CN106556743B - A kind of priming system resistance value measuring circuit of automatic calibration multichannel priming system circuit - Google Patents
A kind of priming system resistance value measuring circuit of automatic calibration multichannel priming system circuit Download PDFInfo
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- CN106556743B CN106556743B CN201610958883.6A CN201610958883A CN106556743B CN 106556743 B CN106556743 B CN 106556743B CN 201610958883 A CN201610958883 A CN 201610958883A CN 106556743 B CN106556743 B CN 106556743B
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- resistance
- priming system
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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
Abstract
A kind of priming system resistance value measuring circuit of automatic calibration multichannel priming system circuit, multichannel priming system circuit include a plurality of priming system work branch in parallel, and every priming system work branch is equipped with priming system resistance and priming system operating switch；Priming system resistance value measuring circuit includes constant-current source, digital signal processor, calibration circuit, resistance measuring circuit and resistance measurement parallel circuit etc.；Constant-current source is used to provide electric current for priming system resistance value measurement, and calibration circuit is used to determine the error of resistance measuring circuit, and resistance measuring circuit and resistance measurement parallel circuit are used to determine the measurement of the priming system resistance in every priming system work branch；Digital signal processor is used to record and determine the true value of tested explosive resistance；Priming system resistance value measuring circuit of the invention can realize that multichannel priming system resistance value successively independently measures, precision and highly-safe.
Description
Technical field
The present invention relates to a kind of priming system resistance value measuring circuit, especially a kind of fire of automatic calibration multichannel priming system circuit
Work product resistance value measuring circuit.
Background technique
Priming system resistance value measurement at present generallys use manual measurement method, in a small number of automatic measurement schemes, there is measurement electricity
Flow through big or measuring circuit and work normally the not independent problem of circuit, cause the process for measuring priming system resistance cumbersome and
There are safety risks.
Summary of the invention
Technology of the invention solves the problems, such as: to overcome above-mentioned the deficiencies in the prior art, providing a kind of automatic calibration multichannel
The priming system resistance value measuring circuit of priming system circuit.
The technical solution of the invention is as follows:
A kind of priming system resistance value measuring circuit of automatic calibration multichannel priming system circuit, the multichannel priming system circuit include
A plurality of priming system work branch in parallel, every priming system work branch are equipped with priming system resistance and priming system operating switch；
The priming system resistance value measuring circuit includes constant-current source D1, amplifier D2, digital signal processor D3, the first calibration circuit, the
Two calibration circuits, resistance measurement anode line, resistance measurement cathode line and resistance measurement parallel circuit；The resistance measurement anode line
One end is connect with the anode of the amplifier D2, and the other end is connect with the constant-current source D1, resistance measurement cathode line one end
It is connect with the cathode of the amplifier D2, the other end is connect with the multichannel priming system circuit on one side, in the resistance measurement sun
The first calibration circuit and the second calibration circuit have been arranged in parallel between polar curve and resistance measurement cathode line；The first calibration circuit
Be equipped with the first calibrating resistance R2 and the first calibration switch K10, the second calibration circuit be equipped with the second calibrating resistance R3 and
Second calibration switch K9；In the resistance measurement cathode line, the tie point and priming system of circuit and resistance measurement cathode line are calibrated
Measurement switch K11 is equipped between operating circuit and the tie point of resistance measurement cathode line；The amplifier D2 and the number are believed
Number processor D3 connection；The resistance measurement parallel circuit includes corresponding more with a plurality of priming system work branch of the parallel connection
The resistance measurement branch of item parallel connection, every resistance measurement branch are equipped with branch measurement switch, the resistance measurement parallel circuit
One end is connect with the tie point of the resistance measurement anode line and constant-current source D1, every resistance measurement branch other end with it is corresponding
Priming system work branch connection, so that priming system resistance is in resistance measurement branch and priming system work branch tie point and resistance
It measures between cathode line and multichannel priming system operating circuit tie point；The priming system resistance value measuring circuit executes priming system resistance
When resistance value measures, constant-current source D1 exports constant current, is successively closed the first calibration switch K10 and the second calibration switch K9, respectively
Voltage is generated on the first calibrating resistance R2 and the second calibrating resistance R3, output is to digital signal processor after amplifier D2
D3, the digital signal processor D3 record the resistance value of the first calibrating resistance R2 and the second calibrating resistance R3, and utilize institute
The resistance value for stating the first calibrating resistance R2 and the second calibrating resistance R3 of digital signal processor D3 record determines the priming system resistance
It is worth the error of measuring circuit；When measuring priming system resistance, constant-current source D1 exports constant current, closes and measured priming system resistance
The corresponding branch measurement switch of place priming system work branch and measurement switch K11, generate electricity on measured priming system resistance
Pressure, output gives digital signal processor D3, the digital signal processor D3 to record and is measured priming system electricity after amplifier D2
Resistance value is hindered, and according to the error of the determining priming system resistance value measuring circuit, obtains the measured priming system resistance
True value.
