ARINC429 input and output board card with discrete quantity and analog quantity input

Abstract

The utility model discloses an ARINC 429 input and output board card with discrete quantity and analog quantity input, which adopts a one-master and two-slave MCU (Microprogrammed Control Unit) or one-master and multiple-slave MCU mode, the master MCU and the slave MCUs are communicated through an isolated UART (Universal Asynchronous Receiver / Transmitter) to realize four-path or multi-path ARINC 429 data receiving, sending, analyzing and changing, and the data are displayed through a touch display screen; data of ARINC 429 communication is changed through discrete magnitude input, each bit of discrete magnitude input corresponds to different data bits and functions, and the functions of the corresponding bits are displayed on a display interface; meanwhile, the board card also provides dual-redundancy external eight-channel power supply output control and collects voltage and current analog quantity data of different external power supplies.

Description

Technical Field

[0001] The utility model belongs to the technical field of data transmission, and in particular relates to an ARINC429 input and output board with discrete quantity and analog quantity input. Background Art

[0002] With the increasing application of computer control systems, ARINC 429 input and output boards, one of the main means of connecting peripheral devices to control systems, have also developed rapidly and become stable and mature.

[0003] However, the ARINC 429 input and output boards currently in use are single-function boards that can only receive, transmit, and parse ARINC 429 data, and cannot simultaneously acquire discrete and analog quantities. This requires users to use multiple boards to form a control system to complete tasks, increasing user costs. In addition, the MCU is also used for communicating and modifying multiple channels of ARINC 429 data. However, directly connecting the MCU to multiple channels of ARINC 429 data can easily cause interference between the various channels of ARINC 429 data, resulting in low reliability.

[0004] Therefore, developing a new type of ARINC 429 input and output board has great market prospects. Utility Model Content

[0005] The utility model aims to solve the problems of the prior art and provides an ARINC429 input and output board with discrete and analog inputs.

[0006] In order to solve the technical problem, the technical solution of the utility model is: an ARINC429 input and output board with discrete and analog inputs, including a power supply circuit, a voltage and current acquisition circuit, a discrete input acquisition circuit, a master MCU, a slave MCU, a protocol conversion circuit, a drive circuit and a receiving circuit, wherein there are several slave MCUs;

[0007] The voltage and current acquisition circuit and the discrete input acquisition circuit are respectively connected to the main MCU, the main MCU is used to read the discrete data collected by the discrete input acquisition circuit, and the main MCU is used to read the voltage and current analog data of the external power supply collected by the voltage and current acquisition circuit;

[0008] The master MCU is connected to a plurality of slave MCUs, the number of protocol conversion circuits is twice that of the slave MCUs, the number of driving circuits and receiving circuits is the same as the number of protocol conversion circuits, each slave MCU is connected to two protocol conversion circuits, each protocol conversion circuit is connected to a driving circuit and a receiving circuit, the driving circuit is used to output ARINC 429 data, and the receiving circuit is used to input ARINC 429 data. Each slave MCU is used to receive, send and parse two channels of ARINC 429 data, and the master MCU is used to modify multiple channels of ARINC 429 data.

[0009] The power supply circuit is electrically connected to the master MCU, the slave MCU, the protocol conversion circuit, the driving circuit and the receiving circuit respectively.

[0010] Preferably, the slave MCU includes a first slave MCU and a second slave MCU, the protocol conversion circuit includes a first ARINC 429 protocol conversion circuit, a second ARINC 429 protocol conversion circuit, a third ARINC 429 protocol conversion circuit and a fourth ARINC 429 protocol conversion circuit, the driving circuit is an ARINC 429 driving circuit, the ARINC 429 driving circuit is used to output ARINC 429 data, the receiving circuit is an ARINC 429 receiving circuit, the ARINC 429 receiving circuit is used to input ARINC 429 data, the first slave MCU is bidirectionally electrically connected to the first ARINC 429 protocol conversion circuit and the second ARINC 429 protocol conversion circuit respectively, the second slave MCU is bidirectionally electrically connected to the third ARINC 429 protocol conversion circuit and the fourth ARINC 429 protocol conversion circuit respectively, the first ARINC 429 protocol conversion circuit transmits data to the ARINC 429 driving circuit, and at the same time the ARINC 429 receiving circuit transmits data to the first ARINC 429 protocol conversion circuit, and the second ARINC 429 protocol conversion circuit transmits data to the ARINC 429 driving circuit, and at the same time the ARINC 429 receiving circuit transmits data to the second ARINC 429 protocol conversion circuit, the third ARINC 429 protocol conversion circuit transmits data to the ARINC 429 driving circuit, and at the same time the ARINC 429 receiving circuit transmits data to the third ARINC 429 protocol conversion circuit, the fourth ARINC 429 protocol conversion circuit transmits data to the ARINC 429 driving circuit, and at the same time the ARINC 429 receiving circuit transmits data to the fourth ARINC 429 protocol conversion circuit.

