TWI648959B - WIFI product testing system and WIFI product testing method - Google Patents

Abstract

WIFI product detection system and WIFI product detection method. WIFI product testing system includes calibration standards and testing fixtures. The calibration standard includes a main body portion having a WIFI connector. The test fixture includes a test stand and a probe module. The calibration standard is placed on the test stand of the test fixture. When the probe module contacts the WIFI connector, the calibration standard receives the probe module and applies a first high-frequency signal. And generate and output a second high-frequency signal corresponding to the first high-frequency signal to obtain a signal attenuation value between the second high-frequency signal and the first high-frequency signal, and feed back the signal attenuation value to the product to be tested.

Description

WIFI product detection system and WIFI product detection method

The invention relates to a product detection system and a product detection method, and more particularly to a WIFI product detection system and a WIFI product detection method.

Before products with WIFI function are shipped, they usually need to be tested manually using a testing fixture. Generally speaking, when the product is placed on the test fixture, the product will send a WIFI signal, and the value of the WIFI signal sent by the product will be output through the test fixture.

However, since the signal will be attenuated by the detection fixture, the output value of the self-test fixture will be lower than the preset value that the product should output. Therefore, it is necessary to verify the attenuation value of the environment, and to compensate and verify the output value of the product.

The invention provides a WIFI product detection system which provides a correct signal value.

The invention provides a WIFI product detection method capable of obtaining an exact environmental signal attenuation value.

The WIFI product detection system of the present invention includes a calibration standard and a detection jig. The calibration standard includes a main body portion having a plurality of WIFI connectors. The test fixture includes a test station and a probe module. The calibration standard is suitable for being placed on the test station. When the probe module contacts the WIFI connector, the calibration standard receives the first high-frequency signal and corresponds to the first high frequency signal. The frequency signal generates a second high-frequency signal to obtain a signal attenuation value between the second high-frequency signal and the first high-frequency signal, and returns the signal attenuation value to the product to be tested.

In an embodiment of the present invention, the above-mentioned probe module includes a plurality of probes, and the detection jig contacts the WIFI connector through the probe to electrically connect the calibration standard, wherein the probe is a high-frequency probe. The calibration standard also includes multiple detection signal cables. Each WIFI connector includes a signal detection contact, and the detection signal cable is connected to a corresponding signal detection contact.

In an embodiment of the present invention, the WIFI product detection system further includes a network analyzer, and the network analyzer is electrically connected with a calibration standard and a detection jig to calculate the interval between the second high-frequency signal and the first high-frequency signal. Signal attenuation value.

In an embodiment of the present invention, the WIFI product detection system further includes a plurality of products to be tested, wherein the products to be tested are the same as the main body of the calibration standard.

The invention provides a WIFI product detection method, which includes at least the following steps: placing a calibration standard on a test stand of a test fixture; a probe module provided on the test fixture contacts a plurality of WIFI connectors of the calibration standard; The standard applies a first high-frequency signal, and the calibration standard generates a second high-frequency signal corresponding to the first high-frequency signal; and calculates a signal attenuation value between the second high-frequency signal and the first high-frequency signal and attenuates the signal The value is fed back to the product under test.

In an embodiment of the present invention, it further includes a detection jig and a calibration standard electrically connected to the network analyzer to calculate a signal attenuation between the second high-frequency signal and the first high-frequency signal through the network analyzer. value. In addition, before the calibration standard is provided, it can further include the use of a network analyzer to test the calibration standard first.

In an embodiment of the present invention, the frequency of the first high-frequency signal is 2.4 kHz or 5 kHz.

Based on the above, the WIFI product detection system and the WIFI product detection method of the present invention obtain a signal attenuation value by calibrating the standard. The attenuation value can represent the signal attenuation caused by the external environment. Therefore, the attenuation value is fed back to the product to be tested. Signal compensation and verification for the product under test.

In order to make the above features and advantages of the present invention more comprehensible, embodiments are hereinafter described in detail with reference to the accompanying drawings.

FIG. 1 is a schematic diagram of a WIFI product detection system according to an embodiment of the present invention, FIG. 2A is a schematic diagram of a detection jig of FIG. 1, and FIG. 2B is a schematic diagram of a calibration standard of FIG. 1. Please refer to FIG. 1, FIG. 2A and FIG. 2B at the same time. The WIFI product detection system 200 includes a calibration standard 300 and a detection fixture 400. The calibration standard 300 includes a main body portion 310 and a plurality of detection signal cables 320. The main body portion 310 is, for example, a circuit board, and the circuit board has a plurality of WIFI connectors 314, and each WIFI connector 314 has a signal detection contact 312. . The detection signal cable 320 is a cable independent of the main body portion 310, and may be physically connected to the corresponding signal detection contact 312 by means of electric welding. The detection jig 400 includes a detection station 410 and a probe module 420 adapted to move up and down relative to the detection station 410. The detection station 410 has a detection position 410a, and the calibration standard 300 is suitable for being placed at the detection position 410a.

