CN209357188U - Safety warning device device and system are maked an inspection tour by power plant - Google Patents
Safety warning device device and system are maked an inspection tour by power plant Download PDFInfo
- Publication number
- CN209357188U CN209357188U CN201822273167.1U CN201822273167U CN209357188U CN 209357188 U CN209357188 U CN 209357188U CN 201822273167 U CN201822273167 U CN 201822273167U CN 209357188 U CN209357188 U CN 209357188U
- Authority
- CN
- China
- Prior art keywords
- power plant
- maked
- switch
- inspection tour
- safety warning
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000007689 inspection Methods 0.000 title claims abstract description 29
- 235000013399 edible fruits Nutrition 0.000 claims 1
- 238000012360 testing method Methods 0.000 abstract description 9
- 230000005540 biological transmission Effects 0.000 abstract description 6
- 238000000034 method Methods 0.000 description 7
- 230000008901 benefit Effects 0.000 description 6
- 238000005259 measurement Methods 0.000 description 5
- 230000006378 damage Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000002604 ultrasonography Methods 0.000 description 2
- 208000033748 Device issues Diseases 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 210000003414 extremity Anatomy 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000505 pernicious effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 210000000707 wrist Anatomy 0.000 description 1
Landscapes
- Alarm Systems (AREA)
Abstract
The utility model provides power plant and makes an inspection tour safety warning device device and system, comprising: control processor, distance measuring sensor, warning acoustic device and shifting switch;Distance measuring sensor, warning acoustic device and shifting switch are connected with control processor respectively;Distance measuring sensor is used to measure the detecting distance between power plant tour personnel and equipment;Control processor is used to receive the detecting distance of distance measuring sensor transmission, and will test distance and be compared with pre-determined distance threshold value, and comparison result is sent to warning acoustic device;Warning acoustic device is used to receive the comparison result of control processor transmission, and responds information according to comparison result;Wherein, pre-determined distance threshold value is determined by selected voltage gear in shifting switch, it is ensured that the personal safety of power plant tour personnel improves working efficiency.
Description
Technical field
The utility model relates to power system security technical field, more particularly, to power plant make an inspection tour safety warning device device and
System.
Background technique
In power system accident, personal injury caused by pernicious misoperation fault, mistakenly entering charged chamber, equipment damage,
System blackout accident ratio accounts for the overwhelming majority.To find out its cause, being mainly both factors: one, human factor: external staff
Or operating crew is unfamiliar with scene, the safety responsibility heart is not strong at work, and awareness of safety is shallow, supervises in operation or in work
It protects not in place, is not operated or worked in strict accordance with technical specification of security;Two, apparatus factor: equipment indicate unclear, equipment without
Reliable to be latched, without security warning and reliable quarantine measures, these all seriously threaten the personal safety of tour personnel.Through consulting
2000 to 2017 occur electric shock accidents analysis, 80% or more electric shock accidents be electric shock personnel can not sesolution apparatus be
No electrification or electric shock personnel's body part are more than defined safe distance.
Utility model content
In view of this, the purpose of this utility model is to provide power plant to make an inspection tour safety warning device device and system, Ke Yibao
The personal safety of power plant tour personnel is demonstrate,proved, working efficiency is improved.
In a first aspect, the utility model embodiment provides a kind of power plant's tour safety warning device device, described device packet
It includes: control processor, distance measuring sensor, warning acoustic device and shifting switch;
The distance measuring sensor, the warning acoustic device and the shifting switch are connected with the control processor respectively
It connects;
The distance measuring sensor, for measuring the detecting distance between power plant tour personnel and equipment;
The control processor, the detecting distance sent for receiving the distance measuring sensor, and by the detection
Distance is compared with pre-determined distance threshold value, and comparison result is sent to the warning acoustic device;
The warning acoustic device, the comparison result sent for receiving the control processor, and according to the ratio
Information is responded to result;
Wherein, the pre-determined distance threshold value is determined by selected voltage gear in the shifting switch.
With reference to first aspect, the utility model embodiment provides the first possible embodiment of first aspect,
In, the control processor is ARM single-chip microcontroller, and the ARM single-chip microcontroller is STM32F407 chip.
