CN203350346U - Potential indicator with temperature measuring function - Google Patents
Potential indicator with temperature measuring function Download PDFInfo
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- CN203350346U CN203350346U CN 201320441509 CN201320441509U CN203350346U CN 203350346 U CN203350346 U CN 203350346U CN 201320441509 CN201320441509 CN 201320441509 CN 201320441509 U CN201320441509 U CN 201320441509U CN 203350346 U CN203350346 U CN 203350346U
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- 238000012545 processing Methods 0.000 claims abstract description 47
- 238000000034 method Methods 0.000 claims abstract description 34
- 230000005540 biological transmission Effects 0.000 claims abstract description 11
- 230000005611 electricity Effects 0.000 claims description 34
- 229910052724 xenon Inorganic materials 0.000 claims description 4
- FHNFHKCVQCLJFQ-UHFFFAOYSA-N xenon atom Chemical compound [Xe] FHNFHKCVQCLJFQ-UHFFFAOYSA-N 0.000 claims description 4
- 238000001514 detection method Methods 0.000 abstract description 6
- 238000005259 measurement Methods 0.000 description 19
- 229910052754 neon Inorganic materials 0.000 description 12
- GKAOGPIIYCISHV-UHFFFAOYSA-N neon atom Chemical compound [Ne] GKAOGPIIYCISHV-UHFFFAOYSA-N 0.000 description 12
- 230000006870 function Effects 0.000 description 11
- 239000003990 capacitor Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000006378 damage Effects 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 208000033999 Device damage Diseases 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
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Abstract
The utility model discloses a potential indicator with temperature measuring function; the potential indicator comprises a housing (2), a voltage sensor (3), a temperature sensor (4), an alarm lamp unit (5), a temperature display unit (6), a voltage signal processing unit, a temperature signal processing unit (7), an alarm unit (8) and a power supply unit; if the voltage sensor (3) detects that the voltage of a high voltage charged body (1) is bigger than or equal to a conduction threshold value of a discharge tube, the alarm lamp unit (5) can emit alarm flashes; if the temperature sensor (4) detects that the temperature of the high voltage charged body (1) is bigger than a preset short circuit temperature critical value, the alarm unit (8) can send alarms, thereby confirming short circuit happening in the high voltage charged body (1); the potential indicator with temperature measuring function combines a short circuit faults detection device with a potential indicator, so not only whether a high voltage power transmission line carrying operation voltage or not can be indicated, but also a method of measuring line temperature is employed to determine whether short circuit happening or not in the high voltage power transmission line, thereby realizing direct fault detection to the high voltage power transmission line through low cost and simple operation.
Description
Technical field
The utility model relates to power transmission and distribution safety technique field, relates in particular to a kind of potential indicator with temp sensing function, mainly is applicable to 6～35KV switch cubicle.
Background technology
Along with constantly riseing of people's need for electricity, the application of high-voltage charged body (such as high voltage electric equipment, high pressure electrified cable etc.) in electric system is more and more extensive, thus staff's conducting transmission line is safeguarded and the overhaul of the equipments process in that the risk of high pressure electric shock occurs is also increasing.In order to avoid as possible occurring electric shock accidents, on high-voltage charged body, usually can be provided with potential indicator; Potential indicator is whether a kind of high-voltage charged body that intuitively demonstrates is with the indicative safety feature of working voltage, when high-voltage charged body during with working voltage, the display device of potential indicator can flash, thereby warning staff high-voltage charged body is in charging operation.
At present, in electric system, generally adopt three-phase electricity to carry out the delivery of electrical energy mode, each in three-phase electricity electricity is mutually respectively transmitted by a high-voltage charged body; Existing potential indicator mostly can to the transmission three-phase electricity in each mutually the electricity high-voltage charged body monitored, the primary structure of therefore existing potential indicator can comprise display device and three voltage sensors, each voltage sensor each in three-phase electricity one mutually the electricity high-voltage charged body detected, display device can show that respectively whether each electrification in high voltage of indication is with working voltage by three pilot lamp, thereby has reached warning staff's purpose.
