CN117978190A - Electronic detonator communication circuit - Google Patents
Electronic detonator communication circuit Download PDFInfo
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- CN117978190A CN117978190A CN202311868947.XA CN202311868947A CN117978190A CN 117978190 A CN117978190 A CN 117978190A CN 202311868947 A CN202311868947 A CN 202311868947A CN 117978190 A CN117978190 A CN 117978190A
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- 238000004891 communication Methods 0.000 title claims abstract description 53
- 230000003321 amplification Effects 0.000 claims abstract description 25
- 238000003199 nucleic acid amplification method Methods 0.000 claims abstract description 25
- 238000001914 filtration Methods 0.000 claims description 14
- 239000003990 capacitor Substances 0.000 claims description 7
- 238000001514 detection method Methods 0.000 abstract description 8
- 239000000284 extract Substances 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 7
- 238000005259 measurement Methods 0.000 description 2
- 230000006855 networking Effects 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 230000002238 attenuated effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000036039 immunity Effects 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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Abstract
The invention relates to an electronic detonator communication circuit, and belongs to the technical field of electronic circuits. The electronic detonator communication circuit comprises a low-pass filter module and a differential amplification module, wherein the input end of the low-pass filter module is connected with an input signal Vin, the output signal V2 of the low-pass filter module and the input signal Vin are both connected with the input end of the differential amplification module, and the differential amplification module amplifies the differential signal Vin-V2 of the input signal Vin and the output signal V2 of the low-pass filter module to generate an electronic detonator communication signal Vout. The electronic detonator communication signal Vout output by the circuit eliminates direct current bias, extracts alternating current communication signals, avoids current exceeding the current detection range of equipment, can be applied to a network of the number of electronic detonators, and improves the load number of detonating equipment.
Description
Technical Field
The invention relates to the technical field of electronic circuits, in particular to the technical field of electronic detonators, and particularly relates to an electronic detonator communication circuit.
Background
The electronic detonator uses the delay chip to replace chemical delay powder in the traditional detonator, and has the advantages of high delay precision, good safety, network detection and the like. For compatibility with conventional detonators, electronic detonators are typically like conventional detonators, employing a 2-wire networking approach. The two buses need to be capable of completing the functions of communication and power supply, so that a control chip on the electronic detonator can complete related operations of the detonator, and therefore, the electronic detonator usually adopts voltage and current changes to communicate with control equipment. The use of current variations to communicate with the control device generally provides better immunity to interference. However, since each electronic detonator has a quiescent power consumption current, after the number of electronic detonators in the network has increased to some extent, the current on the bus exceeds the current detection range of the device, as shown in fig. 1. In this regard, if the detection range of the device is directly enlarged, the accuracy of signal detection is affected, thereby limiting the networking scale of the electronic detonator.
Therefore, how to provide an electronic detonator communication circuit capable of eliminating dc bias and extracting ac communication signals is a problem to be solved in the art.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provide the electronic detonator communication circuit capable of eliminating direct current bias and extracting alternating current communication signals.
In order to achieve the above object, an electronic detonator communication circuit of the present invention has the following constitution:
The electronic detonator communication circuit comprises a low-pass filtering module and a differential amplifying module, wherein the input end of the low-pass filtering module is connected with an input signal Vin, the output signal V2 of the low-pass filtering module and the input signal Vin are both connected with the input end of the differential amplifying module, and the differential amplifying module amplifies the differential signal Vin-V2 of the input signal Vin and the output signal V2 of the low-pass filtering module to generate an electronic detonator communication signal Vout.
The electronic detonator communication circuit further comprises a buffer, wherein the input end of the buffer is connected with the input signal Vin, the output signal V1 of the buffer is connected with the input end of the differential amplification module, and the differential amplification module amplifies differential signals V1-V2 of the output signal V1 of the buffer and the output signal V2 of the low-pass filtering module to generate the electronic detonator communication signal Vout.
