A data acquisition terminal

Abstract

The utility model provides a kind of data acquisition terminal, including host module and light supplement module;Host module includes processor and camera module, camera module is electrically connected with processor, for shooting and obtaining the data information to be collected;Light supplement module includes light supplement lamp holder and brightness adjusting circuit, brightness adjusting circuit is electrically connected with light supplement lamp holder and processor respectively, for adjusting the brightness of light supplement lamp holder according to the intensity of ambient light.The data acquisition terminal implemented by the utility model can adaptively adjust the brightness of light supplement lamp holder according to the intensity of ambient light, so that the camera module can take clear enough and high-identifiable photos, thereby improving the accuracy of data acquisition, and realizing the accurate input of meter number.

Description

Technical Field

[0001] This utility model relates to the field of data acquisition, and in particular to a data acquisition terminal. Background Technology

[0002] With the acceleration of urbanization and the development of smart city systems, various intelligent metering instruments such as water meters, electricity meters, and gas meters have been widely adopted in industrial enterprises and residential communities. Currently, after the initial installation of these intelligent metering instruments, staff need to use handheld terminal devices to collect meter numbers in locations such as pipe wells or equipment rooms and input them into the corresponding data acquisition system.

[0003] However, these intelligent metering instruments are installed in various environments with varying lighting conditions, and existing methods such as manually reading meter numbers or using QR codes to read meter numbers are prone to data collection errors. Utility Model Content

[0004] In view of the above problems, a data acquisition terminal is proposed to overcome or at least partially solve the above problems, so as to solve the problem that lighting conditions affect the accuracy of data acquisition when collecting meter numbers on measuring instruments.

[0005] To address the aforementioned problems, this utility model discloses a data acquisition terminal, comprising a host module and a supplementary lighting module;

[0006] The host module includes a processor and a camera module; the camera module is electrically connected to the processor and is used to capture and acquire data information to be collected.

[0007] The supplementary lighting module includes a supplementary light head and a brightness adjustment circuit; the brightness adjustment circuit is electrically connected to the supplementary light head and the processor respectively, and is used to adjust the brightness of the supplementary light head according to the intensity of ambient light.

[0008] Optionally, the brightness adjustment circuit includes: a photoresistor and a driving circuit;

[0009] The photoresistor is electrically connected between the power supply and the ground terminal, and the signal output terminal of the photoresistor is electrically connected to the processor. The driving circuit is electrically connected between the processor and the fill light head.

[0010] The photoresistor is used to convert ambient light signals into analog electrical signals and output them to the processor; the driving circuit is used to receive the PWM signal generated by the processor based on the analog electrical signals and control the fill light head.

[0011] Optionally, the fill light head includes an LED panel and a lens;

[0012] The lens is positioned on the side of the LED light panel corresponding to the side from which the light is emitted, and the lens is a symmetrical lens.

[0013] Optionally, the lens has a Fresnel pattern on the side near the LED panel, and the beam diffusion angle of the Fresnel pattern is 60°;

[0014] The lens has a prism structure on the side away from the LED light panel, and the beam deflection angle of the prism structure is 15°.

[0015] Optionally, the supplementary light head includes a distance sensor, a drive motor, and a transmission mechanism;

[0016] The distance sensor is electrically connected to the processor and is used to detect the distance between the LED light panel and the object to be collected;

[0017] The drive motor is electrically connected to the processor, and the drive motor is also connected to the input end of the transmission mechanism. The output end of the transmission mechanism is connected to the LED light panel or the lens.

[0018] The transmission mechanism is used to adjust the distance between the LED light panel and the lens under the drive of the drive motor, according to the control command issued by the processor.

[0019] Optionally, the fill light head further includes a honeycomb grid, which is disposed on the side of the lens away from the LED light panel.

[0020] Optionally, the supplementary lighting module further includes a gimbal mechanism and a supplementary lighting base;

[0021] The fill light base is connected to the host module and to the gimbal mechanism. The gimbal mechanism is connected to the fill light head. The gimbal mechanism has at least one degree of rotational freedom along a first direction and a second direction, driving the fill light head to rotate. The first direction and the second direction are perpendicular to each other.