All the time, the high pressure electric line being carried out to short-circuit detecting need to be connected to special short-circuit detecting circuit in the high pressure electric line and just can carry out; But this short-circuit detecting circuit complex structure, cost is higher, the life-span is shorter, and this detection method is strongly professional, complicated operation, have very strong hysteresis quality, can not under the normal power-up situation, directly carry out fault detect.
Summary of the invention
The utility model provides a kind of potential indicator with temp sensing function, whether not only can indicate the high pressure electric line with working voltage, and can determine the high pressure electric line fault that whether is short-circuited by the mode of measuring circuit temperature, thereby realized the high pressure electric line is directly carried out to fault detect with cheap cost, easy operation.
The purpose of this utility model is achieved through the following technical solutions:
A kind of potential indicator with temp sensing function, be connected with high-voltage charged body 1, comprise: housing 2, voltage sensor 3, temperature sensor 4, warning lamp unit 5, temperature display unit 6, voltage signal processing unit, processes temperature signal unit 7, alarm unit 8 and power supply unit;
Power supply unit is located at housing 2 inside, and with voltage sensor 3, temperature sensor 4, warning lamp unit 5, temperature display unit 6, voltage signal processing unit, processes temperature signal unit 7 and alarm unit 8, is electrically connected to respectively.
Preferably, described high-voltage charged body 1 is three, and every is responsible for the electricity mutually of one in the transmission three-phase electricity;
Described voltage sensor 3 is three, and each voltage sensor 3 each working voltage to a high-voltage charged body 1 is detected;
Described temperature sensor 4 is three, and each temperature sensor 4 each temperature to a high-voltage charged body 1 is detected.
Preferably, warning lamp unit 5 comprises at least one in rotary warning circuit for lamp, LED flasher circuit, xenon lamp stroboscopic circuit.
Preferably, described LED flasher circuit comprises three LEDs; Whether by voltage signal processing unit, each is electrically connected to a voltage sensor 3 each LED, thereby make a high-voltage charged body 1 of the corresponding indication of a LED with working voltage;
Preferably, the panel 21 of housing 2 front ends is divided into left and right two parts;
Preferably, described alarm unit 8 comprises hummer; On housing 2, the position of corresponding hummer is provided with reticulated cell.
The technical scheme provided by above-mentioned the utility model can be found out, the potential indicator with temp sensing function that the utility model embodiment provides detects the voltage of high-voltage charged body 1 by voltage sensor 3, and send voltage signal processing unit to and carry out the rectification processing, when the electrification in high voltage bulk voltage after rectification is processed is greater than the conducting threshold values of discharge tube in voltage signal processing unit, the discharge tube conducting, the warning lamp unit 5 be electrically connected to discharge tube sends alarm flashing, thereby warning staff high-voltage charged body 1 is with working voltage, to avoid occurring electric shock accidents; Simultaneously, the potential indicator with temp sensing function that the utility model embodiment provides can detect by temperature sensor 4 temperature of high-voltage charged body 1, and by alarm unit 8, given the alarm when the temperature of high-voltage charged body 1 is greater than predetermined short circuit temperature threshold value, thereby determine high-voltage charged body 1, be short-circuited; The utility model embodiment is integrated in one short trouble pick-up unit and potential indicator, whether not only can indicate the high pressure electric line with working voltage, and can determine the high pressure electric line fault that whether is short-circuited by the mode of measuring circuit temperature, thereby realized the high pressure electric line is directly carried out to fault detect with cheap cost, easy operation.
The accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme of the utility model embodiment, in below describing embodiment, the accompanying drawing of required use is briefly described, apparently, accompanying drawing in the following describes is only embodiment more of the present utility model, for those of ordinary skill in the art, under the prerequisite of not paying creative work, can also obtain other accompanying drawings according to these accompanying drawings.
The structural representation of the potential indicator that Fig. 1 provides for the utility model embodiment;
The integrated circuit structural representation of the potential indicator that Fig. 3 provides for the utility model embodiment;
The electrical block diagram of charged indicating section in the potential indicator that Fig. 4 provides for the utility model embodiment;
The electrical block diagram one of short circuit fault detection part in the potential indicator that Fig. 5 provides for the utility model embodiment;
The electrical block diagram two of short circuit fault detection part in the potential indicator that Fig. 6 provides for the utility model embodiment.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is clearly and completely described, obviously, described embodiment is only the utility model part embodiment, rather than whole embodiment.Based on embodiment of the present utility model, those of ordinary skills, not making under the creative work prerequisite the every other embodiment obtained, belong to protection domain of the present utility model.
The potential indicator with temp sensing function below the utility model embodiment provided is described in detail.
As shown in Figures 1 to 6, a kind of potential indicator with temp sensing function, with high-voltage charged body 1, be connected, its concrete structure can comprise: housing 2, voltage sensor 3, temperature sensor 4, warning lamp unit 5, temperature display unit 6, voltage signal processing unit, processes temperature signal unit 7, alarm unit 8 and power supply unit;
Power supply unit is located at housing 2 inside, and be electrically connected to voltage sensor 3, temperature sensor 4, warning lamp unit 5, temperature display unit 6, voltage signal processing unit, processes temperature signal unit 7 and alarm unit 8 respectively, thereby provide electric energy for voltage sensor 3, temperature sensor 4, warning lamp unit 5, temperature display unit 6, voltage signal processing unit, processes temperature signal unit 7 and alarm unit 8.
Particularly, this principle of work with the potential indicator of temp sensing function is as follows:
The voltage of 3 pairs of high-voltage charged bodies 1 of voltage sensor is detected, and sends the electrification in high voltage bulk voltage detected to voltage signal processing unit; Voltage signal processing unit comprises the rectification circuit be electrically connected to voltage sensor 3 and the discharge tube be electrically connected to warning lamp unit 5, and the electrification in high voltage bulk voltage that rectification circuit sends voltage sensor 3 is carried out the rectification processing, and is sent to discharge tube; When the electrification in high voltage bulk voltage after rectification is processed is more than or equal to the conducting threshold values of discharge tube, the discharge tube conducting, the warning lamp unit 5 be electrically connected to discharge tube sends alarm flashing, to indicate high-voltage charged body 1 with working voltage;
Processes temperature signal unit 7 detects the temperature of high-voltage charged bodies 1 by temperature sensor 4, and the temperature of high-voltage charged body 1 is sent to temperature display unit 6 is shown; Simultaneously, processes temperature signal unit 7 compares the temperature of high-voltage charged body 1 and predetermined short circuit temperature threshold value, when the temperature of high-voltage charged body 1 is greater than predetermined short circuit temperature threshold value, processes temperature signal unit 7 is controlled alarm unit 8 and is given the alarm, and to determine this temperature sensor 4 high-voltage charged body that detected 1, is short-circuited.
Wherein, each parts of this potential indicator with temp sensing function specifically can comprise following embodiment:
(1) housing 2: as depicted in figs. 1 and 2, housing 2 can adopt the alloy material that in prior art, intensity is higher to make, thereby can effectively avoid the circuit of housing 2 inside to damage owing to being subject to external impact; Housing 2 front ends can be provided with panel 21; Panel 21 can be divided into limit, left and right part, and the left part of panel 21 can be located in warning lamp unit 5, and temperature display unit 6 can be located at the right part of panel 21; Thereby can make line attendant and the people identify quickly and easily the measurement result of showing on panel 21.
