A 1553B data bus control switch circuit and circuit board

Abstract

The present application provides a 1553B data bus control switch circuit and circuit board, belonging to the field of electronic switch control technology, specifically including a data transmission circuit and a control circuit. The input terminals of the data transmission circuit include BUS1-W and BUS1-B, the output terminals corresponding to BUS1-W include BUS2-W, BUS3-W, and BUS4-W, and the output terminals corresponding to BUS1-B include BUS2-B, BUS3-B, and BUS4-B. The control signal terminals of the control circuit include CTRL+01, CTRL+02, and CTRL-. The control terminal of relay K1 is connected in series between CTRL+01 and CTRL-, and the control terminal of relay K2 is connected in series between CTRL+02 and CTRL-. Different voltages are applied to CTRL+01, CTRL+02, and CTRL- to control the different states of relay K1 and / or relay K2. The processing solution of the present application reduces the weight of the system, which is conducive to the lightweight design of the system.

Description

Technical Field

[0001] The present application relates to the field of electronic switch control technology, and in particular to a 1553B data bus control switch circuit and circuit board. Background Art

[0002] Due to the large number of subsystems controlled by the 1553B data bus, the existing 1553B data bus switches can only control the data on / off of a certain system. This will result in a large number of 1553B data bus switches inside military aviation systems, ground combat vehicle systems, warships and other systems, increasing the weight of the system and adversely affecting the lightweight design of the system. Summary of the Invention

[0003] In view of this, the present application provides a 1553B data bus control switch circuit and circuit board, which solves the problems in the prior art, reduces the weight of the system, and is conducive to the lightweight design of the system.

[0004] The present application provides a 1553B data bus control switch circuit that adopts the following technical solution:

[0005] A 1553B data bus control switch circuit includes a data transmission circuit and a control circuit. The data transmission circuit has input terminals including BUS1-W and BUS1-B, output terminals corresponding to BUS1-W include BUS2-W, BUS3-W, and BUS4-W, and output terminals corresponding to BUS1-B include BUS2-B, BUS3-B, and BUS4-B. The control circuit has control signal terminals including CTRL+01, CTRL+02, and CTRL-. A control terminal of a relay K1 is connected in series between CTRL+01 and CTRL-, and a control terminal of a relay K2 is connected in series between CTRL+02 and CTRL-. Different voltages are applied to CTRL+01, CTRL+02, and CTRL- to control different states of relay K1 and / or relay K2.

[0006] The output ends of relays K1 and K2 are connected in series between BUS1-W and BUS2-W, between BUS1-B and BUS2-B, between BUS1-W and BUS3-W, and between BUS1-B and BUS3-B. The output end of relay K2 is connected in series between BUS1-W and BUS4-W, and between BUS1-B and BUS3-B.

[0007] Optionally, the output ends of the relays K1 and K2 each include two single-pole double-throw switches, and the normally closed contacts of one single-pole double-throw switch of the electromagnetic relay K1 and one single-pole double-throw switch of the electromagnetic relay K2 connect the transmission between BUS1-W and BUS2-W, and the normally closed contacts of another single-pole double-throw switch of the electromagnetic relay K1 and another single-pole double-throw switch of the electromagnetic relay K2 connect the transmission between BUS1-B and BUS2-B.

[0008] Optionally, a diode DF1 is connected in series between the CTRL+01 and the relay K1 , the anode of the diode DF1 is connected to the CTRL+01 , and the cathode of the diode DF1 is connected to the relay K1 .

[0009] Optionally, a diode DF2 is connected in series between the CTRL+02 and the relay K2, the anode of the diode DF2 is connected to the CTRL+02, and the cathode of the diode DF1 is connected to the relay K2.

[0010] Optionally, a diode D1 is further included in parallel with the relay K1 , wherein the anode of the diode D1 is connected to the output side of the control end of the relay K1 , and the cathode of the diode D1 is connected to the input side of the control end of the relay K1 .

[0011] Optionally, a diode D2 is further included in parallel with the relay K2, wherein the anode of the diode D2 is connected to the output side of the control end of the relay K2, and the cathode of the diode D2 is connected to the input side of the control end of the relay K2.

