CN107342791A - The method that power supply and data are transmitted between mining geophone and substation - Google Patents

Abstract

The invention discloses a method for transmitting power and data between a mining vibration pickup and a substation. The substation includes a comparator 1, a resistor R1, a resistor R2, and a resistor R3. R5, resistance R6, including the following steps: set two power lines between the mining vibration pickup and the substation, one of which is the negative pole line, and the other is the positive pole line; A current-limiting resistor A and B are connected in series on the positive line; when the substation sends data, the current-limiting resistor A on the side of the substation is disturbed, which affects the voltage on the current-limiting resistor B, and the comparator 2 passes through after receiving the changed voltage. Compared with the divided voltage of resistor R5\resistor R6, the data voltage is restored; when the mining vibration pickup sends data, the current limiting resistor B is disturbed, which affects the voltage on the current limiting resistor A, and after comparator 1 receives the changed voltage By comparing with the divided voltage of resistor R1\resistor R2, the data voltage is restored. The invention has low construction cost and low construction difficulty.

Description

Method for transmitting power and data between mining vibration pickup and substation

technical field

The invention relates to a method for transmitting power and data between a mining vibration pickup and a substation.

Background technique

The vibration pickup is a device that converts mechanical energy into electrical energy. It quantizes the electrical energy signal to form a digital signal. Another important task is to send data to the substation. The traditional transmission methods have the following forms:

1. There are four cables connected between the vibration pickup and the substation, two of which are for the substation to supply power to the sensor to ensure the normal operation of the vibration pickup, and the other two transmit data signals.

2. The vibration pickup is powered separately, and an independent power supply is placed near the vibration pickup, and a two-core cable is connected from the substation to the vibration pickup for data transmission.

In short, although the above two methods can all be realized functionally, there are problems such as high cost and difficult construction.

Contents of the invention

The technical problem to be solved by the present invention is to overcome the defects of the prior art, and provide a method for transmitting power and data of mine vibration pickups that can reduce costs and is easy to construct.

In order to solve the above technical problems, the present invention provides a method for transmitting power and data between the mining vibration pickup and the substation, the substation includes a comparator 1, a resistor R1, a resistor R2, a resistor R3, and a capacitor C1. The mining vibration pickup includes a comparator 2, a resistor R5, a resistor R6, a resistor R7, a resistor R8, a capacitor C2, and a capacitor C3, and is characterized in that it includes the following steps:

Step 1: Set up two power lines between the mining vibration pickup and the substation, specifying that one of them is a negative line and the other is a positive line; the positive line on the side of the substation and the mining vibration pickup Connect a current limiting resistor A and B in series;

Step 2: When the substation sends data, the resistor R3 forms a data voltage, which disturbs the current-limiting resistor A on the side of the substation, driving the voltage on the current-limiting resistor A to change, passing through two power lines, affecting the mining pickup The voltage on the current-limiting resistor B on one side of the vibrator, and the comparator 2 restores the data voltage by comparing with the divided voltage of the resistor R5\resistor R6 after receiving the changed voltage;

Step 3: When the mining vibration pickup sends data, the resistor R7 forms a data voltage, which disturbs the current-limiting resistor B on one side of the mining vibration pickup, driving the voltage on the current-limiting resistor B to change, through two The power line affects the voltage on the current-limiting resistor A on the side of the substation. After receiving the changed voltage, the comparator 1 restores the data voltage by comparing with the divided voltage of the resistor R1\resistor R2.

The beneficial effects of the present invention are: the method for transmitting power and data between the mining vibration pickup and the substation provided by the present invention has low construction cost and low construction difficulty. When the length of two power lines is not greater than 500 meters, the data transmission The rate reaches 128K.

Description of drawings

Fig. 1 is a schematic flow chart of the present invention.

detailed description

The present invention will be described in detail below in conjunction with the accompanying drawings.

As shown in Figure 1, the method for transmitting power and data between the mining vibration pickup provided by the present invention and the substation, the substation includes a comparator 1, a resistor R1, a resistor R2, a resistor R3, and a capacitor C1, and the mining vibration pickup The comparator includes comparator 2, resistor R5, resistor R6, resistor R7, resistor R8, capacitor C2, and capacitor C3; the substation power supply voltage is 15V, and the capacitor C1 is 0.1μF, including the following steps:

Step 1: Set up two power lines between the mining vibration pickup and the substation, specifying that one of them is a negative line and the other is a positive line; the positive line on the side of the substation and the mining vibration pickup A current-limiting resistor A and B are connected in series with each other, and the two current-limiting resistors are both 220 Ω; the substation transmits its own electric power to the mining shock picker continuously through two power lines;

Step 2: When the substation sends data, the resistor R3 forms a data voltage, which disturbs the current-limiting resistor A, drives the voltage on the current-limiting resistor A to change, and affects the voltage on one side of the mining vibration pickup through two power lines. The voltage on the current-limiting resistor B, the divided voltage of resistor R5\resistor R6 takes the midpoint value of the changing voltage on the current-limiting resistor B, the comparator 2 receives the changed voltage, and compares it with the divided voltage of resistor R5/resistor R6 , to restore the data voltage; the capacitor C3 can smooth the comparison voltage;

Step 3: When the mining vibration pickup sends data, the resistor R7 forms a data voltage, which disturbs the current-limiting resistor B on one side of the mining vibration pickup, driving the voltage on the current-limiting resistor B to change, through two The power line affects the voltage on the current-limiting resistor A on the side of the substation, and the divided voltage of resistor R1\resistor R2 takes the midpoint value of the changing voltage on the current-limiting resistor A; after the comparator 1 receives the changed voltage, it passes and The voltage division of resistor R1\resistor R2 is compared to restore the data voltage; the resistance value of resistor R8 is 470Ω, and the value of capacitor C1 is 0.1μF, so as to control the current consumption on one side of the mining vibration pickup, so that the current is not greater than 35mA.

In this embodiment, when the length of the two power lines is not greater than 500 meters, the data transmission rate reaches 128K.

The above is only a preferred embodiment of the present invention, it should be pointed out that for those of ordinary skill in the art, some improvements can be made without departing from the principle of the present invention, and these improvements should also be regarded as the present invention. scope of protection.

Claims (1)

1. transmitting the method for power supply and data between a kind of mining geophone and substation, the substation includes comparator（1）, resistance （R1、R2、R3）, electric capacity（C1）, the mining geophone includes comparator（2）, resistance（R5、R6、R7、R8）, electric capacity（C2、 C3）, it is characterised in that comprise the following steps：

Step 1：Two power lines are set between the mining geophone and substation, it is specified that wherein one is negative line, it is another Bar is electrode line；Each current-limiting resistance of connecting on the electrode line of the substation with mining geophone side（A、B）；

Step 2：When the substation sends data, resistance（R3）Data voltage is formed, to the current-limiting resistance of substation side（A）Carry out Disturbance, drive current-limiting resistance（A）On voltage change, by two power lines, influence the current limliting of mining geophone side Resistance（B）On voltage, the comparator（2）Receive after the voltage of change by with resistance（R5）Resistance（R6）Intrinsic standoff ratio Compared with restoring data voltage；

Step 3：When the mining geophone sends data, resistance（R7）Data voltage is formed, to the limit of mining geophone side Leakage resistance（B）Disturbed, drive current-limiting resistance（B）On voltage change, by two power lines, influence substation side Current-limiting resistance（A）On voltage, the comparator（1）Receive after the voltage of change by with resistance（R1）Resistance（R2）'s Intrinsic standoff ratio is compared with restoring data voltage.