CN212693935U - Measurement is with heart conductance line cable detector - Google Patents

Abstract

The utility model belongs to the field of medical equipment detection, in particular to a measuring core electric conduction wire cable detector, which comprises a host and a slave, wherein the host is provided with an operating keyboard and a display screen, the slave is provided with a test connection area, a plurality of binding posts are arranged in the test connection area, and the host and the slave are both provided with an antenna and a handle; the side surfaces of the host and the slave are respectively provided with an adapter, one end of a tested cable is connected to the adapter of the host, the other end of the tested cable is connected to the adapter of the slave or a corresponding binding post, and the slave is provided with a grounding port; a host function module is integrated in the host, and a slave function module is integrated in the slave; the utility model discloses can carry out automatic measurement to the electrocardio cable of leading within the 3 ~ 61 cores, it is intelligent high to have, characteristics such as small, functional strong, easy operation, very big improvement to the speed and the accuracy of heart electric lead connecting cable technical indicator test.

Description

Measurement is with heart conductance line cable detector

Technical Field

The utility model relates to a medical equipment detection area specifically is a measurement is with heart electric conductance line cable detector.

Background

The cardio-cerebral electrograph apparatus is used as an important apparatus for medical diagnosis and vital sign monitoring, the accurate and reliable magnitude of the medical equipment is particularly important, and the cardio-cerebral electrograph apparatus mainly comprises medical diagnosis equipment such as an electrocardiograph, a digital electrocardiograph, a dynamic movable electrocardiograph, a multi-parameter monitoring system, an electrocardiograph monitor, an electroencephalograph, a digital electroencephalograph, an electroencephalograph, and the like. The electrocardiograph is always present in a metering instrument catalog for implementing mandatory management as a first-level catalog, and it can be seen that the medical equipment always belongs to a metering instrument mandatory verification key supervision object, and the electrocardiograph lead wire is an important component of the electrocardiograph, and the technical state of the electrocardiograph lead wire can have a great influence on a detection result when the medical equipment verification or calibration is implemented, so that how to quickly and accurately judge the technical state of the electrocardiograph lead wire of the electrocardiograph becomes a problem which needs to be faced when the electrocardiograph is implemented for metering verification or calibration.

According to common faults of the cardio-cerebral electrograph equipment used by long-term medical institutions, combing, summarizing and analyzing find that the normal tracing and waveform output of the cardio-cerebral electrograph equipment are influenced by poor contact, short circuit or open circuit of one or more lead lines due to factors such as frequent traction, twisting or improper nursing of the cardio-cerebral electrograph equipment in the using process, and the cardio-cerebral electrograph equipment is common one of the faults of the cardio-cerebral electrograph equipment. The failure phenomenon is characterized in that when a normal person carries out an electrocardiogram, abnormal or serious interference of waveforms of a certain lead or all leads of the electrocardiogram occurs. The failure analysis is that the lead wires of the electrocardiograph are respectively composed of four limbs of red, yellow, blue and black and six chest leads, and the electrocardio signals obtained from the electrodes are sent to the input end of medical equipment such as an electrocardiograph for the tracing after amplification. But poor contact, short circuit or open circuit of one or several lead wires results in signal interruption, severe interference or signal disturbance.

The fault phenomenon of abnormal waveform output of medical equipment such as a cardio-cerebral electrograph also exists frequently in the cardio-cerebral electrograph equipment for medical institution submission, and metering and detecting personnel of a metering and calibrating mechanism can only judge that the medical institution submission equipment is unqualified according to a calibration rule due to lack of tools and means necessary for testing an electrocardio-lead cable, and cannot give accurate and constructive suggestions when the responsible personnel of the medical institution consults specific fault reasons, so that the impression that the technical support provided by the metering and calibrating in the field of quality control of the medical equipment is not accurate enough is easily formed, and a series of adverse effects are brought to the metering and calibrating work in the field of medical profession. Since the ecg lead wire is also an important component of medical equipment such as a cardiac and cerebral electrograph, the detection and determination of the technical state of the ecg lead wire should be paid necessary attention to the metrological examination or calibration worker.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a measurement is with heart electric conductance line cable detector to solve the problem that proposes in the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: a measuring heart conductance online cable detector comprises a host and a slave, wherein an operating keyboard and a display screen are arranged on the host, a test connection area is arranged on the slave, a plurality of binding posts are arranged in the test connection area, and an antenna and a handle are arranged on the host and the slave; the side surfaces of the host and the slave are respectively provided with an adapter, one end of a tested cable is connected to the adapter of the host, the other end of the tested cable is connected to the adapter of the slave or a corresponding binding post, and the slave is provided with a grounding port; the host machine is internally integrated with a host machine function module, and the slave machine is internally integrated with a slave machine function module.

