Dual-power-supply input data acquisition terminal

• Main Authors: ZHANG KAI, ZHANG ENZHONG, LI XIAOGANG, ZHAO SHIBAI
• Format: Patent
• Language: English
• Published: 25.03.2015
• Subjects: CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTINGELECTRIC POWER; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; ELECTRICITY; GENERATION; SYSTEMS FOR STORING ELECTRIC ENERGY

A dual-power-supply input data acquisition terminal comprises a power supply module, an energy data acquisition terminal, data acquisition units and a communication bus unit. The power supply module comprises a switching power supply and a dual-power-supply shifter, the dual-power-supply shifter comprises a main power supply, standby power supplies and an intermediate relay, the main power supply is divided into two branch circuits, one branch circuit is connected with the incoming line side terminal of a normally open switch of the intermediate relay, the other branch circuit is connected with a sucking coil of the intermediate relay, the standby power supplies are connected with the incoming line side terminal of a normally closed switch of the intermediate relay, and the outgoing line side terminal of the normally closed switch is connected with the outgoing line side terminal of the normally open switch in parallel and then connected with the switching power supply. Input of dual power supplies is achieved through the dual-power-supply shifter, when one power supply breaks down, the damaged power supply is automatically switched to the other power supply, operational reliability of the data acquisition terminal is improved, and the dual-power-supply input data acquisition terminal has the advantages of being low in power consumption and cost.