CN213181806U - Electrical property testing arrangement and car low pressure test system - Google Patents
Electrical property testing arrangement and car low pressure test system Download PDFInfo
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- CN213181806U CN213181806U CN202021400822.6U CN202021400822U CN213181806U CN 213181806 U CN213181806 U CN 213181806U CN 202021400822 U CN202021400822 U CN 202021400822U CN 213181806 U CN213181806 U CN 213181806U
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Abstract
The utility model discloses an electrical property testing arrangement and car low pressure test system. The electrical property testing device comprises an acquisition processing module, a first current sensor and a plurality of second current sensors, wherein the measurement ranges of the second current sensors are different from each other; one end of the first current sensor is connected to a first current detection end, and the other end of the first current sensor is connected to a second current detection end; one end of each second current sensor is connected with the first current detection end through a channel switch, and the other end of each second current sensor is connected with the second current detection end; and the data acquisition end of the acquisition processing module is respectively connected with the signal output ends of the first current sensor and the second current sensor. The utility model discloses can realize the selection of the current sensor measuring range of multichannel, adopt the current sensor measuring current of optimum measuring range, improve and detect the precision.
Description
Technical Field
The utility model relates to a capability test technical field especially relates to an electrical property testing arrangement and car low pressure test system.
Background
At present, the amplitude span of the load current of the low-voltage electrical appliance is from milliampere level to more than dozens of amperes, and the detection time span is from millisecond level to hour level, so that different current sensors need to be replaced to acquire accurate data in the real vehicle test process. Based on this, the prior art mainly adopts the current sensor of multichannel to detect the electric current of vehicle low pressure system to carry out data comparison by the industrial computer in order to select the sensor data of the highest precision among them.
However, in the prior art, it is difficult to consider both the detection accuracy and the measurement range of the current sensor, and usually, a plurality of current sensors with different ranges are used to detect the current together, and when the detected current is too large, the current sensors of partial channels are impacted by large current, so that the accuracy error becomes large.
SUMMERY OF THE UTILITY MODEL
For overcoming prior art's defect, the utility model provides an electrical property testing arrangement and car low pressure test system can realize the selection of the current sensor measuring range of multichannel, adopts the current sensor measuring current of optimum measuring range, improves and detects the precision.
In order to solve the above technical problem, in a first aspect, an embodiment of the present invention provides an electrical performance testing apparatus, including an acquisition processing module, a first current sensor, and a plurality of second current sensors, where measurement ranges of the plurality of second current sensors are different from each other;
one end of the first current sensor is connected to a first current detection end, and the other end of the first current sensor is connected to a second current detection end;
one end of each second current sensor is connected with the first current detection end through a channel switch, and the other end of each second current sensor is connected with the second current detection end;
and the data acquisition end of the acquisition processing module is respectively connected with the signal output ends of the first current sensor and the second current sensor.
Furthermore, the electrical property testing device further comprises a control module, a signal end of the control module is connected with a signal output end of the acquisition processing module, and a control end of the control module is connected with a controlled end of each channel switch.
Furthermore, the electrical property testing device also comprises a display module, and the data acquisition end of the display module is connected with the signal output end of the acquisition processing module.
Furthermore, the electrical property testing device further comprises a voltage sensor, wherein one end of the voltage sensor is connected to the first voltage detection end, and the other end of the voltage sensor is connected to the second voltage detection end.
Further, the electrical property testing device further comprises a packaging box, wherein the packaging box is at least used for packaging the first current sensor, the second current sensor and the channel switch.
Furthermore, the number of the packaging boxes is multiple, and the first current sensor and the second current sensor of each packaging box are connected with the acquisition processing module.
Furthermore, the packaging box is at least provided with a first current wiring terminal and a second current wiring terminal; the first current wiring terminal is connected with the first current detection end, and the second current wiring terminal is connected with the second current detection end.
Further, the first current sensor is a current loop sensor.
Further, the channel switch is a direct current power relay.
In a second aspect, an embodiment of the present invention provides an automobile low voltage testing system, which includes the electrical performance testing apparatus as described above.
Compared with the prior art, the embodiment of the utility model provides an electrical property testing arrangement is through setting up the collection processing module, a plurality of second current sensor of first current sensor and different ranges, and each second current sensor is connected with a channel switch, make when using electrical property testing arrangement, can adopt first current sensor measuring current earlier, the second current sensor of optimum measurement range is selected according to first current sensor's collection data, the control corresponds channel switch again and opens, adopt the second current sensor measuring current of selection, thereby obtain more accurate collection data. When the detection current is too large, the first current sensor is used for detecting the current, and then the second current sensor with the optimal measurement range is used for detecting the current, so that the problem that the second current sensor is impacted by large current to cause accuracy errors to be increased can be avoided. The embodiment of the utility model discloses a selection of the current sensor measuring range that can realize the multichannel adopts the current sensor measuring current of optimum measuring range, improves and detects the precision.
