CN108828338B - External shunt detection device and method with temperature monitoring function - Google Patents
External shunt detection device and method with temperature monitoring function Download PDFInfo
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- 238000012544 monitoring process Methods 0.000 title claims abstract description 68
- 238000001514 detection method Methods 0.000 title claims abstract description 30
- 238000000034 method Methods 0.000 title claims abstract description 26
- 238000012360 testing method Methods 0.000 claims abstract description 14
- 238000009529 body temperature measurement Methods 0.000 claims abstract description 13
- 230000000007 visual effect Effects 0.000 claims abstract description 12
- 238000005259 measurement Methods 0.000 claims description 13
- 230000002159 abnormal effect Effects 0.000 claims description 3
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- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
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Abstract
The invention discloses a detection device and a detection method for an outer clothing shunt with temperature monitoring, wherein the device comprises a visual temperature testing module, a shunt voltage metering module and a monitoring display module; the visual temperature testing module comprises an image recognition unit, an infrared temperature measuring unit and a three-dimensional positioning bracket; the image recognition unit is used for recognizing image information of the shunt resistance element in real time, and the infrared temperature measurement unit is used for measuring the temperature of each position of the shunt resistance element in real time; the device and the method are used for obtaining image information of a resistor component of the shunt through a camera, dividing the resistor component into a plurality of areas on an image, measuring temperature values of the areas through an infrared sensor, and judging whether the resistor component of the shunt is in a safe temperature range or not through comparison of the highest value of the temperature values with a preset temperature threshold value.
Description
Technical Field
The invention relates to the field of power detection, in particular to an external shunt detection device with temperature monitoring and a method thereof.
Background
Along with the increasing popularization of the science and technology development of electric automobiles, the power batteries of the electric automobiles are divided into two modes of alternating current charging and direct current charging, wherein the direct current charging adopts a large current of 150A-600A to shorten the charging time; because the current is larger during the direct current charging, the direct current externally attached shunt is adopted to convert the large current into the small voltage during the direct current electric energy metering current sampling. However, the working component of the direct current externally-attached shunt is a manganese-copper sheet resistor or a rod-shaped resistor, which generates heat under the condition of high current, the resistance value changes along with the change of temperature, and even when the temperature of the resistor exceeds the limit temperature, the resistance value changes irreversibly, so that when the externally-attached shunt is detected, the monitoring of the temperature of the shunt in the power-on state is necessary.
The monitoring process of the temperature during the electrifying detection of the externally attached shunt is a real-time process which is carried out in an electrified state, meanwhile, due to the limitation of the manufacturing process of the resistance element of the shunt, the temperature of each point on the resistance element is different, the highest temperature point needs to be found out during the temperature measurement, and the highest temperature is used as a judgment basis. Therefore, a general temperature measurement means (a contact or infrared point type temperature measuring instrument) can not ensure the safety of testers when monitoring the temperature, but also can not ensure that the temperature of each point of the resistance component is considered, and meanwhile, the workload of the testers can be increased.
Disclosure of Invention
In order to solve the problem that the measuring performance of a shunt cannot be guaranteed due to the fact that the temperature of a resistor element of the shunt is not measured accurately and comprehensively in the background technology, the invention provides an external shunt detection device with temperature monitoring and a method thereof, wherein the device and the method acquire image information of the resistor element of the shunt through a camera, divide the resistor element into a plurality of areas on an image, measure temperature values of the plurality of areas through an infrared sensor, and judge whether the resistor element of the shunt is in a safe temperature range or not through comparison of the highest value of the plurality of temperature values and a preset temperature threshold value; the device comprises a three-dimensional positioning support, and a camera and an infrared sensor can be conveniently and rapidly fixed near a shunt resistance component, so that a tester is isolated from a tested shunt during measurement, and personal safety is guaranteed; the externally-attached shunt detection device with temperature monitoring comprises:
the device comprises a visual temperature testing module, a shunt voltage metering module and a monitoring display module;
the visual temperature testing module comprises an image recognition unit, an infrared temperature measuring unit and a three-dimensional positioning bracket;
the image recognition unit comprises a camera and is used for recognizing the image information of the shunt resistance element in real time and sending the image to the monitoring display module in real time;
the infrared temperature measuring unit comprises an infrared sensor and is used for measuring the temperature of each position of a resistor component of the shunt in real time and sending the measured temperature value to the monitoring display module in real time;
the three-dimensional positioning support is used for fixing the image identification unit and the infrared temperature measurement unit, and the fixing positions can be adjusted in three degrees of freedom, so that the camera can accurately acquire image information of the shunt resistance component, and the infrared temperature measurement unit can accurately measure the temperature of the shunt resistance component;
the shunt voltage metering module is used for measuring the voltage signal converted by the shunt and sending a test result to the monitoring display module;
the monitoring display module comprises a display screen and is used for receiving data information sent by the visual temperature testing module and the voltage metering module of the current divider, and the data information comprises image information, temperature values and voltage signals corresponding to all areas of the image information; and displaying the data information on a display screen in real time.
