CN110806724B - CNC machine tool remote monitoring device - Google Patents

Abstract

The invention discloses a remote monitoring device of a numerical control machine, which comprises a waveform detection module, a conditioning noise reduction module and a filtering emission module, wherein the waveform detection module collects the signal waveform of a signal emission end in the working process of the remote monitoring device of the numerical control machine by using a wave detector J1 with the model number of AD 8313, the conditioning noise reduction module uses a conditioning circuit consisting of an operational amplifier AR1, an operational amplifier AR2, a capacitor C2 and a capacitor C3 to increase the open loop gain of a signal and stabilize the static working point of the signal, a triode Q1 is used for detecting the potential difference of output signals of the operational amplifier AR3 and the operational amplifier AR6, the output signals of the operational amplifier AR4 and the operational amplifier AR6 are finally input into a noise reduction circuit consisting of the operational amplifier AR5 and the triode Q2, the filtering emission module uses a filter circuit consisting of an inductor L1, a capacitor C4 and a capacitor C5 to filter the signal and sends the filtered signal, the remote monitoring carrier signal of the numerical control machine tool can be monitored and converted into a reference signal of a remote monitoring terminal.

Description

CNC machine tool remote monitoring device

technical field

The invention relates to the technical field of signal transmission, in particular to a remote monitoring device for a numerically controlled machine tool.

Background technique

At present, with the continuous development of intelligent technology, the use of electrical equipment has been greatly changed. CNC machine tools are commonly used equipment in factories. With the improvement of technology, CNC machine tools can be remotely monitored and operated. However, the remote monitoring signal of CNC machine tools The transmission is carrier transmission. When the instantaneous signal is too large and the signal produces repeated responses, it will cause the screen of the monitoring receiver to be stuck, and the system can only be shut down and restarted, which seriously affects the use of the remote monitoring device of the CNC machine tool.

SUMMARY OF THE INVENTION

In view of the above situation, in order to overcome the defects of the prior art, the purpose of the present invention is to provide a remote monitoring device for CNC machine tools, which can monitor the remote monitoring carrier signal of the CNC machine tool and convert it into a reference signal of the remote monitoring terminal.

Its technical solution is that a remote monitoring device for CNC machine tools includes a waveform detection module, a conditioning noise reduction module and a filter emission module. For the signal waveform of the signal transmitting end, the conditioning and noise reduction module uses the operational amplifier AR1, operational amplifier AR2, capacitor C2, and capacitor C3 to form a conditioning circuit to increase the open-loop gain of the signal, while stabilizing the static operating point of the signal, while using diodes D5, The diode D6 limits the signal, and then the signal is buffered by the operational amplifier AR3 and then input into the inverting input terminal of the operational amplifier AR6. The operational amplifier AR6 compares the output signals of the operational amplifier AR2 and the operational amplifier AR3, and uses the transistor Q1 to detect the operational amplifier. The potential difference between the output signals of the amplifier AR3 and the operational amplifier AR6, and finally the operational amplifier AR4 compares the emitter potential of the transistor Q1 with the output signal of the operational amplifier AR2. The output signals of the operational amplifier AR4 and the operational amplifier AR6 are finally input to the operational amplifier AR5, In the noise reduction circuit composed of the transistor Q2, to adjust the signal noise reduction, the filter transmitter module uses the inductor L1, the capacitor C4, and the capacitor C5 to form a filter circuit to filter the signal, and sends it to the remote monitoring terminal of the CNC machine tool through the signal transmitter E1.

Due to the adoption of the above technical solutions, the present invention has the following advantages compared with the prior art;

1. Use op amp AR1, op amp AR2, capacitor C2, and capacitor C3 to form a conditioning circuit to increase the open-loop gain of the signal, while stabilizing the static operating point of the signal, and use resistor R5 and resistor R6 to divide the voltage to provide bias for op amp AR1. Set the voltage, according to the capacity of the capacitor C2, the size of the resistor R4 can be properly adjusted, that is, the size of the open-loop gain of the op amp AR1, and the capacitor C3 and the resistor R6 can be used to realize the AC bypass of the non-inverting input terminal of the op amp AR2. , reduce the ripple of the output signal of the op amp AR2, and at the same time use the diode D5 and diode D6 to limit the signal to divide the voltage, and then buffer the signal through the op amp AR3 and input it into the inverting input of the op amp AR6 to ensure synchronization of signals;

2. The operational amplifier AR4 compares the emitter potential of the transistor Q1 with the output signal of the operational amplifier AR2. The operational amplifier AR4 and the operational amplifier AR6 compare the signals twice to ensure the accuracy of the signal. The operational amplifier AR4 and the operational amplifier AR6 The output signal is finally input into the noise reduction circuit composed of the op amp AR5 and the transistor Q2 to adjust the noise reduction of the signal to further ensure the stability of the signal. The filter circuit composed of the inductor L1, the capacitor C4 and the capacitor C5 is used to filter the signal, and the signal is transmitted through the signal transmitter. E1 is sent to the CNC machine tool remote monitoring terminal. When the instantaneous signal at the signal transmitter is too large, the waveform is abnormal at this time, that is, the detector J1 converts the signal waveform signal into a voltage signal abnormally, and the CNC machine tool remote monitoring terminal receives this reference. Electric signal, automatically adjust the signal receiving value to prevent the remote monitoring of CNC machine tools from blocking the screen.

