CN207301066U - The self-induction intelligence Multiinputoutput health monitoring equipment of circular cross-section reinforcing bar concrete component - Google Patents

Abstract

The utility model discloses a self-induction intelligent multi-input-output health monitoring device for a circular cross-section reinforced concrete member. The monitoring equipment is attached to the sensors of the circular section concrete elements. Sensors are divided into two types: external sensors and built-in sensors, and the number of sensors is determined by experiments. The monitoring equipment is connected to the sensor of the reinforced concrete member to be measured through a coaxial cable. Monitoring equipment includes control server, communication interface, microprocessor, power divider, program-controlled attenuator, signal source, power amplifier, signal analyzer, matrix switch, switch circuit analog-to-digital converter, mixer, and is completed under program control measurement tasks. The self-induction intelligent multi-input-output sensor produced by the utility model has the same life span as the concrete member itself, and the number of sensors is set according to the quality requirements. It can conveniently detect the health status of concrete components online in real time.

Description

Self-sensing intelligent multi-input-output health monitoring of circular cross-section reinforced concrete members equipment

technical field

The utility model belongs to the detection of building materials and relates to concrete quality testing, in particular to a self-induction intelligent multi-input-output health monitoring device for circular cross-section reinforced concrete components.

Background technique

Concrete is an important engineering material widely used in housing construction, bridge engineering, water conservancy engineering, etc. Concrete health detection and monitoring instruments are technical means to ensure the safe and long-term operation of concrete. Prediction, prediction, and diagnosis of concrete health are one of the main problems urgently needed to be overcome in the world today. Highways, bridges, dams, and other industrial and civil buildings all require regular or real-time health testing and monitoring. However, the existing concrete quality detection methods can not fully meet the needs of construction and development. With the advancement of science and technology, more and more attention has been paid to the quality of concrete today, and the quality detection of concrete is being developed and improved.

Patent No. ZL201620784210.9 "Intelligent Coaxial One-Dimensional Reinforced Concrete Component Dielectric Constant Monitoring Equipment" can monitor the dielectric constant of reinforced concrete in real time, and monitor the health status of concrete at each stage according to the change of concrete dielectric constant. Patent No. ZL201620782788.0 "Monitoring Equipment for One-Dimensional Coaxial Reinforced Concrete Components Based on Equivalent Circuit", uses the concrete material itself as a sensing material, and monitors the health status of concrete by monitoring the one-dimensional coaxial reinforced concrete equivalent circuit model.

Patent No. ZL201520402418.5 "Step tester for one-dimensional concrete health monitoring of reinforced coaxial cable structure" is based on a reinforced coaxial cable model with inner and outer conductors to construct one-dimensional concrete, and the inner and outer conductors are connected to the testing instrument. Test on the test interface. When using a step tester, the inner conductor and outer conductor at one end of the concrete are connected to the test interface of the step tester, and tested by the method of reflected signal delay. When using a vector network analyzer, connect port one of the vector network analyzer to the outer conductor and inner conductor at one end of the concrete to be tested, and use the time-domain S-parameter method for testing. However, the use of a step tester can only measure large concrete, and the use of a vector network analyzer is not conducive to the implementation of real-time online monitoring. Based on the defects of these existing technologies, new technologies are needed to improve concrete quality detection.

Utility model content

The purpose of the utility model is to provide a self-sensing intelligent multi-input-output health monitor for circular cross-section reinforced concrete components, aiming at the defects that the existing concrete components cannot be monitored in real time or the real-time monitoring sensors have short lifespan and need to be replaced regularly.

The purpose of this utility model is achieved in the following way: a self-induction intelligent multi-input-output health monitoring device for a reinforced concrete member with a circular section, characterized in that the measuring device is connected to the sensor of the circular section concrete member.

According to the different positions of the sensors, the sensors on the circular cross-section reinforced concrete members are divided into two types: external sensors and built-in sensors. On the component sensor; the connector of each sensor is connected to one end of the sensor connection line, and the other end of the sensor connection line is connected to the measurement equipment; the measurement equipment consists of a control server, a communication interface, a microprocessor, a power divider, and a program-controlled attenuator , signal source, power amplifier, signal analyzer, matrix switch, switch circuit analog-to-digital converter, mixer.

