CN205983474U - Intelligent nursing manages appearance - Google Patents

Abstract

This application embodiment provides an intelligent nursing manages appearance, includes: identity data receiving unit for read user's identity data, nursing data receiving unit for receive the nursing data of user's input, ultrasonic wave monitoring probe for the transmission ultrasonic wave is to being received the ultrasonic wave that returns by the nursing staff, information transmitting section for with relevant data transmission to the backend server of identity data, nursing data and ultrasonic wave. The utility model discloses an automatic identity data that obtain the nursing staff of intelligent nursing manages appearance ability erupt simultaneously with the nursing data and send the backstage to for backend server judges according to the nursing plan that prestores whether the nursing staff has accomplished the nursing project that corresponds according to schedule, realizes automatic, the high -efficient management to the nursing flow. It is further, can judge whether to be had by the nursing staff through the ultrasonic wave monitoring and fall bed danger for the nursing staff can reduce dangerous emergence, in time being handled when dangerous by the nursing staff.

Description

A kind of intelligent nursing manages instrument

Technical field

The utility model belongs to nursing field, and more particularly, to a kind of intelligent nursing manages instrument.

Background technology

The nursery work species of hospital or nursing home is various, common such as transfusion, oxygen uptake, stand up, be atomized, urethral catheterization etc., The different nursing grades being needed by nursing staff are also different, and therefore its nursing items is different, and during the nursing of disparity items Between also not necessarily, nursing staff often can because forget or the reason such as lazy and miss some nursing items, need for this to nursing work It is monitored managing.Existing method is all to be carried out by way of manual record, artificial selective examination, but such mode cost Greatly, and accuracy rate is low.And with increasing by the increase of nursing staff and nursing items, artificial mode is more next Needs more can not be met.

Utility model content

The purpose of this utility model is to provide a kind of intelligent nursing management instrument, by by way of automation to nursing work It is monitored, reduce the cost of nursing supervision and improve accuracy rate.

The utility model discloses a kind of intelligent nursing manages instrument, including：

Identity data receiving unit, for the identity data of receiving user's input；

Nursing data receiving unit, for the nursing data of receiving user's input；

Monitoring ultrasonic is popped one's head in, for launching ultrasonic wave to by nursing staff and receive the ultrasonic wave of return；

Information transmitting unit, for sending described identity data, nursing data and ultrasonic wave related data to backstage Server.

Preferably, described identity data receiving unit is smart card inductor, for reading the identity information in smart card；

And/or；

Described nursing data receiving unit is digital keys or figure button, and each described button corresponds to nursing items.

Preferably, described monitoring ultrasonic probe is arranged on the equipment belt above the described care bed being located by nursing staff On.

Preferably, the angle in the direction of described monitoring ultrasonic probe transmitting ultrasonic wave and the described direction perpendicular to ground For 35-105 °

Preferably, described monitoring ultrasonic probe is arranged on above care bed and the ultrasonic wave direction of the launch is parallel to care bed Bed surface, described monitoring ultrasonic probe is more than the described shoulder breadth by nursing staff and is not more than with the difference in height of care bedWherein said X is the described distance by the nursing staff crown to buttocks, and described ultrasonic probe is nursed with described Perpendicular to described bed surface, described be in 45° angle by nursing staff and described bed surface to the line on the personnel crown.

Preferably, described intelligent management manages the gravity sensor that instrument also includes being arranged on care bed, for monitoring State the gravimetric data on care bed；

Described information transmitting element, is additionally operable to send the gravimetric data of described monitoring to described background server.

Preferably, described intelligent management management instrument also includes information receiving unit and alarm lamp；

Described information receiving unit is used for receiving the information that described background server returns；

Described alarm lamp, for platform server in the rear return information for alarm signal when reported to the police.

Preferably, described alarm signal is determining described identity data, nursing data, correspondence for described background server The nursing time, generate when not being inconsistent with the nursing care plan prestoring by least one in nursing staff；Wrap in described nursing care plan Containing by the corresponding relation of nursing staff, nursing staff, nursing time and nursing items.

Preferably, to be described background server return determining described monitoring ultrasonic probe and receive described alarm signal Generate during the ultrasonic wave returning and determine described had by nursing staff fall bed dangerous when generate.

Preferably, described alarm signal is that described background server is determining generation when described gravity is less than preset value.

