CN107132502A - A kind of RS485 communication test devices of electric energy meter - Google Patents
A kind of RS485 communication test devices of electric energy meter Download PDFInfo
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- CN107132502A CN107132502A CN201710320352.9A CN201710320352A CN107132502A CN 107132502 A CN107132502 A CN 107132502A CN 201710320352 A CN201710320352 A CN 201710320352A CN 107132502 A CN107132502 A CN 107132502A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R35/00—Testing or calibrating of apparatus covered by the other groups of this subclass
- G01R35/04—Testing or calibrating of apparatus covered by the other groups of this subclass of instruments for measuring time integral of power or current
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- General Physics & Mathematics (AREA)
- Measurement Of Resistance Or Impedance (AREA)
Abstract
The invention provides a kind of RS485 communication test devices of electric energy meter, its can before packaging of dispatching from the factory Validity Test RS485 communication functions again, so as to ensure the communication qualification rate of electric energy meter；It includes electric energy meter, it also includes relay module, detection module, control module, the ammeter correspondence is electrically connected on the relay module, the delivery outlet of the relay module is correspondingly connected on the detection module, the delivery outlet of the detection module is correspondingly connected in the control module, the control module control connection relay module, and communication port on the control module, relay module is correspondingly connected on PC.
Description
Technical field
The present invention relates to communication check technical field, the RS485 communication test devices of specially a kind of electric energy meter.
Background technology
Needed in intelligent electric energy meter finished product production testing technique carry out voltage-withstand test, voltage-withstand test be examine electrical equipment, electrically
Equipment, electric device, electric wiring and electrical safety apparatus etc. bear one of main method of overvoltage ability, and it is in electric energy
Application 4.0KV alternating voltages between the main electrical scheme terminal and auxiliary terminal block (wherein comprising RS485 interfaces) of table, and RS485
Interface circuit, which is easy to cause, the soft water station problem such as punctures, although the local damage of RS485 interface circuits sometimes, has no effect on list
The communication of platform electric energy meter and host computer, but the follow-up many electric energy meter connected network communications work of influence is likely to, and have hidden danger
Circuit will go wrong sooner or later.
The content of the invention
In view of the above-mentioned problems, the invention provides a kind of RS485 communication test devices of electric energy meter, it can be in packaging of dispatching from the factory
The preceding RS485 communication functions of Validity Test again, so as to ensure the communication qualification rate of electric energy meter.
Its technical scheme is such, and it includes electric energy meter, it is characterised in that it also includes relay module, detection mould
Block, control module, the ammeter correspondence are electrically connected on the relay module, and the delivery outlet correspondence of the relay module connects
It is connected on the detection module, the delivery outlet of the detection module is correspondingly connected in the control module, the control module
The control connection relay module, and communication port on the control module, relay module is correspondingly connected on PC.
The control module includes model R5F212BCSDFP auspicious Sa single-chip microcomputer；The detection module includes resistance R1
~R9, electric capacity C1~C6, diode D1, D2, potentiometer RP1, RP2, comparator U1A, U1B, light emitting diode L1, L2, compare
Device U1A, U1B use model LM258 operational amplifiers；Described resistance R2, R6 one end connect with one end of the resistance R1
Connect, the other end of the resistance R3, electric capacity C1 one end with the resistance R2 is connected, and the other end C1 of the electric capacity C1 connects
Ground, the other end of the resistance R3 is connected with the positive input terminal of the comparator U1A, the negative input end of the comparator U1A with
One end of the electric capacity C2, potentiometer RP1 adjustable side connection, a termination power+5V of the potentiometer RP1, the current potential
Device RP1, C2 other end is grounded after being connected, the output end of the comparator U1A and resistance R4 one end, diode D1
Positive pole is connected, and the negative pole of the diode D1 connects the resistance R5, the other end of the resistance R4 and the one of the electric capacity C3
End, light emitting diode L1 positive pole connection, the other end of the electric capacity C3, light emitting diode L1 negative pole are grounded after being connected；Institute
State the other end of resistance R7, electric capacity the C4 one end with the resistance R6 to be connected, the other end of the resistance R7 connects the ratio
Compared with device U1B negative input end, termination power-a 5V, the potentiometer RP2 of the potentiometer RP2 adjustable side and electric capacity C5
One end be connected after be connected with the positive input terminal of the comparator U1B, after the potentiometer RP2 is connected with the electric capacity C5 other end
Ground connection, the output end of the comparator U1B is connected with one end of the resistance R8, diode D2 positive pole, the diode D2
Negative pole connect the resistance R9, one end with the electric capacity C6 of the other end of the resistance R8, light emitting diode L2 positive pole
Connection, the other end of the electric capacity C6, light emitting diode L2 negative pole are grounded after being connected.