Description of drawings

Fig. 1 is the waveform detection module diagram of the remote monitoring device of the numerical control machine tool of the present invention.

FIG. 2 is a diagram of a conditioning and noise reduction module of the remote monitoring device for a numerically controlled machine tool according to the present invention.

Fig. 3 is a filter transmitting module diagram of the remote monitoring device of the numerical control machine tool of the present invention.

Detailed ways

The foregoing and other technical contents, features and effects of the present invention will be clearly presented in the following detailed description of the embodiments with reference to FIGS. 1 to 3 . The structural contents mentioned in the following embodiments are all referenced to the accompanying drawings.

Embodiment 1, a remote monitoring device for CNC machine tools includes a waveform detection module, a conditioning noise reduction module, and a filter emission module. The waveform detection module uses a detector J1 with a model of AD 8313 to collect the data of the signal transmitter during operation in the remote monitoring device for CNC machine tools. Signal waveform, the detector J1 converts the signal waveform signal into a voltage signal output, the conditioning and noise reduction module uses the op amp AR1, op amp AR2 and capacitor C2, capacitor C3 to form a conditioning circuit to increase the open-loop gain of the signal, while stabilizing The signal is at the static operating point, and at the same time, the diode D5 and diode D6 are used to limit the signal, and then the signal is buffered by the operational amplifier AR3 and then input into the inverting input terminal of the operational amplifier AR6. The operational amplifier AR6 compares the operational amplifier AR2 and the operational amplifier. AR3 outputs the signal, and uses the transistor Q1 to detect the potential difference between the output signals of the operational amplifier AR3 and the operational amplifier AR6. Finally, the operational amplifier AR4 compares the emitter potential of the transistor Q1 with the output signal of the operational amplifier AR2. The output signal of AR6 is finally input into the noise reduction circuit composed of operational amplifier AR5 and transistor Q2 to adjust the signal noise reduction. E1 is sent to the remote monitoring terminal of the CNC machine tool;

The conditioning and noise reduction module uses the operational amplifier AR1, the operational amplifier AR2, the capacitor C2 and the capacitor C3 to form a conditioning circuit to increase the open-loop gain of the signal and stabilize the static operating point of the signal. AR1 provides bias voltage, and the size of resistor R4 can be appropriately adjusted according to the capacity of capacitor C2, that is, the size of the open-loop gain of AR1 of op amp, and capacitor C3 and resistor R6 are used to realize AC of non-inverting input terminal of AR2 of op amp. The function of bypass reduces the ripple of the output signal of the op amp AR2. At the same time, the diode D5 and diode D6 are used to limit the signal to divide the voltage. Then the signal is buffered by the op amp AR3 and then input to the inverting input of the op amp AR6. In the terminal, to ensure the synchronization of the signal, the operational amplifier AR6 compares the output signals of the operational amplifier AR2 and the operational amplifier AR3, and uses the transistor Q1 to detect the potential difference between the operational amplifier AR3 and the operational amplifier AR6 to prevent the operational amplifier AR6 The output signal is abnormal, resulting in inaccurate signals. Finally, the operational amplifier AR4 compares the emitter potential of the transistor Q1 with the output signal of the operational amplifier AR2. The operational amplifier AR4 and the operational amplifier AR6 compare the signals twice to ensure the accuracy of the signal. The output signals of the amplifier AR4 and the operational amplifier AR6 are finally input into the noise reduction circuit composed of the operational amplifier AR5 and the transistor Q2, and the signal noise reduction adjustment is performed to further ensure the stability of the signal;

