Synchronous control device and method for small refractometer and digital electronic detonator

Abstract

The invention provides a synchronous control device and method for a small refractometer and a digital electronic detonator, a digital electronic detonator initiator of the device transmits an initiation instruction to a delay system and an initiation instruction control circuit at the same time, the delay system delays according to preset delay time, and after the preset delay time is reached, the initiation instruction control circuit controls the initiation instruction to control the initiation instruction. Transmitting a detonation instruction to a signal synchronization circuit, and triggering a small refraction instrument to start signal acquisition; the detonation instruction control circuit controls the digital electronic detonator decoding circuit to decode after receiving a detonation instruction, the digital electronic detonator decoding circuit detonates the digital electronic detonator after decoding is completed, and synchronization of excitation of the digital electronic detonator and collection of the small refraction instrument is achieved. According to the small refractometer and digital electronic detonator synchronous control device and method, collection and excitation synchronization of the small refractometer and the digital electronic detonator is achieved, and the excitation precision meets the seismic exploration production requirement.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of oil exploration, in particular to a small refraction instrument and digital electronic detonator synchronous control device and method. BACKGROUND

[0002] In shallow seismic exploration, the small refraction instrument is mainly used to measure the thickness of the shallow low-velocity zone and the velocity of seismic waves in the low-velocity zone, providing a basis for seismic exploration data processing. In the use of small refraction instrument for shallow seismic exploration, when the electric detonator is used as the excitation source, the explosion box can produce 400V high-voltage initiation electric detonator; at the same time of initiating the electric detonator, the small refraction instrument is started to collect data, and the excitation and collection are synchronized.

[0003] At present, digital electronic detonators are popularized in the field of seismic exploration, and the use of electric detonators is prohibited. In this case, the existing explosion box can start the small refraction instrument to collect data, but cannot initiate the digital electronic detonator, and cannot complete the synchronization of excitation and collection.

[0004] The digital electronic detonator has the characteristics of anti-AC and DC, anti-static, anti-interference, reducing safety accidents, realizing online detection, effectively guaranteeing the blasting quality, realizing flow control, and high safety and reliability. The digital electronic detonator has its own special initiator to complete the information uploading, management and initiation of the digital electronic detonator.

[0005] The digital electronic detonator is mainly applied to the field of engineering blasting, and there is still certain limitation in the field of seismic exploration. The initiation of the digital electronic detonator has a special initiator, but the initiator cannot start the small refraction instrument to collect data synchronously, and cannot complete the synchronization of excitation and collection. At the same time, the delay of the digital electronic detonator is a disadvantage for seismic exploration, which requires the initiation of the digital electronic detonator to be carried out at the same time as the collection, and has certain requirements for the delay of explosion. At present, when the digital electronic detonator is used as the seismic source, it is impossible to use the small refraction instrument for shallow seismic exploration.

[0006] In the Chinese patent application with application number CN201921881803.7, a high-voltage explosion box circuit for generating a seismic instrument trigger signal is disclosed, which solves the limitations of the prior art that the high-voltage output end of the explosion box detonator is not completely isolated from the explosion box circuit, and the remote voltage amplitude is insufficient. The utility model discloses a high-voltage energy storage circuit, a high-voltage circuit and two output circuit branches P and Q of the high-voltage circuit which are sequentially turned on. The branch Q further includes a resistance voltage divider network, an isolation optocoupler and a seismic instrument interface socket which are sequentially turned on from the output end of the high-voltage circuit. The utility model adopts high-voltage circuit isolation technology, which is safe, efficient and durable in use, and can be easily connected with common small refraction instruments, 428 seismic instruments and other various seismic instruments for field seismic exploration, and can be applied to harsh field working environment.