(2) voltage sensor 3: as shown in Figure 3, this voltage sensor 3 can adopt in prior art, can obtain by commercial means any one for measuring the voltage sensor of high-tension electricity, for example: the CG11 series voltage sensor that this voltage sensor 3 can adopt Dalian Fenghe Power Tech Corp. Inc. to produce, this voltage sensor comprises primary side and secondary side, in specific embodiment of the utility model, the primary side of this voltage sensor is electrically connected to high-voltage charged body 1, and the secondary side of voltage sensor is electrically connected to voltage signal processing unit.It should be noted that, due to the utility model embodiment employing content that is prior art for the voltage sensor of measuring high-tension electricity, so no longer be described in detail in present specification.
(3) voltage signal processing unit: as shown in Figure 3 and Figure 4, this voltage signal processing unit can comprise the rectification circuit be electrically connected to voltage sensor 3 and the discharge tube be electrically connected to warning lamp unit 5; This rectification circuit can comprise the first voltage measurement diode D
u1, second voltage measuring diode D
u2, the first voltage measurement capacitor C
u1, the first voltage measurement resistance R
u1, tertiary voltage measuring resistance R
u3with the 4th voltage measurement resistance R
u4; What with voltage sensor 3, be electrically connected to is the input end of voltage signal processing unit, this input end respectively with the first voltage measurement diode D
u1negative electrode and second voltage measuring diode D
u2anode be electrically connected to, second voltage measuring diode D
u2negative electrode with the common ground end, be electrically connected to, the first voltage measurement diode D
u1anode respectively with the first voltage measurement capacitor C
u1an end, the first voltage measurement resistance R
u1an end and an end of discharge tube be electrically connected to, the first voltage measurement capacitor C
u1the other end and the first voltage measurement resistance R
u1the other end and the 4th voltage measurement resistance R
u4an end be in parallel and this sys node is electrically connected to the common ground end, the other end of discharge tube and the 4th voltage measurement resistance R
u4the other end be the output terminal of voltage signal processing unit, for being electrically connected to warning lamp unit 5, and provide the operation electric energy for it.
The discharge tube adopted in voltage signal processing unit can be any one in NE-2 of the prior art series neon tube, for example: can adopt the NE-2C neon tube; The measured electrification in high voltage bulk voltage of voltage sensor 3 after the rectification of rectification circuit in voltage signal processing unit is processed, the NE-2C neon tube of flowing through; If the electrification in high voltage bulk voltage after rectification is processed is less than the conducting threshold values of NE-2C neon tube, not conducting of NE-2C neon tube, warning lamp unit 5 can not send alarm flashing; If the electrification in high voltage bulk voltage after rectification is processed is more than or equal to the conducting threshold values of NE-2C neon tube, NE-2C neon tube conducting, the warning lamp unit 5 be electrically connected to the NE-2C neon tube sends alarm flashing, to indicate high-voltage charged body 1 with working voltage.
It should be noted that, the electrification in high voltage bulk voltage that the secondary side of voltage sensor 3 is exported, after the processing of above-mentioned rectification circuit, the NE-2C neon tube of flowing through again, in the time of can effectively avoiding appearing at high-voltage charged body 1 not with working voltage, warning lamp unit 5 mistakes are sent the situation of alarm flashing, effectively avoid the impact of interference voltage on potential indicator described in the utility model, guaranteed the operation accurately and reliably of potential indicator described in the utility model.
