CN208297648U - A kind of ground line detection alarm system - Google Patents
A kind of ground line detection alarm system Download PDFInfo
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- CN208297648U CN208297648U CN201820817368.0U CN201820817368U CN208297648U CN 208297648 U CN208297648 U CN 208297648U CN 201820817368 U CN201820817368 U CN 201820817368U CN 208297648 U CN208297648 U CN 208297648U
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Abstract
The utility model relates to equipment safety technique for using electricity fields, specifically disclose a kind of ground line detection alarm system, equipped with detection alarm module and the ground line circuit being connected between the detection alarm module and assembly line ground wire, equipment ground wire, the photoelectric coupling sub-circuit being connected between the detection alarm module and the assembly line ground wire, the equipment ground wire, and the power ground being connected on the assembly line ground wire and the equipment ground wire are equipped in the ground line circuit.A kind of ground line provided by the utility model detects alarm system, existing detection ground wire is combined into one with detection line, second resistance is connected between equipment ground wire and the negative pole end of power supply again, when power ground or detection line disconnect, photoelectrical coupler can power off output high potential, and MCU exports fault-signal and stops test to upper PC pop-up alert box.
Description
Technical field
The utility model relates to equipment safety technique for using electricity fields more particularly to a kind of ground line to detect alarm system.
Background technique
Currently, grounding alarm equipment used in production scene, which needs particularly to increase by two conducting wires, forms closed loop, report
Alert principle is: when there is a conducting wire to loosen, monolithic slave computer MCU (micro-control unit) detecting signal is (i.e. personal to PC host computer
Computer) it pops up alert box and stops testing.The shortcoming of this kind of mode is increased two conducting wires and assembly line ground wire phase
Even, the power ground of equipment itself is ignored namely whether the connection of the power ground of equipment itself does not well have warning function
It influences.
As shown in Figure of description 1, existing detection circuit is equipped with two-conductor line detection ground wire and detection line, independent by applying
Power supply E, resistance R, photoelectrical coupler U, assembly line ground wire are formed and closed loop, and photoelectrical coupler U obtains electricity output low potential, under monolithic
Position machine MCU exports normal signal and carries out proper testing to PC host computer.When detecting ground wire disconnection, photoelectrical coupler U power-off is defeated
High potential out, monolithic slave computer MCU export fault-signal and stop test to PC host computer pop-up alert box.In detection ground wire connection
Under the premise of intact, power ground does not influence the output of photoelectrical coupler whether disconnection, to the signal detection of MCU host computer
Also it does not influence.
Summary of the invention
The technical issues of the utility model provides a kind of ground line detection alarm system, solution is the ground connection of existing equipment
Warning circuit particularly increases the type of alarm that two conducting wires form closed loop, and whether the power ground connection of equipment itself is good right
Its warning function does not influence.
In order to solve the above technical problems, the utility model provides a kind of ground line detection alarm system, is equipped with detection alarm
Module and the ground line circuit being connected between the detection alarm module and assembly line ground wire, equipment ground wire, the ground line
Photoelectric coupling being connected between the detection alarm module and the assembly line ground wire, the equipment ground wire is equipped in circuit
Circuit, and the power ground being connected on the assembly line ground wire and the equipment ground wire.
Specifically, the photoelectric coupling sub-circuit is equipped with power supply, first resistor, second resistance, photoelectrical coupler, the light
The diode cathode end of electric coupler connects the equipment ground wire, and diode cathode end connects the positive terminal of the power supply, described
The assembly line ground wire is connected after first resistor described in the negative pole end of power supply；Described second resistance one end is with connecting the equipment
Line, the other end connect the negative pole end of the power supply；The transistor collector end of the photoelectrical coupler connects the detection alarm
The signal acquisition terminal of module, transistor emitter end ground connection.
The PC host computer that the detection alarm module is equipped with monolithic slave computer and connect with the monolithic slave computer；The letter
Number collection terminal is connected as the I/O mouth of the monolithic slave computer.
A kind of ground line provided by the utility model detects alarm system, and existing detection ground wire is closed two with detection line and is
One, then second resistance is connected between equipment ground wire and the negative pole end of power supply, when power ground or detection line disconnection, photoelectricity coupling
Clutch can power off output high potential, and MCU exports fault-signal and stops test to upper PC pop-up alert box, which not only may be used
To guarantee power ground reliable ground, moreover it is possible to electrostatic is served using first resistor and is released, and eliminates a piece-root grafting ground wire,
Material processing and fabricating cost is saved, the overall aesthetic of equipment is additionally favorable for.
Detailed description of the invention
Fig. 1 is the circuit diagram of existing detection warning circuit provided by the embodiment of the utility model；
Fig. 2 is a kind of function structure chart of ground line detection alarm system provided by the embodiment of the utility model；
Fig. 3 is the circuit diagram of Fig. 1 embodiment provided by the utility model.
Specific embodiment
The embodiments of the present invention is specifically illustrated with reference to the accompanying drawing, and embodiment is only given in order to illustrate mesh
, it can not be interpreted as the restriction to the utility model, type selecting and value size and attached drawing including component are only preferably real
Apply example, it is only for reference and illustrate use, the limitation to the utility model patent protection scope is not constituted, because not departing from this reality
On the basis of novel spirit and scope, many changes can be carried out to the utility model.