The external sensor is replaced by part of the stirrups of the one-dimensional reinforced concrete member. An external sensor is set at every interval of I stirrups. Function.

The built-in sensor is added in the one-dimensional reinforced concrete member. The built-in sensor cannot replace the function of the stirrup. The built-in sensor is closely attached to and bound inside the longitudinal bar, and p built-in sensors are evenly arranged in the one-dimensional reinforced concrete. The measuring equipment has more than S switching circuits in total, and the S switching circuits are used for measurement. For the sensor external circular section self-induction intelligent multi-input and output reinforced concrete member, S=k, k is the number of external sensors, for Sensor built-in circular section self-sensing intelligent multi-input and output reinforced concrete member, S=p, p is the number of built-in sensors.

The external sensor material is composed of a steel bar wrapped with an insulating layer. The selection method of the steel bar is the same as that of the stirrup. It complies with the requirements of the existing stirrup design specifications. The external sensor material is wrapped around and bound outside the longitudinal bar. The surrounding method and binding The method complies with the requirements of the existing stirrup design specifications. There are hooks at both ends of the external sensor material. The hooks at both ends are wrapped around the longitudinal ribs at the hooks. The outer conductor and inner conductor of the connector connecting wire are connected, and the connector connecting wire is connected with the connector.

The material of the built-in sensor is the same as that of the external sensor, which is composed of a layer of insulating layer wrapped around the steel bar. Inside the rib, the steel bars at both ends are respectively connected to the outer conductor and inner conductor of the connector connecting wire, and the connector connecting wire is connected to the connector.

The control server of the measuring equipment is connected with the microprocessor through the communication interface, sends control commands to the microprocessor, and receives calculation data of the microprocessor.

The microprocessor is connected with the program-controlled attenuator, signal source, power amplifier, signal analyzer, analog-to-digital converter, matrix switch A, rectangular switch B, and switch circuit to control the operation status of each connected circuit and read from the signal analyzer data.

The signal source is connected with the power divider and the microprocessor, generates a signal under the control of the microprocessor, and transmits the signal to the power divider.

The power divider is connected with the signal source, mixer, and program-controlled attenuator. The signal source generates a test signal and outputs it to the power divider. ;

The program-controlled attenuator is connected with the microprocessor, the power divider, and the signal analyzer, and accepts the control of the microprocessor. One of the signals of the power divider is sent to the input signal terminal of the program-controlled attenuator, and the output signal of the program-controlled attenuator is sent to the signal analyzer. ;

The power amplifier is connected with the microprocessor, the matrix switch B, and the mixer, and is controlled by the microprocessor. The output signal of the mixer is sent to the power amplifier, and the output signal of the power amplifier is sent to the matrix switch B;

The signal analyzer is connected with the microprocessor, the program-controlled attenuator and the matrix switch A, accepts the control of the microprocessor, sends the analysis result to the microprocessor, and receives the output signal of the matrix switch A and the program-controlled attenuator;

The matrix switch B is connected with the microprocessor, the power amplifier and all the switching circuits, and is controlled by the microprocessor. Under the control of the microprocessor, one of the switching circuits is selected first at a time, and the output signal of the power amplifier is sent to the selected switch circuit;

The matrix switch A is connected with the microprocessor, the signal resolver and all the switch circuits, and accepts the control of the microprocessor. Under the control of the microprocessor, one of the switch circuits is first selected each time, and the signal of the selected switch circuit is input to the signal parser;

Each switch circuit is connected with the microprocessor, matrix switch A, and matrix switch B, and each switch circuit is connected with a sensor of the circular section self-induction intelligent multi-input-output reinforced concrete member; under the control of the microprocessor, The switch circuit selects the working or non-working mode. In the non-working mode, the sensor is disconnected from the interface connected to the matrix switch A and the matrix switch B; in the working mode, the sensor is disconnected from one of the interfaces connected to the matrix switch A or matrix switch B. connection; only two switch circuits operate at a time, one of which connects the sensor to matrix switch A and the other connects the sensor to matrix switch B. When the measuring equipment is working, through the control of the switching circuit, matrix switch A and matrix switch B by the microprocessor, one sensor is selected to be connected to the signal resolver, and the other sensor is selected to be connected to the power amplifier;

