Cellular communication sphygmomanometer for optimizing TIS index

Abstract

The utility model provides a cellular communication sphygmomanometer for optimizing a TIS (total information sensor) index, which is characterized in that a PCB (printed circuit board) is provided with a PCB signal wire, a display screen is arranged above the PCB, the display screen is connected with the PCB through zebra paper, and the zebra paper is provided with a zebra paper LCD (liquid crystal display) wire. The absolute value of the difference between the sum value of the length of the zebra paper LCD wire and the length of the PCB signal wire and the wavelength value of the specific proportion of the working wavelength is larger than 30, and in the PCB design, the absolute value of the difference between the sum value of the length of the zebra paper LCD wire and the length of the PCB signal wire and the specific value is larger than 30, so that the total lead length of the LCD cannot become an effective radiator, and the service life of the LCD is prolonged. And on the basis of not increasing extra cost, the working channel antenna TIS of the processed honeycomb sphygmomanometer product is improved by 3 to 4 dBm, the effect is remarkable, the working procedures are saved, manpower and material resources are saved, and the product grade is improved.

Description

Technical Field

[0001] The utility model relates to the field of medical devices, specifically to the technical field of medical devices for remote monitoring, and in particular to a cellular communication sphygmomanometer for optimizing TIS indicators. Background Art

[0002] Currently, medical-grade remote monitoring is becoming more and more popular among overseas customers. Blood pressure monitors with high cost-effectiveness and cellular communication play a very important role in providing blood pressure monitoring remote data services for overseas users. Therefore, the radio frequency performance of cellular communication blood pressure monitors has attracted the attention of users, which directly affects the user experience and the competitiveness of cellular communication blood pressure monitor products.

[0003] Usually, LCD traces are needed to connect the product structure of the cellular communication blood pressure monitor together, but the structural connection wires in the cellular communication blood pressure monitor can only be partially set on the PCB circuit board as PCB signal traces, and the other part needs to be realized by zebra paper. However, in actual application, the existence of PCB signal traces and zebra paper LCD traces set on zebra paper will cause interference signals to be formed on the PCB board, and radiate into space through effective radiators, affecting the RF antenna sensitivity of the cellular communication module of the blood pressure monitor, so that the antenna TIS performance index parameters will be reduced. For example, when the cellular communication blood pressure monitor is communicating, the B12M channel TIS will be reduced by 3-4dBm.

[0004] Conventional methods to improve the TIS of cellular communication module antennas are usually to directly stick conductive cloth or copper foil on zebra paper to reduce the impact of radiation. However, this method requires customization of a conductive cloth or copper foil that meets size specifications. This method not only has limited effect in improving TIS parameters, but also generates additional costs for the manufacture of cellular communication blood pressure monitors, wasting manpower and material resources.

[0005] Therefore, there is an urgent need for a cellular communication blood pressure monitor that reduces waste of manpower and material resources and can effectively improve TIS parameters and optimize TIS indicators. Utility Model Content

[0006] In view of the above problems, the purpose of the utility model is to provide a cellular communication sphygmomanometer with optimized TIS index, so as to solve the conventional means of improving the TIS of the cellular communication module antenna, which is usually to directly stick conductive cloth or copper foil on the zebra paper to reduce the radiation effect, but this method requires customization of a conductive cloth or copper foil that meets the size specifications. This method not only has limited improvement on TIS parameters, but also generates additional costs for the manufacture of cellular communication sphygmomanometers, and consumes manpower and material resources.

[0007] The utility model provides a cellular communication sphygmomanometer for optimizing TIS index, comprising a housing, a PCB board arranged on the housing, and a cellular communication module of the sphygmomanometer arranged on the PCB board, wherein:

[0008] A PCB signal trace is arranged on the PCB board; and the PCB signal trace is an LCD trace of the PCB board;

[0009] A display screen is arranged above the PCB board;

[0010] The display screen is connected to the PCB board through zebra paper, and a zebra paper LCD trace is arranged on the zebra paper;

[0011] The absolute value of the difference between the sum of the length of the zebra paper LCD trace and the length of the PCB signal trace and a specific value is greater than thirty; the specific value is a wavelength value of a specific proportion of the working wavelength passing through the PCB signal trace and the zebra paper LCD trace.

[0012] Preferably, the specific ratio is one quarter and one half.

