Cardio-pulmonary resuscitation pressure multi-point detection method

Abstract

The invention relates to the technical field of cardiopulmonary resuscitation, and particularly discloses a cardiopulmonary resuscitation pressure multi-point detection method, which comprises the following steps: acquiring detection pressure corresponding to each measurement point through a plurality of force sensors; obtaining effective pressing force applied to the human body by the pressing assembly according to the obtained multiple detection pressures; wherein the plurality of force measuring sensors are arranged on the base, and the pressing assembly is connected with the plurality of force measuring sensors through the bearing frame. The pressure of cardio-pulmonary resuscitation is detected by adopting a multi-point detection method, and the influence of horizontal deflection force can be eliminated, so that the detection accuracy of the effective pressing force of the pressing head is improved, more accurate pressure data is provided for the control of the cardio-pulmonary resuscitation process, the pressing quality of cardio-pulmonary resuscitation is ensured, and the first-aid effect is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of cardiopulmonary resuscitation, and more specifically, to a multi-point detection method for cardiopulmonary resuscitation pressure. Background Art

[0002] The cardiopulmonary resuscitation machine uses mechanical action instead of manual chest compressions. It controls the reciprocating motion of the compression head so that it comes into contact with the human body to perform chest compressions.

[0003] The cardiopulmonary resuscitation machines with pressure detection function on the market usually only have a single pressure sensor integrated into the pressing head. Because the human body's outer contour is not a standard plane and there are obvious individual differences between people, it is difficult to make the pressing head fit the human body surface completely. Therefore, when the pressing head presses the human body, due to uneven force, the reaction force formed by the human body on the pressing head is not necessarily in the vertical direction, which will cause the measurement center axis of the pressure sensor and the actual reaction force formed by the human body on the pressing head to not coincide, thereby affecting the accuracy of pressure measurement.

[0004] Therefore, it is necessary to propose a multi-point detection method for cardiopulmonary resuscitation pressure to at least partially solve the problems existing in the prior art. Summary of the invention

[0005] A series of simplified concepts are introduced in the Summary of the Invention, which will be further described in detail in the Detailed Description of the Invention. The Summary of the Invention does not mean to attempt to define the key features and essential technical features of the claimed technical solution, nor does it mean to attempt to determine the scope of protection of the claimed technical solution.

[0006] In order to at least partially solve the above problems, the present invention provides a cardiopulmonary resuscitation pressure multi-point detection method, comprising:

[0007] Acquire the detection pressure corresponding to each measurement point through multiple force sensors;

[0008] Obtaining the effective pressing force exerted by the pressing component on the human body according to the obtained multiple detection pressures;

[0009] Wherein, a plurality of force sensors are arranged on the base, and the pressing assembly is connected to the plurality of force sensors via a supporting bracket.

[0010] Preferably, obtaining the effective pressing force applied by the pressing component to the human body according to the acquired multiple detection pressures includes:

[0011] Obtain the theoretical force acting on the support frame;

[0012] The effective pressing force applied by the pressing component to the human body is obtained based on the multiple detected pressures and the theoretical force.

[0013] Preferably, the theoretical force includes: the total gravity supported by the support frame and the inertia force of the moving parts in the pressing assembly.

[0014] Preferably, the method further comprises: judging the detection pressure of each measuring point according to the standard pressure corresponding to each measuring point, and obtaining a judgment result of whether the pressing position is offset.

[0015] Preferably, it also includes:

[0016] When the pressing head moves to the lowest position, the deflection force of the pressing head in the horizontal direction due to the reaction force of the human body is obtained according to the multiple detection pressures obtained;

[0017] According to the effective pressing force applied by the pressing assembly to the human body and the deflection force in the horizontal direction of the pressing head due to the reaction force of the human body, a vector graph of the human chest rebound force is obtained.

[0018] Preferably, the point where the force sensor is connected to the support bracket is the measuring point, the number of measuring points is an even number, two symmetrically arranged measuring points form a group, and the distances between the two measuring points and the axis of the pressing head are equal.

[0019] Preferably, when the pressing head moves to the lowest position, the deflection force of the pressing head in the horizontal direction due to the reaction force of the human body is obtained according to the obtained multiple detection pressures, including:

[0020] According to the two detection pressures corresponding to each group of measurement points, the measurement force exerted by the force sensor on the measurement points of the pressing component is obtained;

[0021] Based on the measurement force applied to the pressing assembly at each set of measurement points, the first distance between the measurement point and the axis of the pressing head, and the second distance between the bottom surface of the pressing head and the measurement point, the horizontal deflection force of the pressing head corresponding to each set of measurement points due to the reaction force of the human body is obtained.

