Switch array device for analog-to-digital signal transmission and information transmission equipment

Abstract

The embodiment of the utility model discloses a switch array device used for analog-to-digital signal transmission and an information transmission device, the switch array device comprises a plurality of groups of switch arrays, each group of switch arrays comprises a plurality of analog switch units, each analog switch unit comprises a plurality of analog switches, an enabling end for controlling the on-off of the analog switches, and a plurality of address ends; each group of switch array comprises a plurality of signal interfaces and a common signal port, and the switch array device receives control signals through the enabling ends and the address ends so as to control the on-off of the analog switches. And controlling the at least one common signal port to be connected with any one of the signal interfaces or to be in a disconnected state so as to transmit at least one analog signal or digital signal. Through the above mode, the embodiment of the utility model can carry out gating transmission of various types of signals, and is suitable for a wide voltage signal range.

Description

Technical Field

[0001] The embodiments of the utility model relate to the field of information technology, and in particular to a switch array device for analog-to-digital signal transmission and information transmission equipment. Background Art

[0002] In the prior art, the switch array is mainly used for row selection switches and column selection switches in the signal switching array. By controlling the row selection switch and column selection switch of a certain signal unit to be turned on, the corresponding signal unit can be selectively connected. Each switch in the switch array is generally a semiconductor switch, and transmits the same type of signal. In the prior art, the transmission of analog signals or digital signals is transmitted through a single line, and can only transmit one type of signal. Utility Model Content

[0003] In view of the above problems, the embodiments of the present utility model provide a switch array device for analog-to-digital signal transmission and an information transmission device, which overcome the above problems or at least partially solve the above problems.

[0004] According to one aspect of an embodiment of the utility model, a switch array device for analog-to-digital signal transmission is provided, the switch array device comprising: a plurality of switch array groups, each of the switch array groups comprising a plurality of analog switch units, each of the analog switch units comprising a plurality of analog switches, an enable terminal for controlling the on and off of the plurality of analog switches, and a plurality of address terminals; each of the switch array groups comprising a plurality of signal interfaces and a common signal port, the switch array device receiving a control signal through each of the enable terminals and each of the address terminals to control the on and off of each of the analog switches, and controlling at least one of the common signal ports to be connected to any of the signal interfaces, or to be in a disconnected state, so as to transmit at least one analog signal or a digital signal.

[0005] Optionally, each of the analog switch units includes 8 analog switches, 1 enable terminal and 3 address terminals, one end of the 8 analog switches serves as the signal interface of the switch array device, and the other ends are connected together as the common terminal; the enable terminal is used to enable or disable the analog switch unit, and the address terminal is used to connect the common signal port with one of the signal interfaces.

[0006] Optionally, each group of the switch array includes 5 analog switch units, and the common ends of the analog switch units are connected together to serve as the common signal port of the switch array device. The other side of the switch array includes 40 signal interfaces of the 5 analog switch units, and each enable end and each address end controls the common signal port to be connected to one of the 40 signal interfaces or to be disconnected at the same time.

[0007] Optionally, the switch array device includes 5 groups of switch arrays, the connection correspondence of the 40 signal interfaces of each group of switch arrays is the same, and each enable end and each address end controls at least one common signal port to be connected to one of the 40 signal interfaces or to be in a disconnected state at the same time.

[0008] Optionally, the signal type transmitted by the common signal port of each group of the switch array and the 40 signal interfaces includes at least one of an RS232 signal, an RS422 signal, an RS485 signal, and a TTL signal.

[0009] Optionally, the switch array device also includes a processor connected to each of the enable terminals and each of the address terminals, for transmitting a control signal to each of the enable terminals and each of the address terminals to enable or disable the analog switch unit and control the on and off of each of the analog switches.

[0010] Optionally, the switch array device further comprises a management interface connected to the processor, for downloading a preset program from an external computer, wherein the preset program is used to determine a connection relationship between the 40 signal interfaces and an external host device.

[0011] Optionally, the switch array device further includes a display screen and a key input unit connected to the processor, and the key input unit is used to select a preset program according to prompt information on the display screen.

[0012] Optionally, the switch array device also includes a power module for providing power.

[0013] Based on the same inventive concept, an embodiment of the utility model also proposes an information transmission device, including the aforementioned switch array device for analog-to-digital signal transmission, one side of the switch array device is connected to one or more host devices, and the other side is connected to a management device.

