阅读说明：本技术 外场试验用高集成多功能温度测量装置 (High-integration multifunctional temperature measuring device for outfield test ) 是由 刘泽元 朱熙 吴东亮 王晶 苏新明 于 2020-06-19 设计创作，主要内容包括：本发明公开了一种外场试验用高集成多功能温度测量装置,包括上翻式机箱、嵌入式控制器、数据采集模块、适配接口线缆和测温传感器等,其中上翻式机箱集成了显示和输入设备,嵌入式控制器为小体积、高集成无风扇型工控机,数据采集模块可完成最多60通道、3种类型温度传感器测量,接口适配线缆主要实现测温机箱到被测温度传感器的接线适配与信号连接。本发明的装置能够实现外场热电偶、热敏电阻和铂电阻等多种温度传感器不同接线方式条件下的信号测量,体积小巧、携带方便,为军工行业外场试验的温度测量提供有效技术装备。(The invention discloses a high-integration multifunctional temperature measuring device for an outfield test, which comprises an upturning case, an embedded controller, a data acquisition module, an adaptive interface cable, a temperature sensor and the like, wherein the upturning case integrates display and input equipment, the embedded controller is a small-volume high-integration fan-free industrial personal computer, the data acquisition module can complete measurement of at most 60 channels and 3 types of temperature sensors, and the interface adaptive cable mainly realizes wiring adaptation and signal connection from the temperature measuring case to the temperature sensor to be measured. The device can realize signal measurement of a plurality of temperature sensors such as an external field thermocouple, a thermistor, a platinum resistor and the like under different wiring modes, has small volume and convenient carrying, and provides effective technical equipment for temperature measurement of external field tests in the military industry.)

1. The high-integration multifunctional temperature measuring device for the outfield test comprises an upturning case, an embedded controller, a data acquisition module and an interface adaptation cable, wherein the upturning case integrates a display and input equipment, the embedded controller is a high-integration fan-free industrial personal computer, the data acquisition card is designed through interface adaptation, 60 channels are realized at most, the function of single-wire system or double-wire system wiring thermocouple measurement and the function of three-wire system or four-wire system wiring thermal resistance measurement are realized, the interface adaptation cable mainly realizes the interface adaptation and signal connection from the upturning case to a temperature measuring sensor, and the high-integration multifunctional temperature measuring device is characterized in that the signal measurement under the conditions of various wiring modes of various temperature sensors of the thermocouples, the thermistor and the platinum resistor can be realized through the combination of the data acquisition card and the interface adaptation cable.

2. The multifunctional temperature measuring device of claim 1, wherein the flip-up type case is a structural body of the measuring device, and the keyboard and mouse integrated input device and the display device are arranged on the upper part of the case.

3. The multifunctional temperature measuring device of claim 1, wherein the combination of the data acquisition module and the interface adapting cable can separately realize the measurement of the single-wire or double-wire thermocouple temperature sensor with 50 channels at most and separately realize the measurement of the platinum resistor with 30 channels and three wires or four wires.

4. The multifunctional temperature measuring device of claim 3, wherein the cold end compensation of the dual-wire thermocouple temperature sensor has two modes of internal cold end compensation and external cold end compensation, the cold end point of the internal compensation mode is a welding point of a thermocouple wire and an inner needle seat of a cable plug, and the plug temperature is measured through a platinum resistor to be used as the cold end compensation temperature; the cold junction of external compensation mode is thermocouple cold junction welding point to concentrate every thermocouple cold junction welding point and arrange inside heat conduction silicone grease and the measurable small-size container of temperature in.

5. A multifunctional temperature measuring device as recited in claim 1 wherein the interface adapter cables include 3 extension cables, 5 thermocouple measurement cables, 3 platinum resistance measurement cables.

6. The multifunctional temperature measuring device of claim 5, wherein the thermocouple measuring cables comprise 1 adapting cable from a single wire system to a double wire system, and 2 internal and external cold end compensation connecting cables for double wire system temperature measurement.

