CN210270123U - Ground wire monitoring device and EOS monitoring system - Google Patents
Ground wire monitoring device and EOS monitoring system Download PDFInfo
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- CN210270123U CN210270123U CN201920663205.6U CN201920663205U CN210270123U CN 210270123 U CN210270123 U CN 210270123U CN 201920663205 U CN201920663205 U CN 201920663205U CN 210270123 U CN210270123 U CN 210270123U
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Abstract
The embodiment of the utility model discloses an earth connection monitoring devices, EOS monitoring system includes external electrical equipment, alternating-current charging stake, external equipment ground stake and earth connection monitoring devices, the external equipment ground stake is connected electrically the earth connection monitoring devices through first earth wire; the alternating current charging pile is electrically connected with the grounding wire monitoring device through a second grounding wire; the external electrical equipment is electrically connected with the grounding wire monitoring device through a third grounding wire; the ground wire monitoring device sends a detection signal, the detection signal sequentially passes through the first ground wire, the second ground wire and the third ground wire and then returns to the ground wire monitoring device to form a loop, and the ground wire monitoring device automatically alarms when judging that the detection signal does not return through the loop. The line can be automatically detected and automatically alarmed in real time without manual regular line inspection, so that the labor and maintenance cost are greatly saved, and the problem of poor inspection effectiveness caused by manual operation in the conventional EOS detection is solved.
Description
Technical Field
The utility model relates to an electrical equipment technical field especially relates to an earth connection monitoring devices, EOS monitoring system.
Background
Currently, in the field of manufacturing, especially in the electronic device manufacturing industry, the problem of damage to products by EOS (Electrical OverStress) is first faced. External electrical equipment (such as a display) at a factory or a laboratory is often susceptible to electric leakage under various environmental influences (equipment aging, electronic components being affected with moisture, etc.). The main reason for the EOS is the leakage of the external electrical equipment, and the source of the electrical leakage (EOS) is that the shell does not contact the ground well. If external electrical equipment is put in a certain place all the time and is motionless, the probability of EOS can be very little, but because of the product kind is too much in the reality, different external electrical equipment often need to be changed, and the wire rod plug frequency is on the high side, the condition of ground wire contact failure appears easily.
In the prior art, a 'grounding wire' is used for connecting a shell with the ground so as to introduce leakage current into the ground, and whether the circuit is in good contact or not needs to be checked periodically and manually to prevent the leakage current.
The manual inspection (visual inspection and electric meter measurement) mode has many blind areas and uncertain factors (such as real-time performance, poor contact and the like), potential safety hazards are caused, the inspection effectiveness is poor, potential product quality hazards are caused, and the maintenance cost is increased; and the times of manually measuring the EOS are increased, and the labor cost is increased.
SUMMERY OF THE UTILITY MODEL
To the technical problem, the embodiment of the utility model provides an earth connection monitoring devices, EOS monitoring system to solve current EOS and detect the relatively poor problem that needs manual operation to lead to the inspection effectivity.
The embodiment of the utility model provides an earth connection monitoring devices, wherein, earth connection monitoring devices includes the casing, be provided with first plug, second plug, first interface and second interface on the casing;
the first plug is connected with an alternating current charging pile of an external power supply, and the second plug is connected with external electrical equipment;
the first interface is connected with an external equipment ground pile, and the second interface is connected with a ground wire of the external electrical equipment;
the ground wire monitoring device, the external equipment ground pile, the external electrical equipment and the alternating current charging pile of the external power supply form a grounding loop, and when the loop is disconnected, the ground wire monitoring device sends an alarm prompt.
Optionally, in the ground wire monitoring device, a circuit board is arranged in the housing, and a power supply module, a control module, a signal detection module and an alarm module are arranged on the circuit board;
the power supply module is connected with the external power supply and is used for converting external voltage into corresponding working voltage and respectively outputting the working voltage to the control module, the signal detection module and the alarm module;
the signal detection module is used for detecting whether the loop is disconnected or not, and sending out a leakage signal when the disconnection is detected;
the control module receives the electric leakage signal sent by the signal detection module and controls the alarm module to send out alarm prompt.
Optionally, in the ground wire monitoring device, a protection module is further disposed on the circuit board, and is configured to output an external voltage to the external electrical equipment for power supply, and disconnect a power connection of the external electrical equipment when receiving the leakage signal.
