阅读说明：本技术 一种仪表失电后的快速测量装置及方法 (Device and method for quickly measuring power failure of instrument ) 是由 朱高斌 祁勋 浦绍俭 马程耀 袁屹昆 李伟 何理 魏龙彪 何朝均 侯耀 陈镇 于 2020-12-25 设计创作，主要内容包括：本发明属于仪表测量领域,具体涉及一种仪表失电后的快速测量装置及方法,该装置包括蓄电池、显示屏、单片机、报警灯、内置万用表、开关按键、连接件a和连接件b；其中蓄电池两端分别连接开关按键、报警灯,蓄电池又分别和显示屏、单片机、内置万用表、连接件a和连接件b连接,单片机又分别与显示屏和内置万用表连接,内置万用表分别连接件a和连接件b。本发明能够快速、准确的获取工艺系统物理值,以便开展事故的分析及处理。(The invention belongs to the field of instrument measurement, and particularly relates to a device and a method for quickly measuring an instrument after power failure, wherein the device comprises a storage battery, a display screen, a single chip microcomputer, an alarm lamp, a built-in universal meter, a switch key, a connecting piece a and a connecting piece b; the storage battery is connected with the display screen, the single chip microcomputer, the built-in multimeter, the connecting piece a and the connecting piece b respectively, the single chip microcomputer is connected with the display screen and the built-in multimeter respectively, and the built-in multimeter is connected with the connecting piece a and the connecting piece b respectively. The invention can rapidly and accurately acquire the physical value of the process system so as to analyze and process the accident.)

1. The utility model provides a quick measuring device after instrument loses electricity which characterized in that: the device comprises a storage battery (1), a display screen (2), a single chip microcomputer (3), an alarm lamp (4), a built-in universal meter (5), a switch key (6), a connecting piece a (9) and a connecting piece b (10);

the storage battery (1) is connected with the switch key (6) and the alarm lamp (4) at two ends respectively, the storage battery (1) is connected with the display screen (2), the single chip microcomputer (3), the built-in multimeter (5), the connecting piece a (9) and the connecting piece b (10) respectively, the single chip microcomputer (3) is connected with the display screen (2) and the built-in multimeter (5) respectively, and the built-in multimeter (5) is connected with the connecting piece a (9) and the connecting piece b (10) respectively.

2. The device for rapidly measuring after the power failure of the instrument according to claim 1, is characterized in that: the connecting piece a (9) is respectively connected with the storage battery (1) and the built-in multimeter (5) through cables.

3. The device for rapidly measuring after the power failure of the instrument according to claim 2, is characterized in that: and the connecting piece b (10) is respectively connected with the storage battery (1) and the built-in multimeter (5) through cables.

4. The device for rapidly measuring after the power failure of the instrument according to claim 3, is characterized in that: the display screen (2) is respectively connected with a function selection key (7) and an inquiry history key (8), the function selection key (7) selects a physical parameter value measured by the measuring device, and the inquiry history key (8) inquires history records measured by the measuring device in different time periods.

5. The device for rapidly measuring after the power failure of the instrument according to claim 4, is characterized in that: the history inquiry button (8) is set with different time periods according to actual needs.

6. The device for rapidly measuring after the power failure of the instrument according to claim 5, is characterized in that: the alarm lamp (4) monitors the power supply state of the storage battery (1), when the electric quantity of the storage battery (1) is supplied normally, a green lamp is displayed, and when the electric quantity of the storage battery is not supplied normally, a red lamp is displayed.

7. The device of claim 6, wherein the device is configured to measure the voltage of the meter after power loss: the built-in multimeter (5) sends the acquired current value, voltage value and resistance value to the singlechip (3) through a connecting piece a (9) and a connecting piece b (10), and a formula program for calculating the physical parameter value of the process system is downloaded in the singlechip (3).

8. The device for rapidly measuring after the power failure of the instrument according to claim 7, is characterized in that: the connecting piece a (9) and the connecting piece b (10) are determined according to the type of the instrument cabinet terminal.

9. The method for measuring the fast measuring device after the power failure of the instrument according to the claim 8, characterized in that the method comprises the following steps:

step one, a switch key (6) is turned on, the fact that an alarm lamp (4) displays green is confirmed, the fact that a display screen (2), a single chip microcomputer (3) and a built-in universal meter (5) all work normally is confirmed, and physical parameter values to be measured are selected through a function selection key (7);

and step two, connecting the connecting piece a (9) and the connecting piece b (10) with a cabinet terminal where the power-off instrument is located, sending a current value, a voltage value and a resistance value which are collected through the connecting piece a (9) and the connecting piece b (10) to the single chip microcomputer (3) through the built-in universal meter (5), calculating a physical parameter value of the process system through a program in the single chip microcomputer (3), and sending the physical parameter value of the process system to the display screen (2) through the single chip microcomputer (3) for displaying.

Technical Field

The invention belongs to the field of instrument measurement, and particularly relates to a device and a method for quickly measuring an instrument after power failure.