7. The multifunctional temperature measuring device of claim 6, wherein the internal and external cold junction compensation connecting cables have omega thermocouple plugs, the thermocouple sensors are welded and reversely spun by adopting the omega thermocouple plugs, and the external field is wired without welding, and the temperature measuring loop can be established by directly butting without welding.

8. The multifunctional temperature measuring apparatus as claimed in claim 6, wherein, when measuring a thermocouple for a typical single wire welding process for a spacecraft thermal test, an adaptive cable of a single wire to a double wire is connected to the thermocouple plug, and an extension cable is used if necessary.

9. The multifunctional temperature measuring device of claim 1, wherein the device can be applied to the occasions of various temperature measuring modes of thermocouples, thermistors and platinum resistors for spacecraft system and component-level industrial field temperature measurement and troubleshooting and external field high and low temperature tests.

Technical Field

The invention belongs to the technical field of spacecraft ground test and experiment, and particularly relates to a high-integration multifunctional temperature measuring device for an external field experiment.

Background

Temperature measurement is an important test parameter in spacecraft and other military product testing. The temperature measurement sensor commonly used in the military industry at present comprises a thermocouple, a platinum resistor, a thermistor and the like, measurement equipment is mostly measured by combining a control computer and a standard upper-frame type measurement instrument, the measurement equipment is mostly designed into a cabinet form, the volume scale is relatively large, when the temperature measurement equipment is used in an external field test, the equipment is relatively complex to build, move and carry, the measurement mode of the temperature measurement equipment is relatively simple, and a single piece of equipment can only meet the data acquisition of one type of sensor and one wiring mode.

Along with the improvement of complexity of external field test conditions and test requirements, the requirement of using various temperature measuring sensors in a single test is increasing day by day, and the wiring mode also has the mixed acquisition requirements of a single wire system, a double wire system and the like according to the test field conditions, the traditional temperature measuring equipment is difficult to simultaneously meet the temperature measuring requirements,

in order to solve the temperature measuring requirements of the outfield test, the highly-integrated multifunctional temperature measuring device for the outfield test is designed and invented, the device adopts a portable appearance design, can meet the temperature measuring requirements of various temperature measuring sensors and various measuring lead modes through the diversified design of an acquisition channel and an adaptive interface, is convenient to carry, has rich interfaces, can realize the functions of a plurality of traditional temperature measuring devices, and has important engineering value and positive practical significance.

Disclosure of Invention

The invention aims to provide a high-integration multifunctional temperature measuring device for an outfield test, which can realize signal measurement of various temperature sensors such as an outfield thermocouple, a thermistor, a platinum resistor and the like under various wiring modes, has small volume, is convenient to carry and various in functions, and provides effective technical equipment for the temperature measurement of the outfield test in the military industry.

The invention is realized by the following technical scheme:

the high-integration multifunctional temperature measuring device for the outfield test comprises an upturning case, an embedded controller, a data acquisition module, an adaptive interface cable and a temperature measuring sensor, wherein the upturning case integrates a display and an input device, the embedded controller is a small-size high-integration fan-free industrial personal computer, the data acquisition card can complete 60 channels at most through the interface adaptive design, single-wire system and double-wire system thermocouple measurement and four-wire system platinum resistance measurement functions, and the interface adaptive cable mainly realizes the wiring adaptation and the signal connection from the upturning case to the temperature measuring sensor.

The upturning case is used as a main structure body of the measuring device, a high integration design is adopted, the keyboard and mouse input device and the display device are integrated on the upper portion of the case, the size is small, the weight is light, and the purpose of carrying convenience in an external field is met.

The combination of the data acquisition module and the interface adapting cable can independently realize the measurement of a single-wire system or double-wire system thermocouple temperature sensor with 50 channels at most and can also independently realize the measurement of a 30-channel three-wire system or four-wire system platinum resistor.