[0013] Preferably, the operating wavelength is 402.024 mm to 411.964 mm.

[0014] Preferably, the values ​​are one quarter and one half of the actual wavelength of the B12 frequency band in the range of 402.024 mm to 411.964 mm.

[0015] Preferably, the sum of the length of the zebra paper LCD trace and the length of the PCB signal trace is less than or equal to 70 mm, or greater than 130 mm and less than 170 mm, or greater than 230 mm.

[0016] Preferably, the length of the PCB signal trace is 30 mm.

[0017] Preferably, the length of the zebra paper LCD trace is in the range of greater than 20 mm and less than or equal to 40 mm, or greater than 100 mm and less than 140 mm, or greater than 200 mm and less than 220 mm.

[0018] Preferably, a sponge gasket is provided between the PCB board and the display screen.

[0019] Preferably, the PCB signal traces and the zebra paper LCD traces are LCD signal lines.

[0020] Preferably, the display screen covers the PCB board and is clamped in a groove of the housing.

[0021] It can be seen from the above technical scheme that the cellular communication sphygmomanometer with optimized TIS index provided by the utility model includes a shell, a PCB board arranged on the shell, and a sphygmomanometer cellular communication module arranged on the PCB board, a PCB signal trace is arranged on the PCB board, a display screen is arranged above the PCB board, the display screen is connected to the PCB board through zebra paper, and a zebra paper LCD trace is arranged on the zebra paper, the absolute value of the difference between the sum of the length of the zebra paper LCD trace and the length of the PCB signal trace and the wavelength value of a specific ratio of the working wavelength is greater than thirty. In the PCB design, when the length of the total LCD conductor (zebra paper L When the sum of the length of the CD trace and the length of the PCB signal trace) is 1 / 2 or 1 / 4 of the working wavelength, the wire and the PCB signal trace are equivalent to RF antennas and will become effective radiators. Therefore, by making the absolute value of the difference between the sum of the length of the zebra paper LCD trace and the length of the PCB signal trace and the specific value greater than thirty, the total wire length of the LCD will not become an effective radiator, and there is no need to add conductive cloth or copper foil. Without adding additional costs, the TIS of the working channel antenna of the cellular blood pressure monitor product after treatment is improved by 3 to 4 dBm, with significant effects, saving processes, manpower and material resources, and improving product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] By referring to the following description in conjunction with the accompanying drawings, and with a more comprehensive understanding of the present invention, other purposes and results of the present invention will become more clear and easy to understand. In the accompanying drawings:

[0023] Figure 1 It is an overall schematic diagram of a cellular communication sphygmomanometer for optimizing the TIS index according to an embodiment of the utility model;

[0024] Figure 2 It is an expanded connection diagram of a cellular communication sphygmomanometer for optimizing TIS index according to an embodiment of the utility model;

[0025] Among them, the figure markings are: 1. shell; 2. PCB board; 3. display screen; 4. zebra paper. DETAILED DESCRIPTION

[0026] Due to the presence of conductors such as PCB signal traces and zebra paper LCD traces, interference signals will be generated on the PCB board and radiated into space through effective radiators, affecting the RF antenna sensitivity of the cellular communication module of the blood pressure monitor, especially affecting the signal of the B12 frequency band of the LTE module, which is expressed as the antenna TIS performance index parameter. The conventional means of improving the TIS of the cellular communication module antenna is usually to directly stick conductive cloth or copper foil on the zebra paper to reduce the radiation impact, but this method requires the customization of a conductive cloth that meets the size specifications, which will incur additional costs for the manufacture of cellular communication blood pressure monitors, and it will cost a man-hour cost during production and assembly. At the same time, it is inconvenient to operate and unsightly, which reduces the product grade.

[0027] In view of the above problems, the present invention provides a cellular communication sphygmomanometer that optimizes the TIS index. The specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0028] In order to illustrate the cellular communication sphygmomanometer with optimized TIS index provided by the utility model, Figure 1 , Figure 2 The embodiments of the present invention are exemplarily indicated.

[0029] The following description of exemplary embodiments is merely illustrative in nature and is not intended to limit the present invention and its application or use. Technologies and devices known to ordinary technicians in the relevant field may not be discussed in detail, but in appropriate cases, the technologies and devices should be considered as part of the specification.

