CN107132408A - Commercial electric detonator tube resistor safety instrumentation and method - Google Patents
Commercial electric detonator tube resistor safety instrumentation and method Download PDFInfo
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- CN107132408A CN107132408A CN201710506988.2A CN201710506988A CN107132408A CN 107132408 A CN107132408 A CN 107132408A CN 201710506988 A CN201710506988 A CN 201710506988A CN 107132408 A CN107132408 A CN 107132408A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R27/00—Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom
- G01R27/02—Measuring real or complex resistance, reactance, impedance, or other two-pole characteristics derived therefrom, e.g. time constant
- G01R27/14—Measuring resistance by measuring current or voltage obtained from a reference source
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/25—Arrangements for measuring currents or voltages or for indicating presence or sign thereof using digital measurement techniques
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/08—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess current
- H02H3/087—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess current for dc applications
Abstract
The present invention relates to a kind of commercial electric detonator tube resistor safety instrumentation and method, described device includes：MCU microcontrollers；MA grades of digital-control constant-flow sources, connect MCU microcontrollers and electric cap to be measured respectively, and the control signal for responding the MCU microcontrollers produces mA ranks test electric current and inputs the electric cap to be measured；Excessively stream security protection module, is connected with electric cap to be measured, for judging whether the test electric current by electric cap to be measured exceedes secure threshold；Detonator resistance measuring circuit, for gathering the voltage signal of electric cap to be measured, and is inputted in MCU microcontrollers, so as to obtain the resistance and test result of electric cap to be measured；Supplemental functionality, is connected with MCU microcontrollers, realizes parameter configuration, presentation of information, data storage and communication；Direct current of voltage regulation source module, is that whole test device is powered.Compared with prior art, the present invention has the advantages that low cost, reliability are high, it is simple and convenient to debug.
Description
Technical field
The invention belongs to resistance test field, more particularly, to a kind of portable height for commercial electric detonator resistance test
Precision safety instrumentation and method.
Background technology
Commercial electric detonator is widely used initiating equipment in engineering explosion, and the good and bad degree of its electrical property and detonation are reliable
Property it is closely related with safety in utilization, during electric detonator production and provide before use, having to check for the complete of finished product electric cap
Resistance, its test result not only influences the product quality of electric cap, and also influence is kept the safety in production and used.GB 8031-2015《Work
Industry electric cap》In explicitly point out electric cap maximum non firing current and electrostatic sensitivity be enforceable index, test when such as
Fruit is too big by the electric current of test product, it is possible to can cause an explosion accident, and if measurement electric current is too small, then can cause detonator
Resistance test result distortion, therefore must strictly control to measure the size and stability of electric current during the detection of electric cap impedance.
The measuring instrument that can be seen on existing market, such as CDLD-10 resistance of electric detonator tester, the digital thunder of SFX-3 types
Tube resistor sorter, KBD8 resistance of electric detonator sorter, ZFX-1 type Intelligent Mine tube resistor sorters etc., their measurement electric current
It is 10mA, and the circuitry design of current version is complicated, and production cost is high.Patent 201320509193.4《A kind of thunder
Tube resistor sorter》In measurement electric current be reduced to 2mA, but its constant-current source circuit and signal condition (small signals amplification) circuit are still
Similar with existing product, using Analog Circuit Design, discrete device is built, it is not easy to adjustment.Patent 201520829197.1《Ore deposit
Electricity consumption Cap resistance meter》The measurement of detonator resistance is realized using biproduct parting A/D converter ICL7107, circuit structure has
Simplify, but ICL7107 resolution ratio only has 3 1/2, limits its measurement accuracy, while its display uses LED numbers
Pipe, is only able to display numerical parameter.
The content of the invention
It is an object of the present invention to overcome the above-mentioned drawbacks of the prior art and provide a kind of commercial electric detonator electricity
Hinder safety instrumentation and method.
The purpose of the present invention can be achieved through the following technical solutions：
A kind of commercial electric detonator tube resistor safety instrumentation, including：
MCU microcontrollers；
MA grades of digital-control constant-flow sources, connect MCU microcontrollers and electric cap to be measured, for responding the MCU microcontrollers respectively
The control signal of device, produces mA ranks test electric current and inputs the electric cap to be measured；
Excessively stream security protection module, is connected with electric cap to be measured, for judging the test electricity by electric cap to be measured
Whether stream exceedes secure threshold；
Detonator resistance measuring circuit, is connected with electric cap to be measured, for gathering the voltage signal of electric cap to be measured, and inputs
In MCU microcontrollers, so as to obtain the resistance and test result of electric cap to be measured；
Supplemental functionality, is connected with MCU microcontrollers, realizes parameter configuration, presentation of information, data storage and communication；
Direct current of voltage regulation source module, is that whole test device is powered.
The mA grades of digital-control constant-flow source, which has, resets pin, and the clearing pin is connected with the excessively stream security protection module,
When it is described test electric current exceed secure threshold when, excessively stream security protection module to reset pin input high level signal, mA series
The output of control constant-current source is set to zero.
The excessively stream security protection module includes the DC current sensor and comparator being connected, and the direct current spreads
Sensor is connected with electric cap to be measured, and the comparator connects MCU microcontrollers and mA grades of digital-control constant-flow sources respectively；
DC current sensor gathers the test electric current by electric cap to be measured and is converted into voltage signal, and comparator compares
The voltage signal and electric current secure threshold voltage, MCU microcontrollers and mA grades of numerical control constant currents are transferred to by comparative result signal
Source.
The detonator resistance measuring circuit includes resistance-voltage conversion circuit, signal amplification circuit and the A/D being sequentially connected
Analog to digital conversion circuit, the resistance-voltage conversion circuit is connected with electric cap to be measured, and the A/D analog to digital conversion circuits and MCU are micro-
Controller is connected.
Signal amplification circuit and the A/D analog to digital conversion circuit is integrated in MCU microcontrollers, and MCU microcontrollers pass through
Internal bus is written and read control to the signal amplification circuit and A/D analog to digital conversion circuits.
A/D analog to digital conversion circuits include 16 analog-digital converters and reference voltage base chip.