Drawings
Fig. 1 is a schematic structural diagram of an electrical performance testing apparatus according to a first embodiment of the present invention;
fig. 2 is another schematic structural diagram of an electrical performance testing apparatus according to a first embodiment of the present invention;
fig. 3 is a schematic structural diagram of an electrical performance testing apparatus according to a second embodiment of the present invention;
fig. 4 is another schematic structural diagram of an electrical performance testing apparatus according to a second embodiment of the present invention.
Wherein the reference numbers in the drawings of the specification are as follows:
1: an acquisition processing module; 2: a first current sensor; 3: a second current sensor; 4: a channel switch; 5: a display module; 6: a voltage sensor; 7: packaging the box; 81: a first current terminal; 82: a second current terminal; 91: a first voltage terminal; 92: a second voltage terminal; 10: and a control module.
Detailed Description
The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are only some embodiments, not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
The first embodiment:
as shown in fig. 1, a first embodiment provides an electrical property testing device, which includes an acquisition processing module 1, a first current sensor 2, and a plurality of second current sensors 3, wherein the measurement ranges of the plurality of second current sensors 3 are different from each other; one end of the first current sensor 2 is connected to the first current detection end, and the other end of the first current sensor 2 is connected to the second current detection end; one end of each second current sensor 3 is connected with the first current detection end through a channel switch 4, and the other end of each second current sensor 3 is connected with the second current detection end; the data acquisition end of the acquisition processing module 1 is respectively connected with the signal output ends of the first current sensor 2 and the second current sensor 3.
As shown in fig. 2, in a preferred embodiment of the present embodiment, the first current sensor 2 is a wide-range current sensor, such as a 300A current sensor, and the second current sensor 3 is a current sensor having a measuring range smaller than that of the wide-range current sensor, such as a 250A current sensor, a 200A current sensor, a 150A current sensor, a 100A current sensor, a 50A current sensor, a 30A current sensor, a 10A current sensor, a 5A current sensor, a 1A current sensor, a 500mA current sensor, and the like.
In this embodiment, one end of the first current sensor 2 is connected to the first current detection end, the other end of the first current sensor 2 is connected to the second current detection end, and the signal output end of the first current sensor 2 is connected to the data acquisition end of the acquisition processing module 1, so that when the electrical performance testing device is applied, the first current sensor 2 can transmit the acquisition data obtained by the detection current to the acquisition processing module 1.
In this embodiment, one end of each second current sensor 3 is connected to the first current detection end through a channel switch 4 in an off state, the other end of each second current sensor 3 is connected to the second current detection end, and the signal output end of each second current sensor 3 is connected to the data acquisition end of the acquisition and processing module 1, so that after the first current sensor 2 transmits the acquired data obtained by detecting the current to the acquisition and processing module 1, a tester can select the second current sensor 3 with the optimal measurement range from all the second current sensors 3 according to the acquired data of the first current sensor 2, and manually control the corresponding channel switch 4 to be closed, and the selected second current sensor 3 is accessed to the test circuit. At this time, the selected second current sensor 3 can transmit the acquired data of the detected current to the acquisition processing module 1, so as to obtain accurate acquired data.
The electrical property testing arrangement that this embodiment provided is through setting up collection processing module 1, a plurality of second current sensor 3 of first current sensor 2 and different ranges, and each second current sensor 3 is connected with a channel switch 4, make when using electrical property testing arrangement, can adopt first current sensor 2 to detect the electric current earlier, second current sensor 3 according to the optimal measurement range of the data acquisition of first current sensor 2 selection, the corresponding channel switch 4 of the back control is opened, adopt the second current sensor 3 detection current of selection, thereby obtain more accurate data acquisition. When the detected current is too large, the first current sensor 2 is used for detecting the current, and then the second current sensor 3 with the optimal measuring range is used for detecting the current, so that the problem that the second current sensor 3 is impacted by large current to cause accuracy error to be increased can be avoided. The embodiment can realize the selection of the measuring range of the multi-channel current sensor, and the current sensor with the optimal measuring range is adopted to detect the current, so that the detection precision is improved.
In a preferred embodiment, the electrical performance testing apparatus further includes a display module 5, and a data acquisition end of the display module 5 is connected to a signal output end of the acquisition processing module 1.
