CN108362368A - Instrument automation detecting system and weighing instrument automated detection method - Google Patents
Instrument automation detecting system and weighing instrument automated detection method Download PDFInfo
- Publication number
- CN108362368A CN108362368A CN201810488012.1A CN201810488012A CN108362368A CN 108362368 A CN108362368 A CN 108362368A CN 201810488012 A CN201810488012 A CN 201810488012A CN 108362368 A CN108362368 A CN 108362368A
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- 238000001514 detection method Methods 0.000 title claims abstract description 85
- 238000005303 weighing Methods 0.000 title claims abstract description 15
- 238000012360 testing method Methods 0.000 claims abstract description 36
- 230000002159 abnormal effect Effects 0.000 claims description 5
- 230000005611 electricity Effects 0.000 claims description 3
- 238000004088 simulation Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 16
- 238000010586 diagram Methods 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000003860 storage Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01G—WEIGHING
- G01G23/00—Auxiliary devices for weighing apparatus
- G01G23/01—Testing or calibrating of weighing apparatus
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D18/00—Testing or calibrating apparatus or arrangements provided for in groups G01D1/00 - G01D15/00
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Testing Electric Properties And Detecting Electric Faults (AREA)
Abstract
The invention discloses a kind of instrument automation detecting system and weighing instrument automated detection methods, system includes touch screen unit, and multimeter, PLC module and the analog module being connect with the touch screen unit, the multimeter is used to measure the voltage and current of access instrument, and is transferred to touch screen unit；The PLC module carries out designated state for exporting digital output modul access instrument；The analog module simulates weight signal for exporting analog signals to the access instrument.This programme simplifies the testing process of access instrument, improves the detection efficiency of access instrument, the artificial careless omission for reducing and avoiding detection to occur；And can after the completion of automatic detection can detailed record testing result, in case staff's subsequent calls testing result.
Description
Technical field
The present invention relates to instrument detection field, a kind of instrument automation detecting system and weighing instrument are especially related to
Automated detection method.
Background technology
Currently, production division is detected as artificial detection before instrument manufacture, since detection project is more, the detection of each single item walks
Rapid cumbersome, artificial detection needs take considerable time that new hand also needs training and is familiar with testing process.It is time-consuming, not only influence
Production efficiency, and it is also possible to the case where leak detection error detection inspection less occur in detection.In addition the record detected is also artificial
It goes to record, under efficiency is very low.
Invention content
In order to solve the defect of the above-mentioned prior art, the object of the present invention is to provide a kind of instrument automation detecting system and
Weighing instrument automated detection method simplifies testing process, reduces the artificial careless omission that detection occurs.
In order to achieve the above objectives, the technical scheme is that：
A kind of instrument automation detecting system, including touch screen unit, and the general-purpose that is connect with the touch screen unit
Table, PLC module and analog module,
The multimeter is used to measure the voltage and current of access instrument, and is transferred to touch screen unit；
The PLC module carries out designated state for exporting digital output modul access instrument；
The analog module simulates weight signal for exporting analog signals to the access instrument.
Further, further include having the barcode scanner being connect with the touch screen unit, the barcode scanner is accessed for reading
The barcode data of instrument.
Further, the output switch parameter of the access instrument terminates the input terminal of the PLC module, the access instrument
On-off signal terminate the output end of the PLC module, by the touch screen unit control the access instrument with it is described
Sequential between PLC module tests switching value.
Further, the multimeter connects the touch screen unit by RS232, and the access instrument passes through RS485
Connect the touch screen unit.
The invention also provides a kind of weighing instrument automated detection methods, are detected using instrument automation as described above
System includes the following steps：
Bar code in barcode scanner scanning access instrument；
Judge whether serial ports is normal；
Judgement serial ports exports failure if abnormal,；
If normal, then detection switch amount；
It detects and demarcates weight；
Whether judge to access instrument with analog output；
If so, detection and Calibrated current analog quantity, detect voltage analog；
Show testing result；
Generate detection record.
Further, described to detect and demarcate weight step, include the following steps：
Analog module exports minimum weight analog quantity to access instrument；
Calibration access instrument zero；
Analog module exports maximum weight analog quantity to access instrument；
The gain weight of calibration access instrument；
Analog module exports analog quantity intermediate weight analog quantity；
Read the current weight data of access instrument；
Judge whether the weight data read is equal to the half of gain weight；
If weight data is equal to the half of gain weight, start hop count detection, access instrument in the detection stipulated time
Whether reading is less than setting value；
If being less than setting value, judgement is normal, exports result.