[0014] The switch array device for analog-to-digital signal transmission of the embodiment of the utility model includes: multiple groups of switch arrays, each group of the switch arrays includes multiple analog switch units, each of the analog switch units includes multiple analog switches, enable terminals for controlling the on and off of the multiple analog switches, and multiple address terminals; each group of the switch arrays includes multiple signal interfaces and a common signal port, the switch array device receives a control signal through each of the enable terminals and each of the address terminals to control the on and off of each of the analog switches, controls at least one of the common signal ports to be connected to any of the signal interfaces respectively, so as to transmit at least one analog signal or digital signal, is capable of performing strobed transmission of multiple types of signals, and is adaptable to a wide voltage signal range.

[0015] The above description is only an overview of the technical solution of the embodiment of the utility model. In order to more clearly understand the technical means of the embodiment of the utility model, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the embodiment of the utility model more obvious and easy to understand, the specific implementation methods of the utility model are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] By reading the detailed description of the preferred embodiment below, various other advantages and benefits will become clear to those of ordinary skill in the art. The accompanying drawings are only used for the purpose of illustrating the preferred embodiment and are not considered to be limiting of the present invention. Moreover, the same reference symbols are used throughout the accompanying drawings to represent the same components. In the accompanying drawings:

[0017] Figure 1 A schematic diagram of the structure of a switch array device for analog-to-digital signal transmission provided by an embodiment of the utility model is shown;

[0018] Figure 2 A schematic diagram showing the structure of an analog switch unit in an embodiment of the utility model is shown;

[0019] Figure 3 A schematic diagram showing the structure of a single switch array in an embodiment of the utility model is shown;

[0020] Figure 4 A schematic diagram showing the connection of multiple switch arrays according to an embodiment of the present utility model is shown;

[0021] Figure 5 A schematic diagram of a display screen of a switch array device according to an embodiment of the utility model is shown. DETAILED DESCRIPTION

[0022] The exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided to enable a more thorough understanding of the present invention and to fully convey the scope of the present invention to those skilled in the art.

[0023] Figure 1 FIG. 1 shows a schematic diagram of the structure of a switch array device for analog-to-digital signal transmission provided by an embodiment of the utility model. Figure 1As shown, the switch array device for analog-to-digital signal transmission includes: multiple groups of switch arrays, each group of the switch arrays includes multiple analog switch units, each of the analog switch units includes multiple analog switches, enable terminals for controlling the on and off of the multiple analog switches, and multiple address terminals; each group of the switch arrays includes multiple signal interfaces and a common signal port, the switch array device receives a control signal through each of the enable terminals and each of the address terminals to control the on and off of each of the analog switches, and controls at least one of the common signal ports to be connected to any of the signal interfaces respectively, so as to transmit at least one analog signal or digital signal.

[0024] The analog switch is a tri-stable circuit that can determine the state of the input and output terminals according to the level of the strobe terminal. When the strobe terminal is in the strobe state, the state of the output terminal depends on the state of the input terminal; when the strobe terminal is in the cut-off state, the output terminal is in a high-impedance state regardless of the input terminal level. The analog switch mainly plays the role of connecting or disconnecting signals in electronic equipment. Because the analog switch has the characteristics of low power consumption, high speed, no mechanical contacts, small size and long service life.

[0025] In the embodiment of the present utility model, Figure 2 As shown, each analog switch unit includes 8 analog switches, 1 enable terminal EN and 3 address terminals A0-A2. One end of the 8 analog switches serves as the signal interface S1-S8 of the switch array device, and the other end is connected together as the common terminal D; the enable terminal EN is used to enable or disable the analog switch unit, and the address terminals A0-A2 are used to connect the common signal port with one of the signal interfaces. The control signal received by the enable terminal EN and the address terminal A0-A2 is decoded by the decoder in the analog switch unit to enable the analog switch unit and control one of the 8 analog switches to be turned on. The analog signal range of the analog switch of the embodiment of the utility model is VSS to VDD. When dual power supply is used, VSS is the negative power supply of the analog switch, and VDD is the positive power supply of the analog switch. A single power supply of +9V to +40V or a dual power supply of ±9V to ±22V can be used, with a low on-resistance of only 13.5 ohms.

[0026] See also Figure 3 Each group of the switch array includes 5 analog switch units, and the common ends of the analog switch units are connected together as the common signal port of the switch array device. The other side of the switch array includes 40 signal interfaces of the 5 analog switch units, and each enable end and each address end controls the common signal port to be connected to one of the 40 signal interfaces at the same time.

[0027] See also Figure 4, the switch array device includes 5 groups of switch arrays, the connection correspondence of the 40 signal interfaces of each group of switch arrays is the same, and the control interface includes each enable terminal and each address terminal. Each enable terminal and each address terminal controls at least one of the common signal ports Y1-Y5 to be connected to one of the 40 signal interfaces X01-X40 at the same time. Each group of switch arrays is a single group of 1X40 switch arrays, corresponding to one common signal port, such as Figure 4 The five switch arrays correspond to the common signal ports Y1, Y2, Y3, Y4, and Y5 respectively. Each switch array can realize bidirectional transmission, that is, it can transmit the signal from one of the 40 signal interfaces to the corresponding common signal port, or from the common signal port to one of the 40 signal interfaces, or directly realize bidirectional communication between the signal interface and the common signal port.

[0028] The switch array device also includes a processor connected to each of the enable terminals and each of the address terminals, for transmitting a control signal to each of the enable terminals and each of the address terminals to enable or disable the analog switch unit and control the on and off of each of the analog switches. For any single switch array, the MCU processor generates a corresponding control signal according to the instruction received by the control interface, and the on and off and switching of Y to Xm are controlled by 15 address lines A01 to A14 and 5 enable signals EN0 to EN4. The truth table is shown in Table 1 below.

[0029] Table 1 1X40 single switch array truth table

[0030]

[0031]

[0032] Among them, X represents any level. When EN0~EN4 are all "0", Y is not connected to Xm and is in a disconnected state.

[0033] In an embodiment of the utility model, the signal types transmitted by the common signal port of each group of the switch array and the 40 signal interfaces include at least one of RS232 signals, RS422 signals, RS485 signals, and TTL signals. That is, the 40 signal interfaces can be connected to different signals of different host devices, and by controlling the on and off of each analog switch in each single group of switch arrays, one of the digital signals or analog signals in the 40 signal interfaces is transmitted to the corresponding common signal port, or the digital signal or analog signal of the common signal port is transmitted to one of the 40 signal interfaces. Each group of switch arrays can transmit one signal at the same time. Therefore, the switch array device of the embodiment of the utility model can transmit multiple signals at the same time, and the types of the multiple signals can be different, and can belong to one host device or multiple host devices. In other embodiments of the utility model, other types of signals can also be transmitted, and there is no specific limitation here.

[0034] The common descriptions of the above signals are as follows: In RS232 level, logic "1" represents high level, between -3V and -15V. Logic "0" represents low level, between +3V and +15V. Both RS485 level and RS422 level use differential transmission (balanced transmission), and their electrical characteristics are similar. Transmitter: logic "1" differential line voltage difference is +2V to +6V, logic "0" differential line voltage difference is -2V to -6V; Receiver: differential line voltage difference greater than +0.2V represents logic "1", differential line voltage difference less than -0.2V represents logic "0". Input voltage range, RS485 is -7V to +12V, RS422 is -10V to +10V. The difference between RS485 level and RS422 level is that RS485 has one pair of differential lines, which are shared by sending and receiving, so it cannot send and receive at the same time; RS422 has two pairs of differential lines, which are separated from sending and receiving, so it can send and receive at the same time. TTL refers to 3.3V low voltage transistor-transistor logic (Low Voltage Transistor-Transistor Logic, LVTTL). The signal level range is: 0V~3.3V; the output high level VOH needs to be no less than 2.4V, and the output low level is no higher than 0.4V; the input is no less than 2V for high level, and the input is no more than 0.8V for low level.

[0035] The signal electrical characteristics of the four signals are shown in Table 2.

[0036] Table 2 Signal electrical characteristics

[0037]

[0038] In an embodiment of the utility model, the switch array device further comprises a management interface connected to the processor, which is used to download a preset program from an external computer, and the preset program is used to determine the connection relationship between the 40 signal interfaces and the external host device. The management interface can also be used to check the device status and other functions. Figure 1 and Figure 5 The switch array device further comprises a display screen and a key input unit connected to the processor, and the key input unit is used to select a preset program according to the prompt information of the display screen. The switch array device is also provided with an indicator light, and the display screen and the indicator light display the working status. The human-computer interaction adopts the mode of display screen, key and indicator light, and the preset program can be selected through the key input unit and the display screen, and the preset program can also be modified or written through the key input unit and the display screen.

[0039] In an embodiment of the utility model, the switch array device also includes a power module for providing power. The power supply is divided into an external power supply and an internal power supply. Since the switch array device often needs to be touched by operators, for safety reasons, the external power supply of the device adopts an AC220 to DC24V power adapter. The internal power supply includes the following power supplies according to design requirements: +15V, -15V, +5V, +3.3V, etc. +15V and -15V are used to provide working voltage to the analog switch unit, and +5V and +3.3V are used to power other digital circuits.

[0040] The switch array device of the embodiment of the utility model can switch line transmission arbitrarily, has a wide voltage signal range, can adapt to various signal types, can be intelligently controlled, and has good human-computer interaction.