In this embodiment, through addding display module 5, can adopt display module 5 to show the data collection that acquisition processing module 1 acquireed when using electric property testing arrangement, be favorable to helping the tester directly perceived to acquire the data collection of first current sensor 2 and second current sensor 3 fast.
In a preferred embodiment, the electrical performance testing device further comprises a voltage sensor 6, one end of the voltage sensor 6 is connected to the first voltage detection terminal, and the other end of the voltage sensor 6 is connected to the second voltage detection terminal.
In this embodiment, by additionally arranging the voltage sensor 6, the voltage sensor 6 can be used for detecting voltage when the electrical performance testing device is applied, so that the function of expanding the electrical performance testing device is realized.
In a preferred embodiment, the electrical property testing device further comprises a packaging box 7, and the packaging box 7 is at least used for packaging the first current sensor 2, the second current sensor 3 and the channel switch 4.
In this embodiment, by additionally arranging the packaging box 7, the packaging box 7 can be used for packaging the first current sensor 2, the second current sensor 3 and the channel switch 4, so that when the electric performance testing device is applied, the acquisition of the first current sensor 2 and the second current sensor 3 through the acquisition processing module 1 can be realized through the series current signal line. Compare in direct wiring mode, not only not influenced by the circuit space, effectively avoid the short circuit in the test procedure and connect wrong risk, test environment carries on convenient safety, has higher integrated operability moreover, and later stage upgrading transformation is with low costs, and it is convenient to expand the passageway.
In another preferred embodiment, when the voltage sensor 6 is additionally provided in the electrical property testing apparatus, the packaging box 7 is used for packaging at least the first current sensor 2, the second current sensor 3, the channel switch 4 and the voltage sensor 6.
In this embodiment, by additionally arranging the packaging box 7, the packaging box 7 can be adopted to package the first current sensor 2, the second current sensor 3, the channel switch 4 and the voltage sensor 6, so that when the electric performance testing device is applied, the acquisition of the data of the voltage sensor 6 through the acquisition processing module 1 can be realized through the series voltage signal line.
In the preferred embodiment, the number of the packaging boxes 7 is multiple, and the first current sensor 2 and the second current sensor 3 of each packaging box 7 are connected with the acquisition processing module 1.
In this embodiment, the acquisition and processing module 1 is connected to the first current sensor 2 and the second current sensor 3 in the plurality of packaging boxes 7, so that the detection channel of the electrical property testing device can be expanded, and the detection efficiency can be improved.
In the preferred embodiment, the packaging box 7 is provided with at least a first current terminal 81, a second current terminal 82; the first current terminal 81 is connected to the first current detection terminal, and the second current terminal 82 is connected to the second current detection terminal.
Wherein the first current terminal 81 and the second current terminal 82 are arranged on the same side of the enclosure 7.
It will be appreciated that the provision of the first current terminal 81 and the second current terminal 82 on the same side of the enclosure 7 facilitates the detection of current by a tester.
In another preferred embodiment, when the packaging box 7 is additionally provided with the packaging voltage sensor 6, the first voltage terminal 91 connected with the first voltage detection end and the second voltage terminal 92 connected with the second voltage detection end on the packaging box 7 are arranged on the same side of the packaging box 7.
It can be understood that the first voltage terminal 91 and the second voltage terminal 92 are disposed on the same side of the packaging box 7, which is beneficial for facilitating the voltage detection of the tester.
In a preferred embodiment, the first current sensor 2 is a current loop sensor.
Current loop sensors, i.e. hall current sensors. The Hall current sensor is based on a magnetic balance type Hall principle, according to the Hall effect principle, current Ic is introduced from a control current end of a Hall element, a magnetic field with magnetic induction intensity of B is applied in the normal direction of the plane of the Hall element, and then a potential VH is generated in the direction perpendicular to the current and the magnetic field (namely between Hall output ends), namely the potential VH is called Hall potential, and the magnitude of the potential VH is in direct proportion to the product of the control current IC and the magnetic induction intensity of B. The Hall current sensor indirectly measures the current of a current-carrying conductor by measuring the magnitude of Hall potential.
Second embodiment based on the first embodiment:
as shown in fig. 3-4, the second embodiment provides an electrical performance testing apparatus, further including a control module 10, a signal terminal of the control module 10 is connected to a signal output terminal of the acquisition processing module 1, and a control terminal of the control module 10 is connected to a controlled terminal of each channel switch 4.
The control module 10 may be disposed in the acquisition processing module 1, or may be disposed outside the acquisition processing module 1.
