CN102435953B - Power supply monitoring instrument of seismic data processing workstation - Google Patents

Abstract

The invention relates to a power supply monitoring instrument of a seismic data processing workstation. The power supply monitoring instrument is mainly used for solving the problems that a power supply of the existing seismic data processing workstation has no ripple detection function and voltage is out of a limit. The power supply monitoring instrument is characterized in that a voltage detection unit, which is constituted after connecting a reference voltage formation circuit with a voltage detection circuit, and a ripple detection unit, which is constituted after connecting a ripple detection and amplification circuit with a ripple processing circuit, are sequentially connected between a positive and negative power supply acquired signal input end and an alarm signal output end according to circuit connection rules; and control signals outputted by the voltage detection unit and the ripple detection unit are respectively amplified by a voltage conversion circuit and then outputted to a display buzzing circuit to be used as voltage over-limit and ripple over-limit alarm signals. The power supply monitoring instrument provided by the invention can effectively protect the power supply of the seismic data processing workstation, avoid the loss of seismic data and improve the accuracy of detection data.

Description

Seismic data processing workstation power monitor

technical field

The invention relates to an automatic protection device for the power supply of a seismic data processing workstation.

Background technique

Seismic data processing workstation is an important and expensive computer equipment. As computers are widely used in seismic data processing systems, it has become a very important task to detect the abnormality of the power supply of the system. Because the existing power detection device is not designed for seismic data processing workstations, the detection is too rough for seismic data processing workstations. Generally, it can only be detected when there is a large-scale abnormality in the power supply, and it cannot be accurately detected. Conditions where the voltage is out of range and when there is ripple in the power supply. In this way, it is very easy to cause data damage in the seismic data processing workstation, resulting in huge direct economic losses and immeasurable indirect losses.

Contents of the invention

In order to solve the existing technical problems raised by the background technology, the present invention provides a new type of power monitor for the power supply of the seismic data processing workstation. This power monitor can effectively protect the power of the seismic data processing workstation and avoid earthquakes. Loss of data and improve the accuracy of detection data.

The technical solution of the present invention is: the power monitor for seismic data processing workstations includes a voltage detection unit connected by a reference voltage forming circuit and a voltage detection circuit, and a ripple detection amplifier circuit connected by a ripple processing circuit. The ripple detection unit; the control signal output by the voltage detection unit and the ripple detection unit are respectively amplified by the voltage conversion circuit and output to the display buzzer circuit as an alarm signal for voltage overrun and ripple overrun; wherein, the The reference voltage forming circuit adopts the LM317 chip, and the voltage detection circuit adopts the LM393N chip, and the above-mentioned circuits are sequentially connected between the positive and negative power supply acquisition signal input terminals and the control signal output terminals according to the circuit connection rules; meanwhile, the reference voltage forming circuit The output end is divided by a voltage dividing resistor to form two connection ends, which are respectively connected to the No. 2 pin and the No. 5 pin of the voltage detection circuit; in addition, the No. 1 pin and the No. 7 pin of the voltage detection circuit are respectively Connect to the coupling signal input terminals of No. 1 and No. 2 optocouplers; the coupling signal output terminals of No. 1 and No. 2 optocouplers are used as the voltage overrun control signal output terminals; the ripple detection amplifier circuit and ripple processing circuit are composed of A triode amplifier circuit, a voltage amplifier circuit, and a set of filter voltage divider circuits composed of diodes, capacitors and 2 voltage divider resistors are sequentially connected according to the circuit connection rules between the positive and negative power supply acquisition signal input terminals and the control signal output terminals, and The triode driving circuit is composed of; wherein, the triode amplifying circuit adopts 2SC1815 chip, the voltage amplifying circuit adopts LF353N chip, and the described triode driving circuit adopts 2SA684 chip; in addition, the ripple voltage at the input terminal of the positive power acquisition signal is connected through a The capacitance is added to the input end of the triode amplifier circuit; the No. 1 pin of the voltage amplifier circuit is connected to the base of the triode drive circuit, and the No. 7 pin is connected to the forward current input end of the diode; The wave detection unit also includes a No. 3 optocoupler and a rectifier diode. The positive input terminal of the No. 3 optocoupler is connected to the No. 3 pin of the voltage amplifying circuit through a resistor, and the negative input terminal of the No. 3 optocoupler is connected to The connecting end of the voltage dividing resistor; the output end of the No. 3 optocoupler is connected to No. 5 pins and No. 6 pins of the voltage amplifying circuit through a rectifier diode respectively; the collector of the triode drive circuit is used as a ripple super Limit control signal output.

