WO2021253365A1

WO2021253365A1 - High-frequency radar detection circuit for three-dimensional geological exploration and detection method therefor

Info

Publication number: WO2021253365A1
Application number: PCT/CN2020/096936
Authority: WO
Inventors: 赵辉
Original assignee: 江苏中勘地质勘查有限公司
Priority date: 2020-06-17
Filing date: 2020-06-19
Publication date: 2021-12-23
Also published as: CN111709206A

Abstract

A high-frequency radar detection circuit for three-dimensional geological exploration and a detection method therefor. The high-frequency radar detection circuit comprises: an adjustable voltage stabilization module, a power source storage control module, a signal source module, a high-frequency ultrasonic transmitting module, an ultrasonic receiving module, a radar receiving control module and a signal processing module, wherein the adjustable voltage stabilization module changes an output voltage value by using a resistance value of a variable resistor, so as to achieve the storage of a required voltage; the power source storage control module stores an acquired power source; the signal source module generates a signal instruction by means of acquiring a switching-on voltage; the high-frequency ultrasonic transmitting module generates a high-frequency ultrasonic wave by means of the signal instruction; the radar receiving control module performs adjustment control on a received wave band signal; and the signal processing module repairs an acquired detection wave band, and inhibits interference of an electromagnetic wave by means of an inductor. The accurate detection of complex geology and the processing of an interference frequency band are realized.

Description

A high-frequency radar detection circuit for three-dimensional geological survey and its detection method

Technical field

The invention relates to the technical field of radar detection, in particular to a high-frequency radar detection circuit used for three-dimensional geological surveys and a detection method thereof.

Background technique

With the continuous deepening of the development and construction of underground space in my country, geological radar detection as a non-destructive testing technology has developed rapidly; geological radar has high resolution, fast and economical, flexible and convenient, accurate positioning, intuitive profile and real-time image display. And other advantages, it has been widely used in various engineering fields and has good application prospects.

According to engineering practice experience, it is relatively easy to use geological radar to obtain the records reflecting underground cavities and pipeline cavities. However, if you want to obtain the volume information of the detection target, there are still no small difficulties; it is precisely because of the current problems. The detection of these defects is only limited to qualitative explanations, and the specific severity of the disease cannot be estimated quantitatively. Therefore, it is difficult to accurately and deeply assess and monitor the quality of the ground under the ground, and it is difficult to determine the reinforcement range and amount of the defect. Effective evaluation means that some targeted measures cannot be taken in advance to remedy it. Therefore, it is of great significance for the establishment of a mathematical structure calculation model for obtaining the equivalent volume of the measured target based on the detection of the ground penetrating radar.

The traditional radar detection circuit has a narrow detection range and restricts the survey of complex terrain. It cannot survey geological data on a large scale and accurately obtain geological information. Because geological surveys transmit and receive ultrasonic waves, the generation, conversion, and reception of ultrasonic waves are proposed. Higher requirements, the stability of the output voltage cannot be guaranteed when the power module is provided with continuous power, which will cause the output voltage to fluctuate, which will affect the emission of the radar band; when the complex geology is surveyed, it will be interfered by the electromagnetic field, which makes the radar When the detection circuit receives the echo, it is interfered, and the survey information cannot be accurately obtained.

technical problem

A high-frequency radar detection circuit for three-dimensional geological survey is provided to solve the above-mentioned problems.

Technical solutions

Adjustable voltage stabilizing module used to optimize the obtained input power and adjust the regulated output voltage;

The power storage control module used to store the regulated and stabilized power supply, and then control the operation of the next-level module when it is started;

A signal source module used to obtain the start-up power of the power storage control module to generate signal instructions;

A high-frequency ultrasonic transmitter module used to receive signal instructions fed back by the signal source module to generate high-frequency ultrasonic transmission waves;

The ultrasonic receiver module used to receive the wave band that the high-frequency ultrasonic transmitter module bounces when it encounters an object;

Radar receiving control module for adjusting and controlling the received ultrasonic waves;

It is used to repair the damaged detection signal in the transmission of the radar receiving control module and isolate the signal processing module to prevent the interference band from entering.

According to one aspect of the present invention, the adjustable voltage stabilizing module uses the resistance value of the variable resistor RV1 to change the output voltage value, thereby satisfying the voltage required for storage;

The power storage control module stores the acquired power, and realizes the control of the storage power by the transistor Q3 by starting the switch SB1;

The signal source module generates a signal command by obtaining the conduction voltage, and the resistance R7 grounding is a protective measure taken to prevent electrical or electronic equipment from being struck by lightning;

The high-frequency ultrasonic transmitter module generates high-frequency ultrasonic waves through signal instructions, and the transistor Q7 obtains the conduction voltage through the base terminal to realize the conduction instruction;

The radar receiving control module adjusts and controls the received band signal, and the resistor R21 consumes the over-discharge current appearing in the capacitor C11;

The signal processing module repairs the acquired detection band, and suppresses the interference of electromagnetic waves through the inductor L1.