[0012] Optionally, the action time and release time of the relays K1 and K2 are both ≤2ms.

[0013] Optionally, the relays K1 and K2 are A2 class electromagnetic relays.

[0014] Optionally, the diodes DF1 and DF2 are both seven-stage rectifier diodes.

[0015] On the other hand, the present application provides a circuit board that adopts the following technical solution:

[0016] A circuit board, characterized in that the circuit board includes the above-mentioned 1553B data bus switch control circuit, the circuit board is a printed circuit board, and the printed circuit board is made of 2mm thick FR-4 epoxy double-sided glass cloth board.

[0017] In summary, this application has the following beneficial technical effects:

[0018] 1. This application uses control signals to control and interlock internal circuit relays, achieving the function of controlling 1553B data transmission for three systems separately. This reduces the weight of the system and is conducive to lightweight design of the system;

[0019] 2. Add diodes DF1 and DF2 as anti-reverse diodes to prevent adverse effects on the product caused by reverse errors in the control signal;

[0020] 3. Use diodes D1 and D2 as freewheeling diodes to release the electrical energy stored in the relay coil when the electromagnetic relay is disconnected, thereby protecting the product circuit. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0022] Figure 1 This is a circuit diagram of the data bus control switch circuit of the present application 1553B;

[0023] Figure 2 This is a schematic diagram of the structure of the circuit board of this application. DETAILED DESCRIPTION

[0024] The embodiments of the present application are described in detail below with reference to the accompanying drawings.

[0025] The following describes the embodiments of the present application through specific examples, and those skilled in the art can easily understand other advantages and effects of the present application from the contents disclosed in this specification. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. The present application can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present application. It should be noted that, in the absence of conflict, the features in the following embodiments and embodiments can be combined with each other. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without making creative work are within the scope of protection of this application.

[0026] It should be noted that various aspects of the embodiments within the scope of the appended claims are described below. It should be apparent that the aspects described herein can be embodied in a wide variety of forms, and any specific structure and / or function described herein is merely illustrative. Based on this application, it should be understood by those skilled in the art that an aspect described herein can be implemented independently of any other aspect, and two or more of these aspects can be combined in various ways. For example, any number of aspects described herein can be used to implement an apparatus and / or practice a method. In addition, other structures and / or functionalities other than one or more of the aspects described herein can be used to implement this apparatus and / or practice this method.

[0027] It should also be noted that the illustrations provided in the following embodiments are only schematic illustrations of the basic concept of the present application. The illustrations only show components related to the present application and are not drawn according to the number, shape and size of components in actual implementation. In actual implementation, the type, quantity and proportion of each component can be changed at will, and the component layout type may also be more complicated.

[0028] Additionally, in the following description, specific details are provided to provide a thorough understanding of the examples. However, one skilled in the art will appreciate that the aspects described can be practiced without these specific details.

[0029] An embodiment of the present application provides a 1553B data bus control switch circuit.

[0030] like Figure 1 As shown, a 1553B data bus control switch circuit includes a data transmission circuit and a control circuit. The input terminals of the data transmission circuit include BUS1-W and BUS1-B. The output terminals corresponding to BUS1-W include BUS2-W, BUS3-W, and BUS4-W. The output terminals corresponding to BUS1-B include BUS2-B, BUS3-B, and BUS4-B. The control signal terminals of the control circuit include CTRL+01, CTRL+02, and CTRL-. The control terminal of relay K1 is connected in series between CTRL+01 and CTRL-, and the control terminal of relay K2 is connected in series between CTRL+02 and CTRL-. Different voltages are applied to CTRL+01, CTRL+02, and CTRL- to control different states of relay K1 and / or relay K2.

[0031] The output ends of relays K1 and K2 are connected in series between BUS1-W and BUS2-W, between BUS1-B and BUS2-B, between BUS1-W and BUS3-W, and between BUS1-B and BUS3-B. The output end of relay K2 is connected in series between BUS1-W and BUS4-W, and between BUS1-B and BUS3-B.

