Communication compatible circuit for laser range finder

Abstract

The utility model relates to the technical field of communication circuits, in particular to a communication compatible circuit for a laser range finder, which is provided with a key module, a control module and a communication circuit module, the key module is electrically connected with the control module, the control module is electrically connected with the communication circuit module, and the communication circuit module is connected with a communication interface. In the application, the communication circuit module is controlled by the control module, and the control module adjusts TTL communication, 422 communication and 232 communication line sequences by receiving high and low levels generated by the key module and controlling on and off of an analog switch, so that communication compatibility is realized, and the problem that compatibility cannot be ensured due to different interfaces of an upper computer at present is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of communication circuits, and particularly relates to a communication compatibility circuit for a laser rangefinder. Background Art

[0002] In the context of the information-based and digital age, communication technology has become the key link connecting various designs, systems, and software. As a supporting module for various new devices, a laser rangefinder needs to communicate with a host computer through a communication circuit, receive instructions sent by the host computer, and feedback information such as distance measurement, so as to help the host computer judge the target distance.

[0003] There are various communication methods for laser rangefinders, and common interfaces include 422 communication, TTL communication, 232 communication, etc. With the continuous emergence of various new devices and new systems, the required communication interfaces are quite different. How to meet the different interfaces of various models of host computers in the market and ensure their compatibility has become a problem waiting to be solved. In view of the difference problems of existing communication interfaces, a communication compatibility circuit suitable for laser rangefinders is proposed. Content of the Utility Model

[0004] In view of this, the purpose of the utility model is to provide a communication compatibility circuit for a laser rangefinder to overcome the problem that the compatibility cannot be guaranteed due to different interfaces of the host computer at present.

[0005] To achieve the above purpose, the utility model adopts the following technical solutions:

[0006] The present application provides a communication compatibility circuit for a laser rangefinder, including a key module, a control module, and a communication circuit module;

[0007] The key module is electrically connected to the control module, the control module is electrically connected to the communication circuit module, and the communication circuit module is connected to a communication interface.

[0008] Further, for the above-mentioned communication compatibility circuit, the control module is an MCU chip of model STM32F101CBT6.

[0009] Further, for the above-mentioned communication compatibility circuit, the communication circuit module includes: four chips of model SGM3157YC6 / TR, one chip of model KY3232LEEY, and one chip of model SIT3490EEUA.

[0010] Further, the above-mentioned communication compatibility circuit further includes: a housing;

[0011] The control module and the communication circuit module are arranged in the housing, and the key module and the communication interface are embedded on the surface of the housing.

[0012] Further, in the communication compatibility circuit described above, the key module is a key switch.

[0013] The beneficial effects of the present utility model are as follows:

[0014] This application has a key module, a control module, and a communication circuit module. The key module is electrically connected to the control module, the control module is electrically connected to the communication circuit module, and the communication circuit module is connected to the communication interface. In this application, the communication circuit module is controlled by the control module. By receiving the high and low levels generated by the key module, the control module controls the opening and closing of the analog switch to adjust the line sequences of TTL communication, 422 communication, and 232 communication, thereby achieving communication compatibility and solving the problem that the current compatibility cannot be guaranteed due to different interfaces of the host computer. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0016] Figure 1 is a structural diagram provided by an embodiment of a communication compatibility circuit for a laser rangefinder according to the present utility model;

[0017] Figure 2 is a structural diagram of the control module provided by an embodiment of a communication compatibility circuit for a laser rangefinder according to the present utility model;

[0018] Figure 3 is a structural diagram of the communication circuit module provided by an embodiment of a communication compatibility circuit for a laser rangefinder according to the present utility model. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] To make the objectives, technical solutions, and advantages of the present utility model clearer, the technical solutions of the present utility model will be described in detail below. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other implementation manners obtained by those of ordinary skill in the art without creative efforts fall within the scope protected by the present utility model.

[0020] Figure 1 is a structural diagram provided by an embodiment of a communication compatibility circuit for a laser rangefinder according to the present utility model, as Figure 1As shown in the figure, this embodiment includes: a button module 1, a control module 2, and a communication circuit module 3;

[0021] The button module 1 is electrically connected to the control module 2, the control module 2 is electrically connected to the communication circuit module 3, and the communication circuit module 3 is connected to a communication interface 4.

[0022] It can be understood that this embodiment has a button module 1, a control module 2, and a communication circuit module 3. The button module 1 is electrically connected to the control module 2, the control module 2 is electrically connected to the communication circuit module 3, and the communication circuit module 3 is connected to the communication interface 4. In this application, the communication circuit module 3 is controlled by the control module 2. By receiving the high and low levels generated by the button module 1, the control module 2 controls the opening and closing of the analog switch to adjust the line sequences of TTL communication, 422 communication, and 232 communication, thereby achieving communication compatibility and solving the problem that current compatibility cannot be guaranteed due to different interfaces of the host computer.

[0023] Preferably, the control module 2 is an MCU chip of model STM32F101CBT6.

[0024] Preferably, the communication circuit module 3 includes: four chips of model SGM3157YC6 / TR, one chip of model KY3232LEEY, and one chip of model SIT3490EEUA.