[0030] like Figure 1 As shown, the utility model provides a cellular communication sphygmomanometer with optimized TIS index, comprising a shell 1, a PCB board 2 arranged on the shell 1, and a sphygmomanometer cellular communication module arranged on the PCB board 2, wherein a PCB signal trace (not shown in the figure) is arranged on the PCB board 2; and the PCB signal trace is an LCD trace of the PCB board; a display screen 3 is arranged above the PCB board 2, and the display screen 3 is connected to the PCB board 2 through a zebra paper 4, and a zebra paper LCD trace (not shown in the figure) is arranged on the zebra paper 4; the absolute value of the difference between the sum of the length of the zebra paper LCD trace and the length of the PCB signal trace and a specific value is greater than thirty; the specific value is a wavelength value of a specific proportion of the working wavelength passing through the PCB signal trace and the zebra paper LCD trace.

[0031] In this embodiment, the display screen covers the PCB board and is clamped in the groove of the shell. A sponge gasket is arranged between the PCB board and the display screen to play a shock-absorbing role between the display screen and the PCB board, thereby increasing the stability of the entire blood pressure monitor.

[0032] In this embodiment, the PCB signal wiring and the zebra paper LCD wiring are LCD signal lines.

[0033] Repeated practice has proved that when the length of the total LCD wire (zebra paper LCD wiring and PCB signal wiring) is 1 / 2 or 1 / 4 of the working wavelength, the total LCD wire is equivalent to an RF antenna and becomes an effective radiator. The interference signal on the PCB board is radiated into space through the effective radiator, affecting the sensitivity of the RF antenna, which is manifested as a low antenna TIS performance index parameter. Therefore, the specific ratio is one quarter and one half.

[0034] In a specific embodiment, the frequency of the B12 band of the LTE module is 728MHz~746MHz. According to the wavelength calculation formula, the wavelength λ=·C / F, the constant C=29991, so the corresponding wavelength of the B12 band is equal to = "C / 728MHz~C / 746MHz"=402.024mm~411.964mm. That is, the working wavelength of the cellular communication sphygmomanometer is 402.024mm~411.964mm, so the specific value is one quarter and one half of the actual wavelength of the B12 frequency band in the range of 402.024mm~411.964mm, that is, when the length of the total LCD wire is closer to one quarter and one half of the actual wavelength of the B12 frequency band in the range of 402.024mm~411.964mm, the radiation is greater, and the farther away from one quarter and one half of the actual wavelength of the B12 frequency band in the range of 402.024mm~411.964mm, the radiation is smaller. As long as the absolute value of the difference between the sum of the length of the zebra paper LCD wiring and the length of the PCB signal wiring and the specific value is greater than thirty, the radiation can be effectively reduced.

[0035] In a specific embodiment, the actual wavelength of the B12 frequency band is 400 mm, so the specific values ​​for this wavelength are 100 mm and 200 mm; that is, when the length of the total LCD wire is closer to 100 mm or 200 mm on the number axis, the radiation is greater, and the farther away from 100 mm or 200 mm, the smaller the radiation. After repeated verification and proof, as long as the absolute value of the difference between the sum of the length of the zebra paper LCD trace and the length of the PCB signal trace and the specific value is greater than thirty, the radiation can be effectively reduced. For example, the LCD bus length can be set to a length less than or equal to 70 mm, between 130 and 170 mm, and greater than 230 mm, that is, the sum of the length of the zebra paper LCD trace and the length of the PCB signal trace is less than or equal to 70 mm, or greater than 130 mm and less than 170 mm, or greater than 230 mm. However, some cellular communication sphygmomanometers are subject to the fact that the total LCD wire must meet the basic functional use of the cellular communication module of the sphygmomanometer, so the total length of the LCD wire cannot be too short, and 50 mm is the limit for basic use. Therefore, the total length of the LCD is greater than 50 mm to adapt to the design of most cellular communication sphygmomanometers. Since the cellular communication sphygmomanometer needs to be as thin and small as possible, it is affected by the limitation of the shell space and the length of the total wire cannot be set too large to avoid not being able to install or expand the space of the cellular communication sphygmomanometer. Therefore, the maximum should not be greater than 250 mm. In summary, the sum of the length of the zebra paper LCD trace and the length of the PCB signal trace is greater than 50 mm and less than or equal to 70 mm, or greater than 130 mm and less than 170 mm, or greater than 230 mm and less than 250 mm. It is the preferred configuration for adapting to most cellular communication sphygmomanometers, which can not only realize the communication function and ensure the spatial configuration of the cellular communication sphygmomanometer, but also avoid making the total LCD wire a radiator, thereby improving the TIS index parameters of the entire cellular communication sphygmomanometer. In addition, there are two major adjustment factors for the length of the total LCD wire: PCB board trace and zebra paper LCD trace. The PCB board trace can be adjusted to a very small extent, which depends largely on adjusting the length of the zebra paper LCD. In the conventional design of cellular communication blood pressure monitors, the general PCB trace is 20 to 50 mm, and in order to ensure that the LCD screen and the MCU-controlled LCD screen can be firmly connected, the length of the zebra paper LCD trace only needs to be greater than 20 mm, and the sum of the lengths of the PCB signal traces must be greater than 50 mm and less than or equal to 70 mm, or greater than 130 mm and less than 170 mm, or greater than 230 mm and less than 250 mm.

