JPH09116978A - Data collection helmet - Google Patents

Abstract

PROBLEM TO BE SOLVED: To automatize the collection work of data at a job site, to speedily judge the quality of equipment and measurement data from the data and to easily accumulate equipment diagnostic data which is indispensable for prevention/maintenance by permitting a radio transmission/reception part transmitting a signal including transmission destination unit identification information to store a received reception signal. SOLUTION: A data collection helmet 1 loads the radio transmission/reception part 2 transmitting the signal including transmission destination unit identification information and a storage means 5 storing the reception signal which the radio transmission/reception part 2 receives. When a maintenance personal arrives at a job site terminal board 9, an antenna 3 attached to the wearing helmet 1 is caused to face the antenna 11 of the job site terminal board 9 and a collection start switch in an operation switch 4 is operated. Thus, necessary data selected by the job site terminal board 9 reaches the helmet 1, is reproduced and is automatically stored in the storage means 5 only by executing a starting operation toward the job site terminal board 9.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a data collection helmet for rationalizing the work when a maintenance person goes around a process and collects measurement data.

[0002]

2. Description of the Related Art Conventionally, a large number of various measuring sensors and operating ends, such as temperature, pressure and flow rate required for operation, are attached to various devices that constitute a large process such as a petrochemical factory and a steel mill. Remote control is performed by connecting to a control device installed in an instrument room that is separated by 10 to several hundred meters. However, maintenance personnel constantly make patrols to check whether the above-described process is operating normally or whether the attached measurement sensor is operating normally. This work is continued day and night in spring, summer, autumn, winter, and even in the wind and rain. Maintenance personnel read the data from the indicator at the patrol destination, and in some cases perform calculation processing, record these together with the judgment, take necessary measures, return to the instrument room, report, and refer to various data It includes a series of work such as performing the next treatment. An object of the present invention is to automate the work of collecting data on the site, and at the same time, quickly judge the quality of equipment and measurement data from that data, and accumulate equipment diagnostic data that is indispensable for preventive maintenance. Provide a data collection helmet for ease.

[0003]

The data collection helmet of the present invention comprises the following means. A helmet is equipped with a wireless transmission / reception unit that transmits a signal including destination device identification information and a storage unit that stores a reception signal received by the wireless transmission / reception unit.

[0004]

BEST MODE FOR CARRYING OUT THE INVENTION

 (1) Use of this data collection helmet using the drawings below
The form will be briefly described. Figure 1 shows the use of this helmet
It is a conceptual diagram explaining a form. 1 is the outer shell of the helmet
Department. 2 has no helmet mounted on helmet 1
It is a line transmission / reception device. 3 is an antenna. use
Since radio waves normally use high frequencies above the VHF band,
The antenna can be miniaturized. Have directivity. 4 is the operation
It is a switch. Input operation command to helmet transmitter / receiver
Power. 5 is the description of the received signal using an LSI card, etc.
Means of storage. Take out the LSI card and
The memory contents can be read out by the reader. 6 is
It is a peaker. Inform the maintenance personnel about the operation of this wireless transceiver 2.
Report the condition. Reference numeral 7 is an output terminal. LSI card
Output the stored contents. RC242C Other interface
Data is exchanged with other computers etc.
U. Reference numeral 8 is a storage battery for an internal power supply. 9 is the site tar
It is a minar board. Set up to operate the process
Installed due to branch signal from sensor or maintenance requirement
Signal S from all sensors ₁, S_Two..S_nIs drawn
It is rare.

Reference numeral 10 is a field wireless transmitter / receiver. 11
Is an antenna connected to the on-site wireless transceiver 10. Directivity is provided to increase the reach of radio waves and reduce radiation in unnecessary directions. S ₁ , S ₂ and S _n represent sensors installed in the device or the like. (2) FIG. 2 is a circuit block diagram showing an example of implementation of the present invention. This corresponds to the code described in FIG. Helmet 1
The wireless transmission / reception device 2 including the following units is mounted on. 21
Is an identification number generating means. A detailed designation number such as a device number such as the number of the destination field panel and a sensor number is generated. 22 is a wireless transmitter. First, the activation signal of the transmission destination, the number of the transmission site panel generated by the identification number generation means 21 and the sensor number or its group number as necessary are transmitted. 23 is a circulator.
Switch between the transmission output and the received signal from the antenna.
24 is a demodulation circuit. The received wave of FM or the like input through the circulator is detected and the signal of the transmission source is reproduced.
25 is a control circuit. When a maintenance person operates the operation switch 4, a predetermined operation such as transmission, reception signal instruction, storage, generation of a judgment sound, reading of stored contents, and operation of inserting / removing an LSI card is performed.