Further, fire when the priming system operating circuit both ends of a plurality of parallel connection provide priming system igniting by working power
The input voltage UIN of work product.
Further, the priming system operating switch, branch measurement switch, the first calibration switch K10, the second calibration switch
K9 and measurement switch K11 is relay.
Further, the priming system work branch and resistance measurement branch are 4.
Further, the gain adjustment resistance of the amplification factor for adjusting amplifier D2 is provided on the amplifier D2
R1, the both ends gain adjustment resistance R1 are separately connected two gain adjustment input pins of the amplifier D2.
Further, the digital signal processor D3 includes A/D conversion module, the output pin of the amplifier D2 with
The conversion input pin of the A/D conversion module connects；In the first calibrating resistance R2, the second calibrating resistance R3 and it is measured
The voltage generated on priming system resistance exports after amplifier D2 to the A/D conversion module of digital signal processor, the number
Signal processor D3 records the corresponding digital quantity of resistance converted through A/D conversion module.
Further, the electric current of the constant-current source D1 output is 25mA electric current.
Further, the first calibrating resistance R2 and the second calibrating resistance R3 is standard precision resistance.
The advantages of the present invention over the prior art are that:
(1) priming system resistance value measuring circuit of the invention, measuring circuit is mutually indepedent with operating circuit, and resistance in parallel is arranged
Value measurement branch, realizes that multichannel priming system resistance value successively independently measures；
(2) priming system resistance value measuring circuit of the invention calibrates circuit by setting, before measuring priming system resistance value, really
The error for determining priming system resistance value measuring circuit improves the accuracy of surveyed priming system resistance；In calibration circuit, setting
Standard precision resistance improves the precision of priming system resistance value measuring circuit；
(3) priming system resistance value measuring circuit of the invention measures electric current only 25mA, improves priming system resistance value measuring circuit
Safety.
Detailed description of the invention:
Fig. 1 is the circuit diagram of priming system resistance value measuring circuit of the present invention.
Specific embodiment
As shown in Figure 1, a kind of priming system resistance value measuring circuit of automatic calibration multichannel priming system circuit, the multichannel firer
Product circuit includes the first priming system work branch in parallel, the second priming system work branch, third priming system work branch and the
Four priming system work branch；The first priming system work branch is equipped with the first priming system resistance R4 and the work of the first priming system is opened
Close K1；The second priming system work branch is equipped with the second priming system resistance R5 and the second priming system operating switch K2；Described
Three priming system work branch are equipped with third priming system resistance R6 and third priming system operating switch K3；The 4th priming system work
Branch is equipped with the 4th priming system resistance R7 and the 4th priming system operating switch K4；Described four priming system operating circuits two in parallel
End is provided priming system input voltage UIN when priming system igniting by working power.
The priming system resistance value measuring circuit includes constant-current source D1, amplifier D2, digital signal processor D3, the first calibration
Circuit, the second calibration circuit, resistance measurement anode line, resistance measurement cathode line and resistance measurement parallel circuit.
Resistance measurement anode line one end is connect with the anode of the amplifier D2, and the other end and the constant-current source D1 connect
It connects, resistance measurement cathode line one end is connect with the cathode of the amplifier D2, the other end and the multichannel priming system circuit
One end connection.
The first calibration circuit and second have been arranged in parallel between the resistance measurement anode line and resistance measurement cathode line
Calibrate circuit；The first calibration circuit is equipped with the first calibrating resistance R2 and the first calibration switch K10, the second calibration electricity
Road is equipped with the second calibrating resistance R3 and the second calibration switch K9.