[0036] In a more specific embodiment, the length of the PCB signal trace is set to 30 mm, then the length of the zebra paper LCD trace can be set in the range of greater than 20 mm and less than or equal to 40 mm, or greater than 100 mm and less than 140 mm, or greater than 200 mm and less than 220 mm.

[0037] Furthermore, in conventional designs, the length of the LCD bus line is set to 80 mm and the length of the B signal line is set to 30 mm.

[0038] If radiation avoidance is performed by the traditional method of pasting conductive cloth, the conventional design is to set the LCD bus length to 80 mm, that is, the length of the PCB signal trace is set to 30 mm, and the zebra paper LCD trace is set to 50 mm. This traditional method is tested, and the working channels tested are the B12 antenna channel and the B13 antenna channel in the cellular communication module of the blood pressure monitor set on the PCB board. The test data is shown in the following table:

[0039]

[0040] Among them, the above test is aimed at the communication channel of Class M in the 736.5MHz frequency band (the communication frequency band is divided into high (H), medium (M), and low (L)). During the test, the TIS index of the B12 antenna channel is 89dBm, and the TIS index of the B13 antenna channel is 88dBm. That is, even with the conductive cloth, the TIS index is only 88 and 89dBm.

[0041] Therefore, in a more specific embodiment, shortening the length of the zebra paper LCD trace can reduce the total length of the LCD, but it is necessary to meet the normal operation of the cellular communication sphygmomanometer. Therefore, after repeated experiments, the length of the zebra paper LCD trace is shortened to 40 mm, which can not only reduce radiation and improve the TIS parameter index, but also fully meet the normal operation of the cellular communication sphygmomanometer. That is, the length of the total LCD wire (the sum of the length of the zebra paper LCD trace and the length of the PCB signal trace) is set to 70 mm, that is, the sum of the length of the zebra paper LCD trace and the length of the PCB signal trace is 70 mm, the length of the zebra paper LCD trace is 40 mm, and the length of the PCB signal trace is 30 mm.

[0042] The cellular communication blood pressure monitor with a zebra paper LCD trace length of 40 mm and a PCB signal trace length of 30 mm was tested. The working channels of the test were the B12 antenna channel and the B13 antenna channel in the cellular communication module of the blood pressure monitor set on the PCB board. The test data is shown in the following table:

[0043]

[0044] The test data in the above table is still for the communication channel of Class M with a frequency band of 736.5MHz (the communication frequency band is divided into high (H), medium (M), and low (L)). During the test, the test data shows that even without adding conductive cloth, the cellular communication blood pressure monitor with this LCD total length can control the TIS index of the B12 communication channel and the B13 communication channel to 91 and 92Bm respectively, which is better than the traditional effect of adding conductive cloth. It can be seen from the above TIS comparison data that the TIS of the working channel after the length control treatment is improved by 3 to 4dBm, and the effect is very significant. That is, there is no need to add conductive cloth or copper foil. On the basis of not increasing additional costs, the TIS of the working channel antenna of the cellular blood pressure monitor product after treatment is significantly improved, and it saves processes, saves manpower and material resources, and improves product grade.

