Systems and methods for controlling units for a scale

1. A system for controlling measurement units for a medical scale, the system comprising:

a removable head unit configured to couple to a medical scale platform, the removable head unit including a human machine interface; and

an electronic processor coupled to the human machine interface and configured to

receive, via the human machine interface, a first user input selecting a permanent lock mode;

in response to receiving the first user input selecting the permanent lock mode, present, via the human machine interface, a first authentication request;

in response to presenting the first authentication request, receive, via the human machine interface, a second user input including a first authentication token; and

in response to receiving the first authentication token and when the first authentication token is valid,

present, via the human machine interface, a measurement unit selection prompt,

in response to presenting the measurement unit selection prompt, receive, via the human machine interface, a third user input selecting a measurement unit, and

in response to receiving the third user input selecting the measurement unit, activate the permanent lock mode based on the selected measurement unit.

2. The system of claim 1 , wherein the electronic processor is further configured to:

in response to receiving the third user input, present, via the human machine interface, a confirmation prompt;

receive, via the human machine interface, a fourth user input; and

when the fourth user input confirms the selection of the permanent lock mode, activate the permanent lock mode based on the selected measurement unit.

3. The system of claim 2 , wherein

the confirmation prompt includes a second authentication prompt,

the fourth user input includes a second authentication token; and

the electronic processor is further configured to activate the permanent lock mode based on the selected measurement unit only when the first authentication token and the second authentication token are valid.

4. The system of claim 1 , wherein receiving the first authentication token includes receiving a first authentication token selected from a group consisting of an alphanumeric password, a personal identification number, a biometric authentication, an RFID authentication, an NFC authentication, and a security key insertion.

5. The system of claim 3 , wherein the second authentication token is different than the first authentication token.

6. The system of claim 1 , wherein the electronic processor is further configured to

in response to activating the permanent lock mode, disable at least one function selected from a group consisting of a unit toggle function, a unit lock function, and a unit view function.

7. The system of claim 1 , wherein the electronic processor is further configured to:

generate, on the human machine interface, a graphical user interface including a menu system; and

receive the first user input by receiving the user input via the menu system.

8. The system of claim 7 , wherein the electronic processor is further configured to

in response to activating the permanent lock mode, display, in the menu system, a locked indication for menu items corresponding to at least one function selected from a group consisting of a unit toggle function, a unit lock function, and a unit view function.

9. The system of claim 1 , wherein activating the permanent lock mode includes setting a value in a non-volatile random access memory of the memory of the scale.

10. The system of claim 1 , wherein the head unit further comprises:

an input/output interface,

wherein electronic processor is further configured to

detect a reset dongle attached to the input/output interface; and

in response to detecting the reset dongle, deactivate the permanent lock mode.

11. A method for controlling measurement units for a medical scale, the method comprising:

receiving, via a human machine interface, a first user input selecting a permanent lock mode;

in response to receiving the first user input, presenting a first authentication request;

receiving a second user input including a first authentication token; and

when the first authentication token is valid,

presenting a measurement unit selection prompt,

receiving a third user input selecting a measurement unit, and

in response to receiving the third user input, activating, with an electronic processor, the permanent lock mode based on the selected measurement unit.

12. The method of claim 11 , further comprising:

in response to receiving the third user input, presenting, a confirmation prompt;

receiving, via the human machine interface, a fourth user input; and

when the fourth user input confirms the selection of the permanent lock mode, activating the permanent lock mode based on the selected measurement unit.

13. The method of claim 12 , wherein

presenting the confirmation prompt includes presenting a second authentication prompt,

receiving the third user input includes receiving a second authentication token; and

activating the permanent lock mode based on the selected measurement unit includes activating the permanent lock mode only when the first and second authentication tokens are valid.

14. The method of claim 11 , wherein receiving the first authentication token includes receiving a first authentication token selected from a group consisting of an alphanumeric password, a personal identification number, a biometric authentication, an RFID authentication, an NFC authentication, and a security key insertion.

15. The method of claim 13 , wherein the second authentication token is different than the first authentication token.

16. The method of claim 11 , further comprising:

in response to activating the permanent lock mode, disabling at least one function selected from a group consisting of a unit toggle function, a unit lock function, and a unit view function.

17. The method of claim 11 , further comprising:

generating, on the human machine interface, a graphical user interface including a menu system; and

receiving the first user input by receiving the user input via the menu system.

18. The method of claim 17 , further comprising:

in response to activating the permanent lock mode, displaying, in the menu system, a locked indication for menu items corresponding to at least one function selected from a group consisting of a unit toggle function, a unit lock function, and a unit view function.

19. The method of claim 11 , wherein activating the permanent lock mode includes setting a value in a non-volatile random access memory of the memory of the scale.

20. The method of claim 11 , further comprising:

detecting a reset dongle attached to an input/output interface; and

in response to detecting the reset dongle, deactivating the permanent lock mode.