CN220584388U - Channel switching device and verification system for verifying multi-channel test equipment - Google Patents
Channel switching device and verification system for verifying multi-channel test equipment Download PDFInfo
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- CN220584388U CN220584388U CN202320370789.4U CN202320370789U CN220584388U CN 220584388 U CN220584388 U CN 220584388U CN 202320370789 U CN202320370789 U CN 202320370789U CN 220584388 U CN220584388 U CN 220584388U
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Abstract
The utility model discloses a channel switching device and a verification system for verifying multichannel test equipment, wherein the multichannel test equipment comprises N test channels, each test channel comprises M signal channels, and the channel switching device comprises: the N interface modules comprise M interfaces, and the first end of the mth interface of the nth interface module is used for connecting the mth signal channel of the nth test channel; the M first switch array modules comprise N first switches, and the second end of the M interface of the N interface module is connected with the N first switches of the M first switch array modules; and the switching control module is used for sending a control signal to each first switch array module at the verification moment of the nth test channel so as to control at least one nth first switch to be conducted.
Description
Technical Field
The present utility model relates to the field of electrical automation. And more particularly, to a channel switching apparatus and a verification system for verification of a multi-channel test device.
Background
The battery of consumer electronics needs to carry out multiple tests before leaving the factory, including many functional detection such as overshoot protection, over-discharge protection, under-voltage protection, overvoltage protection, short-circuit protection and detection internal resistance, just needs the battery system test equipment of high accuracy or the battery system check out test equipment of high accuracy at this moment, and the precision of test equipment itself is influenced by environmental factors such as temperature, and the precision is easy to deviate after a period of time, need regularly to calibrate test equipment, and the higher the precision, the higher the frequency that needs to be calibrated.
The test equipment is placed in an automatic line body on the site of a customer, each automatic line comprises 96 test channels, a maintainer places a check box on the test equipment of one channel, then connects the check box to a multimeter, then connects the equipment and the multimeter with an upper computer, and operates the calibration software of the upper computer to calibrate the single equipment one by one; the method has low efficiency, a great deal of manpower is required for calibration, and the whole automatic line body is required to be stopped for calibration, so that the production efficiency is greatly affected.
Disclosure of Invention
In view of the above, a first aspect of the present utility model provides a channel switching apparatus for verifying a multi-channel test device, the multi-channel test device including N test channels, each test channel including M signal channels, N > 1, M being greater than or equal to 1; the channel switching device includes:
the N interface modules comprise M interfaces, wherein the first end of the mth interface of the nth interface module is used for connecting the mth signal channel of the nth test channel, N epsilon [1, N ], M epsilon [1, M ];
the system comprises M first switch array modules, wherein each first switch array module comprises N first switches, and the second end of an mth interface of an nth interface module is connected with an nth first switch of the mth first switch array module; and
and the switching control module is used for sending a control signal to each first switch array module at the verification moment of the nth test channel so as to control the conduction of the nth first switch in at least one first switch array module, thereby communicating with at least one signal channel of the nth test channel.
Preferably, the first switch is a field effect transistor switch.
Preferably, the switching control module is a micro control unit.
Preferably, the switching control module is connected with the first switch array module through a general input/output interface.
A second aspect of the present utility model provides a verification system for a multi-channel battery detection device, comprising:
the device comprises a verification module, an upper computer and the channel switching device;
the switching control module is used for responding to the control instruction sent by the upper computer to determine that the current moment is the nth verification moment, and sending a control signal to each first switch array module so as to control the on of the nth switch in each first switch array module, thereby communicating at least one signal channel of the nth test channel to the verification module and realizing the verification of the at least one signal channel of the nth test channel.
Preferably, the verification module is a multimeter.
Preferably, the verification module is built in the channel switching device.
Preferably, the channel switching device further comprises a plurality of current detecting resistors, wherein first ends of the current detecting resistors are respectively connected with each first switch array module, and second ends of the current detecting resistors are connected to the verification module.
Preferably, the plurality of current sensing resistors have at least two resistance values.
Preferably, the plurality of current sensing resistors have at least two resistance value magnitudes.
The beneficial effects of the utility model are as follows:
the utility model can realize the automatic calibration of the multichannel high-precision test equipment, has the advantages of simple operation and the like, does not need maintenance personnel to contact the calibration equipment, can greatly reduce the field manpower, does not need to stop an automatic line body during calibration, and can greatly improve the production efficiency.
Drawings
The following describes the embodiments of the present utility model in further detail with reference to the drawings.
Fig. 1 shows a block diagram of a verification system of a multi-channel battery detection device according to an embodiment of the present utility model.
Fig. 2 is another block diagram showing a verification system of a multi-channel battery detection device according to an embodiment of the present utility model.
Fig. 3 is another block diagram showing a verification system of a multi-channel battery detection device according to an embodiment of the present utility model.