According to the utility model embodiment, intelligent nursing manages identity data and the nursing that instrument can automatically obtain nursing staff Data Concurrent delivers to backstage so that according to the nursing care plan prestoring, background server can judge whether nursing staff is complete according to schedule Corresponding nursing items are become, to realize automatic, the efficient management to nursing flow process.

Further, can be detected by the condition of nursing staff by monitoring ultrasonic, judge by nursing staff Whether have that to fall bed dangerous so that nursing staff can by nursing staff dangerous when, process in time.The program can be without Nursing staff constantly keeps by nursing staff at one's side, decreases cost and dangerous generation.

Brief description

In order to be illustrated more clearly that the embodiment of the present application or technical scheme of the prior art, below will be to embodiment or existing Have technology description in required use accompanying drawing be briefly described it should be apparent that, drawings in the following description be only this Some embodiments described in application, for those of ordinary skill in the art, in the premise not paying creative labor Under, other accompanying drawings can also be obtained according to these accompanying drawings.

Fig. 1 is the utility model management instrument construction module figure；

Fig. 2 is the utility model intelligent nursing management instrument product schematic diagram；

Fig. 3 is the schematic diagram that the utility model monitoring ultrasonic probe is arranged on equipment belt.

Specific embodiment

In order that those skilled in the art more fully understand the technical scheme in the application, real below in conjunction with the application Apply the accompanying drawing in example, the enforcement it is clear that described is clearly and completely described to the technical scheme in the embodiment of the present application Example is only some embodiments of the present application, rather than whole embodiments.Based on the embodiment in the application, this area is common The every other embodiment that technical staff is obtained under the premise of not making creative work, all should belong to the application protection Scope.

The utility model following examples taking the nursing to the elderly as a example illustrate.Certainly the utility model is applied to Other similar all situations needing nursing as infant and patient etc..

As stated in the Background Art, with by nursing staff, the increasing of nursing items, by nursing staff's different nursing care grade etc. Division, nursery work is more and more detailed and professional.Different nursing stafves be responsible for different by nursing staff, same protected Reason personnel have different nursing items in different time, and same nursing staff may be responsible for multiple different nursing items. Based on this, nursing staff may omit some nursing items, or lazy and omit some nursing items.Need to it for this Be managed, the manager simultaneously as nursing home or by the guardian of nursing staff such as father and mother or children it is also desirable to can and When understand by the nursing state of nursing staff.For this reason, being also required to nursery work, nursing flow process are managed.

The utility model embodiment provides a kind of intelligent nursing management instrument, and this management instrument includes following knot as shown in Figure 1 Structure：

Identity data receiving unit 11, for reading the identity data of user.

Nursing data receiving unit 12, for the nursing data of receiving user's input..

Monitoring ultrasonic probe 13, for launching ultrasonic wave to by nursing staff and receive the ultrasonic wave of return.

Information transmitting unit 14, for sending described identity data, nursing data and ultrasonic wave related data to rear Platform server.

Specifically, as shown in Fig. 2 above-mentioned identity data receiving unit 11 can be typically a smart card inductor 21, For reading the identity information of storage in smart card.Nursing staff only needs to the smart card of oneself such as work card near this smart card sense Answer the induction zone of device 21, the wherein identity information of storage such as name, job number etc. is read atomically.Certainly it is further reinforcement Management, it is to avoid the appearance of behavior of checking card etc. for people, this identity data receiving unit 11 can also be set to based on finger print identifying Identity reading unit, so only my input fingerprint when, just have corresponding identity information.

Further, as shown in Fig. 2 nursing data receiving unit 12 specifically can be in the way of using key-press input, such as The digital keys 1-9 of Fig. 2 right-hand component, is to meet the different educational level of nursing staff certainly, can also adopt or adopt simultaneously Use figure button, figure button intuitively shows corresponding nursing items, be easy to nursing staff's key-press input.Need clearly It is that be stored with background server the corresponding nursing items of remaining button, so after the key information of nursing staff's input is sent to After platform server, background server can determine the nursing items of nursing staff's input according to the corresponding relation of oneself storage.