With reference to first aspect, the utility model embodiment provides second of possible embodiment of first aspect,
In, the distance measuring sensor includes ultrasonic distance-measuring sensor.
With reference to first aspect, the utility model embodiment provides the third possible embodiment of first aspect,
In, the warning acoustic device includes piezo buzzer.
With reference to first aspect, the utility model embodiment provides the 4th kind of possible embodiment of first aspect,
In, the shifting switch includes toggle switch, the toggle switch include starting turn off the switch, first voltage driving switch, the
Two voltage driving switch and tertiary voltage driving switch.
The 4th kind of possible embodiment with reference to first aspect, the utility model embodiment provide the of first aspect
Five kinds of possible embodiments, wherein when the shifting switch is the first voltage driving switch, the pre-determined distance threshold
Value is 0.7m-0.9m, and the corresponding voltage of the equipment is less than or equal to 10KV.
The 4th kind of possible embodiment with reference to first aspect, the utility model embodiment provide the of first aspect
Six kinds of possible embodiments, wherein when the shifting switch is the second voltage driving switch, the pre-determined distance threshold
Value is 1.0m-1.2m, and the corresponding voltage of the equipment is 35KV.
The 4th kind of possible embodiment with reference to first aspect, the utility model embodiment provide the of first aspect
Seven kinds of possible embodiments, wherein when the shifting switch is the tertiary voltage driving switch, the pre-determined distance threshold
Value is 1.5m-1.7m, and the corresponding voltage of the equipment is 110KV.
The 7th kind of possible embodiment with reference to first aspect, the utility model embodiment provide the of first aspect
Eight kinds of possible embodiments, wherein the warning acoustic device is also used in the comparison result be the pre-determined distance threshold value
In the case where the detecting distance, alarming sound is issued.
Second aspect, the utility model embodiment also provide power plant and make an inspection tour safety warning device system, including as described above
Safety warning device device is maked an inspection tour by power plant.
The utility model embodiment provides power plant and makes an inspection tour safety warning device device and system, comprising: control processor, survey
Away from sensor, warning acoustic device and shifting switch;Distance measuring sensor, warning acoustic device and shifting switch respectively with control processor
It is connected;Distance measuring sensor is used to measure the detecting distance between power plant tour personnel and equipment;Control processor is for receiving
The detecting distance that distance measuring sensor is sent, and will test distance and be compared with pre-determined distance threshold value, comparison result is sent to
Warn acoustic device;Warning acoustic device is used to receive the comparison result of control processor transmission, and is responded according to comparison result
Information;Wherein, pre-determined distance threshold value is determined by selected voltage gear in shifting switch, it is ensured that power plant tour personnel
Personal safety, improve working efficiency.
Other feature and advantage of the utility model will illustrate in the following description, also, partly from specification
In become apparent, or understood and implementing the utility model.The purpose of this utility model and other advantages are illustrating
Specifically noted structure is achieved and obtained in book, claims and attached drawing.
To enable the above objects, features, and advantages of the utility model to be clearer and more comprehensible, preferred embodiment is cited below particularly, and
Cooperate appended attached drawing, is described in detail below.
Detailed description of the invention
It, below will be right in order to illustrate more clearly of specific embodiment of the present invention or technical solution in the prior art
Specific embodiment or attached drawing needed to be used in the description of the prior art are briefly described, it should be apparent that, it is described below
In attached drawing be that some embodiments of the utility model are not paying creativeness for those of ordinary skill in the art
Under the premise of labour, it is also possible to obtain other drawings based on these drawings.
Fig. 1 is that safety warning device schematic device is maked an inspection tour by power plant provided by the embodiment of the utility model;
Fig. 2 is that distance measuring sensor principle signal in safety warning device device is maked an inspection tour by power plant provided by the embodiment of the utility model
Figure;
Fig. 3 is that safety warning device device circuit board schematic diagram is maked an inspection tour by power plant provided by the embodiment of the utility model;
Fig. 4 is that shifting switch schematic diagram in safety warning device device is maked an inspection tour by power plant provided by the embodiment of the utility model.
Icon:
10- control processor;20- distance measuring sensor;30- warns acoustic device;40- shifting switch.
Specific embodiment
To keep the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, below in conjunction with attached drawing to this
The technical solution of utility model is clearly and completely described, it is clear that described embodiment is that the utility model a part is real
Example is applied, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art are not making
Every other embodiment obtained, fall within the protection scope of the utility model under the premise of creative work.
To be described in detail to the utility model embodiment below convenient for understanding the present embodiment.
Fig. 1 is that safety warning device schematic device is maked an inspection tour by power plant.
Referring to Fig.1, which includes: control processor 10, distance measuring sensor 20, warning acoustic device 30 and shifting switch
40;
Distance measuring sensor 20, warning acoustic device 30 and shifting switch 40 are connected with control processor 10 respectively;
Distance measuring sensor 20, for measuring the detecting distance between power plant tour personnel and equipment;
Specifically, distance measuring sensor 20 mainly includes laser range sensor, infrared distance measuring sensor and ultrasound
Away from three kinds of sensor, but these three are not limited only to, by laser range sensor, infrared distance measuring sensor and ultrasound
It is studied away from biosensor analysis, ultrasonic distance-measuring sensor has lower cost, higher measurement accuracy and simple structure, because
This, distance measuring sensor 20 selects ultrasonic distance-measuring sensor.In addition, as shown in Fig. 2, in general power plant normal operation
In environment, choose fixed object, measurement temperature is 27.3 degrees Celsius, distance measuring sensor 20 with 60 ° of fixed object angle
Direction is mobile, and primary every 10cm measurement, after tested, measurement accuracy meets the requirement of installation in 3mm.
Control processor 10, for receiving the detecting distance of the transmission of distance measuring sensor 20, and will test distance with it is default away from
It is compared from threshold value, comparison result is sent to warning acoustic device 30;
Specifically, 10 primary recipient distance measuring sensor 20 of control processor send detecting distance, and will test distance with
Pre-determined distance threshold value is compared, and comparison result is sent to warning acoustic device 30.Control processor 10 is usually to utilize monolithic
Machine microsystem realizes that commonly predominantly 51 single-chip microcontroller series and arm processor are serial, but are not limited only to both, such as Fig. 3
It is shown, it is contemplated that data handled by arm processor series are not allowed in the case where big workload much larger than 51 single-chip microcontrollers series
It is error-prone, arm processor series is selected here.
Arm processor series in be easy to develop and market it is with a relatively high cost performance mainly have STM32F407 chip and
STM32F103 chip, but both chips are not limited only to, compared with STM32F103 chip, STM32F407 chip is in dominant frequency
In terms of with ARM advantageously, faster, and energy consumption is relatively lower for processing speed, and therefore, control processor 10 is that ARM is handled here
The STM32F407 chip of device series.The parameter of arm processor is referring in particular to table 1:
Table 1
Acoustic device 30 is warned, for receiving the comparison result of the transmission of control processor 10, and sound is made according to comparison result
Answer information;
Wherein, pre-determined distance threshold value is determined by selected voltage gear in shifting switch 40.
Specifically, when it includes detecting distance that comparison result, which is pre-determined distance threshold value, warning acoustic device 30 issues alarming sound.
Common warning acoustic device 30 has loudspeaker and two kinds of buzzer, but is not limited only to both, the work of loudspeaker and buzzer
Principle is similar, but buzzer is smaller, therefore warning acoustic device 30 selects buzzer here, and the parameter of buzzer is specifically joined
According to shown in table 2:
Table 2
Buzzer is broadly divided into piezo buzzer and electromagnetic buzzer, but is not limited only to both buzzers, piezoelectricity
Formula buzzer has a clear superiority on service life and power consumption, it is contemplated that the actual conditions for needing to be used for a long time, therefore it is final alert
Show that acoustic device 30 selects piezo buzzer.
Shifting switch 40 mainly has rotary switch and two kinds of toggle switch according to pattern, but is not limited only to both, such as Fig. 4
Shown, toggle switch compares rotary switch, and with the small and at low cost advantage of size, therefore the selection of shifting switch 40 here is stirred
Switch.
Further, shifting switch 40 include starting turn off the switch, first voltage driving switch, second voltage driving switch
With tertiary voltage driving switch.When shifting switch 40 is first voltage driving switch, pre-determined distance threshold value is 0.7m-0.9m,
The corresponding voltage of equipment is less than or equal to 10KV;When shifting switch 40 is second voltage driving switch, pre-determined distance threshold value is
1.0m-1.2m the corresponding voltage of equipment is 35KV;When shifting switch 40 is tertiary voltage driving switch, pre-determined distance threshold value
For 1.5m-1.7m, the corresponding voltage of equipment is 110KV.
Specifically, the safety warning device after assembling is in tri- voltage gears of 10KV and following, 35KV and 110KV distance respectively
Alarming sound is successfully issued when equipment 0.7m-0.9m, 1.0m-1.2m and 1.5m-1.7m, the Shi Bufa outside pre-determined distance threshold range
Alarming sound out.For example, making an inspection tour scene to the power plant in certain place carries out field test, safety warning device is worn on hand by tour personnel
At wrist, and using master scale ruler measurement safety warning device issue when alarming sound and alarming sound stop safety warning device and equipment it
Between minimum distance.When tour personnel detects in 10KV switchgear house, the alarming sound of safety warning device starts, terminates in fact
Error of the border within presence ± 3mm, but include that the distance of error is not admitted to pre-determined distance threshold range, test result is aobvious
Show that the detecting distance of safety warning device and 10KV and following equipment accurately issues alarming sound in 0.7m-0.9m, this it is default away from
From then stopping alarming sound except threshold range;When tour personnel detects in 35KV switchgear house, the police of safety warning device
Show that sound starts, terminates error within actual range presence ± 3mm, but includes that the distance of error is not admitted to pre-determined distance threshold value
Range, test result show that the detecting distance of safety warning device and 35KV and following equipment accurately issues police in 1.0m-1.2m
Show sound, then stops alarming sound except the pre-determined distance threshold range;When tour personnel detects in 110KV switchgear house
When, the alarming sound of safety warning device starts, terminates error within actual range presence ± 3mm, but include error distance it is equal
It is not belonging to pre-determined distance threshold range, test result shows that the detecting distance of safety warning device and 110KV and following equipment exists
Alarming sound is accurately issued in 1.5m-1.7m, then stops alarming sound except the pre-determined distance threshold range.
Further, safety warning device is maked an inspection tour according to the difference of usage mode by power plant, can be divided into scene it is fixed and with
Body portable type, it is contemplated that easy to operate and economic benefit selects carried type here, can repeatedly use.
Further, for carried type safety warning device, and it is divided into wear-type, wristband type universal serial and chest card formula, in order to just
In fixed and preferably protection power plant tour personnel safety, the safety warning device of wristband type universal serial is selected here, is convenient for tour personnel
Wear and be used for multiple times, reduce the operating pressure of tour personnel, preferably solve tour personnel's limb part be more than safety away from
From the problem of, to ensure the personal safety of tour personnel at work.
Further, the utility model additionally provides power plant and makes an inspection tour safety warning device system, including power plant as described above
Make an inspection tour safety warning device device.
The utility model embodiment provides power plant and makes an inspection tour safety warning device device and system, comprising: control processor, survey
Away from sensor, warning acoustic device and shifting switch;Distance measuring sensor, warning acoustic device and shifting switch respectively with control processor
It is connected;Distance measuring sensor is used to measure the detecting distance between power plant tour personnel and equipment;Control processor is for receiving
The detecting distance that distance measuring sensor is sent, and will test distance and be compared with pre-determined distance threshold value, comparison result is sent to
Warn acoustic device;Warning acoustic device is used to receive the comparison result of control processor transmission, and is responded according to comparison result
Information;Wherein, pre-determined distance threshold value is determined by selected voltage gear in shifting switch, it is ensured that power plant tour personnel
Personal safety, improve working efficiency.
Device provided by the utility model embodiment for the specific hardware in equipment or can be installed in equipment
Software or firmware etc..The technical effect of device provided by the utility model embodiment, realization principle and generation and aforementioned side
Method embodiment is identical, and to briefly describe, Installation practice part does not refer to place, can refer in corresponding in preceding method embodiment
Hold.It is apparent to those skilled in the art that for convenience and simplicity of description, the system of foregoing description, device
With the specific work process of unit, the corresponding process during reference can be made to the above method embodiment, details are not described herein.