Detailed Description
In order to more clearly illustrate the present utility model, the present utility model will be further described with reference to preferred embodiments and the accompanying drawings. Like parts in the drawings are denoted by the same reference numerals. It is to be understood by persons skilled in the art that the following detailed description is illustrative and not restrictive, and that this utility model is not limited to the details given herein.
One embodiment of the utility model provides a verification system for a multi-channel test device. As shown in fig. 1, if the multi-channel testing device, for example, the multi-channel battery testing device, the present embodiment may be referred to as a verification system of the multi-channel battery testing device. As shown in FIG. 1, the multi-channel test apparatus includes N test channels, each of the test channels includes M signal channels, N > 1, M > 1, and the verification system includes:
the system comprises a verification module, an upper computer and a channel switching device;
wherein, the passageway switching device includes: the system comprises N interface modules, M first switch array modules and a switching control module, wherein each interface module comprises M interfaces, and the first end of the mth interface of the nth interface module is used for connecting the mth signal channel of the nth test channel, N epsilon [1, N ] and M epsilon [1, M ]. The first switch array module comprises N first switches, and the second end of the m interface of the N interface module is connected with the N switch of the m first switch array module. The switching control module is used for sending a control signal to each first switch array module at the verification moment of the nth test channel so as to control the n-th switch in at least one first switch array module to be conducted, so that at least one signal channel of the nth test channel is communicated. And the upper computer is used for acquiring the detection value of the test channel detected by the verification module so as to realize verification.
In a specific example, as shown in fig. 2, the multi-channel test apparatus is provided with 32 test channels, each test channel includes 4 signal channels (including a signal channel outputting a signal f+, a signal channel outputting a ground signal F-, a signal channel measuring a signal s+ and a signal channel measuring a ground signal S-, and the channel switching device of the verification system is provided with 32 interface modules, 4 first switch array modules and a switching control module, the 32 interface modules CN1 to CN32 are respectively connected with the 32 test channels, each interface module includes 4 interfaces respectively used for correspondingly connecting the 4 signal channels of the test channel, that is, a first end of each interface is connected with one signal channel. The 4 first switch array modules M1, M2, M3 and M4 are respectively connected with 4 signal channels of 32 test channels, each first switch array module comprises 32 first switches, the signal channels of the output signals F+ of the 32 interface modules are connected with the first switch array module M1, and the M1 comprises 32 first switches which are correspondingly connected with the signal channels of the output signals F+ of the 32 interface modules; the signal channels of the measurement signals S+ of the 32 interface modules are connected with the first switch array module M2, and the M2 comprises 32 first switches which are correspondingly connected with the signal channels of the measurement signals S+ of the 32 interface modules; the output measurement signal S-channels of the 32 interface modules are connected with the first switch array module M3, and the M3 comprises 32 first switches which are correspondingly connected with the signal channels of the measurement grounding signals S-of the 32 interface modules; the signal channels of the output ground signals F-of the 32 interface modules are connected to the first switch array module M4, and the M4 includes 32 first switches correspondingly connected to the signal channels of the output ground signals F-of the 32 interface modules, that is, the second end of each interface is connected to the corresponding first switch.
In a specific example, the first switch is a field effect transistor. In one specific example, the channel switching device is box-shaped and may be referred to as a channel switching cartridge.
In a specific embodiment, as shown in fig. 2, the switching control module is a micro control unit MCU, and is powered by 12V voltage.
In a specific embodiment, as shown in fig. 2, the MCU controls the first switch array module through a GPIO interface, i.e., a general purpose input and output interface.
In a specific embodiment, the verification module is a multimeter or is built in the channel switching device.
As shown in FIG. 2, when the calibration module is a multimeter:
taking the calibration of the channel 32 as an example, the upper computer sends a control instruction to the switching control module of the channel switching device to control the switch K5 of the signal channel of the first switch array module M1 to be connected with the signal channel of the output signal F+ corresponding to the closed channel 32, the switch K6 of the signal channel of the first switch array module M2 to be connected with the signal channel of the measurement signal S+ to be connected with the switch K7 of the signal channel of the first switch array module M3 to be connected with the signal channel of the measurement ground signal S-to be connected with the switch K8 of the signal channel of the first switch array module M4, and the voltage, the current output value and the measured value are directly measured through the universal meter.
In one specific example, a multimeter model FLUKE 8588A is selected.
As shown in fig. 3, when a verification module (not shown in the figure) built in the channel switching device is selected, the verification module is used:
in a specific embodiment, the verification module is built in the channel switching device, and further, the channel switching device further includes a plurality of current detecting resistors respectively connected with the first switch array module and the verification module. The first ends of the plurality of current detection resistors are respectively connected with each first switch array module, the second ends of the plurality of current detection resistors are connected with the verification module, and the verification module measures the measured value and the output value of the current in a resistor voltage division mode.
