CN217360023U - Over-temperature early warning device for terminal row of electric energy meter and electric energy meter - Google Patents
Over-temperature early warning device for terminal row of electric energy meter and electric energy meter Download PDFInfo
- Publication number
- CN217360023U CN217360023U CN202220888513.0U CN202220888513U CN217360023U CN 217360023 U CN217360023 U CN 217360023U CN 202220888513 U CN202220888513 U CN 202220888513U CN 217360023 U CN217360023 U CN 217360023U
- Authority
- CN
- China
- Prior art keywords
- electric energy
- energy meter
- temperature
- temperature sensor
- terminal
- 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
Images
Landscapes
- Fire-Detection Mechanisms (AREA)
Abstract
The utility model discloses an excess temperature early warning device and electric energy meter of electric energy meter terminal row, the excess temperature early warning device of electric energy meter terminal row is applied to the electric energy meter, and the excess temperature early warning device of electric energy meter terminal row includes first temperature sensor, second temperature sensor, MCU treater and alarm, and first temperature sensor locates in the electric energy meter, and first temperature sensor locates on the electric energy meter terminal row; the second temperature sensor is arranged outside the electric energy meter; the MCU processor is electrically connected with the first temperature sensor and the second temperature sensor respectively; the alarm is electrically connected with the MCU processor. The utility model discloses can carry out accurate and timely early warning to the terminal row temperature abnormity of electric energy meter, avoid the terminal row kneck contact failure of electric energy meter and cause dangerous accidents such as ammeter burnout, conflagration.
Description
Technical Field
The utility model relates to an electric energy meter technical field, in particular to excess temperature early warning device and electric energy meter that electric energy meter terminal was arranged.
Background
With the deep construction of power grids, the wide popularization of electric energy meters and the continuous progress of city development in recent years, residential districts are continuously increased, the power load is increased, and the power utilization environment is more complex. Due to the fact that the screws of the electric energy meter are not tightened or loosened in the installation or operation process, poor contact at the connector of the terminal row of the electric energy meter is prone to being caused, the impedance value of the connector of the terminal row of the electric energy meter is increased, the terminal row of the electric energy meter is prone to generating heat, the temperature of the terminal row of the electric energy meter is prone to rising, and then dangerous accidents such as electric meter burning and fire are prone to being caused.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing an excess temperature early warning device and electric energy meter that electric energy meter terminal was arranged, the terminal row kneck contact failure who aims at solving the electric energy meter easily causes the technical problem of dangerous accidents such as conflagration.
In order to achieve the purpose, the utility model provides an over-temperature early warning device of an electric energy meter terminal row, which is applied to an electric energy meter and comprises a first temperature sensor, a second temperature sensor, an MCU processor and an alarm,
the first temperature sensor is arranged in the electric energy meter, and the first temperature sensor is arranged on the terminal block of the electric energy meter, so that the first temperature sensor can detect the temperature of the terminal block of the electric energy meter;
the second temperature sensor is arranged outside the electric energy meter, so that the second temperature sensor can detect the ambient temperature of the terminal row of the electric energy meter;
the MCU processor is electrically connected with the first temperature sensor and the second temperature sensor respectively, so that the MCU processor receives the temperature of the terminal strip and the ambient temperature respectively, and determines whether the temperature of the terminal strip of the electric energy meter is abnormal or not at the current ambient temperature according to the temperature of the terminal strip and the ambient temperature;
the alarm is electrically connected with the MCU processor, so that when the MCU processor judges that the temperature of the terminal row of the electric energy meter is abnormal, the alarm outputs an early warning prompt.
Optionally, the number of the first temperature sensors is multiple, and each of the first temperature sensors is arranged on each of the connection terminals of the electric energy meter terminal row in a one-to-one correspondence manner.
Optionally, each of the first temperature sensors is attached to the surface of each of the connection terminals in a one-to-one correspondence manner.
Optionally, each of the connection terminals is provided with an auxiliary mounting hole, and each of the first temperature sensors is correspondingly inserted into each of the auxiliary mounting holes.
Optionally, the over-temperature early warning device for the terminal row of the electric energy meter further comprises an analog multiplexer chip, a first input end of the analog multiplexer chip is electrically connected with the first temperature sensor, a second input end of the analog multiplexer chip is electrically connected with the second temperature sensor, and an output end of the analog multiplexer chip is electrically connected with the MCU processor.
Optionally, the alarm is a buzzer horn and/or an LED indicator lamp.
Optionally, the alarm is arranged outside the electric energy meter.
Optionally, the first temperature sensor is an NTC thermistor or a PTC thermistor, and the second temperature sensor is an NTC thermistor or a PTC thermistor.
