CN105571413A - Method and equipment for measuring delay time in millisecond magnitude of electronic detonator at high precision - Google Patents

Abstract

The invention discloses a method and equipment for measuring the second quantity of an electronic detonator with high precision. The device is composed of a power supply module, a control module, an electronic detonator interface module, a display module, an operation module and a detonation signal acquisition module; the power supply module and the control module are connected to other modules, and the other modules are not connected to each other; the method uses the electronic detonator Explosive power breaks the wire to obtain the detonation time. The method and equipment effectively avoid measurement errors caused by changes in the strength of sensor signals such as sound, light, and pressure in traditional detection methods, and the obtained detonation signal has a short duration, a large variation range, and is easy to judge and has high precision.

Description

A method and device for measuring the second quantity of an electronic detonator with high precision

technical field

The invention relates to the technical field of detonator measurement, in particular to a method and equipment for measuring the second quantity of an electronic detonator with high precision.

Background technique

Electronic detonator is a new type of detonator based on integrated circuit technology and design technology, which uses electronic chips to replace the time-delayed gunpowder in ordinary electric detonators to achieve precise timing and safe control. The delay time of the electronic detonator can be programmed in the order of milliseconds, and the precision of the delay time can be controlled in the order of milliseconds. Since the detonation of the electronic detonator needs special instructions to complete, the traditional delay time detection device cannot obtain the sending time of the detonation instruction, so the actual detonation time of the electronic detonator cannot be obtained; at the same time, the traditional equipment for measuring the detonation time cannot meet the requirements of the measurement method. Electronic detonator millisecond measurement accuracy requirements.

Contents of the invention

The technical problem to be solved by the present invention is to provide a method and equipment for measuring the second quantity of an electronic detonator with simple operation, reliable operation and high measurement accuracy.

The technical scheme adopted in the present invention is:

A high-precision device for measuring the second volume of an electronic detonator, including a power supply module 01, a control module 02, a detonator interface module 03, a display module 04, an operation module 05, an initiation signal acquisition module 06, and an initiation signal wire 07; the operation module 05 directs the control Module 02 sends control instructions; control module 02 outputs instruction data to display module 04 after processing the received control instructions, and outputs electronic detonator control instructions to detonator interface module 03; display module 04 displays different results after receiving the instruction data After the detonator interface module 03 receives the electronic detonator control command, it sends the control command to the electronic detonator through the external interface, and receives the return command of the electronic detonator, and inputs it to the control module 02; the external interface of the detonation signal acquisition module 06 is connected to the detonation signal wire 07, a part of the detonation signal wire 07 is fixed at the blasting position of the electronic detonator; after the detonation of the electronic detonator, the detonation signal acquisition module 06 sends a detonation completion signal to the control module 02.

A method for measuring the second quantity of an electronic detonator with high precision, the specific steps of the method are:

(1) Connect the electronic detonator to the external interface of the detonator interface module, and connect the two ends of the detonation signal wire to the two terminals of the external interface of the detonation signal acquisition module respectively. At this time, there is current in the detonation signal wire. One section is fixed on the electronic detonator to be detected;

(2) Input the preset extension time through the operation module;

(3) Press the detonation button in the operation module, the control module sends the detonation instruction to the electronic detonator through the detonator interface module, and the control module starts timing;

(4) After the preset delay time arrives, the electronic detonator explodes, and the detonation signal wire is blown off;

(5) After the detonation signal wire is disconnected, the current in the wire stops, and the control module stops timing;

Complete the electronic detonator second measurement.

Compared with the prior art, the present invention has the advantages of:

1. The present invention adopts the method of utilizing the explosion energy of the electronic detonator to blow off the wire to obtain the detonation moment of the detonator. Compared with the method of using sensors such as sound, light, and pressure, the measurement error caused by the change of the sensor signal strength is effectively avoided, and the resulting detonation The signal is a straight line, its duration is extremely short, the range of change is large, it is easy to judge, and the measurement accuracy is high, which can meet the high precision requirements of electronic detonator second measurement.

2. The design and structure of the equipment in the present invention are simple, the operation is clear, and the data acquisition rate is high. The detection can be completed in the traditional detonator experiment site, which effectively controls the learning cost and economic cost of the enterprise for the use of electronic detonator-related equipment.

Description of drawings

Fig. 1 is a schematic diagram of the overall structure of an electronic detonator seconds measurement device.

Figure 2 is a schematic diagram of the detonation signal acquisition module.

detailed description

In order to make the purpose and technical solution of the present invention clearer, the implementation of the present invention will be further described in detail below through specific examples and in conjunction with the accompanying drawings.