Preferably, the bottom of the antenna is arranged on the host and the slave through ball-type hinges to form a reversible structure.

Preferably, the host and the slave are externally provided with adaptive storage boxes.

Preferably, the host functional module comprises a power module I, a resistance testing module, an on-off testing module, a fault point positioning module, an electrolyte strength testing module and a main control module, wherein the power module I supplies power to each electrical element in the host, and the main control module is respectively connected with the output ends of the resistance testing module, the on-off testing module, the fault point positioning module and the electrolyte strength testing module.

Preferably, the slave function module comprises a power module II, a matrix switch circuit, a voltage measurement circuit and a control module, the power module II supplies power to each electrical element in the slave, and the control module is respectively connected with the control ends of the matrix switch circuit and the voltage measurement circuit.

Preferably, the main control module and the control module are single-chip microcomputers, the main control module mainly comprises a low-power-consumption processor, a true color display screen, a touch screen, an FPGA (field programmable gate array) and a power supply unit, the low-power-consumption processor is an OMAP3730 low-power-consumption processor of TI (transmission analog) and has a main frequency of 1000MHz, a WinCE6.0 operating system is configured, the true color display screen adopts a 10.1-inch TFT (thin film transistor) true color liquid crystal screen and adopts LED (light-emitting diode) backlight to replace an inverter, and the touch screen adopts a TSC2046 touch screen controller.

Preferably, the fault point positioning module comprises signal processing and AD sampling, the output end of the electrolyte strength testing module is connected with the matrix switch circuit and comprises a relay and a boosting module, the resistance testing module comprises a temperature sensor, and the on-off testing module comprises a CPLD circuit, a filter circuit, an amplifying circuit, a signal processing circuit and an AD sampling circuit.

Preferably, the host computer is interconnected with the PC through an RS232 serial port, and has the functions of remote control and data management.

Compared with the prior art, the beneficial effects of the utility model are that:

the utility model provides a cable tester is to the electrocardiograph among the medical institution, digital electrocardiograph, developments movable electrocardiograph, multi-parameter monitor system, ECG monitor, electroencephalograph, supporting ECG lead cable's characteristics and the intelligent check out test set of special development among digital electroencephalograph and the EEG topographic map, can carry out automatic measurement to ECG lead cable within 3 ~ 61 cores, it is intelligent high to have, small, and the function is strong, characteristics such as easy operation, very big improvement speed and accuracy to the test of ECG lead connecting cable technical indicator.

Drawings

Fig. 1 is a schematic view of the overall structure of a master and a slave according to the present invention;

fig. 2 is a schematic diagram illustrating a specific connection between a master function module and a slave function module according to the present invention;

fig. 3 is a schematic block diagram of the main control module of the present invention;

fig. 4 is a schematic block diagram of the fault point locating module of the present invention;

FIG. 5 is a schematic block diagram of a dielectric strength testing module of the present invention;

fig. 6 is a schematic block diagram of the resistance testing module of the present invention;

fig. 7 is a schematic block diagram of the on-off testing module of the present invention.

In the figure: 1. a host; 2. a slave; 3. operating a keyboard; 4. a display screen; 5. a test connection region; 6. a binding post; 7. an antenna; 8. a ball hinge; 9. a handle; 10. an adapter; 11. a ground port; 12. a cable under test; 13. a host function module; 14. and a slave function module.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "vertical", "upper", "lower", "horizontal", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

Example 1: referring to fig. 1-2, the present invention provides a technical solution: a measuring core-conductor cable detector comprises a host 1 and a slave 2, wherein an operating keyboard 3 and a display screen 4 are arranged on the host 1, a test connection area 5 is arranged on the slave 2, a plurality of binding posts 6 are arranged in the test connection area 5, and an antenna 7 and a handle 9 are arranged on the host 1 and the slave 2; the side surfaces of the host 1 and the slave 2 are respectively provided with an adapter 10, one end of a tested cable 12 is connected to the adapter 10 of the host 1, the other end of the tested cable is connected to the adapter 10 of the slave 2 or connected to the corresponding binding post 6, and the slave 2 is provided with a grounding port 11; a master function module 13 is integrated in the master 1, and a slave function module 14 is integrated in the slave 2.

