Auxiliary maintenance device based on gamma counting rate digital visualization

Abstract

The utility model discloses an auxiliary maintenance device based on gamma counting rate digital visualization. The auxiliary maintenance device comprises a gamma signal counting unit, a timing unit and a combinational logic gate circuit unit, the gamma signal counting unit comprises a first relay unit, a first counter unit, a first decoder unit and a first nixie tube unit which are connected in sequence; the timing unit comprises a second relay unit, a clock circuit unit, a second counter unit, a second decoder unit and a second nixie tube unit which are connected in sequence, and the signal output end of the second counter unit is connected with the signal input end of the combinational logic gate circuit unit; the signal output end of the combinational logic gate circuit unit is connected with the first relay unit and the second relay unit. The gamma counting rate can be accurately given, so that quantitative analysis is carried out, and instrument repair engineers can quickly and accurately judge faults of instruments.

Description

TECHNICAL FIELD

[0001] The utility model belongs to gamma signal counting technical field, concretely relates to a kind of based on gamma counting rate digital visualization auxiliary maintenance device. BACKGROUND

[0002] The most problem encountered in prior art gamma logging instrument is gamma counting rate anomaly, and the counting rate anomaly includes high gamma counting rate, low gamma counting rate and 0 gamma counting rate. The three phenomena of gamma counting rate can be observed on the logging software operation interface of the ground system of the team. However, when the instrument is disassembled to determine the fault by the instrument maintenance engineer, the number of gamma counting waveforms can be observed only by the oscilloscope in most cases, and the determination is roughly made. This method can only be used for qualitative analysis, but cannot be used for accurate quantitative analysis.

[0003] A gamma counting rate calculation method, device, storage medium and electronic equipment are disclosed in Chinese invention patent (application date 202110700912.X). The method includes: collecting at least two sectors of gamma counting rate to be processed by using a gamma detector; and removing the interference gamma counting rate of the at least two sectors of gamma counting rate to be processed to obtain the target gamma counting rate. The interference gamma counting rate is determined according to the remaining sectors except the current sector in the drilling formation region. The drilling formation region refers to the region used to collect radioactive elements in the well. However, when the instrument fails, the gamma number cannot be accurately quantitatively analyzed. SUMMARY

[0004] The utility model aims at solving the above technical problem, and provides an auxiliary maintenance device based on gamma counting rate digital visualization.

[0005] To achieve the above-mentioned purpose, the utility model provides an auxiliary maintenance device based on gamma counting rate digital visualization, which comprises a gamma signal counting unit, a timing unit and a combination logic gate circuit unit. The gamma signal counting unit comprises a first relay unit, a first counter unit, a first decoder unit and a first nixie tube unit connected in sequence. The timing unit comprises a second relay unit, a clock circuit unit, a second counter unit, a second decoder unit and a second nixie tube unit connected in sequence. The signal output end of the second counter unit is connected to the signal input end of the combination logic gate circuit unit. The signal output end of the combination logic gate circuit unit is connected to the first relay unit and the second relay unit respectively.

[0006] Further, the first relay unit comprises a relay K1 and a transistor Q1. The No. 3 pin of the relay K1 is a gamma signal input end. The emitter of the transistor Q1 is connected to the No. 2 pin of the relay K1.

[0007] Further, the first counter unit comprises a counter U1, a counter U3 and a counter U5, the pin 5 of the counter U1 is connected with the pin 4 of the relay K1, the pin 12 of the counter U1 is connected with the pin 5 of the counter U3, the pin 12 of the counter U3 is connected with the pin 5 of the counter U5.

[0008] Further, the first decoder unit comprises a decoder U2, a decoder U4 and a decoder U6, the pins A, B, C and D of the decoder U2 are connected with the pins 3, 2, 6 and 7 of the counter U1 respectively, the pins A, B, C and D of the decoder U4 are connected with the pins 3, 2, 6 and 7 of the counter U3 respectively, the pins A, B, C and D of the decoder U6 are connected with the pins 3, 2, 6 and 7 of the counter U5 respectively.

[0009] Further, the second relay unit has the same structure as the first relay unit, the clock circuit unit comprises a multi-vibrator, the multi-vibrator is composed of a 555 timer circuit and an RC network; the pin 3 of the clock circuit unit is connected with the pin 3 of the relay K2 of the second relay unit, the frequency 1HZ rectangular wave outputted by the clock circuit unit is transmitted to the pin 4 of the relay K2 of the second relay unit through the pin 3 of the relay K2 for output.