As shown in Figure 1, the power supply module 01 is connected to other modules respectively to provide corresponding working voltages for other modules;

The control module 02 is composed of an FPGA chip and its peripheral circuits; it is connected with other modules, and the power supply module 01 provides working voltage. Its built-in program can start timing after the detonation instruction is issued, and stop timing after receiving the detonation completion signal from the detonation signal acquisition module 06; the FPGA clock uses a 10MHz or higher frequency crystal oscillator, which can ensure its timing accuracy at 0.1 microseconds or higher;

The control module 02 internally stores a control program, is connected to the operation module 05, and performs corresponding processing after receiving input instructions or data. The operation module 05 includes 10 number buttons from 0 to 9 and a total of 14 buttons such as a delete button, a discharge button, an explosion button and a reset button. Among them, the number button is used to input the preset delay time; the delete button is used to delete the number entered by mistake; the discharge button is used to send a safe discharge command; after the detonation button is pressed, the device will first send an instruction to the electronic detonator to prepare for detonation, such as Charge command, set delay time command, read delay time command, voltage detection command, etc., return the electronic detonator to the command content for processing, send the detonation command and start timing when it is judged that it can be detonated; the reset button resets the program running on the device;

The display module 04 is composed of a liquid crystal display and its peripheral circuits, and is connected to the control module 02; the control module 02 outputs information such as preset delay time, actual delay time, error information, and operating status through the liquid crystal display of the display module 04 ;

The detonator interface module 03 is connected with the power supply module 01, which provides the required voltage for the work, and provides the required voltage for the electronic detonator; is connected with the control module 02, and converts the low-voltage finger signal sent by it into the required voltage for the electronic detonator to work. The high-voltage command signal is output to the electronic detonator, and the high-voltage command signal returned by the electronic detonator is converted into a low-voltage signal and input to the control module 02;

Described detonation signal acquisition module 06 has external interface 061, and two terminals of external interface 061 connect respectively the two ends of detonation signal lead 07 during work; One section of detonation signal lead 07 is fixed on the blasting position of detonator, and the power of detonator explosion can be Quickly blow off the detonation signal wire 07.

As shown in Figure 2, the detonation signal acquisition module 06 is made up of an external interface 061, a pull-down resistor 062, and an antistatic diode 063; the external interface 061 has two terminals, one of which is connected to the power module 01, and the other terminal is connected to the pull-down resistor 062, the control module 02 and the antistatic diode 063; the pull-down resistor 062 and the antistatic diode 063 are connected in parallel, and the other end is connected to the GND of the circuit; the resistance value of the pull-down resistor 062 is between 100Ω and 10KΩ, which can ensure the detonation signal acquisition module 06 to send The detonation completion signal to the control module 02 is almost a straight line. Controlling the resistance value of the pull-down resistor can make it take less than 0.05 microseconds for the signal generated when the electronic detonator is detonated to drop from high level to low level, and the signal curve is smooth without jitter. In the working state, when the electronic detonator is not detonated, there is current passing through the detonation signal wire 07, and the signal input to the control module 02 is at a high level; after the electronic detonator is detonated, the detonation signal wire 07 is blown off by the electronic detonator, and the current stops , the signal input to the control module 02 becomes low level rapidly. The control module 02 stops timing after receiving the low-level signal and processes the timing results accordingly.

The process flow of the method for measuring the second quantity of the electronic detonator with high precision is as follows:

(1) Connect the electronic detonator to the external interface of the detonator interface module, and connect the two ends of the detonation signal wire to the two terminals of the external interface of the detonation signal acquisition module respectively. At this time, there is current in the detonation signal wire. One section is fixed on the electronic detonator to be detected;

(2) Input the preset extension time through the operation module;

(3) Press the detonation button in the operation module, the control module sends the detonation instruction to the electronic detonator through the detonator interface module, and the control module starts timing;

(4) After the preset delay time arrives, the electronic detonator explodes, and the detonation signal wire is blown off;

(5) After the detonation signal wire is disconnected, the current in the wire stops, and the control module stops timing;

Complete the electronic detonator second measurement.

Claims (2)

1. A device for high-precision measurement of electronic detonator seconds, characterized in that it includes a power supply module (01), a control module (02), a detonator interface module (03), a display module (04), an operation module (05), The detonation signal acquisition module (06) and detonation signal wire (07); the operation module (05) sends control instructions to the control module (02); the control module (02) processes the received control instructions and sends them to the display module (04) Output instruction data, output electronic detonator control instruction to detonator interface module (03); Display module (04) shows different results after receiving instruction data; Detonator interface module (03) passes through external interface after receiving electronic detonator control instruction The electronic detonator sends a control command, and receives the return command of the electronic detonator, and inputs it to the control module (02); the external interface of the detonation signal acquisition module (06) is connected to the detonation signal wire (07), a part of the detonation signal wire (07) It is fixed at the blasting position of the electronic detonator; after the electronic detonator is detonated, the detonation signal acquisition module (06) sends a detonation completion signal to the control module (02). 2. A method for high-precision measurement of electronic detonator seconds, characterized in that: the specific steps of the method are: (1) Connect the electronic detonator to the external interface of the detonator interface module, and connect the two ends of the detonation signal wire to the two terminals of the external interface of the detonation signal acquisition module respectively. At this time, there is current in the detonation signal wire. One section is fixed on the electronic detonator to be detected; (2) Input the preset extension time through the operation module; (3) Press the detonation button in the operation module, the control module sends the detonation instruction to the electronic detonator through the detonator interface module, and the control module starts timing; (4) After the preset delay time arrives, the electronic detonator explodes, and the detonation signal wire is blown off; (5) After the detonation signal wire is disconnected, the current in the wire stops, and the control module stops timing; Complete the electronic detonator second measurement.