The specific structure of the conditioning and noise reduction module, the non-inverting input terminal of the operational amplifier AR1 is connected to the resistor R5, one end of the resistor R6 and one end of the capacitor C3, the anode of the diode D5, the cathode of the diode D6, and the non-inverting input of the operational amplifier AR2. The inverting input terminal of op amp AR1 is connected to one end of capacitor C2 and resistor R4, the other end of resistor R5 is connected to the other end of capacitor C2, and the output terminal of op amp AR1 is connected to the other end of resistor R4 and one end of resistor R7. The other end of R7 is connected to one end of the resistor R8 and the inverting input end of the operational amplifier AR2, the output end of the operational amplifier AR2 is connected to the other end of the resistor R8 and one end of the resistor R11, the inverting input end of the operational amplifier AR4 and the operational amplifier AR2. The non-inverting input terminal of the amplifier AR6, the inverting input terminal of the operational amplifier AR6 is connected to one end of the resistor R10, the other end of the resistor R10 is connected to the collector of the transistor Q1, the output terminal of the operational amplifier AR3, and the non-inverting input of the operational amplifier AR3 The terminal is connected to the cathode of diode D5 and the anode of diode D6, the inverting input terminal of op amp AR3 is connected to one end of resistor R9, the other end of resistor R9 is grounded, and the base of transistor Q1 is connected to the output end of op amp AR6 and resistor R12 , one end of the capacitor C7 and the non-inverting input of the operational amplifier AR5, the other end of the resistor R12 is connected to the output of the operational amplifier AR4, the non-inverting input of the operational amplifier AR4 is connected to the emitter of the transistor Q1, and the inverting terminal of the operational amplifier AR5 The phase input terminal is connected to one end of the resistor R13 and the resistor R14, the other end of the resistor R13 is grounded, the other end of the resistor R14 is connected to the base of the transistor Q2, and the collector of the transistor Q2 is connected to the output of the operational amplifier AR5 and the other end of the capacitor C7 , the emitter of the transistor Q2 is connected to one end of the capacitor C6, and the other end of the capacitor C6 is grounded.

On the basis of the above scheme, the filter transmitting module uses the inductor L1, the capacitor C4, and the capacitor C5 to form a filter circuit to filter the signal, and sends it to the remote monitoring terminal of the CNC machine tool through the signal transmitter E1. When the instantaneous signal of the signal transmitter is too large When the waveform is abnormal at this time, the remote monitoring terminal of the CNC machine tool receives the reference signal and automatically adjusts the signal reception value to prevent the remote monitoring of the CNC machine tool from jamming the screen. At the output end, the other end of the inductor L1 is connected to one end of the resistor R16 and the capacitor C5, the other end of the resistor R15, the capacitor C4, and the capacitor C5 is grounded, and the other end of the resistor R16 is connected to the signal transmitter E1;

The waveform detection module selects the detector J1 whose model is AD 8313 to collect the signal waveform of the signal transmitter during operation in the remote monitoring device of the numerical control machine tool. The output terminal of J1 is connected to one end of the resistor R1, the other end of the resistor R1 is connected to the negative electrode of the zener tube D1 and one end of the resistor R2, the positive electrode of the zener tube D1 is grounded, and the other end of the resistor R2 is connected to the resistor R3 and one end of the capacitor C1. The other end of the capacitor C1 is grounded, and the other end of the resistor R3 is connected to the other end of the capacitor C2.

When the present invention is used specifically, the remote monitoring device for CNC machine tools includes a waveform detection module, a conditioning noise reduction module, and a filter emission module. The waveform detection module uses a detector J1 with a model of AD 8313 to collect working signals in the remote monitoring device for CNC machine tools. For the signal waveform of the transmitting end, the conditioning and noise reduction module uses the op amp AR1, the op amp AR2, the capacitor C2, and the capacitor C3 to form a conditioning circuit to increase the open-loop gain of the signal, while stabilizing the static operating point of the signal, using resistor R5, resistor R6 The voltage divider provides the bias voltage for the op amp AR1. According to the capacity of the capacitor C2, the size of the resistor R4 can be appropriately adjusted, that is, the open-loop gain of the op amp AR1 is adjusted. The capacitor C3 and the resistor R6 are used to realize the op amp. The AC bypass function of the non-inverting input terminal of AR2 reduces the ripple of the output signal of the op amp AR2. At the same time, the diode D5 and diode D6 are used to limit the signal to divide the voltage, and then the signal is buffered by the op amp AR3 and then input to the op amp. In the inverting input terminal of the AR6, the synchronization of the signal is ensured. The AR6 compares the output signals of the AR2 and AR3, and uses the transistor Q1 to detect the potential difference between the output signals of the AR3 and AR6. To prevent the abnormal output signal of the operational amplifier AR6, resulting in inaccurate signals, finally the operational amplifier AR4 compares the emitter potential of the transistor Q1 with the output signal of the operational amplifier AR2, and the operational amplifier AR4 and the operational amplifier AR6 compare the signals twice to ensure the signal The accuracy of the op amp AR4, op amp AR6 output signal is finally input into the noise reduction circuit composed of op amp AR5 and transistor Q2, to adjust the signal noise reduction, to further ensure the stability of the signal, the filter transmitter module uses inductance L1, capacitor C4 and capacitor C5 form a filter circuit to filter the signal, and send it to the remote monitoring terminal of the CNC machine tool through the signal transmitter E1.