Above-mentioned identity data receiving unit 11 and nursing data receiving unit 12 make background server obtain nursing staff Identity and the nursing items that complete, according to as described before, a nursing generally has nursing staff, by nursing staff, nursing item Mesh and nursing time.For intelligent nursing management instrument by nursing staff, can be arranged with by the corresponding relation of nursing staff, such as give , so that a numbering corresponds to one by nursing staff, such background server can be according to the pipe sending data for management instrument numbering The numbering of reason instrument determines by nursing staff.For the nursing time it is contemplated that intelligent management manages net between instrument and background server The delay of network, can arrange timer in management instrument, to record the time and to send to background server.Or, for reality The now unifications between many management instrument, can by background server according to receive identity data and nursing data time synthesis its He is determined factor.The management of nursery work first has to ensure the time in regulation for the corresponding nursing staff to being nursed accordingly The nursing items that personnel are specified, therefore, store one and show nursing staff, by nursing staff, shield in background server Reason project, the nursing care plan of nursing corresponding time relationship, when background server by by nursing staff, nursing time, receive Identity data, nursing data and nursing care plan are contrasted, and when having determined at least one and not being inconsistent, assert that nursery work is not pressed Complete according to plan, thus generating alarm signal.As：In the stipulated time, (in advance, delayed, omission) does not complete to nurse nursing staff Project.

Above-mentioned alarm signal can be sent by background server and nursing staff be reminded it is also possible to be taken by backstage to nursing end Business device sends to be reminded to monitoring end to guardian.More direct, in the utility model, can be on intelligent nursing management instrument Configuration information receiving unit 15 and alarm lamp 16 (being numbered 22 in fig. 2).Wherein, information receiving unit 15 is used for receiving backstage The information that server sends.Alarm lamp 16 is used for being reported to the police by flicker or bright light when this information is for alarm signal, thus Related personnel is reminded to be processed.

Certainly, information receiving unit 15 can also receive other information, the letter such as cancellation warning that such as background server sends Breath.

To sum up, identity and the nursing letter that instrument can pass through smart machine automatic data collection nursing staff is managed based on intelligent nursing Breath, carries out concentrating, efficiently manages to nursing flow process, and when going wrong, can be found in time by background server and report to the police into Row is reminded, and strengthens the management to nursery work.Provide for the administrative staff of nursing home, guardian and nursing staff and be available for looking into The record seen.

As shown in Fig. 2 power lights 23 can be arranged on intelligent nursing management instrument.Simultaneously take account of management instrument and background service Pass through network connection between device, for knowing network state in real time, wifi indicator lamp 24 can also be set and indicated.

Further, in order that nursing staff is directly perceived understands current situation about inputting, intelligent nursing management instrument also includes showing Unit 17 (being numbered 25 in Fig. 2), for showing the identity data of user input, nursing data or receiving from background server Information.

Furthermore it is also possible to intelligent nursing management instrument on setting camera (in Fig. 2 27), for according to instruction or according to Preset mode obtains by the photo of nursing staff or obtains the photo in nursing process and be sent to background server, after being used for Continuous inquiry.

As described above, in view of the reason such as the reason such as cost or night care is it is impossible to ensure that nursing staff keeps constantly Before care bed, the every act and every move of old man is guarded.And old man is based on the reason physiology, major part all cannot have been taken care of oneself, such as Cannot oneself leave the bed.When in need or in the case of unconscious, the extremely easy situation falling bed.If nursing staff can not Guard the generation that old man falls bed in time, delay the emergency time, the loss that cannot retrieve can be caused.

Based on this, intelligent nursing management instrument is additionally provided with monitoring ultrasonic probe 13 (in Fig. 2 26), using ultrasonic wave It is monitored to by nursing staff such as old man, to detect its condition, fall bed danger and judge to whether having, to nurse Personnel are processed in time, it is to avoid dangerous generation.

The monitoring method of this monitoring ultrasonic probe 13 comprises the steps：

First, monitoring ultrasonic probe sends ultrasonic wave to by nursing staff.

In the utility model, the transmitting for ultrasonic wave can be real-time or periodic, periodically in the case of, surpass The each transmitting of sound wave can continue the regular hour

Certainly in preferred embodiment, the radiation pattern to ultrasonic wave can be set, such as nighttime conditions select real-time mode, in vain It selects periodicity pattern.

Secondly, when the ultrasonic wave being reflected back is detected, sent to background server by information transmitting unit 14.