Further, the detection and Calibrated current analog quantity, detect voltage analog step, include the following steps：
The corresponding DA codes of initialized target electric current 4-24mA；
The corresponding DA codes of 4mA are exported to access instrument；
Judge the difference of multimeter current detection value and 4mA whether within the scope of allowable error；
If in error range, exporting the corresponding DA codes of 12mA to access instrument；
Judge the difference of multimeter current detection value and 12mA whether within the scope of allowable error；
If in error range, exporting the corresponding DA codes of 20mA to access instrument；
Judge the difference of multimeter current detection value and 20mA whether within the scope of allowable error；
If in error range, exporting the corresponding DA codes of 24mA to access instrument；
The current detection value of multimeter is read, and access instrument is written.
Further, the detection and Calibrated current analog quantity, detect voltage analog step, include the following steps：
Analog module exports minimum weight analog quantity corresponding with minimum target voltage；Judge multimeter voltage detecting value
Whether within the scope of minimum target voltage allowable error；
If in range, analog module exports maximum weight analog quantity corresponding with maximum target voltage；
Judge multimeter voltage detecting value whether within the scope of maximum target voltage allowable error；
If in range, judgement access instrument is normal, exports result.
Further, the detection switch amount step, includes the following steps；
Output and the input interface break-make of touch screen unit control access instrument and PLC module；
Obtain output and the corresponding status data of input interface of access instrument and PLC module；
Judge whether the output of access instrument and PLC module and input interface are normal according to status data；
If normal, then switching value is completed, testing result is exported.
The beneficial effects of the invention are as follows：The testing process of access instrument is simplified, the detection efficiency of access instrument is improved, subtracts
Less and avoid detection occur artificial careless omission；And can after the completion of automatic detection can detailed record testing result, with
Standby staff's subsequent calls testing result.
Description of the drawings
Fig. 1 is a kind of structure diagram of instrument automation detecting system of the present invention；
Fig. 2 is a kind of method flow diagram of weighing instrument automated detection method of the present invention；
Fig. 3 is a kind of method flow diagram of detection switch amount of the present invention；
Fig. 4 is a kind of flow chart of detection switch amount of a specific embodiment of the invention；
Fig. 5 is a kind of detection of the present invention and demarcates the method flow diagram of weight；
Fig. 6 is a kind of method flow diagram of detection current-mode analog quantity of the present invention；
Fig. 7 is a kind of method flow diagram of nominal voltage analog quantity of the present invention.
Specific implementation mode
To illustrate the thought and purpose of the present invention, the present invention is done further below in conjunction with the drawings and specific embodiments
Explanation.
CE, electric current allowable error.
VE, voltage allowable error.
Referring to Fig.1, a specific embodiment of the invention, a kind of instrument automation detecting system, including touch screen unit are proposed
10, and the multimeter 40, PLC module 20 and the analog module 50 that are connect with touch screen unit 10.Wherein,
Touch screen unit 10, is the control centre of entire detecting system, and mould is respectively accessed by sending and receiving instructions coordinate
Block executes the testing process of instrument, and real-time display test process.Touch screen unit 10 can show test process state, user
Corresponding AM access module work can also be controlled directly by touching by corresponding control instruction is inputted.
Multimeter 40, the voltage and current for measuring access instrument 30, and it is transferred to touch screen unit 10, by touch screen
Unit 10 is compared and judges.
PLC module 20 carries out designated state for exporting digital output modul access instrument 30.
Analog module 50 gives access instrument 30 for exporting analog signals, simulates weight signal.
Specifically, a kind of instrument automation detecting system further includes being useful for as each AM access module and touch screen unit 10
The power supply of power supply, power supply design parameter are：90~265V of AC can export the direct currents such as 24V, 5V and supply electricity to detecting system and respectively access
Module provides electric energy, ensures the normal work of detecting system AM access module.
Specifically, a kind of instrument automation detecting system further includes having the barcode scanner 60 being connect with touch screen unit 10, item
Code rifle 60 is used to read the barcode data of access instrument 30.It is accessed in instrument 30 at every and sticks a unique corresponding item therewith
Code, includes the identity information of corresponding access instrument 30 in bar code, for example, the time of making the product, place, batch, manufacturer and
Hardware information used etc., the access correspondence of instrument 30 can be got by scanning the bar code in access instrument 30 by barcode scanner 60
Identity information facilitate and call after its staff for being associated with the storage of subsequent testing result.