Continuing from the above, in this embodiment, the detection table 410 has a groove, and the detection position 410a is within the range of the groove. The shape of the groove can be set corresponding to the shape of the calibration standard 300, or the shape of the groove is larger than the shape of the calibration standard 300, and other positioning structures can be provided in the groove to achieve that the calibration standard 300 is placed on the In the groove detection position 410a, the position of the calibration standard 300 in the groove is fixed by the positioning structure.

In addition, the above-mentioned detection signal cable 320 may be a SMA cable or a semi-rigid cable, and is selected according to requirements. In addition, the end of the semi-rigid cable or optical fiber cable can use a joint to facilitate electrical connection with other electronic devices, and the joint can be selected according to requirements. For example, the detection signal cable 320 in this embodiment and the The end connected to the signal detection contact 312 may not be provided with a joint, and the joint at the end of the detection signal cable 320 not connected to the signal detection contact 312 may be a fastener. The use of the fastener is beneficial to the detection of the signal cable 320 Can be connected to signal cables of other electronic devices. In more detail, the ends of the detection signal cable 320 that are not connected to the signal detection contact 312 may include a fastener and a signal core, wherein the fasteners and the fasteners of other signal cables are connected to each other to make the detection signal cable The signal cores in 320 are in good contact with the signal cores of other signal cables to provide signal transmission functions.

In addition, the probe module 420 has a plurality of probes 422, and the probe 422 may be a high-frequency probe, as shown in FIG. 3A, where the probe 422 has a probe portion 422a and a cone surrounding the outside of the probe portion 422a.形 环 422b. As shown in FIG. 3B, each WIFI connector 314 has a probe portion 314a and a ring 314b surrounding the probe portion 314a, and the signal detection contact 312 communicates with the probe portion 314a, so that the detection signal cable 320 is soldered Only at the signal detection contact 312 can signal transmission be performed. When testing, the probe portion 422a of the probe 422 of the probe module 420 will correspondingly contact the probe portion 314a of the WIFI connector 314 to achieve electrical connection, and the shape of the ring 422b is matched with the ring 314b. It is ensured that the contact between the probe portion 422a and the probe portion 314a is good, and further, the detection jig 100 is electrically connected to the calibration standard 300 through the signal detection contact 312 communicating with the probe portion 314a.

FIG. 4 is a schematic diagram of the electrical connection between the calibration standard and the network analyzer. Please refer to FIG. 4, the WIFI product detection system 200 further includes a network analyzer 500, and the network analyzer 500 may have a calculation unit 510 built therein. The network analyzer 500 can be electrically connected to the calibration standard 300 via the detection signal cable 320, and the network analyzer 500 is also suitable for being electrically connected to the detection fixture 400. In detail, the network analyzer 500 includes a device body 520 and two signal lines 530a, 530b, where the signal line 530a extends from the signal input terminal of the device body 520, and the signal line 530b extends from the signal output terminal of the device body 520. The signal line 530a extended from the signal input terminal is connected to the WIFI connector 314 provided on the calibration standard 300, and the signal line 530b extended from the signal output terminal is connected to the detection signal cable 320 provided on the calibration standard 300. In short, the network analyzer 500 and the calibration standard 300 form a closed loop. In this way, the calibration standard 300 can be detected through the network analyzer 500.

In addition, please refer to FIG. 5. FIG. 5 is a schematic diagram of the detection jig electrically connected to the signal analyzer for detection. FIG. 6 is a schematic diagram of a product to be tested, and FIG. 7 is a flowchart of steps of a WIFI product detection method. Please refer to FIG. 4 and FIG. 7 at the same time. When the aforementioned WIFI product detection system 200 is used for detection, in step S110, the network analyzer 500 is first used to detect whether the calibration standard 300 conforms to the specification. Specifically, in step S112, the network analyzer 500 and the calibration standard 300 are electrically connected using the signal lines 530a and 530b. In this embodiment, the signal line 530a can be connected to the WIFI connector 314 by means of buckling, screwing, etc., and the signal line 530b is physically connected to the detection signal cable 320 to achieve the network analyzer 500 and Purpose of calibration standard 300 electrical connection. Since the end of the detection signal cable 320 is provided with a fastener (not shown) and a signal core (not shown), the fastener of the detection signal cable 320 can be combined with the fastener of the signal line 530b. The signal line 530b is, for example, an optical fiber cable, and the signal core of the detection signal cable 320 contacts the signal core of the optical fiber cable. Since there is an insulation layer between the fastener and the signal core, the signal core can be prevented from contacting the fastener. Grounding causes signal transmission failure.

