CN105372481A - Step voltage monitor - Google Patents
Step voltage monitor Download PDFInfo
- Publication number
- CN105372481A CN105372481A CN201510890744.XA CN201510890744A CN105372481A CN 105372481 A CN105372481 A CN 105372481A CN 201510890744 A CN201510890744 A CN 201510890744A CN 105372481 A CN105372481 A CN 105372481A
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- China
- Prior art keywords
- voltage
- unit
- monitor
- short
- electric shock
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/165—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values
- G01R19/16504—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values characterised by the components employed
- G01R19/16523—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values characterised by the components employed using diodes, e.g. Zener diodes
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/10—Measuring sum, difference or ratio
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Measurement Of Current Or Voltage (AREA)
- Emergency Alarm Devices (AREA)
Abstract
The invention discloses a step voltage monitor. The step voltage monitor comprises a voltage determining unit, and a voltage acquisition unit, an acousto-optic warning unit, a display unit, an electric shock alarm unit, a short-circuit protection unit and a power supply unit which are connected with the voltage determining unit. The voltage acquisition unit is used for acquiring voltage values of ground which work personnel step on by their two feet, and at the same time, after preliminary processing of the voltage values, sending the voltage values to the voltage determining unit. The voltage determining unit, after analyzing and determining, respectively controls the acousto-optic warning unit acousto-optic warning unit, the display unit, the electric shock alarm unit and the short-circuit protection unit to execute corresponding motion. The power supply unit respectively provides proper voltages for each power consumption unit of the step voltage monitor. The step voltage monitor of such a structure can realize effective monitoring of step voltages so as to prevent possibly caused personal damage.
Description
Technical field
The present invention relates to step voltage monitor, belong to voltage monitoring field.
Background technology
As everyone knows, during electrical equipment generation earth fault, can produce step voltage and touch voltage near earth point, this brings very large security risk to the operations staff of direct looking up the fault and circuit track walker.Especially when trouble spot occurs in switch gear room in electric substation, be all-sealed structure due to switchboard assembly thus blocked earth point, person on duty is actual only can carry out preliminary fuzzy Judgment by means of being charred smell, the electric discharge sound etc., very likely enters equipment near step voltage district or contact earth point by mistake thus cause accident of human electric shock when searching.
In view of this, the present inventor studies this, and develop a kind of step voltage monitor specially, this case produces thus.
Summary of the invention
The object of this invention is to provide a kind of step voltage monitor, realize the effective monitoring to step voltage, and then avoid its personal injury that may cause.
To achieve these goals, solution of the present invention is:
Step voltage monitor, comprises voltage judging unit, and the voltage acquisition unit, acousto-optic warning unit, display unit, electric shock alarm unit, short-circuit protection unit and the power supply unit that are connected with voltage judging unit; Described voltage acquisition unit be used for collecting work personnel bipod step on the magnitude of voltage at ground place; send to voltage judging unit by after magnitude of voltage rough handling simultaneously; the analysis of voltage judging unit controls acousto-optic warning unit respectively after judging, display unit, electric shock alarm unit, short-circuit protection unit perform corresponding action, and power supply unit is respectively each power unit of step voltage monitor and provides suitable voltage.
As preferably, described voltage acquisition unit comprises the sheet metal be arranged at the bottom of staff's insulated shoes, and voltage collection circuit, voltage collection circuit input end connects voltage table, the voltage signal sensed is fed back to voltage collection circuit by lead-in wire by sheet metal, and voltage signal is sent to voltage judging unit by voltage collection circuit after treatment.
As preferably, described sheet metal comprises main sheet metal and the assistant metal sheet of series connection mutually, many sheet metals to arrange the voltage data that can make to collect more reliable, precisely.
As preferably, described voltage judging unit adopts Single-chip Controlling.The voltage difference that voltage acquisition unit gathers by voltage judging unit compares fast with the alarm setting value preset and short circuit definite value, thus determines the action of step voltage monitor, is the heart of whole monitor.Model specifically can be adopted to be the single-chip microcomputer of ATMEGA128.
As preferably, described acousto-optic warning unit adopts light emitting diode and loudspeaker, when there is step voltage, sending sound and light alarm signal and noting to point out staff.In the present embodiment, acoustical signal should comprise two kinds, the alerting signal of " ticking " and the cue of escaping danger of " asking Dan Jiaoanyuan road to jump out ground area "; Light signal adopts the longest ruddiness of wavelength, and brightness is sufficient, and flicker is quick, make person on duty when night or more noisy also can arouse attention, light emitting diode is arranged on the full position of monitor, and can arrange multiple.In addition, sound and light signal all should along with the rising of step voltage gradual change rapid, the acoustical signal of " ticking " and the flicker frequency of light signal should improve with the rising of voltage.