According to one aspect of the present invention, the adjustable voltage stabilizing module includes a resistor R1, a transistor Q1, a transistor Q2, a resistor R2, a resistor R3, a diode D1, a diode D2, a voltage regulator U1, a resistor R4, a capacitor C1, and a variable resistor. RV1, resistor R5, wherein one end of the resistor R1 is respectively connected to the positive terminal of the power supply DC, the collector terminal of the transistor Q1, and the collector terminal of the transistor Q2; the other end of the resistor R1 is connected to the base terminal of the transistor Q1 and the negative terminal of the diode D1 respectively; The emitter terminal of the transistor Q1 is respectively connected to the base terminal of the transistor Q2 and one end of the resistor R2; the positive terminal of the diode D1 is connected to the negative terminal of the diode D2; the positive terminal of the diode D2 is respectively connected to one end of the resistor R4, one end of the capacitor C1, and one end of the resistor R5 The other end of the capacitor C1, the negative terminal of the power supply DC, and the ground line GND are connected; the other end of the resistor R2 is connected to the emitter terminal of the transistor Q2 and one end of the resistor R3; the other end of the resistor R3 is connected to pin 1 of the voltage regulator U1; Pin 2 of the voltage regulator U1 is connected to the other end of the resistor R4; Pin 3 of the voltage regulator U1 is connected to the pin 2 of the variable resistor RV1; Pins 1 and 3 of the variable resistor RV1 are both connected to The other end of the resistor R5 is connected.

According to one aspect of the present invention, the power storage control module includes a lithium battery B1, a resistor R6, a switch SB1, a capacitor C2, a resistor R9, a capacitor C3, a resistor R10, a lamp LED1, a transistor Q3, a transistor Q4, and a resistor R11. The positive terminal of the lithium battery B1 is connected to one end of the resistor R6, one end of the resistor R10, the emitter terminal of the transistor Q3, the pin 3 of the voltage regulator U1, and the pin 2 of the variable resistor RV1; the negative terminal of the lithium battery B1 is connected to the resistor R6. One end, one end of the switch SB1, two ends of the capacitor C2, one end of the resistor R9, one end of the capacitor C3, the emitter terminal of the transistor Q4, and the ground line GND; the other end of the switch SB1 is connected to the other end of the resistor R9, the other end of the capacitor C3, and the base of the transistor Q4 The other end of the resistor R11 is connected to one end; the other end of the resistor R10 is respectively connected to the base terminal of the transistor Q3 and the collector end of the transistor Q4; the collector end of the transistor Q3 is respectively connected to the other end of the resistor R11 and the positive terminal of the lamp LED1; the lamp The negative terminal of LED1 is connected to the ground wire GND.

According to one aspect of the present invention, the signal source module includes a capacitor C4, a resistor R8, a resistor R7, a capacitor C5, an operational amplifier U2, and a variable resistor RV2, wherein the positive terminal of the capacitor C4 is connected to one end of the resistor R8 and the operational amplifier U2. Pin 7, the collector terminal of the transistor Q3, the other end of the resistor R11, and the positive terminal of the lamp LED1 are connected; the negative terminal of the capacitor C4 is connected to the negative terminal of the capacitor C5, the operational amplifier U2 pin 4, and the ground wire GND; the capacitor C5 The positive terminal is connected to the other end of the resistor R8 and the pin 2 of the operational amplifier U2; the pin 3 of the operational amplifier U2 is connected to one end of the resistor R7, the pin 2 and pin 1 of the variable resistor RV2; the operational amplifier U2 leads Pin 6 is connected to pin 3 of variable resistor RV2.

According to one aspect of the present invention, the high-frequency ultrasonic transmitter module includes a transistor Q7, a diode D3, a diode D4, a diode D6, a transistor Q6, a resistor R13, a capacitor C6, a resistor R12, a diode D5, a transistor Q5, and a transmitter LS1, wherein The collector terminal of the transistor Q7 is respectively connected to pin 6 of the operational amplifier U2 and the pin 3 of the variable resistor RV2; the base terminal of the transistor Q7 is connected to the negative terminal of the diode D3; the emitter terminal of the transistor Q7 is connected to the positive terminal of the diode D4 respectively The emitter terminal of the transistor Q6, the emitter terminal of the transistor Q5, one end of the emitter LS1, and the ground GND are connected; the positive terminal of the diode D3 is connected to the cathode terminal of the diode D4, the cathode terminal of the diode D6, the collector terminal of the transistor Q6, and one end of the resistor R13; The positive terminal of the diode D6 is respectively connected to the positive terminal of the diode D5, the positive terminal of the capacitor C4, one end of the resistor R8, the pin 7 of the operational amplifier U2, the collector terminal of the transistor Q3, the other end of the resistor R11, and the positive terminal of the lamp LED1; the diode D5 The negative terminal is respectively connected to the positive terminal of the capacitor C6, one end of the resistor R12, and the collector terminal of the transistor Q5; the negative terminal of the capacitor C6 is respectively connected to the other end of the resistor R13 and the base terminal of the transistor Q6; the other end of the resistor R12 is respectively connected to the base terminal of the transistor Q5 The extreme, the other end of the transmitter LS1 is connected.

According to one aspect of the present invention, the ultrasonic receiving module includes a receiver LS2, a resistor R14, a capacitor C7, a resistor R15, a capacitor C8, a resistor R17, an operational amplifier U3, a resistor R16, a capacitor C9, a diode D7, a capacitor C10, and a diode D8. , Wherein one end of the receiver LS2 is connected to one end of the resistor R14 and the positive terminal of the capacitor C7; the other end of the resistor R14 is connected to the ground line GND; the negative terminal of the capacitor C7 is connected to one end of the resistor R15; One end is connected to the ground line GND; the other end of the resistor R15 is connected to the pin 3 of the operational amplifier U3 and one end of the resistor R16; the other end of the resistor R16 is connected to the pin 6 of the operational amplifier U3 and one end of the capacitor C9; Amplifier U3 pin 7 and pin 4 are connected to one end of resistor R17, diode D8 positive terminal, capacitor C10 terminal, diode D6 positive terminal, diode D5 positive terminal, capacitor C4 positive terminal, resistor R8 terminal, operational amplifier U2 pin 7, The collector terminal of the transistor Q3, the other end of the resistor R11, and the positive terminal of the lamp LED1 are connected; the other end of the capacitor C10 is connected to the negative terminal of the diode D7; the positive terminal of the diode D7 is respectively connected to the negative terminal of the diode D8 and the other end of the capacitor C9; The other end of the resistor R17 is respectively connected to the operational amplifier U3 pin 2 and the positive terminal of the capacitor C8; the negative terminal of the capacitor C8 is connected to the ground line GND.