[0011] Preferably, the master MCU communicates with the first slave MCU and the second slave MCU respectively through isolated UART.

[0012] Preferably, the voltage and current acquisition circuit includes an 8-channel voltage acquisition circuit and an 8-channel current acquisition circuit, the 8-channel voltage acquisition circuit is used to acquire external power supply voltage analog data, and the 8-channel current acquisition circuit is used to acquire external power supply current analog data.

[0013] Preferably, it also includes two groups of 8-channel relay circuits, the two groups of 8-channel relay circuits are respectively connected to the main MCU, the main MCU controls the output of the external power supply through the two groups of 8-channel relay circuits, and the 8-channel voltage acquisition circuit is respectively connected to the two groups of 8-channel relay circuits.

[0014] Preferably, it also includes a touch display screen, which communicates with the main MCU via an isolated UART, and the touch display screen is also electrically connected to the power supply circuit.

[0015] Compared with the prior art, the advantages of the present invention are:

[0016] (1) The utility model discloses an ARINC429 input and output board with discrete and analog inputs. The main MCU is connected to a 24-channel discrete input acquisition circuit. The main MCU reads the discrete quantity and realizes discrete quantity input in three modes: power / on, ground / on, and power / ground. The main MCU is connected to an 8-channel voltage acquisition circuit, an 8-channel current acquisition circuit, and two groups of 8-channel relay circuits to collect analog data of voltage and current of an external power supply in real time, and realizes dual redundant control of an 8-channel power supply. The utility model provides data acquisition and control with multiple functions, can collect discrete and analog quantities at the same time, and reduces user costs.

[0017] (2) The utility model adopts a one-master-two-slave MCU or one-master-multiple-slave MCU mode. The master MCU and the slave MCU communicate via isolated UART. Each slave MCU receives, sends and parses two channels of ARINC 429 data. The master MCU communicates and changes four or more channels of ARINC 429 data and displays them on a touch screen. The utility model avoids interference between multiple channels of ARINC 429 data by shunting data from the slave MCU, thereby improving reliability.

[0018] (3) The utility model board has the characteristics of high integration, low power consumption, high reliability and low cost, and is an ideal choice for industrial environments, military ground and aviation and aerospace fields. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 , The utility model is a circuit principle block diagram of an ARINC429 input and output board with discrete and analog inputs.

[0020] Description of reference numerals:

[0021] 1. Power supply circuit, 2. Voltage and current acquisition circuit, 3. Discrete input acquisition circuit, 4. Master MCU, 5. Slave MCU, 6. Protocol conversion circuit, 7. Drive circuit, 8. Receiving circuit, 9. 8-channel relay circuit, 10. Touch screen display;

[0022] 2-1, 8-channel voltage acquisition circuit, 2-2, 8-channel current acquisition circuit;

[0023] 5-1, the first slave MCU, 5-2, the second slave MCU;

[0024] 6-1, a first ARINC 429 protocol conversion circuit, 6-2, a second ARINC 429 protocol conversion circuit, 6-3, a third ARINC 429 protocol conversion circuit, and 6-4, a fourth ARINC 429 protocol conversion circuit. DETAILED DESCRIPTION

[0025] The following describes the specific implementation of the present invention in conjunction with the embodiments:

[0026] It should be noted that the structures, proportions, sizes, etc. shown in this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the conditions for the implementation of the present invention. Any structural modification, change in proportional relationship or adjustment of size should still fall within the scope of the technical content disclosed in this utility model without affecting the efficacy and purpose that can be achieved by the present utility model.