Optionally, in the ground wire monitoring device, the time when the protection module disconnects the power supply of the external electrical equipment is set, and when the time reaches a set threshold, the protection module disconnects the power supply of the external electrical equipment.
Optionally, in the ground wire monitoring device, the housing is further provided with a plurality of LED lamps and a plurality of switches;
the switch is connected with the signal detection module and is used for controlling whether the signal detection module detects the loop or not;
the LED lamp is connected with the alarm module and used for giving out light and giving an alarm when giving an alarm.
A second aspect of the embodiment of the present invention provides an EOS monitoring system for external electrical equipment, which includes the external electrical equipment, an ac charging pile, an external equipment ground pile and the ground wire monitoring device;
the extension socket is electrically connected with the external electrical equipment through an extension socket ground wire;
the external equipment ground pile is electrically connected with the ground wire monitoring device through a first ground wire;
the alternating current charging pile is electrically connected with the grounding wire monitoring device through a second grounding wire;
the external electrical equipment is electrically connected with the grounding wire monitoring device through a third grounding wire;
the ground wire monitoring device sends a detection signal, the detection signal sequentially passes through the first ground wire, the second ground wire and the third ground wire and then returns to the ground wire monitoring device to form a loop, and the ground wire monitoring device automatically alarms when judging that the detection signal does not return through the loop.
In the technical scheme provided by the embodiment of the utility model, the EOS monitoring system comprises external electrical equipment, an alternating current charging pile, an external equipment ground pile and a ground wire monitoring device, wherein the external equipment ground pile is electrically connected with the ground wire monitoring device through a first ground wire; the alternating current charging pile is electrically connected with the grounding wire monitoring device through a second grounding wire; the external electrical equipment is electrically connected with the grounding wire monitoring device through a third grounding wire; the ground wire monitoring device sends a detection signal, the detection signal sequentially passes through the first ground wire, the second ground wire and the third ground wire and then returns to the ground wire monitoring device to form a loop, and the ground wire monitoring device automatically alarms when judging that the detection signal does not return through the loop. Therefore, real-time automatic detection and automatic alarm can be realized without manually and regularly checking the circuit, manual operation is cancelled, manpower and maintenance cost are greatly saved, and the problem that the checking effectiveness is poor due to manual operation required by the conventional EOS detection is solved.
Drawings
Fig. 1 is a schematic structural diagram of an EOS monitoring system in an embodiment of the present invention.
Fig. 2 is a schematic view of a housing of the ground wire monitoring device in the embodiment of the present invention.
Fig. 3 is a circuit diagram of the ground wire monitoring device according to the embodiment of the present invention.
Fig. 4 is a flowchart of an EOS monitoring method of the EOS monitoring system in the embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. The embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative efforts, belong to the protection scope of the present invention.
Referring to fig. 1 and fig. 2, an earth wire monitoring device 10 according to an embodiment of the present invention includes a housing 110, wherein the housing 110 is provided with a first plug 150, a second plug 170, a first interface 180, and a second interface 120; the first plug 150 is connected with an alternating current charging pile of an external power supply, and the second plug 170 is connected with external electrical equipment; the first interface 180 is connected with an external device ground pile, and the second interface 120 is connected with a ground wire of the external electrical device; the ground wire monitoring device 10, the external device ground pile, the external electrical device, and the external power supply alternating current charging pile form a grounding loop (that is, from the first interface 180 of the ground wire monitoring device 10, the grounding loops sequentially return to the ground wire monitoring device 10 along the external device ground pile, the external power supply alternating current charging pile, the first plug 150, the second plug 170, the external electrical device, and the ground wire of the external electrical device until the second interface 120, and when the loop is disconnected, the ground wire monitoring device 10 sends an alarm prompt. In a specific implementation, a plurality of second interfaces 120 (as shown in fig. 2, 6 second interfaces are arranged on the top of the housing side by side) may be provided, so that a plurality of external electrical devices can be monitored simultaneously.