According to one aspect of the present invention, the radar receiving control module includes a resistor R20, a resistor R21, a capacitor C11, an operational amplifier U4, a resistor R18, and a resistor R19, wherein one end of the resistor R20 is connected to the pin 7 of the operational amplifier U4 and the operational amplifier. U3 pin 7 and pin 4, one end of resistor R17, diode D8 positive terminal, capacitor C10 terminal, diode D6 positive terminal, diode D5 positive terminal, capacitor C4 positive terminal, resistor R8 terminal, operational amplifier U2 pin 7, transistor Q3 The collector terminal, the other end of the resistor R11, and the positive terminal of the lamp LED1 are connected; the other end of the resistor R20 is connected to one end of the resistor R21, one end of the capacitor C11, and the operational amplifier U4 pin 2; the other end of the resistor R21 is connected to the other end of the capacitor C11. One end, the pin 4 of the operational amplifier U4, one end of the resistor R19, and the ground line GND; the other end of the resistor R19 is connected to one end of the resistor R18; the other end of the resistor R18 is connected to the pin 6 of the operational amplifier U4; the operational amplifier U4 Pin 3 is respectively connected to the other end of capacitor C10 and the negative end of diode D7.

According to one aspect of the present invention, the signal processing module includes a resistor R22, an operational amplifier U5, a resistor R23, an inductor L1, a capacitor C12, a resistor R24, a resistor R24, a diode D9, and a transistor Q7, wherein one end of the resistor R22 is connected to the resistor respectively. The other end of R19 and one end of the resistor R18 are connected; the other end of the resistor R22 is connected to pin 3 of the operational amplifier U5; the pin 2 of the operational amplifier U5 is respectively connected to one end of the resistor R23 and one end of the inductor L1; the pin of the operational amplifier U5 4 are respectively connected to the other end of the resistor R23, the negative terminal of the capacitor C12, and the ground line GND; the pin 7 of the operational amplifier U5 is connected to one end of the resistor R20, the pin 7 of the operational amplifier U4, and the pins 7 and 4 of the operational amplifier U3. One end of resistor R17, the positive terminal of diode D8, one end of capacitor C10, the positive terminal of diode D6, the positive terminal of diode D5, the positive terminal of capacitor C4, one end of resistor R8, the pin 7 of operational amplifier U2, the collector terminal of transistor Q3, the other end of resistor R11, The positive terminal of the lamp LED1 is connected; the pin 6 of the operational amplifier U5 is connected to the emitter terminal and the output terminal OUTPUT of the transistor Q7; the base terminal of the transistor Q7 is connected to the negative terminal of the diode D9; the positive terminal of the diode D9 is connected to the other end of the inductor L1 Connection; The collector terminal of the transistor Q7 is connected to one end of the resistor R24; the other end of the resistor R24 is connected to the positive terminal of the capacitor C12.

According to one aspect of the present invention, the types of the capacitor C4, the capacitor C5, the capacitor C6, the capacitor C7, the capacitor C8, and the capacitor C12 are all electrolytic capacitors; the diode D1, the diode D2, the diode D3, the diode D4, and the diode D7 are all Zener diodes; the transistor Q1, the transistor Q2, the transistor Q4, the transistor Q5, the transistor Q6, the The models of the transistor Q7 are all NPN; the models of the transistor Q3 and the transistor Q7 are both PNP.

According to one aspect of the present invention, a detection method of a high-frequency radar detection circuit for three-dimensional geological survey is characterized by the following steps:

Step 1. Transistor Q1 and transistor Q2 are connected in series to form a Darlington tube. Compared with a transistor, the current amplification factor and current driving ability are improved. The resistance R2 and R3 meet different power supply requirements according to the resistance value. The grounding of the capacitor C1 eliminates the interference frequency band of the input power supply of the regulator U1 for voltage stabilization processing, and optimizes the quality of the output voltage. The output voltage value is changed according to the variable resistor RV1 to meet the operation of the next-level module;

Step 2. The lithium battery B1 stores the obtained regulated power supply and uses it as the reserve power for the operation of the module, and the switch SB1 controls the storage power of the lithium battery B1 on and off, and the transistor Q3 and the transistor Q4 respectively control the direct power supply and the storage power supply. , To ensure that the transmission voltage value is within the conduction range of the transistor;

Step 3. The resistor R8 reduces the voltage value of the transmission power source, so that the operational amplifier U2 converts the acquired electrical signal into a transmission signal, and provides a start instruction to the next module, so that the high-frequency ultrasonic transmitter module generates a transmission band;

Step 4. The receiver LS2 receives the ultrasonic wave transmitted by the transmitter LS1 and encounters the obstacle feedback band, and then performs operational amplification on the received ultrasonic wave band according to the operational amplifier U3, adjusts the order of the receiving band, and filters the operation through the capacitor C8 grounding The extra frequency bands generated at the time, improve the accuracy of detection data;

Step 5. The operational amplifier U4 adjusts the received ultrasonic data through pin 7, and then judges the output condition of the receiving radar band by obtaining the starting voltage, and then consumes the overcurrent of the capacitor C11 through the resistor R21 to ensure that the released current is in safe operation ；

Step 6. The operational amplifier U5 obtains the band signal of the radar receiving control module through the resistor R22, and suppresses the interference of electromagnetic waves on the transmission signal of the operational amplifier U5 through the inductor L1. The diode D9 limits the conduction direction, so that the transistor Q7 can respond quickly, and then the received Ultrasonic waves are transmitted to the display screen to generate a three-dimensional detection image.