[0022] Preferably, according to the effective pressing force applied by the pressing assembly to the human body and the deflection force in the horizontal direction of the pressing head due to the reaction force of the human body, a human chest rebound force vector graph is obtained, including:

[0023] Taking the center of the bottom surface of the pressing head as the force origin, according to the effective pressing force applied by the pressing component to the human body, the vertical rebound force vector formed by the human chest cavity on the force origin is obtained;

[0024] According to the deflection force in the horizontal direction of the pressing head corresponding to each group of measurement points subjected to the reaction force of the human body, a plurality of horizontal rebound force vectors formed by the human chest cavity on the force origin are obtained;

[0025] According to the rebound force vector of the force origin in the vertical direction and multiple rebound force vectors in the horizontal direction, a human chest rebound force vector graph is obtained.

[0026] Preferably, it also includes:

[0027] When the pressing position deviates, an alarm will be issued;

[0028] According to the human chest rebound force vector graph, the position of the pressing head is adjusted so that the detection pressure at each measuring point meets its corresponding standard pressure.

[0029] Preferably, judging the detection pressure of each measuring point according to the standard pressure corresponding to each measuring point to obtain the judgment result of whether the pressing position is offset includes:

[0030] Obtain the deviation value between the detection pressure of each measuring point and the corresponding standard pressure;

[0031] If the deviation values ​​of at least two measuring points do not meet the deviation setting threshold, the judgment result is that the pressed position has shifted; if the deviation value of each measuring point meets the deviation setting threshold, the judgment result is that the pressed position has not shifted.

[0032] Compared with the prior art, the present invention has at least the following beneficial effects:

[0033] The multi-point detection method for cardiopulmonary resuscitation pressure described in the present invention can eliminate the influence of horizontal deflection force by detecting the pressure of cardiopulmonary resuscitation using a multi-point detection method, thereby improving the detection accuracy of the effective pressing force of the pressing head, and providing more accurate pressure data for the control of the cardiopulmonary resuscitation process, thereby ensuring the compression quality of cardiopulmonary resuscitation and improving the first aid effect.

[0034] The cardiopulmonary resuscitation pressure multi-point detection method described in the present invention, and other advantages, objectives and features of the present invention will be reflected in part through the following description, and in part will also be understood by technicians in this field through research and practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0036] Figure 1 It is a flow chart of the cardiopulmonary resuscitation pressure multi-point detection method of the present invention;

[0037] Figure 2 A schematic diagram of a cardiopulmonary resuscitation pressure multi-point detection structure used in the cardiopulmonary resuscitation pressure multi-point detection method of the present invention;

[0038] Figure 3 This is a specific flow chart of step S2 in the cardiopulmonary resuscitation pressure multi-point detection method of the present invention;

[0039] Figure 4 This is a flow chart of steps S3 and S4 in the cardiopulmonary resuscitation pressure multi-point detection method of the present invention;

[0040] Figure 5 It is a specific flow chart of step S4 in the cardiopulmonary resuscitation pressure multi-point detection method of the present invention;

[0041] Figure 6 This is a specific flow chart of step S3 in the cardiopulmonary resuscitation pressure multi-point detection method of the present invention;

[0042] Figure 7 It is a schematic diagram of the distribution of force sensors in the cardiopulmonary resuscitation pressure multi-point detection method of the present invention;

[0043] Figure 8 It is a schematic diagram of the vertical and horizontal components of the reaction force generated by the human body on the pressing head in the cardiopulmonary resuscitation pressure multi-point detection method of the present invention;

[0044] Fig. 9 It is a schematic diagram of measuring the force, the first distance and the second distance in the cardiopulmonary resuscitation pressure multi-point detection method of the present invention. DETAILED DESCRIPTION

[0045] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments so that those skilled in the art can implement the invention with reference to the description.

[0046] It should be understood that the terms such as “having”, “including” and “comprising” used herein do not exclude the existence or addition of one or more other elements or combinations thereof.