[0022] Optionally, the gimbal mechanism is rotatably connected to the fill light head, and the axis of rotation of the fill light head relative to the gimbal mechanism is set along a third direction; the third direction is perpendicular to both the first direction and the second direction.

[0023] Optionally, the host module further includes a wireless communication device electrically connected to the processor, wherein the wireless communication device integrates an encryption unit for encrypting data before transmission.

[0024] Optionally, the terminal further includes a housing, which is provided with a magnetic connection portion to adsorb and fix the terminal.

[0025] The embodiments of this utility model have the following advantages:

[0026] When the data acquisition terminal of this utility model collects the meter number of the metering instrument, regardless of whether the data acquisition terminal is in a strong or weak light environment, the supplementary light module can adaptively adjust the brightness of the supplementary light head according to the intensity of the ambient light, so that the camera module can capture a sufficiently clear and highly recognizable photo, thereby improving the accuracy of data acquisition and realizing the accurate entry of the meter number of the metering instrument. Attached Figure Description

[0027] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments and descriptions of this application are used to explain this application and do not constitute an undue limitation of this application. In the drawings:

[0028] Figure 1 This is a simplified structural diagram of a data acquisition terminal according to this utility model;

[0029] Figure 2 This is a schematic diagram of the circuit hardware structure of a data acquisition terminal according to this utility model;

[0030] Figure 3 This is a simplified structural diagram of a supplementary lighting module according to this utility model;

[0031] Figure 4 This is a schematic diagram of the hardware structure of a brightness adjustment circuit according to this utility model.

[0032] Figure 5 This is a schematic diagram of the circuit principle of a brightness adjustment circuit according to this utility model;

[0033] Figure 6 This is a simplified structural diagram of a fill light lamp head according to this utility model;

[0034] Figure 7 This is a simplified front view of a data acquisition terminal according to this utility model;

[0035] Figure 8 This is a simplified schematic diagram of the light spot shape of a supplementary lighting module according to this utility model;

[0036] Figure 9 This is a simplified structural diagram of the second type of supplementary lighting lamp head of this utility model;

[0037] Figure 10 This is a simplified schematic diagram of the shape of a honeycomb grid according to this utility model;

[0038] Figure 11 This is a simplified structural diagram of the third type of supplementary light head of this utility model.

[0039] Explanation of reference numerals in the attached figures:

[0040] Main unit module-10, processor-102, camera module-103, button input module-104, voice recognition module-105, display screen-106, wireless communication device-107, supplementary lighting module-20, supplementary light base-201, supplementary light head-202, brightness adjustment circuit-203, pan-tilt mechanism-204, LED light panel-2021, lens-2022, distance sensor-2023, drive motor-2024, transmission mechanism-2025, lead screw-2025a, slider-2025b, honeycomb grid-2026, photoresistor-2031, drive circuit-2032. Detailed Implementation

[0041] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0042] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and the number of objects is not limited; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0043] The terms "comprising," "including," or any other variations thereof used in the specification and claims of this application are intended to cover a non-exclusive inclusion, such that a process, method, article, or terminal device that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or terminal device. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or terminal device that includes said element.

[0044] Smart water meters, electricity meters, and gas meters each have a unique meter number, which includes one or more of the following information: manufacturer, model, specifications, production batch, and serial number. Urban water, electricity, and gas supply service providers must link the meter number to the corresponding user account number so that the user's usage can be accurately measured.

[0045] Currently, a type of portable handheld data acquisition terminal is available on the market, allowing staff to quickly collect meter number data at the instrument installation and construction site. This handheld terminal is an electronic device similar to a mobile phone. Staff simply input the meter number information they see on-site into the terminal for storage to complete the data collection task. Then, they return to the operating service company to match the meter numbers with the user account numbers.