[0027] Example 1

[0028] like Figure 1 As shown, the utility model discloses an ARINC429 input and output board with discrete and analog inputs, comprising a power supply circuit 1, a voltage and current acquisition circuit 2, a discrete input acquisition circuit 3, a master MCU 4, a slave MCU 5, a protocol conversion circuit 6, a drive circuit 7 and a receiving circuit 8, wherein there are several slave MCUs 5;

[0029] The voltage and current acquisition circuit 2 and the discrete input acquisition circuit 3 are respectively connected to the main MCU4, the main MCU4 is used to read the discrete data collected by the discrete input acquisition circuit 3, and the main MCU4 is used to read the voltage and current analog data of the external power supply collected by the voltage and current acquisition circuit 2;

[0030] The master MCU 4 is respectively connected to a plurality of slave MCUs 5, the number of protocol conversion circuits 6 is twice that of the slave MCUs 5, the number of drive circuits 7 and receiving circuits 8 is the same as the number of protocol conversion circuits 6, each slave MCU 5 is respectively connected to two protocol conversion circuits 6, each protocol conversion circuit 6 is respectively connected to a drive circuit 7 and a receiving circuit 8, the drive circuit 7 is used to output ARINC 429 data, and the receiving circuit 8 is used to input ARINC 429 data. Each slave MCU 5 is used to receive, send and parse two channels of ARINC 429 data, and the master MCU 4 is used to change multiple channels of ARINC 429 data;

[0031] The power supply circuit 1 is electrically connected to the master MCU 4 , the slave MCU 5 , the protocol conversion circuit 6 , the driving circuit 7 and the receiving circuit 8 respectively.

[0032] Example 2

[0033] like Figure 1As shown, preferably, the slave MCU5 includes a first slave MCU5-1 and a second slave MCU5-2, the protocol conversion circuit 6 includes a first ARINC 429 protocol conversion circuit 6-1, a second ARINC 429 protocol conversion circuit 6-2, a third ARINC 429 protocol conversion circuit 6-3 and a fourth ARINC 429 protocol conversion circuit 6-4 (ARINC 429 protocol conversion circuit 1, ARINC 429 protocol conversion circuit 2, ARINC 429 protocol conversion circuit 3, ARINC 429 protocol conversion circuit 4), the driving circuit 7 is an ARINC 429 driving circuit, the ARINC 429 driving circuit is used to output ARINC 429 data, the receiving circuit 8 is an ARINC 429 receiving circuit, the ARINC 429 receiving circuit is used to input ARINC 429 data, the first slave MCU5-1 is bidirectionally electrically connected to the first ARINC 429 protocol conversion circuit 6-1 and the second ARINC 429 protocol conversion circuit 6-2, respectively, and the second slave MCU5-2 is bidirectionally electrically connected to the third ARINC The ARINC 429 protocol conversion circuit 6-3 and the fourth ARINC 429 protocol conversion circuit 6-4 are respectively bidirectionally electrically connected. The first ARINC 429 protocol conversion circuit 6-1 transmits data to the ARINC 429 driver circuit (ARINC 429 driver circuit 1), and at the same time, the ARINC 429 receiver circuit (ARINC 429 receiver circuit 1) transmits data to the first ARINC 429 protocol conversion circuit 6-1. The second ARINC 429 protocol conversion circuit 6-2 transmits data to the ARINC 429 driver circuit (ARINC 429 driver circuit 2), and at the same time, the ARINC 429 receiver circuit (ARINC 429 receiver circuit 2) transmits data to the second ARINC 429 protocol conversion circuit 6-2. The third ARINC 429 protocol conversion circuit 6-3 transmits data to the ARINC 429 driver circuit (ARINC 429 driver circuit 3), and at the same time, the ARINC 429 receiver circuit (ARINC 429 receiver circuit 3) transmits data to the third ARINC 429 protocol conversion circuit 6-4. The ARINC 429 protocol conversion circuit 6-3 and the fourth ARINC 429 protocol conversion circuit 6-4 transmit data to the ARINC 429 driver circuit (ARINC 429 driver circuit 4), and at the same time, the ARINC 429 receiver circuit (ARINC 429 receiver circuit 4) transmits data to the fourth ARINC 429 protocol conversion circuit 6-4.