[0047] like Figure 1-Figure 2 As shown, the present invention provides a multi-point detection method for cardiopulmonary resuscitation pressure, comprising:

[0048] S1, obtaining the detection pressure corresponding to each measurement point through multiple force sensors 2;

[0049] S2, obtaining the effective pressing force applied by the pressing component 4 to the human body according to the obtained multiple detection pressures;

[0050] Among them, a plurality of force sensors 2 are arranged on the base 1 , and the pressing assembly 4 is connected to the plurality of force sensors 2 via the supporting bracket 3 .

[0051] like Figure 2 and Figure 7As shown, the pressing assembly 4 includes: a cylinder 6 connected to the supporting frame 3, a pressing rod 7 capable of axial reciprocating motion is provided inside the cylinder 6, the pressing rod 7 is connected to the driving part through a transmission mechanism, and a pressing head 5 is provided at the end of the pressing rod 7; a plurality of mounting plates 31 corresponding to the force sensor 2 are provided on the supporting frame 3, the mounting plate 31 is fixedly connected to the central mounting point of the force sensor 2, and the peripheral mounting point of the force sensor 2 is fixedly connected to the base 1.

[0052] When performing cardiopulmonary resuscitation, the driving unit works, driving the pressing rod 7 and the pressing head 5 to reciprocate through the transmission mechanism to perform cardiopulmonary resuscitation on the human body; when the pressing head 5 moves to the lowest position, the reaction force formed by the human body on the pressing head 5 will be transmitted to the pressing component 4, and the pressing component 4 is connected to the force sensor 2 through the support frame 3, so the multiple force sensors 2 connected to the support frame 3 will be subjected to tension, and the force sensor 2 can obtain the detection pressure corresponding to the measuring point, and the effective pressing pressure formed by the pressing head 5 on the human body can be obtained through the multiple detection pressures, that is, the pressure in the vertical direction. If the pressing head 5 is unevenly stressed, so that the reaction force formed by the human body on the pressing head 5 forms a certain angle with the vertical direction, the detection pressure obtained by the multiple force sensors 2 can be known, which can eliminate the torque influence in the tilt direction (that is, the influence of the horizontal deflection force) and obtain a more accurate effective pressing pressure.

[0053] The use of a multi-point detection method to detect the pressure of cardiopulmonary resuscitation can eliminate the influence of the horizontal deflection force, thereby improving the detection accuracy of the effective pressing force of the pressing head 5, providing more accurate pressure data for the control of the cardiopulmonary resuscitation process, thereby ensuring the compression quality of cardiopulmonary resuscitation and improving the first aid effect.

[0054] like Figure 3 As shown, in one embodiment, obtaining the effective pressing force applied by the pressing component 4 to the human body according to the acquired multiple detection pressures includes:

[0055] S21, obtaining the theoretical force acting on the support frame 3;

[0056] S22. Obtain the effective pressing force applied by the pressing component 4 to the human body based on the multiple detected pressures and the theoretical force.

[0057] Furthermore, the theoretical force includes: the total gravity supported by the support frame 3 and the inertia force of the moving parts in the pressing assembly 4.

[0058] The total weight supported by the support frame 3 is the sum of the weights of the pressing assembly 4 and the support frame 3;

[0059] The pressing is divided into two stages. Pressing down from the highest point is the acceleration stage, and the final stage of pressing is the deceleration stage. At the final stage of pressing, since the pressing head 5 begins to decelerate, its acceleration direction is upward, and the inertia force of the moving part is downward. The inertia force is the product of the mass of the moving part and its acceleration. Therefore, the entire support frame 3 will be subjected to the upward reaction force formed by the human body on the pressing head 5, the downward gravity and the downward inertia force.

[0060] Therefore, when the pressing head 5 moves to the lowest position, the calculation formula of the effective pressing force applied by the pressing head 5 to the human body is:

[0061] P Z =(P1+P2+…+P n )+G m +P m

[0062] Among them, P Z is the effective pressing force, P1, P2, ..., P n The detection pressures measured by the multiple force sensors 2, G m is the sum of the weights of the pressing assembly 4 and the support bracket 3, P m is the inertia force of the moving parts in the pressing assembly 4.

[0063] Assuming that the force sensor 2 is set to four, then: P Z =(P1+P2+P3+P4)+G m +P m .

[0064] Through the above method, the effective pressing force, that is, the effective vertical pressure, can be obtained through the detection pressure obtained by multiple force sensors 2, which makes the detection of the vertical pressure applied by the pressing head 5 to the human body more accurate.

[0065] In one embodiment, the method further includes: judging the detection pressure of each measuring point according to the standard pressure corresponding to each measuring point, and obtaining a judgment result of whether the pressing position is offset.