[0010] Further, the second counter unit comprises a counter U7 and a counter U9, the pin 5 of the counter U7 is connected with the pin 4 of the relay K2 of the second relay unit, the pin 12 of the counter U7 is connected with the pin 5 of the counter U9.

[0011] Further, the second decoder unit comprises a decoder U8 and a decoder U10, the pins A, B, C and D of the decoder U8 are connected with the pins 3, 2, 6 and 7 of the counter U7 respectively, the pins A, B, C and D of the decoder U10 are connected with the pins 3, 2, 6 and 7 of the counter U9 respectively.

[0012] Further, the combination logic gate circuit unit comprises a four-input AND gate logic circuit U11A, an OR gate logic circuit U12A and a switch S1, the pin 6 of the four-input AND gate logic circuit U11A is connected with the pin 1 of the OR gate logic circuit U12A, the pin 2 of the switch S1 is connected with the pin 2 of the OR gate logic circuit U12A, the pin 3 of the OR gate logic circuit U12A is connected with the base of the transistor Q1 of the first relay unit and the base of the transistor Q2 of the second relay unit respectively.

[0013] Further, the combined logic gate circuit unit comprises a four-input AND gate logic circuit U11A, an OR gate logic circuit U12A and a switch S1, the 6th pin of the four-input AND gate logic circuit U11A is connected with the 1st pin of the OR gate logic circuit U12A, the 2nd pin of the switch S1 is connected with the 2nd pin of the OR gate logic circuit U12A, the 1st, 2nd, 4th and 5th input pins of the four-input AND gate logic circuit U11A are connected with the 3rd, 2nd, 6th and 7th pins of the counter U7 respectively, and the 1st and 3rd input pins of the switch S1 are connected with the 3rd and 2nd pins of the counter U9 respectively.

[0014] Compared with the prior art, the beneficial effects of the utility model are that: the utility model based on the gamma counting rate digital visualization auxiliary maintenance device can accurately give the gamma counting rate, thereby quantitative analysis is carried out, and this is helpful for instrument maintenance engineers to judge the instrument fault faster and more accurately. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is the structure block diagram of the utility model based on the gamma counting rate digital visualization auxiliary maintenance device;

[0016] Figure 2 It is Figure 1 The first relay unit circuit diagram in the middle;

[0017] Figure 3 It is Figure 1 The first counter unit and the first decoder unit circuit diagram in the middle;

[0018] Figure 4 It is Figure 1 The second relay unit and the clock circuit unit circuit diagram in the middle;

[0019] Figure 5 It is Figure 1 The second counter unit, the second decoder unit and the second nixie tube unit circuit diagram in the middle;

[0020] Figure 6 It is Figure 1 The combined logic gate circuit unit circuit diagram in the middle. DETAILED DESCRIPTION

[0021] The utility model will be further explained in connection with the drawings and specific embodiments.

[0022] As Figure 1The auxiliary maintenance device based on digital visualization of gamma counting rate shown includes a gamma signal counting unit, a timing unit, and a combinational logic gate circuit unit. The gamma signal counting unit includes a first relay unit, a first counter unit, a first decoder unit, and a first digital tube unit connected in sequence. The timing unit includes a second relay unit, a clock circuit unit, a second counter unit, a second decoder unit, and a second digital tube unit connected in sequence. The signal output terminal of the second counter unit is connected to the signal input terminal of the combinational logic gate circuit unit, and the signal output terminal of the combinational logic gate circuit unit is connected to the first relay unit and the second relay unit, respectively.

[0023] like Figure 2 The first relay unit shown includes a relay K1 and a transistor Q1. Pin 3 of relay K1 is the gamma signal input terminal. The emitter of transistor Q1 is connected to pin 2 of relay K1. When there is no high-level input at the base of transistor Q1, the single-pole double-throw switch of relay K1 remains at the default interface pin 4. At this time, relay K1 transmits the gamma signal input sequentially through pins 3 and 4 to the first counter unit. When the base of transistor Q1 receives a high-level control signal, the single-pole double-throw switch of relay K1 switches from pin 4 to the floating pin 5, thus cutting off the gamma signal input. The model of relay K1 is SRD-DC5V, and the model of transistor Q1 is 2N3904.

[0024] like Figure 3 The first counter shown includes counter U1, counter U3, and counter U5, all of which are of model SN74LS192N. Pin 5 of counter U1 is connected to pin 4 of relay K1, pin 12 of counter U1 is connected to pin 5 of counter U3, and pin 12 of counter U3 is connected to pin 5 of counter U5.