Key-press input unit, the OLED that the supplemental functionality includes being connected with the MCU microcontrollers respectively are shown
Unit, storage interface unit and communications interface unit.
The storage interface unit is integrated in MCU microcontrollers, and MCU microcontrollers are by internal bus to memory interface
Unit is written and read operation.
The supplemental functionality also includes the buzzer alert unit being connected with the MCU microcontrollers.
The direct current of voltage regulation source module includes battery management circuit, rechargeable battery and the multichannel DC/DC being sequentially connected
Change-over circuit.
The MCU microcontrollers, mA grades of digital-control constant-flow sources, excessively stream security protection module, detonator resistance measuring circuit, auxiliary
Functional module and direct current of voltage regulation source module are installed on an internal circuit installing plate.
The device also includes an outside mechanical structure, is arranged at outside the internal circuit installing plate, the internal circuit peace
Dress plate is fixed in outside mechanical structure by fastener；
The outside mechanical structure includes the base end cap and panel end cap being connected, and the base end cap is included outside base
Shell, externally measured terminal interface, external power source mounting interface and PERCOM peripheral communication mounting interface, described panel end cap include panel
Shell, keyboard mounting interface, display mounting interface and power knob self-lock switch mounting interface, the outside mechanical structure it is each
Sealing ring is provided between part.
The outside mechanical structure is realized by configuration design to be optimized, and the configuration design includes three-dimensional dimension and quality is set
Meter.
A kind of method of testing based on described commercial electric detonator tube resistor safety instrumentation, comprises the following steps：
1) bootloader；
2) mode of operation select command is received, the mode of operation includes electric cap impedance resistance test pattern and system
Parameter configuration mode；
3) corresponding operating is performed according to the mode of operation select command；
Under the electric cap impedance resistance test pattern, mA grades of digital-control constant-flow sources of MCU microprocessor controls export mA grades
Other constant current is believed as test electric current, the collection of control detonator resistance measuring circuit with the voltage changed on resistance of electric detonator to be measured
Number, the result of conversion inputs data processing is carried out in MCU microcontrollers in a digital manner, obtains resistance of electric detonator resistance to be measured
Afterwards, judge whether in default resistance acceptability limit, show resistance test result；Excessively stream security protection module is described simultaneously
Test electric current produces interrupt signal and is sent to MCU microcontrollers and mA grades of digital-control constant-flow sources, pause test when exceeding secure threshold.
Compared with prior art, the present invention has advantages below：
1st, the present invention is used as test using accurate mA grades of digital-control constant-flow sources of the mA rank constant currents for being capable of output safety
Current generating apparatus, it is safe, possess standard GB/T 8031-2015《Commercial electric detonator》Regulation is surveyed to detonator impedance
The ability of examination, meets resistance measurement resolution ratio not less than 0.1 Ω, measurement electric current is not more than 30mA, safe current is 0.2A survey
Examination is required.Compared with the technology built using discrete transistor circuit or V/I circuits, accurate mA grades of digital-control constant-flow source has height
Precision, temperature coefficient are small, fully integrated, inexpensive, reliability is high, debug simply and easily advantage.
2nd, the present invention is provided with excessively stream security protection module, the size of the electric current of detection test in real time, more than secure threshold
When interrupt test, with protect test safety.
3rd, setting signal amplifying circuit of the present invention, increases dynamic range.
4th, signal amplification circuit and A/D analog-digital converter of the present invention is all integrated in MCU microcontrollers, by MCU micro-controls
Device processed is by internal bus Read-write Catrol, the routine with building signal amplification circuit and A/D analog-digital converters using discrete component
Method is compared, and circuit design is simpler, with better function, and adjustment is more convenient, and reliability is higher, and exports base using internal circuit
Quasi- voltage further increases measurement accuracy.
5th, direct current of voltage regulation source module of the present invention includes electric power management circuit, can access external electrical when battery electric quantity is not enough
Source is charged, and improves power supply reliability.The direct current of voltage regulation source module of the present invention has functional circuit Highgrade integration, electrical connection
Simply, the advantages of stability is good.
6th, supplemental functionality of the present invention includes OLED display unit, with volume is smaller, weight lighter, resolution ratio more
High, power consumption is lower, interface is simpler, can show the advantage of figure and multiline text, directly supports 3.3V to power, is more suitable for
The display module of portable instrument is used.
7th, storage interface unit of the present invention is integrated in MCU microcontrollers, with using external FLASH chip or external
The technical scheme of eeprom chip is compared, using internal FlexMemory as memory module, with speed is fast, circuit package in
Microcontroller, the advantage remarkable without outside extra addition EEPROM, cost savings, performance.
8th, present invention additionally comprises outside mechanical structure, internal circuit is effectively protected, identification function can be provided, while can be with
Pass through the optimization design to outside mechanical structure, it is ensured that the reasonability of design and the portability of product.
9th, MCU microcontrollers of the present invention are integrated with software systems, the safety test of commercial electric detonator tube resistor are realized, with money
The advantages of source occupancy is low, stability is good, the response time is fast and simple and convenient.
Brief description of the drawings
Fig. 1 is structural representation of the invention；
Fig. 2 is mA grades of numerical control constant-current source circuit schematic diagram of the present invention；
Fig. 3 is excessively stream security protection module schematic diagram of the present invention；
Fig. 4 is detonator resistance measuring circuit schematic diagram of the present invention；
Fig. 5 is constant voltage dc source module diagram of the present invention；
Fig. 6 is supplemental functionality schematic diagram of the present invention；
Fig. 7 is the schematic diagram of the outside mechanical structure of the present invention；
Fig. 8 is the side view of the outside mechanical structure of the present invention；
Fig. 9 is A-B sectional views in Fig. 7；
Figure 10 is C-D sectional views in Fig. 8；
Figure 11 is the main program flow chart of invention software system；
Figure 12 is the interruption flow chart of invention software system；
In figure, 1, circuit system, 2, software systems, 3, mechanical structure, 4, MCU microcontrollers, 5, mA grades of digital-control constant-flow sources,
6th, excessively stream security protection module, 7, detonator resistance measuring circuit, 8, supplemental functionality, 9, direct current of voltage regulation source module, 10, electricity
Resistance-voltage conversion circuit, 11, signal amplification circuit, 12, A/D analog to digital conversion circuits, 13, key-press input unit, 14, OLED shows
Show unit, 15, storage interface unit, 16, communications interface unit, 17, internal circuit installing plate, 18, fastener, 19, outside base
Shell, 20, externally measured terminal interface, 21, external power source mounting interface, 22, PERCOM peripheral communication mounting interface, 23, partly bury screwed hole,
24th, panel enclosure, 25, keyboard mounting interface, 26, display module mounting interface, 27, power knob self-lock switch mounting interface,
28th, device nameplate.