In the resistance measurement cathode line, the tie point and priming system operating circuit of circuit and resistance measurement cathode line are calibrated
Measurement switch K11 is equipped between the tie point of resistance measurement cathode line.
The gain adjustment resistance R1 of the amplification factor for adjusting amplifier D2, the increasing are provided on the amplifier D2
The benefit adjustment both ends resistance R1 are separately connected two gain adjustment input pins of the amplifier D2；The digital signal processor
D3 includes A/D conversion module, and the output pin of the amplifier D2 is connect with the conversion input pin of the A/D conversion module.
The resistance measurement parallel circuit includes the first resistor measurement branch equipped with first branch measurement switch K5, is equipped with
The second resistance that second branch measures switch K6 measures branch, and the 3rd resistor equipped with third branch measurement switch K7 measures branch
With the 4th resistance measurement branch for being equipped with the 4th branch measurement switch K8, four resistance measurement branches and four fire in parallel
Work product work branch is corresponding；
Resistance measurement parallel circuit one end is connect with the tie point of the resistance measurement anode line and constant-current source D1, the
Circuit between the other end of one resistance measurement branch and the first priming system resistance R4 and the first priming system operating switch K1
Connection makes the first priming system resistance R4 in the first priming system work branch and first resistor measurement branch tie point and resistance
It measures between cathode line and multichannel priming system operating circuit tie point；Second resistance measures the other end and second fire of branch
Circuit connection between work product resistance R5 and the second priming system operating switch K2 makes the second priming system resistance R5 in the second fire
Work product work branch measures branch tie point and resistance measurement cathode line with second resistance and connect with multichannel priming system operating circuit
Between point；3rd resistor measure branch the other end and the third priming system resistance R6 and third priming system operating switch K3 it
Between circuit connection, connect the third priming system resistance R6 in third priming system work branch and 3rd resistor measurement branch
Between point and resistance measurement cathode line and multichannel priming system operating circuit tie point；The other end of 4th resistance measurement branch and institute
The circuit connection between the 4th priming system resistance R7 and the 4th priming system operating switch K4 is stated, the 4th priming system resistance R7 is made
It works in the 4th priming system work branch and the 4th resistance measurement branch tie point and resistance measurement cathode line and multichannel priming system
Between circuit connection point.
Preferably, the first priming system operating switch K1, the second priming system operating switch K2, the work of third priming system are opened
K3, the 4th priming system operating switch K4 are closed, the first branch measures switch K5, and second branch measures switch K6, the measurement of third branch
Switch K7, it is relay that the 4th branch, which measures switch K8, the second calibration switch K9, the first calibration switch K10 and measurement switch K11,
Device.
Preferably, the electric current of the constant-current source D1 output is 25mA electric current, and small measurement electric current improves priming system resistance value
The safety of measuring circuit.
Preferably, the first calibrating resistance R2 and the second calibrating resistance R3 is standard precision resistance, using the accurate electricity of standard
Resistance is used as calibrating resistance, improves the measurement accuracy of priming system resistance value measuring circuit.
The course of work of the priming system resistance value measuring circuit of automatic calibration multichannel priming system circuit of the present invention includes
Circuit calibration and resistance value measure two stages:
Circuit calibration: firstly, all priming system operating switches, branch measurement switch, measurement switch, calibration switch are located
In opening state, it is then closed the first calibration switch K10, constant-current source D1 exports constant current, produces on the first calibrating resistance R2
Raw voltage, the voltage A/D conversion module of the output to digital signal processor D3, number letter after amplifier D2 amplification
Number processor D3 records the corresponding digital quantity X1 of resistance converted through A/D conversion module；Open the first calibration switch K10 simultaneously
It is closed the second calibration switch K9, constant-current source D1 exports constant current, generates voltage on the second calibrating resistance R3, which passes through
A/D conversion module of the output to digital signal processor D3, the digital signal processor D3 record warp after amplifier D2 amplification
The corresponding digital quantity X2 of resistance of A/D conversion module conversion；School is carried out to entire measuring circuit using measurement result twice
The relationship between digital quantity after standard, available measured resistance resistance value and A/D conversion, due to the first calibrating resistance R2 and second
Two resistance of calibrating resistance R3 are standard precision resistance, therefore the circuit measuring precision by calibration is greatly improved.
