CN216285576U - Solid-state relay board card and multichannel voltage signal switching device - Google Patents
Solid-state relay board card and multichannel voltage signal switching device Download PDFInfo
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- CN216285576U CN216285576U CN202122037561.7U CN202122037561U CN216285576U CN 216285576 U CN216285576 U CN 216285576U CN 202122037561 U CN202122037561 U CN 202122037561U CN 216285576 U CN216285576 U CN 216285576U
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Abstract
The utility model provides a solid-state relay board card which comprises a voltage conversion chip, a plurality of LED driving chips and a plurality of solid-state relays, wherein the voltage conversion chip is connected with the LED driving chips, and the voltage conversion chip and the LED driving chips are connected with the solid-state relays. The utility model relates to a multi-channel voltage signal switching device which comprises a solid-state relay board card, a mother board, a micro control unit, a digital multimeter, a power supply and a wireless adapter board. The utility model adopts the solid-state relay board card to switch the multi-channel voltage signal, so that the multi-channel voltage signal is switched to the DMM voltage measuring end, the voltage measurement of the PCBA is completed, the voltage of the PCBA of a client is accurately measured, and the test value meets the test requirement of the client; the volume is small, the service life is long, the interference to external signals is small, and the standard board card can be used repeatedly.
Description
Technical Field
The utility model relates to the technical field of PCBA function testing, in particular to a solid-state relay board card and a multi-channel voltage signal switching device.
Background
At present, there are multiple channels of voltage signals to be measured in the PCBA (Printed Circuit Board + Assembly) functional test. In a conventional scheme, a voltage signal to be measured of the PCBA is switched by a mechanical relay, and is switched to a voltage measuring terminal of a DMM (Digital Multimeter) to measure the voltage. However, the mechanical relay is large in size, short in service life, large in interference to external signals and low in repeated utilization rate. When test equipment need switch a plurality of voltage signals, need more quantity mechanical relay to satisfy the demand that the voltage switched, test fixture's volume can double increase this moment, and the interference to external signal also can increase, can't used repeatedly when the project iteration, more and more can not satisfy the customer to the miniaturization, reliable, reuse's requirement. Therefore, a multi-channel voltage signal switching device which has a small size, a long service life and small interference to external signals and can be used as a standard board card for repeated use is urgently needed.
SUMMERY OF THE UTILITY MODEL
In order to overcome the defects of the prior art, the utility model aims to provide a solid-state relay board card which solves the problems that when a mechanical relay is used for switching to-be-tested voltage signals of a PCBA, the mechanical relay is large in size, short in service life, large in interference to external signals and low in repeated utilization rate.
The utility model provides a solid-state relay board card which comprises a voltage conversion chip, a plurality of LED driving chips and a plurality of solid-state relays, wherein the voltage conversion chip is connected with the LED driving chips, and the voltage conversion chip and the LED driving chips are connected with the solid-state relays.
Further, the voltage conversion chip is a 5V to 3.3V voltage conversion chip.
Further, the 5V to 3.3V voltage conversion chip adopts TLV1117-33IDCYR chip.
Further, the number of the LED driving chips is 4.
Further, the number of the solid-state relays is 64.
Further, the LED driving chip adopts an STP16CP05TTR chip.
Further, the solid state relay employs AQY212SX chips.
A multi-channel voltage signal switching device comprises the solid state relay board card, a motherboard, a micro control unit, a digital multimeter, a power supply and a wireless adapter plate, the solid-state relay board card, the micro-control unit and the digital multimeter are connected with the power supply, the solid-state relay board card, the micro-control unit and the digital multimeter are all provided with connectors, the solid-state relay board card, the micro-control unit and the digital multimeter are all plugged on the motherboard through connectors, the connector of the solid state relay board card is connected with the connector of the micro control unit and the connector of the digital multimeter through a circuit on a motherboard, the connector of the micro control unit is connected with the connector of the digital multimeter through a circuit on a motherboard, and the wireless adapter plate is connected with the solid-state relay board card.