Furthermore, a cold end compensation design of the dual-wire thermocouple temperature sensor has two modes of built-in cold end compensation and external cold end compensation, a cold end point of the built-in compensation mode is a welding point of a thermocouple wire and an inner needle seat of a cable plug, the temperature of the plug is measured through a platinum resistor to serve as the cold end compensation temperature, and the method is simple in implementation process and relatively low in measurement accuracy; the cold junction of external compensation mode is thermocouple cold junction welding point to concentrate every thermocouple cold junction welding point and arrange in inside the measurable small-size container of heat conduction silicone grease and temperature, this mode implementation technology is complicated but temperature measurement precision is high.

The interface adapting cable comprises 3 extension cables, 5 thermocouple measuring cables and 3 platinum resistance measuring cables.

Furthermore, the thermocouple measuring cable comprises 1 adapting cable for converting a single wire system into a double wire system, and 2 internal and external cold end compensation connecting cables for measuring temperature of the double wire system.

Further, when the built-in cold end compensation dual-wire thermocouple temperature measurement method is carried out, a built-in cold end compensation connecting cable is adopted to be connected with a temperature measurement sensor, and an extension cable is used when necessary; when the external cold end compensation double-wire thermocouple temperature measurement method is carried out, an external cold end compensation connecting cable is connected with a temperature measurement sensor, and an extension cable is used when necessary.

Furthermore, omega thermocouple plugs are designed on the internal and external cold end compensation connecting cables, the thermocouple sensors are welded and reversely thrown by adopting the omega thermocouple plugs in advance, and a temperature measuring loop can be established by direct butt joint without welding when an external field is wired.

Further, when a typical single-wire welding process thermocouple is used for measuring a spacecraft thermal test, an adaptive cable for converting a single wire system into a double wire system is connected with a thermocouple plug, and an extension cable is used if necessary.

Further, when platinum resistance measurement is performed, platinum resistance measurement cables are connected with three-wire or four-wire platinum resistance leads, each platinum resistance measurement cable can be connected with 10 platinum resistance measurement leads at most, and an extension cable is used if necessary.

The temperature measuring device can be applied to various temperature measuring mode requirements of thermocouples, thermistors, platinum resistors and the like for temperature measurement and troubleshooting of spacecraft systems and component-level industrial fields and high-low temperature tests of external fields.

Drawings

FIG. 1 is a structural design diagram of the multifunctional temperature measuring device of the present invention;

the system comprises a 101 upturning type case, a 102 display, 103 keyboard input equipment, 104 embedded industrial personal computers, 105 data acquisition modules, 106 measurement cable connection ports and 107LAN communication ports.

FIG. 2 is a schematic view of the connection design of the temperature measuring cable in the multifunctional temperature measuring device according to the present invention;

wherein, 202 extension cable, 203 double-wire system to single-wire system adapting cable, 204 built-in cold end compensation connecting cable, 205 external cold end compensation connecting cable, 206 platinum resistance measuring cable, 207 single-wire system measuring cable,

FIG. 3 is a schematic diagram of the design of a cold end compensation connection cable built in the multifunctional temperature measuring device of the present invention;

wherein, 301 is internally provided with a cold end compensation connecting cable electric connector, 302 thermocouple copper wires, 303 thermocouple constantan wires, 304 omega electric connector, 305 thermocouple hot junction, and 306 is internally provided with a cold end compensation point.

FIG. 4 is a schematic diagram of the design of the externally-installed cold end compensation connection cable in the multifunctional temperature measuring device of the present invention;

the thermocouple comprises a 401 electric connector, a 402 thermocouple copper wire, a 403 thermocouple constantan wire, a 404 external cold end compensation point, a 405 electric connector and a 406 thermocouple hot junction.

FIG. 5 is a schematic diagram of measuring platinum resistance in the multifunctional temperature measuring device of the present invention.

Detailed Description

The following is a description of the present invention, which is further illustrated by the following embodiments. The following detailed description, of course, is merely illustrative of various aspects of the invention and is not to be construed as limiting the scope of the invention.