[0066] When the pressing head 5 moves to the lowest position and the highest position, the standard pressure corresponding to each measuring point at each position is pre-set, and then the detection pressure of each measuring point is judged according to the standard pressure at each position. It can be obtained whether the position of the pressing head 5 is shifted during the cardiopulmonary resuscitation process, and timely adjustments are made to ensure the stability of the position of the pressing head 5 during the cardiopulmonary resuscitation process and improve the compression quality.

[0067] Furthermore, judging the detection pressure of each measuring point according to the standard pressure corresponding to each measuring point to obtain a judgment result of whether the pressing position is offset includes:

[0068] Obtain the deviation value between the detection pressure of each measuring point and the corresponding standard pressure;

[0069] If the deviation values ​​of at least two measuring points do not meet the deviation setting threshold, the judgment result is that the pressed position has shifted; if the deviation value of each measuring point meets the deviation setting threshold, the judgment result is that the pressed position has not shifted.

[0070] Assume that the number of measuring points is four, and two symmetrically arranged measuring points form a group. If the pressing head 5 is offset in the direction of a group of measuring points, the detection pressure of one of the measuring points becomes larger, and the detection pressure of the other measuring point becomes smaller. When the deviation values ​​of the detection pressures of the two measuring points and the corresponding standard pressures do not meet the set threshold, the judgment result is that the pressing position is offset. If the deviation value of the detection pressure of only one measuring point and the standard pressure does not meet the set threshold, it indicates that the detection pressure obtained by this force sensor 2 is inaccurate and may be damaged.

[0071] like Figure 4 As shown, in one embodiment, it also includes:

[0072] S3, when the pressing head 5 moves to the lowest position, the deflection force of the pressing head 5 in the horizontal direction due to the reaction force of the human body is obtained according to the obtained multiple detection pressures;

[0073] S4. Obtain a human chest rebound force vector graph based on the effective pressing force applied by the pressing component 4 to the human body and the deflection force in the horizontal direction of the pressing head 5 caused by the reaction force of the human body.

[0074] like Figure 8 As shown, the human chest rebound force, that is, the reaction force generated by the human body on the pressing head 5, can obtain the vertical component of the reaction force exerted on the pressing head 5 by the human body through multiple detection pressures (the vertical component is equal to the effective pressing force exerted by the pressing head 5 on the human body, and the two are in opposite directions) and the horizontal component (that is, the horizontal deflection force).

[0075] like Figure 5 As shown, further, according to the effective pressing force applied by the pressing component 4 to the human body and the deflection force in the horizontal direction of the pressing head 5 by the reaction force of the human body, a human chest rebound force vector graph is obtained, including:

[0076] S41, taking the bottom center of the pressing head 5 as the force origin, and obtaining the vertical rebound force vector formed by the human chest cavity on the force origin according to the effective pressing force applied by the pressing component 4 to the human body;

[0077] S42, obtaining a plurality of horizontal rebound force vectors formed by the human chest cavity on the force origin according to the horizontal deflection force of the pressing head 5 corresponding to each group of measurement points under the reaction force of the human body;

[0078] S43. Obtain a human chest cavity rebound force vector graph based on the rebound force vector of the force origin in the vertical direction and multiple rebound force vectors in the horizontal direction.

[0079] The force sensors 2 are preferably arranged in an even number, with two force sensors 2 arranged relatively to each other forming a group. The more groups of force sensors 2 there are, the more deflection forces in the horizontal direction can be obtained, which is more conducive to analyzing the reaction force exerted on the pressing head 5 by the human body; assuming that there are four force sensors 2, two in a group, the number of deflection forces obtained in the horizontal direction is two.

[0080] In one embodiment, the point where the force sensor 2 is connected to the support bracket 3 is a measuring point, the number of measuring points is an even number, two symmetrically arranged measuring points form a group, and the distances from the two measuring points to the axis of the pressing head 5 are equal.

[0081] like Figure 6 As shown, further, when the pressing head 5 moves to the lowest position, the deflection force of the pressing head 5 in the horizontal direction due to the reaction force of the human body is obtained according to the obtained multiple detection pressures, including:

[0082] S31, obtaining the measuring force exerted by the force sensor 2 on the measuring points of the pressing component 4 according to the two detecting pressures corresponding to each group of measuring points; the detecting pressure and the measuring force are equal in magnitude and opposite in direction;

[0083] S32. Based on the measured force exerted on the pressing component 4 at each group of measuring points, the first distance between the measuring point and the axis of the pressing head 5, and the second distance between the bottom surface of the pressing head 5 and the measuring point, the deflection force in the horizontal direction exerted on the pressing head 5 corresponding to each group of measuring points by the reaction force of the human body is obtained.