In the electronic detonator communication circuit, the buffer comprises a first operational amplifier U1, wherein the forward input end of the first operational amplifier U1 is connected with the input signal Vin, the output end of the first operational amplifier U1 is an output signal V1 of the buffer, and the output signal V1 of the buffer is connected with the reverse input end of the first operational amplifier U1;
The low-pass filter module comprises a second operational amplifier U2, a zeroth capacitor C0 and a zeroth resistor R0, wherein the positive input end of the second operational amplifier U2 is connected with the input signal Vin, the output end of the second operational amplifier U2 generates an output signal V2 of the low-pass filter module through the zeroth resistor R0, and the output signal V2 of the low-pass filter module is connected with the reverse input end of the second operational amplifier U3 and is grounded through the zeroth capacitor C0;
The differential amplification module comprises a third operational amplifier U3 and first to fourth resistors R1 to R4, and an output signal V1 of the buffer is connected with an inverted input end of the third operational amplifier U3 through the first resistor R1; the output signal V2 of the low-pass filter module is connected with the positive input end of the third operational amplifier U3 through the third resistor R3; the positive input end of the third operational amplifier U3 is grounded through the fourth resistor R4; the output end of the third operational amplifier U3 generates the electronic detonator communication signal Vout, and is connected with the reverse input end of the third operational amplifier U3 through the second resistor R2.
The resistance values of the first to fourth resistors R1 to R4 in the electronic detonator communication circuit meet R1/R2=R3/R4.
The low-pass filtering module of the electronic detonator communication circuit comprises an analog-to-digital converter ADC, a processor MCU and a digital-to-analog converter DAC, wherein the processor MCU controls the analog-to-digital converter ADC to sample the input signal Vin in a direct current stage when the input signal Vin has no signal, records the current direct current voltage Vdc, and controls the digital-to-analog converter DAC to output a direct current bias voltage, namely an output signal V2 of the low-pass filtering module in a receiving stage when the input signal Vin has a signal.
The electronic detonator communication circuit comprises a low-pass filter module and a differential amplification module, wherein the input end of the low-pass filter module is connected with an input signal Vin, the output signal V2 of the low-pass filter module and the input signal Vin are both connected with the input end of the differential amplification module, and the differential amplification module amplifies the differential signal Vin-V2 of the input signal Vin and the output signal V2 of the low-pass filter module to generate an electronic detonator communication signal Vout. The electronic detonator communication signal Vout output by the circuit eliminates direct current bias, extracts alternating current communication signals, avoids current exceeding the current detection range of equipment, can be applied to a network of the number of electronic detonators, and improves the load number of detonating equipment.
Drawings
FIG. 1 is a schematic diagram of an electronic detonator network current;
FIG. 2 is a schematic diagram of an electronic detonator communication circuit of the present invention;
Fig. 3 is a schematic circuit diagram of a first embodiment of the electronic detonator communication circuit of the present invention;
FIG. 4 is a signal comparison schematic diagram of a first embodiment of an electronic detonator communication circuit of the present invention;
fig. 5 is a schematic circuit diagram of a second embodiment of the electronic detonator communication circuit of the present invention;
Fig. 6 is a signal comparison schematic diagram of a second embodiment of the electronic detonator communication circuit of the present invention.
Detailed Description
In order to make the technical contents of the present invention more clearly understood, the following examples are specifically described.
Fig. 1 is a schematic structural diagram of an electronic detonator communication circuit according to the present invention.
In one embodiment, the electronic detonator communication circuit comprises a low-pass filter module and a differential amplification module, wherein the input end of the low-pass filter module is connected with an input signal Vin, the output signal V2 of the low-pass filter module and the input signal Vin are both connected with the input end of the differential amplification module, and the differential amplification module amplifies the differential signal Vin-V2 of the input signal Vin and the output signal V2 of the low-pass filter module to generate an electronic detonator communication signal Vout.
In another alternative embodiment, the electronic detonator communication circuit further includes a buffer, an input end of the buffer is connected to the input signal Vin, an output signal V1 of the buffer is connected to an input end of the differential amplification module, and the differential amplification module amplifies the differential signal V1-V2 of the output signal V1 of the buffer and the output signal V2 of the low-pass filter module to generate the electronic detonator communication signal Vout.