The invention has the following beneficial effects: the power monitor of the seismic data processing workstation works in a state of low voltage and low power consumption, so the work is stable, safe and reliable. This solves the problem that although the power supply of various instruments has various safety measures, because it works in a state of high voltage and high current, once damaged, all other safety measures will fail. Therefore, this kind of monitor is installed on the seismic data processing workstation. Finally, multiple types of DC power supply voltages can be monitored as needed to solve the problem of damage to other circuit components and rapid damage to power supplies with excessive power supply voltages in seismic data processing workstations, thereby protecting important data from loss. In addition, after using this kind of power monitor, it is not necessary to set up an additional power supply, but to use the power supply of the machine to be checked, which is very convenient. In addition, in order to enhance the reliability of the circuit, this abnormal alarm circuit uses +12V-1 and +12V-2 to supply power at the same time. As long as one of +12V-1 and +12V-2 is normal, the power supply monitor can work normally. Monitor the working status of the power supply at any time, and whether the circuits other than the power supply are overloaded, so as to prevent problems before they happen, and can effectively protect the power supply, so that technicians can find out when the power failure is very slight and repair it in time.

Description of drawings:

Fig. 1 is a block diagram of the present invention.

Fig. 2 is an electrical schematic diagram of the +12V-1 circuit in a specific embodiment of the present invention.

Fig. 3 is an electrical schematic diagram of a complete instrument in a specific embodiment of the present invention.

Detailed ways:

The present invention will be further described below in conjunction with accompanying drawing:

As shown in Figure 1, this kind of seismic data processing workstation power monitor includes a voltage detection unit composed of a reference voltage forming circuit and a voltage detection circuit connected, and a ripple detection amplifier circuit connected with a ripple processing circuit. A ripple detection unit; the control signals output by the voltage detection unit and the ripple detection unit are respectively amplified by the voltage conversion circuit and then output to the display buzzer circuit as an alarm signal for voltage overrun and ripple overrun.

Fig. 2 is an electrical schematic diagram of the +12V-1 road in a specific embodiment of the present invention, and the same principle applies to other roads. As shown in the figure, the reference voltage forming circuit U100 adopts the LM317 chip, and the voltage detection circuit U300 adopts the LM393N chip, and the above circuits are sequentially connected between the positive and negative power supply acquisition signal input terminals and the control signal output terminals according to the circuit connection rules; At the same time, the output terminal of the reference voltage forming circuit U100 forms two connection terminals after being divided by a voltage dividing resistor, which are respectively connected to the No. 2 pin and the No. 5 pin of the voltage detection circuit U300; in addition, the voltage detection circuit Pin 1 and pin 7 of U300 are respectively connected to the coupling signal input terminals of No. 1 and No. 2 optocouplers U3 and U4; the coupling signal output terminals of No. 1 and No. 2 optocouplers U3 and U4 are used as voltage overrun control signal output.

The ripple detection amplifying circuit and the ripple processing circuit are composed of a triode amplifying circuit Q1, a voltage amplifying circuit U900, and a set of diode D902, capacitor C900 and two voltage divider resistors R903 and R904 constitute a filter voltage divider circuit and triode drive circuit Q2; wherein, the transistor amplifier circuit Q1 adopts a 2SC1815 chip, and the voltage amplifier circuit U900 adopts an LF353N chip, so The triode drive circuit Q2 uses a 2SA684 chip.

In addition, the ripple voltage at the input terminal of the acquisition signal of the positive power supply is added to the input terminal of the triode amplifier circuit Q1 through a connection capacitor C5; the No. 1 pin of the voltage amplifier circuit U900 is connected to the base of the transistor drive circuit Q2, 7 No. pin is connected to the forward current input terminal of the diode D902.

In addition, the ripple detection unit also includes a No. 3 optocoupler U14 and a rectifier diode D014. The positive input terminal of the No. 3 optocoupler U14 is connected to the No. 3 pin of the voltage amplifying circuit U900 through a resistor. The negative input end of the optocoupler U14 is connected to the connection end of the voltage dividing resistor R904; the output end of the No. 3 optocoupler U14 is respectively connected to the No. 5 pin and the No. 6 tube of the voltage amplifying circuit U900 via the rectifier diode D014 pin; the collector of the triode drive circuit Q2 serves as the output terminal of the ripple overrun control signal.

The specific working process of this monitor is as follows: +12-1V voltage to be measured is sent to pin 3 and pin 6 of U300/LM393 through its power port. U300 is a voltage comparator. When the voltage is between pin 5 and pin 5, the circuit is set to ±3%, that is, when the voltage is adjustable between 11.64V and 12.36V, the light-emitting diodes in the optocoupler U3 and U4 are turned on, and the photosensitive diodes in U3 and U4 are turned on. The triode conducts, the photosensitive triode C in U3 and U4 is extremely low, D003 and D004 are cut off, U900A does not work, the sound and light alarm circuit and relay K do not work, and the relay K can be used to start or shut down, indicating + The 12-1V voltage is within the allowable range; if the voltage of pins 3 and 6 is not between the voltage of pin 2 and pin 5, that is, the voltage of +12V-1 deviates from the standard value and exceeds the limit, then the optocoupler U3 and U4 must have one of them cut off , as long as any one of U3 and U4 is cut off, the triode C of the cut-off optocoupler is extremely high, making the 2-pole transistor 1N4001 connected to the cut-off optocoupler conduct, so that pin 2 of U900 can be higher than its 3 The voltage of pin 1 of U900 outputs low voltage, and Q2 is turned on to make the sound and light alarm circuit and relay work, indicating that the +12-1V voltage exceeds the limit.