Optionally, the over-temperature early warning device of the electric energy meter terminal row further comprises a power supply, the power supply is electrically connected with the MCU processor, so that the power supply supplies power to the MCU processor, and the power supply further supplies power to the first temperature sensor, the second temperature sensor and the alarm through the MCU processor.
The utility model also provides an electric energy meter, electric energy meter includes as above arbitrary the excess temperature early warning device that the electric energy meter terminal was arranged.
The utility model discloses a locate the first temperature sensor in the electric energy meter, and first temperature sensor locates on the electric energy meter terminal row, so that first temperature sensor adopts the contact direct measurement electric energy meter terminal row temperature, and through locating the second temperature sensor outside the electric energy meter, so that the second temperature sensor detects the ambient temperature that electric energy meter terminal row was located, then through electrically connecting MCU treater with first temperature sensor and second temperature sensor respectively, so that MCU treater receives terminal row temperature and ambient temperature respectively, and according to terminal row temperature and ambient temperature, confirm whether there is temperature anomaly in the electric energy meter terminal row under current ambient temperature, and then electrically connect with MCU treater through the alarm, so that when judging that electric energy meter terminal row has temperature anomaly, the alarm outputs the early warning suggestion, thereby realize the accuracy of early warning to electric energy meter terminal row temperature anomaly, the dangerous accidents such as ammeter burnout and fire caused by poor contact at the terminal strip interface of the electric energy meter are avoided, and further the property and life safety of users are protected.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
Fig. 1 is a schematic diagram of a hardware structure of an over-temperature warning device of an electric energy meter terminal row according to an embodiment of the present invention.
The reference numbers indicate:
the objects, features and advantages of the present invention will be further described with reference to the accompanying drawings.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
It should be noted that, if directional indications (such as upper, lower, left, right, front and rear … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indications are changed accordingly.
In addition, if there is a description relating to "first", "second", etc. in the embodiments of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.
The present invention is described in the directions "up", "down", "left", "right", etc. with reference to the direction shown in fig. 1, and is only used to explain the relative positional relationship between the components in the posture shown in fig. 1, and if the specific posture is changed, the directional indication is also changed accordingly.
Due to the fact that screws of the electric energy meter are not tightened or loosened in the installation or operation process, poor contact at the connector of the terminal row of the electric energy meter is prone to being caused, the impedance value of the connector of the terminal row of the electric energy meter is increased, the terminal row of the electric energy meter is prone to generating heat, the temperature of the terminal row of the electric energy meter is prone to rising, and then dangerous accidents such as electric meter burning and fire disasters are prone to being caused.
Based on this, the embodiment of the utility model provides an excess temperature early warning device 100 that electric energy meter terminal was arranged is proposed.
As shown in fig. 1, in an embodiment of the present invention, an over-temperature early warning device 100 of a terminal row of an electric energy meter, where the over-temperature early warning device 100 of the terminal row of the electric energy meter is applied to the electric energy meter, the over-temperature early warning device 100 of the terminal row of the electric energy meter includes a first temperature sensor 1, a second temperature sensor 2, an MCU processor 3 and an alarm 4, the first temperature sensor 1 is disposed in the electric energy meter, and the first temperature sensor 1 is disposed on the terminal row of the electric energy meter, so that the first temperature sensor 1 can detect a terminal row temperature of the terminal row of the electric energy meter; the second temperature sensor 2 is arranged outside the electric energy meter, so that the second temperature sensor 2 can detect the ambient temperature of the terminal row of the electric energy meter; the MCU processor 3 is respectively and electrically connected with the first temperature sensor 1 and the second temperature sensor 2, so that the MCU processor 3 can respectively receive the temperature of the terminal strip and the ambient temperature, and determine whether the temperature of the terminal strip of the electric energy meter is abnormal or not at the current ambient temperature according to the temperature of the terminal strip and the ambient temperature; the alarm 4 is electrically connected with the MCU processor 3, so that when the MCU processor 3 judges that the temperature of the terminal row of the electric energy meter is abnormal, the alarm 4 outputs an early warning prompt.
In this embodiment, the chip model of the MCU (Microcontroller Unit) processor may be ARM 11.
In the present embodiment, the alarm 4 may be a buzzer speaker 41 and/or an LED (Light Emitting Diode) indicator 42.
