阅读说明：本技术 一种基于固体继电器设计的起动箱系统 (Starting box system based on solid relay design ) 是由 张玲杰 曹杰 于 2019-01-12 设计创作，主要内容包括：本发明公开一种基于固体继电器设计的起动箱系统,包含有,电子定时机构和固体继电器控制部件,电子定时机构具有电源转换模块及信号控制模块；固体继电器控制部件具有固体继电器组模块及固体继电器防护模块；电子定时机构与固体继电器控制部件通过内部连接器进行交联,固体继电器控制部件通过外部连接器与飞机发动机附件进行交联。本发明的优点在于：通过电子方式进行定时,时间精度高,同时采用软件防抖及看门狗电路确保系统可靠运行。固体继电器内部为MOS管作为开关元件,无触点、无拉弧、烧结、粘连等现象,大大提高起动箱的任务可靠性。(The invention discloses a starting box system based on solid relay design, which comprises an electronic timing mechanism and a solid relay control part, wherein the electronic timing mechanism is provided with a power supply conversion module and a signal control module; the solid relay control component is provided with a solid relay group module and a solid relay protection module; the electronic timing mechanism and the solid relay control component are crosslinked through the internal connector, and the solid relay control component is crosslinked with the aircraft engine accessory through the external connector. The invention has the advantages that: timing is carried out in an electronic mode, time precision is high, and meanwhile the system is ensured to run reliably by adopting a software anti-shake and watchdog circuit. The MOS tube is arranged in the solid relay and is used as a switching element, so that the phenomena of no contact, no arc discharge, no sintering, no adhesion and the like are avoided, and the task reliability of the starting box is greatly improved.)

1. A starting box system based on solid relay design is characterized by comprising an electronic timing mechanism and a solid relay control component, wherein the electronic timing mechanism is provided with a power supply conversion module and a signal control module; the solid relay control component is provided with a solid relay group module and a solid relay protection module; the electronic timing mechanism and the solid relay control component are crosslinked through an internal connector, and the solid relay control component is crosslinked with an aircraft engine accessory through an external connector; the electronic timing mechanism outputs a control signal to control the solid relay component to act according to a specified time sequence, so that the time sequence control of the aircraft engine accessories is realized.

2. The starter box system based on the solid state relay design as claimed in claim 1, wherein the power conversion module in the electronic timing mechanism has an EMI filter circuit, a transient spike protection circuit, a DC/DC conversion circuit and an L DO conversion circuit connected in sequence.

3. The solid state relay design-based starter box system as claimed in claim 1, wherein the signal control module in the electronic timing mechanism comprises a microprocessor circuit, a watchdog circuit, a power isolation circuit, a signal isolation circuit and a signal output circuit, wherein the signal output circuit is connected with the solid state relay control component through an internal connector.

4. The solid-state relay design-based starter box system as claimed in claim 1, wherein the solid-state relay control component is provided with a solid-state relay group module and a solid-state relay protection module, and MOS tubes are arranged inside the solid-state relay as switching elements.

Technical Field

The invention relates to the field of solid relays, in particular to a starting box system based on solid relay design.

Background

With the development of the aviation industry, modern advanced airplanes are developing towards the direction of multi-electricity and full-electricity, and higher requirements are also put on the starting system of the airplane. The traditional starting box utilizes a mechanical cam timing mechanism to carry out timing, utilizes an electromagnetic relay to control aircraft accessories, is easy to cause inaccurate timing, is difficult to maintain the cam mechanism, is easy to cause arc discharge, sintering and adhesion of electromagnetic relay contacts, and seriously influences the normal work of an aircraft engine.

Disclosure of Invention

The invention aims to overcome the problems in the prior art and provides a novel starting box system based on a solid relay design.

In order to achieve the purpose, the technical scheme of the invention is as follows: a starting box system based on solid relay design comprises an electronic timing mechanism and a solid relay control component, wherein the electronic timing mechanism is provided with a power supply conversion module and a signal control module; the solid relay control component is provided with a solid relay group module and a solid relay protection module; the electronic timing mechanism and the solid relay control component are crosslinked through an internal connector, and the solid relay control component is crosslinked with an aircraft engine accessory through an external connector; the electronic timing mechanism outputs a control signal to control the solid relay component to act according to a specified time sequence, so that the time sequence control of the aircraft engine accessories is realized.

The power supply conversion module in the electronic timing mechanism is provided with an EMI filter circuit, a transient spike protection circuit, a DC/DC conversion circuit and an L DO conversion circuit which are connected in sequence.

The signal control module in the electronic timing mechanism is provided with a microprocessor circuit, a watchdog circuit, a power isolation circuit, a signal isolation circuit and a signal output circuit, wherein the signal output circuit is connected with the solid relay control component through an internal connector.

Compared with the prior art, the invention has the beneficial effects that: the timing is carried out in a timing mode through the microprocessor, the time precision is high, and meanwhile, the system is ensured to run reliably by adopting a software anti-shake and watchdog circuit. The MOS tube is arranged in the solid relay and is used as a switching element, so that the phenomena of no contact, no arc discharge, no sintering, no adhesion and the like are avoided, and the task reliability of the starting box is greatly improved.

In addition to the technical problems addressed by the present invention, the technical features constituting the technical solutions, and the advantageous effects brought by the technical features of the technical solutions described above, other technical problems solved by the present invention, other technical features included in the technical solutions, and advantageous effects brought by the technical features will be described in further detail with reference to the accompanying drawings.

Drawings

Fig. 1 is a schematic structural diagram according to an embodiment of the present invention.

Detailed Description

The present invention will be described in further detail below with reference to specific embodiments and drawings. Here, the description of the embodiments is provided to help understanding of the present invention, but the present invention is not limited thereto. In addition, the technical features involved in the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

Referring to fig. 1, a starter box based on solid-state relay design is composed of an electronic timing mechanism and a solid-state relay control component. The electronic timing mechanism is provided with a power supply conversion module 3 and a signal control module 4. The solid state relay control component has a solid state relay bank module 5 and a solid state relay protection module 6.

V12 output by an external power supply 1 simultaneously supplies power to an electronic timing mechanism and a solid relay control part, V12 generates 5VD voltage through DC/DC power conversion 33 after passing through an EMI filter circuit 31 and a transient spike suppression circuit 32, and then generates 3.3VD voltage through L DO34 to supply power to a back-end microprocessor circuit 41, a watchdog circuit 42 and a power isolation circuit 43, wherein the EMI filter circuit mainly prevents a power supply of equipment from interfering with a system power supply, and the transient spike suppression circuit mainly can utilize a mature circuit to suppress when abnormal transient limit voltage and voltage spike instantaneously appear in a power supply system, so that the transient spike suppression circuit can normally work under the limit of steady-state characteristics and can also normally work under the limit of transient characteristics.

The power isolation circuit 43 converts 3.3VD into 3.3VA, digital-to-analog electricity is isolated, and interference to the digital circuit when the solid relay acts is effectively prevented. The microprocessor circuit 41 outputs discrete magnitude signals at corresponding IO ports according to a specified time sequence, then outputs control signals through the signal isolation circuit 44 and the signal output circuit 45, the control signals enter the solid relay set module to control the solid relay set module, and then the external power supply 1 outputs the discrete magnitude signals to the aircraft engine accessories through the solid relay set module (the time sequence is consistent with the output time sequence of the microprocessor circuit 41).

The above description is only intended to represent the embodiments of the present invention, and the description is more specific and detailed, but not to be construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.