The mixer is connected with the power divider, the power amplifier, and the analog-to-digital converter, the output signal of the analog-digital converter and one of the output signals of the power divider are sent to the mixer, and the output signal of the mixer is sent to the power amplifier;

The analog-to-digital converter is connected with the microprocessor and the mixer, accepts the control of the microprocessor, and sends the output data to the mixer.

The positive effect of the utility model is:

Aiming at the defects that the existing reinforced concrete components cannot be monitored in real time or the real-time monitoring sensors have short service life and need to be replaced regularly, a self-sensing intelligent multi-input-output health monitoring method for circular cross-section reinforced concrete components is provided. On the basis of complying with the existing design codes of concrete components, the method skillfully utilizes the stirrup manufacturing method of reinforced concrete components to complete sensor production. The reinforced concrete component itself is used as the self-sensing intelligent multiple input and output, the life of the sensor is as long as the life of the concrete, and the number of sensors can be designed according to the quality requirements of the concrete component. The new type can conveniently detect and monitor the health status of the one-dimensional concrete with a circular cross-section online in real time, detect the pathological changes of the concrete in time, and give an early warning.

Description of drawings

Fig. 1 is a design structure diagram of a one-dimensional reinforced concrete with a circular section and an external sensor.

Figure 2 is a structural diagram of an external sensor.

Figure 3 is a cross-sectional view of the external sensor.

Fig. 4 is a one-dimensional reinforced concrete design structure diagram with a built-in sensor and a circular section.

Figure 5 is a structural diagram of the built-in sensor.

Fig. 6 is a structural diagram of the measuring equipment.

Figure 7 is a circuit diagram of the signal source.

Fig. 8 is a circuit diagram of a power amplifier of the measuring device.

Fig. 9 is a circuit diagram of a programmable attenuator of the measuring device.

10 to 11 are circuit diagrams of the signal analyzer of the measuring equipment.

Fig. 12 is a circuit diagram of the analog-to-digital converter of the measuring device.

Figure 13. Mixer circuit diagram of the measuring device.

In the figure, 1-1～1-k external sensor, 2-1～2-n stirrup, 3-1～3-m longitudinal reinforcement, 4 longitudinal reinforcement at the hook, 5 hook, 6 connector, 7 Connector cable, 8 steel bars, 9 insulating layer, 10-1~10-p built-in sensor, 11 control server, 12 communication interface, 13 microprocessor, 14 power divider, 15 program-controlled attenuator, 16 signal source, 17 power amplifier, 18 signal resolver, 19-1 matrix switch A, 19-2 rectangular switch B, 20-1~20-S switch circuit, 21-1~21-S sensor, 22 circular section self-sensing intelligent multi Input and output reinforced concrete members, 23 analog-to-digital converters, 24 mixers, 25 measuring equipment.

Detailed ways

The health monitoring of the concrete elements is done by measuring equipment connected to the sensors of the circular cross-section concrete elements. According to the position of the transmitting sensor and the receiving sensor, the sensors on the circular cross-section concrete members are divided into two types: external sensors and built-in sensors.

See attached drawings 1-3. When the external sensor is used, the design method of one-dimensional reinforced concrete longitudinal bars and stirrups with a circular cross section is the same as the existing one-dimensional reinforced concrete design method, and follows the existing design specifications. On the basis of the existing one-dimensional reinforced concrete, some stirrups are replaced by external sensors. An external sensor is arranged at intervals of 1 stirrups, and the functions undertaken by the external sensors replace the stirrups, and k external sensors are arranged in total. In addition to the sensing function, the external sensor also has the function of a stirrup. This structure constitutes a sensor-mounted circular cross-section self-sensing intelligent multi-input-output reinforced concrete member.

