generally far, transmission interference is prone to occur during data transmission, resulting in data loss, which in turn affects the subsequent power supply switching of multiple loads and causes errors.

[0004] Therefore, in summary, there is a need in the market for a control module that can stably receive distant signals. Utility Model Content

[0005] In order to overcome the deficiencies in the background technology, the utility model discloses a control module for a DC power supply control circuit.

[0006] In order to achieve the above-mentioned invention object, the utility model adopts the following technical solutions:

[0007] A control module for a DC power supply control circuit comprises a data transmission interface circuit, an ADC converter and a processor, wherein the data transmission interface module comprises a communication chip and a differential to single-ended conversion circuit, wherein the communication chip is used to receive a control signal, and the conversion circuit can transmit the control signal to the control module in a single-ended manner;

[0008] The ADC converter is used to receive the control signal, and can convert the analog control signal into a digital quantity and transmit it to the processor. The processor controls the power supply of each load through the load switch control module according to the digital control signal.

[0009] Due to the adoption of the above-mentioned technical solution, the utility model has the following beneficial effects:

[0010] The utility model discloses a control module for a DC power supply control circuit, which transmits control signals in a single-ended manner through a data transmission interface circuit, thereby improving the stability and anti-interference capability during signal transmission and ensuring the control accuracy of subsequent control modules; in addition, an ADC converter is externally connected to a reference voltage calibration loop, thereby improving the sampling accuracy of the ADC converter and improving signal strength. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 A structural schematic diagram of the utility model;

[0012] Figure 2 It is a schematic diagram of the circuit structure of the data transmission interface module;

[0013] Figure 3 Schematic diagram of the circuit structure of the ADC converter and processor.

[0014] In the figure: 1. data transmission interface circuit; 101. communication chip; 102. conversion circuit; 2. ADC converter; 3. processor. DETAILED DESCRIPTION

[0015] The technical solution of the present invention will be described below in conjunction with the drawings in the embodiments of the present invention. In the description, it should be understood that if there are terms such as "upper", "lower", "front", "rear", "left", "right" and the like indicating directions or positional relationships, they are only corresponding to the drawings of the present invention, for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific direction:

[0016] Combined with Figure 1-3 A control module for a DC power supply control circuit comprises a data transmission interface circuit (1), an ADC converter (2) and a processor (3); the data transmission interface module comprises a communication chip (101) and a differential-to-single-ended conversion circuit (102); the communication chip (101) is used to receive a control signal; the conversion circuit can transmit the control signal to the control module in a single-ended manner; the communication chip (101) can also isolate the control signal; and, since the data transmission interface module is far from the control module, the control signal is transmitted in a single-ended manner, thereby improving the stability and anti-interference capability of the signal transmission process and ensuring the control accuracy of the subsequent control module;

[0017] The ADC converter (2) is used to receive a control signal and is capable of converting an analog control signal into a digital quantity and transmitting the digital quantity to the processor (3). In addition, the ADC converter (2) is externally connected to a reference voltage calibration loop, which is capable of improving the sampling accuracy of the ADC converter (2) and improving the signal strength. The processor (3) controls the power supply of each load through the load switch control module 4 according to the digital control signal.

[0018] The parts of the present invention that are not described in detail are prior art. It is obvious to those skilled in the art that the present invention is not limited to the details of the above-mentioned exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is limited by the attached claims rather than the above description. Therefore, it is intended to include all changes within the meaning and scope of the equivalent elements of the claims in the present invention, and any figure marks in the claims should not be regarded as limiting the claims involved.

Claims

1. A control module for a DC power supply control circuit, characterized in that: It comprises a data transmission interface circuit (1), an ADC converter (2) and a processor (3), wherein the data transmission interface circuit (1) comprises a communication chip (101) and a differential-to-single-ended conversion circuit (102), the communication chip (101) is used to receive a control signal, and the conversion circuit can transmit the control signal to a control module in a single-ended manner; The ADC converter (2) is used to receive a control signal and is capable of converting an analog control signal into a digital quantity and transmitting the digital quantity to the processor (3). The processor (3) controls the power supply of each load through a load switch control module according to the digital control signal.

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