Beneficial effect

The invention designs a high-frequency radar detection circuit and its detection method for three-dimensional geological surveys. The traditional radar detection circuit has a narrow detection range and thus limits the exploration of complex geology. By designing an adjustable voltage stabilizing module, the adjustable voltage stabilization is utilized. The variable resistor RV1 in the module changes the stable output voltage, and then expands the transmission power and frequency band under a stable current to generate a high-frequency band, and uses the detection distance to be related to the transmission power and frequency band, thereby expanding the detection range and realizing the scope's flexibility. Adjustability to obtain accurate geological information; the output voltage cannot be kept stable when the power module is provided with maintenance power, and the output voltage can be maintained when the input voltage is unstable by using the voltage stabilizer U1 in the adjustable voltage stabilizer module. It is stable to prevent the output voltage from fluctuating; it will be interfered by electromagnetic fields during the survey of complex geology. By setting up a signal processing module at the radar receiving end, the inductor L1 in the signal processing module effectively suppresses the interference of electromagnetic waves and accurately transmits the radar receiving end. Survey information and improve survey accuracy.

Description of the drawings

Figure 1 is a block diagram of the present invention.

Figure 2 is a distribution diagram of the high-frequency radar detection circuit of the present invention.

Fig. 3 is a circuit diagram of the power storage control module of the present invention.

Fig. 4 is a circuit diagram of the high-frequency ultrasonic transmitter module of the present invention.

Fig. 5 is a circuit diagram of the ultrasonic receiving module of the present invention.

Fig. 6 is a circuit diagram of the signal processing module of the present invention.

Embodiments of the present invention

As shown in Figure 1, in this embodiment, a high-frequency radar detection circuit for three-dimensional geological survey includes:

In a further embodiment, as shown in FIG. 2, the adjustable voltage stabilizing module uses the resistance value of the variable resistor RV1 to change the output voltage value, so as to meet the voltage required for storage;

In a further embodiment, the adjustable voltage stabilizing module includes a resistor R1, a transistor Q1, a transistor Q2, a resistor R2, a resistor R3, a diode D1, a diode D2, a regulator U1, a resistor R4, a capacitor C1, and a variable resistor. RV1, resistance R5.

In a further embodiment, one end of the resistor R1 in the adjustable voltage stabilizing module is respectively connected to the positive terminal of the power supply DC, the collector terminal of the transistor Q1, and the collector terminal of the transistor Q2; the other end of the resistor R1 is respectively connected to the transistor The base terminal of Q1 is connected to the negative terminal of diode D1; the emitter terminal of the transistor Q1 is connected to the base terminal of transistor Q2 and one end of resistor R2; the positive terminal of diode D1 is connected to the negative terminal of diode D2; the positive terminal of diode D2 is connected to the resistor respectively One end of R4, one end of the capacitor C1, one end of the resistor R5, the other end of the capacitor C1, the negative terminal of the power supply DC, and the ground line GND; the other end of the resistor R2 is connected to the emitter terminal of the transistor Q2 and one end of the resistor R3; the other end of the resistor R3 Connected to pin 1 of the voltage stabilizer U1; pin 2 of the voltage stabilizer U1 is connected to the other end of the resistor R4; pin 3 of the voltage stabilizer U1 is connected to pin 2 of the variable resistor RV1; the variable resistor Both pin 1 and pin 3 of RV1 are connected to the other end of resistor R5.

In a further embodiment, as shown in FIG. 3, the power storage control module includes a lithium battery B1, a resistor R6, a switch SB1, a capacitor C2, a resistor R9, a capacitor C3, a resistor R10, a lamp LED1, a transistor Q3, and a transistor Q4. , Resistor R11.

In a further embodiment, the positive terminal of the lithium battery B1 in the power storage control module is connected to one end of the resistor R6, one end of the resistor R10, the emitter terminal of the transistor Q3, the pin 3 of the voltage regulator U1, and the variable resistor RV1. Pin 2 is connected; the negative terminal of the lithium battery B1 is connected to the other end of the resistor R6, one end of the switch SB1, two ends of the capacitor C2, one end of the resistor R9, one end of the capacitor C3, the emitter terminal of the transistor Q4, and the ground wire GND; One end is connected to the other end of the resistor R9, the other end of the capacitor C3, the base terminal of the transistor Q4, and one end of the resistor R11; the other end of the resistor R10 is respectively connected to the base terminal of the transistor Q3 and the collector terminal of the transistor Q4; the collector terminal of the transistor Q3 They are respectively connected to the other end of the resistor R11 and the positive terminal of the lamp LED1; the negative terminal of the lamp LED1 is connected to the ground GND.

In a further embodiment, the signal source module includes a capacitor C4, a resistor R8, a resistor R7, a capacitor C5, an operational amplifier U2, and a variable resistor RV2.

In a further embodiment, the positive terminal of the capacitor C4 in the signal source module is respectively connected to one end of the resistor R8, pin 7 of the operational amplifier U2, the collector terminal of the transistor Q3, the other end of the resistor R11, and the positive terminal of the lamp LED1; The negative terminal of the capacitor C4 is connected to the negative terminal of the capacitor C5, the pin 4 of the operational amplifier U2, and the ground line GND; the positive terminal of the capacitor C5 is connected to the other end of the resistor R8 and the pin 2 of the operational amplifier U2; Pin 3 of U2 is respectively connected to one end of resistor R7, pin 2 and pin 1 of variable resistor RV2; pin 6 of said operational amplifier U2 is connected to pin 3 of variable resistor RV2.