The beneficial effects of the invention are as follows before packaging of dispatching from the factory, electric energy meter correspondence is electrically connected on relay module, relay
The delivery outlet of module is correspondingly connected on detection module, and the delivery outlet of detection module is correspondingly connected in control module, controls mould
Communication port on block control connection relay module, and control module, relay module is correspondingly connected on PC, detection module
Check UP test again to electric energy meter, and the height of signal level judges RS485 interfaces when can be by testing RS485 communications
The problem of circuit, effective detection RS485 communication function, and can be by the automatically derived test result of PC, so as to ensure that electricity
The communication qualification rate of energy table, in order to follow-up normal cluster communication work.
Brief description of the drawings
Fig. 1 is the structural representation of the present invention；
Fig. 2 is the circuit theory diagrams of detection module.
Embodiment
As shown in Figure 1 and Figure 2, the present invention includes 4 electric energy meters 1, and it also includes relay module 2, detection module 3, control
Module 4, the correspondence of electric energy meter 1 is electrically connected on relay module 2, and the delivery outlet of relay module 2 is correspondingly connected to detection module 3
On, the delivery outlet of detection module 3 is correspondingly connected in control module 4, the control connection relay of control module 4 module 2, and control
Communication port in module 4, relay module 2 is correspondingly connected on COM1, COM2 of PC 5 communication serial ports, i.e. relay module 2
Connected by two terminals of RS485A1, RS485B1, control module 4 is connected by two terminals of RS485A2, RS485B2.
Control module 4 includes model R5F212BCSDFP auspicious Sa single-chip microcomputer；Detection module 3 include resistance R1~R9,
Electric capacity C1~C6, diode D1, D2, potentiometer RP1, RP2, comparator U1A, U1B, light emitting diode L1, L2, comparator U1A,
U1B uses model LM258 operational amplifiers；The one end of resistance R2, R6 one end with resistance R1 is connected, resistance R3, electric capacity
The other end of the C1 one end with resistance R2 is connected, electric capacity C1 other end C1 ground connection, resistance the R3 other end and comparator U1A
Positive input terminal connection, comparator U1A negative input end is connected with electric capacity C2 one end, potentiometer RP1 adjustable side, potentiometer
A RP1 termination power+5V, potentiometer RP1, C2 other end are grounded after being connected, and comparator U1A output end is with resistance R4's
One end, diode D1 positive pole connection, diode D1 negative pole connection resistance R5, the resistance R4 other end and the one of electric capacity C3
End, light emitting diode L1 positive pole connection, the electric capacity C3 other end, light emitting diode L1 negative pole are grounded after being connected；Resistance R7,
The other end of the electric capacity C4 one end with resistance R6 is connected, resistance R7 other end connection comparator U1B negative input end, current potential
A device RP2 termination power -5V, potentiometer RP2 adjustable side be connected with electric capacity C5 one end after and comparator U1B positive input
End connection, potentiometer RP2 is grounded after being connected with the electric capacity C5 other end, comparator U1B output end and resistance R8 one end, two
Pole pipe D2 positive pole connection, diode D2 negative pole connection resistance R9, the resistance R8 other end and electric capacity C6 one end, luminous two
Pole pipe L2 positive pole connection, the electric capacity C6 other end, light emitting diode L2 negative pole are grounded after being connected.