In this embodiment, since a certain amount of heat loss may exist in heat conduction between the terminal row (generally made of copper) of the electric energy meter and the temperature sensor, that is, the temperature value detected by the first temperature sensor 1 may be different from the actual heating value of the terminal row of the electric energy meter, the temperature value detected by the temperature sensor needs to be compensated. It should be noted that, if the open-loop blind compensation method is adopted to compensate the temperature value detected by the temperature sensor, at a specific temperature, the open-loop blind compensation method can accurately compensate the temperature value detected by the temperature sensor, so as to accurately predict the actual heating value of the terminal row of the electric energy meter, but when the external ambient temperature changes and the ambient temperature is higher, the heat dissipation amount conducted between the terminal row of the electric energy meter and the temperature sensor is smaller, and the difference between the temperature value detected by the first temperature sensor 1 and the actual heating value of the terminal row of the electric energy meter becomes smaller. The lower the ambient temperature is, the larger the heat loss amount conducted between the terminal row of the electric energy meter and the temperature sensor is, and the difference between the temperature value detected by the first temperature sensor 1 and the actual heating value of the terminal row of the electric energy meter becomes larger. Therefore, compensation is performed in an open-loop blind compensation mode, and the external environment temperature cannot be judged, so that the temperature measurement error becomes large, and the over-temperature early warning device 100 of the electric energy meter terminal row gives a false alarm or does not give a false alarm to the temperature abnormity alarm of the electric energy meter terminal row. In the embodiment, the second temperature sensor 2 is arranged outside the electric energy meter, so that the second temperature sensor 2 can detect the ambient temperature of the terminal row of the electric energy meter, the dual sampling of the terminal row temperature and the ambient temperature value is realized, the compensation value is adjusted according to the measured ambient temperature, the purpose of measuring the terminal row temperature of the electric energy meter in a closed loop manner is achieved, the sampled external ambient temperature participates in compensation, the detection accuracy of the terminal row temperature at different ambient temperatures is ensured, the problem that the open loop compensation temperature error is large is solved, the accurate and timely early warning of the terminal row temperature abnormity of the electric energy meter is realized, the dangerous accidents such as electric meter burnout and fire caused by poor contact at the terminal row interface of the electric energy meter are avoided, and the property and life safety of a user are protected.
In the embodiment, the first temperature sensor 1 is arranged in the electric energy meter, the first temperature sensor 1 is arranged on the terminal row of the electric energy meter, so that the first temperature sensor 1 directly measures the temperature of the terminal row of the electric energy meter in a contact manner, the second temperature sensor 2 is arranged outside the electric energy meter, so that the second temperature sensor 2 detects the ambient temperature of the terminal row of the electric energy meter, the MCU processor 3 is respectively and electrically connected with the first temperature sensor 1 and the second temperature sensor 2, so that the MCU processor 3 respectively receives the temperature of the terminal row and the ambient temperature, determines whether the temperature of the terminal row of the electric energy meter is abnormal at the current ambient temperature according to the temperature of the terminal row and the ambient temperature, and is electrically connected with the MCU processor 3 through the alarm 4, so that when the MCU processor 3 judges that the temperature of the terminal row of the electric energy meter is abnormal, alarm 4 outputs the early warning suggestion to the realization is to the unusual accurate early warning of electric energy meter terminal row temperature, avoids the terminal row kneck contact failure of electric energy meter and causes dangerous accidents such as ammeter burnout, conflagration, and then protects user's property and life safety.
In a possible embodiment, the number of the first temperature sensors 1 is multiple, and the first temperature sensors 1 are arranged on the connecting terminals of the electric energy meter terminal row in a one-to-one correspondence manner, so that the temperature value of each connecting terminal of the electric energy meter terminal row can be conveniently detected, accidents of electric meter burning and fire disasters caused by temperature abnormity of one connecting terminal of the electric energy meter terminal row can be avoided, and early warning for temperature abnormity of the electric energy meter terminal row can be accurately realized.
Furthermore, the first temperature sensors 1 are correspondingly attached to the surfaces of the connecting terminals one by one.
In this embodiment, the first temperature sensors 1 may be attached to the surface of each connection terminal in a one-to-one correspondence manner by using an elastic adhesive or a suction cup.
In the embodiment, the first temperature sensors 1 are attached to the surfaces of the wiring terminals in a one-to-one correspondence manner, so that the structure is simple, and the structural cost of the over-temperature early warning device 100 for the terminal row of the electric energy meter is reduced.
Furthermore, each wiring terminal has all been seted up supplementary mounting hole, and each temperature sensor 1 one-to-one is worn to locate each supplementary mounting hole.
In this embodiment, the first temperature sensors 1 may be inserted into the auxiliary mounting holes in a one-to-one correspondence manner by means of screw-thread engagement or the like.
