Level conversion circuit in machine room monitoring system
A monitoring system and conversion circuit technology, applied in the direction of logic circuit interface device, logic circuit connection/interface layout, etc., can solve the problems of signal stability cannot be guaranteed, many components, high cost, etc., to improve anti-interference performance, element The effect of less components and low cost
Inactive Publication Date: 2017-05-10
邹昌金
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Problems solved by technology
At present, the computer room monitoring system involves many components and components when realizing signal conversion, and the cost is high, and the stability of the processed signal is often not guaranteed
Method used
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[0014] Such as figure 1 As shown, the level conversion circuit in the computer room monitoring system includes input signal line, signal filter module, resistor R2, resistor R3, resistor R4, resistor R5, resistor R6, resistor R7, amplifier A1, comparator A2, diode D1, The diode D2 and the output level signal line, the input and output ends of the signal filter module are respectively connected to the input signal line and the resistor R2, wherein the other end of the resistor R2 connected to the output end of the signal filter module is connected to the inverting input end of the amplifier A1 , the two ends of the resistor R3 are respectively connected to the inverting input and output of the amplifier A1, the resistor R4 is connected to the non-inverting input of the amplifier A1, and the other end is grounded, and the two ends of the resistor R5 are respectively connected to the output of the amplifier A1 and the comparator A2 The inverting input terminal of the resistor R6 ...
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The invention discloses a level conversion circuit in a machine room monitoring system, and the circuit comprises an input signal line, a signal filtering module, a resistor R2, a resistor R3, a resistor R4, a resistor R5, a resistor R6, an amplifier A1, a comparator A2, a diode D1, a diode D2, and an output level signal line. The input and output ends of the signal filtering module are respectively connected with the input signal line and the resistor R2, and the other end of the resistor R2 is connected with an inverted input end of the amplifier A1. Two ends of the resistor R5 are respectively connected with the output end of the amplifier A1 and the inverted input end of the comparator A2. One end of the resistor R6 is connected with the in-phase input end of the comparator A2, and the other end of the resistor R6 is grounded. The output level signal line is connected with the output end of the comparator A2. The positive electrode of the diode D1 and the negative electrode of the diode D2 are connected to a line between the signal filtering module and the resistor R2, and the negative electrode of the diode D1 and the positive electrode of the diode D2 are grounded. The circuit is simple in structure, employs fewer elements, is low in cost, and facilitates the conversion of a signal into a binary signal.
Description
technical field [0001] The invention relates to monitoring technology, in particular to a level conversion circuit in a computer room monitoring system. Background technique [0002] The computer room is the place where servers are stored for telecommunications, Netcom, mobile, two-line, electric power, government or enterprises, etc. The small ones are tens of square meters, usually with 20 to 30 cabinets, and the large ones are tens of thousands of square meters with thousands of cabinets, or even more , Various servers and minicomputers are usually placed in the computer room, such as IBM minicomputers, HP minicomputers, SUN minicomputers, and so on. The temperature, humidity and anti-static measures of the computer room have strict requirements, so the existing computer room is generally equipped with a monitoring system to monitor its temperature and humidity. Among them, when the signal collected by the monitoring system is used as a trigger signal to control the work...
Claims
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CPCH03K19/017509
Inventor 邹昌金
Owner 邹昌金