Embodiment
The present invention is described in detail with specific embodiment below in conjunction with the accompanying drawings.The present embodiment is with technical solution of the present invention
Premised on implemented, give detailed embodiment and specific operating process, but protection scope of the present invention is not limited to
Following embodiments.
Embodiment 1
As shown in figure 1, the present embodiment provides a kind of commercial electric detonator tube resistor safety instrumentation, including it is circuit system 1, soft
3 three parts of part system 2 and mechanical structure.Circuit system 1 is arranged on inside mechanical structure, and circuit system can be with security measurement work
Industry resistance of electric detonator and data storage.Mechanical structure can protect the circuit system of inside.Software systems are transported in circuit system
OK, circuit system normal work is controlled, the specific resistance of detonator resistance and testing result are shown by visualization interface, with
Afterwards by storage interface unit data storage, and it can require to upload according to host computer by serial communication circuit in circuit system.
In the present embodiment, circuit system 1 includes MCU microcontrollers 4, mA grades of digital-control constant-flow sources 5, excessively stream security protection modules
6th, detonator resistance measuring circuit 7, supplemental functionality 8 and direct current of voltage regulation source module 9.Wherein, MCU microcontrollers 4 are built-in
32 Kinetis low-power consumption microcontrollers of FlexMemory modules, start after test job, control mA grades of digital-control constant-flow sources 5
The mA ranks constant current of output safety is as test electric current, and the test electric current is by being tested detonator, by detonator resistance measurement electricity
Road 7 produces one and is proportional to the voltage of tested detonator resistance value, and is converted into data signal and is sent to MCU microcontrollers 4, carries out
Data processing, obtains the resistance and test result of electric cap to be measured, by supplemental functionality 8 by the specific resistance of detonator resistance and
Testing result shows and stored, and can also require to upload according to host computer.The series connection of excessively stream security protection module 6 is linked into mA grades of numerical controls
Between constant-current source 5 and detonator resistance measuring circuit 7, when the secure threshold allowed more than electric current, test loop and sounding are disconnected
Display reminding is alerted, to protect test safety.It is each needed for when direct current of voltage regulation source module 9 is circuit system offer normal work
Road DC voltage.
Embodiment 2
As shown in Fig. 2 in the present embodiment, mA grades of digital-control constant-flow sources 5 are Precision Current Component, integrated using programmable current source
Circuit chip IC1, chip model is AD5420, the mA rank constant currents of direct output safety, and there is signal output open circuit to protect
Protective function.The mA grades of digital-control constant-flow source 5 provides SPI interface, is docked with the SPI interface of MCU microcontrollers 4, by MCU micro-controls
The test electric current of numerical value is specified in the control of device 4 digital-control constant-flow source output processed, and representative value is 2mA.Accurate mA grades of digital-control constant-flow source simulation
Power supply+15V and digital power+3.3V is provided by direct current of voltage regulation source module 9, simulation ground and digitally single-point common ground connection.Its
It is the same as Example 1.
In the present embodiment, accurate mA grades of digital-control constant-flow source also provides CLEAR Protection Counter Functions pins, when this pin level is height
During level, constant-current source output is automatically set as minimum value of zero.Pin is reset to be connected with excessively stream security protection module 6.
Compared with the technology built using discrete transistor circuit or V/I circuits, the accurate mA grades of numerical controls of the present embodiment
Constant-current source has high accuracy, temperature coefficient is small, fully integrated, inexpensive, reliability is high, debug simply and easily advantage.
Embodiment 3
As shown in figure 3, the excessively stream security protection module of the present embodiment includes the DC current sensor IC2 and ratio being connected
The test size of current by electric cap Rx to be measured is sensed, voltage signal is converted to defeated compared with device IC3, DC current sensor IC2
Go out UG, then be compared with the electric current secure threshold for having been converted into magnitude of voltage, current sensor output voltage signal, which connects, to be compared
Device IC3 positive input terminal, secure threshold voltage connects comparator IC3 negative input end, and mA grades of numerical controls are sent into comparator IC3 output
The CLEAR Protection Counter Functions pins of constant-current source, while sending into the input interruptive port of MCU microcontrollers 4.Electric current secure threshold voltage
Set and completed by 12 DAC digital analog converters IC4, DAC digital analog converters IC4 output is used as electric current secure threshold voltage.Directly
Current sensor IC2 is flowed using the rich electronics WB I121G07 of dimension.Comparator IC3 uses common voltage comparator LM393, comparator
Output needs to add pull-up resistor, i.e., connect first resistor between comparator power supply DC+5V and comparator IC3 output pin
R1, span is typically between 5k Ω -50k Ω.DAC digital analog converters IC4 is integrated in inside MCU microcontrollers 4, by MCU
Microcontroller controls DAC to export the electric current secure threshold magnitude of voltage that the comparator needs by internal bus.Excessively stream is protected safely
Analog power DC+15V, the DC-15V and digital power DC+5V, DC+3.3V for protecting module are provided by direct current of voltage regulation source module 9,
Simulation ground and digitally single-point common ground connection.When current sensor output voltage signal is less than secure threshold, the electricity of comparator 18
Road is output as low level, and mA grades of digital-control constant-flow sources 5 are normally exported, and the input of MCU microcontrollers 4, which is interrupted, not to be triggered.Current sensor
When output voltage signal is more than secure threshold, the circuit output saltus step of comparator 18 is high level signal, and current source chip IC 1 is exported
Minimum value of zero is automatically set as, while being controlled in the input down trigger of MCU microcontrollers 4, processing routine of breaking in the microcontroller
Current source chip IC 1 processed closes electric current output, to protect test safety.The other the same as in Example 1.