In the embodiment, the first temperature sensors 1 are arranged in the auxiliary mounting holes of the connecting terminals in a one-to-one corresponding manner, so that the mounting and dismounting are convenient, the complexity of mounting or dismounting the over-temperature early warning device 100 of the electric energy meter terminal row is reduced, and the follow-up maintenance of the over-temperature early warning device 100 of the electric energy meter terminal row is facilitated.
In a possible embodiment, the over-temperature warning device 100 for a terminal bank of an electric energy meter further includes an analog multiplexer chip 5, a first input end of the analog multiplexer chip 5 is electrically connected to the first temperature sensor 1, a second input end of the analog multiplexer chip 5 is electrically connected to the second temperature sensor 2, and an output end of the analog multiplexer chip 5 is electrically connected to the MCU processor 3.
In this embodiment, the analog multiplexer chip 5 may be BL1551 SC 70-6.
In this embodiment, there may be a case where the number of AD (Analog-to-Digital) sampling pins of the MCU processor 3 is insufficient, for example, the number of the first temperature sensors 1 is 4, the number of the second temperature sensors 2 is 1, and the number of the AD sampling pins of the MCU processor 3 is 3 in total, and the number of the AD sampling pins is less than 5, at this time, the number of the AD (Analog-to-Digital) sampling pins of the MCU processor 3 is insufficient. And simulation multiple choice chip 5 can handle the multichannel signal through the mode of timesharing processing, possess the AD sampling pin of a large number of ports simultaneously, therefore this embodiment is connected with first temperature sensor 1 electricity through the first input with simulation multiple choice chip 5, the second input of simulation multiple choice chip 5 is connected with second temperature sensor 2 electricity, the output and the MCU treater 3 electricity of simulation multiple choice chip 5 are connected, thereby sample environment temperature and terminal row temperature through simulation multiple choice chip 5 earlier, pack into signal transmission to MCU treater 3 all the way with the multichannel temperature signal of sampling again, the AD sampling pin that solves MCU treater 3 is not enough, lead to the technical problem that can't carry out the sampling to the multichannel sensor signal.
In one possible embodiment, the alarm 4 is provided outside the electric energy meter.
In the present embodiment, the alarm 4 may be a buzzer speaker 41 and/or an LED indicator 42. In the embodiment, the alarm 4 is arranged outside the electric energy meter, so that a user can more intuitively and clearly perceive the early warning prompt output by the alarm 4.
In a possible embodiment, the first Temperature sensor 1 is an NTC (Negative Temperature Coefficient) thermistor or a PTC (Positive Temperature Coefficient) thermistor, and the second Temperature sensor 2 is an NTC thermistor or a PTC thermistor, so that the structure is simple, and the structural cost of the over-Temperature warning device 100 of the electric energy meter terminal row is further reduced.
In a possible implementation manner, the over-temperature early warning device 100 of the electric energy meter terminal row further comprises a power supply 6, the power supply 6 is electrically connected with the MCU processor 3, so that the power supply 6 supplies power to the MCU processor 3, and the power supply 6 further supplies power to the first temperature sensor 1, the second temperature sensor 2 and the alarm 4 through the MCU processor 3, thereby facilitating the maintenance of the normal operation of the over-temperature early warning device 100 of the electric energy meter terminal row.
The embodiment of the utility model provides a still provide an electric energy meter, this electric energy meter includes as above arbitrary the terminal excessive temperature early warning device 100 of arranging of electric energy meter.
The above is only the preferred embodiment of the present invention, not so limiting the patent scope of the present invention, all of which are in the utility model discloses a conceive, utilize the equivalent structure transform that the content of the specification and the attached drawings did, or directly/indirectly use all to include in other relevant technical fields the patent protection scope of the present invention.
Claims (10)
1. The over-temperature early warning device of the electric energy meter terminal row is characterized by being applied to an electric energy meter and comprising a first temperature sensor, a second temperature sensor, an MCU processor and an alarm,
the first temperature sensor is arranged in the electric energy meter, and the first temperature sensor is arranged on the terminal row of the electric energy meter, so that the first temperature sensor can detect the temperature of the terminal row of the electric energy meter;
the second temperature sensor is arranged outside the electric energy meter, so that the second temperature sensor can detect the ambient temperature of the terminal row of the electric energy meter;
the MCU processor is electrically connected with the first temperature sensor and the second temperature sensor respectively, so that the MCU processor receives the temperature of the terminal strip and the ambient temperature respectively, and determines whether the temperature of the terminal strip of the electric energy meter is abnormal or not at the current ambient temperature according to the temperature of the terminal strip and the ambient temperature;
the alarm is electrically connected with the MCU processor, so that when the MCU processor judges that the temperature of the terminal row of the electric energy meter is abnormal, the alarm outputs an early warning prompt.