(4) the warning lamp unit 5: as shown in Figure 3 and Figure 4, this warning lamp unit 5 can adopt rotary warning circuit for lamp, LED(Light Emitting Diode, light emitting diode) one or more in flasher circuit or xenon lamp stroboscopic circuit, and can adopt one or more sets foregoing circuits simultaneously; But in actual applications,, in order to reduce production costs, to increase the service life, preferably select the LED flasher circuit; For example: as shown in Figure 4, corresponding warning lamp unit 5 can comprise the voltage measurement LED
u1; The voltage measurement LED
u1anode can be electrically connected to an end of discharge tube, the voltage measurement LED
u1negative electrode can with the 4th voltage measurement resistance R
u4an end be electrically connected to; When the discharge tube conducting, the voltage measurement LED
u1can send alarm flashing.Turn warning light circuit, LED flasher circuit, xenon lamp stroboscopic circuit and be common circuit of the prior art, so repeat no more in present specification owing to adopting in the utility model embodiment.When three high-voltage charged bodies 1 to the transmission three-phase electricity carry out live monitoring, because three voltage sensors 3 of needs carry out live monitoring to each high-voltage charged body 1 respectively, therefore corresponding voltage signal processing unit and warning lamp unit 5 also should be three groups, and circuit as shown in Figure 4 is preferably three groups.
(5) temperature sensor 4: as shown in Figure 3 and Figure 5, this temperature sensor 4 can adopt DS18B20 digital temperature sensor of the prior art (for example: DS18B20 digital temperature sensor * 1, DS18B20 digital temperature sensor * 2 and DS18B20 digital temperature sensor * 3) as shown in Figure 5; Due to DS18B20 digital temperature sensor easy-to-connect not only, and can be packaged into according to the difference of application scenario different outward appearances, therefore can be applied to the thermometric of the occasions such as telecommunication machine room, electric power machine room, cable trunking.In the utility model embodiment, potential indicator can be measured by temperature sensor 4 temperature of high-voltage charged body 1, thereby provides measurement data accurately for the temperature according to high-voltage charged body 1 judges its fault that whether is short-circuited.It should be noted that, because the utility model embodiment adopts the content that the DS18B20 digital temperature sensor is prior art, so no longer be described in detail in present specification.
(6) temperature display unit 6; As shown in Figure 3 and Figure 6, this temperature display unit 6 can adopt in prior art one or more groups to take the digital pipe display circuit that 7 segment numeral pipes and/or 8 segment numeral pipes are core; For example: can adopt as shown in Figure 6 by the charactron of a 74AC573SC chip, three groups of SM220281 models, Res Pack4 row and organize the digital pipe display circuit that R4 and other wires form.After temperature sensor 4 is measured the temperature of high-voltage charged body 1, the temperature that digital pipe display circuit demonstrates high-voltage charged body 1 in time can be controlled in processes temperature signal unit 7, whether the personnel of line upkeep can directly determine high-voltage charged body 1 according to the temperature of the high-voltage charged body 1 shown on digital pipe display circuit and be short-circuited, also can analyze the temperature changing trend of high-voltage charged body 1, and then determine high-voltage charged body 1 according to this temperature changing trend and whether be short-circuited; This method for detecting short circuit is efficient and convenient, technical difficulty is low, practical, thereby be very suitable for the Preliminary detection of high-voltage charged body 1 short trouble.
(7) alarm unit 8: as shown in Figure 3 and Figure 6, this alarm unit 8 can adopt in prior art take the hummer phonation circuit that hummer is core; For example: can adopt the hummer phonation circuit formed by the triode Q1 of a hummer LS1, a 2N3904 model, a resistance R 1 and other wires as shown in Figure 6.For the sound that makes hummer, more clearly from housing 1 internal communication to housing 1 outside, on housing 2, the position of corresponding hummer preferably is provided with the reticulated cell consisted of a plurality of through holes.When the temperature of measuring high-voltage charged body 1 when temperature sensor 4 is greater than predetermined short circuit temperature threshold value, the hummer alarm of can sounding, thereby the personnel that can make the line upkeep in alarm unit 8 surroundings can learn high-voltage charged body 1 fault that is short-circuited in time, and carry out rapidly individual and the safety prevention measure of equipment, to reduce the risk of generation personal injury or device damage.