[0034] like Figure 1As shown, the ARINC 429 receiving circuit 1 is externally connected to the ARINC 429 input 1, and the ARINC 429 driving circuit 1 is externally connected to the ARINC 429 output 1; the ARINC 429 receiving circuit 2 is externally connected to the ARINC 429 input 2, and the ARINC 429 driving circuit 2 is externally connected to the ARINC 429 output 2; the ARINC 429 receiving circuit 3 is externally connected to the ARINC 429 input 3, and the ARINC 429 driving circuit 3 is externally connected to the ARINC 429 output 3; the ARINC 429 receiving circuit 4 is externally connected to the ARINC 429 input 4, and the ARINC 429 driving circuit 4 is externally connected to the ARINC 429 output 4.

[0035] like Figure 1 As shown, preferably, the master MCU 4 communicates with the first slave MCU 5 - 1 and the second slave MCU 5 - 2 respectively through isolated UARTs.

[0036] The slave MCU5 communicates with the protocol conversion circuit 6 via D0 to D15. The protocol conversion circuit 6, the driving circuit 7 and the receiving circuit 8 are all existing circuits and will not be described in detail in this application.

[0037] like Figure 1 As shown, preferably, a touch screen display 10 is further included. The touch screen display 10 communicates with the main MCU 4 through an isolated UART, and the touch screen display 10 is also electrically connected to the power supply circuit 1.

[0038] The power supply circuit 1 is externally connected to a 9V~36V power supply, and the power supply circuit 1 converts the 9V~36V power supply into +24V, +5V, +15V, and -15V, respectively supplying power to the touch display screen 10, the main MCU4, the slave MCU5, the protocol conversion circuit 6, the drive circuit 7, and the receiving circuit 8.

[0039] The discrete quantity input acquisition circuit 3 is connected to a 24-channel external discrete input, and the discrete quantity input acquisition circuit 3 inputs the discrete quantity into the main MCU 4 . The discrete quantity input acquisition circuit 3 is an existing conventional circuit.

[0040] The 24 discrete input channels utilize optoelectronic isolation and support three discrete input modes: power / open, ground / open, and power / ground. ARINC 429 communication data is modified through discrete inputs. Each discrete input corresponds to a different data bit and function, and the corresponding bit function is displayed on the display.

[0041] Discrete quantities are physical quantities with fixed, discontinuous values. They are typically represented by integers, such as the on / off state of a switch or the high / low temperature range. Discrete quantities are discrete, meaning they fluctuate within a fixed range without any continuous intermediate values. Discrete quantities require minimal computation and can typically be processed using logical operations. This significantly reduces power consumption and increases data processing speed.

[0042] Example 3

[0043] like Figure 1 As shown, preferably, the voltage and current acquisition circuit 2 includes an 8-channel voltage acquisition circuit 2-1 and an 8-channel current acquisition circuit 2-2, the 8-channel voltage acquisition circuit 2-1 is used to acquire external power supply voltage analog data, and the 8-channel current acquisition circuit 2-2 is used to acquire external power supply current analog data.

[0044] The 8-channel voltage acquisition circuit 2-1 is used to collect the voltages of 8 external power supplies, and the 8-channel current acquisition circuit 2-2 is used to collect the currents of 8 external power supplies. The 8-channel voltage acquisition circuit 2-1 and the 8-channel current acquisition circuit 2-2 communicate with the main MCU4 through ADC. ADC refers to an electronic component that converts analog signals into digital signals.

[0045] like Figure 1 As shown, preferably, two groups of 8-channel relay circuits 9 are further included, and the two groups of 8-channel relay circuits 9 are respectively connected to the main MCU4. The main MCU4 controls the output (Output) of the external power supply through the two groups of 8-channel relay circuits 9, and the 8-channel voltage acquisition circuit 2-1 is respectively connected to the two groups of 8-channel relay circuits 9.

[0046] The main MCU4 is mainly used for reading discrete quantities, changing multi-channel ARINC 429 data, collecting external power supply voltage and current analog quantities, output control of external power supply, and display control.

[0047] The utility model provides dual-redundancy (two sets of 8-channel relay circuits 9) 8-channel 1.8V ~ 30V external power output control, and collects the voltage and current of different power supplies and displays them on the touch screen 10 at the same time.

[0048] The technical indicators of this utility model board are shown in the following table:

[0049]

[0050] The working principle of this utility model is as follows:

[0051] like Figure 1As shown, the utility model discloses an ARINC429 input and output board with discrete and analog inputs. The main MCU is connected to a 24-channel discrete input acquisition circuit. The main MCU reads discrete quantities to realize discrete input in three modes: power / on, ground / on, and power / ground. The main MCU is connected to an 8-channel voltage acquisition circuit, an 8-channel current acquisition circuit, and two groups of 8-channel relay circuits to collect voltage and current analog data of an external power supply in real time, while realizing dual-redundant control of the 8-channel power supply. Each slave MCU5 realizes the reception, transmission, and analysis of two channels of ARINC 429 data. The board adopts a one-master-two-slave MCU or one-master-multiple-slave MCU mode. The master and slave MCUs communicate through isolated UARTs to realize communication, data modification, and display of four or more channels of ARINC429 data. The utility model board provides data acquisition and control with multiple functions, reduces user usage costs, and improves reliability through the one-master-two-slave MCU or one-master-multiple-slave MCU mode.

[0052] The utility model discloses an ARINC429 input and output board with discrete and analog inputs. The main MCU is connected to a 24-channel discrete input acquisition circuit. The main MCU reads discrete quantities to realize discrete quantity input in three modes: power / on, ground / on, and power / ground. The main MCU is connected to an 8-channel voltage acquisition circuit, an 8-channel current acquisition circuit, and two groups of 8-channel relay circuits to collect voltage and current analog data of an external power supply in real time, while realizing dual-redundant control of the 8-channel power supply. The utility model provides data acquisition and control with multiple functions, can collect discrete quantities and analog quantities at the same time, and reduces user usage costs.

[0053] The utility model adopts a one-master-two-slave MCU or one-master-multiple-slave MCU mode. The master MCU and the slave MCUs communicate via isolated UARTs. Each slave MCU receives, sends, and parses two channels of ARINC 429 data. The master MCU communicates and modifies four or more channels of ARINC 429 data, and displays the data on a touch screen. The utility model avoids interference between multiple channels of ARINC 429 data by shunting the data from the slave MCUs, thereby improving reliability.

[0054] The utility model board has the characteristics of high integration, low power consumption, high reliability, low cost, wide operating temperature range, etc. It is an ideal choice for industrial environments, military ground and aviation, and aerospace fields.

[0055] Typical application areas of the present invention include program-controlled systems based on digital signal processing, such as simulators, aviation instruments, radars, and navigation systems.

[0056] The preferred embodiments of the present invention are described in detail above, but the present invention is not limited to the above embodiments. Various changes can be made within the knowledge of ordinary technicians in this field without departing from the purpose of the present invention.

[0057] Many other changes and modifications can be made without departing from the concept and scope of the present invention. It should be understood that the present invention is not limited to specific embodiments, and the scope of the present invention is defined by the appended claims.

Claims

1. An ARINC429 input and output board with discrete and analog inputs, characterized by: It includes a power supply circuit (1), a voltage and current acquisition circuit (2), a discrete input acquisition circuit (3), a master MCU (4), a slave MCU (5), a protocol conversion circuit (6), a drive circuit (7) and a receiving circuit (8), wherein there are several slave MCUs (5); The voltage and current acquisition circuit (2) and the discrete input acquisition circuit (3) are respectively connected to the main MCU (4), the main MCU (4) is used to read the discrete data collected by the discrete input acquisition circuit (3), and the main MCU (4) is used to read the voltage and current analog data of the external power supply collected by the voltage and current acquisition circuit (2); The master MCU (4) is connected to a plurality of slave MCUs (5), the number of the protocol conversion circuits (6) is twice that of the slave MCUs (5), the number of the driving circuits (7) and the number of the receiving circuits (8) are the same as the number of the protocol conversion circuits (6), each slave MCU (5) is connected to two protocol conversion circuits (6), each protocol conversion circuit (6) is connected to a driving circuit (7) and a receiving circuit (8), the driving circuit (7) is used to output ARINC 429 data, the receiving circuit (8) is used to input ARINC 429 data, each slave MCU (5) is used to receive, send and parse two channels of ARINC 429 data, and the master MCU (4) is used to change multiple channels of ARINC 429 data; The power supply circuit (1) is electrically connected to the master MCU (4), the slave MCU (5), the protocol conversion circuit (6), the drive circuit (7) and the receiving circuit (8) respectively.

2. The ARINC429 input / output board with discrete and analog inputs according to claim 1, characterized in that: The slave MCU (5) includes a first slave MCU (5-1) and a second slave MCU (5-2), the protocol conversion circuit (6) includes a first ARINC 429 protocol conversion circuit (6-1), a second ARINC 429 protocol conversion circuit (6-2), a third ARINC 429 protocol conversion circuit (6-3) and a fourth ARINC 429 protocol conversion circuit (6-4), the driving circuit (7) is an ARINC 429 driving circuit, and the ARINC 429 driving circuit is used to output ARINC 429 data, the receiving circuit (8) is an ARINC 429 receiving circuit, and the ARINC 429 receiving circuit is used to input ARINC 429 data, the first slave MCU (5-1) is bidirectionally electrically connected to the first ARINC 429 protocol conversion circuit (6-1) and the second ARINC 429 protocol conversion circuit (6-2), and the second slave MCU (5-2) is bidirectionally electrically connected to the third ARINC 429 protocol conversion circuit (6-3) and the fourth ARINC The ARINC 429 protocol conversion circuits (6-4) are bidirectionally electrically connected, the first ARINC 429 protocol conversion circuit (6-1) transmits data to the ARINC 429 drive circuit, and the ARINC 429 receiving circuit transmits data to the first ARINC 429 protocol conversion circuit (6-1), the second ARINC 429 protocol conversion circuit (6-2) transmits data to the ARINC 429 drive circuit, and the ARINC 429 receiving circuit transmits data to the second ARINC 429 protocol conversion circuit (6-2), the third ARINC 429 protocol conversion circuit (6-3) transmits data to the ARINC 429 drive circuit, and the ARINC 429 receiving circuit transmits data to the third ARINC 429 protocol conversion circuit (6-3), and the fourth ARINC 429 protocol conversion circuit (6-4) transmits data to the ARINC 429 drive circuit, and the ARINC 429 receiving circuit transmits data to the fourth ARINC 429 protocol conversion circuit (6-4).

3. The ARINC429 input / output board with discrete and analog inputs according to claim 2, characterized in that: The master MCU (4) communicates with the first slave MCU (5-1) and the second slave MCU (5-2) respectively through isolated UARTs.

4. The ARINC429 input / output board with discrete and analog inputs according to claim 1, characterized in that: The voltage and current acquisition circuit (2) comprises an 8-channel voltage acquisition circuit (2-1) and an 8-channel current acquisition circuit (2-2). The 8-channel voltage acquisition circuit (2-1) is used to acquire external power supply voltage analog data, and the 8-channel current acquisition circuit (2-2) is used to acquire external power supply current analog data.

5. The ARINC429 input / output board with discrete and analog inputs according to claim 4, characterized in that: The invention also includes two groups of 8-channel relay circuits (9), the two groups of 8-channel relay circuits (9) are respectively connected to the main MCU (4), the main MCU (4) respectively controls the output of the external power supply through the two groups of 8-channel relay circuits (9), and the 8-channel voltage acquisition circuit (2-1) is respectively connected to the two groups of 8-channel relay circuits (9).

6. The ARINC429 input / output board with discrete and analog inputs according to claim 1, characterized in that: It also includes a touch display screen (10), which communicates with the main MCU (4) via an isolated UART. The touch display screen (10) is also electrically connected to the power supply circuit (1).

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