As preferably, described display unit adopts LCDs, for showing every data and the state of step voltage monitor.In the present embodiment, described display unit specifically adopts TFT color LCD screen.
As preferably, described electric shock alarm unit comprises and is arranged on pressure transducer at the bottom of insulated shoes and wireless communication module, after the unfortunate electric shock of staff falls down to the ground, the electric shock alarm unit energy very first time sends wireless communication signal notice master-control room personnel and rescues electric shock staff.
As preferably; described short-circuit protection unit comprises interconnective triode, protective relay and short-circuit conductors; short-circuit protection unit is connected with the voltage acquisition unit of bipod; when voltage difference exceedes limit value; by short-circuit conductors short circuit voltage table; make equipotential between staff's bipod, thus eliminate step voltage impact.
As preferably, described power supply unit comprises battery, and the voltage processing circuitry to be connected with battery, described battery adopts rechargeable battery, voltage processing circuitry adopts model to be the step-down controller of MP1584EN, and cell voltage is respectively each power unit and powers after voltage processing circuitry step-down filtering.
Its sheet metal of step voltage monitor of said structure, pressure transducer are arranged on foot, remainder hangs over loins, specific works principle: the sheet metal of foot is connected with the remaining element of loins by lead-in wire, in the process of staff's walking, by the sheet metal stepping down in vola obtain bipod step on the magnitude of voltage at ground place, and judge the voltage difference between bipod by the voltage table of step voltage monitor inside and voltage judging unit.Under normal circumstances or when not entering in ground area, between bipod, voltage difference is zero, and acousto-optic warning unit is without display; When there is earth fault and staff has entered ground area, voltage difference will be produced between bipod, when this voltage difference exceedes alarm setting value (can be set as about 5V), acousto-optic warning unit can send obvious sound and light alarm signal, and prompting staff notes entering access area; When voltage difference exceed short circuit definite value (can be set as about 25V) that work the mischief is known from experience to people time, short-circuit protection unit short circuit voltage table, makes equipotential between bipod.Meanwhile, the sound and light signal of acousto-optic warning unit can be rapid with the rising gradual change of magnitude of voltage; After the unfortunate electric shock of person on duty falls down to the ground, step voltage detecting device can also send wireless communication module notice master-control room personnel the very first time and rescue.
Step voltage monitor of the present invention has multiple protection functions: during without step voltage, without sound and light signal; Step voltage value exceedes alarm setting value, sends sound and light alarm signal; Step voltage value exceedes short circuit definite value, sends sound and light alarm signal, starts short-circuit protection unit simultaneously; The unfortunate electric shock of staff falls down to the ground, and electric shock alarm unit can send wireless communication signal notice master-control room personnel the very first time and rescue.
Below in conjunction with drawings and the specific embodiments, the present invention is described in further detail.
Accompanying drawing explanation
Fig. 1 is the step voltage monitor block diagram of the present embodiment;
Fig. 2 is the step voltage monitor voltage judging unit of the present embodiment, voltage acquisition unit, acousto-optic warning unit and short-circuit protection element circuit figure.
Embodiment
As shown in Figure 1, step voltage monitor, comprises voltage judging unit 1, and the voltage acquisition unit 2, acousto-optic warning unit 3, display unit 4, electric shock alarm unit 5, short-circuit protection unit 6 and the power supply unit 7 that are connected with voltage judging unit 1; Voltage acquisition unit 1 for collecting work personnel bipod step on the magnitude of voltage at ground place; send to voltage judging unit 1 by after magnitude of voltage rough handling simultaneously; voltage judging unit 1 analysis controls acousto-optic warning unit 3 respectively after judging, display unit 4, electric shock alarm unit 5, short-circuit protection unit 6 perform corresponding action, and power supply unit 7 is respectively each power unit of step voltage monitor and provides suitable voltage.