The embodiment of the utility model provides an EOS monitoring system of external electrical equipment includes earth connection monitoring devices 10, external electrical equipment, alternating-current charging stake (AC ground stake) and external equipment ground stake; the ground wire monitoring device 10 is connected with external electrical equipment, and in specific implementation, the ground wire monitoring device 10 is connected with a plurality of external electrical equipment through the extension socket 20, that is, the second plug 170 of the ground wire monitoring device 10 is connected with the extension socket 20, and the extension socket 20 is electrically connected with the external electrical equipment through an extension socket ground wire. The external device ground pile is electrically connected with a first interface 180 of the ground wire monitoring device 10 through a first ground wire 101, the alternating current charging pile is electrically connected with a first plug 150 of the ground wire monitoring device 10 through a second ground wire 102, and each external electrical device is electrically connected with a corresponding second interface 120 of the ground wire monitoring device 10 through a third ground wire 103. When the ground wire monitoring device 10 works, a signal sending end (namely the first interface 180) outputs a detection signal, the detection signal sequentially passes through the first ground wire, an external device ground pile (such as a ground wire led out from a ground hole in a wall socket and forms a loop through the ground wire), the alternating current charging pile (such as the ground hole in the wall socket), the second ground wire (such as a common three-prong power wire), the ground wire of the first plug 150, the ground wire of the second plug 170, the row-plug ground wire of the row-plug 20 (3-pin row-plug), and a signal receiving end (namely the second interface 120) of the ground wire monitoring device 10 is returned after the third ground wire, so that a loop is formed. If any point in the loop is disconnected, the ground wire monitoring device 10 cannot receive the returned detection signal, and the ground wire monitoring device 10 automatically alarms when judging that the detection signal does not return through the loop. Therefore, real-time automatic detection and automatic alarm can be realized without manually checking the circuit regularly, manual operation is cancelled, manpower and maintenance cost are greatly saved, and life safety is guaranteed.
In this embodiment, as shown in fig. 3, a circuit board is disposed in a housing 110 of the ground wire monitoring device 10, and the circuit board is provided with a power supply module 31, a control module 32, a signal detection module 33, and an alarm module 34; the power supply module 31 is connected to the external power supply, and converts an external voltage of 220V into corresponding working voltages (5V and 12V) to be respectively output to the control module 32, the signal detection module 33 and the alarm module 34 for power supply. The signal detection module 33 is configured to detect whether the grounded loop is disconnected, and when disconnection is detected, send out a leakage signal, specifically: the signal detection module 35 sends a detection signal and determines whether the detection signal returns along a grounded loop, and if not, outputs a leakage signal (e.g., low level); and when the detection signal returns, the operation is not carried out. The control module 32 controls the alarm module 34 to issue an alarm prompt (e.g., a sound alarm) according to the received leakage signal, so as to prompt the user that the current device is in a leakage state and needs to be immediately processed. If the detection signal returns, the control module 32 does not operate.
In a further embodiment, the circuit board is further provided with a protection module 35, and the protection module 35 is connected to the external power supply and is configured to output an external voltage to the external electrical equipment for supplying power. The protection module 35 receives the leakage signal sent by the signal detection module, and disconnects the power connection of the external electrical equipment according to the leakage signal.
In a further embodiment, the circuit board is further provided with a delay module 36, which is used for setting the time when the protection module disconnects the power supply of the external electrical equipment, and when the time reaches a set threshold, the protection module disconnects the power supply of the external electrical equipment. The threshold is used for providing time for a user to process problems, for example, in the alarm process, the user can immediately connect the wire after finding the problems; or the user shuts down the existing machine to prevent the illegal power failure of the product in use, so as to play a certain role in protecting the external electrical equipment. The ground wire monitoring device 10 may further have a power-off protection function, and after the detection time of the protection module 35 reaches the set threshold, the output of the external voltage of 220V is cut off, so that the external electrical equipment is powered off and cannot work, thereby effectively protecting the product.
In a specific implementation, the first plug 150 of the ground wire monitoring device 10 is connected to a wall socket through a power cord, and the power cord of the extension socket 20 is inserted into the ground wire monitoring device 10 for connection. The number of the external electrical devices 30 may be 1 or several, and each of the external electrical devices (1 to n, n is a natural number) is inserted into the extension socket 20 (on which a plurality of jacks are provided) through a corresponding power line. Each external electrical device is connected to the corresponding second interface 120 through a data line. The ground wire monitoring device 10 connects the AC ground (i.e., the AC charging post of the external power supply) directly to the extension socket ground of the extension socket 20.