The external sensor material is composed of a steel bar wrapped with an insulating layer. The selection method of the steel bar is the same as that of the stirrup. It complies with the requirements of the existing stirrup design specifications. The external sensor material is surrounded and bundled outside the longitudinal bar 3-1 ~ 3-m , the encircling method and the binding method comply with the requirements of the existing stirrup design specifications. There are hooks 5 at the two ends of the external sensor material, and the hooks at both ends are wrapped around the longitudinal ribs 4 at the hooks. The connector connecting line adopts a coaxial cable. The steel bars of the end hooks are respectively connected with the outer conductor and the inner conductor of the coaxial cable, and an insulating layer 9 is arranged outside the connecting wire, and the connector connecting line 7 is connected with the connector 6 .

See accompanying drawings 4 and 5. When the built-in sensor is used, the design method of longitudinal reinforcement and stirrup is the same as the existing one-dimensional reinforced concrete design method, and follows the existing design code. On the basis of the existing one-dimensional reinforced concrete, a built-in sensor is added. The built-in sensor does not replace the function of the stirrup. The built-in sensors are closely attached and bound inside the longitudinal reinforcement, and p pieces are evenly arranged in the one-dimensional reinforced concrete. This structure constitutes a sensor built-in rectangular section self-sensing intelligent multi-input-output reinforced concrete member.

The material of the built-in sensor is the same as that of the external sensor, which is composed of a steel bar covered with an insulating layer. The selection of steel bars is the same as that of stirrups, following the requirements of existing design specifications for stirrups. The built-in sensor material is wrapped around and bundled inside the longitudinal ribs. The connecting wire of the connector adopts a coaxial cable, and the steel bars at both ends are respectively connected with the outer conductor and the inner conductor of the connecting wire of the connector, and an insulating layer is provided outside the connecting wire. Coaxial cable and connector connection

See accompanying drawing 6. The measuring equipment is connected to the measured circular cross-section self-sensing intelligent multi-input-output reinforced concrete component sensor through a sensor connecting line. The connector of each sensor is connected to one end of the sensor connection line, and the other end of the sensor connection line is connected to the measuring device.

The measuring equipment consists of a control server 11, a communication interface 12, a microprocessor 13, a power divider 14-1, 14-2, a program-controlled attenuator 15-1, 15-2, a signal source 16, a power amplifier 17, and a signal analyzer 18 , matrix switches 19-1, 19-2, switch circuits 20-1-20-S, analog-to-digital converter 23, and mixer 24.

The circular cross-section self-sensing intelligent multi-input-output sensor for reinforced concrete members, no matter the connector of the built-in sensor or the external sensor, is connected to one end of the sensor connection line, and the other end of the sensor connection line is connected to a switch circuit of the measuring device . The measuring equipment has more than S switch circuits in total, among which S switch circuits are used for measurement. For the sensor external circular cross-section self-induction intelligent multi-input and output reinforced concrete member, S=k, for the sensor built-in circular cross-section self-induction Intelligent multi-input and output reinforced concrete member, S=p.

The control server 11 of the measuring device is connected with the microprocessor 13 through the communication interface 12, sends control commands to the microprocessor, and receives calculation data of the microprocessor.

Microprocessor 13 and programmable attenuator 15, signal source 16, power amplifier 17, signal resolver 18-1, 18-2, analog-to-digital converter 23, matrix switch A 19-1, rectangular switch B 19-2, switch The circuits 20-1 to 20-S are connected to control the running status of each connected circuit and read data from the signal analyzer.

The signal source 16 is connected with the power divider 14 and the microprocessor, generates a signal under the control of the microprocessor, and transmits the signal to the power divider.

Power divider is connected with signal source 16, mixer 24, program-controlled attenuator 15, and signal source 16 produces test signal output to power divider 14, and power divider 14 divides the signal that signal source 16 produces into 2 paths, sends to respectively Mixer 24, programmable attenuator 15.