The unit as illustrated by the separation member may or may not be physically separated, aobvious as unit
The component shown may or may not be physical unit, it can and it is in one place, or may be distributed over multiple
In network unit.It can select some or all of unit therein according to the actual needs to realize the mesh of this embodiment scheme
's.
In addition, each functional unit in embodiment provided by the utility model can integrate in one processing unit,
It is also possible to each unit to physically exist alone, can also be integrated in one unit with two or more units.
It, can be with if the function is realized in the form of SFU software functional unit and when sold or used as an independent product
It is stored in the executable non-volatile computer-readable storage medium of a processor.Based on this understanding, this is practical
Substantially the part of the part that contributes to existing technology or the technical solution can be in other words for novel technical solution
The form of software product embodies, which is stored in a storage medium, including some instructions to
So that computer equipment (can be personal computer, server or the network equipment an etc.) execution the utility model is each
The all or part of the steps of embodiment the method.And storage medium above-mentioned includes: USB flash disk, mobile hard disk, read-only memory
(ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), magnetic or disk
Etc. the various media that can store program code.
It is in the description of the present invention, it should be noted that term " center ", "upper", "lower", "left", "right", " perpendicular
Directly ", the orientation or positional relationship of the instructions such as "horizontal", "inner", "outside" is to be based on the orientation or positional relationship shown in the drawings, and is only
For ease of description the utility model and simplify description, rather than the device or element of indication or suggestion meaning must have it is specific
Orientation, be constructed and operated in a specific orientation, therefore should not be understood as limiting the present invention.
In addition, term " first ", " second ", " third " are used for description purposes only, it is not understood to indicate or imply phase
To importance.
Finally, it should be noted that embodiment described above, only specific embodiment of the present utility model, to illustrate this
The technical solution of utility model, rather than its limitations, the protection scope of the utility model is not limited thereto, although referring to aforementioned
The utility model is described in detail in embodiment, those skilled in the art should understand that: it is any to be familiar with this skill
The technical staff in art field within the technical scope disclosed by the utility model, still can be to skill documented by previous embodiment
Art scheme modify or can readily occur in variation or equivalent replacement of some of the technical features;And these modifications,
Variation or replacement, the spirit and model of the utility model embodiment technical solution that it does not separate the essence of the corresponding technical solution
It encloses, should be covered within the scope of the utility model.Therefore, the protection scope of the utility model is answered described is wanted with right
Subject to the protection scope asked.
Claims (10)
1. safety warning device device is maked an inspection tour by a kind of power plant, which is characterized in that described device includes: control processor, ranging sensing
Device, warning acoustic device and shifting switch;
The distance measuring sensor, the warning acoustic device and the shifting switch are connected with the control processor respectively;
The distance measuring sensor, for measuring the detecting distance between power plant tour personnel and equipment;
The control processor, the detecting distance sent for receiving the distance measuring sensor, and by the detecting distance
It is compared with pre-determined distance threshold value, comparison result is sent to the warning acoustic device;
The warning acoustic device, the comparison result sent for receiving the control processor, and tied according to the comparison
Fruit responds information;
Wherein, the pre-determined distance threshold value is determined by selected voltage gear in the shifting switch.
2. safety warning device device is maked an inspection tour by power plant according to claim 1, which is characterized in that the control processor is
ARM single-chip microcontroller, the ARM single-chip microcontroller are STM32F407 chip.
3. safety warning device device is maked an inspection tour by power plant according to claim 1, which is characterized in that the distance measuring sensor includes
Ultrasonic distance-measuring sensor.
4. safety warning device device is maked an inspection tour by power plant according to claim 1, which is characterized in that the warning acoustic device includes
Piezo buzzer.
5. safety warning device device is maked an inspection tour by power plant according to claim 1, which is characterized in that the shifting switch includes dialling
Dynamic switch, the toggle switch is turned off the switch including starting, first voltage driving switch, second voltage driving switch and third are electric
Press driving switch.
6. safety warning device device is maked an inspection tour by power plant according to claim 5, which is characterized in that when the shifting switch is institute
When stating first voltage driving switch, the pre-determined distance threshold value is 0.7m-0.9m, and the corresponding voltage of the equipment is less than or equal to
10KV。
7. safety warning device device is maked an inspection tour by power plant according to claim 5, which is characterized in that when the shifting switch is institute
When stating second voltage driving switch, the pre-determined distance threshold value is 1.0m-1.2m, and the corresponding voltage of the equipment is 35KV.
8. safety warning device device is maked an inspection tour by power plant according to claim 5, which is characterized in that when the shifting switch is institute
When stating tertiary voltage driving switch, the pre-determined distance threshold value is 1.5m-1.7m, and the corresponding voltage of the equipment is 110KV.
9. safety warning device device is maked an inspection tour by power plant according to claim 8, which is characterized in that the warning acoustic device, also
For issuing alarming sound in the case where it includes the detecting distance that the comparison result, which is the pre-determined distance threshold value,.
10. safety warning device system is maked an inspection tour by a kind of power plant, which is characterized in that including any one of claim 1 to claim 9 institute
Safety warning device device is maked an inspection tour by the power plant stated.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201822273167.1U CN209357188U (en) | 2018-12-29 | 2018-12-29 | Safety warning device device and system are maked an inspection tour by power plant |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201822273167.1U CN209357188U (en) | 2018-12-29 | 2018-12-29 | Safety warning device device and system are maked an inspection tour by power plant |
Publications (1)
Publication Number | Publication Date |
---|---|
CN209357188U true CN209357188U (en) | 2019-09-06 |
Family
ID=67802132
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201822273167.1U Active CN209357188U (en) | 2018-12-29 | 2018-12-29 | Safety warning device device and system are maked an inspection tour by power plant |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN209357188U (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN112183265A (en) * | 2020-09-17 | 2021-01-05 | 国家电网有限公司 | Electric power construction video monitoring and alarming method and system based on image recognition |
-
2018
- 2018-12-29 CN CN201822273167.1U patent/CN209357188U/en active Active
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN112183265A (en) * | 2020-09-17 | 2021-01-05 | 国家电网有限公司 | Electric power construction video monitoring and alarming method and system based on image recognition |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN204010247U (en) | Gas intelligent alarming control system | |
CN201607883U (en) | Intelligent warning board used for power transformer equipment | |
CN202748901U (en) | Wireless monitoring and early warning system for fire hazard | |
CN203490359U (en) | Portable transformer station noise imaging positioning detecting device | |
CN209357188U (en) | Safety warning device device and system are maked an inspection tour by power plant | |
CN104932351A (en) | Wearable intelligent card used for swimmer state monitoring | |
CN104181563A (en) | Beidou GPS based dual-mode personnel safety management system | |
CN102583160A (en) | Anti-collision device for lifting hook of crane | |
CN205486608U (en) | Fire disaster alarm system | |
CN203861830U (en) | Wireless pressure alarm system for fire extinction steel cylinder | |
CN103552942A (en) | Remote tower crane monitoring circuit with self-diagnostic function | |
CN104181564A (en) | Beidou/GPS based dual-mode personnel positioning terminal | |
CN105203937A (en) | Internal discharge mode recognition method and fault diagnosis system for transformer | |
CN204650177U (en) | A kind of wearable smart card for swimmer's status monitoring | |
CN205788655U (en) | A kind of integrated form first-aid alarm for electric power detection | |
CN203519125U (en) | Induction-type automatic-weighing paper pressing bench | |
CN109358346A (en) | A kind of service robot autonomous navigation chassis system | |
CN203364983U (en) | Overheating alarm | |
CN203706347U (en) | Multi-function alarm device | |
CN105698917A (en) | Infrasonic wave detection apparatus and detection method thereof | |
CN201812313U (en) | Attendance machine with anti-thief alarm function | |
CN201765655U (en) | Anti-stealing/losing wireless alarm device | |
CN203405897U (en) | Fire hazard alarm system for multilayer building | |
CN202924512U (en) | Elevator disaster voice alarm system | |
CN204066336U (en) | Protection against electric shock radar short-distance alarm device |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
GR01 | Patent grant | ||
GR01 | Patent grant |