Herein it should be clear that, in the utility model monitoring ultrasonic probe installation site make to be existed by nursing staff Do not have ultrasonic wave under the normal condition such as lie low to return.And such as sat up etc. it may happen that returning in the case of falling bed by nursing staff Return ultrasonic wave.I.e. in the utility model, whether background server in conjunction with the installation site of monitoring ultrasonic probe and can have ultrasonic Wave reflection returns to judge to be fallen a risk by whether nursing staff has.

Rule of thumb, before falling bed, following action would generally be had by nursing staff：

Stand up, stood up to settle down from lying low to by nursing staff.

Side is sat, and is stood up from lying low to by nursing staff, leans to one side for both legs to hang under bed recoil in edge of bed.

In above-mentioned action, a body part all can be had to occur higher than the situation of lying status by nursing staff, As long as can tentatively determine whether to fall dangerous the sending out of bed higher than the situation of lying status by whether monitoring ultrasonic has for this Raw.

But the aspect that another should be noted is to be stood up action by nursing staff.The meeting during standing up by nursing staff From lying status, lean to one side 90 ° using ancon and buttocks strength, be now shoulder breadth by nursing staff apart from the height of bed plane.But In this case, action is simply simply stood up by nursing staff, the danger of bed can't be fallen, but because shoulder is higher than flat Lie state, thus ultrasonic wave can be hindered to return it to thus causing error detection.For this reason, it may be necessary to by the exclusion of this situation to reduce by mistake Survey.

The utility model provides two kinds of specific detection modes：

A kind of setting height(from bottom) being monitoring ultrasonic probe necessarily, adjusts ultrasonic wave according to by the individual difference of nursing staff The ultrasonic wave launch angle of monitoring probe.

In such cases, monitoring ultrasonic probe is typically mounted at the top of care bed it is preferred that may be mounted at nursing On the equipment belt of bed top.At A as shown in Figure 3.It is usually fixed apart from the height of care bed in nursing home equipment belt, by In its setting position more higher than care bed, therefore, such as ultrasonic wave to be launched to by nursing staff, its direction of the launch generally needs Downward-sloping.Certainly, if higher by nursing staff, when especially it sits up, the position on the crown is higher than that monitoring ultrasonic is popped one's head in Position, then the direction of the launch of ultrasonic wave is accomplished by being inclined upwardly.For different heights by nursing staff, it is right to need to adjust The direction of the launch of the ultrasonic wave answered.It is to avoid causing error detection to situation about standing up in addition it is also necessary to arrange sending out of ultrasonic wave simultaneously Penetrate direction so that in the height standing up, ultrasonic wave will not be blocked by nursing staff.According to difference by nursing staff's Experiment, in the utility model, the ultrasonic wave direction of the launch of monitoring ultrasonic probe is preferably with the angle perpendicular to ground direction 35°-135°.It should be noted that the so-called direction perpendicular to ground is exactly substantially the bed surface direction of care bed.This practicality is new In type, the bed surface of care bed is the direction perpendicular to ground.

When monitoring that old man sits up with the angle of bed surface more than 45 °, then judge to have that to fall bed dangerous, further can carry out Report to the police.

In the set-up mode of above-mentioned ultrasonic probe, the focus point of 45 ° of rays is at upper part of the body shoulder breadth.

Another kind is the transmitting ultrasonic wave in bed surface direction parallel to care bed for the monitoring ultrasonic probe, and according to by caregiver The member crown is to the height of buttocks, the setting height(from bottom) of adjustment monitoring ultrasonic probe.Due to monitoring ultrasonic probe transmitting ultrasonic Wave beam is tapered, so the ultrasonic wave direction of the launch and care bed plane actually can have certain angle, typically in 5 ° of scopes Interior.

In the utility model preferably, the setting height(from bottom) of monitoring ultrasonic probe is that it is not less than with the difference in height of care bed By the shoulder breadth of nursing staff and no more thanWherein X is by the distance on the nursing staff crown to buttocks and described ultrasonic wave is visited , perpendicular to described bed surface, described is in 45° angle by nursing staff and described bed surface for head and the described line by the nursing staff crown.This Shi Yunyong Pythagorean theorem can get the setting height(from bottom) of monitoring ultrasonic probe.The setting of this height can avoid to standing up Situation causes error detection, in turn ensure that to standing up, the correct detection of situation is sat in side simultaneously.