The program-controlled attenuator 15 is connected with the microprocessor 13, the power divider 14, and the signal resolver 18, and accepts the control of the microprocessor. One of the signals of the power divider 14 is delivered to the input signal end of the program-controlled attenuator 15, and the program-controlled attenuator 15 The output signal is fed to a signal analyzer 18 .

Power amplifier 17 is connected with microprocessor 13, matrix switch B 19-2, mixer 24, accepts microprocessor control, mixer 24 output signals are delivered to power amplifier 17, and power amplifier 17 output signals are delivered to matrix switch B 19-2.

Signal resolver 18 is connected with microprocessor 13, program-controlled attenuator 15, matrix switch A 19-1, accepts microprocessor control, sends analysis result to microprocessor, receives matrix switch A 19-1 and program-controlled attenuator 15 output signal.

Matrix switch B 19-2 is connected with microprocessor 13, power amplifier 17 and all switch circuits, accepts microprocessor control, and under microprocessor control, selects one of the switch circuits first at a time, and outputs power amplifier The signal is delivered to the selected switching circuit.

Matrix switch A is connected with microprocessor 13, signal resolver 18 and all switch circuits, and accepts the control of microprocessor. The signal is input to a signal analyzer 18 .

Each switch circuit is connected with microprocessor 13, matrix switch A 19-1, matrix switch B 19-2, and each switch circuit is connected with a sensor of circular section self-induction intelligent multi-input-output reinforced concrete member; Under the control of the microprocessor, the switch circuit selects the working or non-working mode. In the non-working mode, the sensor is disconnected from the interface connected to the matrix switch A19-1 and the matrix switch B 19-2; in the working mode, the sensor and Connect one of the interfaces of matrix switch A 19-1 or matrix switch B 19-2; only two switch circuits work at a time, one of which connects the sensor to matrix switch A 19-1 and the other switch connects the sensor to Matrix switch B 19-2. When the measuring equipment is working, through the control of the microprocessor 13 on the switch circuits 20-1 to 20-S, the matrix switch A 19-1 and the matrix switch B19-2, one sensor is selected to be connected to the signal analyzer 18, and another sensor is selected Connect to power amplifier 17.

The mixer 24 is connected with the power divider 14, the power amplifier 17, and the analog-to-digital converter 23, and the output signal of the analog-to-digital converter 23 and one of the output signals of the power divider 14 are sent to the mixer 24, and the mixer 24 outputs The signal is sent to the power amplifier 17.

The analog-to-digital converter 23 is connected with the microprocessor 13 and the mixer 24), accepts the control of the microprocessor, and sends the output data to the mixer 24.

The microprocessor of this embodiment adopts the ZC706 development board produced by American XILINX. The communication interface is the serial interface of ZC706, and the power divider adopts SHX-GF2-100 produced by Shanghai Huaxiang Computer Communication Engineering Co., Ltd. Both matrix switch A and matrix switch B are made by American Dow-Key Microwave, model number: 3203-8X8-ENET. The switch circuit selects SHX801-01 from Shanghai Huaxiang Computer Communication Engineering Co., Ltd. The control server adopts ordinary desktop or notebook computer.

See Figure 7 for the signal source circuit diagram. In the figure, US1: ADF4350, produced by American ANALOG DEVICES company. US2: 26MHZ active crystal oscillator. US3: ADF4153, produced by American ANALOG DEVICES company.

CLKA, DATAA, LEA, CLKB, DATAB, LEB, MUXS, MUXO, LD are connected to the IO pins of ZC706. Connect RFOUTA to the input of the power splitter.

See accompanying drawing 8 power booster circuit diagram. UG1HMC921, produced by American ANALOG DEVICES company. S_OUT is connected to the mixer, and RFOUT is connected to matrix switch B.

Fig. 9 is a circuit diagram of a programmable attenuator of the measuring device. Programmable attenuator A and programmable attenuator B use the same circuit. UD6: integrated circuit, model: PE43704, produced by Peregrine Semiconductor Corp of the United States.

A0, A1, A2, D0, D1, D2, D3, D4, D5, D6, SI, CLK, LE, P/S are connected to the IO pins of ZC706.

