Handheld test fixture

Abstract

The embodiment of the utility model provides a handheld test fixture. The handheld test fixture comprises an antenna circuit; the wireless transmitting circuit is connected with the antenna circuit and transmits a radio-frequency signal outwards through the antenna circuit, so that the passive ink screen equipment takes electricity according to the radio-frequency signal; and the wireless communication circuit is connected with the antenna circuit, is in wireless communication with the passive ink screen equipment through the antenna circuit, and enables an ink screen of the passive ink screen equipment to refresh display. Compared with the prior art in which the passive ink screen device is tested after the mobile phone opens the corresponding APP, the handheld test fixture in the embodiment of the utility model can rapidly test the passive ink screen, the test process is more concise and rapid, and the test efficiency is high.

Description

Technical Field

[0001] The present application relates to the field of electronic technology, and in particular to a handheld test fixture. Background Art

[0002] With the development of society, mobile phones have become an indispensable device in people's daily lives. With the increasing number of mobile phone functions, the use scenarios of mobile phones are also increasing, and the time of using mobile phones is also increasing. At present, mobile phones are generally equipped with mobile phone cases to protect the mobile phones. Some mobile phone cases are set with patterns to meet the needs of customers. Some mobile phone cases are equipped with electronic ink screens, and the electronic ink screens can change different display contents as needed. However, when testing mobile phone cases with electronic ink screens in related technologies, a mobile phone with NFC function is required to open the test APP for testing, and the test efficiency is low. Utility Model Content

[0003] The embodiment of the present application provides a handheld test fixture, which has a simpler and faster test process and high test efficiency.

[0004] The present invention provides a handheld test fixture, which includes:

[0005] Antenna circuit;

[0006] A wireless transmitting circuit is connected to the antenna circuit and transmits a radio frequency signal to the outside through the antenna circuit, so that the passive ink screen device draws power according to the radio frequency signal;

[0007] The wireless communication circuit is connected to the antenna circuit, and wirelessly communicates with the passive ink screen device through the antenna circuit, and refreshes the ink screen display of the passive ink screen device.

[0008] In some embodiments, the handheld test fixture further comprises:

[0009] A memory is connected to the wireless communication circuit, and the wireless communication circuit transmits the image information stored in the memory to the passive ink screen device, so that the ink screen of the passive ink screen device refreshes the display according to the image information.

[0010] In some embodiments, the handheld test fixture further comprises:

[0011] A button is connected to the wireless transmitting circuit and the wireless communication circuit. After the button is triggered, it controls the wireless transmitting circuit to transmit or stop transmitting the radio frequency signal, and can also control the wireless communication circuit to connect or disconnect with the passive ink screen device.

[0012] In some embodiments, the handheld test fixture further comprises:

[0013] The housing includes a housing in which the antenna circuit, the wireless transmitting circuit and the wireless communication circuit are arranged. The housing is provided with a mounting opening, and the button is installed at the mounting opening.

[0014] In some embodiments, the housing includes two surface shells and a plurality of side walls, the two surface shells are arranged opposite to each other and spaced apart, and the plurality of side walls include four side walls surrounding the two surface shells and connected in sequence;

[0015] The area of ​​any one of the surface shells is larger than the area of ​​any one of the side walls, and the button is installed on one of the surface shells; the antenna circuit includes an antenna, and the antenna is arranged on one of the side walls.

[0016] In some embodiments, the handheld test fixture further comprises:

[0017] A prompter, when the wireless transmitting circuit transmits the radio frequency signal, the prompter prompts in a first prompting manner, and when the wireless communication circuit establishes communication with the passive ink screen device, the prompter prompts in a second prompting manner.

[0018] In some embodiments, the prompter includes a prompt light, and at least one of the color, brightness, frequency and quantity displayed by the prompt light in the first prompt mode and the second prompt mode is different.

[0019] In some embodiments, the handheld test fixture further comprises:

[0020] The battery is connected to the prompt light, and the prompt light is displayed in a third prompt mode to display the remaining power of the battery.

