JPS60243510A - Measured information processor - Google Patents

Abstract

PURPOSE:To correct the measured data in mechanical correspondence with the characteristic information of a detecting element, which detects the measured information, by providing a characteristic information input means, which indicates the inherent characteristics of a measuring part, at the input part of the measured information. CONSTITUTION:A processor is composed of the following parts; a connector 13, which functions as an input part of measured information from a temperature measuring catheter 2 and the like; a magnetism detecting element 12, which is a characteristic information input means of a measuring part; and a processing means 30, which executes the processing in accordance with the inputted characteristic information. The characteristic values of a temperature detecting element 3, which are detected by the element 12, are imparted to a decoder 36. The decoded output is imparted to a ROM38. Correcting values in correspondence with the kinds, characteristic values and the like of a temperature detecting probe are stored in the ROM38 beforehand. The data in the specified addresses are read and inputted to a microprocessor 40. The microprocessor 40 reads the digitalized temperature information from an A/D converter 34, performs the correcting operation by the correcting data from the ROM38 and outputs the obtained temperature data to a display and recording part 42.

Description

Detailed Description of the Invention ■8 Background of the Invention A, Technical Field The present invention relates to a measurement information processing device that can be used for temperature measurement, etc., and in particular corrects measurement information input from a detection means according to the characteristics of a detection element. The present invention relates to a measurement information processing device for processing.

B. Prior art and its problems A processing device for processing measurement information needs to detect measurement information of a part to be measured. For example, when detecting the temperature of a living body,
A thermistor is often used as a temperature detection element. However, this type of detection element has variations in measured values/output characteristics (for example, temperature resistance characteristics, etc.), and if used as is, measurement errors will occur, making accurate measurement impossible.

If there are variations in the characteristic values of the detection elements, select them based on their characteristic values and use only those whose measurement errors due to variations in characteristic values are within the allowable range, or discard the others.
Temperature measurements are performed by making the output characteristics of the measurement probe uniform and compatible by adding other parts to the detection element and making adjustments for the purpose of correcting variations in characteristic values.

However, in the case of song titles, the yield will be poor and the price of the measurement probe will be high. Furthermore, in the latter case, it is often difficult to add other parts and make adjustments.

(1) Purpose of the Invention The purpose of the present invention is to propose a measurement information processing device that corrects measurement information in mechanical correspondence with characteristic information of a detection element that detects measurement information.

An object of the present invention is to provide a processing device for processing measurement information, which device has an input section having a terminal for inputting measurement information from a detection means, and a characteristic information input means indicating the unique characteristics of the measurement section. This is achieved by a measurement information processing apparatus characterized by comprising a processing means for processing the measurement information according to the characteristic information inputted by the processing means. According to a preferred embodiment, the input section is a connector equipped with characteristic information input means, and the processing means includes decoding means for decoding the characteristic information and correction means for correcting the measurement information according to the decoding result.

■1 Detailed explanation of the invention Hereinafter, the present invention will be described in detail with reference to the drawings.

FIG. 1 is a block diagram showing the overall configuration of an embodiment of the present invention, and FIG. 2 is the same circuit diagram.

As described above, the present invention is a processing device that processes measurement information, and includes a connector 13 that functions as an input section for measurement information from a detection means such as a temperature measurement catheter 2, and a magnetic It consists of a detection element 12 and a processing means 30 that executes processing according to input characteristic information, but for convenience of explanation, the explanation will be given sequentially starting with the detection means.

FIG. 3 is a diagram showing the structure of a temperature measuring catheter and its connecting portion applied to one embodiment of the present invention.

In the figure, reference numeral 1 denotes a catheter connection portion, which is made of a non-magnetized and insulating material, such as plastic. , 2 is a temperature measuring catheter, 3 is a temperature detecting element consisting of a thermistor, 4 is a lead wire connecting the temperature detecting element 3 to the connecting pin 5, 5 is the connecting pin, 6 is a magnet, and 7 is a housing for the magnet 6. There are four parts to do this.