In step S114, the network analyzer 500 outputs a pre-detection signal to the calibration standard 300. The pre-detection signal is output to the signal detection contact 312 (shown in FIG. 2B) of the calibration standard 300 through the signal line 530b, and the calibration standard 300 is calibrated. The signal after detection is output to the network analyzer 500 through the signal line 530a. The signal after detection may have an attenuation value compared to the signal before detection, but as long as the signal after detection is within the expected range, it is confirmed that the calibration standard 300 is in compliance with Norms can be used as normative standards.

Please refer to FIG. 1, FIG. 2A, and FIG. 5 at the same time. In step S120 (shown in FIG. 7), after confirming that the calibration standard 300 meets the requirements, place the calibration standard 300 on the testing table 410 of the testing fixture 400. 410a (that is, in the groove), and the probe module 420 of the test fixture 400 is lowered relatively close to the detection platform 410, and the probe portion 422a of the probe 422 of the probe module 420 (shown in the figure) 3A) The probe portion 314a of the WIFI connector 314 of the calibration standard 300 (shown in FIG. 3B).

After that, in step S130 (shown in FIG. 7), the network analyzer 500 applies the first high-frequency signal S1 to the calibration standard 300 through the detection signal cable 320, and the calibration standard 300 receives the first high-frequency signal S1 and transmits it. The second high-frequency signal S2 goes to the network analyzer 500. In detail, the calibration standard 300 receives the first high-frequency signal S1 through the detection signal cable 320, and the calibration standard 300 passes the detection of the probe 422 (shown in FIG. 3A) of the probe module 420 of the test fixture 400. The needle portion 422a (shown in FIG. 3A) transmits a second high-frequency signal S2 corresponding to the first high-frequency signal S1 to the network analyzer 500. Then, a calculation unit 510 (shown in FIG. 4) in the network analyzer 500 calculates a signal attenuation value between the second high-frequency signal S2 and the first high-frequency signal S1. Since the first high-frequency signal S1 is only subjected to a calibration standard The product 300 and the detection jig 400, therefore, the signal attenuation value is the signal attenuation caused by the detection environment (for example, the detection jig 400). Then, the signal attenuation value is fed back to the product under test.

Generally, the product under test 700 (shown in Figure 6) sends a high frequency signal to the network analyzer 500 for signal detection. Generally, the signal sent by the product under test 700 and the signal received by the network analyzer 500 may be different due to the influence of the detection environment. Therefore, the signal attenuation value is obtained through the WIFI product detection method of this embodiment, and the signal to be sent by the product under test 700 is instructed to add the signal attenuation value to remove the influence of the detection environment on the WIFI signal attenuation caused by the WIFI product.

In this embodiment, the frequency of the first high-frequency signal S1 is 2.4 kHz or 5 kHz, but it is not limited to the frequencies exemplified in this embodiment.

Then, in step S140, the signal attenuation value is fed back to the product 700 to be tested, and the product 700 to be tested is sequentially placed in the detection position 410a of the test stand 410 of the test fixture 400 for individual detection. The main body part 310 of the product 300 is the same, but the detection signal cable 320 is not provided on the product 700 to be tested.

In particular, after the attenuation value caused by environmental factors (for example, the detection fixture 400) is compensated back to the product under test 700, even if the signal fixture is attenuated due to the detection fixture 400 being clamped to detect the product under test 700, the product under test 700 The output signal value can still detect whether the signal range meets the expected specifications.

In summary, in the WIFI product detection system and the WIFI product detection method of the present invention, the probe of the probe module and the test stand are integrated into a detection jig, and the probe module can move directly downward to contact the product to be tested. , Can prevent the signal movement caused by the operator holding the probe shaking, avoid other conductors (for example, the operator's hand) interfere with high-frequency signals and whether the probe and the signal detection contact of the product under test are in accurate contact problem.

In addition, the calibration standard can be used to calculate the signal attenuation value caused by the detection environment, and feed back the attenuation value to the product to be tested, so that the signal value detected by the product to be tested using the detection jig meets specifications.