10 to 11 are circuit diagrams of the signal analyzer of the measuring equipment.

UR1: AD9361 produced by Analog Devices, USA.

UR2, UR3: TCM1-63AX+ produced by American Mini-Circuits Company.

JP1, JP2, JP3: BNC connectors.

The names in the two groups of circuits are AUXADC, AUXDAC1, AUXDAC2, RX_F_N, RX_F_P, TX_F_N, TX_F_P, SPIDO, SPIDI, SPICLK, SPIEN, CLKOUT, RESETB, EN, ENAGC, F_CLK_N, F_CLK_P, D_CLK_N, D_CLK_P, TXNRX, P0_D[0 :11], P1_D[0:11], GPIO[0:3], CTRLIN[0:3], CTRLOUT[0:7] are all connected to the IO pins of ZC706.

Fig. 12 is a circuit diagram of the analog-to-digital converter of the measuring device. In the figure, U5: AD9643, produced by American ANALOG DEVICES company. VINA-, VINA+ are connected to the mixer,

SCLK, SDO, CLK+, CLK-, D0+, D1+,..., D13+, D0-, D1-,..., D13-, are all connected to the IO interface of ZC706.

Fig. 13 is a circuit diagram of a mixer of the measuring device. UH1: ADL5350, produced by American ANALOG DEVICES company. S_OUT is connected to the power amplifier, VOUTA is connected to the output of the analog-to-digital converter, and RF_INA is connected to the power divider.

Claims (3)

1. a kind of self-induction intelligence Multiinputoutput health monitoring equipment of circular cross-section reinforcing bar concrete component, its feature exist In：Measuring apparatus is connected on the sensor of circular cross-section reinforcing bar concrete component；

According to the difference of sensing station, the sensor on circular cross-section reinforcing bar concrete component is divided into external sensor and interior Put two kinds of formula sensor, to be connected to measured circular cross-section self-induction intelligence multi input defeated by measuring connecting line for measuring apparatus Go out on armored concrete member sensor；The connector of each sensor is connected with sensing one end of connecting line, senses connecting line The other end is connected to measuring apparatus；Measuring apparatus is by control server (11), communication interface (12), microprocessor (13), work(point Device (14), programmable attenuator (15), signal source (16), power amplifier (17), signal resolution device (18), matrix switch A (19- 1) formed with matrix switch B (19-2), on-off circuit (20-1~20-S), analog-digital converter (23), frequency mixer (24)；

External sensor is substituted by the part stirrup of one-dimensional reinforced concrete member；It is external at interval of I roots stirrup setting one Formula sensor, external sensor set k altogether, and external sensor also has stirrup function concurrently in addition to having sensing function；

Built-in sensor adds in one-dimensional reinforced concrete member, and built-in sensor cannot substitute stirrup function, built-in Formula sensor is close to and is bound inside vertical muscle, and p built-in sensor is evenly arranged in one-dimensional armored concrete；

A total of more than S on-off circuit of measuring apparatus, S on-off circuit therein is used to measure, for sensor built-out type Circular cross-section self-induction intelligence Multiinputoutput reinforced concrete member, S=k, k are external sensor number, for sensing The built-in circular cross-section self-induction intelligence Multiinputoutput reinforced concrete member of device, S=p, p are built-in sensor number.

2. the self-induction intelligence Multiinputoutput health monitoring of circular cross-section reinforcing bar concrete component as claimed in claim 1 is set It is standby, it is characterised in that：The external sensor material is made of one layer insulating of reinforcing bar outsourcing, external sensor rings of material Around and be banded in outside vertical muscle (3-1~3-m), have crotch (5) in two terminations of external sensor material, the crotch at both ends twines Indulge muscle (4) at crotch, connector connecting line (7) uses coaxial cable, the reinforcing bar of both ends crotch respectively with connector connecting line Outer conductor connected with inner wire, connector connecting line (7) is connected with connector (6)；

The built-in sensor material and external sensor material identical, by reinforcing bar (8) outsourcing one layer insulating (9) structure Into, built-in sensor rings of material around and be banded in inside vertical muscle (3-1~3-m), the reinforcing bar (8) at both ends connects with connector respectively The outer conductor of wiring is connected with inner wire, and connector connecting line (7) is connected with connector (6).