[0032] The output ends of relays K1 and K2 each include two single-pole double-throw switches. The normally closed contacts of one single-pole double-throw switch of electromagnetic relay K1 and one single-pole double-throw switch of electromagnetic relay K2 connect the transmission between BUS1-W and BUS2-W, and the normally closed contacts of the other single-pole double-throw switch of electromagnetic relay K1 and another single-pole double-throw switch of electromagnetic relay K2 connect the transmission between BUS1-B and BUS2-B.

[0033] When no voltage is applied to CTRL+01, CTRL+02, and CTRL-, the 1553B data (BUS1-W, BUS1-B) is transmitted from the normally closed contact of relay K2 to the normally closed contact of relay K1, and finally output from BUS2-W and BUS2-B.

[0034] When 27VDC voltage is applied between CTRL+01 and CTRL- and CTRL+02 is left floating, the 1553B data (BUS1-W, BUS1-B) is transmitted from the normally closed contact of the K2 relay to the normally open contact of the K1 relay, and finally output from BUS3-W and BUS3-B.

[0035] When 27VDC voltage is applied between CTRL+02 and CTRL- and CTRL+01 is left floating, the 1553B data (BUS1-W, BUS1-B) is transmitted to BUS4-W, BUS4-B outputs via the normally open contact of the K2 relay.

[0036] Relays K1 and K2 are Class A2 electromagnetic relays. Key specifications include: operating temperature: -65 to 125°C; actuation time: ≤2ms; release time: ≤2ms; rated voltage: 27V; operating time: 500Vr.ms; actuation voltage (max): 18V; holding voltage: 9V; and release voltage (min): 1.8V.

[0037] The operating time and release time of relays K1 and K2 are both ≤ 2ms, ensuring that the control circuit can quickly switch and transmit data within 2ms.

[0038] A diode DF1 is connected in series between CTRL+01 and relay K1. The anode of diode DF1 is connected to CTRL+01, and the cathode of diode DF1 is connected to relay K1. A diode DF2 is connected in series between CTRL+02 and relay K2. The anode of diode DF2 is connected to CTRL+02, and the cathode of diode DF1 is connected to relay K2.

[0039] Diodes DF1 and DF2 are both seven-stage rectifier diodes. They use seven-stage rectifier diodes as reverse-current protection diodes, along with seven-stage fast-recovery rectifier diodes. Both diodes are packaged in SMD-0.1 chip form factors. Key performance specifications include: withstand voltage: 700V; average rectified output current: 1A; and an operating temperature range of -55°C to 125°C. In terms of quality, withstand voltage, and operating temperature, they meet the requirements of the 1553B data bus. The diodes are also designed to function reliably, ensuring both reverse-current protection and freewheeling current protection. Prioritize the use of proven materials used in previous products to ensure performance.

[0040] A diode D1 is also connected in parallel with relay K1, with its anode connected to the output side of relay K1's control terminal and its cathode connected to the input side of relay K1's control terminal. A diode D2 is also connected in parallel with relay K2, with its anode connected to the output side of relay K2's control terminal and its cathode connected to the input side of relay K2's control terminal. Diodes D1 and D2 act as freewheeling diodes, releasing stored energy in the relay coil when the electromagnetic relay is disconnected, thus protecting the product's circuitry.

[0041] The control circuit is placed in three different working states through the three different states of the control signal; an anti-reverse diode is used to prevent adverse effects on the product caused by a reverse error in the control signal; a freewheeling diode is used to release the electrical energy stored in the relay coil when the electromagnetic relay is disconnected, thereby protecting the product circuit.

[0042] This patent uses control signals to control and interlock internal circuit relays, achieving the function of controlling 1553B data transmission for three systems separately. This reduces the weight of the system and facilitates lightweight design.

[0043] An embodiment of the present application also discloses a circuit board.

[0044] like Figure 2 As shown, a circuit board includes the above-mentioned 1553B data bus switch control circuit. The circuit board is a printed circuit board, and the printed circuit board is made of 2mm thick FR-4 epoxy double-sided glass cloth board.