In a further embodiment, as shown in FIG. 4, the high-frequency ultrasonic transmitter module includes a transistor Q7, a diode D3, a diode D4, a diode D6, a transistor Q6, a resistor R13, a capacitor C6, a resistor R12, a diode D5, and a transistor Q5. , Transmitter LS1.

In a further embodiment, the collector terminal of the transistor Q7 in the high-frequency ultrasonic transmitter module is respectively connected to pin 6 of the operational amplifier U2 and pin 3 of the variable resistor RV2; the base terminal of the transistor Q7 is connected to the diode D3. The emitter terminal of the transistor Q7 is connected to the anode terminal of the diode D4, the emitter terminal of the transistor Q6, the emitter terminal of the transistor Q5, the emitter LS1, and the ground GND respectively; the anode terminal of the diode D3 is connected to the cathode terminal of the diode D4, The negative terminal of diode D6, the collector terminal of transistor Q6, and one end of resistor R13 are connected; the positive terminal of diode D6 is connected to the positive terminal of diode D5, the positive terminal of capacitor C4, one end of resistor R8, pin 7 of operational amplifier U2, and collector terminal of transistor Q3. The other end of the resistor R11 is connected to the positive terminal of the lamp LED1; the negative terminal of the diode D5 is respectively connected to the positive terminal of the capacitor C6, one end of the resistor R12, and the collector terminal of the transistor Q5; the negative terminal of the capacitor C6 is connected to the other end of the resistor R13 and the transistor respectively The base terminal of Q6 is connected; the other end of the resistor R12 is respectively connected to the base terminal of the transistor Q5 and the other end of the transmitter LS1.

In a further embodiment, as shown in FIG. 5, the ultrasonic receiving module includes a receiver LS2, a resistor R14, a capacitor C7, a resistor R15, a capacitor C8, a resistor R17, an operational amplifier U3, a resistor R16, a capacitor C9, and a diode D7. , Capacitor C10, diode D8.

In a further embodiment, one end of the receiver LS2 in the ultrasonic receiving module is respectively connected to one end of the resistor R14 and the positive end of the capacitor C7; the other end of the resistor R14 is connected to the ground GND; and the negative end of the capacitor C7 One end of the resistor R15 is connected; the other end of the receiver LS2 is connected to the ground line GND; the other end of the resistor R15 is respectively connected to the pin 3 of the operational amplifier U3 and one end of the resistor R16; the other end of the resistor R16 is respectively connected to the operational amplifier U3 Pin 6 and one end of capacitor C9 are connected; Pin 7 and pin 4 of the operational amplifier U3 are connected to one end of resistor R17, the positive terminal of diode D8, one end of capacitor C10, the positive terminal of diode D6, the positive terminal of diode D5, and the positive terminal of capacitor C4. , One end of the resistor R8, pin 7 of the operational amplifier U2, the collector terminal of the transistor Q3, the other end of the resistor R11, and the positive terminal of the lamp LED1; the other terminal of the capacitor C10 is connected to the negative terminal of the diode D7; the positive terminal of the diode D7 is connected to the positive terminal of the diode D7, respectively The cathode terminal of the diode D8 and the other end of the capacitor C9 are connected; the other end of the resistor R17 is respectively connected to the operational amplifier U3 pin 2 and the positive terminal of the capacitor C8; the negative terminal of the capacitor C8 is connected to the ground GND.

In a further embodiment, the radar receiving control module includes a resistor R20, a resistor R21, a capacitor C11, an operational amplifier U4, a resistor R18, and a resistor R19.

In a further embodiment, one end of the resistor R20 in the radar receiving control module is connected to pin 7 of the operational amplifier U4, pins 7 and 4 of the operational amplifier U3, one end of the resistor R17, the positive terminal of the diode D8, and the capacitor One end of C10, the positive terminal of diode D6, the positive terminal of diode D5, the positive terminal of capacitor C4, one end of resistor R8, the pin 7 of operational amplifier U2, the collector terminal of transistor Q3, the other end of resistor R11, and the positive terminal of lamp LED1 are connected; the resistor R20 The other end is connected to one end of the resistor R21, one end of the capacitor C11, and pin 2 of the operational amplifier U4; the other end of the resistor R21 is connected to the other end of the capacitor C11, the pin 4 of the operational amplifier U4, one end of the resistor R19, and the ground wire GND; The other end of the resistor R19 is connected to one end of the resistor R18; the other end of the resistor R18 is connected to the pin 6 of the operational amplifier U4; the pin 3 of the operational amplifier U4 is respectively connected to the other end of the capacitor C10 and the negative end of the diode D7.

In a further embodiment, as shown in FIG. 6, the signal processing module includes a resistor R22, an operational amplifier U5, a resistor R23, an inductor L1, a capacitor C12, a resistor R24, a resistor R24, a diode D9, and a transistor Q7.