Further, the device also comprises a current output module and an emergency stop starting module;
the current output module comprises a current standard source, the current output module is used for applying current to the current divider and sending the applied current value to the monitoring display module, and the monitoring display module displays the current value applied by the current output module in real time;
the starting and emergency stopping module comprises a starting switch and an emergency stopping button, and the starting switch is used for controlling the device to be electrified and start to operate; the emergency stop button is used for emergently cutting off the power supply of the device.
Further, the image identification unit is used for carrying out region division on the image of the shunt resistance component obtained by identification according to a preset rule; the images of the divided areas are sent to a monitoring display module in real time;
and the infrared temperature measurement unit is used for sending the temperature value of each area to the monitoring display module in real time according to the divided areas according to the preset rule.
Further, the monitoring display module comprises an alarm unit, when the highest value of the temperature values of the plurality of areas received by the monitoring display module is higher than a preset temperature threshold value, the monitoring display module sends an alarm instruction to the alarm unit, and the alarm module performs sound-light alarm; and the monitoring display module displays and alarms on the display screen.
Furthermore, the monitoring display module comprises a metering monitoring unit, and the metering monitoring unit is used for calculating according to a voltage measurement signal input by the voltage measurement module of the shunt and a current value output by the current output module, and confirming the shunting performance of the shunt.
The detection method of the externally-attached shunt with the temperature monitoring function comprises the following steps:
aligning an infrared sensor and a camera of the detection device to a resistance component of the shunt to be detected;
starting a detection device, and measuring and obtaining metering information of the shunt and image information and temperature values of a resistor component of the shunt in real time;
and displaying the metering information of the shunt to be tested, the image information of the resistor component of the shunt and the temperature value in real time through a display screen of the inspection device.
Further, the method further comprises:
before starting the detection device, connecting a current standard source into the current divider and the detection device;
if an abnormal condition occurs, the emergency stop button is pressed to cut off the power supply of the device emergently.
Further, the step of measuring and obtaining the image information of the shunt resistance element comprises the step of carrying out region division on the image of the shunt resistance element obtained by identification according to a preset rule after obtaining the image information;
the measuring and obtaining of the temperature value of the shunt resistance component comprises the steps of obtaining a plurality of temperature values according to preset rules and divided area measurement, and feeding back the temperature values and corresponding area information in real time.
Further, when the highest value of the plurality of measured temperature values is higher than a preset temperature threshold value, the detection device performs sound-light alarm and displays alarm information on a display screen.
And further, confirming the shunting performance of the shunt to be tested according to the shunt metering information obtained by measurement and the current value accessed by the current standard source.
The invention has the beneficial effects that: the technical scheme of the invention provides an external shunt detection device with temperature monitoring and a method thereof, wherein the device and the method acquire image information of a shunt resistance element through a camera, divide the resistance element into a plurality of areas on an image, measure temperature values of the areas through an infrared sensor, and judge whether the shunt resistance element is in a safe temperature range or not through comparison of the highest value of the temperature values with a preset temperature threshold value; the device comprises a three-dimensional positioning support, and a camera and an infrared sensor can be conveniently and rapidly fixed near a shunt resistance element, so that a tester is isolated from a tested shunt during measurement, and personal safety is guaranteed.
Drawings
A more complete understanding of exemplary embodiments of the present invention may be had by reference to the following drawings in which:
FIG. 1 is a block diagram of an external shunt detection device with temperature monitoring according to an embodiment of the present invention;
FIG. 2 is a schematic view of a three-dimensional positioning frame according to an embodiment of the present invention;
FIG. 3 is a flow chart of a method for detecting an attached shunt with temperature monitoring in accordance with an embodiment of the present invention.
Detailed Description
The exemplary embodiments of the present invention will now be described with reference to the accompanying drawings, however, the present invention may be embodied in many different forms and is not limited to the embodiments described herein, which are provided for complete and complete disclosure of the present invention and to fully convey the scope of the present invention to those skilled in the art. The terminology used in the exemplary embodiments illustrated in the accompanying drawings is not intended to be limiting of the invention. In the drawings, the same units/elements are denoted by the same reference numerals.