Specifically, the input terminal of the output switch parameter termination PLC module 20 of access instrument 30, accesses the switching value of instrument 30
The output end of input termination PLC module 20.The sequential between access instrument 30 and PLC module 20 is controlled by touch screen unit 10
Switching value is tested, that is to say the output and input for accessing instrument 30 and PLC module 20 by control by touch screen unit 10
The sequence break-make of interface, and the virtual condition for detecting output and input interface is consistent with dbjective state, to complete to switch
The detection of amount.
Specifically, multimeter 40, by RS232 connections touch screen unit 10, access instrument 30 is touched by RS485 connections
Shield unit 10.
It is noted that the access instrument 30 that this automatization test system can be used for detecting can be weighing instrument,
Can also be other measuring instruments, as long as being provided with serial ports and On-off signal output in access instrument, you can use this
The automated detection system of scheme carries out automatic detection.
This programme simplifies the testing process of access instrument 30, improves the detection efficiency of access instrument 30, reduces and avoid
The artificial careless omission that detection occurs；And can after the completion of automatic detection can detailed record testing result, in case work people
Member's subsequent calls testing result.
With reference to figure 2-6, another specific embodiment of the present invention also proposed a kind of weighing instrument automated detection method, use
Instrument automation detecting system described in an embodiment as above, method specifically include following steps：
Bar code on S10, barcode scanner scanning access instrument.
S20, judge whether the serial ports for accessing instrument is normal.
S41, judgement serial ports exports failure if abnormal,.
S40, if normal, then detection switch amount.
S50, detection simultaneously demarcate weight.
S60, whether judge to access instrument with analog output.
S70, if so, detection and Calibrated current analog quantity, detect voltage analog.
S80, display testing result.
S90, detection record is generated.
For step S10-S90, corresponding control instruction is exported by touch screen unit, controls AM access module (such as PLC moulds
Block, analog module and universal meter) corresponding work is carried out, complete above-mentioned detection process.
For step S10, the bar code in access instrument is scanned by barcode scanning gun, obtains the identity information of access instrument, example
Such as time of making the product, place, batch, manufacturer and the hardware information used are deposited for being associated with subsequent testing result
Storage facilitates its staff to search calling later.
For step S20, judges whether the serial ports for accessing instrument is normal, only under the premise of serial ports is normal, access instrument
Table can receive subsequent control instruction or analog quantity information, when serial ports is abnormal, enter step S41：Judgement string
Mouth output failure.
For step S80 and step S90, testing result is shown after automatic detection and generates corresponding detection detection
Record, in case staff's subsequent calls.
Specifically after serial ports testing result is normal, step S40, step S50, step S60 and step are carried out successively
S70。
With reference to figure 3, step S40 includes the following steps；
Output and the input interface break-make of S401, touch screen unit control access instrument and PLC module.
S402, output and the corresponding status data of input interface for obtaining access instrument and PLC module.
S403, judge whether the output of access instrument and PLC module and input interface are normal according to status data.
S404, if normal then completes switching value, exports testing result.
For step S401-S404, touch screen unit accesses output and the input interface of instrument and PLC module by control
Break-make, and the virtual condition for detecting output and input interface is consistent with dbjective state, to complete the detection of switching value.
Switching value is completed in the virtual condition detected and dbjective state of output and input interface, and exports testing result.
When switching value, touch screen module first controls the output interface of access instrument and the input interface of PLC module is led
It is logical, the state of the output interface of access instrument and the input interface of PLC module is read, and record；Then touch screen module is controlled again
The output interface of system access instrument and the input interface of PLC module disconnect, and read the output interface and PLC module for accessing instrument
The state of input interface, and record；Finally judge whether two next states are corresponding with the state of target, judges to open if all corresponding to
Pass amount is normal, and completes switching value test.
It is the specific steps that switching value test is carried out in one embodiment of the invention with reference to figure 4, wherein：
OUT1 indicates access meter switch amount output interface 1；
OUT2 indicates access meter switch amount output interface 2；
IN1 indicates access meter switch amount input interface 1；
I0.0 indicates PLC module input interface 1；
I0.1 indicates PLC module input interface 2；
Q0.0 indicates PLC module output interface 1.