In a further embodiment, one end of the resistor R22 in the signal processing module is connected to the other end of the resistor R19 and one end of the resistor R18; the other end of the resistor R22 is connected to pin 3 of the operational amplifier U5; the operational amplifier Pin 2 of U5 is connected to one end of resistor R23 and one end of inductor L1; Pin 4 of the operational amplifier U5 is connected to the other end of resistor R23, the negative terminal of capacitor C12, and ground GND; Pin 7 of said operational amplifier U5 is connected to One end of resistor R20, pin 7 of operational amplifier U4, pin 7 and pin 4 of operational amplifier U3, one end of resistor R17, the positive terminal of diode D8, one end of capacitor C10, the positive terminal of diode D6, the positive terminal of diode D5, the positive terminal of capacitor C4, One end of the resistor R8, the pin 7 of the operational amplifier U2, the collector terminal of the transistor Q3, the other end of the resistor R11, and the positive terminal of the lamp LED1 are connected; the pin 6 of the operational amplifier U5 is connected to the emitter terminal and the output terminal OUTPUT of the transistor Q7 respectively; The base terminal of the transistor Q7 is connected to the negative terminal of the diode D9; the positive terminal of the diode D9 is connected to the other end of the inductor L1; the collector terminal of the transistor Q7 is connected to one end of the resistor R24; the other end of the resistor R24 is connected to the positive terminal of the capacitor C12.

In a further embodiment, the types of the capacitor C4, the capacitor C5, the capacitor C6, the capacitor C7, the capacitor C8, and the capacitor C12 are all electrolytic capacitors; the diode D1, the diode D2, the diode D3, the diode D4, and the diode D7 are all Zener diodes; the transistor Q1, the transistor Q2, the transistor Q4, the transistor Q5, the transistor Q6, the The models of the transistor Q7 are all NPN; the models of the transistor Q3 and the transistor Q7 are both PNP.

In a further embodiment, a detection method of a high-frequency radar detection circuit for three-dimensional geological survey is characterized by the following steps:

In short, the present invention has the following advantages: using the resistance value of the variable resistor RV1 to change the output voltage value, thereby satisfying the voltage required for storage, and then eliminating the interference frequency band of the input power supply of the regulator U1 for voltage stabilization processing through the grounding of the capacitor C1, Optimize the quality of the output voltage; the power storage control module stores the obtained power, and realizes the control of the storage power by the transistor Q3 through the switch SB1, and the parallel capacitor C2 and the capacitor C3 form the energy storage device to maintain the stability of the transmission voltage and improve the conduction Speed: The signal source module generates a signal command by obtaining the conduction voltage, and the resistance R7 grounding is a protective measure to prevent electrical or electronic equipment from being struck by lightning. The capacitor C4 and the capacitor C5 are connected in parallel to increase the capacity and increase the withstand voltage; high The high-frequency ultrasonic transmitter module generates high-frequency ultrasonic waves through signal instructions, and the transistor Q7 obtains the conduction voltage through the base terminal to realize the conduction instruction, and then through the conduction conversion control of the transistor Q5 and the transistor Q6, the transmitter LS1 is quickly responded; radar receiving control The module adjusts and controls the received waveband signal, and the resistor R21 consumes the overdischarge current that appears in the capacitor C11; the signal processing module repairs the acquired detection waveband, and suppresses the interference of electromagnetic waves through the inductor L1; the present invention realizes accurate detection of complex geology And the treatment of interference frequency bands.

In addition, it should be noted that the various specific technical features described in the foregoing specific embodiments can be combined in any suitable manner, provided that there is no contradiction. In order to avoid unnecessary repetition, various possible combinations are not described separately in the present invention.

Claims

A high-frequency radar detection circuit for three-dimensional geological survey, which is characterized in that it includes the following modules:

Adjustable voltage stabilizing module used to optimize the obtained input power and adjust the regulated output voltage;

The power storage control module used to store the regulated and stabilized power supply, and then control the operation of the next-level module when it is started;

A signal source module used to obtain the start-up power of the power storage control module to generate signal instructions;

A high-frequency ultrasonic transmitter module used to receive signal instructions fed back by the signal source module to generate high-frequency ultrasonic transmission waves;

The ultrasonic receiver module used to receive the wave band that the high-frequency ultrasonic transmitter module bounces when it encounters an object;

Radar receiving control module for adjusting and controlling the received ultrasonic waves;

It is used to repair the damaged detection signal in the transmission of the radar receiving control module and isolate the signal processing module to prevent the interference band from entering.
A high-frequency radar detection circuit for three-dimensional geological surveys according to claim 1, wherein the adjustable voltage stabilizing module uses the resistance value of the variable resistor RV1 to change the output voltage value, thereby satisfying the storage requirements. Required voltage

The power storage control module stores the acquired power, and realizes the control of the storage power by the transistor Q3 by starting the switch SB1;

The signal source module generates a signal command by obtaining the conduction voltage, and the resistance R7 grounding is a protective measure taken to prevent electrical or electronic equipment from being struck by lightning;

The high-frequency ultrasonic transmitter module generates high-frequency ultrasonic waves through signal instructions, and the transistor Q7 obtains the conduction voltage through the base terminal to realize the conduction instruction;

The radar receiving control module adjusts and controls the received band signal, and the resistor R21 consumes the over-discharge current appearing in the capacitor C11;