(8) the processes temperature signal unit 7: this processes temperature signal unit 7 can adopt in prior art any one to take the control circuit that the process chip such as single-chip microcomputer or microcontroller are core; For example: as shown in Figure 5 and Figure 6, this processes temperature signal unit 7 can adopt take the control circuit that PIC16F877A-I/P model embedded microcontroller is core; Embedded microcontroller PIC16F877A-I/P can be electrically connected to DS18B20 digital temperature sensor * 1, DS18B20 digital temperature sensor * 2, DS18B20 digital temperature sensor * 3 respectively, thereby realizes temperature sensor 4 is control effectively; Embedded microcontroller PIC16F877A-I/P can organize the digital pipe display circuit that R4 and other wires form with charactron by a 74AC573SC chip, three groups of SM220281 models, Res Pack4 row and be electrically connected to, thereby realizes temperature display unit 6 is control effectively; Embedded microcontroller PIC16F877A-I/P can be electrically connected to the hummer phonation circuit that the triode Q1 by a hummer LS1, a 2N3904 model, a resistance R 1 and other wires form, thereby realizes alarm unit 8 is control effectively; In addition, this control circuit can comprise clock circuit, reset circuit and memory circuit etc., but be content of the prior art owing to take clock circuit, reset circuit and the memory circuit that PIC16F877A-I/P model embedded microcontroller is core, therefore repeat no more in present specification.
Can preset a short circuit temperature threshold value in corresponding memory circuit, embedded microcontroller PIC16F877A-I/P can obtain by temperature sensor 4 temperature of high-voltage charged body 1, and can show this temperature by temperature display unit 6, short circuit temperature threshold value default in this temperature and memory circuit can be compared simultaneously, when this temperature is greater than default short circuit temperature threshold value, embedded microcontroller PIC16F877A-I/P can control alarm unit 8 and send chimes of doom.It should be noted that, the short circuit temperature threshold value can be determined in conjunction with prior art and by test of many times, repeat no more in the application.
For the content, purpose and the advantage that make technical solutions of the utility model is clearer, the high-voltage charged body 1 that the utility model embodiment is applied to the transmission three-phase electricity of below take is described in detail as example.
Embodiment mono-
In the art, three-phase electricity has (A phase, B phase, C phase) usually, (L1 phase, L2 phase, L3 phase) or (U phase, V phase, W phase) three kinds of calls, in present specification, with (A phase, B phase, C phase), this call is described, but this does not form restriction of the present utility model.
As shown in Figures 1 to 6, a kind of potential indicator with temp sensing function, its concrete structure can comprise: housing 2, voltage sensor 3, temperature sensor 4, warning lamp unit 5, temperature display unit 6, voltage signal processing unit, processes temperature signal unit 7, alarm unit 8 and power supply unit; The concrete syndeton of these parts can be with reference to the content of technique scheme, and its special character is:
High-voltage charged body 1 is three, and every is responsible for the electricity mutually of one in the transmission three-phase electricity; As shown in Figure 3,1a means to transmit the high-voltage charged body 1 of A phase in three-phase electricity, and 1b means to transmit the high-voltage charged body 1 of B phase in three-phase electricity, and 1c means to transmit the high-voltage charged body 1 of C phase in three-phase electricity.
Voltage signal processing unit as shown in Figure 4 and warning lamp unit 5 also can be three groups, and every group of voltage signal processing unit respectively is electrically connected to a voltage sensor 3, thereby makes each and voltage signal processing unit whether be used in conjunction with warning lamp unit 5 corresponding indication high-voltage charged body 1 with working voltage; That is to say, one group of voltage signal processing unit (can be labeled as La) is electrically connected to the voltage sensor 3 that is labeled as Va, and the warning lamp unit 5(be used in conjunction with this group voltage signal processing unit La can be labeled as Ja) whether be responsible for indication 1a with working voltage; One group of voltage signal processing unit (can be labeled as Lb) is electrically connected to the voltage sensor 3 that is labeled as Vb, and the warning lamp unit 5(be used in conjunction with this group voltage signal processing unit Lb can be labeled as Jb) whether be responsible for indication 1b with working voltage; One group of voltage signal processing unit (can be labeled as Lc) is electrically connected to the voltage sensor 3 that is labeled as Vc, and the warning lamp unit 5(be used in conjunction with this group voltage signal processing unit Lc can be labeled as Jc) whether be responsible for indication 1c with working voltage.