As shown in Figure 2, described voltage acquisition unit 2 comprises the sheet metal be arranged at the bottom of staff's insulated shoes, and voltage collection circuit, voltage collection circuit input end connects voltage table and (omits voltage table in Fig. 2, lead-in wire DJD1, DJD2 connect voltage table) voltage signal sensed feeds back to voltage collection circuit by lead-in wire by sheet metal, and voltage signal is sent to voltage judging unit 1 by voltage collection circuit after the process such as rectifying and wave-filtering.For voltage acquisition unit 2, the sheet metal of sole is its functional realiey part, so higher to the requirement of its reliability and sensitivity: because people's custom heel when walking first lands, so main sheet metal should be arranged at foot rearward position to improve sensitivity, also should have assistant metal sheet in other positions in vola, be series relationship between each sheet metal; The contact on sheet metal and ground all should well and contact area is abundant under the situation of various road surfaces, and the setting of sheet metal should take the measure reducing sheet metal wearing and tearing in the process of walking, convenient disassembly, and replaceable.
Described voltage judging unit 1 adopts Single-chip Controlling, model specifically can be adopted to be the single-chip microcomputer of ATMEGA128, voltage judging unit by voltage acquisition unit 2 gather voltage differences compare fast with the alarm setting value preset and short circuit definite value, thus determine the action of step voltage monitor, be the heart of whole monitor.Voltage judging unit 1 described in the present embodiment can realize DC voltage and detect the switching detected with alternating voltage, thus also can realize warning and the defencive function of step voltage when DC system grounding; In addition, the analysis of voltage judging unit judges that course of action should very rapid sensitive be reliable, should realize for zero time limit in theory, ensures that staff is very fast or also can realize warning and the defencive function of step voltage when running at walking speed.
Described acousto-optic warning unit 3 adopts light emitting diode D10 and 32 ohm loudspeaker, when there is step voltage, sending sound and light alarm signal and noting to point out staff.In the present embodiment, acoustical signal should comprise two kinds, the alerting signal of " ticking " and the cue of escaping danger of " asking Dan Jiaoanyuan road to jump out ground area "; Light signal adopts the longest ruddiness of wavelength, and brightness is sufficient, and flicker is quick, make person on duty when night or more noisy also can arouse attention, light emitting diode is arranged on the full position of monitor, and can arrange multiple.In addition, sound and light signal all should along with the rising of step voltage gradual change rapid, the acoustical signal of " ticking " and the flicker frequency of light signal should improve with the rising of voltage.
Described display unit 4 adopts LCDs, for showing every data and the state of step voltage monitor.In the present embodiment, described display unit 4 specifically adopts TFT color LCD screen.
Described electric shock alarm unit 5 comprises and is arranged on pressure transducer at the bottom of insulated shoes and wireless communication module, after the unfortunate electric shock of staff falls down to the ground, electric shock alarm unit 5 can send wireless communication signal notice master-control room personnel the very first time and rescue electric shock staff.Electric shock alarm unit is by respectively establishing a pressure inductor to realize in staff two volas, and when staff stands or normally walk, the pressure inductor in vola has at least one can sense pressure (human bady gravitational); After staff's electric shock falls down to the ground, two pressure inductors are all responded to less than pressure, now electric shock alarm unit time delay 3 seconds connects the receiving trap being located at master-control room by wireless communication module, the receiving trap of master-control room can send " tour personnel have Danger Electric shock risk, please note! " warning.
Described short-circuit protection unit 6 comprises interconnective triode, protective relay, resistance, electric capacity, diode and short-circuit conductors etc.; being connected with the voltage acquisition unit of bipod of short-circuit protection unit; and the cross section of short-circuit conductors and resistance should meet the demands; when voltage difference exceedes limit value; the process of short circuit voltage table should be sensitive; fast, zero time limit short circuit should be realized in theory.Short-circuit protection unit 6 be voltage judging unit detect voltage exceed the large definite value worked the mischief is known from experience to people time; by short-circuit conductors rapidly by voltage table (go between in Fig. 2 DJD1, DJD2 connect voltage table) short circuit; make equipotential between staff's bipod, thus eliminate step voltage impact.
Described power supply unit 7 comprises battery, and the voltage processing circuitry to be connected with battery, in the present embodiment, described battery adopts rechargeable battery, voltage processing circuitry adopts model to be the step-down controller of MP1584EN, and cell voltage is respectively each power unit and powers after voltage processing circuitry step-down filtering.