Resistance value measurement: when needing to measure the resistance value of the first priming system resistance R4, closure the first branch measurement switch K5 with
Switch K11 is measured, constant-current source D1 exports constant current, generates voltage on the first priming system resistance R4, and the voltage is by amplification
It is exported after device D2 to the A/D conversion module of digital signal processor D3, the digital signal processor D3 record is through A/D modulus of conversion
After the corresponding digital quantity X3 of resistance of block conversion, the measured resistance resistance value obtained using circuit calibration process and A/D conversion
Digital quantity between relationship can be calculated the first priming system resistance R4 resistance value true value.
Second branch measurement switch K6 and measurement switch K11 are successively closed, third branch measures switch K7 and measurement switch
K11, the 4th branch measure switch K8 and measurement switch K11, repeat resistance value measurement process, the second priming system resistance can be completed
The measurement of R5, third priming system resistance R6 and the 4th priming system resistance R7 resistance value.
The content being not described in detail in description of the invention belongs to the well-known technique of professional and technical personnel in the field.
Claims (7)
1. a kind of priming system resistance value measuring circuit of automatic calibration multichannel priming system circuit, it is characterised in that: the multichannel firer
Product circuit includes a plurality of priming system work branch in parallel, and every priming system work branch is equipped with priming system resistance and priming system
Operating switch；The priming system resistance value measuring circuit includes constant-current source D1, amplifier D2, digital signal processor D3, the first school
Quasi- circuit, the second calibration circuit, resistance measurement anode line, resistance measurement cathode line and resistance measurement parallel circuit；The resistance
Measurement anode line one end is connect with the anode of the amplifier D2, and the other end is connect with the constant-current source D1, the resistance measurement
Cathode line one end is connect with the cathode of the amplifier D2, and the other end is connect with the multichannel priming system circuit on one side, described
The first calibration circuit and the second calibration circuit have been arranged in parallel between resistance measurement anode line and resistance measurement cathode line；Described
One calibration circuit is equipped with the first calibrating resistance R2 and the first calibration switch K10, and the second calibration circuit is equipped with the second school
Quasi- resistance R3 and the second calibration switch K9；In the resistance measurement cathode line, the second calibration circuit and resistance measurement cathode
Measurement switch K11 is equipped between the tie point and priming system operating circuit and the tie point of resistance measurement cathode line of line；It is described to put
Big device D2 is connect with the digital signal processor D3；The times magnification for adjusting amplifier D2 is provided on the amplifier D2
Several gain adjustment resistance R1, two gain adjustments that the both ends gain adjustment resistance R1 are separately connected the amplifier D2 are defeated
Enter pin；The resistance measurement parallel circuit includes corresponding with a plurality of priming system work branch of the parallel connection a plurality of in parallel
Resistance measurement branch, every resistance measurement branch are equipped with branch measurement switch, resistance measurement parallel circuit one end and institute
It states resistance measurement anode line to connect with the tie point of constant-current source D1, every resistance measurement branch other end and corresponding priming system work
Make branch connection, so that priming system resistance is in resistance measurement branch and priming system work branch tie point and resistance measurement cathode
Between line and multichannel priming system operating circuit tie point；The priming system resistance value measuring circuit executes the measurement of priming system resistance
When, constant-current source D1 exports constant current, the first calibration switch K10 and the second calibration switch K9 is successively closed, respectively in the first school
Voltage is generated on quasi- resistance R2 and the second calibrating resistance R3, digital signal processor D3, the number are given in output after amplifier D2
Word signal processor D3 records the resistance value of the first calibrating resistance R2 and the second calibrating resistance R3, and utilizes the digital signal
The resistance value of the first calibrating resistance R2 and the second calibrating resistance R3 of processor D3 record determine the priming system resistance value measuring circuit
Error；When measuring priming system resistance, constant-current source D1 exports constant current, closes and priming system where measured priming system resistance
The corresponding branch measurement switch of work branch and measurement switch K11, generate voltage on measured priming system resistance, through amplifier
Output gives digital signal processor D3, the digital signal processor D3 to record and is measured priming system resistance after D2, and root
According to the error of the determining priming system resistance value measuring circuit, the true value of the measured priming system resistance is obtained.