[0007] In the Chinese patent application with the application number: CN201220686618.4, it relates to a data acquisition device for micro-logging data acquisition and a seismic wave excitation device. The data acquisition device for micro-logging data acquisition is characterized by comprising: a non-explosive seismic wave excitation device, including a hammer body and a pad; a geophone, detecting the seismic wave excited by the non-explosive seismic wave excitation device and converting the detected seismic wave into an electrical signal; and a signal acquisition device, connected with the geophone, to receive the electrical signal from the geophone. The data acquisition device and the seismic wave excitation device overcome the problem of using explosive sources in traditional micro-logging data acquisition, and can more accurately obtain the first break time.

[0008] In the Chinese patent application with the application number: CN201010249113.7, it relates to a multi-wave excitation method for near-surface investigation. It mainly solves the problem that the mode of receiving by downhole three-component geophone after ground excitation used in the existing transverse wave near-surface investigation method has poor measurement effect when applied in Hailaer Basin. Its characteristics are: after the excitation well is completed, the micro-logging cable fixed with several electric detonators is lowered into the well, and is pushed tightly by the "U" shaped pusher; the wellhead of the ground excitation well is sequentially connected with conventional longitudinal wave geophone and several three-component geophones to form linear arrangement receiving, with the X component direction pointing to the wellhead; the corresponding seismograph receives and sends the measurement signal to the computer for interpretation, wherein the seismograph does not perform filtering processing on the measurement signal. It has the characteristics of simple operation process, high construction efficiency, low cost, stable excitation energy, good data quality and high precision. It can also realize high-density acquisition, improve the precision and accuracy of near-surface structure description, and provide rich information for near-surface absorption and attenuation compensation.

[0009] The above prior art has great difference from the present application, and does not involve the technical problem of synchronization of small refraction instrument and digital electronic detonator, therefore we invented a new small refraction instrument and digital electronic detonator synchronization control device and method. SUMMARY

[0010] The purpose of the present application is to provide a small refraction instrument and digital electronic detonator synchronization control device and method which realizes the synchronization of small refraction instrument and digital electronic detonator acquisition and excitation, and the excitation precision meets the requirements of seismic exploration production.

[0011] The object of the present application can be achieved by the following technical measures: a small refraction instrument and digital electronic detonator synchronous control device, the small refraction instrument and digital electronic detonator synchronous control device comprising a delay system, a signal synchronization circuit, a detonation instruction control circuit and a digital electronic detonator decoding circuit, the digital electronic detonator initiator transmits detonation instructions to the delay system and the detonation instruction control circuit connected thereto, the delay system receives the detonation instructions and delays according to the preset delay time, and transmits the detonation instructions to the signal synchronization circuit connected to the small refraction instrument after reaching the preset delay time, and the signal synchronization circuit triggers the small refraction instrument to start signal collection; the digital electronic detonator decoding circuit is connected between the detonation instruction control circuit and the digital electronic detonator, the detonation instruction control circuit receives the detonation instructions, controls the digital electronic detonator decoding circuit to decode, and the digital electronic detonator decoding circuit detonates the digital electronic detonator after decoding, realizing the synchronization of digital electronic detonator excitation and small refraction instrument collection.

[0012] The object of the present application can also be achieved by the following technical measures:

[0013] The signal synchronization circuit comprises a first inverter circuit, the input end of the first inverter circuit is connected to the delay system, and the small refraction instrument needs to be triggered by a closing signal, the small refraction instrument is connected to the output end of the first inverter circuit, and the closing signal output by the first inverter circuit triggers the small refraction instrument to start signal collection.

[0014] The small refraction instrument and digital electronic detonator synchronous control device further comprises a second inverter circuit, the input end of the second inverter circuit is connected to the output end of the first inverter circuit, and the small refraction instrument needs to be triggered by a pulse, the small refraction instrument is connected to the output end of the second inverter circuit, and the pulse signal output by the second inverter circuit triggers the small refraction instrument to start signal collection.