Furthermore, the micro control unit is provided with a USB interface and is connected with an industrial personal computer through the USB interface.
Compared with the prior art, the utility model has the beneficial effects that:
the utility model is mainly applied to the semi-automatic/automatic testing industry of electronic consumption intelligent products, and some automatic testing equipment needs to carry out multi-channel voltage test on the PCBA of a client so as to judge whether the PCBA to be tested is normal. The utility model adopts the solid-state relay board card to switch the multi-channel voltage signal, so that the multi-channel voltage signal is switched to the DMM voltage measuring end, the voltage measurement of the PCBA is completed, the voltage of the PCBA of a client is accurately measured, and the test value meets the test requirement of the client. The volume is small, the service life is long, the interference to external signals is small, and the standard board card can be used repeatedly. The volume of the automatic test equipment is greatly reduced, the service life of the automatic test equipment is prolonged, interference signals of the test equipment are reduced, and the automatic test era trend which is miniaturized, reusable and reliable is more and more satisfied. When the number of voltage signals to be switched is more, the advantages of the board card are more obvious, the size is small, the service life is longer, the reliability is higher, the repeated utilization rate is higher, and stable test performance provides better choices for customers.
The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical solutions of the present invention more clearly understood and to implement them in accordance with the contents of the description, the following detailed description is given with reference to the preferred embodiments of the present invention and the accompanying drawings. The detailed description of the present invention is given in detail by the following examples and the accompanying drawings.
Drawings
The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the utility model and together with the description serve to explain the utility model without limiting the utility model. In the drawings:
fig. 1 is a schematic block diagram of a solid-state relay board card according to the present invention;
fig. 2 is a schematic block diagram of a multi-channel voltage signal switching apparatus according to the present invention.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and the detailed description, and it should be noted that any combination of the embodiments or technical features described below can be used to form a new embodiment without conflict.
A solid-state relay board card is shown in figure 1 and comprises a voltage conversion chip, a plurality of LED driving chips and a plurality of solid-state relays, wherein the voltage conversion chip is connected with the LED driving chips, and the voltage conversion chip and the LED driving chips are connected with the solid-state relays.
In one embodiment, the voltage conversion chip is a 5V to 3.3V voltage conversion chip. The voltage conversion chip from 5V to 3.3V adopts TLV1117-33IDCYR chip. The number of the LED driving chips is 4, and the LED driving chips adopt STP16CP05TTR chips. The number of the solid-state relays is 64, and the solid-state relays adopt AQY212SX chips, so that the switching of 64 paths of voltage signals can be controlled. The voltage conversion chip supplies power to the LED driving chip and the solid-state relay, the MCU (micro control unit) controls the connection and disconnection of the solid-state relay through the LED driving chip, and a voltage signal to be switched is output through the switching of the solid-state relay.
A multi-channel voltage signal switching device is shown in fig. 1 and fig. 2 and comprises a solid-state relay board card, a mother board, a micro control unit (MCU board in fig. 2), a digital multimeter (DMM in fig. 2), a power supply and a wireless adapter board (WIB board in fig. 2), wherein the solid-state relay board card, the micro control unit and the digital multimeter are connected with the power supply. In this embodiment, 5V is required to supply power to the MCU board, the solid state relay board, and the DMM board. The solid-state relay board card, the micro control unit and the digital multimeter are all provided with connectors. In fig. 1, there are 3 connectors of the solid-state relay board card, which are respectively a connector 1, a connector 2, and a connector 3. The solid-state relay board card, the micro control unit and the digital multimeter are all plugged on the motherboard through connectors, the connectors of the solid-state relay board card are connected with the connectors of the micro control unit and the connectors of the digital multimeter through circuits on the motherboard, the connectors of the micro control unit and the connectors of the digital multimeter are connected through circuits on the motherboard, and the wireless adapter plate is connected with the solid-state relay board card.