Further, FIG. 4 shows the structure of a connecting portion that is paired with the catheter connecting portion 1 shown in FIG. 3. In the figure, 11 is a connection part that is paired with the catheter connection part 1 in FIG. The socket 14 is a lead wire. Further, 15 is a signal processing device that processes measurement signals.

In use, the connecting part 11 is inserted into the cavity of the connecting part 1, the connecting pin 5 and the socket 13 are connected, and the two are coupled so that the presence or absence of the magnet 6 can be detected by the magnetic detection element 12.

Temperature detection element 3 built into temperature measurement catheter 2 converts temperature information in the living body into an electrical signal, and the electrical signal is transmitted to connection pin 5 via lead wire 4 . However, the value of this electric signal is not the same depending on the type of temperature detection element 3, manufacturing variations, etc.

The connecting part l is provided with four parts 7 so that a magnet 6 can be placed therein.
A type of state will be created. When N recesses 7 are provided, 2N such states are created. Therefore, by weighting the four parts 7, a coded value of 2 is obtained.

If the variation in the temperature detection element 3 described above is already known, it is possible to divide the distribution of the variation based on the measurement tolerance and classify it into several ways. According to the classification, the characteristic value of the detection element 3 can be associated with the state created by the presence or absence of the magnet 6 in the four parts 7 described above.

If the number of classifications is A, then N≧lo
It is sufficient to provide the number of recesses to make g 2 A, and it is sufficient to provide a maximum of N magnets. Then, the state is detected by the magnetic detection elements 12 arranged in the same number of connection parts 11 as the number of recesses, and the temperature detection is transmitted to the signal processing device via the lead wire 14 and at the same time via the connection socket 13. Since the electrical signal of the element 3 is corrected by the signal processing device 15 in an appropriate manner, the temperature measuring catheter is compatible even when the characteristic values of the temperature detecting element 3 vary.

To arrange the magnets in this recess, the magnet 6 is placed from the upper opening of the four parts 7 corresponding to the classification of the temperature detection element 3 described above, and a cover covering the entire surface from the upper surface of the recess 7 is adhered. Alternatively, the magnet 6 may be placed through the lower opening of the four parts 7, and a cover covering the entire lower part may be adhered. FIG. 5 shows an example in which the values obtained by weighting the recesses 7 and symbolizing them according to the presence or absence of the magnet 6 are associated with the above-mentioned variations in the characteristic values of the classified temperature detection elements 3.

In the figure, 20 indicates the characteristic distribution of the temperature detection element, and 21 indicates an example of division based on measurement tolerance.

For example, in the case of a temperature detection element having characteristic values 44 to 46, the magnet 6 is arranged so that the coded value is 7. In the above explanation, we have described an example in which a thermistor used for temperature measurement is used as a detection element, but it is possible to treat detection elements for completely different purposes such as temperature and strain measurement in the same way, and many types can be used. Compatible with all detection elements.

Incidentally, examples of the m% detection element 12 include a Hall element, a reed switch, a magnetoresistive element, etc., and examples of the correction method by the signal processing device 15 include feces processing using four arithmetic operations, tabulated correspondence processing, and the like.

In addition, a magnetic material such as ferrite is arranged in place of the magnet 6,
It is also possible to magnetize the probe after its external appearance is completed, which greatly simplifies the manufacturing process.

Next, the signal processing device 15 that performs temperature measurement using the measurement probe having the above configuration will be explained with reference to FIGS. 5 and 6.

FIG. 5 is a block diagram of the signal processing device, in which the catheter connection part l and the connection part 1'l function as connectors,
Further, the connecting portion 11 is provided so as to face the outside of the housing of the signal processing device 15 . The signal processing device 15 includes an A/D converter 34 that converts the resistance value determined by the resistance measurement circuit 321 circuit 32 into a digital value, which calculates the resistance value of the thermistor depending on a specific temperature.