[0015] The signal synchronization circuit further comprises a controllable switch, the power supply end of the first inverter circuit is connected to the 5V power supply output by the digital electronic detonator initiator, the input end is connected to the control signal output by the digital electronic detonator initiator, one way of the output of the first inverter is as a 5V negative edge trigger signal output, and the other way is as a control signal of the controllable switch, and the output end of the first inverter is connected to the input end of the second inverter.

[0016] The power supply end of the second inverter circuit is connected to the 5V power supply output by the digital electronic detonator initiator, the input end is connected to the output end of the first inverter, and the output end is as a 5V positive edge trigger signal output.

[0017] The power end of the controllable switch is connected to the 5V power supply of the digital electronic detonator initiator output, the input control end is connected to the output end of the first inverter, when the input control end is high level, the normally closed end of the controllable switch is turned on, and the common end is disconnected with the normally open end; when the input control end is low level, the common end of the controllable switch is connected with the normally open end, and the common end is disconnected with the normally closed end.

[0018] The delay time preset in the delay system is the decoding delay time of the electronic detonator tested in advance.

[0019] The object of the application can also be achieved by the following technical measures: a small refractometer and digital electronic detonator synchronization control method, characterized in that the small refractometer and digital electronic detonator synchronization control method adopts a small refractometer and digital electronic detonator synchronization control device, comprising:

[0020] Step 1, the digital electronic detonator initiator transmits the detonation instruction to the delay system and the detonation instruction control circuit at the same time;

[0021] Step 2, after receiving the detonation instruction transmitted by the digital electronic detonator initiator, the delay system delays according to the decoding delay time of the digital electronic detonator, and transmits the detonation instruction to the signal synchronization circuit after reaching the delay time, and the signal synchronization circuit triggers the small refractometer to start signal collection;

[0022] Step 3, after receiving the detonation instruction transmitted by the digital electronic detonator initiator, the detonation instruction control circuit controls the digital electronic detonator decoding circuit to decode, and the digital electronic detonator decoding circuit detonates the digital electronic detonator after completing decoding, so as to realize the synchronization of the digital electronic detonator excitation and the small refractometer collection.

[0023] The object of the application can also be achieved by the following technical measures:

[0024] The small refractometer and digital electronic detonator synchronization control method further comprises, before step 1, testing the decoding delay time of the electronic detonator, and inputting the decoding delay time to the delay system.

[0025] In step 2, when the small refractometer needs to use the closed signal trigger, the small refractometer is connected to the output end of the first inverter circuit, and the closed signal output by the first inverter circuit triggers the small refractometer to start signal collection.

[0026] In step 2, when the small refractometer needs to use the pulse trigger, the small refractometer is connected to the output end of the second inverter circuit, and the pulse signal output by the second inverter circuit triggers the small refractometer to start signal collection.

[0027] The small refraction instrument and the digital electronic detonator synchronous control device and method in the application are based on the output signal of the digital electronic detonator initiator and the operation of the initiator, improve the versatility and synchronization accuracy of the digital electronic detonator initiator, and realize high-precision synchronization of the digital electronic detonator in the shallow seismic exploration construction process. Through indoor and field tests, the excitation accuracy meets the requirements of shallow seismic exploration production. The small refraction instrument and the digital electronic detonator synchronous control device solve the problem of synchronization of the small refraction instrument and the digital electronic detonator in the application of the small refraction instrument and the digital electronic detonator in shallow seismic exploration, realize the synchronization of the small refraction instrument and the digital electronic detonator, and the excitation accuracy meets the requirements of seismic exploration production. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 The figure is a structural schematic diagram of a specific embodiment of the small refraction instrument and the digital electronic detonator synchronous control device of the application.

[0029] Figure 2 The figure is a circuit connection schematic diagram of the electronic detonator special initiator and the inverter in a specific embodiment of the application. DETAILED DESCRIPTION

[0030] It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the application. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the application belongs.

[0031] It should be noted that the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit the exemplary embodiments according to the application. As used herein, the singular form is intended to include the plural form unless the context clearly indicates otherwise, and it should also be understood that when the terms "comprise" and / or "include" are used in the specification, there is a presence of the features, steps, operations and / or combinations thereof.