Its sheet metal of step voltage monitor described in the present embodiment is arranged on foot, remainder hangs over loins, specific works principle: the sheet metal of foot is connected with the remaining element of loins by lead-in wire, in the process of staff's walking, by the sheet metal stepping down in vola obtain bipod step on the magnitude of voltage at ground place, and judge the voltage difference between bipod by the voltage table of step voltage monitor inside and voltage judging unit 1.Under normal circumstances or when not entering in ground area, between bipod, voltage difference is zero, and acousto-optic warning unit 3 is without display; When there is earth fault and staff has entered ground area, voltage difference will be produced between bipod, when this voltage difference exceedes alarm setting value (can be set as about 5V), acousto-optic warning unit 3 can send obvious sound and light alarm signal, and prompting staff notes entering access area; When voltage difference exceed short circuit definite value (can be set as about 25V) that work the mischief is known from experience to people time, short-circuit protection unit 6 short circuit voltage table, makes equipotential between bipod.Meanwhile, the sound and light signal of acousto-optic warning unit 3 can be rapid with the rising gradual change of magnitude of voltage; After the unfortunate electric shock of person on duty falls down to the ground, step voltage detecting device can also send wireless communication module notice master-control room personnel the very first time and rescue.
Above-described embodiment and graphic and non-limiting product form of the present invention and style, any person of an ordinary skill in the technical field, to its suitable change done or modification, all should be considered as not departing from patent category of the present invention.
Claims (10)
1. step voltage monitor, is characterized in that: comprise voltage judging unit, and the voltage acquisition unit, acousto-optic warning unit, display unit, electric shock alarm unit, short-circuit protection unit and the power supply unit that are connected with voltage judging unit; Described voltage acquisition unit be used for collecting work personnel bipod step on the magnitude of voltage at ground place; send to voltage judging unit by after magnitude of voltage rough handling simultaneously; the analysis of voltage judging unit controls acousto-optic warning unit respectively after judging, display unit, electric shock alarm unit, short-circuit protection unit perform corresponding action, and power supply unit is respectively each power unit of step voltage monitor and provides suitable voltage.
2. step voltage monitor as claimed in claim 1, it is characterized in that: described voltage acquisition unit comprises the sheet metal be arranged at the bottom of staff's insulated shoes, and voltage collection circuit, voltage collection circuit input end connects voltage table, the voltage signal sensed is fed back to voltage collection circuit by lead-in wire by sheet metal, and voltage signal is sent to voltage judging unit by voltage collection circuit after treatment.
3. step voltage monitor as claimed in claim 2, is characterized in that: described sheet metal comprises main sheet metal and the assistant metal sheet of series connection mutually.
4. step voltage monitor as claimed in claim 1, is characterized in that: described voltage judging unit adopts Single-chip Controlling.
5. step voltage monitor as claimed in claim 4, is characterized in that: described single-chip microcomputer adopts model to be the single-chip microcomputer of ATMEGA128.
6. step voltage monitor as claimed in claim 1, is characterized in that: described acousto-optic warning unit adopts light emitting diode and loudspeaker.
7. step voltage monitor as claimed in claim 1, is characterized in that: described display unit adopts LCDs.
8. step voltage monitor as claimed in claim 1, it is characterized in that: described electric shock alarm unit comprises and is arranged on pressure transducer at the bottom of insulated shoes and wireless communication module, after the unfortunate electric shock of staff falls down to the ground, the electric shock alarm unit energy very first time sends wireless communication signal notice master-control room personnel and rescues electric shock staff.
9. step voltage monitor as claimed in claim 1; it is characterized in that: described short-circuit protection unit comprises interconnective triode, protective relay and short-circuit conductors; short-circuit protection unit is connected with the voltage acquisition unit of bipod; when voltage difference exceedes limit value; by short-circuit conductors short circuit voltage table, make equipotential between staff's bipod.