As shown in fig. 3, in the electronic detonator communication circuit, the buffer includes a first operational amplifier U1, a forward input end of the first operational amplifier U1 is connected to the input signal Vin, an output end of the first operational amplifier U1 is an output signal V1 of the buffer, and the output signal V1 of the buffer is connected to an inverse input end of the first operational amplifier U1; the low-pass filter module comprises a second operational amplifier U2, a zeroth capacitor C0 and a zeroth resistor R0, wherein the positive input end of the second operational amplifier U2 is connected with the input signal Vin, the output end of the second operational amplifier U2 generates an output signal V2 of the low-pass filter module through the zeroth resistor R0, and the output signal V2 of the low-pass filter module is connected with the reverse input end of the second operational amplifier U3 and is grounded through the zeroth capacitor C0; the differential amplification module comprises a third operational amplifier U3 and first to fourth resistors R1 to R4, and an output signal V1 of the buffer is connected with an inverted input end of the third operational amplifier U3 through the first resistor R1; the output signal V2 of the low-pass filter module is connected with the positive input end of the third operational amplifier U3 through the third resistor R3; the positive input end of the third operational amplifier U3 is grounded through the fourth resistor R4; the output end of the third operational amplifier U3 generates the electronic detonator communication signal Vout, and is connected with the reverse input end of the third operational amplifier U3 through the second resistor R2.
In another embodiment, as shown in fig. 5, the low-pass filtering module includes an analog-to-digital converter ADC, a processor MCU and a digital-to-analog converter DAC, where the processor MCU controls the analog-to-digital converter ADC to sample the input signal Vin in a dc stage where the input signal Vin has no signal, records the current dc voltage Vdc, and controls the digital-to-analog converter DAC to output a dc offset voltage, i.e., the output signal V2 of the low-pass filtering module in a receiving stage where the input signal Vin has a signal.
In the application of the present invention, as shown in fig. 2, an input signal Vin obtained from an electronic detonator initiation control network is respectively input into a buffer and low-pass filtered to obtain V1 and V2, and then V1 and V2 are differentially amplified to obtain Vout, so that an input signal outside a measurement range can be converted into a signal to be measured within the measurement range. And the amplification factor can be adjusted according to actual conditions, so that the detection sensitivity is increased.
Wherein, the buffer is an unnecessary component and can directly connect Vin to the differential amplifying module.
As shown in fig. 3, where U1, U2, and U3 are 3 operational amplifiers, the output of the operational amplifier U1 is connected to the negative input, and as a unit gain operational amplifier, the operational amplifier U2, the resistor R0, and the capacitor C0 form a low-pass filter. The operational amplifier U3 and the resistors R1, R2, R3, R4 together constitute a differential amplifier.
When the device works, v1=vin, and V2 weakens an alternating current signal in Vin through U2 low-pass filtering, and retains a direct current signal in Vin. And finally, amplifying the differential signals of V1-V2 through a differential amplifier formed by U3. Finally, the effects of eliminating direct current signals and amplifying alternating current signals are achieved.
As shown in fig. 4, it is assumed that Vin is formed by superimposing a dc signal Vdc and an effective signal Vac, that is:
Vin＝Vdc+Vac
Vin is attenuated or filtered out by the low pass filter, the effective signal Vac, and therefore:
V2≈Vdc
the output of the differential amplifier is:
Taking R 1/R2＝R3/R4, then:
according to the formula, the values of the resistors R1 and R2 can be adjusted to further amplify the amplitude of the effective signal, so that the anti-interference capability of demodulation is improved.
In another embodiment, as shown in fig. 5, it is assumed that Vin is composed of a direct current signal Vdc and an alternating current signal Vac. In the implementation mode, in the direct current stage when Vin has no signal, an MCU is used for controlling an analog-to-digital converter ADC to sample Vin, and the current direct current voltage, namely Vdc, is recorded. In the signal receiving stage, the MCU is used for controlling the DAC to output direct current bias, and the output voltage V2 is equal to Vdc. The differential amplifier differential amplifies the two inputs at this time. The output voltage Vout is:
v out＝N(Vin-V2)＝NVac where N is the amplification of the differential amplifier. The output voltage Vout is shown in fig. 6.
In summary, by using the electronic detonator communication circuit of the invention, the direct current bias can be eliminated in the device communication demodulation process, thereby expanding the communication capacity of the detonating device and improving the number of the electronic detonator network.