A kind of function structure chart for ground line detection alarm system that utility model embodiment provides, as shown in Figure 2.At this
In embodiment, a kind of ground line detects alarm system, equipped with detection alarm module 1 and is connected to the detection alarm mould
Ground line circuit 2 between block 1 and assembly line ground wire, equipment ground wire (shell) is equipped in the ground line circuit 2 and is connected to
Photoelectric coupling sub-circuit 21 between the detection alarm module 1 and the assembly line ground wire, the equipment ground wire, and connection
Power ground 22 on the assembly line ground wire and the equipment ground wire.
It is the circuit diagram of Fig. 1 embodiment provided by the utility model referring to Fig. 3.The photoelectric coupling sub-circuit 21
Equipped with power supply E1, first resistor R1, second resistance R2, photoelectrical coupler U1, the diode cathode end of the photoelectrical coupler U1
U1_PIN1 (PIN represents pin, followed by pin numbering, similarly hereinafter) the connection equipment ground wire, diode cathode end U1_
PIN2 connects the positive terminal of the power supply E1, after first resistor R1 described in the negative pole end of the power supply E1 with connecting the assembly line
Line；The one end the second resistance R2 connects the equipment ground wire, and the other end connects the negative pole end of the power supply E1；The photoelectricity coupling
The transistor collector end U1_PIN3 of clutch U1 connects the signal acquisition terminal 11 of the detection alarm module 1, transistor emitter
Hold U1_PIN4 ground connection.Wherein, the first resistor R1 to the conducting wire between the assembly line ground wire be detection line.
The detection alarm module 1 be equipped with monolithic slave computer 11 (i.e. MCU, micro-control unit) and with the monolithic slave computer
The PC host computer 12 of 11 connections；The signal acquisition terminal 11 is connected as the I/O mouth of the monolithic slave computer 11.
A kind of ground line provided by the embodiment of the utility model detects alarm system, by existing detection ground wire and detection line
Be combined into a detection line, then connect second resistance R2 between equipment ground wire and the negative pole end of power supply E1, when power ground 22 or
When detection line disconnects, photoelectrical coupler U1 can power off output high potential, and MCU exports fault-signal and pops up alert box to upper PC
Stop test, which can not only guarantee 22 reliable ground of power ground, moreover it is possible to rise and release to electrostatic using first resistor R1
Effect, and a piece-root grafting ground wire is eliminated, material processing and fabricating cost is saved, the overall aesthetic of equipment is additionally favorable for.
Above-described embodiment is the preferable embodiment of the utility model, but the embodiments of the present invention is not by above-mentioned
The limitation of embodiment, it is made under other any spiritual essence and principles without departing from the utility model to change, modify, replacing
In generation, simplifies combination, should be equivalent substitute mode, is included within the protection scope of the utility model.
Claims (3)
1. a kind of ground line detects alarm system, equipped with detection alarm module and it is connected to the detection alarm module and assembly line
Ground line circuit between ground wire, equipment ground wire, which is characterized in that be equipped in the ground line circuit and be connected to the detection report
Photoelectric coupling sub-circuit between alert module and the assembly line ground wire, the equipment ground wire, and it is connected to the assembly line
Power ground on ground wire and the equipment ground wire.
2. a kind of ground line as described in claim 1 detects alarm system, it is characterised in that: the photoelectric coupling sub-circuit is set
There are power supply, first resistor, second resistance, photoelectrical coupler, the diode cathode end of the photoelectrical coupler connects the equipment
Ground wire, diode cathode end connects the positive terminal of the power supply, after first resistor described in the negative pole end of the power supply described in connection
Assembly line ground wire；Described second resistance one end connects the equipment ground wire, and the other end connects the negative pole end of the power supply；The light
The transistor collector end of electric coupler connects the signal acquisition terminal of the detection alarm module, transistor emitter end ground connection.
3. a kind of ground line as claimed in claim 2 detects alarm system, it is characterised in that: the detection alarm module is equipped with
Monolithic slave computer and the PC host computer being connect with the monolithic slave computer；The signal acquisition terminal is connected as the monolithic slave computer
I/O mouth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820817368.0U CN208297648U (en) | 2018-05-29 | 2018-05-29 | A kind of ground line detection alarm system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820817368.0U CN208297648U (en) | 2018-05-29 | 2018-05-29 | A kind of ground line detection alarm system |
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| Publication Number | Publication Date |
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| CN208297648U true CN208297648U (en) | 2018-12-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201820817368.0U Active CN208297648U (en) | 2018-05-29 | 2018-05-29 | A kind of ground line detection alarm system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111157914A (en) * | 2019-12-26 | 2020-05-15 | 通富微电子股份有限公司 | Anti-static grounding wire monitoring device and integrated circuit testing system |
| CN111665454A (en) * | 2019-03-05 | 2020-09-15 | 深圳长城开发科技股份有限公司 | Data acquisition terminal equipment grounding detection equipment and working method thereof |
-
2018
- 2018-05-29 CN CN201820817368.0U patent/CN208297648U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111665454A (en) * | 2019-03-05 | 2020-09-15 | 深圳长城开发科技股份有限公司 | Data acquisition terminal equipment grounding detection equipment and working method thereof |
| CN111157914A (en) * | 2019-12-26 | 2020-05-15 | 通富微电子股份有限公司 | Anti-static grounding wire monitoring device and integrated circuit testing system |
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