[0021] In some embodiments, the handheld test fixture further comprises:

[0022] A battery is connected to the wireless transmission circuit and the wireless communication circuit, and supplies power to the wireless transmission circuit and the wireless communication circuit.

[0023] In some embodiments, the antenna circuit includes a universal antenna connected to the wireless transmission circuit and the wireless communication circuit; or

[0024] The antenna circuit includes a first antenna and a second antenna. The first antenna is connected to the wireless transmitting circuit, and the wireless transmitting circuit transmits a radio frequency signal to the outside through the first antenna. The second antenna is connected to the wireless communication circuit, and the wireless communication circuit communicates wirelessly with the passive ink screen device through the second antenna.

[0025] In the handheld test fixture of the embodiment of the present application, the wireless transmitting circuit can transmit a radio frequency signal through the antenna circuit so that the passive ink screen device can draw power through the radio frequency signal. The wireless communication circuit can wirelessly communicate with the passive ink screen device through the antenna circuit and refresh the ink screen of the passive ink screen device. Compared with the related art of opening the corresponding APP on the mobile phone and then testing the passive ink screen device, the handheld test fixture in the embodiment of the present application can quickly test the passive ink screen, and the test process is simpler and faster, and the test efficiency is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application, and those skilled in the art can obtain other drawings based on these drawings without creative work.

[0027] In order to more completely understand the present application and its beneficial effects, the following description will be given in conjunction with the accompanying drawings, wherein the same figure numbers represent the same parts in the following description.

[0028] Figure 1 A schematic diagram of the first structure of the handheld test fixture provided in an embodiment of the present application.

[0029] Figure 2 A second structural schematic diagram of the handheld test fixture provided in an embodiment of the present application.

[0030] Figure 3 This is a third structural schematic diagram of the handheld test fixture provided in an embodiment of the present application.

[0031] Figure 4 This is a fourth structural schematic diagram of the handheld test fixture provided in an embodiment of the present application.

[0032] Figure 5 This is a fifth structural schematic diagram of the handheld test fixture provided in an embodiment of the present application.

[0033] Figure 6 This is a sixth structural schematic diagram of the handheld test fixture provided in an embodiment of the present application.

[0034] Figure 7 This is a seventh structural schematic diagram of the handheld test fixture provided in an embodiment of the present application.

[0035] Figure 8 This is a schematic diagram of the eighth structure of the handheld test fixture provided in the embodiment of the present application.

[0036] Fig. 9A schematic diagram of the structure of a handheld test fixture and a passive ink screen device provided in an embodiment of the present application.

[0037] Description of reference numerals:

[0038] 100, handheld test fixture, 110, antenna circuit, 112, universal antenna, 114, first antenna, 116, second antenna, 120, wireless transmission circuit, 130, wireless communication circuit, 140, memory, 150, button, 160, housing, 161, mounting port, 162, face shell, 164, side wall, 170, reminder, 180, battery;

[0039] 200. Passive ink screen device, 210. Mobile phone case, 220. Ink screen, 230. Passive driving circuit. DETAILED DESCRIPTION

[0040] The technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application.

[0041] The present application embodiment provides a handheld test fixture. Figure 1 , Figure 1 A first structural diagram of a handheld test fixture provided in an embodiment of the present application. The handheld test fixture 100 includes an antenna circuit 110, a wireless transmission circuit 120, and a wireless communication circuit 130. The antenna circuit 110 can be connected to an external device such as a passive ink screen device 200. The wireless transmission circuit 120 is connected to the antenna circuit 110, and transmits a radio frequency signal to the outside through the antenna circuit 110, so that the passive ink screen device 200 draws power according to the radio frequency signal. The wireless communication circuit 130 is connected to the antenna circuit 110, and wirelessly communicates with the passive ink screen device 200 through the antenna circuit 110, and refreshes the ink screen display of the passive ink screen device 200.

[0042] The wireless transmitting circuit 120 can transmit a radio frequency signal through the antenna circuit 110 so that the passive ink screen device 200 can draw power through the radio frequency signal. The wireless communication circuit 130 can wirelessly communicate with the passive ink screen device 200 through the antenna circuit 110 and refresh the ink screen display of the passive ink screen device 200. Compared with the related technology in which the mobile phone opens the corresponding APP and then tests the passive ink screen device 200, the handheld test fixture 100 in the embodiment of the present application can quickly test the passive ink screen device 200, and the test process is simpler and faster.

[0043] In some embodiments, see Figure 2 , Figure 2 A second structural diagram of the handheld test fixture provided in an embodiment of the present application. The handheld test fixture 100 also includes a memory 140, which is connected to the wireless communication circuit 130, and the wireless communication circuit 130 transmits the image information stored in the memory 140 to the passive ink screen device 200, so that the ink screen of the passive ink screen device 200 refreshes the display according to the image information.

[0044] The wireless communication circuit 130 sends the image information stored in the memory 140 to the passive ink screen device 200, and the passive ink screen device 200 refreshes the display according to the image information, that is, displays the image corresponding to the image information. In some examples, the memory 140 may store image information corresponding to multiple images, and the passive ink screen device 200 refreshes the multiple images in a sequential cycle or randomly refreshes one of the multiple images. In some other examples, the memory 140 may store image information corresponding to one image, and the passive ink screen device 200 keeps repeatedly refreshing the image.

[0045] The type of the memory 140 can be set as needed, such as flash, and this embodiment does not limit the type of the memory 140.

[0046] In some other embodiments, the wireless communication circuit 130 may send a control instruction to the passive ink screen device 200, and the passive ink screen device 200 refreshes the display according to the image stored therein. In some examples, the passive ink screen device 200 may store image information corresponding to multiple images, and the passive ink screen device 200 may refresh the multiple images in a sequential cycle or randomly refresh one of the multiple images. In some other examples, the passive ink screen device 200 may store image information corresponding to an image, and the passive ink screen device 200 may repeatedly refresh the image.

[0047] In some embodiments, see Figure 3 , Figure 3 The third structural diagram of the handheld test fixture provided in the embodiment of the present application. The handheld test fixture 100 also includes a button 150, which is connected to the wireless transmission circuit 120 and the wireless communication circuit 130. When the button 150 is triggered, the wireless transmission circuit 120 is controlled to transmit or stop transmitting the radio frequency signal, and the wireless communication circuit 130 can also be controlled to connect or disconnect with the passive ink screen device 200.

[0048] The handheld test fixture 100 can be quickly started to enter the test state through the button 150, without the need for cumbersome operations, such as starting the mobile phone or unlocking the mobile phone and entering the operation interface, finding the corresponding APP, opening the corresponding APP, and performing test operations after entering the APP. The handheld test fixture 100 in this embodiment only needs to touch the button to control the handheld test fixture 100 to enter the test state, such as controlling the wireless transmission circuit 120 to transmit radio frequency signals, and can also control the wireless communication circuit 130 to connect with the passive ink screen device 200. The test state can also be exited through the button 150, such as controlling the wireless transmission circuit 120 to stop transmitting radio frequency signals, and can also control the wireless communication circuit 130 to disconnect from the passive ink screen device 200.

[0049] In some examples, the handheld test fixture 100 may have only one button 150, which can be used to wake up and sleep the handheld test fixture 100, making it easy to use. In other examples, the handheld test fixture 100 may be provided with multiple buttons 150, which respectively control different functions of the handheld test fixture 100, such as respectively controlling the handheld test fixture 100 to wake up, sleep, or other operations.

[0050] For some examples, see Figure 4 , Figure 4 The fourth structural schematic diagram of the handheld test fixture provided in the embodiment of the present application. The handheld test fixture 100 also includes a housing 160, an antenna circuit 110, a wireless transmission circuit 120 and a wireless communication circuit 130 are arranged in the housing 160, the housing 160 is provided with an installation port 161, and the button 150 is installed in the installation port 161. The button 150 can be a physical button, which is convenient for the user to press and operate, and the physical button structure is stable and reliable. Of course, in some other examples, the button 150 can also be a touch button or other types of buttons 150.

[0051] In some examples, the housing 160 includes two face shells 162 and a plurality of side walls 164. The two face shells 162 are arranged opposite to each other and spaced apart. The plurality of side walls 164 include four side walls 164 that surround the two face shells 162 and are sequentially connected. The area of ​​any face shell 162 is greater than the area of ​​any side wall 164. The button 150 is mounted on one face shell 162. The antenna circuit 110 includes an antenna, which is arranged on one side wall 164.

[0052] The button 150 is mounted on the larger surface shell 162, so the size of the button 150 can be set larger, and there is more space on the surface shell 162 for setting the structure for mounting the button 150. The mounting strength of the button 150 and the surface shell 162 is greater, and the large-sized button 150 and the surface shell 162 are also convenient for users to press the button 150. The antenna is set on the smaller side wall 164, which is convenient for users to identify the position of the antenna and to align the antenna with the antenna of the external device.

[0053] It should be noted that the handheld test fixture 100 and the passive ink screen device 200 in this example transmit energy through NFC technology, that is, the antenna of the handheld test fixture 100 is an NFC transmitting antenna, and the antenna of the passive ink screen device 200 is an NFC receiving antenna. The NFC transmitting antenna and the NFC receiving antenna need to be aligned when transmitting energy, otherwise it will affect the energy transmission efficiency. If the NFC transmitting antenna is set in a larger surface shell 162, when the surface shell 162 contacts the passive ink screen device 200, because the NFC transmitting antenna is set inside the handheld test fixture 100, and the surface shell 162 is much larger than the NFC transmitting antenna, the position of the NFC transmitting antenna cannot be accurately determined, and it is not convenient to align the NFC transmitting antenna and the NFC receiving antenna. In this example, the size of the NFC transmitting antenna and the side wall 164 are close, and it can also be understood that the size of the NFC transmitting antenna is slightly smaller than the side wall 164. The NFC transmitting antenna is set on the inner side of the side wall 164, and the area where the side wall 164 contacts the passive ink screen device 200 is equivalent to the area directly facing the NFC transmitting antenna, which can facilitate the alignment of the NFC transmitting antenna and the NFC receiving antenna.

[0054] It is understandable that the size of the handheld test fixture 100 is relatively small, much smaller than the size of a mobile phone. In some examples, the width of the side wall 164 of the housing 160 is slightly larger than the width of the NFC transmitting antenna, the length of the side wall 164 can be slightly larger than the length of the NFC transmitting antenna, and the area of ​​the cover 162 can be 2-5 times the area of ​​the side wall 164. In some other examples, the width of the side wall 164 of the housing 160 is slightly larger than the width of the NFC transmitting antenna, the length of the side wall 164 can be 1.5-3 times the width of the side wall 164, and the area of ​​the cover 162 can be 2-8 times the area of ​​the side wall 164.

[0055] In some embodiments, in order to facilitate identification of the side wall 164 corresponding to the antenna, the side wall 164 corresponding to the antenna may be designed to be distinguished from other side walls 164. In some examples, a pattern or logo may be set on the side wall 164 corresponding to the antenna. In some examples, the structure of the side wall 164 corresponding to the antenna may also be distinguished from other side walls 164, for example, the side wall 164 corresponding to the antenna may be provided with a protruding structure, or for another example, a prompt pattern or prompt structure may be set near the side wall 164 corresponding to the antenna on the housing 160, and the prompt structure may be a protruding structure, a groove structure or other structures.

[0056] In some embodiments, the handheld test fixture 100 further includes a prompter 170. When the wireless transmitting circuit 120 transmits a radio frequency signal, the prompter 170 prompts in a first prompting manner. When the wireless communication circuit 130 establishes communication with the passive ink screen device 200, the prompter 170 prompts in a second prompting manner. The prompter 170 can prompt different working states of the handheld test fixture 100 in different prompting manners, which is convenient for users to perform tests. For example, the prompter 170 prompts in a first prompting manner, indicating that the wireless transmitting circuit 120 is transmitting a radio frequency signal, and it can be observed whether the passive ink screen device 200 is started, and whether the energy receiving circuit of the passive ink screen device 200 is normal. The prompter 170 prompts in a second prompting manner, indicating that the wireless communication circuit 130 establishes communication with the passive ink screen device 200, and it can be observed whether the passive ink screen device 200 refreshes and displays a new image, and whether the data receiving circuit, refresh display circuit, and ink screen of the passive ink screen device 200 are normal.

[0057] In some examples, the prompter 170 includes a prompt light, and at least one of the color, brightness, frequency, and quantity displayed by the prompt light in the first prompt mode and the second prompt mode is different. The different display modes of the prompt light can conveniently obtain different working states of the handheld test fixture 100. For example, the prompt light is blue, indicating that the wireless transmission circuit 120 is transmitting a radio frequency signal; the prompt light is green, indicating that the wireless communication circuit 130 has established communication with the passive ink screen device 200. For another example, the prompt light is always blue at low brightness, indicating that the wireless transmission circuit 120 is transmitting a radio frequency signal; the prompt light flashes blue at high brightness, indicating that the wireless communication circuit 130 has established communication with the passive ink screen device 200.

[0058] For some examples, see Figure 5 , Figure 5A fifth structural diagram of a handheld test fixture provided in an embodiment of the present application. The handheld test fixture 100 also includes a battery 180, and the battery 180 is connected to the prompt light of the prompter 170, and the prompt light is displayed in a third prompting mode to display the remaining power of the battery 180. The prompt light can be used to quickly and easily know the remaining power of the battery 180. If the remaining power of the battery 180 is insufficient, the user can be reminded to charge it or replace it with another handheld test fixture 100 with more power for testing. For example, the prompt light has multiple LED lights, and different numbers of LED lights lit or flashing indicate different remaining powers, and the number of lit or flashing LED lights is proportional to the remaining power. For another example, the prompt light has multiple display brightness or multiple flashing frequencies, and different brightness or different flashing frequencies indicate different remaining powers, and the brightness or flashing frequency is proportional to the remaining power.

[0059] In some embodiments, see Figure 6 , Figure 6 The sixth structural diagram of the handheld test fixture provided in the embodiment of the present application. The handheld test fixture 100 also includes a battery 180, which is connected to the wireless transmission circuit 120 and the wireless communication circuit 130, and supplies power to the wireless transmission circuit 120 and the wireless communication circuit 130. The handheld test fixture 100 has a built-in battery 180, which facilitates the testing of the passive ink screen device 200 without the need for an external mobile power supply or a socket connection.

[0060] In some embodiments, see Figure 7 , Figure 7 The seventh structural diagram of the handheld test fixture provided in the embodiment of the present application. The antenna circuit 110 includes a universal antenna 112, which is connected to the wireless transmission circuit 120 and the wireless communication circuit 130. The wireless transmission circuit 120 and the wireless communication circuit 130 share one antenna, which can reduce costs. Among them, the wireless communication circuit 130 can be an NFC communication circuit.

[0061] In some embodiments, see Figure 8 , Figure 8 The eighth structural diagram of the handheld test fixture provided in the embodiment of the present application. The antenna circuit 110 includes a first antenna 114 and a second antenna 116. The first antenna 114 is connected to the wireless transmission circuit 120, and the wireless transmission circuit 120 transmits a radio frequency signal to the outside through the first antenna 114; the second antenna 116 is connected to the wireless communication circuit 130, and the wireless communication circuit 130 communicates wirelessly with the passive ink screen device 200 through the second antenna 116. The wireless transmission circuit 120 and the wireless communication circuit 130 are connected to different antennas respectively, which can reduce the interference between the wireless transmission circuit 120 and the wireless communication circuit 130.

[0062] The wireless communication circuit 130 may be an NFC communication circuit or a Bluetooth communication circuit. When the wireless communication circuit 130 is an NFC communication circuit, the first antenna 114 is an NFC energy antenna and the second antenna 116 is an NFC data antenna. When the wireless communication circuit 130 is a Bluetooth communication circuit, the first antenna 114 is an NFC energy antenna and the second antenna 116 is a Bluetooth antenna.

[0063] It is understandable that the handheld test fixture may include a circuit board, the wireless transmission circuit and the wireless communication circuit may be arranged on the circuit board, and the antenna of the antenna circuit may not be arranged on the circuit board, but may be arranged separately so as to align with the antenna of the passive ink screen device. The handheld test fixture may also include a processor, and the processor may be connected to the wireless transmission circuit, the wireless communication circuit, the button, the battery, the memory, the prompter, etc. to control the wireless transmission circuit, the wireless communication circuit, the button, the battery, the memory, the prompter, etc. In some other examples, the processor may be part of the wireless communication circuit or the wireless transmission circuit.

[0064] If the handheld test fixture is placed on the passive ink screen device for testing, the content displayed on the ink screen of the passive ink screen device will change at regular intervals, ensuring the stability of product performance. The handheld test fixture is small, and one person can operate multiple handheld test fixtures at the same time for testing, which improves test efficiency.

[0065] See also Fig. 9 , Fig. 9 The structure diagram of the handheld test fixture and the passive ink screen device provided in the embodiment of the present application. The passive ink screen device 200 can be a mobile phone shell device, which includes a mobile phone shell 210, an ink screen 220 and a passive driving circuit 230 arranged on the mobile phone shell 210, and the passive driving circuit 230 includes a device communication circuit, a microprocessor and a power supply circuit.

[0066] The device antenna circuit can be wirelessly connected to the handheld test fixture 100. The device communication circuit is connected to the device antenna circuit, and the microprocessor is connected to the device communication circuit. The microprocessor wirelessly communicates with the handheld test fixture 100 through the device communication circuit and the device antenna circuit.

[0067] The power supply circuit is connected to the device antenna circuit to convert the radio frequency signal emitted by the handheld test fixture 100 into electrical energy through the device antenna circuit. The power supply circuit includes a matching circuit, a rectifier circuit and an energy storage circuit. The matching circuit is connected to the device antenna circuit and cooperates to output the first electrical energy. The rectifier circuit is connected to the matching circuit and rectifies the first electrical energy. The energy storage circuit is connected to the rectifier circuit and stores the rectified first electrical energy. The energy storage circuit is used to connect to the ink screen 220 and power the ink screen 220 when the ink screen 220 updates the display content.

[0068] The power supply circuit is connected to the device antenna circuit and can obtain power through the device antenna circuit to power the ink screen 220 when the ink screen 220 updates the displayed content, which is convenient for testing the passive ink screen device 200. The power supply circuit includes a matching circuit, a rectifier circuit and an energy storage circuit connected in sequence. The matching circuit and the device antenna circuit can cooperate to better obtain the radio frequency signal of the handheld test fixture 100. The rectifier circuit can rectify the first power output by the matching circuit, which is convenient for the energy storage circuit to store power.

[0069] The microprocessor and the device communication circuit can wirelessly communicate with the handheld test fixture 100 through the device antenna circuit, such as obtaining a data signal. The ink screen 220 can update the display content according to the data signal, and can easily obtain the data signal corresponding to the new image, thereby facilitating the ink screen 220 to update the display content.

[0070] The matching circuit cooperates with the antenna circuit 110 to output an oscillation wave signal, the rectifier circuit rectifies the oscillation wave signal and outputs a direct current signal, and the energy storage circuit stores the direct current signal.

[0071] In some embodiments, the energy storage circuit may include one or more energy storage capacitors, and multiple energy storage circuits may be connected in parallel or partially in parallel and partially in series.

[0072] It is understandable that the passive ink screen device can also be other devices, such as a passive ink screen nameplate, etc.

[0073] The embodiments, implementation methods and related technical features of the present application can be combined and replaced with each other without conflict. For example, Figure 4-Figure 8 The handheld test fixture in any of the illustrated embodiments may include at least one of a button and a memory. Figure 2-Figure 3 The handheld test fixture in any of the illustrated embodiments may include at least one of a battery and a reminder. Figure 2-Figure 6 The antenna circuit of the handheld test fixture in any of the embodiments shown may include a common antenna or include a first antenna and a second antenna at the same time.

[0074] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0075] The handheld test fixture provided in the embodiment of the present application is introduced in detail above. Specific examples are used in this article to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method of the present application and its core idea; at the same time, for technical personnel in this field, according to the idea of ​​the present application, there will be changes in the specific implementation method and application scope. In summary, the content of this specification should not be understood as a limitation on the present application.

Claims

1. A handheld test fixture, characterized in that: include: Antenna circuit; A wireless transmitting circuit is connected to the antenna circuit and transmits a radio frequency signal to the outside through the antenna circuit, so that the passive ink screen device draws power according to the radio frequency signal; The wireless communication circuit is connected to the antenna circuit, and wirelessly communicates with the passive ink screen device through the antenna circuit, and refreshes the ink screen display of the passive ink screen device.

2. The handheld test fixture according to claim 1, characterized in that: The handheld test fixture further comprises: A memory is connected to the wireless communication circuit, and the wireless communication circuit transmits the image information stored in the memory to the passive ink screen device, so that the ink screen of the passive ink screen device refreshes the display according to the image information.

3. The handheld test fixture according to claim 1, characterized in that: The handheld test fixture further comprises: A button is connected to the wireless transmitting circuit and the wireless communication circuit. After the button is triggered, it controls the wireless transmitting circuit to transmit or stop transmitting the radio frequency signal, and can also control the wireless communication circuit to connect or disconnect with the passive ink screen device.

4. The handheld test fixture according to claim 3, characterized in that: The handheld test fixture further comprises: The housing includes a housing in which the antenna circuit, the wireless transmitting circuit and the wireless communication circuit are arranged. The housing is provided with a mounting opening, and the button is installed at the mounting opening.

5. The handheld test fixture according to claim 4, characterized in that: The housing comprises two surface shells and a plurality of side walls, the two surface shells are arranged opposite to each other and spaced apart, and the plurality of side walls comprise four side walls surrounding the two surface shells and connected in sequence; The area of ​​any one of the surface shells is larger than the area of ​​any one of the side walls, and the button is installed on one of the surface shells; the antenna circuit includes an antenna, and the antenna is arranged on one of the side walls.

6. The handheld test fixture according to claim 1, characterized in that: The handheld test fixture further comprises: A prompter, when the wireless transmitting circuit transmits the radio frequency signal, the prompter prompts in a first prompting manner, and when the wireless communication circuit establishes communication with the passive ink screen device, the prompter prompts in a second prompting manner.

7. The handheld test fixture according to claim 6, characterized in that: The prompter includes a prompt light, and at least one of the color, brightness, frequency and quantity displayed by the prompt light in the first prompt mode and the second prompt mode is different.

8. The handheld test fixture according to claim 7, characterized in that: The handheld test fixture further comprises: The battery is connected to the prompt light, and the prompt light is displayed in a third prompt mode to display the remaining power of the battery.

9. The handheld test fixture according to claim 1, characterized in that: The handheld test fixture further comprises: A battery is connected to the wireless transmission circuit and the wireless communication circuit, and supplies power to the wireless transmission circuit and the wireless communication circuit.

10. The handheld test fixture according to claim 1, characterized in that: The antenna circuit includes a universal antenna connected to the wireless transmission circuit and the wireless communication circuit; or The antenna circuit includes a first antenna and a second antenna. The first antenna is connected to the wireless transmitting circuit, and the wireless transmitting circuit transmits a radio frequency signal to the outside through the first antenna. The second antenna is connected to the wireless communication circuit, and the wireless communication circuit communicates wirelessly with the passive ink screen device through the second antenna.

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