阅读说明：本技术 一种热老化试验箱控制系统 (Thermal aging test box control system ) 是由 周贤 于 2019-10-12 设计创作，主要内容包括：本发明公开了一种热老化试验箱控制系统,包括控制器本体,所述控制器本体包括电路板和显示屏,所述显示屏固定安装在固定架上,所述固定架底部设有安装座,所述安装座一侧设有支撑柱,所述支撑柱底部设有底座,所述支撑柱内开设有凹槽,所述凹槽内底部设有电机,所述电机的输出端与丝杆相连接,所述丝杆外侧套设有滑块,所述滑块与所述丝杆螺纹连接,所述安装座与所述滑块固定连接,所述凹槽内对称固定设有限位杆,所述滑块两端分别贯穿于所述限位杆。有益效果：控制系统具备热老化箱换气次数编辑功能,还具备计算机通信功能,可以通过上位机软件实现试验数据采集和试验过程的全自动化控制。(The invention discloses a thermal aging test box control system which comprises a controller body, wherein the controller body comprises a circuit board and a display screen, the display screen is fixedly arranged on a fixing frame, an installation seat is arranged at the bottom of the fixing frame, a support column is arranged on one side of the installation seat, a base is arranged at the bottom of the support column, a groove is formed in the support column, a motor is arranged at the bottom in the groove, the output end of the motor is connected with a screw rod, a sliding block is sleeved on the outer side of the screw rod and in threaded connection with the screw rod, the installation seat is fixedly connected with the sliding block, limiting rods are symmetrically and fixedly arranged in the groove, and two ends of the sliding block respectively penetrate through the limiting rods. Has the advantages that: the control system has the function of editing the ventilation times of the thermal ageing box and the function of computer communication, and can realize the full-automatic control of test data acquisition and test process through upper computer software.)

1. The thermal aging test box control system is characterized by comprising a controller body (1), wherein the controller body (1) comprises a circuit board (2) and a display screen (3), the display screen (3) is fixedly installed on a fixing frame (4), an installation seat (6) is arranged at the bottom of the fixing frame (4), a support column (5) is arranged on one side of the installation seat (6), a base (9) is arranged at the bottom of the support column (5), a groove (7) is formed in the support column (5), a motor (8) is arranged at the bottom in the groove (7), the output end of the motor (8) is connected with a screw rod (10), a sliding block (11) is sleeved on the outer side of the screw rod (10), the sliding block (11) is in threaded connection with the screw rod (10), the installation seat (6) is fixedly connected with the sliding block (11), and limiting rods (12) are symmetrically and fixedly arranged in the groove (7), the two ends of the sliding block (11) respectively penetrate through the limiting rods (12).

2. The thermal ageing test chamber control system according to claim 1, wherein rollers (13) are movably connected to the bottom of the base (9).

3. The thermal ageing test chamber control system according to claim 2, wherein a bearing is fixedly arranged at the top of the groove (7), and one end of the screw rod (10) far away from the motor (8) penetrates through the bearing and extends into the bearing.

4. The thermal ageing test box control system according to claim 3, wherein the controller body (1) is provided with a power supply interface (14), an SSR interface (15), a thermocouple interface (16), a heater interface (17), a rotating frame interface (18), a circulating fan interface (19), a temperature alarm interface (20), an air valve interface (21), an RS485 interface (22), a door detection interface (23) and a backup interface (24).

5. The thermal ageing test chamber control system according to claim 4, wherein the backup interface (24) is provided with a first temperature alarm output relay interface, a first corresponding temperature alarm interface and a first external audible and visual alarm interface, and the second temperature alarm output relay is provided on the temperature alarm interface and controls the second external audible and visual alarm interface corresponding to the second temperature alarm interface.

6. The thermal ageing test chamber control system according to claim 5, wherein the SSR interface (15) is provided with a heating output interface and a control SSR interface.

7. The thermal ageing test chamber control system according to claim 6, wherein the heater interface (17) is provided with a heating control interface and an external heater control interface.

8. The thermal ageing test box control system according to any one of claims 1 to 7, wherein the control system has a PID control function and can achieve full automatic control; when the temperature in the thermal ageing oven reaches a preset test temperature, the control system automatically judges that the test temperature is reached and starts timing of test time; when the test time reaches a preset time point, the control system automatically closes the heating function; in the test process, the control system monitors the door opening and closing time and the time required for the temperature in the refrigerator to return to the set temperature after the door is closed; the control system also has a function of editing the number of times of air exchange of the thermal ageing oven.

Technical Field

The invention relates to a control system, in particular to a thermal ageing test box control system.

Background

According to the regulations of national and international standards such as GB/T2951, IEC60811, UL1581 and ISO188, the heat aging test has the requirements of heating to different temperature points and heating time and also has the requirements of different ventilation times. At present, a thermal ageing oven control system in the industry mostly adopts a plurality of independent components, such as a temperature controller, a timer, a cumulative timer, a button switch and the like, or some products adopt PLC and touch screen control. The former has low automation degree, and particularly causes unnecessary mistakes for experimenters in test work and data recording when dozens of hundreds of thermal aging test boxes work simultaneously in some large laboratories. The thermal aging test box controlled by the PLC and the touch screen has large control element volume and high cost, and is not suitable for being popularized and used on small and medium-sized test boxes.