Furthermore, the bottom of the antenna 7 is mounted on the host 1 and the slave 2 through a ball-type hinge 8 to form a reversible structure.

Furthermore, the host 1 and the slave 2 are provided with adaptive storage boxes outside.

In order to meet the portable use requirement, the appearance structure of the electrocardiograph lead cable detector is designed as follows:

a. the main machine shell is formed by aluminum-magnesium alloy, and the adoption of the material meets the structural design principle of small volume, light weight and high reliability;

b. the size of the equipment main machine is fully combined with the characteristics of a man-machine ring, the 10.1 inch liquid crystal display screen and the key layout are taken as the integral layout basis, and the appearance of the equipment main machine is comprehensively designed to be 400mm multiplied by 200mm (length multiplied by width multiplied by height);

c. all keys of the main machine adopt silicon rubber keys, so that the touch feeling is good, the contact is reliable, and the abrasion is not easy to occur;

d. various sockets, switches, keys and the like of the host have waterproof functions;

e. the host can be powered by the battery, and an independent battery cabin is designed outside, so that the battery is convenient to mount and dismount;

f. the outer corners of the host are effectively protected by silicon rubber protective sleeves;

g. the host panel display screen adopts high-brightness and wide-visual-angle liquid crystal display and is matched with a resistance type touch screen, so that the operation and the use are convenient;

h. in order to meet the requirements of vehicle-mounted transportation, a portable box group is configured for the electrocardio connecting wire cable detector, and a host, random data and an adapter are all arranged in the portable box.

Example 2: referring to fig. 3-7, the host functional module 13 includes a first power supply module, a resistance testing module, an on-off testing module, a fault point positioning module, an electrolyte strength testing module, and a main control module, the first power supply module supplies power to each electrical component in the host 1, and the main control module is respectively connected to the output ends of the resistance testing module, the on-off testing module, the fault point positioning module, and the electrolyte strength testing module.

The slave function module 14 comprises a power module II, a matrix switch circuit, a voltage measurement circuit and a control module, wherein the power module II supplies power to each electrical element in the slave 2, and the control module is respectively connected with the control ends of the matrix switch circuit and the voltage measurement circuit.

The intelligent touch screen comprises a main control module and a control module, wherein the main control module and the control module are both single-chip microcomputers, the main control module mainly comprises a low-power-consumption processor, a true color display screen, a touch screen, an FPGA (field programmable gate array) and a power supply unit, the low-power-consumption processor is an OMAP3730 low-power-consumption processor of TI (triple output unit), the main frequency of the low-power-consumption processor is 1000MHz, a WinCE6.0 operating system is configured, the true color display screen adopts a 10.1-inch TFT (thin film transistor) true color liquid crystal screen, an LED (light.

The fault point positioning module comprises signal processing and AD sampling, the output end of the electrolyte strength testing module is connected with the matrix switch circuit and comprises a relay and a boosting module, a temperature sensor is arranged in the resistance testing module, and the on-off testing module consists of a CPLD circuit, a filter circuit, an amplifying circuit, a signal processing circuit and an AD sampling circuit.

The host 1 is interconnected with a PC through an RS232 serial port, and has the functions of remote control and data management.

The working principle is as follows: the host 1 and the slave 2 are in wireless communication through the radio frequency front end of the antenna 7 to realize the issue of a control command, the tested cable 12 is respectively connected to the cable test function interfaces of the host 1 and the slave 2 through the adapter 10 to complete the technical state detection of the tested cable, namely, during the test, one end of the tested cable 12 is connected to the adapter 10 of the host 1, the other end of the tested cable is connected to the adapter 10 of the slave 2 or connected to the corresponding binding post 6, and the adapter 10 of the slave 2 is arranged to meet the test connection of cables of more types.