Reference numeral 26 is a display. It is used to display received signals and adjust the equipment. Reference numeral 27 is a demodulation unit of the field wireless transmission / reception device 10. The radio wave arriving at the antenna 11 is detected, and the activation signal and the device identification number (21) included in the radio wave are demodulated and output. 28 is a signal detector. When the output signal of the demodulation unit 27 is decoded and it is detected that its own number is designated, the field wireless transceiver 10 starts the subsequent operation. Reference numeral 29 is an input conversion unit. The signals input from the sensors S ₁ , S _2, ... S _n are converted into signals suitable for transmission and output. 30 is a control unit. Sensor numbers S ₁ , S ₂ , S _n included in the output signal of the signal detection unit 28
The output signal from the input conversion unit 29 is controlled and transmitted in order according to the designation signal such as. Reference numeral 31 is a modulator. The output signal from the input converter 29 is used as a signal wave to modulate a carrier wave and output to the antenna 11. Normally, a carrier wave having the same frequency as the received wave frequency is internally oscillated. However, if the radio wave can reach an extremely short distance of several meters, the output wave power may be small. 29
The output signal from the antenna 11 can be modulated as a signal wave and transmitted from the antenna 11. The figure shows such an example.

(3) Next, the operation and operation when the helmet 1 and the field wireless transceiver 10 are combined will be described. FIG. 1 will be described. When the maintenance staff arrives at the site terminal 9 of a predetermined process during the patrol, the antenna 3 attached to the helmet 1 worn by the maintenance worker is turned to the antenna 11 of the site terminal 9. Then, the collection start switch in the operation switch 4 is operated. In response to this, the helmet wireless transmission / reception device 2 transmits the number of the predetermined field terminal board (9) and the number of the sensor to be collected or the group number thereof from the device identification number generation means 21, following the activation signal. The on-site terminal board 9 receives this radio wave WL with the antenna 11 and sends it to the wireless transmission / reception device 10. Next, FIG.
Will be described. The demodulation unit 27 of the on-site wireless transmitter / receiver 10 detects the received electric wave and reproduces the source signal. When the signal detection unit 28 detects that the device identification number received from this signal is its own number, it starts the following operation via the control unit 30. Assuming that the sensor numbers sent after the device identification number are, for example, S ₁ , S ₂ · S _n , the input converter 29 outputs signals from the connected sensors S ₁ , S ₂ · S _n , The signal is converted into a signal suitable for transmission and output to the successive modulation unit 31. The modulator 31 modulates the carrier wave by this signal and sends it out from the antenna 11.
Usually, the carrier wave internally oscillates a carrier wave having the same frequency as the received wave. However, if the radio wave can reach an extremely short distance of several meters, the output wave power may be small, and the received wave can be used as a carrier wave. It is modulated and transmitted from the antenna 11. The radio wave transmitted from the antenna 11 is captured by the antenna 3, switched by the circulator, and then demodulated by the demodulation circuit 24.
Then, the data is detected and the data such as the sensor number of the transmission source and the measured value is reproduced. These data can be viewed on the display 26. Further, this data is stored in the storage means 5 using an LSI memory or the like. The stored data can be separately read by an external card reader and subjected to computer processing. This data can also be read from the output terminal 7. The process of transmitting and receiving these signals is notified from the speaker 6 including an alarm. These operations are started by operating the operation switch 4, and are executed according to a program registered in the control circuit 25 in advance. The DC power supply for the helmet 1 charges and supplies the storage battery 8. It should be noted that, of the circuit blocks constituting the helmet transmitting / receiving device, the battery or the like can be freely arranged in a place other than the helmet according to its function.

[0008]

According to the present invention, the following effects can be obtained. (1) The maintenance staff simply activates the terminal board on site and the necessary data selected on the terminal board arrives at the data collection helmet 1 by radio waves and is reproduced and automatically stored in the storage means 5. Stored in. Data even in high places where people cannot enter or in bad environments can be easily collected from distant places. (2) The data collected as described above is read out by the host computer via the card reader to seek the judgment of other maintenance personnel, or the accumulated data is referred to in the instrument room to promptly take measures. Can be decided and instructed to the maintenance staff. (3) The method of attaching a radio transmitter / receiver to a helmet to make it freehand greatly improves the workability of a maintenance worker because it enables various work at the same time. (4) By streamlining the work that has traditionally been carried out in the wind and rain regardless of whether it is spring, summer, autumn, winter, or day or night, the data stored in the LSI memory is connected to the host computer via an interface such as RS232C. ,
In addition to the quality of the data, it became easier to collect and store the data essential for process operation and facility diagnosis. As described above, the present invention has a great effect of overcoming the great difficulty involved in the data collection work and improving the utilization of the data by improving the existing principle and equipment and systematizing them.

[Brief description of the drawings]

FIG. 1 is a conceptual diagram illustrating a mode of use of a helmet of the present invention.

FIG. 2 is a circuit block diagram showing an example of implementation of the present invention.

[Explanation of symbols]

 1 Helmet 2 Helmet Radio Transmitter / Receiver 3 Antenna 4 Operation Switch 5 LSI Memory 6 Speaker 7 Output Terminal 8 Storage Battery and Drawout Terminal 9 Field Terminal Board 10 Field Radio Transmitter / Receiver 11 Antenna 21 Identification Number Generation Means 22 Radio Transmitter 23 Circulator 24 Demodulation Circuit 25 control circuit 26 indicator 27 demodulator 28 signal detector 29 input converter 30 controller 31 modulator

Front Page Continuation (72) Inventor Yasunori Kobayashi 2-39 Nakamachi, Musashino City, Tokyo Yokogawa Electric Co., Ltd.

Claims (1)

[Claims] 1. A data collection helmet equipped with a wireless transmission / reception unit for transmitting a signal including destination device identification information and a storage unit for storing a reception signal received by the wireless transmission / reception unit.