Although the present invention has been disclosed as above with the examples, it is not intended to limit the present invention. Any person with ordinary knowledge in the technical field can make some modifications and retouching without departing from the spirit and scope of the present invention. The protection scope of the present invention shall be determined by the scope of the attached patent application.

100‧‧‧Testing fixture

110‧‧‧High frequency probe

120‧‧‧ Platform

130‧‧‧Signal connector

200‧‧‧WIFI Product Inspection System

300‧‧‧ Calibration Standard

312‧‧‧Signal detection contact

314‧‧‧WIFI connector

314a, 422a‧‧‧Probe Division

314b‧‧‧circle

320‧‧‧test signal cable

400‧‧‧Testing fixture

410‧‧‧test station

410a‧‧‧ Detection location

420‧‧‧Probe Module

422‧‧‧Probe

422b‧‧‧ tapered ring

500‧‧‧ Network Analyzer

510‧‧‧ Computing Unit

520‧‧‧device body

530a, 530b‧‧‧ signal line

700‧‧‧Products to be tested

S1‧‧‧The first high frequency signal

S2‧‧‧Second high frequency signal

S110 ~ S140‧‧‧step

FIG. 1 is a schematic diagram of a WIFI product detection system according to an embodiment of the present invention. FIG. 2A is a schematic diagram of the detection jig of FIG. 1. FIG. 2B is a schematic diagram of the calibration standard of FIG. 1. FIG. 3A is a schematic diagram of a probe of a probe module. FIG. 3B is a schematic diagram of a WIFI connector. FIG. 4 is a schematic diagram of the electrical connection between the calibration standard and the network analyzer. FIG. 5 is a schematic diagram of the detection jig electrically connected to a signal generator and a signal analyzer for detection. FIG. 6 is a schematic diagram of a product to be tested. FIG. 7 is a flowchart of steps of a WIFI product detection method.

Claims (8)

A WIFI product detection system includes: a calibration standard, including a body portion, the body portion having a plurality of WIFI connectors, the calibration standard further includes a plurality of detection signal cables, and each of the WIFI connectors includes a signal detection Contacts, the detection signal cables are connected to the corresponding signal detection contacts, and the ends of the detection signal cables are provided with a fastener, a signal core, and a signal core between the fastener and the signal core An insulating layer; and a test fixture, including a test stand and a probe module, the calibration standard is suitable for being placed on the test stand, and when the probe module contacts the WIFI connectors, the calibration standard The product receives a first high-frequency signal and generates a second high-frequency signal corresponding to the first high-frequency signal to obtain a signal attenuation value between the second high-frequency signal and the first high-frequency signal, and The signal attenuation value is fed back to a product under test. The WIFI product detection system according to item 1 of the scope of patent application, wherein the probe module includes a plurality of probes, and the detection jig contacts the WIFI connectors through the probes to electrically connect the calibration standards. These probes are high frequency probes. The WIFI product detection system according to item 1 of the scope of patent application, further includes a network analyzer, which is electrically connected to the calibration standard and the detection jig to calculate the second high-frequency signal and the first high-frequency signal. Signal attenuation between signals. The WIFI product detection system described in item 1 of the patent application scope further includes a plurality of products to be tested, wherein the products to be tested are the same as the main body of the calibration standard. A WIFI product testing method includes: placing a calibration standard on a testing stand of a testing jig, the calibration standard further including a plurality of detection signal cables, each of the WIFI connectors including a signal detection contact, the The detection signal cables are connected to the corresponding signal detection contacts. The ends of the detection signal cables are provided with a fastener, a signal core, and an insulation layer between the fastener and the signal core. A probe module at the test fixture contacts a plurality of WIFI connectors of the calibration standard; a first high-frequency signal is applied to the calibration standard, and the calibration standard generates a corresponding one of the first high-frequency signal. A second high-frequency signal; and calculating a signal attenuation value between the second high-frequency signal and the first high-frequency signal, and returning the signal attenuation value to a product under test. The WIFI product detection method according to item 5 of the scope of patent application, further comprising electrically connecting the detection fixture and the calibration standard to a network analyzer to calculate the second high frequency through the network analyzer. A signal attenuation value between the signal and the first high-frequency signal. The WIFI product detection method according to item 6 of the scope of patent application, wherein before providing the calibration standard, the method further includes using the network analyzer to test the calibration standard first. The WIFI product detection method according to item 5 of the scope of patent application, wherein the frequency of the first high-frequency signal is 2.4 kHz or 5 kHz.