10. step voltage monitor as claimed in claim 1, it is characterized in that: described power supply unit comprises battery, and the voltage processing circuitry to be connected with battery, described battery adopts rechargeable battery, voltage processing circuitry adopts model to be the step-down controller of MP1584EN, and cell voltage is respectively each power unit and powers after voltage processing circuitry step-down filtering.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510890744.XA CN105372481A (en) | 2015-12-07 | 2015-12-07 | Step voltage monitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510890744.XA CN105372481A (en) | 2015-12-07 | 2015-12-07 | Step voltage monitor |
Publications (1)
| Publication Number | Publication Date |
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| CN105372481A true CN105372481A (en) | 2016-03-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510890744.XA Pending CN105372481A (en) | 2015-12-07 | 2015-12-07 | Step voltage monitor |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106072973A (en) * | 2016-07-28 | 2016-11-09 | 国网山东省电力公司惠民县供电公司 | A kind of step voltage monitor and detection device |
| CN107390016A (en) * | 2017-09-01 | 2017-11-24 | 海南电网有限责任公司万宁供电局 | A kind of step voltage early warning footwear |
| CN109189055A (en) * | 2016-05-11 | 2019-01-11 | 国网山东省电力公司高唐县供电公司 | A kind of detection method of step voltage |
| CN109683001A (en) * | 2019-02-19 | 2019-04-26 | 云南电网有限责任公司普洱供电局 | A kind of equipotential field protective device |
| CN110045176A (en) * | 2019-03-20 | 2019-07-23 | 国网河南省电力公司电力科学研究院 | Industrial equipment contact voltage monitoring device and system |
| CN110327049A (en) * | 2018-08-22 | 2019-10-15 | 宁波送变电建设有限公司永耀科技分公司 | It is a kind of electric shock bracelet monitoring electric power first-aid scene application |
| CN110839981A (en) * | 2019-11-06 | 2020-02-28 | 国网山东省电力公司昌乐县供电公司 | Active intelligent wearable electric shock separation device |
| CN112964925A (en) * | 2021-02-20 | 2021-06-15 | 云南电网有限责任公司电力科学研究院 | Step voltage monitoring device based on human body model |
| CN113740763A (en) * | 2021-08-10 | 2021-12-03 | 国网辽宁省电力有限公司营口供电公司 | Single-phase grounding monitoring alarm and area judgment device and method for 10kV system of transformer substation |
| CN114446018A (en) * | 2021-12-31 | 2022-05-06 | 深圳供电局有限公司 | Step voltage protection device and step voltage protection wearing device |
| CN115088905A (en) * | 2022-06-28 | 2022-09-23 | 广东电网有限责任公司东莞供电局 | Vibration audible and visual alarm and numerical display near-electric induction insulating shoe |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109189055B (en) * | 2016-05-11 | 2021-08-10 | 国网山东省电力公司高唐县供电公司 | Detection method of step voltage |
| CN109189055A (en) * | 2016-05-11 | 2019-01-11 | 国网山东省电力公司高唐县供电公司 | A kind of detection method of step voltage |
| CN106072973A (en) * | 2016-07-28 | 2016-11-09 | 国网山东省电力公司惠民县供电公司 | A kind of step voltage monitor and detection device |
| CN107390016A (en) * | 2017-09-01 | 2017-11-24 | 海南电网有限责任公司万宁供电局 | A kind of step voltage early warning footwear |
| CN110327049B (en) * | 2018-08-22 | 2021-11-30 | 宁波送变电建设有限公司永耀科技分公司 | Application of electric shock bracelet in monitoring electric power rush-repair site |
| CN110327049A (en) * | 2018-08-22 | 2019-10-15 | 宁波送变电建设有限公司永耀科技分公司 | It is a kind of electric shock bracelet monitoring electric power first-aid scene application |
| CN109683001A (en) * | 2019-02-19 | 2019-04-26 | 云南电网有限责任公司普洱供电局 | A kind of equipotential field protective device |
| CN110045176A (en) * | 2019-03-20 | 2019-07-23 | 国网河南省电力公司电力科学研究院 | Industrial equipment contact voltage monitoring device and system |
| CN110839981A (en) * | 2019-11-06 | 2020-02-28 | 国网山东省电力公司昌乐县供电公司 | Active intelligent wearable electric shock separation device |
| CN110839981B (en) * | 2019-11-06 | 2023-11-21 | 国网山东省电力公司昌乐县供电公司 | Active intelligent wearing electric shock disengaging device |
| CN112964925A (en) * | 2021-02-20 | 2021-06-15 | 云南电网有限责任公司电力科学研究院 | Step voltage monitoring device based on human body model |
| CN113740763A (en) * | 2021-08-10 | 2021-12-03 | 国网辽宁省电力有限公司营口供电公司 | Single-phase grounding monitoring alarm and area judgment device and method for 10kV system of transformer substation |
| CN114446018A (en) * | 2021-12-31 | 2022-05-06 | 深圳供电局有限公司 | Step voltage protection device and step voltage protection wearing device |
| CN115088905A (en) * | 2022-06-28 | 2022-09-23 | 广东电网有限责任公司东莞供电局 | Vibration audible and visual alarm and numerical display near-electric induction insulating shoe |
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