Embodiment 4
Amplify as shown in figure 4, the detonator resistance measuring circuit 7 of the present embodiment includes resistance-voltage conversion circuit 10, signal
Circuit 11 and A/D analog to digital conversion circuits 12.The other the same as in Example 1.
The test electric current I that resistance-voltage conversion circuit 10 exports mA grades of digital-control constant-flow sources 5 by tested electric cap Rx,
A voltage U for being proportional to tested detonator resistance value is produced, this voltage signal filters out high frequency by analogue low pass filtering circuit and done
After disturbing, the differential input end PGA0_DP and PGA0_DM of signal amplification circuit 11 are sent into.Analogue low pass filtering circuit is by the second electricity
Hinder R2,3rd resistor R3, the first electric capacity C1, the second electric capacity C2 and the 3rd electric capacity C3 compositions, second resistance R2 and 3rd resistor R3
Value 1k Ω, the first electric capacity C1 values 100nF, the second electric capacity C2 and the 3rd C3 values 10nF.Signal amplification circuit 11 is by a narrow margin
Amplified before the analog input end DAD2 of value small-signal feed-in A/D analog to digital conversion circuits 12, so as to increase dynamic range.Letter
Number amplifying circuit 11 is mainly made up of programmable gain amplifier (PGA) IC5, is actually integrated in 32 Kinetis low-power consumption micro-
The inside of controller, when test electric current is set to 2mA, programmable gain amplifier IC5 uses 64 times of gain amplifiers in piece.A/
The voltage sent is carried out analog-to-digital conversion by D analog to digital conversion circuits 12, and the result of conversion is exported in a digital manner, and is sent to microcontroller
Data processing is carried out in device.A/D analog to digital conversion circuits 12 are main by 16 analog-digital converter (ADC16) IC6 and reference voltage base
Quasi- IC7 compositions, using 16 potential differences point input service pattern when analog-digital converter IC6 works, than 12 precision of A/D converter are more
Height, is actually integrated in the inside of 32 Kinetis low-power consumption microcontrollers, the stable benchmark electricity of reference voltage base IC7 outputs
Pressure VREF is supplied to analog-digital converter IC6, and actual circuit is not built using external chip, but directly by microcontroller
Circuit output 1.2V reference voltages, than directly further increasing measurement accuracy as voltage reference using supply voltage.This implementation
The detonator resistance measuring circuit of example is built unlike completion resistance measuring circuit mode from conventional using discrete component, and signal is put
Big circuit 11 and A/D analog-digital converters 12 are all integrated in 32 Kinetis low-power consumption microcontrollers, are passed through by microcontroller
Internal bus Read-write Catrol, compared with the conventional method of signal amplification circuit and A/D analog-digital converters is built using discrete component,
Circuit design of the present invention is simpler, with better function, and adjustment is more convenient, and reliability is higher.
Embodiment 5
As shown in figure 5, the direct current of voltage regulation source module 9 of the present embodiment include rechargeable battery BT, battery management circuit and
Multichannel DC/DC change-over circuits, have the advantages that functional circuit Highgrade integration, electrical connection be simple, stability is good.It is other same real
Apply example 1.
In the present embodiment, rechargeable battery BT selects capacity 2500mAh lithium-polymer rechargeable battery, as portable
The energy sources of formula test device.Battery management circuit by power input interface J1, linear lithium ion battery charging chip IC7,
Power switch SW1, the 4th electric capacity C4, the 5th electric capacity C5, the 4th resistance R4, the 5th resistance R5, the 6th resistance R6, the 7th resistance
R7, the first LED 1 and the second LED 2 are constituted.Power input interface JP1 1 pin connects input direct-current
The anode of power supply, with connecing the negative terminal of input DC power, the voltage range of external input power exists power input interface J1 2 pin
Between 4.5V~6V.4th electric capacity C4 is used for the filtering of input voltage.The linear model of lithium cell charging chip IC 7 is selected
CN3052A, IC7 4 pin and 8 pin are connected to the anode of input DC power, and IC7 3 pin and 1 pin are connected to input DC power
Negative terminal, IC7 2 pin the negative terminal of input DC power is connected to by the 6th resistance R6, for setting charging current
Size, IC7 7 pin are connected to the 5th resistance R5, and the second LED 2 and the 5th resistance R5 are used for battery management circuit
Charged state show that IC7 6 pin are connected to the 4th resistance R4, the first LED 1 and the 4th resistance R4 are used for electricity
The error condition of pond management circuit shows that IC7 5 pin are battery terminal connections pin BAT, and charging current and 4.2V are provided to battery
Modulation voltage, IC7 5 pin output through and the 7th resistance R7 and the 5th electric capacity C5 series arm be connected to the negative terminal of power supply
Ground, strobes to output, and the 7th resistance R7 uses 0.3 Ω valued resistors, and the 5th electric capacity C5 uses electrochemical capacitor.Work as input
During the voltage power down of power supply, IC7 enters low power mode of operation, and the current drain of battery is less than 3 microamperes.
Rechargeable battery BT anode is connected to IC7 5 pin output, and rechargeable battery BT negative terminal is connected to input direct-current
The negative terminal of power supply.Rechargeable battery BT anode is connected to the multichannel DC/DC change-over circuits of rear class by self-lock switch SW1.
Battery management circuit access external power source can be charged when battery electric quantity is not enough, and normal work needs can be met in battery electric quantity
When, self-lock switch SW1, which is pressed, to be connected and keeps battery to export, and battery output is disconnected when self-lock switch SW1 upsprings.