In this embodiment, by additionally arranging the control module 10, when the electrical performance testing device is applied, the channel switch 4 corresponding to the second current sensor 3 with the optimal measurement range is automatically controlled to be closed by the control module 10, the selected second current sensor 3 is accessed in the testing circuit, and the channel switch 4 which is automatically controlled to be closed is disconnected, the corresponding second current sensor 3 is disconnected in the testing circuit, so that the selection of the multi-channel measurement range of the current sensor is realized, the current sensor with the optimal measurement range detects the current, and the detection precision is improved.
In the preferred embodiment, the channel switch 4 is a dc power relay.
The third embodiment:
a third embodiment provides an automotive low-voltage testing system including the electrical property testing apparatus according to the first or second embodiment, and achieving the same advantages.
To sum up, the embodiment of the utility model provides an electrical property testing arrangement is through setting up a plurality of second current sensor 3 of gathering processing module 1, first current sensor 2 and different ranges, and each second current sensor 3 is connected with a channel switch 4, make when using electrical property testing arrangement, can adopt first current sensor 2 measuring current earlier, select the second current sensor 3 of optimum measurement range according to first current sensor 2's data collection, the corresponding channel switch 4 of the re-control is opened, adopt the second current sensor 3 measuring current of selection, thereby obtain more accurate data collection. When the detected current is too large, the first current sensor 2 is used for detecting the current, and then the second current sensor 3 with the optimal measuring range is used for detecting the current, so that the problem that the second current sensor 3 is impacted by large current to cause accuracy error to be increased can be avoided. The embodiment of the utility model discloses a selection of the current sensor measuring range that can realize the multichannel adopts the current sensor measuring current of optimum measuring range, improves and detects the precision.
The foregoing is a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the principle of the present invention, and these improvements and decorations are also considered as the protection scope of the present invention.
Claims (10)
1. The electrical property testing device is characterized by comprising an acquisition processing module, a first current sensor and a plurality of second current sensors, wherein the measurement ranges of the second current sensors are different from each other;
one end of the first current sensor is connected to a first current detection end, and the other end of the first current sensor is connected to a second current detection end;
one end of each second current sensor is connected with the first current detection end through a channel switch, and the other end of each second current sensor is connected with the second current detection end;
and the data acquisition end of the acquisition processing module is respectively connected with the signal output ends of the first current sensor and the second current sensor.
2. The electrical property testing device of claim 1, further comprising a control module, wherein a signal terminal of the control module is connected to a signal output terminal of the acquisition processing module, and a control terminal of the control module is connected to a controlled terminal of each of the channel switches.
3. The electrical property testing device of claim 1 or 2, further comprising a display module, wherein the data acquisition end of the display module is connected to the signal output end of the acquisition processing module.
4. The electrical property testing device of claim 1 or 2, further comprising a voltage sensor having one end connected to the first voltage detection terminal and another end connected to the second voltage detection terminal.
5. The electrical performance testing apparatus of claim 1 or 2, further comprising an enclosure for enclosing at least the first current sensor, the second current sensor, and the channel switch.
6. The electrical property testing device of claim 5, wherein the number of the packaging boxes is plural, and the first current sensor and the second current sensor of each packaging box are connected with the acquisition processing module.
7. The electrical property testing device of claim 5, wherein the enclosure has at least a first current terminal, a second current terminal; the first current wiring terminal is connected with the first current detection end, and the second current wiring terminal is connected with the second current detection end.
8. The electrical property testing device of claim 1 or 2, wherein the first current sensor is an electrical current loop sensor.
9. The electrical performance testing apparatus of claim 2, wherein the channel switch is a dc power relay.
10. An automotive low-voltage testing system, characterized by comprising an electrical property testing device according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202021400822.6U CN213181806U (en) | 2020-07-15 | 2020-07-15 | Electrical property testing arrangement and car low pressure test system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021400822.6U CN213181806U (en) | 2020-07-15 | 2020-07-15 | Electrical property testing arrangement and car low pressure test system |
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| CN213181806U true CN213181806U (en) | 2021-05-11 |
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| CN202021400822.6U Active CN213181806U (en) | 2020-07-15 | 2020-07-15 | Electrical property testing arrangement and car low pressure test system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114325043A (en) * | 2021-12-16 | 2022-04-12 | 华人运通(江苏)技术有限公司 | System and method for improving small current test precision |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114325043A (en) * | 2021-12-16 | 2022-04-12 | 华人运通(江苏)技术有限公司 | System and method for improving small current test precision |
| CN114325043B (en) * | 2021-12-16 | 2023-10-17 | 华人运通(江苏)技术有限公司 | System and method for improving small current test precision |
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Effective date of registration: 20240222 Granted publication date: 20210511 |