[0032] In order to meet the requirements of small refraction instrument and digital electronic detonator synchronous excitation and excitation accuracy, the trigger mode of the existing small refraction instrument is investigated. In general, the small refraction instrument uses closed signal trigger, and a small number of small refraction instruments use pulse trigger. In order to improve the versatility of the device, the signal output to trigger the small refraction instrument needs to be designed as a closed signal and a pulse signal, and different signals are connected according to different instruments.

[0033] The digital electronic detonator needs networking, uploading information and other work to be completed by the digital electronic detonator initiator, the detonation signal sent by the initiator to the digital electronic detonator explosion delay time cannot meet the needs of seismic exploration, and higher synchronization accuracy is needed, the invention designs a more accurate synchronization method, in general, it is considered that the detonator sends a detonation signal at the same time, and the instrument starts to collect, because the digital electronic detonator has a certain delay after the detonation command is sent, we can test the delay of the digital electronic detonator, and the signal of the starting instrument is also delayed in the system, the delay amount is consistent with the delay time of the digital electronic detonator, so that the instrument collection can be triggered at the moment of the detonation of the digital electronic detonator, so that the synchronization accuracy of detonation and collection is higher, and the delay accuracy of the system reaches microseconds, and the delay can be set through software.

[0034] The small refraction instrument and the digital electronic detonator synchronization control device comprises a delay system, a signal synchronization circuit, a detonation instruction control circuit and a digital electronic detonator decoding circuit, the delay system is connected to the digital electronic detonator initiator, after receiving the detonation instruction transmitted by the digital electronic detonator initiator, the delay is carried out according to the preset delay time, and after the preset delay time is reached, the detonation instruction is transmitted to the signal synchronization circuit, and the signal synchronization circuit triggers the small refraction instrument to start signal collection.

[0035] The signal synchronization circuit comprises a first inverter circuit and a second inverter circuit, the delay system is connected to the input end of the first inverter circuit, when the small refraction instrument needs to be triggered by a closed signal, the small refraction instrument is connected to the output end of the first inverter circuit, and the closed signal output by the first inverter circuit triggers the small refraction instrument to start signal collection.

[0036] The input end of the second inverter circuit is connected to the output end of the first inverter circuit, when the small refraction instrument needs to be triggered by a pulse, the small refraction instrument is connected to the output end of the second inverter circuit, and the pulse signal output by the second inverter circuit triggers the small refraction instrument to start signal collection.

[0037] The detonation instruction control circuit is connected between the digital electronic detonator initiator and the digital electronic detonator decoding circuit, after receiving the detonation instruction transmitted by the digital electronic detonator initiator, the digital electronic detonator decoding circuit is controlled to carry out decoding. The digital electronic detonator decoding circuit is connected to the digital electronic detonator, completes decoding and detonates the digital electronic detonator, and the digital electronic detonator is triggered synchronously with the small refraction instrument.

[0038] The small refraction instrument and the digital electronic detonator synchronous control device are connected with the electronic detonator special initiator, and high-precision synchronization of the electronic detonator and the small refraction instrument is realized after setting the delay of initiation. Through indoor testing and field experiment, the high-precision exploration requirement is met. Through software development, delay parameter input, delay system design, different electronic detonator decoding time delay is adapted, the circuit of the synchronous control device is set, different trigger signals are output, and the trigger requirement of different small refraction instruments is met.

[0039] The decoding delay of the electronic detonator is tested before use, the delay parameter is input to the delay system, different signal interfaces are connected according to the trigger signal mode of the small refraction instrument, the decoding circuit decodes after the electronic detonator initiator sends an initiation instruction, the delay system works according to the delay parameter timing, the delay time is the decoding time, the instrument is triggered after the delay is completed, and the electronic detonator is initiated after the decoding is completed, so that the high-precision synchronization of acquisition and initiation is realized.