Multichannel DC/DC change-over circuits are required each when rechargeable battery BT output voltage is converted into circuit system work
Road DC voltage, including analog power DC+15V, DC-15V and digital power DC+5V, DC+3.3V.Multichannel DC/DC change-over circuits
Mainly by efficient booster IC8, low voltage difference (LDO) voltage-stablizer IC9 and isolation two-way voltage module power supply IC10.Efficient booster
IC8 selects TPS81256, and IC8 C1 and C2 pins are connected with the output pin of self-lock switch.6th electric capacity C6 anode with
IC8 C1 with C2 pins are connected, and the 6th electric capacity C6 negative terminal is connected with power supply, play input filter, the 6th electric capacity
C6 uses electrochemical capacitor.IC8 B2 pins are connected by the 8th resistance R8 with IC8 C1 and C2 pins, as self-lock switch SW1
When pressing conducting, IC8 C1 and C2 pins are connected with rechargeable battery BT anode, and B2 pins level is pulled up by the 8th resistance R8
To battery BT voltage VBat, enable IC8 and start working.IC8 A1, A2 and B1 pin is with being connected to power supply.IC8 A3, B3
It is power supply output pin with C3 pins, exports DC+5V voltages, operating current can reaches more than 550mA.7th electric capacity C7 anode
It is connected with IC8 A3, B3 and C3 output pin, the 7th electric capacity C7 negative terminal is connected with power supply, plays output filter action,
7th electric capacity C7 uses electrochemical capacitor.IC8 output pin is connected after 3rd LED 3 and the 9th resistance R9 series connection
With power supply, the display for IC8 output voltages is indicated.Low voltage difference (LDO) voltage-stablizer IC9 selects SPX1117-3.3, by DC+
5V voltage conversion is DC+3.3V.IC9 3 pin connect IC8 output pin, input DC+5V voltages, and IC9 1 pin connects direct current
Source, it is connected with digital power, IC9 3 pin output DC+3.3V, maximum operating currenbt is up to 800mA.8th electric capacity C8
Anode be connected with IC9 3 pin, the 8th electric capacity C8 negative terminal is connected with power supply, serve input High frequency filter.9th
Electric capacity C9 anode is connected with IC9 3 pin, and the 9th electric capacity C9 negative terminal is connected with power supply, plays input low frequency filtering and makees
With.Tenth electric capacity C10 anode is connected with IC9 2 pin, and the tenth electric capacity C10 negative terminal is connected with power supply, plays output filter
Ripple is acted on.Isolation two-way voltage module power supply IC10 selects A0515S-2WR2, for obtaining analog power DC+15V and DC-
15V.With connecing dc source, IC10 2 pin are connected IC10 1 pin by inductance L1 with IC8 output pin.11st electric capacity
C11 anode is connected with IC8 output pin, and the 11st electric capacity C11 negative terminal is connected with power supply.12nd electric capacity
C12 anode is connected with IC10 2 pin, and the 12nd electric capacity C12 negative terminal is connected with power supply.First inductance L1, the tenth
One electric capacity C11 and the 12nd electric capacity C12 constitutes the π type LC composite filters of C-L-C structures, the filtering for input power.
IC10 4 pin with connecing insulation output power supply, are connected with analog power, and IC10 7 pin output DC+15V, IC10 5 pin are defeated
Go out DC-15V.13rd electric capacity C13 anode is connected with IC10 7 pin, the 13rd electric capacity C13 negative terminal and IC10 4 pin
It is connected.14th electric capacity C14 anode is connected with IC10 4 pin, the 14th electric capacity C14 negative terminal and IC10 5 pin phases
Connection.13rd electric capacity C13 and the 14th electric capacity C14, which is used to export, to be filtered.
Embodiment 6
As shown in fig. 6, the supplemental functionality 8 of the present embodiment includes key-press input unit 13, OLED display unit 14, honeybee
Ring device Alarm Unit, storage interface unit 15 and communications interface unit 16.The other the same as in Example 1.
Key-press input unit 13 includes key-press input interface JP2, is the input interface of 4x5 matrix keyboards, JP2 1~9 pipe
PB0~PB8 pins of pin and microcontroller connect one to one.
OLED display unit 14 includes display interface JP3, from resolution ratio 128,x64 0.96 inch OLED module, the 1 of JP3
With connecing digital power, 3 pin that JP3 2 pin meet digital power DC+3.3V, JP3 are connected pin with the PB21 pin with microcontroller, JP3
4 pin be connected with the PB22 pin with microcontroller, JP3 5 pin are connected with the PB18 pin with microcontroller, JP3 6 pin with it is micro-
The PB19 pin connection of controller, JP3 7 pin are connected with the PB20 pin with microcontroller.With the technical scheme of LED numeral methods
Compare, OLED display unit has that volume is smaller, weight is lighter, resolution ratio is higher, power consumption is lower, interface is simpler, can show
The advantage of figure and multiline text, directly supports 3.3V to power, the display module for being more suitable for portable instrument is used.
Buzzer alert unit is by the tenth resistance R10, the 11st resistance R11, diode D1, NPN triode Q1 and buzzing
Device BEEL1 is constituted, and drive signal is provided by the PB9 of microcontroller, and the tenth resistance R10 and the 11st resistance R11 play current limliting partial pressure
Effect, NPN triode Q1 electrification stream amplification, triode Q1 base stage is by the tenth resistance R10 and the PB9 pin of microcontroller
Connection, triode Q1 base stage is connected by the 11st resistance R11 with digital power, triode Q1 emitter stage and numeral electricity
Connect to source.The negative pole that buzzer BELL1 positive pole meets digital power DC+3.3V, BELL1 connects the colelctor electrode of NPN triode Q1.
Diode D1 positive pole connects buzzer BELL1 negative pole, and diode D1 negative pole connects buzzer BELL1 positive pole, plays protection honeybee
The effect of ring device.When the PB9 pin of microcontroller export high level, triode Q1 conductings are with enough electric current driving buzzer hairs
Sound, when the PB9 pin of microcontroller export low level, triode Q1 ends buzzer not sounding.
Storage interface unit 15 using Kinetis Series of MCU inside FlexMemory memory modules, using micro-
The internal bus of processor is written and read operation, and FlexMemory is by FlexNVM, FlexRAM and built-in firmware firmware
Composition, can combine and emulate into EEPROM, support the operations such as the read-write wiping of byte.With using external FLASH chip or
The technical scheme of external eeprom chip is compared, using internal FlexMemory as memory module, with speed is fast, circuit envelope
Advantage loaded on microcontroller, remarkable without outside extra addition EEPROM, cost savings, performance.