The panel 21 of housing 2 front ends is divided into left and right two parts; Panel 21 left parts laterally are provided with three LED and show hole; Three LED of warning lamp unit 5 respectively are arranged at LED and show in hole, and each LED shows on the panel 21 of below, hole that each sign has in three-phase electricity the identifier 9 of electricity mutually; It is which root high-voltage charged body 1 is with working voltage that these identifiers 9 can make line attendant confirm easily; Panel 21 right parts vertically are provided with three charactron forms, and three groups of charactrons of temperature display unit 6 respectively are arranged in a charactron form, and on the panel 21 in each charactron form left side, each sign has in three-phase electricity the identifier 9 of electricity mutually; These identifiers 9 can make line attendant confirm that easily which root high-voltage charged body 1 is the fault that is short-circuited.
Every group of voltage signal processing unit (for example: be labeled as the La voltage signal processing unit) is labeled as the voltage sensor 3 of Va from this example of voltage sensor 3(be attached thereto) obtain the electrification in high voltage bulk voltage, and carry out the rectification processing, when the electrification in high voltage bulk voltage after rectification is processed is more than or equal to the conducting threshold values of NE-2C neon tube, the conducting of NE-2C neon tube, be labeled as the warning lamp unit 5 of Ja in warning lamp unit this example of 5(be electrically connected to this NE-2C neon tube) send alarm flashing, to indicate in corresponding with it this example of high-voltage charged body 1(, be 1a) with working voltage.
Processes temperature signal unit 7 can adopt in prior art take the control circuit that PIC16F877A-I/P model embedded microcontroller is core, embedded microcontroller PIC16F877A-I/P can be by each temperature sensor 4(for example: the temperature sensor 4 that is labeled as Ca) obtaining in corresponding with it this example of high-voltage charged body 1(is 1a) temperature, and can show this temperature by the charactron (being labeled as the charactron of Sa in this example) of correspondence with it; Simultaneously, embedded microcontroller PIC16F877A-I/P can compare short circuit temperature threshold value default in this temperature and memory circuit, when this temperature is greater than default short circuit temperature threshold value, embedded microcontroller PIC16F877A-I/P can control hummer (for example: hummer LS1) as shown in Figure 6 and send warning.
Visible, the utility model embodiment not only simple in structure, with low cost, conveniently carry out installing/dismounting, and can show intuitively rapidly the temperature regime of the current test point of tested electrified body, thereby can reflect in time the tested electrified body fault that whether is short-circuited, effectively reduce the risk that security incident occurs, also reduced equipment and burnt because of short circuit the loss caused simultaneously.
The above; it is only preferably embodiment of the utility model; but protection domain of the present utility model is not limited to this; anyly be familiar with those skilled in the art in the technical scope that the utility model discloses; the variation that can expect easily or replacement, within all should being encompassed in protection domain of the present utility model.Therefore, protection domain of the present utility model should be as the criterion with the protection domain of claims.