[0040] The application also relates to a small refraction instrument and a digital electronic detonator synchronous control method.

[0041] Step 1, the decoding delay time of the electronic detonator is tested, and the decoding delay time is input to the delay system; the process enters step 2;

[0042] Step 2, the initiation instruction is transmitted to the delay system and the initiation instruction control circuit by the digital electronic detonator initiator; the process simultaneously enters steps 3 and 5;

[0043] Step 3, the delay system delays according to the decoding delay time of the electronic detonator after receiving the initiation instruction transmitted by the digital electronic detonator initiator, and transmits the initiation instruction to the first inverter circuit after the delay time is reached; the process enters step 4;

[0044] Step 4, when the small refraction instrument needs to be triggered by a closed signal, the small refraction instrument is connected to the output end of the first inverter circuit, and the closed signal output by the first inverter circuit triggers the small refraction instrument to start signal acquisition;

[0045] When the small refraction instrument needs to be triggered by a pulse, the small refraction instrument is connected to the output end of the second inverter circuit, and the pulse signal output by the second inverter circuit triggers the small refraction instrument to start signal acquisition;

[0046] Step 5, the initiation instruction control circuit controls the decoding circuit of the digital electronic detonator to decode after receiving the initiation instruction transmitted by the digital electronic detonator initiator; the process enters step 6;

[0047] Step 6, the digital electronic detonator decoding circuit decodes and initiates the digital electronic detonator, and the initiation of the digital electronic detonator is synchronized with the collection of the small refraction instrument.

[0048] The following are several specific embodiments of the application

[0049] Embodiment 1

[0050] In a specific embodiment 1 of the application, as shown in Figure 1 , Figure 1 is a structural schematic diagram of a specific embodiment of the small refraction instrument and the digital electronic detonator synchronization control device of the application. The diagram includes a digital electronic detonator initiator (1), a delay system (2), a first inverter circuit (3), a second inverter circuit (4), a small refraction instrument (5), an initiation instruction control circuit (6), a digital electronic detonator decoding circuit (7), and a digital electronic detonator (8).

[0051] When the small refraction instrument is connected to the inverter circuit (3) output, the digital electronic detonator initiator (1) sends an initiation instruction, the (6) initiation instruction control decoding circuit (7) decodes, the delay system (2) receives the initiation instruction and delays according to the delay setting, and after the delay time ends, the inverter circuit (3) outputs a closed signal, the falling edge triggers the small refraction instrument (5) to collect, and at the same time, the decoding circuit (7) decodes and initiates the digital electronic detonator (8), so that the initiation of the digital electronic detonator is synchronized with the collection of the small refraction instrument.

[0052] When the small refraction instrument is connected to the inverter circuit (4) output, the digital electronic detonator initiator (1) sends an initiation instruction, the (6) initiation instruction control decoding circuit (7) decodes, the delay system (2) receives the initiation instruction and delays according to the delay setting, and after the delay time ends, the inverter circuit (4) outputs a pulse signal, the rising edge triggers the small refraction instrument (5) to collect, and at the same time, the decoding circuit (7) decodes and initiates the digital electronic detonator (8), so that the initiation of the digital electronic detonator is synchronized with the collection of the small refraction instrument.

[0053] Embodiment 2

[0054] In a specific embodiment 2 of the application, the digital electronic detonator initiator outputs a pulse signal as an initiation signal. In order to output a closed signal and a pulse signal, two high-speed inverters are designed to output different signals to meet the functional requirements. As shown in Figure 2 , Figure 2 is a circuit connection schematic diagram of the digital electronic detonator special initiator and the inverter.