The electronic detonator communication circuit comprises a low-pass filter module and a differential amplification module, wherein the input end of the low-pass filter module is connected with an input signal Vin, the output signal V2 of the low-pass filter module and the input signal Vin are both connected with the input end of the differential amplification module, and the differential amplification module amplifies the differential signal Vin-V2 of the input signal Vin and the output signal V2 of the low-pass filter module to generate an electronic detonator communication signal Vout. The electronic detonator communication signal Vout output by the circuit eliminates direct current bias, extracts alternating current communication signals, avoids current exceeding the current detection range of equipment, can be applied to a network of the number of electronic detonators, and improves the load number of detonating equipment.
In this specification, the invention has been described with reference to specific embodiments thereof. It will be apparent that various modifications and variations can be made without departing from the spirit and scope of the invention. The specification and drawings are, accordingly, to be regarded in an illustrative rather than a restrictive sense.
Claims (5)
1. An electronic detonator communication circuit is characterized by comprising a low-pass filtering module and a differential amplifying module,
The input end of the low-pass filter module is connected with an input signal (Vin), the output signal (V2) of the low-pass filter module and the input signal (Vin) are both connected with the input end of the differential amplification module, and the differential amplification module amplifies the differential signal (Vin-V2) of the input signal (Vin) and the output signal (V2) of the low-pass filter module to generate an electronic detonator communication signal (Vout).
2. The electronic detonator communication circuit of claim 1 further comprising a buffer, an input of said buffer being connected to said input signal (Vin), an output signal (V1) of said buffer being connected to an input of said differential amplification module, said differential amplification module amplifying a differential signal (V1-V2) of said output signal (V1) of said buffer and an output signal (V2) of said low pass filter module to produce said electronic detonator communication signal (Vout).
3. The electronic detonator communication circuit of claim 2 wherein,
The buffer comprises a first operational amplifier (U1), wherein the positive input end of the first operational amplifier (U1) is connected with the input signal (Vin), the output end of the first operational amplifier is an output signal (V1) of the buffer, and the output signal (V1) of the buffer is connected with the negative input end of the first operational amplifier (U1);
the low-pass filter module comprises a second operational amplifier (U2), a zeroth capacitor (C0) and a zeroth resistor (R0), wherein the positive input end of the second operational amplifier (U2) is connected with the input signal (Vin), the output end of the second operational amplifier generates an output signal (V2) of the low-pass filter module through the zeroth resistor (R0), and the output signal (V2) of the low-pass filter module is connected with the reverse input end of the second operational amplifier (U3) and is grounded through the zeroth capacitor (C0);
The differential amplification module comprises a third operational amplifier (U3) and first to fourth resistors (R1 to R4), and an output signal (V1) of the buffer is connected with the reverse input end of the third operational amplifier (U3) through the first resistor (R1); the output signal (V2) of the low-pass filtering module is connected with the positive input end of the third operational amplifier (U3) through the third resistor (R3); the positive input end of the third operational amplifier (U3) is grounded through the fourth resistor (R4); the output end of the third operational amplifier (U3) generates the electronic detonator communication signal (Vout) and is connected with the reverse input end of the third operational amplifier (U3) through the second resistor (R2).
4. An electronic detonator communication circuit as claimed in claim 3, wherein the resistance values of said first to fourth resistors (R1 to R4) satisfy R1/r2=r3/R4.
5. The electronic detonator communication circuit of claim 1 wherein,
The low-pass filtering module comprises an analog-to-digital converter (ADC), a processor (MCU) and a digital-to-analog converter (DAC), wherein in a direct-current stage that an input signal (Vin) is free of signals, the processor (MCU) controls the analog-to-digital converter (ADC) to sample the input signal (Vin) and record the current direct-current voltage (Vdc), and in a receiving stage that the input signal (Vin) is provided with signals, the processor (MCU) controls the digital-to-analog converter (DAC) to output direct-current bias voltage, namely an output signal (V2) of the low-pass filtering module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311868947.XA CN117978190A (en) | 2023-12-29 | 2023-12-29 | Electronic detonator communication circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311868947.XA CN117978190A (en) | 2023-12-29 | 2023-12-29 | Electronic detonator communication circuit |
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| Publication Number | Publication Date |
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| CN117978190A true CN117978190A (en) | 2024-05-03 |
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| CN202311868947.XA Pending CN117978190A (en) | 2023-12-29 | 2023-12-29 | Electronic detonator communication circuit |
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| CN (1) | CN117978190A (en) |
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- 2023-12-29 CN CN202311868947.XA patent/CN117978190A/en active Pending
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