[0084] The calculation formula of the deflection force of the pressing head 5 in the horizontal direction due to the reaction force of the human body is:

[0085] P i ×h=(P i1 -P i2 )×l i

[0086] Among them, P i The deflection force of the pressing head 5 in the i-axis direction, P i1 and P i2 are the measured forces on the pressing component 4 at two measuring points corresponding to the i-axis direction, and l iis a first distance between the measuring point and the axis of the pressing head 5 in the i-axis direction, and h is a second distance between the bottom surface of the pressing head 5 and the measuring point.

[0087] When the pressing head 5 moves to the lowest position, the instantaneous state is static, and the resultant torque on the entire pressing assembly 4 is zero;

[0088] like Fig. 9 As shown, assuming that there are four force sensors 2, two of which are in the X-axis direction and the other two are in the Y-axis direction, the component force P of the reaction force formed by the human body on the pressing head 5 in the vertical direction (Z-axis direction) can be obtained through the four detection pressures. Z And two components of force P in the horizontal direction X and P Y ; Then the resultant moment of the pressing component 4 in the plane formed by the X-axis and the Z-axis is zero, and the resultant moment in the plane formed by the Y-axis and the Z-axis is zero;

[0089] The vertical force component P Z It can be obtained through the calculation formula of effective pressing force, the two are equal in magnitude and opposite in direction;

[0090] The two components of force P in the horizontal direction X and P Y Obtained by the following formula:

[0091] P X ×h=(P2 ′ -P4 ′ )×l X

[0092] P Y ×h=(P1 ′ -P3 ′ )×l Y

[0093] P X The deflection force of the pressing head 5 in the X-axis direction, P Y The deflection force of the pressing head 5 in the Y-axis direction, P2 ′ and P4 ′ is the measured force on the pressing assembly 4 at two measuring points in the X-axis direction, P1 ′ and P3 ′ is the measured force on the pressing assembly 4 at two measuring points corresponding to the Y-axis direction, l X is a first distance between the measuring point and the axis of the pressing head 5 in the X-axis direction, and h is a second distance between the bottom surface of the pressing head 5 and the measuring point.

[0094] In one embodiment, it further includes:

[0095] When the pressing position deviates, an alarm will be issued;

[0096] According to the human chest rebound force vector graph, the position of the pressing head 5 is adjusted so that the detection pressure at each measuring point meets the corresponding standard pressure.

[0097] When the pressing position shifts, an alarm is promptly issued, and the pressing position of the pressing head 5 is automatically or manually adjusted. The basis for the adjustment is the human chest rebound force vector graph. The human chest rebound force vector graph can be used to know the horizontal deflection direction and the magnitude of the deflection force of the pressing head 5, so that the position of the pressing head 5 is adjusted according to the deflection direction and the magnitude of the deflection force, so that the detection pressure of each measuring point of the pressing head 5 when it moves to the lowest position can meet its corresponding standard pressure, so as to improve the accuracy of the pressing position of the pressing head 5 during cardiopulmonary resuscitation and improve the pressing quality.

[0098] In one embodiment, it further includes:

[0099] Evaluating the detection accuracy of the plurality of force sensors 2 to obtain an evaluation coefficient;

[0100] The evaluation coefficient is compared with the set evaluation value. If the evaluation coefficient is greater than the set evaluation value, the detection accuracy of the multiple force sensors 2 meets the use requirements. If the evaluation coefficient is or equal to the set evaluation value, the detection accuracy of the multiple force sensors 2 does not meet the use requirements.

[0101] In order to further ensure the accuracy of multi-point detection of cardiopulmonary resuscitation pressure, the detection accuracy of the force sensor 2 can be evaluated at set time intervals, for example, an evaluation reminder can be set; specifically, cardiopulmonary resuscitation operations can be performed on a human body model to obtain an evaluation coefficient, and then the evaluation coefficient is judged to determine whether the detection accuracy of the force sensor 2 can meet the use requirements. If not, the force sensor 2 needs to be processed, such as recalibrated or replaced.

[0102] Furthermore, the detection accuracy of the multiple force sensors 2 is evaluated to obtain an evaluation coefficient, including:

[0103] Acquire multiple influencing factors related to the detection accuracy of the force sensor 2;

[0104] Among them, the multiple influencing factors include unstable values ​​of the effective pressing force, calibration errors of the force sensor 2, and temperature deviations;

[0105] An evaluation coefficient is obtained according to the unstable value of the effective pressing force, the calibration error of the force sensor 2 and the temperature deviation;

[0106] The evaluation coefficient is:

[0107]

[0108] in, is the evaluation coefficient, exp[] is an exponential function with e as the base, e is a natural constant, Y1 is the unstable value of the effective pressing force, Y2 is the calibration error of the multiple force sensors 2, Y3 is the temperature deviation, K1, K2 and K3 are the weight coefficients of the unstable value of the effective pressing force, the calibration error of the multiple force sensors 2 and the temperature deviation, respectively, and K1, K2 and K3 are all greater than zero;

[0109] In the above formula, the smaller the unstable value of the effective pressing force, the calibration error of the force sensor 2 and the temperature deviation are, the larger the evaluation coefficient is. The larger the evaluation coefficient is, the better the detection accuracy of the multiple force sensors 2 is. Conversely, the larger the unstable value of the effective pressing force, the calibration error of the force sensor 2 and the temperature deviation are, the smaller the evaluation coefficient is, which indicates that the detection accuracy of the multiple force sensors 2 is worse.

[0110] Through the above method, the evaluation coefficient corresponding to the detection accuracy of the force sensor 2 can be obtained through multiple influencing factors of the force sensor 2, so as to judge the detection accuracy of the force sensor 2 and take measures for the force sensor 2 in time to ensure the accuracy of multi-point detection of cardiopulmonary resuscitation pressure and ensure the quality of cardiopulmonary resuscitation compression.

[0111] Among them, the unstable value Y1 of the effective pressing force is:

[0112]

[0113] Among them, E i is the unstable value of the i-th force sensor 2, n is the number of force sensors 2, m is the number of presses (the detection pressure obtained by the force sensor 2 when the pressing head moves to the lowest position), P j is the jth detection pressure obtained by force sensor 2, P j-1 The j-1th detection pressure obtained by the force sensor 2;

[0114] The unstable value of the effective pressing force is reflected by the unstable values ​​of multiple force sensors 2. Since the effective pressing force in the aforementioned embodiment is the sum of the detection pressures measured by multiple force sensors 2, plus the sum of the gravity of the pressing component 4 and the supporting frame 3, plus the inertia force of the moving parts in the pressing component 4, the sum of the gravity of the pressing component 4 and the supporting frame 3 and the inertia force of the moving parts in the pressing component 4 do not affect the stability of the effective pressing force, so the two do not participate in the calculation; and the instability of each force sensor 2 is calculated by the detection pressure of adjacent pressing times when multiple pressings are performed. Since the object of cardiopulmonary resuscitation is a human model, under normal circumstances, the deviation of the detection pressure obtained at each pressing is small, which can be used as a basis for judging the detection accuracy of the force sensor 2.

[0115] Among them, the calibration error Y2 of multiple force sensors 2 is:

[0116]

[0117] Among them, P ci is the detection pressure obtained by the i-th force sensor 2, P si is the theoretical actual pressure of the i-th force sensor 2;

[0118] The theoretical actual pressure can be understood as the standard for calibrating the force sensor 2. The greater the calibration error of multiple force sensors 2, the greater the error of the detection pressure obtained by the force sensor 2. The higher the degree of deviation from the theoretical actual pressure, the lower the accuracy of the obtained effective pressing force.

[0119] Among them, the temperature deviation Y3 is the absolute value of the difference between the current ambient temperature of the force sensor 2 and the theoretical working temperature; the force sensor 2 has its optimal working ambient temperature, namely the theoretical working temperature, and the pressure value detected by the force sensor 2 is more accurate at this temperature. Therefore, the smaller the difference between the current ambient temperature of the force sensor 2 and the theoretical working temperature, the higher the accuracy of the pressure value detected by it.

[0120] Although the embodiments of the present invention have been disclosed as above, they are not limited to the applications listed in the specification and implementation modes. They can be fully applied to various fields suitable for the present invention. For those familiar with the art, additional modifications can be easily implemented. Therefore, without departing from the general concept defined by the present invention, the present invention is not limited to the specific details and the illustrations shown and described herein.