The present invention operation principle be that resistance R1 two ends connect RS485 A, B terminal respectively, by potentiometer RP1,
RP2 can adjust respectively setting positive level, negative level, compare by comparator U1A, positive level voltage swing can be tested, by than
Compare compared with device U1B, negative level voltage swing can be tested, pass through positive level voltage, negative level voltage tester result and setting value（It is false
It is set to 1.2V）Compare, if positive level voltage tester result is more than 1.2V, the RS485 signal positive levels of ammeter are normal；Negative level
If voltage tester result absolute value is more than 1.2V, the RS485 signal negative levels of ammeter are normal；And can be by detection module 3
Light emitting diode L1, L2 turn on/off intuitively to show, and facilitate read test result on PC, tested so as to pass through
The problem of height of signal level is to judge RS485 interface circuits when RS485 communicates, so as to ensure that the communication of electric energy meter is qualified
Rate, in order to follow-up normal cluster communication work.
Claims (2)
1. a kind of RS485 communication test devices of electric energy meter, it includes electric energy meter, it is characterised in that it also includes relay mould
Group, detection module, control module, ammeter correspondence are electrically connected on the relay module, the relay module it is defeated
Outlet is correspondingly connected on the detection module, and the delivery outlet of the detection module is correspondingly connected in the control module, institute
State the control module control connection relay module, and the communication port correspondence connection on the control module, relay module
In on PC.
2. a kind of RS485 communication test devices of electric energy meter according to claim 1, the control module includes model
R5F212BCSDFP auspicious Sa single-chip microcomputer；The detection module includes resistance R1~R9, electric capacity C1~C6, diode D1, D2, electricity
Position device RP1, RP2, comparator U1A, U1B, light emitting diode L1, L2, comparator U1A, U1B are put using model LM258 computings
Big device；The one end of described resistance R2, R6 one end with the resistance R1 is connected, the resistance R3, electric capacity C1 one end with
The other end connection of the resistance R2, the other end C1 ground connection of the electric capacity C1, the other end of the resistance R3 is compared with described
Device U1A positive input terminal connection, the negative input end of the comparator U1A and the electric capacity C2 one end, potentiometer RP1 regulation
End connection, termination power+a 5V, described potentiometer RP1, C2 of the potentiometer RP1 other end is grounded after being connected, the ratio
Output end compared with device U1A is connected with one end of the resistance R4, diode D1 positive pole, the negative pole connection institute of the diode D1
Resistance R5 is stated, the other end of the resistance R4 is connected with one end of the electric capacity C3, light emitting diode L1 positive pole, the electric capacity
The C3 other end, light emitting diode L1 negative pole are grounded after being connected；The resistance R7, electric capacity C4 one end with the resistance R6
Other end connection, the other end of the resistance R7 connects the negative input end of the comparator U1B, the one of the potentiometer RP2
The positive input that termination power -5V, the potentiometer RP2 adjustable side are connected afterwards with the comparator U1B with electric capacity C5 one end
End connection, the potentiometer RP2 is grounded after being connected with the electric capacity C5 other end, output end and the electricity of the comparator U1B
R8 one end, diode D2 positive pole connection is hindered, the negative pole of the diode D2 connects the resistance R9, and the resistance R8's is another
One end is connected with one end of the electric capacity C6, light emitting diode L2 positive pole, the other end, the light emitting diode L2 of the electric capacity C6