As shown in fig. 3, the main control module has the characteristics of low power consumption, openness, easy expansion and the like, and mainly comprises a low-power processor, a true color display screen, a touch screen, an FPGA, a power supply unit and the like, wherein a main control device is an OMAP3730 low-power processor of TI, and the main frequency is 1000 MHz. The OMAP3730 processor contains two CPUs in one package, a high-end Cortex-A8 ARM CPU can be used to run systems and applications, and another TMS32064x DSP can be used for digital signal processing. The OMAP3730 processor can extend interfaces such as GPMC, USB, RS232, RS485, GPIO and the like. The processor is provided with 1 piece of 256MB Mobile DDR and 512MB Nand Flash chip. The low voltage Mobile DDR has very low power consumption when the application is running normally or waiting. The portal uses a LAN9220 network controller. The TPS65930 serves as a system power management, keyboard interface and slave USB interface chip. The resistance touch screen adopts a TSC2046 touch screen controller; the display adopts a 10.1-inch TFT true color liquid crystal screen, and the LED backlight is adopted to replace an inverter, so that the power consumption of the liquid crystal screen is greatly reduced. And the OMAP3730 system main control module is configured with a WinCE6.0 operating system.

As shown in fig. 4, the fault point locating module realizes the fault point locating of the tested cable according to TDR (time domain reflectometry), according to the transmission line principle, a signal is transmitted in the transmission line, if the impedance of the transmission line changes, one part of the signal is reflected back, and the other part of the signal continues to be transmitted. The ratio of the amplitude of the reflected signal to the incident signal is the reflection coefficient:

V_Fto reflect a voltage, V_inIs an incident voltage, Z₁Is the impedance of the area in which the signal is initially located, Z₂ρ is the impedance of the signal entering the region after the impedance change, and is the reflection coefficient.

When the transmission line is open-circuited, Z₂Infinite, with a reflection coefficient of 1, the signal is totally reflected back. When the transmission line is short-circuited, Z₂Is 0, the reflection coefficient is-1, and the signal is totally reflected back in the opposite direction.

When the position of a fault point is tested, the main control module controls the fault point testing module to send out ns-level width pulse signals, the pulse signals are transmitted to a wire core of the tested cable 12 through the signal processing circuit, the signals are transmitted along the tested cable 12, and when the signals are transmitted to the fault point, the signals are all returned to the signal transmitting end according to the transmission line theory. The transmitting signal and the reflected signal are processed by the signal processing circuit and then enter the AD for sampling, sampling data are uploaded to the CPU for analysis, the CPU obtains the time t from the transmitting signal to the reflected signal according to two times of sampling analysis calculation, then the distance from the breakpoint to the signal transmitting end is S/2 according to S ═ v × t, wherein v is the transmission speed of the signal in the cable to be detected.

As shown in fig. 5, the dielectric strength testing module tests the dielectric strength between the outer insulating layer and the inner core wire of the lead wire. When the test is started, the CPU controls the boosting module to boost the input voltage to a half of the specified voltage, and then the voltage is boosted to the specified voltage value within 10 s. When the current detection circuit detects that the current value exceeds a set threshold value, the single chip microcomputer control system controls the relay switch circuit to be disconnected. And in the set time, if the current value does not exceed the set alarm threshold value, the single chip microcomputer controls the relay switch circuit to disconnect the test circuit, and the result is uploaded to the main control module and displayed on the display screen.

As shown in FIG. 6, since the impedance of the ECG line is generally 0.6-0.7 ohm, the impedance of the ECG line cannot be accurately obtained by the conventional measurement method, so the four-wire Kelvin measurement method is selected.

The constant current source circuit in the resistance test module generates a constant current of 100mA, the constant current is input into the tested cable 12, the constant current generates a voltage drop after passing through the tested cable 12, the voltage measurement circuit in the slave measures the voltage drop generated by the current passing through the tested cable 12, and the voltage value is uploaded to a CPU of the slave for calculation. And calculating the impedance value of the lead wire according to the R-V/I, wherein I is the constant current 100mA generated by the constant current source, and V is the measured voltage value. The slave computer transmits the calculated impedance value to the host computer through the antenna, and the host computer converts the impedance value into a resistance value at 20 ℃ according to the material temperature coefficient of the tested cable 12 and displays the resistance value on an interface.