In the second way, monitoring ultrasonic probe preferably may be mounted on the metope above care bed.

Above two mode is that provide two kinds of the utility model are concrete to be arranged, and certainly, any can be based on ultrasonic wave pair Can be included in the utility model by the monitoring of nursing staff's body posture.

Sometimes, may be temporary transient by some body postures of nursing staff, arm etc. of as above waving one's hand, the arm resistance raising up Hinder and during ultrasonic wave, also can return ultrasonic wave, but this situation may be by the temporary transient action of nursing staff, has no with falling bed Relation, for reducing the generation of such error detection, in preferred embodiment, needs to detect, in continuous certain time, be reflected back ultrasonic During ripple, determine to be had by nursing staff and fall a risk.When the ultrasonic wave being reflected back is detected within such as continuous 3 seconds, determine by Nursing staff has and falls a risk.

Preferably determine when monitoring the ultrasonic wave being reflected back within continuous 3 seconds in the utility model that to fall a risk be to be based on Experimental data obtains, according to experimental data, even if comparing sensitive old man from starting to sitting up to 45 ° and plus the time turned round It is also required to 3 seconds about.

If in addition, effective monitoring distance of ultrasonic wave is unrestricted, rate of false alarm can be increased, such as exceeded effectively by nursing staff Monitoring distance, then cannot monitor its state.The utility model arranges effective monitoring distance and is more than X/2+Y, insures system less than X+ Number (this safety factor allows for old man and can move to tailstock) above the waist height+safety factor=bed long-lower part of the body highly.Cause This safety factor=bed long Z- height Q.The experimental data of test that applicant carried out has been provided below, so that the utility model Principle is clearer.

Test 1 upper (test is carried out in the condition of no guardrail)

Testing time：August in 2015 morning on the 6th

Testing location：Suzhou Kang Fu nursing home

Test object：The equal behavior of No. 307 bed test objects A, B is normal

Test one：Stand up

Test specification：Test request test object is stood up the spent time of settling down from lying low to.

Test result：6 seconds 5 points of A used times；1 second 1 point of B used time

Test two：Side is sat

Test specification：Test request test object is stood up from lying low to, leans to one side to hang on both legs under bed, and settles down in bed Along the time being spent.

Test result：7 seconds 9 points of A used times；1 second 2 points of B used time

Test three：90 ° are stood up

Test specification：Test request test object from the initial state lying low, is leaned to one side 90 ° of institutes using ancon and buttocks strength The time spending.Record shoulder when leaning to one side and be lifted off bed surface height 32cm.

Test result：7 seconds 5 points of A used times；7 seconds 1 point of B used times

Test four：Critical fall bed

Test specification：Test request test object, from the initial state lying low, is rolled to edge of bed using whole body power clean critical The time being spent during pendant bed state.

Test result：2 seconds 9 points of A used times；13 seconds 4 points of B used times

Test 2 (test on bed and carry out under the conditions of having guardrail)

Testing time：August in 2015 morning on the 7th

Testing location：Suzhou Kang Fu nursing home

Test object：No. 307 bed A behaviors are normal

Test five：Critical fall bed

Test specification：Test request test object, from the initial state lying low, utilizes upper part of the body strength to fence after sitting up Turn up and climb the time that critical pendant bed point is spent.

Test result：For the first time 07 second 17 points of test used time, 26 seconds 19 points of second test used times；The average used time：18 points 17 seconds

Test six：Drilling machine

Test specification：Test request test object from the initial state lying low, is moved at one jiao of the head of a bed using whole body strength Dynamic, measurement under conditions of not considering bedside cupboard impact gets out vacancy, falls, until critical, the time that bed is spent.

Test result：For the first time 83 seconds 9 points of test used times, 46 seconds 10 points of second test used times, second test used time 9 Divide 61 seconds；The average used time：9 points 97 seconds

Measurement one：Guardrail height

Test specification：Measurement edge of bed guardrail top is to bed surface (coverlet) highly.