In this embodiment, for example, 6 external electrical devices can be monitored simultaneously, and then 6 second interfaces 120 and 6 LED lamps 130 are correspondingly provided, where each LED lamp corresponds to 1 external electrical device. The alarm mode comprises a buzzer in the alarm module 33 for sounding alarm and a light-emitting alarm of the LED control module 35, and the buzzer and the LED control module give an alarm at the same time.
Referring to fig. 2, in a further embodiment, the housing is further provided with a plurality of LED lamps 130 and a plurality of switches 140, and the plurality of switches 140 are respectively and correspondingly disposed below one LED lamp. The switches 140 are connected to the signal detection module 33 and the corresponding second interface, and the switches 140 are used to control whether the signal detection module detects the loop. In specific implementation, the switch outputs an on signal or an off signal according to a user operation, the signal detection module 33 detects whether a loop of the second interface corresponding to the on signal is disconnected when receiving the on signal, and the signal detection module 33 does not detect a loop of the second interface corresponding to the off signal when receiving the off signal. For example, when only one external electrical device is connected, the switch corresponding to the external electrical device may be turned on, and an on signal may be output to the signal detection module 33; other switches are closed and output off signals, the signal detection module 33 only detects whether the loop receiving the open signal is disconnected or not, and does not detect the loop receiving the off signal.
The LED lamp is connected with the alarm module and used for giving out light and giving an alarm when giving an alarm. The LED lamp 130 is a two-color LED lamp, and when the ground line of the circuit is good, the LED lamp of the corresponding circuit lights up to emit blue light. When the single external electrical equipment is not well contacted, the LED lamp of the corresponding loop is bright red. Contains 3 segments in common: the device comprises an AC ground-to-ground wire monitoring device, a device ground-to-ground wire monitoring device and a power strip, wherein the AC ground-to-ground wire monitoring device, the device ground-to-ground wire monitoring device and the power strip are plugged into the ground wire monitoring device; the ground of these 3 parts is common, and if the common ground is not well contacted (such as wall ground hole, equipment ground, row socket ground), all the LED lamps are red. However, the ground between the external electrical equipment (such as a display) and the ground wire monitoring device is independent, which partially causes problems, and only proves that a single display is not connected well, only the LED lamp on the loop of the display is red, and other LED lamps are normally blue.
In a further embodiment, a plurality of wire clamping grooves 160 can be arranged at the top edge of the shell 110 side by side, each wire clamping groove is aligned with the corresponding second interface, and the data wire connected with the second interface is clamped through the wire clamping grooves 160, so that the influence of looseness of the data wire on the monitoring result is avoided.
Based on the EOS monitoring system of above-mentioned external electrical equipment, the utility model discloses still provide an EOS monitoring method of EOS monitoring system, please refer to fig. 4, EOS monitoring method includes:
s10, sending a detection signal through a ground wire monitoring device, and returning the detection signal to the ground wire monitoring device after passing through the first ground wire, the second ground wire and the third ground wire in sequence to form a loop;
and S20, the grounding wire monitoring device automatically alarms when judging that the detection signal does not return through the loop.
Wherein, the step S10 specifically includes:
and 120, sending a detection signal through the signal detection module, wherein the detection signal sequentially passes through the first ground wire, the second ground wire and the third ground wire and then returns to the ground wire monitoring device to form a loop.
During operation, if any point in the loop is broken, an alarm can be given through step S20. The step S20 specifically includes:
step 210, the signal detection module determines whether the detection signal returns, if not, step 220 is executed, and if so, step 230 is executed;
step 220, controlling the LED lamp of the corresponding loop to emit red light for prompting, and outputting a leakage signal to a control module of the ground wire monitoring device, wherein the control module judges that the current state is abnormal according to the leakage signal, and controls the alarm module to emit an alarm prompt;
in this step, the signal detection module outputs a light-up signal corresponding to the loop to the control module, and the control module controls the LED lamp of the loop to emit red light according to the light-up signal.
And step 230, controlling the LED lamp of the corresponding loop to emit blue light for prompting, and continuously sending the detection signal.
In this step, the signal detection module outputs a light-out signal corresponding to the loop to the control module and continues to send a detection signal, and the control module controls the LED lamp of the loop to emit blue light according to the light-out signal.
In order to protect the external electrical equipment, after the step 220, the method further includes:
step 221, the delay module starts timing when alarming;
step 222, after the protection module detects that the timing of the delay module reaches a set threshold, disconnecting the power supply of the external electrical equipment;
and 223, judging whether the reason is found and reconnecting the wire by the control module, if so, continuing to send a detection signal by the LED control module.