[0055] Signal timing description:

[0056] 1, 5V / GND: Initiator output voltage, power supply for signal synchronization circuit;

[0057] 2. S_IN: output control signal of initiator, default low level;

[0058] 3. 5V negative edge: synchronization signal 1, default 5V high level;

[0059] 4. 5V positive edge: synchronization signal 2, default 5V low level;

[0060] 5. normally closed end: synchronization signal 3, default common end and its conduction;

[0061] 6. normally open end: synchronization signal 4, default common end and its disconnection;

[0062] The power terminal of the inverter 1 is connected to the 5V power supply of the digital electronic detonator initiator output, and the input terminal is connected to the control signal of the digital electronic detonator initiator output. One output of the inverter 1 is used as the trigger signal output of the 5V negative edge, and the other output is used as the control signal of the controllable switch. At the same time, the output terminal of the inverter 1 is connected to the input terminal of the inverter 2.

[0063] The power terminal of the inverter 2 circuit is connected to the 5V power supply of the digital electronic detonator initiator output, the input terminal is connected to the output terminal of the inverter 1, and the output terminal is used as the trigger signal output of the 5V positive edge.

[0064] The power terminal of the controllable switch is connected to the 5V power supply of the digital electronic detonator initiator output, and the input control terminal is connected to the output terminal of the inverter 1. When the input control terminal is high, the normally closed end of the controllable switch is turned on, and the common end is disconnected with the normally open end. When the input control terminal is low, the common end of the controllable switch is connected with the normally open end, and the common end is disconnected with the normally closed end.

[0065] When the delay time is up, S_IN outputs high level. At this time, the 5V positive edge signal jumps from 0V to 5V, generating a positive edge signal. The 5V negative edge signal jumps from 5V to 0V, generating a negative edge signal. At the same time, the negative edge signal controls the switching state of the controllable switch, disconnecting the common end with the normally closed end and connecting it with the normally open end. The signal duration is 10ms. After 10m delay, the signal returns to the initial state.

[0066] In the electronic detonator dedicated initiator, the required delay is set. After the electronic detonator dedicated initiator sends the digital electronic detonator initiation command, the delay system will delay according to the set time. When the set time is reached, the delay system will output a control signal, and the control signal synchronization circuit will output 5V positive jump edge, 5V negative jump edge, and 4 groups of close / open signals. According to the electrical interface requirements of the acquisition system, connect the required signals as synchronous acquisition trigger signals, so as to realize high synchronization of digital electronic detonator initiation and data acquisition.

[0067] Example 3

[0068] In a specific embodiment 3 of the application, the device is used for digital electronic detonator and small refraction instrument synchronization test, and through test analysis, the test can trigger different types of small refraction instruments, and the delay control is within 30 microseconds.

[0069] In the embodiment, small refraction instrument digital electronic detonator excitation test is carried out, the device is used for digital electronic detonator and small refraction instrument synchronization test, the small refraction instrument is connected with 12 single refraction arrangements, and the digital electronic detonator is excited in the form of digging. First, the common end and the normally open end of the controllable switch are connected with the trigger port of the small refraction instrument; second, the hand-held initiator is connected with the digital electronic detonator through the extension line; third, the signal delay of the exciter is set to 0 microsecond; fourth, the digital electronic detonator is excited, the start signal of the small refraction instrument and the explosion signal of the digital electronic detonator are captured by the digital oscilloscope at the same time, the delay time difference of the two is obtained, the delay time difference of the digital electronic detonator is counted, 10 digital electronic detonators are excited, the minimum delay time difference is 136 microseconds, and the maximum delay time difference is 178 microseconds; fifth, the signal delay of the exciter is set to 130 microseconds, 10 digital electronic detonators are excited again, and the start signal of the small refraction instrument and the explosion signal of the digital electronic detonator are captured by the digital oscilloscope, the minimum delay time is 10.4 microseconds, and the maximum delay time is 28.2 microseconds.

[0070] Through the modification of the signal delay setting, the delay time of the small refraction instrument and the digital electronic detonator is greatly reduced, and the design requirement is realized.