2. priming system resistance value measuring circuit according to claim 1, it is characterised in that: a plurality of priming system work of the parallel connection
Make the input voltage UIN of priming system when branch both ends provide priming system igniting by working power.
3. priming system resistance value measuring circuit according to claim 1, it is characterised in that: the priming system operating switch, branch
Drive test amount switch, the first calibration switch K10, the second calibration switch K9 and measurement switch K11 are relay.
4. priming system resistance value measuring circuit according to claim 1, it is characterised in that: the priming system work branch and electricity
Resistance measurement branch is 4.
5. priming system resistance value measuring circuit according to claim 1, it is characterised in that: the digital signal processor D3 packet
A/D conversion module is included, the output pin of the amplifier D2 is connect with the conversion input pin of the A/D conversion module；Institute
The voltage generated on the first calibrating resistance R2, the second calibrating resistance R3 and measured priming system resistance is stated, it is defeated after amplifier D2
Out to the A/D conversion module of digital signal processor, the digital signal processor D3 records the electricity converted through A/D conversion module
Hinder the corresponding digital quantity of resistance value.
6. priming system resistance value measuring circuit according to claim 1, it is characterised in that: the electric current of the constant-current source D1 output
For 25mA electric current.
7. priming system resistance value measuring circuit according to claim 1, it is characterised in that: the first calibrating resistance R2 and the second school
Quasi- resistance R3 is standard precision resistance.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610958883.6A CN106556743B (en) | 2016-10-27 | 2016-10-27 | A kind of priming system resistance value measuring circuit of automatic calibration multichannel priming system circuit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610958883.6A CN106556743B (en) | 2016-10-27 | 2016-10-27 | A kind of priming system resistance value measuring circuit of automatic calibration multichannel priming system circuit |
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| Publication Number | Publication Date |
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| CN106556743A CN106556743A (en) | 2017-04-05 |
| CN106556743B true CN106556743B (en) | 2019-09-06 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107958802A (en) * | 2017-10-23 | 2018-04-24 | 上海卫星工程研究所 | The VMOS drive circuits and its control method of spaceborne priming system |
| CN111308206B (en) * | 2020-02-21 | 2022-04-15 | 苏州华兴源创科技股份有限公司 | Impedance detection device and detection method thereof |
| CN113960371A (en) * | 2020-07-21 | 2022-01-21 | 北京机械设备研究所 | Resistance measuring circuit of initiating explosive device ignition return circuit |
| CN112180172A (en) * | 2020-09-28 | 2021-01-05 | 湖北三江航天红峰控制有限公司 | Resistance measuring system and method for multi-path initiating explosive device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4763077A (en) * | 1986-10-20 | 1988-08-09 | Conax Florida Corporation | Sensor circuit responsive to different fluid conductivities |
| CN201765276U (en) * | 2010-08-04 | 2011-03-16 | 江西洪都航空工业集团有限责任公司 | Explosive device resistance tester |
| CN201917614U (en) * | 2010-12-30 | 2011-08-03 | 中国航天科技集团公司第五研究院第五一八研究所 | Space ship-oriented explosive device testing device |
| CN202159099U (en) * | 2011-07-25 | 2012-03-07 | 中国石油天然气股份有限公司 | Multichannel resistivity measuring device and system |
| CN102288833A (en) * | 2011-08-11 | 2011-12-21 | 北京电子工程总体研究所 | Priming system automatic detection device |
| CN103823116A (en) * | 2012-11-18 | 2014-05-28 | 哈尔滨市三和佳美科技发展有限公司 | Self-checking type precision battery internal resistance instrument |
| CN203396842U (en) * | 2013-08-08 | 2014-01-15 | 成都天奥测控技术有限公司 | Multichannel automatic circuit tester |
| CN104198851B (en) * | 2014-08-28 | 2017-04-12 | 湖北三江航天红峰控制有限公司 | Switching device and method applied to safety measurement of multipath initiating explosive devices |
| CN204085337U (en) * | 2014-09-03 | 2015-01-07 | 陕西特恩电子科技有限公司 | A kind of fire-working article test system |
| CN205280826U (en) * | 2015-11-24 | 2016-06-01 | 北京航天万源科技公司 | Priming sytem resistance measuring circuit |
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