The PCBA that the customer awaited measuring passes through the probe and switches to the WIB board on, the WIB board will the multichannel voltage signal input that awaits measuring to the solid state relay integrated circuit board, the solid state relay integrated circuit board is controlled to the MCU board, switch corresponding passageway to DMM board, the voltage value that the DMM board will measure this passageway is given the MCU board for, then MCU again control solid state relay integrated circuit board switches another voltage signal to the DMM board, the DMM board gives the MCU board with the voltage value that this passageway measures again, and so on. The micro control unit is provided with a USB interface and is connected with an industrial personal computer (IPC in figure 2) through the USB interface. All control commands are sent to the MCU board by the IPC and then sent downwards.
The foregoing is merely a preferred embodiment of the utility model and is not intended to limit the utility model in any manner; those skilled in the art can readily practice the utility model as shown and described in the drawings and detailed description herein; however, those skilled in the art should appreciate that they can readily use the disclosed conception and specific embodiments as a basis for designing or modifying other structures for carrying out the same purposes of the present invention without departing from the scope of the utility model as defined by the appended claims; meanwhile, any changes, modifications, and evolutions of the equivalent changes of the above embodiments according to the actual techniques of the present invention are still within the protection scope of the technical solution of the present invention.
Claims (9)
1. The utility model provides a solid-state relay integrated circuit board which characterized in that: the LED driving circuit comprises a voltage conversion chip, a plurality of LED driving chips and a plurality of solid-state relays, wherein the voltage conversion chip is connected with the LED driving chips, and the voltage conversion chip and the LED driving chips are connected with the solid-state relays.
2. The solid state relay board of claim 1, wherein: the voltage conversion chip is a 5V to 3.3V voltage conversion chip.
3. The solid state relay board of claim 2, wherein: the 5V to 3.3V voltage conversion chip adopts TLV1117-33IDCYR chip.
4. The solid state relay board of claim 1, wherein: the number of the LED driving chips is 4.
5. The solid state relay board of claim 4, wherein: the number of the solid-state relays is 64.
6. The solid state relay board of claim 4, wherein: the LED driving chip adopts an STP16CP05TTR chip.
7. The solid state relay board of claim 5, wherein: the solid state relay adopts AQY212SX chips.
8. A multi-channel voltage signal switching apparatus, comprising: comprising the solid state relay board, motherboard, micro control unit, digital multimeter, power supply, wireless adapter board of any one of claims 1 to 7, the solid-state relay board card, the micro-control unit and the digital multimeter are connected with the power supply, the solid-state relay board card, the micro-control unit and the digital multimeter are all provided with connectors, the solid-state relay board card, the micro-control unit and the digital multimeter are all plugged on the motherboard through connectors, the connector of the solid state relay board card is connected with the connector of the micro control unit and the connector of the digital multimeter through a circuit on a motherboard, the connector of the micro control unit is connected with the connector of the digital multimeter through a circuit on a motherboard, and the wireless adapter plate is connected with the solid-state relay board card.
9. A multi-channel voltage signal switching apparatus as claimed in claim 8, wherein: the micro control unit is provided with a USB interface and is connected with an industrial personal computer through the USB interface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122037561.7U CN216285576U (en) | 2021-08-26 | 2021-08-26 | Solid-state relay board card and multichannel voltage signal switching device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122037561.7U CN216285576U (en) | 2021-08-26 | 2021-08-26 | Solid-state relay board card and multichannel voltage signal switching device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216285576U true CN216285576U (en) | 2022-04-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122037561.7U Active CN216285576U (en) | 2021-08-26 | 2021-08-26 | Solid-state relay board card and multichannel voltage signal switching device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216285576U (en) |
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2021
- 2021-08-26 CN CN202122037561.7U patent/CN216285576U/en active Active
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