[0046] However, these metering instruments of different functions are usually installed in confined spaces such as pipe wells and equipment rooms with varying lighting conditions. When operators use handheld data acquisition terminals, it is difficult to see the correct meter number when the ambient light is weak or dim. When the ambient light is strong, the strong reflection on the instrument nameplate can also make it difficult to accurately identify the meter number, thus affecting the accuracy of the metering instrument number.

[0047] Therefore, the data acquisition terminal provided in this application, while possessing the portability of a traditional handheld acquisition terminal, can also automatically adjust the supplementary light intensity according to the strength of ambient light, reducing interference from ambient light and thus improving the accuracy of data acquisition.

[0048] like Figure 1 and Figure 2 As illustrated, the data acquisition terminal of this embodiment includes a host module 10, which includes a processor 102 and a camera module 103. A battery can be used in the host module 10 to power the processor 102, the camera module 103, and other circuit components. The power supply circuit and other circuit structures corresponding to the battery can adopt the same or similar schemes as other commonly used handheld smart terminals; this embodiment will not elaborate on these details.

[0049] In this embodiment of the invention, the operator holds a data acquisition terminal and points the camera module 103 toward the area containing the table number information. After the camera module 103 captures an image containing the table number information, the processor 102 uses its built-in OCR algorithm to extract the character information corresponding to the table number in the image and store it in the memory. Therefore, the data acquisition terminal of this embodiment provides a method for data acquisition and input using image recognition technology, which helps reduce the probability of errors when visually observing or manually inputting character data.

[0050] Of course, in some embodiments, the data acquisition terminal of this utility model may also include a conventional key input module 104, which is electrically connected to the processor 102. Operators can input the meter number into the data acquisition terminal by triggering the corresponding key on the key input module 104. Additionally, the data acquisition terminal may also include a microphone or other voice recognition module 105, which is electrically connected to the processor 102. When an operator reads the meter number aloud, the voice recognition module 105 receives the voice information and then records the meter number into the data acquisition terminal using the speech-to-text algorithm built into the processor 102. It should be noted that in this utility model embodiment, the algorithm programs running in the processor 102 and used in conjunction with other hardware are all existing mature solutions and are not within the protection scope of this utility model embodiment. The protection point of this utility model embodiment lies in the entirely new data acquisition terminal formed by different hardware and their circuit connections.

[0051] In addition, such as Figure 1 and Figure 3 As shown, the data acquisition terminal of this embodiment of the present invention also includes a supplementary lighting module 20, which includes a supplementary light lamp head 202 and a brightness adjustment circuit 203. The supplementary light lamp head 202 is a component formed by a lamp housing enclosing LED beads, and is a component that provides supplementary lighting. The brightness adjustment circuit 203 is electrically connected to the processor 102 in the host module 10, and is also electrically connected to the supplementary light lamp head 202. It should be understood that in the data acquisition terminal of this embodiment of the present invention, the supplementary lighting module 20 can share the same battery by setting metal contacts that contact the host module 10. Of course, the supplementary lighting module 20 can also use an independent power supply. This embodiment of the present invention does not limit the power supply method of the supplementary lighting module 20.

[0052] The brightness adjustment circuit 203 in this embodiment can collect the intensity signal of ambient light and adjust the current of the fill light head 202 according to the intensity signal to adjust the brightness of the fill light head 202 accordingly. For example, when the ambient light is strong, the current of the fill light head 202 can be reduced to reduce the brightness of the fill light head 202; when the ambient light is weak, the current of the fill light head 202 can be increased to increase the brightness of the fill light head 202.

[0053] Therefore, when staff use the data acquisition terminal implemented by this utility model to collect meter numbers, regardless of whether the data acquisition terminal is in a strong or weak light environment, the supplementary light module 20 can adaptively adjust the brightness of the supplementary light head 202 according to the intensity of the ambient light, so that the camera module 103 can capture a sufficiently clear and highly recognizable photo, thereby improving the accuracy of data acquisition and realizing the accurate entry of meter numbers.