In order to obtain the precision of 0.1 mu omega, a high-stability constant current source is selected, and the constant current source circuit is shielded to reduce the influence of noise on the constant current source.

As shown in fig. 7, the on-off test module enables detection of the technical state of the tested cable 12 passage, short circuit and open circuit. The signal testing module is composed of a CPLD circuit, a filter circuit, an amplifying circuit, a signal processing circuit, an AD sampling circuit and the like. The test signal is generated by the CPLD, is processed by the filter circuit and the amplifying circuit, is injected into the cable to be tested through the switch matrix module, is switched through the slave, then enters the signal test module through the cable to be tested and the switch matrix module, and enters the AD sampling circuit after being processed. The signal testing module analyzes the AD sampling result and then transmits the AD sampling result to the main control module, and the AD sampling result is analyzed and processed by the main control module and then displayed on the display screen.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (8)

1. A measuring heart conductance online cable detector comprises a host (1) and a slave (2), and is characterized in that the host (1) is provided with an operating keyboard (3) and a display screen (4), the slave (2) is provided with a test connection area (5), the test connection area (5) is internally provided with a plurality of binding posts (6), and the host (1) and the slave (2) are respectively provided with an antenna (7) and a lifting handle (9); the side surfaces of the host (1) and the slave (2) are respectively provided with an adapter (10), one end of a tested cable (12) is connected to the adapter (10) of the host (1), the other end of the tested cable is connected to the adapter (10) of the slave (2) or connected to a corresponding binding post (6), and the slave (2) is provided with a grounding port (11); the host machine (1) is internally integrated with a host machine function module (13), and the slave machine (2) is internally integrated with a slave machine function module (14).

2. The apparatus according to claim 1, wherein the apparatus further comprises: the bottom of the antenna (7) is arranged on the host (1) and the slave (2) through a spherical hinge (8) to form a reversible structure.

3. The apparatus according to claim 1, wherein the apparatus further comprises: and adaptive containing boxes are arranged outside the host (1) and the slave (2).

4. The apparatus according to claim 1, wherein the apparatus further comprises: the host functional module (13) comprises a power supply module I, a resistance testing module, an on-off testing module, a fault point positioning module, an electrolyte strength testing module and a main control module, wherein the power supply module I supplies power for each electrical element in the host (1), and the main control module is respectively connected with the output ends of the resistance testing module, the on-off testing module, the fault point positioning module and the electrolyte strength testing module.

5. The apparatus according to claim 1, wherein the apparatus further comprises: the slave function module (14) comprises a power supply module II, a matrix switch circuit, a voltage measuring circuit and a control module, wherein the power supply module II supplies power to each electrical element in the slave (2), and the control module is respectively connected with the control ends of the matrix switch circuit and the voltage measuring circuit.

6. The apparatus according to claim 4, wherein the apparatus further comprises: the intelligent touch screen comprises a main control module and a control module, wherein the main control module and the control module are both single-chip microcomputers, the main control module mainly comprises a low-power-consumption processor, a true color display screen, a touch screen, an FPGA (field programmable gate array) and a power supply unit, the low-power-consumption processor is an OMAP3730 low-power-consumption processor of TI (triple output unit), the main frequency of the low-power-consumption processor is 1000MHz, a WinCE6.0 operating system is configured, the true color display screen adopts a 10.1-inch TFT (thin film transistor) true color liquid crystal screen, an LED (light.

7. The apparatus according to claim 4, wherein the apparatus further comprises: the fault point positioning module comprises signal processing and AD sampling, the output end of the electrolyte strength testing module is connected with the matrix switch circuit and comprises a relay and a boosting module, a temperature sensor is arranged in the resistance testing module, and the on-off testing module consists of a CPLD circuit, a filter circuit, an amplifying circuit, a signal processing circuit and an AD sampling circuit.

8. The apparatus according to claim 1, wherein the apparatus further comprises: the host (1) is interconnected with a PC (personal computer) through an RS232 serial port, and has the functions of remote control and data management.

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