Background

In industrial applications, meters are widely used to measure parameters such as temperature, pressure, liquid level, etc. of process systems or equipment, and a measurement loop generally includes a meter, a power supply unit, a transmission channel, a display device, etc. When one measuring loop loses power supply, the instrument in the measuring loop loses display and loses the measuring function; in extreme cases, such as when the whole plant loses power, the process system of the whole plant loses the monitoring function, and if the measuring function of the instrument cannot be recovered in the shortest time, the physical values of the important process system parameters are obtained, so that the analysis and the processing of accidents are seriously influenced.

Taking a certain nuclear power station as an example, under the power-off working condition of the whole plant, signals such as the pressure of a primary circuit, the liquid level of a voltage stabilizer, the liquid level and the pressure of a steam generator, the liquid level and the temperature of a spent fuel pool, the pressure and the temperature in a containment vessel and the like need to be collected so as to master the state of a unit after an accident in time. The current processing mode of the power station is as follows: the portable pressure calibrator for acquiring pressure and liquid level signals is used, and can provide DC power supply for the transmitter and acquire and display the output current signal of the transmitter. The instrument control personnel access the check gauge to the cabinet terminal where the pressure and liquid level transmitter is located, measure the current of the pressure and liquid level transmitter, and then calculate the physical value of the process parameter according to the measuring range of the pressure and liquid level transmitter. For temperature signals, instrument control personnel use the universal meter to access a cabinet terminal where the thermometer is located, element resistance is measured, and temperature values can be measured according to the resistance score. And finally, the instrument control personnel calculate the process parameter physical value to inform the operator so as to analyze and process the accident. On one hand, however, in the process of acquiring the physical values of the process parameters, the instrument control personnel needs to carry tools to measure the current values or the resistance values first and then obtain the physical values through calculation or table look-up; on the other hand, for some special liquid level measurements, such as the mode of measuring the liquid level by differential pressure, the measured liquid level needs to be corrected according to the system pressure due to different medium densities under different pressures, so as to obtain an accurate physical value. The efficiency is low in the whole working process, the accuracy cannot be guaranteed, and great inconvenience is brought to the work of instrument control personnel. Therefore, it is very important to improve the work efficiency of the instrument control personnel for obtaining the physical values of the process parameters and improve the accuracy of the physical values of the process parameters.

Therefore, it is desirable to provide a device and a method for rapidly measuring a power loss of an instrument, so as to solve the problems in the prior art.

Disclosure of Invention

The invention aims to provide a device and a method for quickly measuring the power failure of an instrument, which can quickly and accurately acquire the physical value of a process system so as to analyze and process accidents.

The technical scheme for realizing the purpose of the invention is as follows:

a rapid measuring device after power failure of an instrument comprises a storage battery, a display screen, a single chip microcomputer, an alarm lamp, a built-in multimeter, a switch key, a connecting piece a and a connecting piece b;

the storage battery is connected with the display screen, the single chip microcomputer, the built-in multimeter, the connecting piece a and the connecting piece b respectively, the single chip microcomputer is connected with the display screen and the built-in multimeter respectively, and the built-in multimeter is connected with the connecting piece a and the connecting piece b respectively.

And the connecting piece a is respectively connected with the storage battery and the built-in multimeter through cables.

And the connecting piece b is respectively connected with the storage battery and the built-in multimeter through cables.

The display screen is respectively connected with a function selection key and a history inquiry key, the function selection key selects a physical parameter value measured by the measuring device, and the history inquiry key inquires the history records measured by the measuring device in different time periods.

The historical inquiry button is set with different time periods according to actual needs.

The alarm lamp monitors the power supply state of the storage battery, and when the electric quantity of the storage battery is supplied normally, the alarm lamp displays a green lamp, and when the electric quantity of the storage battery is not supplied normally, the alarm lamp displays a red lamp.

The built-in multimeter sends the acquired current value, voltage value and resistance value to the singlechip through the connecting piece a and the connecting piece b, and a formula program for calculating the physical parameter value of the process system is downloaded in the singlechip.

The connecting piece a and the connecting piece b are determined according to the type of the instrument cabinet terminal.

The measuring method of the rapid measuring device after the power failure of the instrument comprises the following steps:

turning on a switch key, confirming that an alarm lamp displays green, confirming that a display screen, a single chip microcomputer and a built-in universal meter all work normally, and selecting a physical parameter value to be measured through a function selection key;

and step two, connecting the connecting piece a and the connecting piece b with a cabinet terminal where the power-off instrument is located, sending the current value, the voltage value and the resistance value which are collected through the connecting piece a and the connecting piece b to a single chip microcomputer by a built-in universal meter, calculating the physical parameter value of the process system by a program in the single chip microcomputer, and sending the physical parameter value of the process system to a display screen by the single chip microcomputer for displaying.