[0054] Is it optional? See reference. Figure 4 The diagram illustrates the structure of a brightness adjustment circuit 203 according to an embodiment of this utility model. The brightness adjustment circuit 203 includes a photoresistor 2031 and a driving circuit 2032. One end of the photoresistor 2031 is connected to the power supply VCC, and the other end is connected to the ground terminal GND, and is also electrically connected to the processor 102. The photoresistor 2031 utilizes its own photoelectric conversion effect to convert the collected ambient light intensity signal into an analog electrical signal. The signal output terminal of the photoresistor 2031 is electrically connected to one pin of the processor 102. After the analog electrical signal is input to the processor 102, the processor 102 uses its internally integrated analog-to-digital converter to digitize the analog electrical signal, obtaining a PWM signal. The other pin of the processor 102 is electrically connected to the input terminal of the driving circuit 2032. After receiving the PWM signal from the processor 102, the driving circuit 2032 can adjust the brightness of the supplementary light head 202 connected to it.

[0055] Specifically, in Figure 4 On this basis, Figure 5 A circuit diagram of a brightness adjustment circuit 203 is also shown. Figure 5 In this circuit, a voltage divider resistor R1 is connected between the photoresistor 2031 and the ground terminal GND. Resistor R2 and capacitor C1 form a filter unit. The node between resistor R2 and capacitor C1 is also connected to the input terminal of processor 102. That is, the photoresistor 2031 is indirectly connected to processor 102 through the filter unit. Figure 5 As illustrated, processor 102 can be a microcontroller U1 with analog-to-digital conversion function, such as STM32F103C8T6. In other embodiments, it can also be other types of processors. One GPIO pin of processor 102 can be electrically connected as its output terminal to the input terminal of driver circuit 2032 to control the output of PWM signal to driver circuit 2032.

[0056] The driving circuit 2032 can be a driving circuit with a linear buck constant current driver U2 (e.g., QX7138 driver) as the main component. The operating voltage of the linear buck constant current driver U2 can be maintained at about 5.6V by a clamping circuit composed of resistor R4, capacitor C2 and Zener diode D1.

[0057] The input terminal of the linear buck constant current driver U2 is electrically connected to the output terminal of the processor 102, and can receive the PWM signal sent by the processor 102. The output terminal of the linear buck constant current driver U2 is also electrically connected to the gate G of the NMOS transistor Q1. A sampling resistor R3 is connected between the source S of the NMOS transistor Q1 and the ground terminal GND. The aforementioned fill light head 202 is electrically connected between the drain D of the NMOS transistor Q1 and the power supply VCC, and is specifically electrically connected to the LED in the fill light head 202.

[0058] Since the brightness of an LED light is directly proportional to the current flowing through it, combined with... Figure 5 As illustrated, the linear buck constant current driver U2 generates a drive signal based on the PWM signal. This drive signal is output to the gate G of the NMOS transistor Q1. By changing the duty cycle in the PWM signal, the current flowing through the LED in the fill light head 202 can be altered, thereby changing the brightness of the LED. In other words, in this embodiment, control is achieved through the PWM signal, adjusting the current flowing through the LED to control its brightness.

[0059] Optionally, Figure 6 A simplified structural diagram of a supplementary light head 202 according to an embodiment of the present invention is also shown. The supplementary light head 202 includes an LED light panel 2021 and a lens 2022. The lens 2022 is disposed on the side of the LED light panel 2021 from which light is emitted, and the lens 2022 is an asymmetrical lens, meaning that the two sides of the lens 2022 have different shapes. Therefore, when light passes through the lens 2022, it can form a non-circular light spot. Specifically, the shape of the two surfaces of the asymmetrical lens can be determined according to the shape of the measuring instrument and the arrangement direction of the meter numbers on the instrument, so that the light spot can completely cover the meter number area.