Claims (6)
1. the potential indicator with temp sensing function, with high-voltage charged body (1), be connected, it is characterized in that, comprising: housing (2), voltage sensor (3), temperature sensor (4), warning lamp unit (5), temperature display unit (6), voltage signal processing unit, processes temperature signal unit (7), alarm unit (8) and power supply unit;
Warning lamp unit (5) is located on the panel (21) of housing (2) front end, and the voltage signal processing unit inner with being located at housing (2) is electrically connected to; It is upper that voltage sensor (3) is located at high-voltage charged body (1), and the voltage signal processing unit inner with being located at housing (2) is electrically connected to; Voltage signal processing unit comprises the rectification circuit be electrically connected to voltage sensor (3) and the discharge tube be electrically connected to warning lamp unit (5);
Temperature display unit (6) is located on the panel (21) of housing (2) front end, and the processes temperature signal unit (7) inner with being located at housing (2) is electrically connected to; Processes temperature signal unit (7) temperature sensor (4) outside with being located at housing (2) is electrically connected to, and temperature sensor (4) contacts with the extexine of high-voltage charged body (1); Alarm unit (8) is located at housing (2) inside, and is electrically connected to processes temperature signal unit (7);
Power supply unit is located at housing (2) inside, and with voltage sensor (3), temperature sensor (4), warning lamp unit (5), temperature display unit (6), voltage signal processing unit, processes temperature signal unit (7) and alarm unit (8), is electrically connected to respectively.
2. potential indicator according to claim 1, is characterized in that, described high-voltage charged body (1) is three, and every is responsible for the electricity mutually of one in the transmission three-phase electricity;
Described voltage sensor (3) is three, and each working voltage to a high-voltage charged body (1) of each voltage sensor (3) is detected;
Described temperature sensor (4) is three, and each temperature to a high-voltage charged body (1) of each temperature sensor (4) is detected.
3. potential indicator according to claim 2, is characterized in that, warning lamp unit (5) comprise at least one in rotary warning circuit for lamp, LED flasher circuit, xenon lamp stroboscopic circuit.
4. potential indicator according to claim 3, is characterized in that, described LED flasher circuit comprises three LEDs; Whether by voltage signal processing unit, each is electrically connected to a voltage sensor (3) each LED, thereby make a LED high-voltage charged body of corresponding indication (1) with working voltage;
Temperature display unit (6) comprises three groups of charactrons; By processes temperature signal unit (7), each is electrically connected to a temperature sensor (4) every group of charactron, thereby makes the corresponding temperature that shows a high-voltage charged body (1) of one group of charactron.
5. potential indicator according to claim 4, is characterized in that, the panel (21) of housing (2) front end is divided into left and right two parts;
Panel (21) left part laterally is provided with three LED and shows hole; Three LED of warning lamp unit (5) respectively are arranged at LED and show in hole, and each LED shows that upper each sign of panel (21) of below, hole has in three-phase electricity the identifier (9) of electricity mutually;
Panel (21) right part vertically is provided with three charactron forms, three groups of charactrons of temperature display unit (6) respectively are arranged in a charactron form, and upper each sign of the panel (21) in each charactron form left side has in three-phase electricity the identifier (9) of electricity mutually.
6. according to the described potential indicator of any one in claim 1 to 5, it is characterized in that, described alarm unit (8) comprises hummer; The position of the upper corresponding hummer of housing (2) is provided with reticulated cell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320441509 CN203350346U (en) | 2013-07-23 | 2013-07-23 | Potential indicator with temperature measuring function |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320441509 CN203350346U (en) | 2013-07-23 | 2013-07-23 | Potential indicator with temperature measuring function |
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| CN203350346U true CN203350346U (en) | 2013-12-18 |
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| CN 201320441509 Expired - Fee Related CN203350346U (en) | 2013-07-23 | 2013-07-23 | Potential indicator with temperature measuring function |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110061741A (en) * | 2018-01-19 | 2019-07-26 | 株式会社索思未来 | Semiconductor integrated circuit |
| CN114137285A (en) * | 2021-11-24 | 2022-03-04 | 广东电网有限责任公司 | Charged display |
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2013
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110061741A (en) * | 2018-01-19 | 2019-07-26 | 株式会社索思未来 | Semiconductor integrated circuit |
| CN114137285A (en) * | 2021-11-24 | 2022-03-04 | 广东电网有限责任公司 | Charged display |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131218 Termination date: 20180723 |
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| CF01 | Termination of patent right due to non-payment of annual fee |