[0025] The first decoder unit includes decoders U2, U4, and U6, all of which are model CD4511BCN. Pins A, B, C, and D of decoder U2 are connected to pins 3, 2, 6, and 7 of counter U1, respectively. Similarly, pins A, B, C, and D of decoder U4 are connected to pins 3, 2, 6, and 7 of counter U3, respectively, and pins A, B, C, and D of decoder U6 are connected to pins 3, 2, 6, and 7 of counter U5, respectively.

[0026] When the No. 5 pin (signal input collection end) of the counter U1 inputs a gamma pulse signal, the counter U1 will accumulate the self-incrementing count, and outputs the corresponding 8421 BCD code through the 3, 2, 6, 7 four pins to the decoder U2, the decoder U2 converts the 8421 BCD code collected from the gamma pulse number into the character display pen end level required by the corresponding nixie tube, so as to display the corresponding Arabic numerals of the gamma pulse collection number on the corresponding nixie tube; when the count reaches the upper limit 9, and there is a gamma pulse signal input, the counter U1 overflows, the code of the counter U1 changes from 9 to 0, and the No. 12 pin of the counter U1 outputs a carry pulse to the counter U3, the count, code, overflow and carry of the counter U3 are the same as those of the counter U1, and the working principle of the counter U5 is the same as that of the counter U3, which will not be described here.

[0027] The decoders U2, U4 and U6 of the CD4511BCN type all have a latching function, so after the relay at the input end of the counter U1 is controlled to switch to the suspended pin and there is no gamma pulse input, the decoder obtaining the count code will temporarily store the count rate code switched to the suspended pin at the moment to maintain a certain level state, and continuously output the data level under the condition of uninterrupted power supply for the nixie tube display.

[0028] As shown in Figure 4 The second relay unit has the same structure as the first relay unit. The clock circuit unit includes a multi-vibrator composed of a 555 timer circuit and an RC network. The No. 3 pin (i.e. OUT) of the clock circuit unit is connected to the No. 3 pin of the relay K2 of the second relay unit, and the frequency 1HZ rectangular wave output by the clock circuit unit is transmitted to the No. 4 pin of the relay K2 through the No. 3 pin of the relay K2 for output.

[0029] As shown in Figure 5 The second counting unit includes the counter U7 and the counter U9, and the type of the counter U7 and the counter U9 is the same as that of the counter U1. The No. 5 pin of the counter U7 is connected to the No. 4 pin of the relay K2 of the second relay unit, and the No. 12 pin of the counter U7 is connected to the No. 5 pin of the counter U9.

[0030] The second decoder unit includes the decoder U8 and the decoder U10. The type of the decoder U8 and the decoder U10 is the same as that of the decoder U2. The A, B, C, D four pins of the decoder U8 are connected to the 3, 2, 6, 7 four pins of the counter U7 respectively, and the A, B, C, D four pins of the decoder U10 are connected to the 3, 2, 6, 7 four pins of the counter U9 respectively.

[0031] The 1Hz clock signal output from the multivibrator is sent to pin 5 of counter U7 to complete the counting, encoding, and carry of 0 to 9. Then, the number of output pulses is sent to decoder U9 with latching function in the form of 8421BCD code to complete the decoding, latching, and output of 8421BCD code to the digital tube to display the time.

[0032] like Figure 6 The combinational logic gate unit shown includes a four-input AND gate U11A, an OR gate U12A, and a switch S1. The four-input AND gate U11A is a 74LS21N, and the OR gate U12A is a 74LS32N. Pin 6 of the four-input AND gate U11A is connected to pin 1 of the OR gate U12A, and pin 2 of the switch S1 is connected to pin 2 of the OR gate U12A. Pin 3 of the OR gate U12A is connected to the base of transistor Q1 in the first relay unit and the base of transistor Q2 in the second relay unit.

[0033] The four-input AND gate U11A has its inputs pins 1, 2, 4, and 5 connected to pins 3, 2, 6, and 7 of counter U7, respectively. The switch S1 has its inputs pins 1 and 3 connected to pins 3 and 2 of counter U9, respectively. The required sampling time is switched via switch S1. When the single-pole double-throw switch S1 is switched to pin 3, the timer reaches 10 seconds and outputs a high-level signal through the combinational logic gate unit, controlling the bases of transistors Q1 and Q2 to receive a high-level signal. When the bases of transistors Q1 and Q2 receive a high-level control signal, the single-pole double-throw relays K1 and K2 switch from pin 4 to the floating pin 3. At this point, the inputs of the gamma pulse and the 1Hz clock signal are both cut off, meaning the gamma count stops increasing and the timer stops recording, maintaining the 10-second count. The gamma pulse count; similarly, when the single-pole double-throw switch S1 is switched to pin 1, the timer reaches 10 seconds and outputs a high level through the combinational logic gate circuit to control the bases of transistors Q1 and Q2 to receive a high level. When the bases of transistors Q1 and Q2 receive a high level control signal, the single-pole double-throw blades of relays K1 and K2 switch from pin 4 to the floating pin 3. At this time, the input of gamma pulses and the input of the 1HZ clock signal are cut off, that is, the gamma count no longer increases and the timer no longer records, maintaining the gamma pulse count at 20 seconds.

Claims

1. An auxiliary maintenance device based on digital visualization of gamma count rate, characterized in that: It includes a gamma signal counting unit, a timing unit, and a combinational logic gate circuit unit; the gamma signal counting unit includes a first relay unit, a first counter unit, a first decoder unit, and a first digital tube unit connected in sequence; the timing unit includes a second relay unit, a clock circuit unit, a second counter unit, a second decoder unit, and a second digital tube unit connected in sequence, the signal output terminal of the second counter unit is connected to the signal input terminal of the combinational logic gate circuit unit, and the signal output terminal of the combinational logic gate circuit unit is connected to the first relay unit and the second relay unit respectively.

2. The auxiliary maintenance device based on gamma count rate digital visualization according to claim 1, characterized in that: The first relay unit includes a relay K1 and a transistor Q1. Pin 3 of the relay K1 is the gamma signal input terminal, and the emitter of the transistor Q1 is connected to pin 2 of the relay K1.

3. The auxiliary maintenance device based on gamma count rate digital visualization according to claim 2, characterized in that: The first counter unit includes counter U1, counter U3 and counter U5. Pin 5 of counter U1 is connected to pin 4 of relay K1, pin 12 of counter U1 is connected to pin 5 of counter U3, and pin 12 of counter U3 is connected to pin 5 of counter U5.

4. The auxiliary maintenance device based on gamma count rate digital visualization according to claim 3, characterized in that: The first decoder unit includes decoder U2, decoder U4 and decoder U6. The four pins A, B, C and D of decoder U2 are connected to pins 3, 2, 6 and 7 of counter U1, respectively. The four pins A, B, C and D of decoder U4 are connected to pins 3, 2, 6 and 7 of counter U3, respectively. The four pins A, B, C and D of decoder U6 are connected to pins 3, 2, 6 and 7 of counter U5, respectively.

5. The auxiliary maintenance device based on gamma count rate digital visualization according to claim 1, characterized in that: The second relay unit has the same structure as the first relay unit. The clock circuit unit includes a multivibrator, which consists of a 555 timer circuit and an RC network. Pin 3 of the clock circuit unit is connected to pin 3 of relay K2 of the second relay unit. The 1Hz rectangular wave output by the clock circuit unit is transmitted to pin 4 of relay K2 of the second relay unit through pin 3 of relay K2 for output.

6. The auxiliary maintenance device based on gamma count rate digital visualization according to claim 1, characterized in that: The second counter unit includes counter U7 and counter U9. Pin 5 of counter U7 is connected to pin 4 of relay K2 of the second relay unit, and pin 12 of counter U7 is connected to pin 5 of counter U9.

7. The auxiliary maintenance device based on gamma count rate digital visualization according to claim 6, characterized in that: The second decoder unit includes decoder U8 and decoder U10. The four pins A, B, C, and D of decoder U8 are connected to the four pins 3, 2, 6, and 7 of counter U7, respectively. The four pins A, B, C, and D of decoder U10 are connected to the four pins 3, 2, 6, and 7 of counter U9, respectively.

8. The auxiliary maintenance device based on gamma count rate digital visualization according to claim 1, characterized in that: The combinational logic gate circuit unit includes a four-input AND gate U11A, an OR gate U12A, and a switch S1. Pin 6 of the four-input AND gate U11A is connected to pin 1 of the OR gate U12A, pin 2 of the switch S1 is connected to pin 2 of the gate U12A, and pin 3 of the gate U12A is connected to the base of transistor Q1 of the first relay unit and the base of transistor Q2 of the second relay unit.

9. The auxiliary maintenance device based on gamma count rate digital visualization according to claim 6, characterized in that: The combinational logic gate unit includes a four-input AND gate U11A, an OR gate U12A, and a switch S1. Pin 6 of the four-input AND gate U11A is connected to pin 1 of the OR gate U12A, and pin 2 of the switch S1 is connected to pin 2 of the AND gate U12A. Pins 1, 2, 4, and 5 of the four-input AND gate U11A are connected to pins 3, 2, 6, and 7 of the counter U7, respectively. Pins 1 and 3 of the switch S1 are connected to pins 3 and 2 of the counter U9, respectively.

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