An effective solution to the problems in the related art has not been proposed yet.

Disclosure of Invention

The present invention is directed to a thermal aging test chamber control system to solve the problems of the background art.

In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a thermal ageing test case control system, includes the controller body, the controller body includes circuit board and display screen, display screen fixed mounting is on the mount, the mount bottom is equipped with the mount pad, mount pad one side is equipped with the support column, the support column bottom is equipped with the base, set up the recess in the support column, the bottom is equipped with the motor in the recess, the output of motor is connected with the lead screw, lead screw outside cover is equipped with the slider, the slider with lead screw threaded connection, the mount pad with slider fixed connection, the fixed gag lever post that is equipped with of recess internal symmetry, the slider both ends run through respectively in the gag lever post.

Furthermore, the bottom of the base is movably connected with rollers.

Furthermore, a bearing is fixedly arranged at the top in the groove, and one end, far away from the motor, of the screw rod penetrates through the bearing and extends into the bearing.

Furthermore, a power supply interface, an SSR interface, a thermocouple interface, a heater interface, a rotating frame interface, a circulating fan interface, a temperature alarm interface, an air valve interface, an RS485 interface, a door detection interface and a backup interface are arranged on the controller body.

Furthermore, a first temperature alarm output relay interface, a first corresponding temperature alarm interface and a first external audible and visual alarm interface are arranged on the backup interface, and a second temperature alarm output relay is arranged on the temperature alarm interface and controls a second external audible and visual alarm interface corresponding to the second temperature alarm interface.

Furthermore, a heating output interface and a control SSR interface are arranged on the SSR interface.

Furthermore, a heating control interface and an external heater control interface are arranged on the heater interface.

Furthermore, the control system has a PID control function and can realize full automatic control; when the temperature in the thermal ageing oven reaches a preset test temperature, the control system automatically judges that the test temperature is reached and starts timing of test time; when the test time reaches a preset time point, the control system automatically closes the heating function; in the test process, the control system monitors the door opening and closing time and the time required for the temperature in the refrigerator to return to the set temperature after the door is closed; the control system also has a function of editing the number of times of air exchange of the thermal ageing oven.

The invention provides a thermal aging test box control system, which has the following beneficial effects:

(1) the control system adopts the separation of circuit board and display screen, and both are connected with special slow-witted connector of preventing staying. Through being equipped with the support column, be equipped with the motor in the support column, when motor circular telegram during operation, drive the lead screw and rotate, the lead screw drives the slider and slides, and the slider drives the mount pad and removes, and the mount pad drives circuit board and display screen and removes to change the height of controller body, made things convenient for the regulation, it is convenient to bring for control system's operation and use.

(2) The roller wheels are arranged, so that the movement is facilitated. The screw rod is supported and limited by the bearing. The temperature monitoring device is provided with a power supply interface, an SSR interface, a thermocouple interface, a heater interface, a rotating frame interface, a circulating fan interface, a temperature alarm interface, an air valve interface, an RS485 interface, a door detection interface and a backup interface, wherein the power supply interface is a controller power supply, the SSR interface is heating output to control SSR, a control system controls heating power for the SSR by outputting PWM signals, the thermocouple interface is K-type thermocouple input, the heater interface is heating control to control the on-off of an external heater, the rotating frame interface is used for controlling the on-off of a rotating sample frame, the circulating fan interface is used for controlling the on-off of an internal circulating fan, the air valve interface is an electric actuating mechanism for controlling an air door, the RS485 interface is used for host computer communication to transmit temperature measurement values and remotely modify parameter settings, and the door detection interface is used for indicating the on.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

FIG. 1 is a schematic structural diagram of a thermal ageing test chamber control system according to an embodiment of the invention;

FIG. 2 is a schematic structural diagram of a circuit board in a thermal ageing test chamber control system according to an embodiment of the invention;

FIG. 3 is a schematic diagram of an internal structure of a controller body in a thermal aging test chamber control system according to an embodiment of the invention;

fig. 4 is a schematic diagram of an internal structure of a support column in a thermal ageing test chamber control system according to an embodiment of the invention.

Reference numerals:

1. a controller body; 2. a circuit board; 3. a display screen; 4. a fixed mount; 5. a support pillar; 6. a mounting seat; 7. a groove; 8. a motor; 9. a base; 10. a screw rod; 11. a slider; 12. a limiting rod; 13. a roller; 14. a power interface; 15. an SSR interface; 16. a thermocouple interface; 17. a heater interface; 18. a rotating frame interface; 19. a circulating fan interface; 20. a temperature alarm interface; 21. an air valve interface; 22. an RS485 interface; 23. a door detection interface; 24. and backing up the interface.

Detailed Description

The invention is further described with reference to the following drawings and detailed description: