摘要：【中文】本发明公开了一种轮毂压铸防跑铝液装置，属于轮毂制造领域，本发明中，当跑铝未发生时，防跑铝线将模具包围，当跑铝发生时，铝液烫开防跑铝线的绝缘皮接触到内部导线，内部导线接入地面0V电压并传输至溢铝输入触点，溢铝输入触点的0V电压与公共端24V电压构成压降回路，则溢铝输入触点因低电平有效得到触发，在输入信号的作用下，PLC模块的溢铝泄压触点输出信号给炉体排气阀的信号输入端，炉体排气阀打开，炉体迅速泄压。本发明极大的减小了铝水的喷射能量和喷射范围，有效的保证了工作人员安全。同时，本发明也有效避免了跑铝对周边设备造成的损害。因此，本发明具有保障工作人员安全和设备安全的特性。 【EN】The invention discloses a device for preventing aluminum liquid from running out in wheel hub die casting, which belongs to the field of wheel hub manufacturing, wherein when aluminum running does not occur, an aluminum liquid is used for scalding an insulating skin of the aluminum liquid to contact an internal lead, the internal lead is connected with ground 0V voltage and is transmitted to an aluminum overflow input contact, the 0V voltage of the aluminum overflow input contact and the 24V voltage of a common end form a voltage drop loop, the aluminum overflow input contact is effectively triggered due to low level, under the action of an input signal, an aluminum overflow pressure relief contact of a PLC module outputs a signal to a signal input end of an exhaust valve of a furnace body, the exhaust valve of the furnace body is opened, and the furnace body is rapidly decompressed. The invention greatly reduces the spraying energy and the spraying range of the molten aluminum and effectively ensures the safety of workers. Meanwhile, the invention also effectively avoids the damage of the aluminum running to the peripheral equipment. Therefore, the invention has the characteristic of ensuring the safety of workers and equipment.

摘要：【中文】本发明专利公开了一种轮毂压铸机炉体加热装置，属于轮毂制造领域，本发明专利中，将熔断器和开关单元集成为一个结构单元，三个熔断器和一个开关单元的带电触点均隐藏在散热板和护罩构成的密封结构中，当维修人员在对周边元件维修或更换时，不会触碰到炉体加热装置中的任何带电触点，杜绝了人员接触大电流触电的重大安全问题。另外，本发明专利中，控制单元的背部包括散热板和散热片构成的散热结构，使控制单元能够及时散热，延长了控制单元的使用周期，降低了工厂的生产成本。因此，本发明专利具有保障维修人员安全、降低生产成本的特性。 【EN】The invention discloses a heating device for a furnace body of a hub die casting machine, which belongs to the field of hub manufacturing. In addition, in the invention, the back of the control unit comprises a heat dissipation structure consisting of a heat dissipation plate and a heat dissipation fin, so that the control unit can dissipate heat in time, the service cycle of the control unit is prolonged, and the production cost of a factory is reduced. Therefore, the invention has the characteristics of ensuring the safety of maintenance personnel and reducing the production cost.

摘要：【中文】本发明提出一种干涉式光纤布拉格光栅声发射信号传感系统，包括光纤布拉格光栅、1×2光纤耦合器、两根光纤延迟线、3×3光纤耦合器、多通道光电探测电路模块、多通道前置放大器电路模块、多通道数字采集卡和FPGA现场可编程门阵列。该系统利用由1×2光纤耦合器、光纤延迟线和3×3光纤耦合器组成的非平衡马赫曾德干涉仪，将声发射信号作用在光纤布拉格光栅上产生的中心波长变化转换为干涉仪接收端的相位差的变化，进而转换为光强的变化，最终通过光电转换和信号处理实现声发射信号的检测。本发明可以有效的降低温度变化对声发射信号检测的影响，提高系统稳定性和检测精度。 【EN】The invention provides an interference type fiber Bragg grating acoustic emission signal sensing system which comprises a fiber Bragg grating, a 1 x 2 fiber coupler, two fiber delay lines, a 3 x 3 fiber coupler, a multi-channel photoelectric detection circuit module, a multi-channel preamplifier circuit module, a multi-channel digital acquisition card and an FPGA field programmable gate array. The system utilizes an unbalanced Mach-Zehnder interferometer composed of a 1 x 2 optical fiber coupler, an optical fiber delay line and a 3 x 3 optical fiber coupler to convert the central wavelength change generated by the acoustic emission signal acting on the optical fiber Bragg grating into the change of the phase difference of the receiving end of the interferometer, further convert the change into the change of light intensity, and finally realize the detection of the acoustic emission signal through photoelectric conversion and signal processing. The invention can effectively reduce the influence of temperature change on the detection of the acoustic emission signal and improve the stability and the detection precision of the system.