Unless otherwise defined, terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Further, it will be understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and will not be interpreted in an idealized or overly formal sense.
FIG. 1 is a block diagram of an external shunt detection device with temperature monitoring according to an embodiment of the present invention; as shown in fig. 1, the device obtains image information of the shunt resistance element through a camera, divides the resistance element into a plurality of regions on an image, measures temperature values of the plurality of regions through an infrared sensor, and judges whether the shunt resistance element is in a safe temperature range or not through comparison between a highest value of the plurality of temperature values and a preset temperature threshold value; the externally-attached shunt detection device with temperature monitoring comprises:
a visual temperature test module 110, a shunt voltage metering module 120 and a monitoring display module 130;
the visual temperature testing module 110 comprises an image recognition unit 111, an infrared temperature measuring unit 112 and a three-dimensional positioning bracket 113;
the image recognition unit 111 comprises a camera, and the image recognition unit 111 is used for recognizing image information of the shunt resistance element in real time and sending the image to the monitoring display module 130 in real time;
further, the image recognition unit 111 is configured to perform region division on the recognized and obtained image of the shunt resistance component according to a preset rule; the divided images are sent to the monitoring display module 130 in real time;
the infrared temperature measuring unit 112 comprises an infrared sensor, and the infrared temperature measuring unit 112 is used for measuring the temperature of each position of the shunt resistor element in real time and sending the measured temperature value to the monitoring display module 130 in real time;
further, the infrared temperature measurement unit 112 is configured to send the temperature value of each area to the monitoring display module 130 in real time according to the divided areas according to a preset rule.
The three-dimensional positioning bracket 113 is used for fixing the image recognition unit 111 and the infrared temperature measurement unit 112, and can adjust the fixing positions in three degrees of freedom, so that the camera can accurately acquire the image information of the shunt resistance component, and the infrared temperature measurement unit 112 can accurately measure the temperature of the shunt resistance component;
taking this embodiment as an example, as shown in fig. 2, fig. 2 is a schematic view of a three-dimensional positioning bracket 113 according to an embodiment of the present invention; the three-dimensional positioning bracket 113 comprises guide rails in three directions of north, sky and east, so that a device fixed on the bracket can move in three degrees of freedom and is fixed at any position in a related space; in this embodiment, the image recognition unit 111 and the infrared temperature measurement unit 112 are integrated in a single housing, and are fixed on the three-dimensional positioning bracket 113 through hinges, so that the orientation of the camera and the infrared sensor can be determined by rotating the hinges.
The shunt voltage metering module 120 is configured to measure a voltage signal converted by the shunt, and send a test result to the monitoring display module 130;
the monitoring display module 130 includes a display screen, and the monitoring display module 130 is configured to receive data information sent by the visual temperature testing module 110 and the shunt voltage metering module 120, where the data information includes image information, temperature values and voltage signals corresponding to regions of the image information; and displaying the data information on a display screen in real time.
Further, the monitoring display module 130 includes an alarm unit, and when a highest value of the temperature values of the plurality of areas received by the monitoring display module 130 is higher than a preset temperature threshold, the monitoring display module 130 sends an alarm instruction to the alarm unit, and the alarm module performs an audible and visual alarm; the monitoring display module 130 displays an alarm on a display screen.
Further, the device also comprises a current output module and an emergency stop starting module;
the current output module comprises a current standard source, the current output module is used for applying current to the current divider and sending the applied current value to the monitoring display module 130, and the monitoring display module 130 displays the current value applied by the current output module in real time;
further, the monitoring display module 130 includes a metering monitoring unit, and the metering monitoring unit is configured to calculate according to the voltage measurement signal input by the shunt voltage measurement module 120 and the current value output by the current output module, and confirm the shunt performance of the shunt.
Fig. 2 is a flowchart of a method for detecting an external shunt with temperature monitoring according to an embodiment of the present invention, as shown in fig. 2, the method includes:
further, the step of measuring and obtaining the image information of the shunt resistance element comprises the step of carrying out region division on the image of the shunt resistance element obtained by identification according to a preset rule after obtaining the image information;
the measuring and obtaining of the temperature value of the shunt resistance component comprises the steps of obtaining a plurality of temperature values according to preset rules and divided area measurement, and feeding back the temperature values and corresponding area information in real time.
And 230, displaying the metering information of the shunt to be tested and the image information and the temperature value of the resistor component of the shunt in real time through a display screen of the inspection device.
Further, the method further comprises:
before starting the detection device, connecting a current standard source into the current divider and the detection device;
if an abnormal condition occurs, the emergency stop button is pressed to cut off the power supply of the device emergently.