[0045] As described above, the cellular communication sphygmomanometer with optimized TIS index provided in this embodiment includes a housing, a PCB board arranged on the housing, and a sphygmomanometer cellular communication module arranged on the PCB board, a PCB signal trace is arranged on the PCB board, a display screen is arranged above the PCB board, the display screen is connected to the PCB board through zebra paper, and a zebra paper LCD trace is arranged on the zebra paper, the absolute value of the difference between the sum of the length of the zebra paper LCD trace and the length of the PCB signal trace and the wavelength value of a specific ratio of the working wavelength is greater than thirty. In the PCB design, when the length of the total LCD conductor (zebra paper LCD trace) is greater than thirty, the absolute value of the difference between the sum of the length of the zebra paper LCD trace and the length of the PCB signal trace is greater than thirty. When the sum of the length of the wire and the length of the PCB signal trace) is 1 / 2 or 1 / 4 of the working wavelength, the wire and the PCB signal trace are equivalent to RF antennas and will become effective radiators. Therefore, by making the absolute value of the difference between the sum of the length of the zebra paper LCD trace and the length of the PCB signal trace and the specific value greater than thirty, the total wire length of the LCD will not become an effective radiator, and there is no need to add conductive cloth or copper foil. On the basis of no additional cost, the TIS of the working channel antenna of the cellular blood pressure monitor product after treatment is improved by 3 to 4dBm, with significant effects, saving processes, manpower and material resources, and improving product quality.

[0046] As described above with reference to the accompanying drawings, the cellular communication blood pressure meter with optimized TIS index proposed by the present invention is described by way of example. However, those skilled in the art should understand that various improvements can be made to the cellular communication blood pressure meter with optimized TIS index proposed by the present invention without departing from the content of the present invention. Therefore, the protection scope of the present invention should be determined by the content of the attached claims.

Claims

1. A cellular communication blood pressure meter for optimizing TIS index, comprising a housing, a PCB board arranged on the housing, and a blood pressure meter cellular communication module arranged on the PCB board, characterized in that: A PCB signal trace is arranged on the PCB board; and the PCB signal trace is an LCD trace of the PCB board; A display screen is arranged above the PCB board; The display screen is connected to the PCB board through zebra paper, and a zebra paper LCD trace is arranged on the zebra paper; The absolute value of the difference between the sum of the length of the zebra paper LCD trace and the length of the PCB signal trace and a specific value is greater than thirty; the specific value is a wavelength value of a specific proportion of the working wavelength passing through the PCB signal trace and the zebra paper LCD trace.

2. The cellular communication blood pressure monitor for optimizing the TIS index as claimed in claim 1, characterized in that: The specific ratios are one quarter and one half.

3. The cellular communication blood pressure monitor for optimizing TIS index as claimed in claim 2, characterized in that: The operating wavelength is 402.024 mm to 411.964 mm.

4. The cellular communication blood pressure monitor for optimizing the TIS index as claimed in claim 3, characterized in that: The specific values ​​are a quarter and a half of the actual wavelength of the B12 frequency band in the range of 402.024 mm to 411.964 mm.

5. The cellular communication blood pressure monitor for optimizing TIS index as claimed in claim 4, characterized in that: The sum of the length of the zebra paper LCD trace and the length of the PCB signal trace is less than or equal to 70 mm, or greater than 130 mm and less than 170 mm, or greater than 230 mm.

6. The cellular communication blood pressure monitor for optimizing TIS index as claimed in claim 5, characterized in that: The length of the PCB signal trace is 30 mm.

7. The cellular communication blood pressure monitor for optimizing TIS index as claimed in claim 6, characterized in that: The length range of the zebra paper LCD trace is greater than 20 mm and less than or equal to 40 mm, or greater than 100 mm and less than 140 mm, or greater than 200 mm and less than 220 mm.

8. The cellular communication blood pressure monitor for optimizing TIS index as claimed in claim 7, characterized in that: A sponge gasket is arranged between the PCB board and the display screen.

9. The cellular communication blood pressure monitor for optimizing TIS index as claimed in claim 8, characterized in that: The PCB signal wiring and the zebra paper LCD wiring are LCD signal lines.

10. The cellular communication blood pressure monitor for optimizing TIS index according to claim 9, characterized in that: The display screen covers the PCB board and is clamped in the groove of the housing.

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