[0060] Optionally, in one embodiment, the lens 2022 described above has a Fresnel pattern on the side near the LED light panel 2021, and the beam diffusion angle of the Fresnel pattern is 60°. The side away from the LED light panel 2021 has a prism structure, and the beam deflection angle of the prism structure is 15°. Therefore, the light spot projected by the supplementary light head 202 of this embodiment can be an elliptical light spot with a horizontal diffusion angle of 60° and a vertical diffusion angle of 30°. This narrow elliptical light spot along the horizontal direction can simultaneously provide supplementary lighting for multiple metering instruments placed side-by-side, thereby improving the efficiency of meter reading acquisition.

[0061] It should be noted that the horizontal and vertical directions here are based on the assumption that the worker is holding the data acquisition terminal with the rear camera module 103 and the supplementary lighting module 20 facing the meter number to be collected. For example, as Figure 7The diagram illustrates the front view of the data acquisition terminal equipped with a display screen 106. The camera module 103 and the supplementary lighting module 20 are both located on the back. The X direction in the diagram represents the horizontal direction, and the Y direction represents the vertical direction. The light spot shapes formed by the supplementary lighting module 20 corresponding to the X and Y directions in the diagram are as follows: Figure 8 As shown.

[0062] Alternatively, in one implementation, such as Figure 9 As illustrated, the supplementary lighting head 202 also includes a distance sensor 2023, a drive motor 2024, and a transmission mechanism 2025. The distance sensor 2023 is electrically connected to the aforementioned processor 102. The distance sensor 102 can be a photoelectric distance sensor or an ultrasonic distance sensor. The distance sensor 2023 can detect the distance between the LED light panel 1021 and the instrument to be sampled. The processor 102 can control the operation of the drive motor 2024 connected to the processor 102 based on the distance signal collected by the distance sensor 2023. When the drive motor 2024 operates, it further drives the movement of the transmission mechanism 2025, which is also connected to the LED light panel 1021 or the lens 1022. Under the action of the transmission mechanism 2025, the distance between the LED light panel 1021 and the lens 1022 increases or decreases.

[0063] For example, the transmission mechanism 2025 in this embodiment can be a "lead screw and slider" mechanism. The output shaft of the drive motor 2024 is fixedly connected to the lead screw 2025a, and the slider 2025b is sleeved on the lead screw 2025a and threadedly connected to it. The slider 2025b is also fixedly connected to the lens 1022, and the lens 1022 can move relative to the LED light panel 1021. When the distance sensor 2023 detects that the distance between the LED light panel 1021 and the instrument to be collected is large, in order to ensure sufficient lighting effect, the drive motor 2024 adjusts the distance between the LED light panel 1021 and the lens 1022 through the transmission mechanism 2025, so that the object distance changes, thereby making the light spot larger. Conversely, when the distance sensor 2023 detects that the distance between the LED light panel 1021 and the instrument to be collected is small, in order to focus on the meter number area, the drive motor 2024 adjusts the distance between the LED light panel 1021 and the lens 1022 through the transmission mechanism 2025, so that the object distance changes and the light spot becomes smaller.

[0064] Alternatively, in one implementation, such as Figure 9 As illustrated, the fill light head 202 also includes a honeycomb grid 2026, which is located on the side of the lens 2022 away from the LED light panel 1021. Figure 10The shape and structure of the honeycomb grid 2026 are also shown, which has multiple hexagonal through-holes forming a hexagonal honeycomb array. By setting the honeycomb grid 2026 on the outside of the lens 2022, stray light from the fill light can be suppressed, thereby improving the light efficiency.

[0065] Optionally, such as Figure 11 As shown, the supplementary lighting module 20 also includes a pan-tilt mechanism 204 and a supplementary light base 201. In this case, the pan-tilt mechanism 204 is connected between the supplementary light head 202 and the supplementary light base 201. Additionally, as... Figure 3 , Figure 4 , Figure 9 As shown, a connecting part for fixing to the main unit module 10 can also be provided on the fill light base 201. After the two are connected through the connecting part, not only is the brightness adjustment circuit 203 electrically connected to the processor 102, but the fill light module 20 is also relatively fixed to the main unit module 10. For example, the two can be connected by threads. The connecting part on the fill light base 201 has an internal thread, and the main unit module 10 has a corresponding external thread. The two can be tightened by screwing to achieve a fixed connection, and the processor 102 in the main unit module 10 can control the drive motor 2024 in the fill light head 202 and the drive circuit 2032 in the brightness adjustment circuit 203. In addition, the fill light base 201 and the main unit module 10 can also be detachably connected by a quick-release buckle structure.