Fig. 3 is an electrical schematic diagram of a complete instrument in a specific embodiment of the present invention.

The working process of ripple detection is: the ripple voltage of +12-1V circuit is added to Q1 through C5 for first-stage amplification, and U900B for second-stage amplification. The amplified ripple voltage is rectified by D902, filtered by C900 and then added To the common point of R903 and R904, when the common point voltage of R903 and R904 is higher than 5.2V, U14 is cut off, D014 is turned on, so that pin 2 of U900 gets a voltage higher than pin 3, and pin 1 of U900 outputs a low voltage , so that the sound and light alarm circuit and the relay work, indicating that the ripple exceeds the limit.

This machine can make a single-sided circuit board with a length of 10cm and a width of 10cm. If you use patch components, you can make it smaller or make it according to your needs. Applied to the power supply of seismic data processing workstations, it can monitor the working status of the power supply at any time, and whether the circuits other than the power supply are overloaded, so as to prevent problems before they happen. The monitor works in a state of low voltage and low power consumption, so it works stably, safely and reliably. Although there are various safety measures for the power supply of various instruments, because it works in a state of high voltage and high current, once it is damaged, all other safety measures will be lost. failure, this machine can monitor various types of DC power supply voltages according to needs; this monitor does not need to set up an additional power supply, but uses the power supply of the machine to be checked, and in order to enhance the reliability of the circuit, this monitor uses +12V- 1 and +12V-2 supply power at the same time, as long as one of +12V-1 and +12V-2 is normal, the monitor can work normally; the cost of the monitor is very low, and the cost is about 100 yuan; the monitor is small in size and the smallest It can be made into 5cm×5cm×2cm; the monitor is easy to connect, only 10 wires are connected to the machine to be tested, and the color of the 10 pins corresponds to the color of the wires of the machine to be tested, so ordinary technicians can complete the installation Use; This monitor starts to monitor the healthy state of the power supply, and plays a protective role when it reaches the sub-healthy state. The monitoring accuracy can be adjusted according to needs.

The best way to implement it is to install it outside the power supply of the seismic data processing workstation and the computer power supply. When the power supply is replaced, the device should remain inside the original machine.

Claims (1)

1. A power monitor for a seismic data processing workstation, comprising a voltage detection unit formed by connecting a reference voltage forming circuit and a voltage detection circuit, and a ripple detection unit formed by connecting a ripple detection amplifier circuit and a ripple processing circuit The control signals output by the voltage detection unit and the ripple detection unit are respectively amplified by the voltage conversion circuit and then output to the display buzzer circuit as an alarm signal for voltage overrun and ripple overrun; Wherein, the reference voltage forming circuit (U100) adopts the LM317 chip, the voltage detection circuit (U300) adopts the LM393N chip, the reference voltage forming circuit (U100) and the voltage detection circuit (U300) are at the positive and negative power supply acquisition signal input terminals and The output terminals of the voltage overrun control signal are connected sequentially according to the circuit connection rules; at the same time, the output terminal of the reference voltage forming circuit (U100) is divided by a voltage dividing resistor to form two connection terminals, which are respectively connected to the voltage detection Pin 2 and pin 5 of the circuit (U300); in addition, pin 1 and pin 7 of the voltage detection circuit (U300) are respectively connected to the coupling signals of optocouplers 1 and 2 (U3, U4) The input terminal; the coupling signal output terminal of the No. 1 and No. 2 optocouplers (U3, U4) is used as the output terminal of the voltage overrun control signal; The ripple detection amplifier circuit and the ripple processing circuit are composed of a triode amplifier circuit (Q1), a voltage amplifier circuit ( U900), and a set of filter voltage divider circuit composed of diode (D902), capacitor (C900) and 2 voltage divider resistors (R903, R904), and triode drive circuit (Q2); wherein, the triode amplifier circuit (Q1) adopts 2SC1815 chip, the voltage amplifier circuit (U900) adopts LF353N chip, and the transistor drive circuit (Q2) adopts 2SA684 chip; In addition, the ripple voltage at the input terminal of the acquisition signal of the positive and negative power supply is added to the input terminal of the triode amplifier circuit (Q1) through a connection capacitor (C5); the No. 1 pin of the voltage amplifier circuit (U900) is connected to the transistor driver The base of the circuit (Q2), pin 7 is connected to the forward current input terminal of the diode (D902); In addition, the ripple detection unit also includes a No. 3 optocoupler (U14) and a rectifier diode (D014), and the positive input terminal of the No. 3 optocoupler (U14) is connected to the voltage amplifying circuit (U900) through a resistor. The No. 3 pin of the No. 3 optocoupler (U14) is connected to the connection end of the voltage dividing resistor (R904); the output terminals of the No. 3 optocoupler (U14) are respectively connected to the rectifier diode (D014) to pins 5 and 6 of the voltage amplifying circuit (U900); The collector of the triode drive circuit (Q2) serves as the output terminal of the ripple overrun control signal.

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