2. The device for warning of excess temperature in a terminal block of an electric energy meter according to claim 1, wherein the first temperature sensors are provided in plurality, and each of the first temperature sensors is provided on each of the terminals of the terminal block of the electric energy meter in a one-to-one correspondence.
3. The overheat warning apparatus for a terminal block of an electric energy meter according to claim 2, wherein each of said first temperature sensors is attached to a surface of each of said terminal blocks in a one-to-one correspondence.
4. The over-temperature early warning device of the terminal row of the electric energy meter according to claim 2, wherein each terminal is provided with an auxiliary mounting hole, and each first temperature sensor is correspondingly arranged in each auxiliary mounting hole in a penetrating manner.
5. The over-temperature warning device for the electric energy meter terminal block according to claim 1, further comprising an analog multiplexer chip, wherein a first input terminal of the analog multiplexer chip is electrically connected to the first temperature sensor, a second input terminal of the analog multiplexer chip is electrically connected to the second temperature sensor, and an output terminal of the analog multiplexer chip is electrically connected to the MCU processor.
6. The over-temperature early warning device for the terminal row of the electric energy meter according to claim 1, wherein the alarm is a buzzer horn and/or an LED indicator lamp.
7. The over-temperature warning device for the terminal row of the electric energy meter according to claim 6, wherein the alarm is arranged outside the electric energy meter.
8. The device according to claim 1, characterized in that said first temperature sensor is an NTC thermistor or a PTC thermistor and said second temperature sensor is an NTC thermistor or a PTC thermistor.
9. The over-temperature early warning device for the terminal bank of the electric energy meter according to claim 1, further comprising a power supply electrically connected with the MCU processor for supplying power to the MCU processor, wherein the power supply further supplies power to the first temperature sensor, the second temperature sensor and the alarm through the MCU processor.
10. An electric energy meter, characterized in that it comprises an over-temperature warning device of a terminal bank of an electric energy meter according to any of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220888513.0U CN217360023U (en) | 2022-04-15 | 2022-04-15 | Over-temperature early warning device for terminal row of electric energy meter and electric energy meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220888513.0U CN217360023U (en) | 2022-04-15 | 2022-04-15 | Over-temperature early warning device for terminal row of electric energy meter and electric energy meter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217360023U true CN217360023U (en) | 2022-09-02 |
Family
ID=83055167
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220888513.0U Active CN217360023U (en) | 2022-04-15 | 2022-04-15 | Over-temperature early warning device for terminal row of electric energy meter and electric energy meter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217360023U (en) |
-
2022
- 2022-04-15 CN CN202220888513.0U patent/CN217360023U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US10066999B2 (en) | System and method for monitoring exceptional watt hour meter terminal temperature | |
| JP2011013067A (en) | Electric meter | |
| CN217360023U (en) | Over-temperature early warning device for terminal row of electric energy meter and electric energy meter | |
| CN214173453U (en) | Temperature and pressure integrated sensor | |
| CN217605150U (en) | Disconnection diagnosis system of thermal resistor | |
| CN207675961U (en) | A kind of metal detector | |
| CN212011475U (en) | Photovoltaic wiring plug with temperature display | |
| CN201188117Y (en) | Infrared temperature measurement induction neon-electroscope | |
| CN203148615U (en) | Digital display pressure gauge | |
| CN2800276Y (en) | Hand-held pure water quality detector | |
| CN219871665U (en) | Ear hanging wire testing device | |
| CN220270640U (en) | Real-time temperature detection module of NTC resistance of converter power unit | |
| CN218584217U (en) | Electronic thermometer capable of improving measurement accuracy | |
| CN218726846U (en) | Water immersion detection device | |
| CN218629957U (en) | Portable detection electronic pen | |
| CN216483562U (en) | Temperature sensor for electrical equipment | |
| CN216524434U (en) | Temperature sensor with alarm prompt function | |
| CN213985446U (en) | FBG temperature management system | |
| CN216050012U (en) | Temperature and pressure sensor | |
| CN214760576U (en) | Graphene glass electric kettle temperature detection module and graphene glass electric kettle thereof | |
| CN213180119U (en) | Explosion-proof type temperature and humidity sensor | |
| CN218481065U (en) | Plug copper sheet exposes high measuring apparatu | |
| CN210221887U (en) | Immersion type suspended matter concentration meter with accurate limiting protection function | |
| CN211855592U (en) | Pipeline temperature display device | |
| CN209945568U (en) | Temperature protection thermocouple of intelligence frying pan |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |