CN207424090U - A kind of portable earth strap telegram alarm device - Google Patents
A kind of portable earth strap telegram alarm device Download PDFInfo
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- CN207424090U CN207424090U CN201721624722.XU CN201721624722U CN207424090U CN 207424090 U CN207424090 U CN 207424090U CN 201721624722 U CN201721624722 U CN 201721624722U CN 207424090 U CN207424090 U CN 207424090U
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- 238000005070 sampling Methods 0.000 claims abstract description 23
- 210000000080 chela (arthropods) Anatomy 0.000 claims abstract description 4
- 238000001914 filtration Methods 0.000 claims description 7
- 238000013519 translation Methods 0.000 claims description 7
- 238000006243 chemical reaction Methods 0.000 claims description 5
- 230000003750 conditioning effect Effects 0.000 claims description 2
- 239000004020 conductor Substances 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 238000012544 monitoring process Methods 0.000 description 3
- 230000001143 conditioned effect Effects 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
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Abstract
The utility model discloses a kind of portable earth strap telegram alarm devices, including clamping together the pincerlike sensor on ground wire, the pincer sensor is equipped with current sampling circuit, audible alarm circuit, the battery powered and charging circuit powered for current sampling circuit and sound warning circuit, the current sampling circuit is for acquisition ground connection line current and inputs audible alarm circuit, the audible alarm circuit includes main control MCU, voice drive circuit and loudspeaker, the ground wire current signal that the main control MCU acquisition current sampling circuit obtains, and when current signal is higher than safe threshold, control voice drive circuit driving loudspeaker send alarm sound.The utility model had both been provided with the convenience of clamp ammeter, dismounting easy to install, portability, and was provided with the intelligent alarm function of on-Line Monitor Device.
Description
Technical field
The utility model is related to power safety techniques, and in particular to earth strap telegram alarm device.
Background technology
Hanging earthing conductor is one of safety curtain for protecting service personnel, can prevent injury of the incoming call to human body suddenly.Maintenance
Personnel wonder the state of hanging earthing conductor, such as whether have the size of electric current or electric current in ground wire, and there are two types of traditional sides
Formula：
First, directly installing ammeter on ground wire, service personnel manually directly reads ammeter indicating value and judges to be grounded again
Wire state.This method needs service personnel to pay attention to ammeter indicating value the moment, disperses service personnel's attention, intelligence degree is not
It is high.
Second is that install on-Line Monitor Device on ground wire, a set of monitoring system is disposed, automatic monitoring ground line current, and
State is judged and in the alarm that transfinites according to threshold values, to prompt service personnel.This mode can meet live functional requirement, but
It is system complex, maps out the work numerous and diverse, expend service personnel's time, convenience is not high enough.
Utility model content
Technical problem to be solved in the utility model is just to provide a kind of portable earth strap telegram alarm device, both has
There are the portable ease for operation of clamp ammeter, and the intelligent alarm function with on-line monitoring system.
In order to solve the above technical problems, the utility model adopts the following technical solution：A kind of portable earth strap telegram
Alarm device, including clamping together the pincerlike sensor on ground wire, the pincer sensor is equipped with current sampling circuit, audible alarm
Circuit is battery powered and charging circuit that current sampling circuit and sound warning circuit are powered, and the current sampling circuit is used
In acquisition ground connection line current and input audible alarm circuit, the audible alarm circuit include main control MCU, voice drive circuit with
And loudspeaker, the ground wire current signal that the main control MCU acquisition current sampling circuit obtains, and it is higher than safety valve in current signal
During value, control voice drive circuit driving loudspeaker send alarm sound.
Preferably, the current sampling circuit is equipped with I/V translation circuits and filtering and amplifying circuit, the I/V translation circuits
Current signal is transformed into voltage signal, the filtering and amplifying circuit is amplified and filters tune to the voltage signal after conversion
Reason.
Preferably, the pincerlike sensor is equipped with the battery capacity indication lamp that instruction rechargeable battery needs charge.
Preferably, the voice drive circuit uses WTB015 speech chips.
Preferably, the alarming threshold value that the pincerlike sensor is equipped with the safe threshold for setting alarm sets knob.
The advantages of the utility model combination clamp ammeter, one piece of current sampling of design and installation and report in clamp ammeter
Alert circuit module, after gathering ground connection line current by clip style sensor, audible alarm circuit is directly carried out with the threshold values configured
Compare, transfinite and directly send audio alert by voice drive circuit driving loudspeaker, to prompt service personnel that circuit is charged.Therefore,
Both the convenience of clamp ammeter, dismounting easy to install, portability be provided with, and has been provided with the intelligence report of on-Line Monitor Device
Alert function.
Description of the drawings
The utility model is further described with reference to the accompanying drawings and detailed description：
Fig. 1 is the schematic block circuit diagram of the utility model；
Fig. 2 is the circuit block diagram of audible alarm circuit；
Fig. 3 is the work flow diagram of the utility model；
Fig. 4 is the circuit diagram of current sampling circuit.
Specific embodiment
As shown in Figure 1, a kind of portable earth strap telegram alarm device, including pincerlike sensor, the pincer sensor
Equipped with current sampling circuit, audible alarm circuit, the battery powered powered for current sampling circuit and sound warning circuit and fill
Circuit, the current sampling circuit is for acquisition ground connection line current and inputs audible alarm circuit, the current sampling circuit
Equipped with I/V translation circuits and filtering and amplifying circuit, the audible alarm circuit includes main control MCU, voice drive circuit and loudspeaker
.
Wherein, pincerlike sensor can be clamped directly in hanging earthing conductor.As shown in figure 4, the current sampling circuit is equipped with
I/V translation circuits and filtering and amplifying circuit, current sampling circuit are sampled the power frequency current signal in hanging earthing conductor, first lead to
Cross I/V translation circuits and realize I/V conversion, current signal is transformed into voltage signal, then by filtering and amplifying circuit to conversion after
Voltage signal be amplified and filter conditioning, then by conditioned signal input audible alarm circuit.
As shown in Figures 2 and 3, the audible alarm circuit includes main control MCU, voice drive circuit and loudspeaker, master control
Contain AD conversion module inside MCU, conditioned signal is input to AD inside MCU by the simulation I/O port of MCU, realizes to ground line current
Acquisition, storage, calculate and analysis, then voice drive circuit is driven by digital I/O port, realize speaker sound report
Alert purpose.Concrete principle is：Main control MCU gathers hanging earthing conductor current signal, when current signal is higher than some safe threshold,
Control voice drive circuit sends " circuit has electricity " sound, and instruction high voltage bus is in electriferous state；When current signal is less than certain
During a safe threshold, voice drive circuit is closed, instruction high voltage bus is in power down mode.
Wherein, the voice drive circuit uses WTB015 speech chips.WTB015 speech chips be it is a low cost and
4 miniature speech processors of OTP with audio synthesizer, including：The digital logical operation device of 4, EPROM, RAM, I/O end
Mouth, timer, clock generator, Voice and Melody synthesizers, support D/A and PWM outputs etc..Audio synthesizer includes 1
Passage Voice and 2 passage Melody.In addition, WTB015 speech chips are manufactured using COMS techniques, and sleep mode is to reduce work(
Consumption." circuit is charged " sound can be stored in inside WTB015 in EPROM, it is necessary to when alarming by computer in advance, MCU is direct
By I/O port WTB015 is controlled to export sound to loudspeaker.
Pincerlike sensor has shell, current sampling circuit, audible alarm circuit, battery powered and charging circuit and battery
The enclosure of pincerlike sensor is embedded in, for shell equipped with switch, range button, alarming threshold value sets knob and battery instruction
Lamp.Range button can switch between 500mA and 5000mA ranges；Alarming threshold value sets what knob can be alarmed with manual setting
Safe threshold, set-point are 0.1,0.2,0.5,1 times of range, and connect high level by knob gear carries out to the I/O port of MCU
Identification；Equipped with 1Ah lithium batteries inside equipment, circuit power supply is realized, master cpu can gather battery level information, work as electricity simultaneously
When low, need to charge to equipment by indicator light prompting.
Service personnel is after hanging earthing conductor, during directly the insertion of clamp warning device is grounded, start.Clamp is alarmed
Device automatic collection is grounded line current, and makes a sound warning function automatically when transfiniting, and prompts service personnel's circuit charged.This
Apparatus structure is a clamp ammeter, within quality 0.2kg, has a portability, ease for operation, automatic sound warning function,
It is at low cost, the advantages that onsite application facilitates.
In addition to above preferred embodiment, the utility model also has other embodiments, and those skilled in the art can root
It is made various changes and modifications according to the utility model, without departing from the spirit of the utility model, the utility model should all be belonged to
Scope as defined in the claims.
Claims (5)
1. a kind of portable earth strap telegram alarm device, which is characterized in that including clamping together the pincerlike sensor on ground wire,
The pincer sensor is equipped with current sampling circuit, audible alarm circuit, powers for current sampling circuit and sound warning circuit
Battery powered and charging circuit, the current sampling circuit is for gathering ground connection line current and input audible alarm circuit, institute
Stating audible alarm circuit includes main control MCU, voice drive circuit and loudspeaker, and the main control MCU acquisition current sampling circuit obtains
The ground wire current signal taken, and when current signal is higher than safe threshold, control voice drive circuit driving loudspeaker send report
Alert sound.
A kind of 2. portable earth strap telegram alarm device according to claim 1, which is characterized in that the current sampling
Circuit is equipped with I/V translation circuits and filtering and amplifying circuit, and current signal is transformed into voltage signal by the I/V translation circuits, institute
It states filtering and amplifying circuit and the voltage signal after conversion is amplified and is filtered conditioning.
A kind of 3. portable earth strap telegram alarm device according to claim 1, which is characterized in that the pincerlike sensing
Device is equipped with the battery capacity indication lamp that instruction rechargeable battery needs charge.
A kind of 4. portable earth strap telegram alarm device according to claim 1, which is characterized in that the sound driver
Circuit uses WTB015 speech chips.
A kind of 5. portable earth strap telegram alarm device according to claim 1, which is characterized in that the pincerlike sensing
The alarming threshold value that device is equipped with the safe threshold for setting alarm sets knob.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721624722.XU CN207424090U (en) | 2017-11-29 | 2017-11-29 | A kind of portable earth strap telegram alarm device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721624722.XU CN207424090U (en) | 2017-11-29 | 2017-11-29 | A kind of portable earth strap telegram alarm device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207424090U true CN207424090U (en) | 2018-05-29 |
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ID=62396647
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721624722.XU Active CN207424090U (en) | 2017-11-29 | 2017-11-29 | A kind of portable earth strap telegram alarm device |
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| Country | Link |
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| CN (1) | CN207424090U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108459198A (en) * | 2017-11-29 | 2018-08-28 | 国网浙江省电力公司绍兴供电公司 | A kind of portable earth strap telegram alarm device |
-
2017
- 2017-11-29 CN CN201721624722.XU patent/CN207424090U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108459198A (en) * | 2017-11-29 | 2018-08-28 | 国网浙江省电力公司绍兴供电公司 | A kind of portable earth strap telegram alarm device |
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