Test result：17-23cm (the bed specification that nursing home uses is different)

Measurement two：Shoulder breadth

Test object：No. 307 bed A

Test specification：When test object is leaned to one side, measurement shoulder is lifted off the height (shoulder breadth) of bed surface

Test result：32cm

Measurement three：Height when sitting up

Test object：No. 307 bed A

Test result：Neck-buttocks 60cm

The crown-buttocks 75cm

Measurement four：Distance from the wall when sitting up

Test object：No. 307 bed A

Test result：Metope and human body vertical range 86cm

Metope and human body obliquely 15 ° apart from 90cm

Need it is further noted that being also had another kind of state to fall bed for rolling by nursing staff, that is, by nursing staff from Lying status is rolled and is fallen bed to edge of bed.Under this state, stood up one by nursing staff together apart from the height of care bed plane Sample, is also its shoulder breadth.But probability very little of this occurrence of, and limited by Cribguard and bedside cupboard etc., quilt Nursing staff seldom can occur rolling to fall bed.But for improving the accuracy of detection further, in the utility model, as shown in figure 1, Intelligent nursing manages the gravity sensor 18 that instrument also includes being arranged on care bed, for detecting the gravity value on care bed, and Sent to background server by information transmitting unit 14.

When background server determines current gravity and is less than certain value, especially continuous certain time is less than certain value When, even without the ultrasonic wave returning, also can determine and fall the dangerous generation of bed.Now background server can send warning message Reported to the police to care station.

The monitoring ultrasonic probe of above-described embodiment and gravity sensor may each be multiple.

Understand can automatically detect by the condition of nursing staff by ultrasonic wave by above-described embodiment, judge quilt Whether nursing staff has that to fall bed dangerous so that nursing staff can by nursing staff dangerous when, process in time.The method Constantly can keep by nursing staff at one's side without nursing staff, especially under night-environment, decrease cost and dangerous sending out Raw.

Each embodiment in this specification is all described by the way of going forward one by one, identical similar portion between each embodiment Divide mutually referring to what each embodiment stressed is the difference with other embodiment.Real especially for system For applying example, because it is substantially similar to embodiment of the method, so the comparison of description is simple.

Although the application is depicted by embodiment, it will be appreciated by the skilled addressee that the application have many deformation and Change is without deviating from spirit herein it is desirable to appended claim includes these deformation and change without deviating from the application's Spirit.

Claims (7)

1. a kind of intelligent nursing management instrument is it is characterised in that described intelligent nursing management instrument includes：

Identity data receiving unit, for reading the identity data of user；

Nursing data receiving unit, for the nursing data of receiving user's input；

Monitoring ultrasonic is popped one's head in, for launching ultrasonic wave to by nursing staff and receive the ultrasonic wave of return；

Information transmitting unit, for sending described identity data, nursing data and ultrasonic wave related data to background service Device.

2. intelligent nursing management instrument as claimed in claim 1 is it is characterised in that described identity data receiving unit is smart card Inductor, for reading the identity information in smart card；

And/or；

Described nursing data receiving unit is digital keys or figure button, and each described button corresponds to nursing items.

3. intelligent nursing as claimed in claim 1 management instrument it is characterised in that described monitoring ultrasonic probe be arranged on described On the equipment belt above care bed being located by nursing staff.

4. intelligent nursing management instrument as claimed in claim 1 is it is characterised in that described monitoring ultrasonic probe launches ultrasonic wave The angle in direction and the described direction perpendicular to ground be 35-105 °.

5. intelligent nursing management instrument as claimed in claim 1 is it is characterised in that described monitoring ultrasonic probe is arranged on nursing , parallel to the bed surface of care bed, described monitoring ultrasonic probe is big with the difference in height of care bed for bed top and the ultrasonic wave direction of the launch In the described shoulder breadth by nursing staff and no more thanWherein said X be described by the nursing staff crown to buttocks away from From, and described ultrasonic probe and the described line by the nursing staff crown be perpendicular to described bed surface, described by nursing staff with Described bed surface is in 45° angle.

6. intelligent nursing management instrument as claimed in claim 1 is it is characterised in that described intelligent management management instrument also includes arranging Gravity sensor on care bed, for monitoring the gravimetric data on described care bed；

Described information transmitting element, is additionally operable to send the gravimetric data of described monitoring to described background server.

7. the intelligent nursing management instrument as described in any one of claim 1-6 is it is characterised in that described intelligent management manages Instrument also includes information receiving unit and alarm lamp；

Described information receiving unit is used for receiving the information that described background server returns；

Described alarm lamp, for platform server in the rear return information for alarm signal when reported to the police.