Further, when the highest value of the plurality of measured temperature values is higher than a preset temperature threshold value, the detection device performs sound-light alarm and displays alarm information on a display screen.
And further, confirming the shunting performance of the shunt to be tested according to the shunt metering information obtained by measurement and the current value accessed by the current standard source.
In the description provided herein, numerous specific details are set forth. However, it is understood that embodiments of the disclosure may be practiced without these specific details. In some instances, well-known methods, structures and techniques have not been shown in detail in order not to obscure an understanding of this description.
Those skilled in the art will appreciate that the modules in the device in an embodiment may be adaptively changed and disposed in one or more devices different from the embodiment. The modules or units or components of the embodiments may be combined into one module or unit or component, and furthermore they may be divided into a plurality of sub-modules or sub-units or sub-components. All of the features disclosed in this specification (including any accompanying claims, abstract and drawings), and all of the processes or elements of any method or apparatus so disclosed, may be combined in any combination, except combinations where at least some of such features and/or processes or elements are mutually exclusive. Each feature disclosed in this specification (including any accompanying claims, abstract and drawings) may be replaced by alternative features serving the same, equivalent or similar purpose, unless expressly stated otherwise. Reference to step numbers in this specification is only for distinguishing between steps and is not intended to limit the temporal or logical relationship between steps, which includes all possible scenarios unless the context clearly dictates otherwise.
Moreover, those skilled in the art will appreciate that while some embodiments described herein include some features included in other embodiments, rather than other features, combinations of features of different embodiments are meant to be within the scope of the disclosure and form different embodiments. For example, any of the embodiments claimed in the claims can be used in any combination.
Various component embodiments of the disclosure may be implemented in hardware, or in software modules running on one or more processors, or in a combination thereof. The present disclosure may also be embodied as device or system programs (e.g., computer programs and computer program products) for performing a portion or all of the methods described herein. Such programs implementing the present disclosure may be stored on a computer-readable medium or may be in the form of one or more signals. Such a signal may be downloaded from an internet website or provided on a carrier signal or in any other form.
It should be noted that the above-mentioned embodiments illustrate rather than limit the disclosure, and that those skilled in the art will be able to design alternative embodiments without departing from the scope of the appended claims. The word "comprising" does not exclude the presence of elements or steps not listed in a claim. The word "a" or "an" preceding an element does not exclude the presence of a plurality of such elements. The disclosure may be implemented by means of hardware comprising several distinct elements, and by means of a suitably programmed computer. In the unit claims enumerating several systems, several of these systems may be embodied by one and the same item of hardware.
The foregoing is directed to embodiments of the present disclosure, and it is noted that numerous improvements, modifications, and variations may be made by those skilled in the art without departing from the spirit of the disclosure, and that such improvements, modifications, and variations are considered to be within the scope of the present disclosure.
Claims (10)
1. An externally attached shunt detection device with temperature monitoring, the device comprising: the device comprises a visual temperature testing module, a shunt voltage metering module and a monitoring display module;
the visual temperature testing module comprises an image recognition unit, an infrared temperature measuring unit and a three-dimensional positioning bracket;
the image recognition unit comprises a camera and is used for recognizing the image information of the shunt resistance element in real time, dividing the image information into regions according to a preset rule and sending the images of the divided regions to the monitoring display module in real time;
the infrared temperature measuring unit comprises an infrared sensor and is used for measuring the temperature of each position of a resistor component of the shunt in real time, dividing each position into regions according to a preset rule and sending the temperature values measured by the divided regions to the monitoring display module in real time;
the three-dimensional positioning support is used for fixing the image identification unit and the infrared temperature measurement unit, and the fixing positions can be adjusted in three degrees of freedom, so that the camera can accurately acquire image information of the shunt resistance component, and the infrared temperature measurement unit can accurately measure the temperature of the shunt resistance component;
the shunt voltage metering module is used for measuring the voltage signal converted by the shunt and sending a test result to the monitoring display module;
the monitoring display module comprises a display screen and is used for receiving data information sent by the visual temperature testing module and the voltage metering module of the current divider, and the data information comprises image information, temperature values and voltage signals corresponding to all areas of the image information; and displaying the data information on a display screen in real time.
2. The apparatus of claim 1, wherein: the device also comprises a current output module and an emergency stop starting module;
the current output module comprises a current standard source, the current output module is used for applying current to the current divider and sending the applied current value to the monitoring display module, and the monitoring display module displays the current value applied by the current output module in real time;
the starting and emergency stopping module comprises a starting switch and an emergency stopping button, and the starting switch is used for controlling the device to be electrified and start to operate; the emergency stop button is used for emergently cutting off the power supply of the device.