[0045] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present application should be included in the scope of protection of the present application. Therefore, the scope of protection of the present application should be based on the scope of protection of the claims.

Claims

1. A 1553B data bus control switch circuit, characterized in that: The device comprises a data transmission circuit and a control circuit, wherein the input terminals of the data transmission circuit include BUS1-W and BUS1-B, the output terminals corresponding to BUS1-W include BUS2-W, BUS3-W, and BUS4-W, and the output terminals corresponding to BUS1-B include BUS2-B, BUS3-B, and BUS4-B. The control signal terminals of the control circuit include CTRL+01, CTRL+02, and CTRL-. The control terminal of the relay K1 is connected in series between CTRL+01 and CTRL-, and the control terminal of the relay K2 is connected in series between CTRL+02 and CTRL-. Different voltages are applied to CTRL+01, CTRL+02, and CTRL- to control different states of the relay K1 and / or relay K2. The output ends of relays K1 and K2 are connected in series between BUS1-W and BUS2-W, between BUS1-B and BUS2-B, between BUS1-W and BUS3-W, and between BUS1-B and BUS3-B. The output end of relay K2 is connected in series between BUS1-W and BUS4-W, and between BUS1-B and BUS3-B. The output ends of the relays K1 and K2 each include two single-pole double-throw switches, one of the single-pole double-throw switches of the relay K1 and one of the single-pole double-throw switches of the relay K2 having normally closed contacts for communication between the BUS1-W and BUS2-W, and another of the single-pole double-throw switches of the relay K1 and another of the single-pole double-throw switches of the relay K2 having normally closed contacts for communication between the BUS1-B and BUS2-B; When no voltage is applied to CTRL+01, CTRL+02 and CTRL-, 1553B data is transmitted from the normally closed contact of relay K2 to the normally closed contact of relay K1, and finally output by BUS2-W and BUS2-B; When 27VDC voltage is applied between CTRL+01 and CTRL- and CTRL+02 is left floating, 1553B data is transmitted from the normally closed contact of K2 relay to the normally open contact of K1 relay, and finally output through BUS3-W and BUS3-B; When 27VDC voltage is applied between CTRL+02 and CTRL- and CTRL+01 is left floating, 1553B data is transmitted to BUS4-W and BUS4-B outputs via the normally open contact of K2 relay.

2. The 1553B data bus control switch circuit according to claim 1, characterized in that: A diode DF1 is connected in series between the CTRL+01 and the relay K1 , wherein the anode of the diode DF1 is connected to the CTRL+01 , and the cathode of the diode DF1 is connected to the relay K1 .

3. The 1553B data bus control switch circuit according to claim 2, characterized in that: A diode DF2 is connected in series between the CTRL+02 and the relay K2. The anode of the diode DF2 is connected to the CTRL+02, and the cathode of the diode DF1 is connected to the relay K2.

4. The 1553B data bus control switch circuit according to claim 1, characterized in that: The device further comprises a diode D1 connected in parallel with the relay K1 , wherein the anode of the diode D1 is connected to the output side of the control terminal of the relay K1 , and the cathode of the diode D1 is connected to the input side of the control terminal of the relay K1 .

5. The 1553B data bus control switch circuit according to claim 4, characterized in that: It also includes a diode D2 connected in parallel with the relay K2, wherein the anode of the diode D2 is connected to the output side of the control end of the relay K2, and the cathode of the diode D2 is connected to the input side of the control end of the relay K2.

6. The 1553B data bus control switch circuit according to any one of claims 1 to 5, characterized in that: The action time and release time of the relays K1 and K2 are both ≤2ms.

7. The 1553B data bus control switch circuit according to claim 6, characterized in that: The relays K1 and K2 are A2 class electromagnetic relays.

8. The 1553B data bus control switch circuit according to claim 3, characterized in that: The diodes DF1 and DF2 are both seven-stage rectifier diodes.

9. A circuit board, characterized in that: The circuit board includes the 1553B data bus control switch circuit according to any one of claims 1 to 7. The circuit board is a printed circuit board made of a 2 mm thick FR-4 epoxy double-sided glass cloth board.

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