The above is a further detailed description of the present invention in conjunction with the specific embodiments, and it cannot be considered that the specific implementation of the present invention is limited to this; , the expansion and the replacement of the operation method and data should all fall within the protection scope of the present invention.

Claims (3)

1. The remote monitoring device of the numerical control machine tool comprises a waveform detection module, a conditioning noise reduction module and a filtering emission module, and is characterized in that the waveform detection module collects the signal waveform of a signal emission end when the signal emission end works in the remote monitoring device of the numerical control machine tool by using a wave detector J1 with the model number of AD 8313, the conditioning noise reduction module uses an operational amplifier AR1, an operational amplifier AR2, a capacitor C2 and a capacitor C3 to form a conditioning circuit to increase the open-loop gain of a signal and stabilize the static working point of the signal, simultaneously uses a diode D5 and a diode D6 to limit the amplitude of the signal, then inputs the signal into an inverse input end of an operational amplifier AR6 after buffering the signal by using an operational amplifier AR3, the operational amplifier AR6 compares the output signals of the operational amplifier AR2 and the operational amplifier AR3, and uses a triode Q1 to detect the output signal potential difference of the operational amplifier AR3 and the operational amplifier AR6, and finally the operational amplifier AR, signals output by the operational amplifier AR4 and the operational amplifier AR6 are finally input into a noise reduction circuit consisting of the operational amplifier AR5 and the triode Q2 to reduce noise of the signals, and the filtering and transmitting module filters the signals by using a filtering circuit consisting of an inductor L1, a capacitor C4 and a capacitor C5 and transmits the signals to a remote monitoring terminal of the numerical control machine through a signal transmitter E1;

the conditioning noise reduction module comprises an operational amplifier AR1, wherein the non-inverting input end of the operational amplifier AR1 is connected with one end of a resistor R5 and R6, one end of a capacitor C3, the anode of a diode D5, the cathode of a diode D6 and the non-inverting input end of the operational amplifier AR6, the inverting input end of the operational amplifier AR6 is connected with one end of the capacitor C6 and the one end of a resistor R6, the other end of the resistor R6 is connected with the other end of the capacitor C6, the output end of the operational amplifier AR6 is connected with the other end of the resistor R6 and the non-inverting input end of the operational amplifier AR6, the inverting input end of the resistor R6 is connected with one end of the resistor R6, the non-inverting input end of the other triode Q6 of the resistor R6 and the cathode of the operational amplifier AR6, and the non-inverting input end of the operational amplifier AR6 are connected with the non-inverting input end of the diode D6, the non-inverting input end of the operational amplifier, The anode of the diode D6, the inverting input end of the operational amplifier AR3 is connected to one end of the resistor R9, the other end of the resistor R9 is grounded, the base of the triode Q1 is connected to the output end of the operational amplifier AR6, the resistor R12, one end of the capacitor C7 and the non-inverting input end of the operational amplifier AR5, the other end of the resistor R12 is connected to the output end of the operational amplifier AR4, the non-inverting input end of the operational amplifier AR4 is connected to the emitter of the triode Q1, the inverting input end of the operational amplifier AR5 is connected to one end of the resistor R13 and the resistor R14, the other end of the resistor R13 is grounded, the other end of the resistor R14 is connected to the base of the triode Q2, the collector of the triode Q2 is connected to the output end of the operational amplifier AR5 and the other end of the capacitor C7.

2. The remote monitoring device for the numerical control machine tool according to claim 1, wherein the filtering and transmitting module comprises an inductor L1, one end of the inductor L1 is connected with a resistor R15, one end of a capacitor C4 and the output end of an operational amplifier AR5, the other end of the inductor L1 is connected with a resistor R16 and one end of a capacitor C5, the other ends of the resistor R15, the capacitor C4 and the capacitor C5 are grounded, and the other end of the resistor R16 is connected with a signal transmitter E1.

3. The remote monitoring device of the numerical control machine tool according to claim 2, wherein the waveform detection module comprises a detector J1 with the model number AD 8313, a power supply end of a detector J1 is connected with +5V, a grounding end of a detector J1 is grounded, an output end of the detector J1 is connected with one end of a resistor R1, the other end of a resistor R1 is connected with a negative electrode of a voltage regulator tube D1 and one end of a resistor R2, an anode of a voltage regulator tube D1 is grounded, the other end of a resistor R2 is connected with one end of a resistor R3 and one end of a capacitor C1, the other end of a capacitor C1 is grounded, and the other end of a resistor R3 is connected with the other end.

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