Negative pole be connected after be grounded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710320352.9A CN107132502A (en) | 2017-05-09 | 2017-05-09 | A kind of RS485 communication test devices of electric energy meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710320352.9A CN107132502A (en) | 2017-05-09 | 2017-05-09 | A kind of RS485 communication test devices of electric energy meter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107132502A true CN107132502A (en) | 2017-09-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710320352.9A Pending CN107132502A (en) | 2017-05-09 | 2017-05-09 | A kind of RS485 communication test devices of electric energy meter |
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| CN (1) | CN107132502A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108110744A (en) * | 2017-12-25 | 2018-06-01 | 国网山东省电力公司滨州供电公司 | A kind of parallel connection Wiring type electric energy meter connection lightning protection device |
| CN108470193A (en) * | 2018-03-27 | 2018-08-31 | 国网河北省电力有限公司电力科学研究院 | Electrical energy meter fault diagnostic method, system and terminal device |
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| US20080174341A1 (en) * | 2007-01-24 | 2008-07-24 | Matsushita Electric Industrial Co., Ltd. | Analog voltage latch |
| CN103631690A (en) * | 2013-11-21 | 2014-03-12 | 广东电网公司电力科学研究院 | Electric power collecting and copying device RS485 interface handheld type tester and testing method thereof |
| CN203595768U (en) * | 2013-12-12 | 2014-05-14 | 惠州中城电子科技有限公司 | Electric power terminal interface self-checking apparatus |
| CN203935183U (en) * | 2014-05-04 | 2014-11-12 | 山东中医药大学 | A kind of for leading of electrocardiograph monitoring device come off detect dress |
| CN204679622U (en) * | 2015-04-20 | 2015-09-30 | 国家电网公司 | With the three-phase intelligent electric-energy meter communication interface load capacity proving installation of communication module |
| CN205229445U (en) * | 2015-11-23 | 2016-05-11 | 华立科技股份有限公司 | Electric energy meter RS485 communication interface comprehensive properties test module |
| CN206133545U (en) * | 2016-08-18 | 2017-04-26 | 四川灵通电讯有限公司 | Device that detect is carried out access state of RS232 interface |
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2017
- 2017-05-09 CN CN201710320352.9A patent/CN107132502A/en active Pending
Patent Citations (7)
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|---|---|---|---|---|
| US20080174341A1 (en) * | 2007-01-24 | 2008-07-24 | Matsushita Electric Industrial Co., Ltd. | Analog voltage latch |
| CN103631690A (en) * | 2013-11-21 | 2014-03-12 | 广东电网公司电力科学研究院 | Electric power collecting and copying device RS485 interface handheld type tester and testing method thereof |
| CN203595768U (en) * | 2013-12-12 | 2014-05-14 | 惠州中城电子科技有限公司 | Electric power terminal interface self-checking apparatus |
| CN203935183U (en) * | 2014-05-04 | 2014-11-12 | 山东中医药大学 | A kind of for leading of electrocardiograph monitoring device come off detect dress |
| CN204679622U (en) * | 2015-04-20 | 2015-09-30 | 国家电网公司 | With the three-phase intelligent electric-energy meter communication interface load capacity proving installation of communication module |
| CN205229445U (en) * | 2015-11-23 | 2016-05-11 | 华立科技股份有限公司 | Electric energy meter RS485 communication interface comprehensive properties test module |
| CN206133545U (en) * | 2016-08-18 | 2017-04-26 | 四川灵通电讯有限公司 | Device that detect is carried out access state of RS232 interface |
Non-Patent Citations (1)
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| 赵永辉: "电能表RS485通信压力测试方法与应用研究", 《中国新技术新产品》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108110744A (en) * | 2017-12-25 | 2018-06-01 | 国网山东省电力公司滨州供电公司 | A kind of parallel connection Wiring type electric energy meter connection lightning protection device |
| CN108470193A (en) * | 2018-03-27 | 2018-08-31 | 国网河北省电力有限公司电力科学研究院 | Electrical energy meter fault diagnostic method, system and terminal device |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170905 |
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| RJ01 | Rejection of invention patent application after publication |