[0025] The 1st pin of the KY3232LEEY chip is connected to the C1+ terminal. The 2nd pin of the KY3232LEEY chip is grounded through a C2 capacitor. One end of the C1 capacitor is connected to the +3.3V power supply and the other end is grounded. The 3rd pin of the KY3232LEEY chip is connected to the C1+ terminal through a C3 capacitor. The 4th pin of the KY3232LEEY chip is connected to the 5th pin through a C4 capacitor. The 6th pin of the KY3232LEEY chip is grounded through a C5 capacitor. The 7th pin of the KY3232LEEY chip is connected to the 232TXD terminal. The 8th pin of the KY3232LEEY chip is connected to the 232RXD terminal. The 9th pin of the KY3232LEEY chip is connected to the UART RXD terminal. The 10th pin of the KY3232LEEY chip is connected to the UART TXD terminal. The 15th pin of the KY3232LEEY chip is grounded. The 16th pin of the KY3232LEEY chip is connected to the +3.3V power supply.

[0026] The 1st pin of the SIT3490EEUA chip is connected to the +3.3V power supply, the 2nd pin of the SIT3490EEUA chip is connected to the UARTRXD terminal, the 3rd pin of the SIT3490EEUA chip is connected to the UART TXD terminal, the 4th pin of the SIT3490EEUA chip is grounded, the 5th pin of the SIT3490EEUA chip is connected to the 422Y terminal, the 6th pin of the SIT3490EEUA chip is connected to the 422Z terminal, the 7th pin of the SIT3490EEUA chip is connected to the 422B terminal, the 8th pin of the SIT3490EEUA chip is connected to the 422A terminal. The 7th pin of the SIT3490EEUA chip is also grounded through the resistor R3, the 8th pin of the SIT3490EEUA chip is also grounded through the resistor R1, and the 8th pin of the SIT3490EEUA chip is also connected to the 7th pin through the resistor R2.

[0027] The 2nd pin of the first and second SGM3157YC6 / TR chips is grounded, the 5th pin is connected to the +3.3V power supply, the 6th pin is connected to the SET1 terminal output by the control module 2. Capacitors C8 and C9 are connected in parallel, one end is grounded, and the other end is connected to the 5th pin of the first SGM3157YC6 / TR chip. Capacitors C12 and C13 are connected in parallel, one end is grounded, and the other end is connected to the 5th pin of the second SGM3157YC6 / TR chip. The 3rd pin of the first SGM3157YC6 / TR chip is connected to the TTL RXD terminal, the 4th pin is connected to the UART RXD terminal, the 3rd pin of the second SGM3157YC6 / TR chip is connected to the TTL TXD terminal, and the 4th pin is connected to the UART TXD terminal.

[0028] The 2nd pin of the third and fourth SGM3157YC6 / TR chips is grounded, the 5th pin is connected to the +3.3V power supply, the 6th pin is connected to the SET2 terminal output by the control module 2. Capacitors C6 and C7 are connected in parallel, one end is grounded, and the other end is connected to the 5th pin of the third SGM3157YC6 / TR chip. Capacitors C10 and C11 are connected in parallel, one end is grounded, and the other end is connected to the 5th pin of the fourth SGM3157YC6 / TR chip. The 3rd pin of the third SGM3157YC6 / TR chip is connected to the 232RXD terminal, the 4th pin is connected to the UART RXD terminal, the 3rd pin of the fourth SGM3157YC6 / TR chip is connected to the 232TXD terminal, and the 4th pin is connected to the UART TXD terminal.

[0029] It should be noted that in this application, the user generates high and low levels through the button module 1, generates digital signals and feeds them back to the control module 2. The control module 2 controls the opening and closing of the analog switch according to the digital signals, generates SET1 and SET2 signal levels, and inputs them into the communication circuit module 3 to adjust the TTL communication, 422 communication, and 232 communication line sequences, so as to achieve communication compatibility.

[0030] It can be understood that in the present application, the specific circuit connection manner between the control module and the communication circuit module is as Figure 2 and Figure 3 shown.

[0031] Preferably, it further includes: a housing;

[0032] The control module and the communication circuit module are arranged in the housing, and the button module and the communication interface are inlaid on the surface of the housing.

[0033] Preferably, the button module is a button switch.

[0034] It can be understood that the same or similar parts in the above embodiments can be referred to each other, and the content not described in detail in some embodiments can be seen in the same or similar content of other embodiments.

[0035] It should be noted that in the description of the present invention, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In addition, in the description of the present invention, unless otherwise specified, the meaning of "a plurality of" refers to at least two.

[0036] In the description of this specification, the description with reference to terms such as "an embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0037] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as a limitation to the present invention. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present invention.

Claims

1. A communication compatibility circuit for a laser rangefinder, characterized in that, It includes a key module, a control module and a communication circuit module; The key module is electrically connected to the control module, the control module is electrically connected to the communication circuit module, and the communication circuit module is connected to a communication interface; The communication circuit module includes an analog switch; The control module is adapted to control the opening and closing of the analog switch based on the signal generated by the key module, so as to adjust the communication line sequence of TTL communication, 422 communication and 232 communication, thereby achieving communication compatibility.

2. The communication compatibility circuit according to claim 1, wherein The control module is an MCU chip of model STM32F101CBT6.

3. The communication compatibility circuit according to claim 2, wherein The communication circuit module includes: four chips of model SGM3157YC6 / TR, one chip of model KY3232LEEY and one chip of model SIT3490EEUA.

4. The communication compatibility circuit according to claim 3, wherein It also includes: A housing; The control module and the communication circuit module are arranged in the housing, and the key module and the communication interface are inlaid on the surface of the housing.

5. The communication compatible circuit according to claim 4, wherein The key module is a key switch.

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