To sum up, the utility model provides an earth connection monitoring devices, EOS monitoring system, start from the source, utilize the loop test principle real-time supervision power ground wire whether contact well to provide the warning when any point in the return circuit breaks off, still cut off commercial power output when the alarm time reaches the setting value in order to protect external electrical equipment, stop the potential safety hazard that EOS brought; the automatic monitoring mode is adopted to replace the existing manual operation, the manual operation is cancelled, the product repair rate is reduced, the product quality is improved, the labor and the maintenance cost are saved, and the life safety is guaranteed. The cost is low, the omnibearing detection without dead angles can be realized, the universality is high, and the application range is wide.
The above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.
Claims (6)
1. The ground wire monitoring device is characterized by comprising a shell, wherein a first plug, a second plug, a first interface and a second interface are arranged on the shell;
the first plug is connected with an alternating current charging pile of an external power supply, and the second plug is connected with external electrical equipment;
the first interface is connected with an external equipment ground pile, and the second interface is connected with a ground wire of the external electrical equipment;
the ground wire monitoring device, the external equipment ground pile, the external electrical equipment and the alternating current charging pile of the external power supply form a grounding loop, and when the loop is disconnected, the ground wire monitoring device sends an alarm prompt.
2. The grounding wire monitoring device as claimed in claim 1, wherein a circuit board is disposed in the housing, and a power supply module, a control module, a signal detection module and an alarm module are disposed on the circuit board;
the power supply module is connected with the external power supply and is used for converting external voltage into corresponding working voltage and respectively outputting the working voltage to the control module, the signal detection module and the alarm module;
the signal detection module is used for detecting whether the loop is disconnected or not, and sending out a leakage signal when the disconnection is detected;
the control module receives the electric leakage signal sent by the signal detection module and controls the alarm module to send out alarm prompt.
3. The grounding wire monitoring device as claimed in claim 2, wherein the circuit board is further provided with a protection module for outputting an external voltage to the external electrical equipment for power supply, and disconnecting the power supply connection of the external electrical equipment when receiving the leakage signal.
4. The grounding wire monitoring device as claimed in claim 3, wherein a delay module is further disposed on the circuit board for setting a time for the protection module to disconnect the power supply of the external electrical equipment, and when the time reaches a set threshold, the protection module disconnects the power supply of the external electrical equipment.
5. The grounding wire monitoring device as claimed in claim 2, wherein the housing further comprises a plurality of LED lamps and a plurality of switches;
the switch is connected with the signal detection module and is used for controlling whether the signal detection module detects the loop or not;
the LED lamp is connected with the alarm module and used for giving out light and giving an alarm when giving an alarm.
6. An EOS monitoring system of an external electrical device, which is characterized by comprising the external electrical device, an alternating current charging pile, an external device ground pile and the grounding wire monitoring device as claimed in any one of claims 1 to 5;
the external equipment ground pile is electrically connected with the ground wire monitoring device through a first ground wire;
the alternating current charging pile is electrically connected with the grounding wire monitoring device through a second grounding wire;
the external electrical equipment is electrically connected with the grounding wire monitoring device through a third grounding wire;
the ground wire monitoring device sends a detection signal, the detection signal sequentially passes through the first ground wire, the second ground wire and the third ground wire and then returns to the ground wire monitoring device to form a loop, and the ground wire monitoring device automatically alarms when judging that the detection signal does not return through the loop.
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| CN201920663205.6U CN210270123U (en) | 2019-05-10 | 2019-05-10 | Ground wire monitoring device and EOS monitoring system |
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| CN201920663205.6U CN210270123U (en) | 2019-05-10 | 2019-05-10 | Ground wire monitoring device and EOS monitoring system |
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| CN210270123U true CN210270123U (en) | 2020-04-07 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110146769A (en) * | 2019-05-10 | 2019-08-20 | 深圳微步信息股份有限公司 | A kind of grounding wire monitoring device, EOS monitor system and method |
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- 2019-05-10 CN CN201920663205.6U patent/CN210270123U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110146769A (en) * | 2019-05-10 | 2019-08-20 | 深圳微步信息股份有限公司 | A kind of grounding wire monitoring device, EOS monitor system and method |
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