Communications interface unit 16 includes TTL-RS232 driver chips IC12, the 15th electric capacity C15, the 16th electric capacity
C16, the 17th electric capacity C17, the 18th electric capacity C18, the 19th electric capacity C19 and communication interface JP4.TTL-RS232 driver cores
Piece IC12 uses MAX3232, with low voltage difference transmitter output stage function, is powered using dual charge pump in 3.0V to 5.5V power supplys
When can realize real RS-232 performances.In communications interface unit, RS232 driver ICs 12 use digital power DC+3.3V
Power supply, this four external capacitives of the 15th electric capacity C15, the 16th electric capacity C16, the 17th electric capacity C17, the 18th electric capacity C18 are made
For charge pump capacitor, capacitance is 0.1uF, and the decoupling that the 19th electric capacity C19 is used for digital power is filtered, and capacitance is 0.1uF.Communication
Interface JP4 selection standard DB9 joints, for being connected with outer computer RS232 communication interfaces.Communication interface JP4 5 pin connect number
Word power supply, communication interface JP4 2 pin connect 14 pin of RS232 driver ICs 12, and communication interface JP4 3 pin connect RS232 drivings
Device IC12 13 pin.
Embodiment 7
In the present embodiment, mechanical structure 3 is included on an internal circuit installing plate 17, MCU microcontrollers, mA grades of numerical control constant currents
It is interior that source, excessively stream security protection module, detonator resistance measuring circuit, supplemental functionality and direct current of voltage regulation source module are installed on this
On portion's circuit installing plate 17.Remaining be the same as Example 1.
Embodiment 8
As is seen in figs 7-10, in the present embodiment, mechanical structure 3 also includes an outside mechanical structure, internal circuit installing plate
17 are fixed in outside mechanical structure by fastener 18, and fastener 18 is included inside screw and stud, and outside mechanical structure
The screwed hole 23 that partly buries coordinate.The outside mechanical structure can protect internal structure and provide electric interfaces.Remaining be the same as Example
7。
Outside mechanical structure includes the base end cap and panel end cap being connected.Base end cap includes base shell 19, outer
Portion's measurement terminal interface 20, external power source mounting interface 21 and PERCOM peripheral communication mounting interface 22, panel end cap include panel enclosure
24th, keyboard mounting interface 25, display module mounting interface 26, power knob self-lock switch mounting interface 27 and device nameplate 28.
External structure can protect inside circuit system, identity device function information, meanwhile, external structure carry out structure optimization set
Meter, it is ensured that the reasonability of design and the portability of product.Optimal Structure Designing includes configuration design and waterproofing design.Configuration design
Three-dimensional dimension and Quality Design including external structure, can control the test device in the reasonable scope, improve its portable
Property.Waterproofing design includes externally measured terminal interface 20, external power source mounting interface 21, PERCOM peripheral communication mounting interface 22 and power supply
Self-lock of button switch mounting interface 27 uses sealing ring, and display module mounting interface 26 is using between transparent organic glass and shell
Seal, to be sealed between keyboard mounting interface 25 and shell, to be sealed between base shell 19 and panel enclosure 24, waterproof is set
Meter can protect internal circuit.
Embodiment 9
The software systems 2 installed and run in circuit system 1 include system initialization routine, electric cap impedance resistance
Test program, systematic parameter configuration program and excessively stream safeguard protection interrupt handling routine.
As shown in figure 11, the method for testing based on above-mentioned commercial electric detonator tube resistor safety instrumentation, comprises the following steps：
1) bootloader.Runtime initialization program, initialization failure then terminates operation, initialize successfully then by with
The function that family selection enters in electric cap impedance resistance test program or systematic parameter configuration program, control circuit system 1
Module normal work, completes to return after test function, waits user's operation.System initialization routine includes the initial of microcontroller
Change configuration, the initial configuration of peripheral hardware, the initial configuration of functional circuit.System initialization routine is opened after power for system
Initialization before beginning work, each output signal zero after system initialization routine operation in circuit system.
2) mode of operation select command is received, the mode of operation includes electric cap impedance resistance test pattern and system
Parameter configuration mode.
3) corresponding operating is performed according to the mode of operation select command.
Electric cap impedance resistance test program, electric cap impedance are run under electric cap impedance resistance test pattern
Resistance test program is specially：Control the mA rank constant currents of the output safety of digital-control constant-flow source 5, control detonator resistance measurement electricity
The normal acquisition of road 7 is with changing the voltage signal on resistance of electric detonator to be measured, and it is micro- that the result of conversion is sent to Kinetis in a digital manner
Data processing is carried out in controller, obtains after resistance of electric detonator resistance to be measured, judges whether in default resistance acceptability limit,
Detonator resistance test result is shown by display module, test result is uploaded by serial communication interface.
The runtime parameter configuration program under systematic parameter configuration pattern, including default safety test current values
Setting, the setting of default resistance acceptability limit index, the setting of default overcurrent safeguard protection threshold value.Systematic parameter is matched somebody with somebody
Program is put, after change parameter setting numerical value, is automatically stored in memory module, during power-up operation next time, software systems are called
Parameter operation after storage.
Obtain after resistance of electric detonator resistance to be measured, judge whether in default resistance acceptability limit, show resistance test
As a result；Excessively stream security protection module produces interrupt signal when the test electric current exceedes secure threshold to be sent to MCU micro- simultaneously
Controller and mA grades of digital-control constant-flow sources, run excessively stream safeguard protection interrupt handling routine, pause test.Excessively stream safeguard protection is interrupted
Processing routine includes exiting for the response, the processing of interruption and interruption interrupted.Excessively stream security protection module exceedes in test electric current
During threshold value, a low level can be provided and be connected to the saltus step electric signal of high level on the external interrupt pin of microcontroller, by
Excessively stream safeguard protection interrupt handling routine responds this interrupt signal, suspends the operation of test program, sentences in interrupt handling routine
It is disconnected whether excessively stream, the output of constant-current source is closed if excessively stream to protect test safety, while controlling buzzer BELL1 sound production prompts
User, recovers test program operation when exiting interrupt handling routine.