With reference to figure 4, step S50 includes the following steps：
S501, analog module export minimum weight analog quantity to access instrument.
S502, calibration access instrument zero.
S503, analog module export maximum weight analog quantity to access instrument.
The gain weight of S504, calibration access instrument.
S505, analog module export intermediate weight analog quantity.
S506, the current weight data of access instrument is read.
Whether the weight data that S507, judgement are read is equal to the half of gain weight.
If S508, weight data are equal to the half of gain weight, start hop count detection, instrument is accessed in the detection stipulated time
Whether the reading of table is less than setting value.
If S509, being less than setting value, judgement is normal, exports result.
For step S501-S509, minimum weight analog quantity is to refer to the accession to the corresponding simulation of minimum test weight of instrument
Amount, that is, minimum analog quantity is inputted under normal circumstances to access instrument, the weight of weighing that access instrument is shown is exactly for minimum
Weight is tested, similarly understands maximum weight analog quantity.By first determining the difference between minimum test weight and full test weight
Value, then detect reading of the access instrument after input the intermediate weight analogue value, then the weight data read by judgement whether
Equal to the half of gain weight, to carry out weight calibration, accurate and effective.
Specifically, for step S508, hop count refers to detecting the numerical value of instrument in the case that input weight analog quantity is constant
Whether change, if changed more than being hop count if preset range, judgement access instrument is abnormal condition.
With reference to figure 5, step S70 detections and Calibrated current analog quantity include the following steps：
The corresponding DA codes of S7010, initialized target electric current 4mA-24mA.
S7011, the corresponding DA codes of output 4mA to access instrument.
S7012, judge the difference of multimeter current detection value and 4mA whether within the scope of allowable error.
If S7013, in error range, the corresponding DA codes of output 12mA are to accessing instrument.
S7014, judge the difference of multimeter current detection value and 12mA whether within the scope of allowable error.
If S7015, in error range, the corresponding DA codes of output 20mA are to accessing instrument.
S7016, judge the difference of multimeter current detection value and 20mA whether within the scope of allowable error.
If S7017, in error range, the corresponding DA codes of output 24mA are to accessing instrument.
S7018, the current detection value for reading multimeter, and access instrument is written.For step S7010-S7018, touch
Shield the corresponding DA codes of unit initialization 4-24mA, and DA codes are exported to accessing instrument, universal meter can be with after input DA codes
Detect a corresponding current value, such as the corresponding DA codes of input 4mA, an electric current I of universal meter detection.It sequentially inputs
The corresponding DA codes of 4/12/20mA, and the difference between 4/12/20mA and I is judged whether in the error range (CE) of permission, if
All in error range, then enter 24MA calibration modes, the actual current value that record multimeter is read, and instrument progress is written
Calibration, cooperation and the zero determined, complete the calibration of electric current.
With reference to figure 6, step S70 detection voltage analogs include the following steps：
S7020, analog module export minimum weight analog quantity corresponding with minimum target voltage./ simulation weight output
Maximum value and minimum value
S7021, judge multimeter voltage detecting value whether within the scope of minimum target voltage allowable error.
If S7022, in range, analog module exports maximum weight analog quantity corresponding with maximum target voltage.
S7023, judge multimeter voltage detecting value whether within the scope of maximum target voltage allowable error.
If S7024, in range, judgement access instrument is normal, exports result.
For step S7020- step S7024, minimum weight analog quantity corresponding with minimum target voltage refers to inputting
When minimum weight analog quantity is to access instrument, multimeter can detect that access instrument generates a detection voltage U, maximum target electricity
Pressure and maximum weight analog quantity are similarly.By judging minimum target voltage and maximum target voltage respectively between detection voltage
Whether whether difference normal to judge to access instrument in allowable error range (VE), and nominal voltage.
This programme simplifies the testing process of access instrument, improves the detection efficiency of access instrument, reduces and avoid detecting
The artificial careless omission that link occurs；And can after the completion of automatic detection can detailed record testing result, in case after staff
It is continuous to call testing result.
The foregoing is merely the preferred embodiment of the present invention, are not intended to limit the scope of the invention, every utilization
Equivalent structure or equivalent flow shift made by description of the invention and accompanying drawing content is applied directly or indirectly in other correlations
Technical field, be included within the scope of the present invention.
Claims (9)
1. a kind of instrument automation detecting system, which is characterized in that connect including touch screen unit, and with the touch screen unit
Multimeter, PLC module and the analog module connect,
The multimeter is used to measure the voltage and current of access instrument, and is transferred to touch screen unit；
The PLC module carries out designated state for exporting digital output modul access instrument；
The analog module simulates weight signal for exporting analog signals to the access instrument.
2. instrument automation detecting system as described in claim 1, which is characterized in that further include having and the touch screen unit
The barcode scanner of connection, the barcode scanner are used to read the barcode data of access instrument.
3. instrument automation detecting system as described in claim 1, which is characterized in that the output switch parameter of the access instrument
The input terminal of the PLC module is terminated, the On-off signal of the access instrument terminates the output end of the PLC module, passes through
The touch screen unit controls the sequential between the access instrument and the PLC module to test switching value.
4. instrument automation detecting system as described in claim 1, which is characterized in that the multimeter is connected by RS232
The touch screen unit, the access instrument connect the touch screen unit by RS485.
5. a kind of weighing instrument automated detection method, which is characterized in that using the instrument automation as described in claim 1-5
Detecting system specifically includes following steps：
Bar code in barcode scanner scanning access instrument；
Judge whether serial ports is normal；
Judgement serial ports exports failure if abnormal,；
If normal, then detection switch amount；
It detects and demarcates weight；
Whether judge to access instrument with analog output；
If so, detection and Calibrated current analog quantity, detect voltage analog；
Show testing result；
Generate detection record.
6. weighing instrument automated detection method as claimed in claim 5, which is characterized in that the detection simultaneously demarcates weight step
Suddenly, include the following steps：
Analog module exports minimum weight analog quantity to access instrument；
Calibration access instrument zero；
Analog module exports maximum weight analog quantity to access instrument；
The gain weight of calibration access instrument；
Analog module exports intermediate weight analog quantity；
Read the current weight data of access instrument；
Judge whether the weight data read is equal to the half of gain weight；
If weight data is equal to the half of gain weight, start hop count detection, the reading of access instrument in the detection stipulated time
Whether setting value is less than；
If being less than setting value, judgement is normal, exports result.
7. weighing instrument automated detection method as claimed in claim 6, which is characterized in that the detection and Calibrated current mould
Analog quantity detects voltage analog step, includes the following steps：
The corresponding DA codes of initialized target electric current 4mA-24mA；
The corresponding DA codes of 4mA are exported to access instrument；
Judge the difference of multimeter current detection value and 4mA whether within the scope of allowable error；
If in error range, exporting the corresponding DA codes of 12mA to access instrument；
Judge the difference of multimeter current detection value and 12mA whether within the scope of allowable error；
If in error range, exporting the corresponding DA codes of 20mA to access instrument；
Judge the difference of multimeter current detection value and 20mA whether within the scope of allowable error；
If in error range, exporting the corresponding DA codes of 24mA to access instrument；
The current detection value of multimeter is read, and access instrument is written.
8. weighing instrument automated detection method as described in claim 5 or 7, which is characterized in that the detection simultaneously demarcates electricity
Flow field simulation amount detects voltage analog step, includes the following steps：
Analog module exports minimum weight analog quantity corresponding with minimum target voltage；
Judge multimeter voltage detecting value whether within the scope of minimum target voltage allowable error；
If in range, analog module exports maximum weight analog quantity corresponding with maximum target voltage；
Judge multimeter voltage detecting value whether within the scope of maximum target voltage allowable error；
If in range, judgement access instrument is normal, exports result.
9. weighing instrument automated detection method as claimed in claim 5, which is characterized in that the detection switch amount step,
Include the following steps；
Output and the input interface break-make of touch screen unit control access instrument and PLC module；
Obtain output and the corresponding status data of input interface of access instrument and PLC module；
Judge whether the output of access instrument and PLC module and input interface are normal according to status data；
If normal, then switching value is completed, testing result is exported.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810488012.1A CN108362368A (en) | 2018-05-15 | 2018-05-15 | Instrument automation detecting system and weighing instrument automated detection method |
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| CN201810488012.1A CN108362368A (en) | 2018-05-15 | 2018-05-15 | Instrument automation detecting system and weighing instrument automated detection method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111693741A (en) * | 2020-06-23 | 2020-09-22 | 李庆峰 | 4-20mA current type analog quantity input/output disconnection-free wiring terminal and measuring method |
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