The invention has the beneficial technical effects that:

(1) in the rapid measuring device after the power failure of the instrument, the connecting piece can be quickly plugged with a cabinet terminal where the instrument is located, so that the working time is saved;

(2) in the rapid measuring device after the instrument loses power, the storage battery is used as one part of the device to supply power for the device, so that the rapid measuring device is convenient to carry;

(3) in the rapid measuring device after the power failure of the instrument, the program in the singlechip is used for calculating the physical parameter value of the process system, so that manual calculation is omitted, and the working efficiency and the data accuracy are improved;

(4) in the rapid measuring device after the power failure of the instrument, the physical parameter values of the process system at different times are checked by inquiring the historical function, so that the front and back comparison of the physical parameter values of the process system can be realized, and the tracking of the state of the process system by a worker is facilitated;

(5) in the measuring channel analog signal generating device, different physical parameter values can be set and measured according to actual needs, and the practicability is high;

(6) in the rapid measuring device after the instrument loses power, the built-in multimeter can measure signals of different types, and the application is wide.

Drawings

FIG. 1 is a schematic structural diagram of a rapid measurement device after a power failure of an instrument according to the present invention;

in the figure: 1-a storage battery; 2-a display screen; 3, a singlechip; 4-an alarm lamp; 5-a built-in multimeter; 6-switch key; 7-function selection key; 8-query history key; 9-connecting piece a; 10-connecting piece b.

Detailed Description

In order to make those skilled in the art better understand the present invention, the technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention. It should be apparent that the embodiments described below are only some, but not all, of the embodiments of the present invention. All other embodiments that can be derived by a person skilled in the art from the embodiments described herein without inventive step are within the scope of the present invention.

As shown in FIG. 1, the device for rapidly measuring the power failure of the instrument comprises a storage battery 1, a display screen 2, a single chip microcomputer 3, an alarm lamp 4, a built-in multimeter 5, a switch key 6, a function selection key 7, a history inquiry key 8, a connecting piece a9 and a connecting piece b 10.

Two ends of the storage battery 1 are respectively connected with a switch key 6 and an alarm lamp 4;

the switch key 6 is used for controlling the power supply of the whole measuring device;

the alarm lamp 4 is used for monitoring the power supply state of the storage battery 1, when the power supply of the storage battery 1 is normal, a green lamp is displayed, and when the power supply is abnormal, a red lamp is displayed;

the connecting piece a9 is respectively connected with the storage battery 1 and the built-in multimeter 5 through cables;

the connecting piece b10 is respectively connected with the storage battery 1 and the built-in multimeter 5 through cables;

the storage battery 1 supplies power to the power-loss instrument through a connecting piece a9 and a connecting piece b 10;

the built-in multimeter 5 collects the current value, the voltage value and the resistance value of the power-off instrument through a connecting piece a9 and a connecting piece b 10;

the built-in multimeter 5 is connected with the storage battery 1, and the storage battery 1 supplies power to the built-in multimeter 5;

the single chip microcomputer 3 is connected with the storage battery 1, and the storage battery 1 supplies power to the single chip microcomputer 3;

the single chip microcomputer 3 is connected with the built-in multimeter 5, the current value, the voltage value and the resistance value which are acquired by the built-in multimeter 5 through a connecting piece a9 and a connecting piece b10 are transmitted to the single chip microcomputer 3, and a formula program for calculating the physical parameter values of the process system is downloaded in the single chip microcomputer 3;

the display screen 2 is connected with the storage battery 1, and the storage battery 1 supplies power to the display screen 2;

the display screen 2 is respectively connected with a function selection key 7 and an inquiry history key 8, the function selection key 7 is used for selecting physical parameter values measured by the measuring device, and meanwhile, the function is independently set for physical parameters needing to be corrected under the working condition of a special process system, so that the physical parameters of the process system can be quickly obtained; the inquiry history key 8 is used for inquiring the history records measured by the measuring device in different time periods;

the display screen 2 is connected with the singlechip 3, and the singlechip 3 sends the calculated physical parameter values of the process system to the display screen 2 for display.

The type of the connector a9 and the connector b10 is determined according to the type of the meter cabinet terminal.

The alarm lamp 4 is provided with different alarm forms according to the needs of the working occasion or the staff;

the singlechip 3 writes different programs according to calculation formulas of physical parameters of different process systems;

the power supply amount of the storage battery 1 is configured according to actual needs;

the inquiry history key 8 sets different time periods according to actual needs.

The invention also provides a measuring method of the rapid measuring device after the power failure of the instrument, which comprises the following steps:

step one, turning on a switch key 6, confirming that an alarm lamp 4 displays green, confirming that a display screen 2, a single chip microcomputer 3 and a built-in multimeter 5 all work normally, and selecting a physical parameter value to be measured through a function selection key 7;

and step two, connecting the connecting piece a9 and the connecting piece b10 with a cabinet terminal where the power-off instrument is located, sending the current value, the voltage value and the resistance value which are acquired through the connecting piece a9 and the connecting piece b10 to the single chip microcomputer 3 by the built-in multimeter 5, calculating the physical parameter values of the process system by a program in the single chip microcomputer 3, and sending the physical parameter values of the process system to the display screen 2 by the single chip microcomputer 3 for displaying.

The present invention has been described in detail with reference to the drawings and examples, but the present invention is not limited to the examples, and various changes can be made within the knowledge of those skilled in the art without departing from the spirit of the present invention. The prior art can be adopted in the content which is not described in detail in the invention.