Preferred embodiment of the invention described in detail above.It should be appreciated that one of ordinary skill in the art without
Need creative work just can make many modifications and variations according to the design of the present invention.Therefore, all technologies in the art
Personnel are available by logical analysis, reasoning, or a limited experiment on the basis of existing technology under this invention's idea
Technical scheme, all should be in the protection domain being defined in the patent claims.
Claims (10)
1. a kind of commercial electric detonator tube resistor safety instrumentation, it is characterised in that including：
MCU microcontrollers (4)；
MA grades of digital-control constant-flow sources (5), connect MCU microcontrollers (4) and electric cap to be measured, for responding the MCU micro-controls respectively
The control signal of device (4) processed, produces mA ranks test electric current and inputs the electric cap to be measured；
Excessively stream security protection module (6), is connected with electric cap to be measured, for judging the test electric current by electric cap to be measured
Whether secure threshold is exceeded；
Detonator resistance measuring circuit (7), is connected with electric cap to be measured, for gathering the voltage signal of electric cap to be measured, and inputs
In MCU microcontrollers (4), so as to obtain the resistance and test result of electric cap to be measured；
Supplemental functionality (8), is connected with MCU microcontrollers (4), realizes parameter configuration, presentation of information, data storage and leads to
Letter；
Direct current of voltage regulation source module (9), is that whole test device is powered.
2. commercial electric detonator tube resistor safety instrumentation according to claim 1, it is characterised in that the mA grades of numerical control is permanent
Stream source (5), which has, resets pin, and the clearing pin is connected with the excessively stream security protection module (6), when the test electric current surpasses
When crossing secure threshold, excessively stream security protection module (6) to resetting pin input high level signal, mA grades of digital-control constant-flow sources (5)
Output is set to zero.
3. commercial electric detonator tube resistor safety instrumentation according to claim 1, it is characterised in that the excessively stream is protected safely
Shield module (6) includes the DC current sensor and comparator being connected, the DC current sensor and electric cap string to be measured
Connection, the comparator connects MCU microcontrollers (4) and mA grades of digital-control constant-flow sources (5) respectively；
DC current sensor gathers the test electric current by electric cap to be measured and is converted into voltage signal, and comparator is more described
Voltage signal and electric current secure threshold voltage, MCU microcontrollers (4) and mA grades of digital-control constant-flow sources are transferred to by comparative result signal
(5)。
4. commercial electric detonator tube resistor safety instrumentation according to claim 1, it is characterised in that the detonator resistance is surveyed
Amount circuit (7) includes resistance-voltage conversion circuit (10), signal amplification circuit (11) and A/D the analog-to-digital conversions electricity being sequentially connected
Road (12), the resistance-voltage conversion circuit (10) is connected with electric cap to be measured, the A/D analog to digital conversion circuits (12) and MCU
Microcontroller (4) is connected.
5. commercial electric detonator tube resistor safety instrumentation according to claim 4, it is characterised in that the signal amplification electricity
Road (11) and A/D analog to digital conversion circuits (12) are integrated in MCU microcontrollers (4), and MCU microcontrollers (4) pass through internal bus
Control is written and read to the signal amplification circuit (11) and A/D analog to digital conversion circuits (12).
6. commercial electric detonator tube resistor safety instrumentation according to claim 1, it is characterised in that the miscellaneous function mould
Block (8) includes the key-press input unit (13) being connected respectively with the MCU microcontrollers (4), OLED display unit (14), storage
Interface unit (15) and communications interface unit (16).
7. commercial electric detonator tube resistor safety instrumentation according to claim 1, it is characterised in that the direct current of voltage regulation
Source module (9) includes battery management circuit, rechargeable battery and the multichannel DC/DC change-over circuits being sequentially connected.
8. commercial electric detonator tube resistor safety instrumentation according to claim 1, it is characterised in that the MCU microcontrollers
Device (4), mA grades of digital-control constant-flow sources (5), excessively stream security protection module (6), detonator resistance measuring circuit (7), supplemental functionalities
(8) it is installed on direct current of voltage regulation source module (9) on an internal circuit installing plate (17).
9. commercial electric detonator tube resistor safety instrumentation according to claim 8, it is characterised in that the device also includes one
Outside mechanical structure, is arranged at the internal circuit installing plate (17) outside；
The outside mechanical structure includes the base end cap and panel end cap being connected, and the base end cap includes base shell
(19), externally measured terminal interface (20), external power source mounting interface (21) and PERCOM peripheral communication mounting interface (22), described face
Plate end cap includes panel enclosure (24), keyboard mounting interface (25), display mounting interface (26) and power knob self-lock switch peace
Sealing ring is provided between attaching mouthful (27), each part of the outside mechanical structure.
10. a kind of method of testing based on commercial electric detonator tube resistor safety instrumentation as claimed in claim 1, its feature exists
In comprising the following steps：
1) bootloader；
2) mode of operation select command is received, the mode of operation includes electric cap impedance resistance test pattern and systematic parameter
Configuration mode；
3) corresponding operating is performed according to the mode of operation select command；
Under the electric cap impedance resistance test pattern, MCU microcontrollers (4) control mA grades of digital-control constant-flow source (5) output mA
Rank constant current is as test electric current, and control detonator resistance measuring circuit (7) collection is with changing on resistance of electric detonator to be measured
Voltage signal, the result of conversion is inputted in a digital manner carries out data processing in MCU microcontrollers (4), obtain electric cap to be measured
After resistance, judge whether in default resistance acceptability limit, show resistance test result；While excessively stream safeguard protection mould
Block (6) produces interrupt signal when the test electric current exceedes secure threshold and is sent to MCU microcontrollers (4) and mA grades of numerical controls perseverances
Stream source (5), pause test.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710506988.2A CN107132408A (en) | 2017-06-28 | 2017-06-28 | Commercial electric detonator tube resistor safety instrumentation and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710506988.2A CN107132408A (en) | 2017-06-28 | 2017-06-28 | Commercial electric detonator tube resistor safety instrumentation and method |
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| Publication Number | Publication Date |
|---|---|
| CN107132408A true CN107132408A (en) | 2017-09-05 |
Family
ID=59736535
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710506988.2A Pending CN107132408A (en) | 2017-06-28 | 2017-06-28 | Commercial electric detonator tube resistor safety instrumentation and method |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108872652A (en) * | 2018-04-28 | 2018-11-23 | 中国工程物理研究院电子工程研究所 | A kind of detonator resistance testing device with overcurrent protection |
| CN109341447A (en) * | 2018-12-14 | 2019-02-15 | 中国工程物理研究院电子工程研究所 | Detonation interface arrangement and the method for ignition |
| CN109343516A (en) * | 2018-12-11 | 2019-02-15 | 广西玉柴机器股份有限公司 | A method of measurement assessment engine controller AD conversion precision |
| CN111239494A (en) * | 2020-02-03 | 2020-06-05 | 杭州晋旗电子科技有限公司 | Method and system for measuring resistance value of communication bus of electronic detonator on line |
| CN112161525A (en) * | 2020-09-12 | 2021-01-01 | 美唐科技(江苏)有限公司 | Data analysis method for receiving circuit of electronic detonator initiator |
| CN112994144A (en) * | 2021-02-05 | 2021-06-18 | 江苏省如高高压电器有限公司 | Power supply circuit design method for auxiliary switch node resistance test system |
| CN113791281A (en) * | 2021-08-24 | 2021-12-14 | 西安航天动力试验技术研究所 | Full resistance detection system of multichannel electric detonator control circuit |
| CN114963902A (en) * | 2022-05-05 | 2022-08-30 | 上海芯飏科技有限公司 | Detection circuit, method and device for ignition resistance of electronic detonator |
| CN114993121A (en) * | 2022-04-28 | 2022-09-02 | 上海芯飏科技有限公司 | System and method for measuring ignition resistance of electronic detonator |
| CN115077313A (en) * | 2022-06-08 | 2022-09-20 | 上海芯飏科技有限公司 | System and method for high-precision measurement of bus resistance of electronic detonator |
| CN116027214A (en) * | 2023-03-30 | 2023-04-28 | 湖北蓝博新能源设备股份有限公司 | Battery detection equipment and system |
| CN114963901B (en) * | 2022-04-28 | 2023-11-28 | 上海芯飏科技有限公司 | System and method for measuring ignition resistance of electronic detonator |
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Cited By (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108872652A (en) * | 2018-04-28 | 2018-11-23 | 中国工程物理研究院电子工程研究所 | A kind of detonator resistance testing device with overcurrent protection |
| CN109343516A (en) * | 2018-12-11 | 2019-02-15 | 广西玉柴机器股份有限公司 | A method of measurement assessment engine controller AD conversion precision |
| CN109341447A (en) * | 2018-12-14 | 2019-02-15 | 中国工程物理研究院电子工程研究所 | Detonation interface arrangement and the method for ignition |
| CN109341447B (en) * | 2018-12-14 | 2021-01-01 | 中国工程物理研究院电子工程研究所 | Detonation interface device and detonation method |
| CN111239494A (en) * | 2020-02-03 | 2020-06-05 | 杭州晋旗电子科技有限公司 | Method and system for measuring resistance value of communication bus of electronic detonator on line |
| CN111239494B (en) * | 2020-02-03 | 2022-08-12 | 杭州晋旗电子科技有限公司 | Method and system for measuring resistance value of communication bus of electronic detonator on line |
| CN112161525B (en) * | 2020-09-12 | 2022-10-11 | 美唐科技(江苏)有限公司 | Data analysis method for receiving circuit of electronic detonator initiator |
| CN112161525A (en) * | 2020-09-12 | 2021-01-01 | 美唐科技(江苏)有限公司 | Data analysis method for receiving circuit of electronic detonator initiator |
| CN112994144A (en) * | 2021-02-05 | 2021-06-18 | 江苏省如高高压电器有限公司 | Power supply circuit design method for auxiliary switch node resistance test system |
| CN112994144B (en) * | 2021-02-05 | 2024-03-26 | 江苏省如高高压电器有限公司 | Power supply circuit design method for auxiliary switch node resistance test system |
| CN113791281A (en) * | 2021-08-24 | 2021-12-14 | 西安航天动力试验技术研究所 | Full resistance detection system of multichannel electric detonator control circuit |
| CN113791281B (en) * | 2021-08-24 | 2023-11-24 | 西安航天动力试验技术研究所 | Multichannel electric detonator control loop total resistance detection system |
| CN114993121A (en) * | 2022-04-28 | 2022-09-02 | 上海芯飏科技有限公司 | System and method for measuring ignition resistance of electronic detonator |
| CN114993121B (en) * | 2022-04-28 | 2023-08-15 | 上海芯飏科技有限公司 | System and method for measuring ignition resistance of electronic detonator |
| CN114963901B (en) * | 2022-04-28 | 2023-11-28 | 上海芯飏科技有限公司 | System and method for measuring ignition resistance of electronic detonator |
| CN114963902B (en) * | 2022-05-05 | 2024-02-23 | 上海芯飏科技有限公司 | Detection circuit, method and device for ignition resistance of electronic detonator |
| CN114963902A (en) * | 2022-05-05 | 2022-08-30 | 上海芯飏科技有限公司 | Detection circuit, method and device for ignition resistance of electronic detonator |
| CN115077313B (en) * | 2022-06-08 | 2023-08-29 | 上海芯飏科技有限公司 | System and method for high-precision measurement of bus resistance of electronic detonator |
| CN115077313A (en) * | 2022-06-08 | 2022-09-20 | 上海芯飏科技有限公司 | System and method for high-precision measurement of bus resistance of electronic detonator |
| CN116027214A (en) * | 2023-03-30 | 2023-04-28 | 湖北蓝博新能源设备股份有限公司 | Battery detection equipment and system |
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