[0071] The application realizes high-precision triggering of small refraction instruments by the electronic detonator special initiator in geophysical exploration, realizes high-precision synchronization control excitation of the small refraction instrument and the digital electronic detonator, the synchronization precision meets the requirements of the seismic exploration technical specification, realizes the application of the digital electronic detonator in the seismic exploration industry, and has high application prospect.

[0072] Finally, it should be noted that: the above only describes the preferred embodiments of the application, and is not used to limit the application, although the application has been described in detail with reference to the foregoing embodiments, and for those skilled in the art, the technical solutions recorded in the foregoing embodiments can be modified, or some technical features can be replaced. Any modification, equivalent replacement, improvement, etc. within the spirit and principles of the application shall be included in the protection scope of the application.

[0073] In addition to the technical features described in the specification, they are known to those skilled in the art.

Claims

1. A small refractometer and digital electronic detonator synchronous control device, characterized in that, The small refractometer and digital electronic detonator synchronous control device comprises a delay system, a signal synchronization circuit, a detonation instruction control circuit and a digital electronic detonator decoding circuit.

2. The small refractometer and digital electronic detonator synchronization control device according to claim 1, characterized in that, The signal synchronization circuit comprises a first inverter circuit, and an input end of the first inverter circuit is connected to the delay system.

3. The device according to claim 2, characterized in that, The signal synchronization circuit further comprises a controllable switch, a power supply end of the first inverter circuit is connected to a 5V power supply output by a digital electronic detonator initiator, and an input end is connected to a control signal output by the digital electronic detonator initiator.

4. The device according to claim 3, characterized in that, The power supply end of the second inverter circuit is connected to the 5V power supply output by the digital electronic detonator initiator, the input end is connected to the output end of the first inverter, and the output end outputs a 5V positive edge trigger signal.

5. The device according to claim 4, characterized in that, The power supply end of the controllable switch is connected to the 5V power supply output by the digital electronic detonator initiator, and the input control end is connected to the output end of the first inverter.

6. The device according to claim 5, wherein, The preset delay time in the delay system is a decoding delay time of the electronic detonator tested in advance.

7. The device according to claim 1, characterized in that, The small refractometer and digital electronic detonator synchronous control method adopts the small refractometer and digital electronic detonator synchronous control device in claim 1, comprising:

8. A method for synchronizing a small refractometer and a digital electronic detonator, characterized in that, Step 1, the digital electronic detonator initiator transmits the detonation instruction to the delay system and the detonation instruction control circuit simultaneously. ​ Step 2, after receiving the detonation instruction transmitted by the digital electronic detonator initiator, the delay system delays according to the decoding delay time of the digital electronic detonator, and transmits the detonation instruction to the signal synchronization circuit after reaching the delay time, and the signal synchronization circuit triggers the small refraction instrument to start signal collection; Step 3, after receiving the detonation instruction transmitted by the digital electronic detonator initiator, the detonation instruction control circuit controls the digital electronic detonator decoding circuit to decode, and the digital electronic detonator decoding circuit completes the decoding of the digital electronic detonator to realize the synchronization of the digital electronic detonator excitation and the small refraction instrument collection.

9. The method according to claim 8, wherein the synchronization control method is characterized in that, The small refraction instrument and digital electronic detonator synchronization control method further comprises, before step 1, testing the decoding delay time of the electronic detonator, and inputting the decoding delay time to the delay system.

10. The method according to claim 8, wherein the synchronization control method of the small refractometer and the digital electronic detonator is characterized in that, In step 2, when the small refraction instrument needs to be triggered by a closed signal, the small refraction instrument is connected to the output end of the first inverter circuit, and the closed signal output by the first inverter circuit triggers the small refraction instrument to start signal collection.

11. The method according to claim 8, wherein the synchronization control method of the small refractometer and the digital electronic detonator is characterized in that, In step 2, when the small refraction instrument needs to be triggered by a pulse, the small refraction instrument is connected to the output end of the second inverter circuit, and the pulse signal output by the second inverter circuit triggers the small refraction instrument to start signal collection.

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