Fig. 1 is a schematic structural diagram of a multifunctional temperature measuring device, and as shown in fig. 1, an upturned case 101 is used as a main body structure of the temperature measuring device, a display 102 and a keyboard input device 103 are integrated on the upper portion of the case, an embedded industrial personal computer 104 and a data acquisition module 105 are installed inside the case, a measurement cable connection port 106 and a LAN communication port 107 are designed on the rear side of the case, and in specific implementation, a measurement cable realizes signal connection between the data acquisition module 105 and a temperature measuring sensor through the measurement cable connection port 106.

Fig. 2 is a schematic connection diagram of temperature measuring cables, and as shown in fig. 2, when a dual-wire thermocouple is used for measurement, the temperature measuring device interface 106 is directly connected to the thermocouple measuring cable, wherein when internal cold end compensation is selected, the thermocouple measuring cable selects the internal cold end compensation connecting cable 204, when external cold end compensation is selected, the thermocouple measuring cable selects the external cold end compensation connecting cable 205, and if necessary, the extension cable 202 is connected between the temperature measuring device interface 106 and the thermocouple for measurement. When the single-wire thermocouple measurement is performed, the adapting cable 203 of the double-wire system to the single-wire system is connected between the temperature measuring device interface 106 and the single-wire system measuring cable 207, and if necessary, the extension cable 202 is connected between the adapting cable 203 and the single-wire system measuring cable 207. When the platinum resistance temperature measurement is performed, the temperature measuring device interface 106 is directly connected with the platinum resistance measuring cable 206, and if necessary, the extension cable 202 is directly connected with the platinum resistance measuring cable 206 at the temperature measuring device interface 106.

Fig. 3 is a schematic design diagram of a built-in cold-end compensation connection cable, and as shown in fig. 3, an electrical connector 301 of the built-in cold-end compensation connection cable adopts Y2-50ZJLM type aerial plugs, each aerial plug has 50 pins, a 2n-1 th pin and a 2n th pin (n is 1, 2, …, 25) are a pair of T-type thermocouple leads, a 2n-1 th pin is welded with a T-type thermocouple copper wire 302, and a 2n th pin is welded with a T-type thermocouple constantan wire 303. The T-shaped omega electrical connector 304 is designed at a position 60cm away from the electrical connector 301, so that the connection after the implementation of the back-throw thermocouple process in the external field test is facilitated. The hot junction of the back-flung thermocouple is 305 and the welding point of thermocouple 303 to the header of electrical connector 301 is the built-in cold junction compensation point 306.

Fig. 4 is a schematic design diagram of an external cold end compensation connection cable, and as shown in fig. 4, an external cold end compensation connection cable electrical connector 401 adopts Y2-50ZJLM type aerial plugs, each aerial plug has 50 pins, a 2n-1 pin and a 2n pin (n is 1, 2, …, 25) are a pair of T-type thermocouple leads, a 2n-1 pin is welded with a T-type thermocouple copper wire 402, a 2n pin is firstly welded with the T-type thermocouple copper wire 402, and is welded with a T-type thermocouple constantan copper wire 403 at a position of 30cm, and then a T-type Ω electrical connector 405 is designed at a position 60cm away from the electrical connector 401, so that connection after an anti-throwing thermocouple process is implemented during an external field test is facilitated. The hot junction of the reversely thrown thermocouple is 406, and the welding point of the T-type thermocouple copper wire 402 led out from the 2 nth pin and the T-type thermocouple constantan wire 403 is an external cold junction compensation point 404.

Fig. 5 is a schematic diagram of a platinum resistance measuring cable, and as shown in fig. 5, the connection cable electrical connector 501 adopts Y2-50ZJLM type aerial plug, and pins 4n, 4n +1, 4n +2, and 4n +3 (n ═ 1, 2, …, 10) are connected to four leads of the nth platinum resistance 502, and each cable can be connected with 10 platinum resistances.

Although particular embodiments of the invention have been described and illustrated in detail, it should be understood that various equivalent changes and modifications could be made to the above-described embodiments in accordance with the spirit of the invention, and the resulting functional effects would still fall within the scope of the invention, without departing from the spirit of the description and the accompanying drawings.