The characteristic value of the temperature detection element detected by the magnetic detection element 12 is given to the decoder 36. The decoded output of the decoder 36 is given to the ROM 38 as a read address of the ROM 38. Correction data corresponding to the type, characteristic value, etc. of the temperature detection probe is stored in advance in the ROM 38, and data in the ROM at a designated address is read out to the microprocessor. The microprocessor 40 is internally equipped with a ROM for storing processing procedures according to the embodiment and a RAM for storing processing progress results, and reads temperature information digitized from the A/D converter 34 and from the correction ROM 38. Based on the correction data, the microprocessor 40
performs correction calculations and outputs the requested temperature information to the display/recording section 42.

Further, this signal processing device 15 can also be realized by an analog circuit, and a specific example of this is shown in FIG. In FIG. 5, the characteristics of the temperature detection element 3 detected by the magnetic detection element 12 are decoded by the decoder 36, and the linearization adjustment signal 44.
Enter the zero point adjustment value number 46 and the gain adjustment signal 48. The linearize adjustment signal 44 is transmitted to the linearize adjustment switch 44.
HIGH2 of the signal 44 is applied to the (+) inputs and sockets of the non-inverting amplification circuit 52 due to the LOW level.
An adjustment resistor R or R2 is selectively connected to the signal line 50 connecting the temperature measurement catheters 13 to correct variations in linearity of the temperature measurement catheter. The zero point adjustment value number 46 is connected to the zero point adjustment switch 46S, and according to the HIGH or LOW level of the signal 46, the voltage of the reference power source 51 is changed to the resistor R3/R4 or R3/R5.
The zero point adjustment voltage is applied to the non-inverting amplification circuit 54 by dividing the voltage into the voltage. This compensates for variations in the temperature detection element resistance value at the reference temperature. The gain adjustment signal 48 is given to a gain adjustment switch 483, and according to the HIGH or LOW level of the signal 48, either gain adjustment resistor R7 or R8 is connected between both amplifier circuits 52 and 54, and the temperature sensing element of the temperature detection element is connected. Compensate for variations in characteristics. In this way, each output of both amplifying circuits 52, 54 is further applied to a differential amplifier circuit 53, and a normalized output voltage of the temperature measuring catheter is obtained from its output terminal 55.

■1 Effects of the Invention As described above, according to the present invention, since a signal indicating the characteristics of a specific part is given from the measuring part to the processing device, the processing device can perform processing according to the characteristics mechanically, instead of manually. Because there is no intervention, no errors will occur in the process.

Further, since it is possible to use detection elements having various characteristics, the present invention can improve the yield and compatibility of the measuring section.

Furthermore, since the measurement information and the characteristic values of the measurement section are stored together in the processing device, it is possible to freely change and convert the measurement section, and it is also possible to prevent errors from occurring due to changes and conversions.

[Brief explanation of drawings]

Fig. 1 is a block diagram of an embodiment of the present invention, Fig. 2 is a circuit diagram of an embodiment of the present invention, and Fig. 3 is a structure of a temperature measuring section of a temperature measuring catheter used in an embodiment of the present invention. FIG. 4 is a perspective view illustrating the structure of a connection part that connects the temperature measurement catheter shown in FIG. 1 and the signal processing device; FIG. 5 is a temperature detection element FIG. 3 is a graph diagram showing the relationship between the characteristic distribution of and the measurement tolerance. In the figure, l... Catheter connection part, 2... Temperature measurement catheter, 3... Temperature detection element, 4, 14... Lead wire, 5... Connection bottle, 6... Magnet, 7... Concave portion, 11... Connection portion paired with catheter connection portion l,
12... Magnetic detection element, 13... Connection socket, 3
6... Decoder, 44... Linearization adjustment signal,
46...θ point adjustment signal, 48... Gain adjustment signal. Figure 1 Figure 2

Claims (3)

[Claims] (1) A processing device for processing measurement information, the device having an input section having a terminal for inputting measurement information from the detection means, and provided with characteristic information input means indicating the unique characteristics of the measurement section. , a measurement information processing device comprising processing means for processing the measurement information according to characteristic information input by the means. (2) The measurement information processing device according to claim 1, wherein the input section is a connector equipped with characteristic information input means. (3) The measurement information processing apparatus according to claim 1, wherein the processing means includes a decoding means for decoding the characteristic information and a correction means for correcting the measurement information according to the decoding result.