3. the self-induction intelligence Multiinputoutput health monitoring of circular cross-section reinforcing bar concrete component as claimed in claim 1 is set It is standby, it is characterised in that：The control server (11) of the measuring apparatus is connected by communication interface (12) with microprocessor (13), Control command is sent to microprocessor, microprocessor is received and calculates data；

Microprocessor (13) turns with programmable attenuator (15), signal source (16), power amplifier (17), signal resolution device, modulus Parallel operation (23), matrix switch A (19-1), rectangle switch B (19-2), on-off circuit (20-1~20-S) connection, control each connection The operating status of circuit, and read data from signal resolution device：

Signal source (16) is connected with power splitter (14) and microprocessor, produces signal under control of the microprocessor, signal is passed It is defeated by power splitter；

Power splitter is connected with signal source (16), frequency mixer (24), programmable attenuator (15), and it is defeated that signal source (16) produces test signal Go out to power splitter (14), power splitter (14) and the signal that signal source (16) produces be divided into 2 tunnels, be conveyed to respectively frequency mixer (24), Programmable attenuator (15)；

Programmable attenuator (15) is connected with microprocessor (13), power splitter (14), signal resolution device (18), receives microprocessor control System, power splitter (14) wherein signal is conveyed to programmable attenuator (15) input signal end all the way, programmable attenuator (15) it is defeated Go out signal and be conveyed to signal resolution device (18)；

Power amplifier (17) is connected with microprocessor (13), matrix switch B (19-2), frequency mixer (24), receives microprocessor Control, frequency mixer (24) output signal are conveyed to power amplifier (17), and power amplifier (17) output signal is conveyed to matrix Switch B (19-2)；

Signal resolution device (18) is connected with microprocessor (13), programmable attenuator (15), matrix switch A (19-1), receives micro- place Device control is managed, gives analysis result to microprocessor, the output letter of receiving matrix switch A (19-1) and programmable attenuator (15) Number；

Matrix switch B (19-2) is connected with microprocessor (13), power amplifier (17) and all on-off circuits, is received micro- Processor controls, and under micro-processor control, first selects one of on-off circuit every time, and by power amplifier output signal It is transported to selected on-off circuit；

Matrix switch A is connected with microprocessor (13), signal resolution device (18) and all on-off circuits, receives microprocessor Control, under micro-processor control, first selects one of on-off circuit, and selected on-off circuit signal is inputted every time To signal resolution device (18)；

Each on-off circuit is connected with microprocessor (13), matrix switch A (19-1), matrix switch B (19-2), and each opens Powered-down road is connected with a sensor of circular cross-section self-induction intelligence Multiinputoutput reinforced concrete member；In microprocessor Control under, on-off circuit selection work or not operating mode, under not operating mode, sensor and are connected to matrix switch A The interface of (19-1) and matrix switch B (19-2) disconnect；In the operational mode, sensor and connection matrix switch A (19-1) or One of interface connection of matrix switch B (19-2)；Only two on-off circuit work, one of switch will sensings every time Device is connected to matrix switch A (19-1), another switch connects the sensor to matrix switch B (19-2)；Measuring apparatus works When, by microprocessor (13) to on-off circuit (20-1~20-S), matrix switch A (19-1) and matrix switch B (19-2) Control, selects a sensor to be connected to signal resolution device (18), selects another sensor to be connected to power amplifier (17)；

Frequency mixer (24) is connected with power splitter (14), power amplifier (17), analog-digital converter (23), and analog-digital converter (23) is defeated The signal that wherein exports all the way for going out signal and power splitter (14) gives frequency mixer (24), and frequency mixer (24) output signal gives power Amplifier (17)；

Analog-digital converter (23) is connected with microprocessor (13) and frequency mixer (24), receives microprocessor control, and output data is sent Give frequency mixer (24).