[0041] In summary, the switch array device for analog-to-digital signal transmission of the embodiment of the utility model includes: multiple groups of switch arrays, each group of the switch arrays includes multiple analog switch units, each of the analog switch units includes multiple analog switches, an enable terminal and multiple address terminals for controlling the on and off of the multiple analog switches; each group of the switch arrays includes multiple signal interfaces and a common signal port, the switch array device receives a control signal through each of the enable terminals and each of the address terminals to control the on and off of each of the analog switches, controls at least one of the common signal ports to be connected to any of the signal interfaces respectively, so as to transmit at least one analog signal or digital signal, can perform strobed transmission of multiple types of signals, and adapt to a wide voltage signal range.

[0042] The above describes a specific embodiment of the utility model. In some cases, the actions or steps recorded in the utility model embodiments can be performed in a different order than in the embodiments and still achieve the desired results. In addition, the process depicted in the accompanying drawings does not necessarily require the specific order or continuous order shown to achieve the desired results. In some embodiments, multitasking and parallel processing are also possible or may be advantageous.

[0043] Based on the same concept, the embodiment of the utility model also provides an information transmission device, including the aforementioned switch array device for analog-to-digital signal transmission, one side of the switch array device is connected to one or more host devices, and the other side is connected to a management device. The information transmission device can be a fixed device, or a mobile device or a handheld device.

[0044] Those skilled in the art should understand that the discussion of any of the above embodiments is merely illustrative and is not intended to imply that the scope of the present disclosure is limited to these examples. Under the concept of the present disclosure, the technical features in the above embodiments or different embodiments may be combined, the steps may be implemented in any order, and there are many other variations of the different aspects of the embodiments of the present invention as described above, which are not provided in detail for the sake of simplicity.

[0045] This application is intended to cover all such substitutions, modifications and variations that fall within the broad scope of all embodiments. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the embodiments of the utility model should be included in the scope of protection of this disclosure.

Claims

1. A switch array device for analog-to-digital signal transmission, characterized in that: The switch array device comprises: a plurality of switch array groups, each of the switch array groups comprises a plurality of analog switch units, each of the analog switch units comprises a plurality of analog switches, an enable terminal for controlling the on and off of the plurality of analog switches, and a plurality of address terminals; each of the switch array groups comprises a plurality of signal interfaces and a common signal port, the switch array device receives a control signal through each of the enable terminals and each of the address terminals to control the on and off of each of the analog switches, and controls at least one of the common signal ports to be connected to any of the signal interfaces, or to be in a disconnected state, so as to transmit at least one analog signal or a digital signal.

2. The switch array device according to claim 1, characterized in that: Each of the analog switch units includes 8 analog switches, 1 enable terminal and 3 address terminals. One end of the 8 analog switches serves as a signal interface of the switch array device, and the other ends are connected together as a common terminal. The enable terminal is used to enable or disable the analog switch unit, and the address terminal is used to connect the common signal port with one of the signal interfaces.

3. The switch array device according to claim 2, characterized in that: Each group of the switch array includes 5 analog switch units, and the common ends of the analog switch units are connected together to serve as the common signal port of the switch array device. The other side of the switch array includes 40 signal interfaces of the 5 analog switch units, and each enable end and each address end controls the common signal port to be connected to one of the 40 signal interfaces at the same time.

4. The switch array device according to claim 3, characterized in that: The switch array device includes 5 groups of switch arrays, and the connection correspondence of the 40 signal interfaces of each group of switch arrays is the same. Each enable terminal and each address terminal controls at least one common signal port to be connected to one of the 40 signal interfaces at the same time.

5. The switch array device according to claim 4, characterized in that: The signal type transmitted by the common signal port of each group of the switch array and the 40 signal interfaces includes at least one of RS232 signal, RS422 signal, RS485 signal and TTL signal.

6. The switch array device according to claim 4, characterized in that: The switch array device also includes a processor connected to each of the enable terminals and each of the address terminals, and is used to transmit a control signal to each of the enable terminals and each of the address terminals to enable or disable the analog switch unit and control the on and off of each of the analog switches.

7. The switch array device according to claim 6, characterized in that: The switch array device also includes a management interface connected to the processor, which is used to download a preset program from an external computer, and the preset program is used to determine the connection relationship between the 40 signal interfaces and the external host device.

8. The switch array device according to claim 7, characterized in that: The switch array device also includes a display screen and a key input unit connected to the processor, and the key input unit is used to select a preset program according to the prompt information of the display screen.

9. The switch array device according to claim 1, characterized in that: The switch array device also includes a power module for providing power.

10. An information transmission device, characterized in that: The information transmission device comprises a switch array device for analog-to-digital signal transmission as claimed in any one of claims 1 to 9, wherein one side of the switch array device is connected to one or more host devices, and the other side is connected to a management device.

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