Claims

1. A cardiopulmonary resuscitation pressure multi-point detection method, characterized in that: include: Acquire the detection pressure corresponding to each measurement point through multiple force sensors; Obtaining the effective pressing force exerted by the pressing component on the human body according to the obtained multiple detection pressures; Wherein, a plurality of force sensors are arranged on the base, and the pressing assembly is connected to the plurality of force sensors via a supporting bracket.

2. The cardiopulmonary resuscitation pressure multi-point detection method according to claim 1, characterized in that: The effective pressing force applied by the pressing component to the human body is obtained according to the obtained multiple detection pressures, including: Obtain the theoretical force acting on the support frame; The effective pressing force applied by the pressing component to the human body is obtained based on the multiple detected pressures and the theoretical force.

3. The cardiopulmonary resuscitation pressure multi-point detection method according to claim 2, characterized in that: The theoretical force includes: the total gravity supported by the support frame and the inertia force of the moving parts in the pressing assembly.

4. The cardiopulmonary resuscitation pressure multi-point detection method according to claim 1, characterized in that: Also includes: The detection pressure of each measuring point is judged according to the standard pressure corresponding to each measuring point to obtain a judgment result of whether the pressing position is offset.

5. The cardiopulmonary resuscitation pressure multi-point detection method according to claim 1 or 4, characterized in that: Also includes: When the pressing head moves to the lowest position, the deflection force of the pressing head in the horizontal direction due to the reaction force of the human body is obtained according to the multiple detection pressures obtained; According to the effective pressing force applied by the pressing assembly to the human body and the deflection force in the horizontal direction of the pressing head due to the reaction force of the human body, a vector graph of the human chest rebound force is obtained.

6. The cardiopulmonary resuscitation pressure multi-point detection method according to claim 5, characterized in that: The point where the force sensor is connected to the support bracket is a measuring point. The number of measuring points is an even number. Two symmetrically arranged measuring points form a group, and the distances from the two measuring points to the axis of the pressing head are equal.

7. The cardiopulmonary resuscitation pressure multi-point detection method according to claim 6, characterized in that: When the pressing head moves to the lowest position, the deflection force of the pressing head in the horizontal direction due to the reaction force of the human body is obtained based on the multiple detection pressures obtained, including: According to the two detection pressures corresponding to each group of measurement points, the measurement force exerted by the force sensor on the measurement points of the pressing component is obtained; Based on the measurement force applied to the pressing assembly at each set of measurement points, the first distance between the measurement point and the axis of the pressing head, and the second distance between the bottom surface of the pressing head and the measurement point, the horizontal deflection force of the pressing head corresponding to each set of measurement points due to the reaction force of the human body is obtained.

8. The cardiopulmonary resuscitation pressure multi-point detection method according to claim 6, characterized in that: According to the effective pressing force applied by the pressing assembly to the human body and the deflection force in the horizontal direction of the pressing head due to the reaction force of the human body, a vector graph of the human chest rebound force is obtained, including: Taking the center of the bottom surface of the pressing head as the force origin, according to the effective pressing force applied by the pressing component to the human body, the vertical rebound force vector formed by the human chest cavity on the force origin is obtained; According to the deflection force in the horizontal direction of the pressing head corresponding to each group of measurement points subjected to the reaction force of the human body, a plurality of horizontal rebound force vectors formed by the human chest cavity on the force origin are obtained; According to the rebound force vector of the force origin in the vertical direction and multiple rebound force vectors in the horizontal direction, a human chest rebound force vector graph is obtained.

9. The cardiopulmonary resuscitation pressure multi-point detection method according to claim 5, characterized in that: Also includes: When the pressing position deviates, an alarm will be issued; According to the human chest rebound force vector graph, the position of the pressing head is adjusted so that the detection pressure at each measuring point meets its corresponding standard pressure.

10. The cardiopulmonary resuscitation pressure multi-point detection method according to claim 4, characterized in that: According to the standard pressure corresponding to each measuring point, the detection pressure of each measuring point is judged to obtain the judgment result of whether the pressing position is offset, including: Obtain the deviation value between the detection pressure of each measuring point and the corresponding standard pressure; If the deviation values ​​of at least two measuring points do not meet the deviation setting threshold, the judgment result is that the pressed position has shifted; if the deviation value of each measuring point meets the deviation setting threshold, the judgment result is that the pressed position has not shifted.

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