The signal processing module repairs the acquired detection band, and suppresses the interference of electromagnetic waves through the inductor L1.
The high-frequency radar detection circuit for three-dimensional geological surveys according to claim 1, wherein the adjustable voltage stabilizing module includes a resistor R1, a transistor Q1, a transistor Q2, a resistor R2, a resistor R3, and a diode D1. , Diode D2, voltage regulator U1, resistor R4, capacitor C1, variable resistor RV1, resistor R5, wherein one end of the resistor R1 is respectively connected to the positive terminal of the power supply DC, the collector terminal of the transistor Q1, and the collector terminal of the transistor Q2; The other end of the resistor R1 is connected to the base terminal of the transistor Q1 and the negative terminal of the diode D1; the emitter terminal of the transistor Q1 is connected to the base terminal of the transistor Q2 and one end of the resistor R2; the positive terminal of the diode D1 is connected to the negative terminal of the diode D2; The positive terminal of the diode D2 is respectively connected to one end of the resistor R4, one end of the capacitor C1, one end of the resistor R5, the other end of the capacitor C1, the negative terminal of the power supply DC, and the ground line GND; the other end of the resistor R2 is respectively connected to the emitter terminal of the transistor Q2 and one end of the resistor R3 Connected; the other end of the resistor R3 is connected to pin 1 of the voltage regulator U1; the pin 2 of the voltage regulator U1 is connected to the other end of the resistor R4; the pin 3 of the voltage regulator U1 is connected to the pin of the variable resistor RV1 2 Connection; both pins 1 and 3 of the variable resistor RV1 are connected to the other end of the resistor R5.
The high-frequency radar detection circuit for three-dimensional geological surveys according to claim 1, wherein the power storage control module includes a lithium battery B1, a resistor R6, a switch SB1, a capacitor C2, a resistor R9, and a capacitor C3. , Resistor R10, lamp LED1, transistor Q3, transistor Q4, resistor R11, wherein the positive terminal of the lithium battery B1 is connected to one end of resistor R6, one end of resistor R10, the emitter terminal of transistor Q3, pin 3 of voltage regulator U1, variable resistor RV1 pin 2 is connected; the negative terminal of the lithium battery B1 is connected to the other end of resistor R6, one end of switch SB1, two ends of capacitor C2, one end of resistor R9, one end of capacitor C3, the emitter terminal of transistor Q4, and the ground wire GND; The other end of SB1 is connected to the other end of the resistor R9, the other end of the capacitor C3, the base terminal of the transistor Q4, and one end of the resistor R11; the other end of the resistor R10 is respectively connected to the base terminal of the transistor Q3 and the collector terminal of the transistor Q4; The electrode ends are respectively connected to the other end of the resistor R11 and the positive end of the lamp LED1; the negative end of the lamp LED1 is connected to the ground GND.
The high-frequency radar detection circuit for three-dimensional geological surveys according to claim 1, wherein the signal source module includes a capacitor C4, a resistor R8, a resistor R7, a capacitor C5, an operational amplifier U2, a variable resistor RV2, wherein the positive terminal of the capacitor C4 is connected to one end of the resistor R8, pin 7 of the operational amplifier U2, the collector terminal of the transistor Q3, the other end of the resistor R11, and the positive terminal of the lamp LED1; the negative terminal of the capacitor C4 is respectively connected to the negative terminal of the capacitor C5 The terminal, the operational amplifier U2 pin 4, and the ground line GND are connected; the positive terminal of the capacitor C5 is connected to the other end of the resistor R8 and the operational amplifier U2 pin 2; the operational amplifier U2 pin 3 is respectively connected to one end of the resistor R7, The pin 2 of the variable resistor RV2 is connected to the pin 1; the pin 6 of the operational amplifier U2 is connected to the pin 3 of the variable resistor RV2.
The high-frequency radar detection circuit for three-dimensional geological surveys according to claim 1, wherein the high-frequency ultrasonic transmitter module includes a transistor Q7, a diode D3, a diode D4, a diode D6, a transistor Q6, and a resistor R13. , Capacitor C6, resistor R12, diode D5, transistor Q5, transmitter LS1, wherein the collector terminal of the transistor Q7 is connected to pin 6 of the operational amplifier U2 and pin 3 of the variable resistor RV2; the base terminal of the transistor Q7 is connected to The cathode terminal of the diode D3 is connected; the emitter terminal of the transistor Q7 is connected to the anode terminal of the diode D4, the emitter terminal of the transistor Q6, the emitter terminal of the transistor Q5, the emitter LS1, and the ground GND; The positive terminal of the diode D6 is connected to the positive terminal of the diode D5, the positive terminal of the capacitor C4, one end of the resistor R8, pin 7 of the operational amplifier U2, and the collector terminal of the transistor Q3. The electrode terminal, the other end of the resistor R11, and the positive terminal of the lamp LED1 are connected; the negative terminal of the diode D5 is respectively connected to the positive terminal of the capacitor C6, one end of the resistor R12, and the collector terminal of the transistor Q5; the negative terminal of the capacitor C6 is respectively connected to the other end of the resistor R13 The base terminal of the transistor Q6 is connected; the other end of the resistor R12 is connected to the base terminal of the transistor Q5 and the other end of the transmitter LS1 respectively.
A high-frequency radar detection circuit for three-dimensional geological surveys according to claim 1, wherein the ultrasonic receiving module includes a receiver LS2, a resistor R14, a capacitor C7, a resistor R15, a capacitor C8, a resistor R17, Operational amplifier U3, resistor R16, capacitor C9, diode D7, capacitor C10, and diode D8, wherein one end of the receiver LS2 is respectively connected to one end of the resistor R14 and the positive end of the capacitor C7; the other end of the resistor R14 is connected to the ground GND; The negative terminal of the capacitor C7 is connected to one end of the resistor R15; the other end of the receiver LS2 is connected to the ground line GND; the other end of the resistor R15 is connected to the pin 3 of the operational amplifier U3 and one end of the resistor R16; One end is connected to pin 6 of operational amplifier U3 and one end of capacitor C9; pins 7 and 4 of operational amplifier U3 are connected to one end of resistor R17, the positive terminal of diode D8, one end of capacitor C10, the positive terminal of diode D6, and the positive terminal of diode D5. The terminal, the positive terminal of the capacitor C4, one end of the resistor R8, the operational amplifier U2 pin 7, the collector terminal of the transistor Q3, the other end of the resistor R11, and the positive terminal of the lamp LED1 are connected; the other end of the capacitor C10 is connected to the negative terminal of the diode D7; The positive terminal of the diode D7 is respectively connected to the negative terminal of the diode D8 and the other end of the capacitor C9; the other end of the resistor R17 is respectively connected to the operational amplifier U3 pin 2 and the positive terminal of the capacitor C8; the negative terminal of the capacitor C8 is connected to the ground GND.
A high-frequency radar detection circuit for three-dimensional geological surveys according to claim 1, wherein the radar receiving control module includes a resistor R20, a resistor R21, a capacitor C11, an operational amplifier U4, a resistor R18, and a resistor R19. , Wherein one end of the resistor R20 is connected to pin 7 of the operational amplifier U4, pins 7 and 4 of the operational amplifier U3, one end of the resistor R17, the positive terminal of the diode D8, one terminal of the capacitor C10, the positive terminal of the diode D6, the positive terminal of the diode D5, The positive terminal of the capacitor C4, one end of the resistor R8, the pin 7 of the operational amplifier U2, the collector terminal of the transistor Q3, the other end of the resistor R11, and the positive terminal of the lamp LED1 are connected; the other end of the resistor R20 is connected to one end of the resistor R21, one end of the capacitor C11, and operation The amplifier U4 pin 2 is connected; the other end of the resistor R21 is connected to the other end of the capacitor C11, the operational amplifier U4 pin 4, one end of the resistor R19, and the ground line GND; the other end of the resistor R19 is connected to one end of the resistor R18; The other end of the resistor R18 is connected to the pin 6 of the operational amplifier U4; the pin 3 of the operational amplifier U4 is respectively connected to the other end of the capacitor C10 and the negative terminal of the diode D7.
A high-frequency radar detection circuit for three-dimensional geological surveys according to claim 1, wherein the signal processing module includes resistor R22, operational amplifier U5, resistor R23, inductor L1, capacitor C12, resistor R24, A resistor R24, a diode D9, and a transistor Q7, wherein one end of the resistor R22 is connected to the other end of the resistor R19 and one end of the resistor R18; the other end of the resistor R22 is connected to the pin 3 of the operational amplifier U5; the pin 2 of the operational amplifier U5 Are respectively connected to one end of the resistor R23 and one end of the inductor L1; the pin 4 of the operational amplifier U5 is connected to the other end of the resistor R23, the negative terminal of the capacitor C12, and the ground line GND; the pin 7 of the operational amplifier U5 is connected to one end of the resistor R20, Operational amplifier U4 pin 7, operational amplifier U3 pin 7 and pin 4, one end of resistor R17, the positive terminal of diode D8, one terminal of capacitor C10, the positive terminal of diode D6, the positive terminal of diode D5, the positive terminal of capacitor C4, one end of resistor R8, Pin 7 of the operational amplifier U2, the collector terminal of the transistor Q3, the other end of the resistor R11, and the positive terminal of the lamp LED1 are connected; the pin 6 of the operational amplifier U5 is connected to the emitter terminal and the output terminal OUTPUT of the transistor Q7; the base terminal of the transistor Q7 It is connected to the negative terminal of the diode D9; the positive terminal of the diode D9 is connected to the other end of the inductor L1; the collector terminal of the transistor Q7 is connected to one end of the resistor R24; the other end of the resistor R24 is connected to the positive terminal of the capacitor C12.
A detection method of a high-frequency radar detection circuit used in three-dimensional geological surveys is characterized by the following steps:

Step 1. Transistor Q1 and transistor Q2 are connected in series to form a Darlington tube. Compared with a transistor, the current amplification factor and current driving ability are improved. The resistance R2 and R3 meet different power supply requirements according to the resistance value. The grounding of the capacitor C1 eliminates the interference frequency band of the input power supply of the regulator U1 for voltage stabilization processing, and optimizes the quality of the output voltage. The output voltage value is changed according to the variable resistor RV1 to meet the operation of the next-level module;

Step 2. The lithium battery B1 stores the obtained regulated power supply and uses it as the reserve power for the operation of the module, and the switch SB1 controls the storage power of the lithium battery B1 on and off, and the transistor Q3 and the transistor Q4 respectively control the direct power supply and the storage power supply. , To ensure that the transmission voltage value is within the conduction range of the transistor;

Step 3. The resistor R8 reduces the voltage value of the transmission power source, so that the operational amplifier U2 converts the acquired electrical signal into a transmission signal, and provides a start instruction to the next module, so that the high-frequency ultrasonic transmitter module generates a transmission band;

Step 4. The receiver LS2 receives the ultrasonic wave transmitted by the transmitter LS1 and encounters the obstacle feedback band, and then performs operational amplification on the received ultrasonic wave band according to the operational amplifier U3, adjusts the order of the receiving band, and filters the operation through the capacitor C8 grounding The extra frequency bands generated at the time, improve the accuracy of detection data;

Step 5. The operational amplifier U4 adjusts the received ultrasonic data through pin 7, and then judges the output condition of the receiving radar band by obtaining the starting voltage, and then consumes the overcurrent of the capacitor C11 through the resistor R21 to ensure that the released current is in safe operation ；

Step 6. The operational amplifier U5 obtains the band signal of the radar receiving control module through the resistor R22, and suppresses the interference of electromagnetic waves on the transmission signal of the operational amplifier U5 through the inductor L1. The diode D9 limits the conduction direction, so that the transistor Q7 can respond quickly, and then the received Ultrasonic waves are transmitted to the display screen to generate a three-dimensional detection image.