In one specific embodiment, the channel switching device further comprises a second switch array module and a plurality of current detection resistors connected with the verification module; the switching control module is further used for responding to a control instruction sent by the upper computer and controlling the second switch array module to switch the current detection resistor communicated with the test channel. The resistors with different resistance values can be called as current detection resistors, and different detection ranges are selected by selecting the resistors with different resistance values.
In a specific example, a plurality of the current detecting resistors have two resistance values, such as 10Ω and 100deg.Ω, and a wide range of detection ranges can be realized by selecting and combining different resistors.
The above example of the host computer selecting calibration of the channel 32:
when the upper computer selects to calibrate the voltage of the channel 32, the upper computer sends a control instruction to a switching control module of the channel switching device to control the switches K5, K6, K7 and K8 of four signal channels corresponding to the channel 32 to be closed, and the measured value and the output value of the voltage are measured through the calibration module.
When the upper computer selectively corrects the current of the channel 32, the upper computer sends a control instruction to a switching control module of the channel switching device to control the switches K5, K6, K7 and K8 of four signal channels corresponding to the channel 32 to be closed, the second switch array module is closed to be connected with the switches K1, K2 and K3 of the resistor R1, the output signal F+ forms a loop with the output grounding signal F-through the resistor R1, the measurement signal S+ forms a loop with the measurement grounding signal S-through the resistor R1, and at the moment, the verification module measures the measured value and the output value of the current through measuring the voltage value of the resistor R1.
The upper computer comprises a switch and a computer, and the channel switching device and the multi-channel battery detection equipment are connected with the switch through a network port. The detected values may be output values and measured values of the current and the voltage.
In conclusion, the embodiment can realize the automatic calibration of the multichannel high-precision test equipment, has the advantages of simple operation and the like, does not need maintenance personnel to contact the calibration equipment, can greatly reduce the field manpower, does not need to stop an automatic line body during calibration, and can greatly improve the production efficiency.
In the description of the present utility model, it should be noted that the azimuth or positional relationship indicated by the terms "upper", "lower", etc. are based on the azimuth or positional relationship shown in the drawings, and are merely for convenience of describing the present utility model and simplifying the description, and are not indicative or implying that the apparatus or element in question must have a specific azimuth, be constructed and operated in a specific azimuth, and thus should not be construed as limiting the present utility model. Unless specifically stated or limited otherwise, the terms "mounted," "connected," and "coupled" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.
It is further noted that in the description of the present utility model, relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
It should be understood that the foregoing examples of the present utility model are provided merely for clearly illustrating the present utility model and are not intended to limit the embodiments of the present utility model, and that various other changes and modifications may be made therein by one skilled in the art without departing from the spirit and scope of the present utility model as defined by the appended claims.
Claims (10)
1. A channel switching device for verifying multi-channel test equipment comprises N test channels, wherein each test channel comprises M signal channels, N is more than 1, and M is more than or equal to 1; the channel switching device is characterized by comprising:
the N interface modules comprise M interfaces, wherein the first end of the mth interface of the nth interface module is used for connecting the mth signal channel of the nth test channel, N epsilon [1, N ], M epsilon [1, M ];
the system comprises M first switch array modules, wherein each first switch array module comprises N first switches, and the second end of an mth interface of an nth interface module is connected with an nth first switch of the mth first switch array module; and
and the switching control module is used for sending a control signal to each first switch array module at the verification moment of the nth test channel so as to control the conduction of the nth first switch in at least one first switch array module, thereby communicating with at least one signal channel of the nth test channel.
2. The apparatus of claim 1, wherein the first switch is a field effect transistor switch.
3. The apparatus of claim 1, wherein the switching control module is a micro-control unit.
4. The apparatus of claim 1, wherein the switching control module is coupled to the first switch array module via a universal input-output interface.
5. A verification system, comprising:
a verification module, an upper computer and a channel switching device according to any one of claims 1-4;
the switching control module is used for responding to the control instruction sent by the upper computer to determine that the current moment is the nth verification moment, and sending a control signal to each first switch array module so as to control the on of the nth switch in each first switch array module, thereby communicating at least one signal channel of the nth test channel to the verification module and realizing the verification of the at least one signal channel of the nth test channel.
6. The system of claim 5, wherein the verification module is a multimeter.
7. The system of claim 5, wherein the verification module is built into the channel switching device.
8. The system of claim 7, wherein the channel switching device further comprises a plurality of current sensing resistors, a first end of each current sensing resistor being connected to each first switch array module, and a second end of each current sensing resistor being connected to the verification module.
9. The system of claim 8, wherein the plurality of current sensing resistors have at least two resistance values.
10. The system of claim 9, wherein the plurality of current sensing resistors have at least two magnitudes of resistance.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202320370789.4U CN220584388U (en) | 2023-03-02 | 2023-03-02 | Channel switching device and verification system for verifying multi-channel test equipment |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202320370789.4U CN220584388U (en) | 2023-03-02 | 2023-03-02 | Channel switching device and verification system for verifying multi-channel test equipment |
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| CN220584388U true CN220584388U (en) | 2024-03-12 |
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