Signal conversion circuit in power supply cabinet monitoring system
A monitoring system and a technology for converting signals, which are applied in the parts of electrical measuring instruments, positive feedback circuit devices, measuring electricity, etc., can solve the problems of cumbersome low-voltage process, complex circuit structure, and many components used, and achieve low cost, The overall structure is simple and the effect of less components
Inactive Publication Date: 2019-03-05
刘荣伟
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Problems solved by technology
The circuit structure designed by the monitoring system of the existing power supply cabinet to convert the large current into a small voltage is complex, using many components, and the cost is high, and the process of adjusting the large current signal to the small voltage required by the controller in the monitoring system is cumbersome
Method used
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[0015] Such as figure 1 As shown, the signal conversion circuit in the monitoring system of the power supply cabinet includes resistor R1, resistor R2, operational amplifier A1, capacitor C1, capacitor C2, power supply VCC and signal output circuit, wherein resistor R1 is an adjustable resistor, power supply VCC and operation Amplifier A1 is connected to and powers operational amplifier A1. One end of the parallel branch formed by the parallel connection of the resistor R1 and the capacitor C1 is connected to the inverting input terminal of the operational amplifier A1, and the other end is connected to the output terminal of the operational amplifier A1. One end of the resistor R2 is connected to the output end of the operational amplifier A1, and the other end is connected to the signal output line. One end of the capacitor C2 is connected to the signal output line, and the other end is grounded.
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The invention discloses a signal conversion circuit in a power supply cabinet monitoring system. The circuit comprises a resistor R1, a resistor R2, an operational amplifier A1, a capacitor C1, a capacitor C2 and a signal output line. The resistor R1 is connected with the capacitor C1 in parallel to form a parallel branch, one end of the parallel branch is connected with the anti-phase input end of the operational amplifier A1, and the other end of the parallel branch is connected with the output end of the operational amplifier A1. One end of the resistor R2 is connected with the output end of the operational amplifier A1, and the other end of the resistor R2 is connected with the signal output line. One end of the capacitor C2 is connected with the signal output line, and the other end of the capacitor C2 is grounded. Via the above structure, the whole structure is simpler, fewer components are used, the circuit is convenient to realize, the cost is low, and during use of the circuit, a needed voltage obtained by debugging is convenient to output, and the circuit can be widely popularized and applied.
Description
technical field [0001] The invention relates to the field of furniture production, in particular to a circuit for converting signals in a power supply cabinet monitoring system. Background technique [0002] In the production process of furniture, power supply cabinets are often used to supply power to electrical equipment. In order to maintain the power supply cabinets when they fail, manual inspections are often used to check the working status of the power supply cabinets. The manual patrol inspection method has problems such as untimely inspection and abnormal situations cannot be found and checked in time. When problems such as the increase of electricity load and partial oxidation of cable joints occur, the heat generation of the cable joints will increase, which can easily cause fires. [0003] In order to detect the failure of the power supply cabinet in time, the existing power supply cabinets are generally equipped with an intelligent monitoring system. The intell...
Claims
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Login to View More IPC IPC(8): G01R1/30G01R31/00H03F1/38
CPCG01R1/30G01R31/00H03F1/38
Inventor 刘荣伟
Owner 刘荣伟