3. The device according to claim 1, wherein the image recognition unit is used for carrying out region division on the recognized and obtained image of the shunt resistance component according to a preset rule; the images of the divided areas are sent to a monitoring display module in real time; and the infrared temperature measurement unit is used for sending the temperature value of each area to the monitoring display module in real time according to the divided areas according to the preset rule.
4. The apparatus of claim 3, wherein: the monitoring display module comprises an alarm unit, when the highest value of the temperature values of the plurality of areas received by the monitoring display module is higher than a preset temperature threshold value, the monitoring display module sends an alarm instruction to the alarm unit, and the alarm unit carries out acousto-optic alarm; and the monitoring display module displays and alarms on the display screen.
5. The apparatus of claim 2, wherein: the monitoring display module comprises a metering monitoring unit, and the metering monitoring unit is used for calculating according to a voltage measuring signal input by the voltage measuring module of the shunt and a current value output by the current output module and confirming the shunting performance of the shunt.
6. A method of detecting an externally attached shunt with temperature monitoring, the method comprising:
aligning an infrared sensor and a camera of the detection device to a resistance component of the shunt to be detected;
starting a detection device, and measuring and obtaining metering information of the shunt and image information and temperature values of a resistor component of the shunt in real time; dividing the image information and the temperature value into areas according to a preset rule, and determining the image information and the temperature value of the divided areas;
and displaying the metering information of the shunt to be tested and the image information and the temperature value of the area divided by the resistor component of the shunt in real time through a display screen of the inspection device.
7. The method of claim 6, further comprising:
before starting the detection device, connecting a current standard source into the current divider and the detection device;
if an abnormal condition occurs, the emergency stop button is pressed to cut off the power supply of the device emergently.
8. The method of claim 6, wherein:
the step of obtaining the image information of the shunt resistance element through measurement comprises the step of carrying out region division on an image of the shunt resistance element obtained through identification according to a preset rule after obtaining the image information;
the measuring and obtaining of the temperature value of the shunt resistance component comprises the steps of obtaining a plurality of temperature values according to preset rules and divided area measurement, and feeding back the temperature values and corresponding area information in real time.
9. The method of claim 8, wherein:
and when the highest value of the plurality of measured temperature values is higher than a preset temperature threshold value, the detection device performs sound-light alarm and displays alarm information on a display screen.
10. The method of claim 7, wherein: and confirming the shunting performance of the shunt to be tested according to the shunt metering information obtained by measurement and the current value accessed by the current standard source.
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| CN109307552B (en) * | 2018-11-29 | 2019-10-08 | 汇乐因斯福环保安全研究院（苏州）有限公司 | A kind of spark detection testing probe head performance device and method |
| CN109444619A (en) * | 2018-12-29 | 2019-03-08 | 国网河北省电力有限公司电力科学研究院 | Direct current current divider detection system |
| CN111398836A (en) * | 2020-04-26 | 2020-07-10 | 东风汽车集团有限公司 | Integrated power battery high-voltage detection system and insulation verification method thereof |
| CN116068250A (en) * | 2021-11-04 | 2023-05-05 | 深圳市超达投资合伙企业(有限合伙) | Realization method for improving temperature stability of shunt |
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| JP2005208518A (en) * | 2004-01-26 | 2005-08-04 | Victor Co Of Japan Ltd | Image display apparatus |
| JP2008216376A (en) * | 2007-02-28 | 2008-09-18 | Kyocera Mita Corp | Temperature control apparatus for fixing unit and image forming apparatus |
| CN104132733B (en) * | 2014-07-04 | 2017-03-08 | 国家电网公司 | Combination type thermal infrared imager and its temperature checking method |
| WO2016053244A1 (en) * | 2014-09-29 | 2016-04-07 | GE Intelligent Platforms Embedded Systems, Inc. | Resistance temperature detection with single current source current splitter |
| CN106527530B (en) * | 2016-10-28 | 2018-11-27 | 重庆工商职业学院 | A kind of the temperature uniformity Detection & Controling method and its system of heated at constant temperature platform |
| CN107449983A (en) * | 2017-08-10 | 2017-12-08 | 王联喜 | A kind of transformer synthesis device for detecting temperature of infrared view identification |
| CN107589369A (en) * | 2017-09-04 | 2018-01-16 | 安徽科盟电子科技有限公司 | A kind of intelligent monitoring protection device for preventing breaker from malfunctioning |
| CN107544424A (en) * | 2017-10-23 | 2018-01-05 | 盐城工学院 | Temperature monitoring system and data transmission system |
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