[0066] The gimbal mechanism 204 is equipped with a rotating component, possessing at least two degrees of rotational freedom along a first direction and a second direction, which are perpendicular to each other. Therefore, when the gimbal mechanism 204 is connected to the fill light head 202, the fill light head 202 can have at least two degrees of rotational freedom. For example, the first direction can be the X direction described in the previous embodiment, and the second direction can be the Y direction described in the previous embodiment. The gimbal mechanism 204, with at least two degrees of rotational freedom, allows the fill light head 202 to rotate relative to the fill light base 201 around the first and second directions as axes, respectively. In this embodiment, when the fill light head 202 rotates around the X direction of the previous embodiment, the pitch angle of the fill light head 202 can be adjusted; when the fill light head 202 rotates around the Y direction of the previous embodiment, the horizontal angle of the fill light head 202 can be adjusted. Therefore, the gimbal mechanism 204 connecting the fill light head 202 and the fill light base 201 allows the fill light to have a more flexible and wider range of adjustment angles.

[0067] It should be noted that the specific mechanical structure of the gimbal mechanism 204 can be two sets of interconnected rotating joints, with the axes of the two sets of rotating joints being orthogonal. For example, it can be a gimbal mechanism commonly found in devices such as drones or handheld stabilizers. The gimbal mechanism 204 is an existing mature design, and this embodiment of the utility model will not elaborate on the gimbal mechanism 204. Optionally, in one embodiment, the gimbal mechanism 204 is rotatably connected to the fill light head 202. The axis of rotation of the fill light head 202 relative to the gimbal mechanism 204 is set along a third direction, which is perpendicular to both the first direction and the second direction. For example, when the first direction is the X direction described in the previous embodiment and the second direction is the Y direction described in the previous embodiment, the third direction can be the Z direction, which is perpendicular to both the first direction and the second direction. In this case, the Z direction is perpendicular to the plane from which the light from the fill light head 202 is emitted. When the fill light head 202 rotates relative to the gimbal mechanism 204 in a third direction, it adjusts the horizontal and vertical orientation of the fill light head 202, similar to the landscape and portrait orientations of a mobile phone. Therefore, the increased third-degree of freedom of rotation further enhances the adjustment capabilities of the fill light head 202.

[0068] Alternatively, in one implementation, such as Figure 2 As shown, the host module 10 of this embodiment also includes a wireless communication device 107, such as a 4G communication module. The wireless communication device 107 can remotely and quickly transmit the meter number data collected and identified by the camera module 103 to a predetermined data platform, improving data collection efficiency. Furthermore, data security is paramount in meter reading scenarios. If the meter number is leaked, user information may be illegally obtained, affecting the normal order of operation and management. Therefore, the wireless communication device 107 of this embodiment can be a communication chip with an encryption unit. This communication chip, through a combination of hardware and software, utilizes mature international standard encryption algorithms (such as AES) to convert the plaintext information of the meter number characters collected by the data collection terminal into ciphertext information, and then transmits it wirelessly. This encryption method ensures that even if the data is intercepted during transmission, the true meter number information cannot be recovered without the corresponding key, effectively guaranteeing data security.

[0069] Optionally, in one embodiment, the terminal of this utility model further includes a housing, which is at least an injection-molded shell or a metal shell of the host module 10, and the processor 102 and the camera module 103 are both installed in the housing. It is understood that the housing has necessary openings to expose the lens of the camera module. In addition, the housing is provided with a magnetic connection part. When staff use the data acquisition terminal on-site, the data acquisition terminal can be magnetically attached to a metal pipe or other fixed structure via the magnetic connection part, thereby freeing up their hands to complete other operational tasks.

[0070] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0071] Those skilled in the art will understand that although preferred embodiments of the present invention have been described, those skilled in the art, once they learn the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of the present invention.

[0072] Finally, it should be noted that in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or terminal device that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or terminal device. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or terminal device that includes said element.

[0073] The data acquisition terminal provided by this utility model has been described in detail above. Specific examples have been used to illustrate the principle and implementation of this utility model. The description of the above embodiments is only for the purpose of helping to understand the method and core idea of ​​this utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation and application scope based on the idea of ​​this utility model. Therefore, the content of this specification should not be construed as a limitation of this utility model.

Claims

1. A data acquisition terminal, characterized in that, Includes the main unit module and the fill light module; The host module includes a processor and a camera module; the camera module is electrically connected to the processor and is used to capture and acquire data information to be collected. The supplementary lighting module includes a supplementary light head and a brightness adjustment circuit; the brightness adjustment circuit is electrically connected to the supplementary light head and the processor respectively, and is used to adjust the brightness of the supplementary light head according to the intensity of ambient light.

2. The data acquisition terminal according to claim 1, characterized in that, The brightness adjustment circuit includes: a photoresistor and a driving circuit; The photoresistor is electrically connected between the power supply and the ground terminal, and the signal output terminal of the photoresistor is electrically connected to the processor. The driving circuit is electrically connected between the processor and the fill light head. The photoresistor is used to convert ambient light signals into analog electrical signals and output them to the processor; the driving circuit is used to receive the PWM signal generated by the processor based on the analog electrical signals and control the fill light head.

3. The data acquisition terminal according to claim 1, characterized in that, The fill light head includes an LED panel and a lens; The lens is positioned on the side of the LED light panel corresponding to the side from which the light is emitted, and the lens is an asymmetrical lens.

4. The data acquisition terminal according to claim 3, characterized in that, The lens has a Fresnel pattern on the side near the LED panel, and the beam diffusion angle of the Fresnel pattern is 60°. The lens has a prism structure on the side away from the LED light panel, and the beam deflection angle of the prism structure is 15°.

5. The data acquisition terminal according to claim 3, characterized in that, The supplementary light head includes a distance sensor, a drive motor, and a transmission mechanism; The distance sensor is electrically connected to the processor and is used to detect the distance between the LED light panel and the object to be collected; The drive motor is electrically connected to the processor, and the drive motor is also connected to the input end of the transmission mechanism. The output end of the transmission mechanism is connected to the LED light panel or the lens. The transmission mechanism is used to adjust the distance between the LED light panel and the lens under the drive of the drive motor, according to the control command issued by the processor.

6. The data acquisition terminal according to claim 3 or 5, characterized in that, The fill light head also includes a honeycomb grid, which is disposed on the side of the lens away from the LED light panel.

7. The data acquisition terminal according to claim 1, characterized in that, The supplementary lighting module also includes a gimbal mechanism and a supplementary lighting base; The fill light base is connected to the host module and to the gimbal mechanism. The gimbal mechanism is connected to the fill light head. The gimbal mechanism has at least one degree of rotational freedom along a first direction and a second direction, driving the fill light head to rotate. The first direction and the second direction are perpendicular to each other.

8. The data acquisition terminal according to claim 7, characterized in that, The gimbal mechanism is rotatably connected to the fill light head, and the axis of rotation of the fill light head relative to the gimbal mechanism is set along a third direction; the third direction is perpendicular to both the first direction and the second direction.

9. The data acquisition terminal according to claim 1, characterized in that, The host module also includes a wireless communication device, which is electrically connected to the processor; the wireless communication device integrates an encryption unit for encrypting data before transmission.

10. The data acquisition terminal according to claim 1, characterized in that, The terminal further includes a housing, which is provided with a magnetic connection part to adsorb and fix the terminal.

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